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prof. Ing. Pavel Slavík, CSc.

Všechny publikace

PTRM: Perceived Terrain Realism Metric

  • Autoři: Rajasekaran, S.D., Kang, H., Čadík, M., Galin, E., Guerin, E., Peytavie, A., prof. Ing. Pavel Slavík, CSc., Beneš, B.
  • Publikace: ACM Transactions on Applied Perception (TAP). 2022, 19(2), ISSN 1544-3558.
  • Rok: 2022
  • DOI: 10.1145/3514244
  • Odkaz: https://doi.org/10.1145/3514244
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    Terrains are visually prominent and commonly needed objects in many computer graphics applications. While there are many algorithms for synthetic terrain generation, it is rather difficult to assess the realism of a generated output. This article presents a first step toward the direction of perceptual evaluation for terrain models. We gathered and categorized several classes of real terrains, and we generated synthetic terrain models using computer graphics methods. The terrain geometries were rendered by using the same texturing, lighting, and camera position. Two studies on these image sets were conducted, ranking the terrains perceptually, and showing that the synthetic terrains are perceived as lacking realism compared to the real ones. We provide insight into the features that affect the perceived realism by a quantitative evaluation based on localized geomorphology-based landform features (geomorphons) that categorize terrain structures such as valleys, ridges, hollows, and so forth. We show that the presence or absence of certain features has a significant perceptual effect. The importance and presence of the terrain features were confirmed by using a generative deep neural network that transferred the features between the geometric models of the real terrains and the synthetic ones. The feature transfer was followed by another perceptual experiment that further showed their importance and effect on perceived realism. We then introduce Perceived Terrain Realism Metrics (PTRM), which estimates human-perceived realism of a terrain represented as a digital elevation map by relating the distribution of terrain features with their perceived realism. This metric can be used on a synthetic terrain, and it will output an estimated level of perceived realism. We validated the proposed metrics on real and synthetic data and compared them to the perceptual studies.

Testing the Usability and Accessibility of Smart TV Applications Using an Automated Model-Based Approach

  • DOI: 10.1109/TCE.2020.2986049
  • Odkaz: https://doi.org/10.1109/TCE.2020.2986049
  • Pracoviště: Katedra počítačové grafiky a interakce, Laboratoř inteligentního testování systémů
  • Anotace:
    As the popularity of Smart Televisions (TVs) and interactive Smart TV applications (apps) has recently grown, the usability of these apps has become an important quality characteristic. Previous studies examined Smart TV apps from a usability perspective. However, these methods are mainly manual, and the potential of automated model-based testing methods for usability testing purposes has not yet been fully explored. In this article, we propose an approach to test the usability of Smart TV apps based on the automated generation of a Smart TV user interaction model from an existing app by a specialized automated crawler. By means of this model, defined user tasks in the Smart TV app can be evaluated automatically in terms of their feasibility and estimated user effort, which reflects the usability of the analyzed app. This analysis can be applied in the context of regular users and users with various specific needs. The findings from this model-based automated analysis approach can be used to optimize the user interface of a Smart TV app to increase its usability, accessibility, and quality.

Conversational Agents for Physical World Navigation

  • DOI: 10.1007/978-3-319-95579-7_4
  • Odkaz: https://doi.org/10.1007/978-3-319-95579-7_4
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    This chapter presents a design process for developing a conversational navigation agent for visually impaired pedestrians where communication runs in natural language. This approach brings a lot of new problems with opportunity to solve them in nontraditional ways. The conversation with the agent is an example of a problem-solving process with several complex parts of the solution needed to be executed by the user. The user can ask additional questions about each part of the solution, thus adaptively changing the level of detail of information acquired, or to alternate the whole process to fit user preferences. In this way, the agent can replace a human navigator. Using this design process exemplar, we provide guidance on creating similar conversational agents, which utilize a natural language user interface. The guidance is supported by the results of several experiments conducted with participants with visual impairments.

Distinctive Approaches to Computer Graphics Education

  • DOI: 10.1111/cgf.13305
  • Odkaz: https://doi.org/10.1111/cgf.13305
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    This paper presents the latest advances and research in Computer Graphics education in a nutshell. It is concerned with topics that were presented at the Education Track of the Eurographics Conference held in Lisbon in 2016. We describe works corresponding to approaches to Computer Graphics education that are unconventional in some way and attempt to tackle unsolved problems and challenges regarding the role of arts in computer graphics education, the role of research-oriented activities in undergraduate education and the interaction among different areas of Computer Graphics, as well as their application to courses or extra-curricular activities. We present related works addressing these topics and report experiences, successes and issues in implementing the approaches.

Landmark-enhanced route itineraries for navigation of blind pedestrians in urban environment

  • DOI: 10.1007/s12193-018-0263-5
  • Odkaz: https://doi.org/10.1007/s12193-018-0263-5
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    Visual impairment limits a person mainly in the ability to move freely and independently. Even with many navigation aids and tools currently on the market, almost one-third of the visually impaired do not travel alone without a guide. One of the most useful aids are the landmark-enhanced itineraries of the route created by orientation and mobility specialists. We describe the design of a system, which is based on a specific, efficiently collected geographical data, and which automatically generates human-like landmark-enhanced itineraries for navigation of visually impaired users. The studies we conducted (quantitative n = 16, qualitative n = 6) showed usability and efficiency of the system. We also provide a set of design recommendations to increase the usability of the system along with specific examples of usage of particular landmarks. Moreover, we report on 14-day long diary study (n = 3) where visually impaired participants used the system freely throughout the city center with a success rate of 84% without using GPS. Finally, based on an over-the-phone survey (n = 18), we provide a methodology to identify the essential area, where geographical data needs to be collected to enable visually impaired pedestrians to travel around the city center efficiently.

VIRTUAL REALITY IN CARE FOR OLDER ADULTS

  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    Older adults gradually lose their physical and psychical abilities, and they have to get accustomed to this fact. This situation causes certain discomfort for these people and question arises how to make their life easier to minimize the discomfort. One of the possible solutions is to provide them with training by means of which they can acquire new skills that may ideally compensate their inabilities to a satisfactory extent. In this paper, we will discuss possibilities how to employ new information technologies allowing to simulate the virtual interaction of the person in various environments. The use of these technologies also allows personalization, i.e., taking into account the abilities of individual users that suffer from a particular handicap. Moreover, these technologies make possible to train people for new situations in new environments in advance, before they occur there physically, for instance, to train them for operating new devices in the household, etc. The goal of this paper is to attract the attention of people who work in institutions where care for older adults is provided to new methods that in principle can increase the comfort of older adults together with allowing caregivers to increase quality and efficiency of their work. The technology cannot replace human caregivers, but it should provide them with new possibilities in the process when older adults are treated.

Text input for motor-impaired people

  • Autoři: Poláček, O., Sporka, A., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Universal Access in the Information Society. 2017, 2017(1), 51-72. ISSN 1615-5289.
  • Rok: 2017
  • DOI: 10.1007/s10209-015-0433-0
  • Odkaz: https://doi.org/10.1007/s10209-015-0433-0
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    This paper provides an overview of 150 publications regarding text input for motor-impaired people and describes current state of the art. It focuses on common techniques of text entry including selection of keys, approaches to character layouts, use of language models, and interaction modalities. These aspects of text entry methods are further analyzed, and examples are given. The paper also focuses on an overview of reported evaluations by describing experiments, which can be conducted, to assess the performance of a text entry method. Following this overview, a summary of 61 text entry methods for motor-impaired people found in the related literature is presented, classifying those methods according to the aforementioned aspects and reported evaluation. This overview was assembled with the aim to provide a starting point to the new researchers in the field of accessible text entry. The text entry methods are also categorized according to the suitability for various conditions of the users.

A Trip to Arts for Computer Graphics Students

  • DOI: 10.2312/eged.20161019
  • Odkaz: https://doi.org/10.2312/eged.20161019
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    Complex and sophisticated projects, on which information technologists and artists meet and cooperate, often require an understanding of possible problems and solutions seen from both sides. While artists (creators) are usually somewhat familiar with current technologies, e.g. the Computer Graphics (CG) field, programmers are not well educated in the arts and their understanding of artistic needs is thus insufficient. In order to improve the education of CG students towards fine arts, we have created a BSc course on Art and Graphics design and have been running it for seven years. We consider this approach to education at a technologically oriented university as unusual and rare, but highly valuable for CG students. This paper describes the content of the course, summarizes the experience gained, and evaluates its usefulness for CG students in the subsequent MSc study program.

SENIOŘI A JEJICH KOMUNIKACE SE ZAŘÍZENÍMI V PROSTŘEDÍ INFORMAČNÍCH TECHNOLOGIÍ

  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    Senioři jsou nedílnou součástí populace, a tudíž jsou ovlivňováni vývojem společnosti. Jedním z aspektů je přizpůsobování vývoji společnosti v oblasti informačních technologií. Lidé se musí naučit zacházet s těmito technologiemi, poněvadž tyto technologie stále více pronikají do jejich každodenního života. S rozvojem informačních technologií vznikají i nové formy komunikace s počítači (nebo se zařízeními, která jsou počítací řízena). Dostáváme se tak k jiným formám komunikace než je komunikace založená na využívání klávesnice a myši. Ve většině případů tyto nové formy komunikace usnadňují práci s počítačem a mají tak potenciál pro využití seniory. Tak jako byli v minulosti senioři seznamováni s možnostmi klasické komunikace (klávesnice + myš) bude v současné době třeba seznamovat seniory i s novými možnostmi komunikace s počítači. Při vytváření prostředků pro nové formy komunikace hraje primární roli zkoumání konkrétních potřeb uživatelů (v našem případě seniorů). Na základě těchto zjištění jsou pak za použití systematických metod návrhu nová zařízení pro komunikaci navrhována a realizována. V příspěvku budou prezentována některá řešení, která jsou výsledkem výzkumu na ČVUT.

Game Aspects in Collaborative Navigation of Blind Travelers

  • DOI: 10.4018/978-1-4666-9522-1.ch022
  • Odkaz: https://doi.org/10.4018/978-1-4666-9522-1.ch022
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    This chapter shows how elements of gamification, i.e. game thinking and game mechanics, can be integrated into a collaborative navigation system for visually impaired persons in order encourage them to travel independently and thus improve their quality of life and self-confidence. The system supports independent navigation in unknown places by mediating help from another visually impaired person, who is familiar with the particular place. Our system utilizes a thermal user interface to introduce an additional communication channel and thus to increase the usability of the system. The system has been successfully enhanced by game elements and illustrates the potential of introducing game elements into these systems.

GraFooSha: Food Sharing for Senior Users

  • DOI: 10.1109/CogInfoCom.2015.7390602
  • Odkaz: https://doi.org/10.1109/CogInfoCom.2015.7390602
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    In this paper we introduce GraFooSha [GRAndmaFOOdSHAring] – a device that provides access to food sharing social network to senior users. GraFooSha is a physical device that incorporates deep-rooted concepts the target group is familiar with. A user study (N=4), conceptual design as well as industrial design is described in the paper. Followed by description of technical realization of mechanical, electronic and software components. The paper is concluded by evaluation with the target user audience (N=10).

Problems of Blind Chess Players

  • DOI: 10.1109/CogInfoCom.2015.7390587
  • Odkaz: https://doi.org/10.1109/CogInfoCom.2015.7390587
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    A chess game is very popular also for visually impaired players. To some extent we can see similarities to blindfold chess game of sighted players. However blindfold chess is played by master players only. Thus blind beginners are facing demanding conditions for playing chess. We started with initial observation of a game play of blind chess players and indicated signs of using mental images, limits in learning efficient chess play, or accessibility problems. We extracted 114 findings from the semi-structured interviews conducted with 5 blind advanced chess players. Based on these findings we propose directions for future research and development.

Collaborative navigation of visually impaired

  • DOI: 10.1007/s12193-013-0137-9
  • Odkaz: https://doi.org/10.1007/s12193-013-0137-9
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    A navigation system for visually impaired users can be much more efficient if it is based on collaboration among visually impaired persons and on utilising distributed knowledge about the environment in which the navigation task takes place. To design a new system of this kind, it is necessary to make a study of communication among visually impaired users while navigating in a given environment and on their regularly walked routes. A qualitative study was conducted to gain insight into the issue of communication among visually impaired persons while they are navigating in an unknown environment, and our hypotheses were validated by a quantitative study with a sample of 54 visually impaired respondents. A qualitative study was conducted with 20 visually impaired participants aimed at investigating regularly walked routes used by visually impaired persons. The results show that most visually impaired users already collaborate on navigation, and consider an environment description from other visually impaired persons to be adequate for safe and efficient navigation. It seems that the proposed collaborative navigation system is based on the natural behaviour of visually impaired persons. In addition, it has been shown that a network of regularly walked routes can significantly expand the urban area in which visually impaired persons are able to navigate safely and efficiently.

Context-sensitive, cross-platform user interface generation

  • DOI: 10.1007/s12193-013-0141-0
  • Odkaz: https://doi.org/10.1007/s12193-013-0141-0
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    User interfaces (UI) of software applications play a crucial part in communication with users. Attractive UIs often lead to market success, and thus there is a significant incentive to provide users with malleable UIs that can adapt as much as possible to their needs. However, such UIs require significant development and maintenance efforts. In this paper, we describe a context model based on ability-based design that is well suited to the purposes of automated UI generation. We then introduce a platform that delivers adaptive UIs across various platforms. We use runtime combinatoric optimisation to support usability and to generate context-sensitive UIs. Since the development and maintenance of such UIs can be complex, our platform integrates a module for code-inspection for data-oriented applications to reduce these efforts. It also utilises a visual editor to simplify manual UI design.

Komunikace seniorů s moderními technologiemi

  • Autoři: prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Gerontologie - současné otázky z pohledu biomedicíny a společenských věd. Praha: Karolinum, 2014. p. 227-246. ISBN 978-80-246-2628-4.
  • Rok: 2014
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    Kapitola pojednává o problémech seniorů při styku s informačními technologiemi. Jedná se jak o problémy spojené se zdravotním stavem seniorů, tak i o problémy psychologického rázu.

Problémy navigace seniorů v prostoru

  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    U seniorů dochází s přibývajícím věkem ke zhoršení orientace v prostoru. Se stárnutím populace bude četnost těchto problémů přibývat. Tento příspěvek se zabývá otázkou jak seniorům orientaci usnadnit za pomoci moderních technologií. Cílem příspěvku je poskytnout přehled možných řešení alespoň některých situací, se kterými se postižení senioři mohou setkat. Některá řešení jsou výsledky výzkumu prováděného dlouhodobě na ČVUT v Praze.

An evaluation tool for research of user behavior in a realistic mobile environment

  • DOI: 10.1007/s00779-011-0475-0
  • Odkaz: https://doi.org/10.1007/s00779-011-0475-0
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    User behavior is significantly influenced by the surrounding environment. Especially complex and dynamically changing environments (like mobile environment) are represented by a wide variety of extraneous variables, which influence the user behavior in an unpredictable and mostly uncontrolled way. For researchers, it is challenging to measure and analyze the user behavior in such environments. We introduce a complex tool-the IVE tool-which provides a unique way of context visualization and synchronization of measured data of various kinds. Thanks to this tool it is possible to efficiently evaluate data acquired during complex usability tests in a mobile environment. The functionality of this tool is demonstrated on the use case "Navigation of visually impaired users in the building with support of a navigation system called NaviTerier." During the experiment, we focused on collection and analysis of data that may show user stress and which may influence his/her ability to n

Avatar and Dialog Turn-Yielding Phenomena

  • DOI: 10.4018/jthi.2013040105
  • Odkaz: https://doi.org/10.4018/jthi.2013040105
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    Turn-taking and turn-yielding phenomena in dialogs receive increasing attention nowadays. A growing number of spoken dialog systems inspire application designers to humanize people’s interaction experience with computers. The knowledge of psychology in discourse structure could be helpful in this effort. In this paper the authors explore effectiveness of selected visual and vocal turn-yielding cues in dialog systems using synthesized speech and an avatar. The aim of this work is to detect the role of visual and vocal cues on dialog turn-change judgment using a conversational agent. The authors compare and study the cues in two experiments. Findings of those experiments suggest that the selected visual turn-yielding cues are more effective than the vocal cues in increasing correct judgment of dialog turn-change. Vocal cues in the experiment show quite poor results and the conclusion discusses possible explanations of that.

Platform-Aware Rich-Form Generation for Adaptive Systems through Code-Inspection

  • DOI: 10.1007/978-3-642-39062-3_55
  • Odkaz: https://doi.org/10.1007/978-3-642-39062-3_55
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    This paper introduces a framework for adaptive user interface (UI) development. Our framework facilitates development and maintenance efforts through code inspection. Information already captured elsewhere is reused in the UI rather than restated. In our approach, inspected information is transformed in multiple stages through an aspect-oriented approach. As each stage may be influenced at runtime, our approach allows systems to be built with context-aware adaptive UIs. In addition, the selection of UI elements and their layout is generated using optimal metrics. The output of our approach can be influenced by the target platform. Our approach to UI is shown in detail in a case study.

Simulation Of Patient Data Monitoring

  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    Patient data monitoring is in general very complicated tasks, which should take into account needs of multiple types of patient. However, complex verification of such processes is not feasible to evaluate with real users. Goal of VERITAS project is to provide a framework for simulation of virtual users in virtual environment in order to investigate potential behavior of various types of users. Virtual users were created based on measurements of parameters of real persons. The simulation shows the patient data both as qualitative and quantitative data. Based on the results, the monitoring processes may be optimized.

A Comparative Study of Pitch-Based Gestures in Nonverbal Vocal Interaction

  • Autoři: Poláček, O., Sporka, A., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: IEEE Transactions on Systems, Man, and Cybernetics - part A: Systems and Humans. 2012, 42(6), 1567-1571. ISSN 1083-4427.
  • Rok: 2012
  • DOI: 10.1109/TSMCA.2012.2201937
  • Odkaz: https://doi.org/10.1109/TSMCA.2012.2201937
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    Nonverbal vocal interaction (NVVI) is an input modality by means of which users control the computer by producing sounds other than speech. Previous research in this field has focused mainly on studying isolated instances of NVVI (such as mouse cursor control in computer games) and their performance. This paper presents a study with 36 elderly users in which basic NVVI vocal gestures (commands) were ranked by their perceived fatigue, satisfaction, and efficiency. The results of this study inspired a set of NVVI gesture design guidelines that are also presented in this paper.

An initial study of effects of temporary disabilities

  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    The research of disabilities and their effects on the usability of the user interfaces has long since been established itself in the field of the human-computer interaction. The target groups of this research mostly include people with permanent disabilities (vision-, motor-, or hearing-related). Due to a number of reasons (illness, injury, etc.), a user may enter the state of disability only for a limited amount of time (temporary disability).

Comparison of two text entry methods on interactive TV

  • Autoři: Sporka, A., Poláček, O., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Proceedings of the 10th European conference on Interactive tv and video. New York: ACM, 2012. p. 49-52. EuroiTV '12. ISBN 978-1-4503-1107-6.
  • Rok: 2012
  • DOI: 10.1145/2325616.2325627
  • Odkaz: https://doi.org/10.1145/2325616.2325627
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    This paper describes a study with 18 participants on two text input methods for use with interactive television, The Numpad Typer (TNT) and TwiceTap. Both methods were designed for use with a common infra-red remote control. Each character is entered using two keystrokes. After one hour and forty minutes of practice, split into 5 sessions, the participants were able to type faster than 9 words per minute. While the performance of both methods was similar, the TwiceTap required a smaller number of keystrokes per character, was less prone to errors, and was found to be more comfortable by the participants. Over time, the use of frequent n-grams in TwiceTap was reinforced while the use of infrequent n-grams was suppressed.

Implementation of Adaptive Multimedia Application Concept in iDTV Environment

  • DOI: 10.1007/978-3-642-35145-7_13
  • Odkaz: https://doi.org/10.1007/978-3-642-35145-7_13
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    This paper describes a model of adaptation of multimedia application. The adaptation is based on user's progress in using a content of the application and a plan that defines long-time usage strategy of the application. The model was applied to education application but it can be used also in other use-cases. This model was designed to be easy to implement and use, and it is an alternative to robust learning models. The implementation of the model is presented on Physical Exercise application.

Mutual Communication in Navigation of Visually Impaired

  • DOI: 10.1109/CogInfoCom.2012.6421954
  • Odkaz: https://doi.org/10.1109/CogInfoCom.2012.6421954
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    Navigation system for visually impaired users can be much more efficient if it will be based on collaboration and utilization of distributed knowledge about the environment. For design of such a new system a research of communication of visually impaired users while navigating them self in certain environment is essential. The qualitative study has been conducted to gain insight into the problem of communication of visually impaired during navigation in unknown environment and hypotheses have been validated by quantitative study with sample of 54 visually impaired respondents. The results show that majority of visually impaired users already collaborate on navigation and consider environment description from other visually impaired sufficient for navigation and that the proposed collaborative navigation system has basis in natural behavior of the visually impaired users.

NAVITERIER - INDOOR NAVIGATION SYSTEM FOR VISUALLY IMPAIRED

  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    This paper presents key findings gathered during development of indoor navigation system called NaviTerier [1]. This system is targeted to visually impaired users who want to navigate independently inside large buildings like hospital, library, university, etc. System is based on structured description of environment that is provided to the user by special application installed on a smartphone.

NÁVRH UŽIVATELSKÉHO ROZHRANÍ INTERAKTIVNÍ DIGITÁLNÍ TELEVIZE PRO SENIORY

  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    Cílem projektu bylo navrhnout uživatelské rozhraní digitální televize připojené přes Internet (IPTV) pro cílovou skupinu seniorů a vyvinout odpovídající prototyp spustitelný na běžně do‐stupných set‐top boxech. Vzhledem ke skutečnosti, že poskytovatelé IPTV často nabízejí velké množství různých televizních stanic, zaměřili jsme se na vyhledávání a správu pořadů, namísto klasického přístupu přes kanály. Před samotným návrhem uživatelského rozhraní jsme provedli uživatelský výzkum formou hloubkových rozhovorů, dotazníků a ohniskové skupiny s celkem 97 seniory. Uživatelský výzkum nám umožnil lépe porozumět potřebám uživatele a definovat budoucí funkcionalitu prototypu. Prototyp uživatelského rozhraní byl vytvořen během tří ite‐rací, kdy byl prototyp v každé iteraci testován v testech použitelnosti celkem se sedmi seniory. Nalezené problémy v použitelnosti byly vždy odstraněny v následující iteraci. Během testů jsme nejen zjistili drobné problémy v použitelnosti, ale setkali jsme se i s konceptuálními pro‐blémy specifickými pro cílovou skupinu, jako například navigace kurzoru v dlouhém seznamu, navigace uživatele v hierarchickém menu nebo problém s návrhem filtru pro hledání pořadu.

On Tools for Game Interaction Analysis

  • DOI: 10.2316/P.2012.766-008
  • Odkaz: https://doi.org/10.2316/P.2012.766-008
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    Improving accessibility of games was recently identified as one of approaches how to increase the number of potential players. In this paper we propose and discuss several tools for analysing the interaction of a player and a computer game in order to increase accessibility of the game. We focus on interaction devices that use key presses, a mouse cursor movement and mouse clicks for the interaction with the game. Our tools monitor the user interactions during game play and then visualize the interaction of the user through the devices with the game.

Predictive Scanning Keyboard Oparated by Hissing

  • DOI: 10.2316/P.2012.766-002
  • Odkaz: https://doi.org/10.2316/P.2012.766-002
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    This paper presents a new predictive scanning strategy based on the N-ary search algorithm. This strategy is demonstrated on three virtual keyboards operated by hissing - a novel interaction method suitable for severely motor impaired people with speech impairments. An experiment with 39 users was conducted to compare the keyboards to three existing scanning keyboards. The participants were able to enter a text by hissing at the speed of 10-16 characters per minute. Experiment results have also shown that a scanning strategy must be predictable for the users as they need to plan their actions in advance.

PROBLÉMY TVORBY UŽIVATELSKÝCH ROZHRANÍ PRO POSTIŽENÉ UŽIVATELE

  • Autoři: prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Stárnutí 2012. Praha: Psychiatrické centrum Praha, 2012. pp. 126-+. ISBN 978-80-87142-20-2.
  • Rok: 2012
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    V příspěvku je popsána problematika návrhu komunikace mezi seniory (případně lidmi se zdra‐votním postižením) a různými technologiemi, které se stále více stávají součástí každodenního života. Obzvláště senioři, jejichž životní zkušenost je rozdílná od zkušeností mladší generace, mají s touto komunikací problémy. K tomu dále přistupují různé zdravotní problémy, které mají vliv na zacházení s těmito technologiemi. Proto je třeba tyto skutečnosti zohlednit při návrhu komunikace se zařízeními (obecně technologiemi) u kterých je předpoklad, že je senioři budou používat.

Using Annotated Task Models for Accessibility Evaluation

  • DOI: 10.1007/978-3-642-31522-0_47
  • Odkaz: https://doi.org/10.1007/978-3-642-31522-0_47
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    Evaluation of application accessibility is a challenging task that requires an intensive testing with potential application users. An alternative to user tests is the model based testing using simulations. The simulations provide important feedback about application accessibility particularly when it is hard to involve the target users in the tests which is often the case for users with disabilities. In this paper we propose a methodology of providing the quickly and easily necessary data for the simulations. In particular we show how to annotate task models using application walkthroughs logs that is data obtained by recording the application usage. We create annotated task models, which together with the user models are suitable for simulation of application usage by virtual users with various disabilities. We present tools for recording and processing of the application walkthrough logs and tools for the interactive task model annotation. Finally, we provide actual examples of task model annotation on three scenarios involving the Second Life metaverse.

Corrected Human Vision System and the McGurk Effect

  • Autoři: Kunc, L., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: HCI International 2011. Heidelberg: Springer, 2011. pp. 345-349. Communications in Computer and Information Science. ISSN 1865-0929. ISBN 978-3-642-22094-4.
  • Rok: 2011
  • DOI: 10.1007/978-3-642-22095-1_70
  • Odkaz: https://doi.org/10.1007/978-3-642-22095-1_70
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    The McGurk effect test is a method to evaluate articulation of talking heads. Our work addresses the issue of corrected vision influence on the McGurk effect perception. We conducted an experiment to investigate this influence. Measured data shows different perception of participants with corrected vision in some cases. The results could help talking head evaluators to compare talking head implementations each other with elimination of the influence of corrected vision.

Developer's Support For Creating Accessible Applications

  • Autoři: Vystrčil, J., doc. Ing. Zdeněk Míkovec, Ph.D., Havelka, O., Bien, R., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Accessibility Reaching Everywhere Conference Proceedings. Leuven: Leuven University, 2011. pp. 102-109. AEGIS Open Accessibility Everywhere: Groundwork, Infrastructure, Standards.
  • Rok: 2011
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    This paper presents two developer tools created that support the process of development of accessible applications. These tools were created within AEGIS Project. The first tool is targeted to developers not experienced in the field of accessibility and helps them with orientation in the variety of user disabilities. It makes easier the process of prioritization of existing accessibility guidelines in a way that suits the given target group and the application developed. The second tool provides direct support for accessible rich internet applications (ARIA) development. It is a plugin for NetBeans IDE and it offers palettes of accessible UI components that can be used to build the accessible application.

How To Create Real Accessible Aria

  • Autoři: Vystrčil, J., doc. Ing. Zdeněk Míkovec, Ph.D., Karšulín, M., Šimek, K., Špaček, P., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Accessibility Reaching Everywhere Conference Proceedings. Leuven: Leuven University, 2011. pp. 144-156. AEGIS Open Accessibility Everywhere: Groundwork, Infrastructure, Standards.
  • Rok: 2011
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    In this paper we present a new methodology and enhancements of the development process for implementation of accessible RIA applications. We have identified and analysed most important accessibility issues of typical RIA applications. Based on this analysis we have proposed solutions on the level of RIA components and the level of RIA applications. Set of 11 heuristics is presented to help RIA developers with quick checking of RIA application accessibility. We propose new approach how to involve visually impaired users into testing process and developed RIA applications.

Humsher: a predictive keyboard operated by humming

  • DOI: 10.1145/2049536.2049552
  • Odkaz: https://doi.org/10.1145/2049536.2049552
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    This paper presents Humsher -- a novel text entry method operated by the non-verbal vocal input, specifically the sound of humming. The method utilizes an adaptive language model for text prediction. Four different user interfaces are presented and compared. Three of them use dynamic layout in which n-grams of characters are presented to the user to choose from according to their probability in given context. The last interface utilizes static layout, in which the characters are displayed alphabetically and a modified binary search algorithm is used for an efficient selection of a character. All interfaces were compared and evaluated in a user study involving 17 able-bodied subjects.

Pregnancy Test for the Vision-Impaired Users

  • Autoři: Hyková, T., Sporka, A., Vystrčil, J., Ing. Martin Klíma, Ph.D., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Universal Access in Human-Computer Interaction. Heidelberg: Springer, 2011. pp. 335-344. Lecture Notes in Computer Science. ISBN 978-3-642-21656-5.
  • Rok: 2011
  • DOI: 10.1007/978-3-642-21657-2_36
  • Odkaz: https://doi.org/10.1007/978-3-642-21657-2_36
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    The vision-impaired people manage to cover most of their everyday needs with the help of technological equipment. Some needs, however, still require special attention: For example, commonly used pregnancy tests provide results that may be interpreted only visually. The users of these tests who are vision-impaired are dependent on a help of a sighted person which is a drastic invasion of users' privacy. This paper proposes a solution to this problem: A design of a prototype of a system allowing the vision-impaired users to interpret the results of a pregnancy test using a PC with scanner is presented and evaluated.

UI Generation for Data Visualisation in Heterogenous Environment

  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    The process of data visualisation can be very complex and an urgent need for interactive control of this process is imminent. Solution to this problem is in the field of user interfaces by means of which the user can efficiently control all aspects of the visualisation. One of the fields where a lot of challenges for development of new user interfaces exist is data visualisation in heterogeneous environment. In such case data are visualised on various devices that have different capabilities. This fact influences not only the results of the visualisation process but also design and implementation of user interface for each particular device. In situation when an application is capable to run on various devices it is rather problematic to manually create individual user interfaces, one for each device. In this paper a concept and results of automatic generation of user interfaces in a heterogeneous environment is described.

Usability in the Czech Republic

  • DOI: 10.1007/978-0-85729-304-6_8
  • Odkaz: https://doi.org/10.1007/978-0-85729-304-6_8
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    In this paper we give an overview of the development of usability activities in the Czech Republic. We start with the historical background - in terms of general context in which usability issues were born in this country - and then we describe specific usability issues that are typical for the usability community in this country. Special attention is paid to mutual links between research at universities and industrial activities in various companies active in the Czech Republic. There exists a mutual cross-fertilization between these two activities that results in a fruitful cooperation between both sectors. This fact is demonstrated in this paper by several projects that ran in last a few years. Last but not the least the importance of cooperation between research and education at universities has been stressed. In such a way students come in touch with up-to-date research problems and get an opportunity to participate in the leading-edge research in this country.

User Interface and Workflow Platform

  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    Multiple attempts [1-5] to use automatic user interface generation were performed, but none of them is widely adopted. The main issues of design and implementation are the overall complexity of input (input models) to the user interface generators, platform dependency, and corresponding poor scalability. From users' perspective, automatically generated user interfaces often look too artificial, form-like and over-complicated. Current methods of the automatic design do not allow the developers to explicitly specify the importance of individual elements of the input model and the desired "look and feel" of the resulting user interface. The former problem does not allow the user interface generators to construct the user interface where the elements are positioned based on their actual importance or even omitted (e.g due to screen size constraints). The latter problem makes all user interfaces look alike and thus diminishing the potential to articulate a user experience.

Vector Keyboard for Android Platform-Based Devices

  • DOI: 10.1007/978-3-642-21793-7_49
  • Odkaz: https://doi.org/10.1007/978-3-642-21793-7_49
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    This paper introduces a Vector keyboard for mobile devices with a touchscreen. Typing is produced by simple strokes sourcing from one of four blocks of letters. A user study was made comparing this keyboard with standard QWERTY, ABC and a Mobile keyboards. The study resulted in a comparable performance in terms of speed and typing with all the named layouts but QWERTY. The user preference and subjective evaluation is in contrast to the performance measured preferring the Vector keyboard over ABC and Mobile

VR and HCI Labs at the Czech Technical University in Prague

  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    This paper describes the mission, objectives, and research directions of the Department of Computer Graphics and Interaction of the Czech Technical University in Prague. It also gives a brief overview of the running research projects and collaborations.

Framework for Visual Analysis of User Behaviour in Ambient Intelligence Environment

  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    In this paper we introduce a framework for testing applications in ambient intelligence environments. The concept is derived from the methodologies of desktop application usability testing combined with evaluation of user behaviour in an ambient inmtelligence environment. It is based on our experience with user behaviour recording, which is visualized and investigated mainly in virtual environment. The visualization serves as a tool for analyzing complex situations and detection of usability issues in ambient intelligence applications.

Návrh a testování uživatelských rozhraní

  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    Správným návrhem a testováním uživatelských rozhraní interakčních systémů se zabývá obor HCI (Human Computer Interaction). Následující text pojednává o řadě metodik a technik, které obor HCI přináší, určených pro návrh systémů, které budou použitelné a pro uživatele příjemné. Popisuje metodiku UCD (User-Centered Design). Ukazuje jak provádět uživatelský výzkum a modelovat persony - hypotetické uživatele. Dále ukazuje jak do cyklu vývoje systému efektivně zavést proces prototypování a vyhodnocování.

New Way of Vocal Interface Design: Formal Description of Non-verbal Vocal Gestures

  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    In this paper we introduce a novel approach to formal description of non-verbal vocal gestures and implementation of a general recognition system according to the formal description. It was successfully applied to existing non-verbal vocal applications such as mouse emulation by humming or Tetris. Non-verbal vocal interaction (NVVI) is a proven assistive technology and our system accelerates the process of building the NVVI applications. The system is targeted to both designers and users with disabilities who use the recognition system incorporated in an assistive application. Among others, the formal description is capable of providing continuous control of user interface elements and solving inaccuracy in the pronunciation of vocal gestures.

Usability Issues in ICT Assisted Learning

  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    One of key problems that users meet when interacting with any software product is easiness of communication with such a product - we speak about usability issues. This problem has not been addressed properly in case of software products used in ICT assisted learning. In this paper we will deal with usability issues in this field. There are various systems that support ICT supported learning like e-learning, m-learning, t-learning etc. We will present experience with usability testing in t-learning (iDTV - Interactive Digital Television) environment. The topic that was taught in the iDTV learning module was cultural heritage. This topic offers a possibility to use various media (text, pictures, videos etc.) together with different ways of interaction. In such a way the requirements for usability in this environment are rather complex. The paper describes the usability issues handled in individual stages of the learning module development ...

Cultural Heritage, User Interfaces and Serious Games at CTU Prague

  • DOI: 10.1109/VSMM.2009.38
  • Odkaz: https://doi.org/10.1109/VSMM.2009.38
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    Cultural heritage presentation is a topic we at CTU Prague deal with more than ten years. In this paper we present our experience with user interface design where serious games paradigm has been utilized. The survey of selected projects represents various technologies and approaches for cultural heritage data handling that includes data acquisition, presentation, interaction and educational issues. The aim of our activities was to develop a systematic approach to the user interface design for the given class of applications.

Music alphabet for low-resolution touch displays

  • Autoři: Poláček, O., Sporka, A., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Proceedings of the International Conference on Advances in Computer Enterntainment Technology. New York: ACM, 2009. pp. 298-301. ISBN 978-1-60558-864-3.
  • Rok: 2009
  • DOI: 10.1145/1690388.1690441
  • Odkaz: https://doi.org/10.1145/1690388.1690441
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    In this paper we present a novel approach to writing music on handheld pen-based devices which has been developed during the implementation of MusicMan, our pen-based music score editor. A new alphabet of music symbols has been designed especially for use on devices with small screens by musicians skilled in writing the music by hand. Our alphabet is based on simplification of the common Western music notation symbols, making them easier to write on PDA while retaining their overall feel. A user study described in this paper revealed that the alphabet is significantly faster, easier-to-use and more accepted by the firsttime users of PDA than the state-of-art method for pen-based writing of music.

Prototyping tool for t-learning courses

  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    In this paper a prototyping tool for t-learning courses is presented. The prototyping tool allows to create prototypes of t-learning courses and easily test the created prototypes. The prototyping tool is based on our concepts of t-learning. The concepts are also presented in this paper. With the prototyping tool the process of development of t-learning course is more efficient and less error prone.

Study on Sensitivity to ECA Parameters

  • Autoři: Kunc, L., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Intelligent Virtual Agents. Enschede: University of Twente, Laboratory of Measurement and Instrumentation, 2009. pp. 521-522. Lecture Notes in Computer Science. ISSN 0302-9743. ISBN 978-3-642-04379-6.
  • Rok: 2009
  • DOI: 10.1007/978-3-642-04380-2_72
  • Odkaz: https://doi.org/10.1007/978-3-642-04380-2_72
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    The behavior of an ECA is a research question. Part of agent's visual behavior is its appearance. Besides the "static" appearance there is another way to change appearance - considering "dynamic" appearance. This paper discusses a selection of appearance parameters and provides statistical results of a pilot user study on sensitivity to these parameters to find out importance of individual parameters. Personalized settings of these parameters could lead us to more enjoyable embodied agents and to better communication with an agent.

Web toolkits accessibility study

  • DOI: 10.1145/1595061.1595062
  • Odkaz: https://doi.org/10.1145/1595061.1595062
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    Access to increasing number of web applications is very good news especially for disabled people. These applications become richer and offer wide variety of services used in everyday's life (document creation, instant messaging, data storage, email communication, social networking, etc.). The problem is that at the same time these rich internet applications (RIA) become less accessible. There is a Web Accessibility Initiative (WAI) 2 related to W3C 1 which is trying to cope with this problem. In particular the Accessible Rich Internet Application suite of W3C (WAI-ARIA) 3 is describing how to improve the accessibility of dynamic web content and advanced user interface controls in rich internet applications.

Combination of models and logs for visual analysis of data from usability evaluation

  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    In this paper we present a new visualization method for analysis of the usability test data provided in a log file form. In contrast to the traditional approach, our method uses also the data from the application task and dialog models to give the usability expert detailed log file visualizations with alternative paths. We show the use of the new approach on the example of voice applications, where it appears to be especially suitable. In addition, we describe architecture of a work-in-progress analytical tool that supports such dialog and task based visualizations. As the task models foster deeper understanding of usability data, we believe this approach makes it much easier for developers and for usability experts to communicate over the usability issues.

Creation and visualization of user behavior in ambient intelligent environment

  • Autoři: Ing. Ivo Malý, Ph.D., Cuřin, J., Kleindienst, J., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: 12th International Conference on Information Visualisation (IV08) - International Symposium of Human-Computer Interaction. Los Alamitos: IEEE Computer Society, 2008. p. 497-502. ISBN 978-0-7695-3268-4.
  • Rok: 2008
  • DOI: 10.1109/IV.2008.38
  • Odkaz: https://doi.org/10.1109/IV.2008.38
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    Ambient intelligence is a rapidly developing field producing a new generation of applications and services demanding new, more complex strategies for usability testing and evaluation. In this paper, we identify caveats of traditional methods of application usability testing when applied to an ambient intelligent environment and we introduce a method for unified analysis of user behavior using a virtual environment visualization. For the usability testing in ambient environments, we propose to transform data (both data recorded in real settings and data artificially created by experts) into a virtual environment to cope with the following issues: a) overwhelming amount of data, b) proprietary data formats, and c) ethical codices issues. We describe a tool for creation of expert evaluation data and for transformation of data from video recordings and illustrate its use on two cases.

Talking Head - Visualizations & Level of Detail

  • Autoři: Kunc, L., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Proceedings International Conference Visualisation 2008. Los Alamitos: IEEE Computer Society, 2008. p. 129-134. ISBN 978-0-7695-3271-4.
  • Rok: 2008
  • DOI: 10.1109/VIS.2008.19
  • Odkaz: https://doi.org/10.1109/VIS.2008.19
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    Embodied conversational agents are fast growing area of research interest. These agents allow interacting with computers in a natural way. The usage of agents is closely associated with the problem of facial animation. Realistic real-time facial animation is very computational expensive. This work is dedicated to the problem of deformation visualization of pseudo-muscles and head model mesh during the speech using the extended Waters pseudo-muscle head model for animation. These visualizations help us to find out a new way of dynamic level of detail. By reducing activity of particular groups of muscles we can achieve better animation speeds. Running the experiments based on three scenarios proved that these speed-ups are noticeable.

Talking Head as Life Blog

  • Autoři: Kunc, L., Kleindienst, J., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Text, Speech and Dialogue (Lecture Notes in Computer Science (LNCS) 5246). Heidelberg: Springer, 2008. p. 365-372. ISSN 0302-9743. ISBN 978-3-540-87390-7.
  • Rok: 2008
  • DOI: 10.1007/978-3-540-87391-4_47
  • Odkaz: https://doi.org/10.1007/978-3-540-87391-4_47
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    The paper describes an experimental presentation system that can automatically generate dynamic ECA-based presentations from structured data including text context, images, music and sounds, videos, etc. Since an ECA represents a rich channel for conveying both verbal and non-verbal messages, we are researching ECAs as facilitators that transpose "dry" data such as diaries and blogs into more lively and dynamic presentations based on ontologies. We constructed our framework on an existing toolkit ECAF that supports runtime generation of ECA agents. We describe the extensions of the toolkit and give an overview of the current system architecture. We describe the particular Grandma TV scenario, where a family uses the ECA automatic presentation engine to deliver weekly family news to distant grandparents. Recently conducted usability studies suggest the pros and cons of the presented approach.

Vocal Control of a Radio-controlled Car.

  • Autoři: Sporka, A., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: ACM SIGACCESS Accessibility and Computing. 2008, 4(91), 3-8. ISSN 1558-2337.
  • Rok: 2008
  • DOI: 10.1145/1394427.1394428
  • Odkaz: https://doi.org/10.1145/1394427.1394428
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    Increasing participation of the community of computer users with special needs in computer entertainment brings about the need for understanding the benefits and drawbacks of different assistive input techniques and devices that can be used for controlling the entertainment experience. Especially challenging is the support of the control of the arcade games, such as Tetris [7] or Breakout [2], where while only a limited number of game commands is required, the users must issue these in a rapid response to the evolving gameplay - and many assistive devices are unable to cope with this problem. A promising set of techniques is provided by employing the voice as an input device.

A Comparative Longitudinal Study of Non-verbal Mouse Pointer

  • Autoři: Mahmud, M., Sporka, A., Kurniawan, S.H., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Human-Computer Interaction - INTERACT 2007, 11th IFIP TC 13 International Conference, Rio de Janeiro, Brazil, September 10-14, 2007, Proceedings, Part II. Berlin: Springer-Verlag, 2007. pp. 489-502. ISSN 0302-9743. ISBN 978-3-540-74799-4.
  • Rok: 2007
  • Pracoviště: Katedra počítačů
  • Anotace:
    A longitudinal study of two non-speech continuous cursor control systems is presented in this paper: Whistling User Interface (U3I) and Vocal Joystick (VJ). This study combines the quantitative and qualitative methods to get a better understanding of novice users' experience over time. Three hypotheses were tested in this study. The quantitative data show that U3I performed better in error rate and in simulating a mouse click; VJ was better on other measures. The qualitative data indicate that the participants' opinions regarding both tools improved day-by-day. U3I was perceived as less fatiguing than VJ. U3I approached the performance of VJ at the end of the study period, indicating that these two systems can achieve similar performances as users get more experienced in using them. This study supports two hypotheses but does not provide enough evidence to support one hypothesis.

Accessibility Research at the Czech Technical University

  • Pracoviště: Katedra počítačů
  • Anotace:
    This paper provides a short summary and bibliography of the accessibility research at the Czech Technical University in Prague. It also presents an overview of our collaboration with our industrial partners that is related to the assistive technologies as well as our training and networking activities.

Longitudinal study of continuous non-speech operated mouse pointer

  • Autoři: Sporka, A., Kurniawan, S.H., Mahmud, M., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: CHI '07 extended abstracts on Human factors in computing systems. New York: ACM, 2007. pp. 2669-2674. ISBN 978-1-59593-642-4.
  • Rok: 2007
  • Pracoviště: Katedra počítačů
  • Anotace:
    This paper reports a longitudinal study of a non-speech input-controlled continuous cursor control system: Whistling User Interface (U3I). This study combines quantitative (target acquisition tasks, subjective ratings and a simple reaction time test) and qualitative (interview) methods to arrive at a more nuanced understanding novice users. experience over time. The progress of training of ten participants has been observed. The study shows that the performance improved over time and plateaued on day four of the five days of the study.

Personalized E-learning in Interactive Digital Television Environment

  • Pracoviště: Katedra počítačů
  • Anotace:
    The paper deals with the problems of personalization of e-learning in the interactive digital television environment. The main problem discussed is the personalization of additional content synchronized with broadcasted AV stream. The broadcasted AV stream is fully controlled by the broadcaster and the user has no chance to influence it. The majority of existing concepts performs personalization above the course level (the content of the course is not personalized) or they are suitable for asynchronous content only (e.g. video on demand). In this paper a solution for personalization of the additional content synchronized with the AV stream is proposed. We are focusing on a standardized solution based on the SCORM standard.

Physical Human Factor in Non-speech Input

  • Autoři: Sporka, A., Kurniawan, S., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Prooceedings of the CHI 2007 Workshop Striking a C[h]ord: Vocal Interaction in Assistive Technologies, Games, and More. Praha: ČVUT FEL, Katedra počítačů, 2007. pp. 13-16.
  • Rok: 2007
  • Pracoviště: Katedra počítačů
  • Anotace:
    Recently, numerous systems were introduced that are based on interpretation of non-speech sounds, such as humming, whistling, or hissing. Different physical characteristics of these sounds (pitch, volume, and timbre) and their profiles over time are analyzed in the real-time and the application reacts immediately in a defined way. For example, the pitch of a tone produced in humming can be mapped to the velocity of a game figure ...

Visualization of users' activities in a specific environment

  • DOI: 10.1109/WSC.2007.4419668
  • Odkaz: https://doi.org/10.1109/WSC.2007.4419668
  • Pracoviště: Katedra počítačů
  • Anotace:
    Evaluation of user interface design is usually based on usability testing methods. In this paper we analyzed and described the user behavior in the form of the user model. The user model is built on a data set which was acquired through observation of user behavior. The criterion we use for the evaluation of the usability of interface design is the user cognitive load. We present different tools for visualization, simulation and easier analysis of the user model. Because each of the methods and tools presented use only part of the user model, in the end we present methods on how to use the complete user model to correctly describe user behavior. In order to understand such a complex model we need to have a proper visualization tool. The concept of such a visualization tool is presented at the end of this paper.

Visualization techniques utilizing the sensitivity analysis of models

  • Autoři: Kondapaneni, I., Kordík, P., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Proceedings of the 2007 Winter Simulation Conference. New York: ACM, 2007. pp. 730-737. ISBN 1-4244-1306-0.
  • Rok: 2007
  • Pracoviště: Katedra počítačů
  • Anotace:
    Models of real world systems are being increasingly generated from data that describes the behaviour of systems. Data mining techniques, such as Artificial Neural Networks (ANN), generate models almost independently and deliver accurate models in a very short time. These models have complex internal structures that are difficult to interpret and we have very limited information about the credibility of their output.In this paper, we present visualization techniques based on sensitivity analysis aimed to discover relationships between variables and to recognize regions where the output is credible and where it is not. We have developed visualization techniques both for regression and classification problems. Finally, we present an algorithm that is able to automatically locate the most interesting visualizations in the vast multidimensional space of input variables.

Acoustic Control of Mouse Pointer

  • Autoři: Sporka, A., prof. Ing. Pavel Slavík, CSc., Kurniawan, S.H.
  • Publikace: Universal Access in the Information Society. 2006, 4(3), 237-245. ISSN 1615-5289.
  • Rok: 2006
  • Pracoviště: Katedra počítačů
  • Anotace:
    This paper describes the design and implementation of a system for controlling mouse pointer using non-verbal sounds such as whistling and humming. Two control modes have been implemented-an orthogonal mode (where the pointer moves with variable speed either horizontally or vertically at any one time) and a melodic mode (where the pointer moves with fixed speed in any direction). A preliminary user study with four users indicates that the orthogonal control was easier to operate and that the humming was less tiring for the users than whistling. The developed system may contribute as an inexpensive, alternative pointing device for people with motor disabilities.

Beyond traditional interaction in a mobile environment: New approach to 3D scene rendering

  • DOI: 10.1016/j.cag.2006.07.022
  • Odkaz: https://doi.org/10.1016/j.cag.2006.07.022
  • Pracoviště: Katedra počítačů
  • Anotace:
    In this paper the problems of user interaction in a mobile environment are investigated. Interaction in this environment imposes new requirements both on UI designers an the users. This paper deals in particular with problems of graphical interaction in a mobile environment. A rendering technique that enables rendering and annotation of objects in a 3D scene on mobile devices is presented.

Car simulation environment for specialized research

  • Pracoviště: Katedra počítačů
  • Anotace:
    In this paper we describe CityRider, a car simulator, which we developed to research the usability of in-car equipment. The simulator consists of a landscape generator, the simulator engine itself and a hardware setup. The landscape generator is able to create a high variety of cities.

Collaborative Learning in Mobile Environment

  • Pracoviště: Katedra počítačů
  • Anotace:
    In this paper we introduce a system for real time collaboration and sharing of graphical data in the mobile environment. The main innovative feature of the system is involvement of semantic information into the process of data sharing and mainly into the customization of the data for individual users. Each user involved in the collaboration gets individually personalized data. the system is, thanks to the semantic information, able to ensure a fluent collaboration even if the data are personalized differently for each user.

Digital Archiving of Specific Scientific Information in the Czech Republic

Explicative Document Reading Controlled by Non-speech Audio Gestures

  • Autoři: Sporka, A., prof. Ing. Pavel Slavík, CSc., Žikovský, P.
  • Publikace: Text, Speech and Dialogue. 9th International Conference, TSD 2006, Brno, Czech Republic, September 11-15, 2006. Proceedings. Berlin: Springer, 2006. pp. 695-702. ISSN 0302-9743.
  • Rok: 2006
  • Pracoviště: Katedra počítačů
  • Anotace:
    There are many situations in which listening to a text produced by a text-to-speech system is easier or safer than reading, for example when driving a car. Technical documents, such as conference articles, manuals etc., usually are comprised of relatively plain and unequivocal sentences. These documents usually contain words and terms unknown to the listener because they are full of domain specific terminology. In this paper, we propose a system that allows the users to interrupt the reading upon hearing an unknown or confusing term by a non-speech acoustic gesture (e.g. "uhm?"). Upon this interruption, the system provides a definition of the term, retrieved from Wikipedia, the Free Encyclopedia. The selection of the non-speech gestures has been made with a respect to the cross-cultural applicability and language independence. In this paper we present a set of novel tools enabling this kind of interaction.

Jabber Based Protocol for Collaborative Mobile Work

  • Pracoviště: Katedra počítačů
  • Anotace:
    In this paper we introduce an application level protocol for sharing of XML based data. This protocol is especially designed for mobile environment. It is able to deal with unreliability of the mobile wireless networks where the client´s bandwith is limited and the connection may frequently fail. We describe the synchronization process of the data from the client side as well as from the server side. The protocol can deal with data synchronization conflicts and can prevent them in most cases by using data locking mechnism. Data buffering mechanism from client and server side is supporting the reestablishing of data consistency after connection failure. The protocol has been verified by means of scenario from a facility management domain.

MUMMY - mobile knowledge management

  • Pracoviště: Katedra počítačů
  • Anotace:
    The project MUMMY funded by the European Commission develops means to improve the efficiency of mobile business processes through mobile, personalized knowldge management. MUMMY approaches the challenges of mobile work processes. In this paper the achivements of MUMMY are introduced and individual components are briefly described.

Non-speech Input and Speech Recognition for Real-time Control of Computer Games

  • Autoři: Sporka, A.J., Kurniawan, S.H., Mahmud, M., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Proceedings of The Eight International ACM SIGACCESS Conference on Computers and Accessibility. New York: ACM Press, 2006. p. 213-220. ISBN 1-59593-290-9.
  • Rok: 2006
  • DOI: 10.1145/1168987.1169023
  • Odkaz: https://doi.org/10.1145/1168987.1169023
  • Pracoviště: Katedra počítačů
  • Anotace:
    This paper reports a comparison of user performance (time and accuracy) when controlling a popular arcade game of Tetris using speech recognition or non-speech (humming) input techniques. The preliminary qualitative study with seven participants shows that users were able to control the game using both methods but required more training and feedback for the humming control. The revised interface, which implemented these requirements, was positively responded by users. The quantitative test with 12 other participants shows that humming excelled in both time and accuracy, especially over longer distances and advanced difficulty levels.

Non-speech Operated Emulation of Keyboard

  • Autoři: Sporka, A., Kurniawan, S.H., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Designing Accessible Technology. London: Springer, 2006. p. 145-154. ISBN 1-84628-364-7.
  • Rok: 2006
  • Pracoviště: Katedra počítačů
  • Anotace:
    The paper describes a user study of three methods of text entry based on use of alphabets of non-speech acoustic gestures, the Morse code, pitch addressing of keys, and melodic pattern-to-key mapping. All methods yielded approximate type rate of 16 characters per minute.

Problems of Graphical User Interfaces in Mobile Environment

  • Pracoviště: Katedra počítačů
  • Anotace:
    The paper deals with the problem of graphical user interfaces in mobile environment. Especially questions regarding comfortable graphical interaction in this environment were investigated. A number of practical examples have been shown (how to cope with this problem).

Towards Visual Analysis of Usability Test Logs Using Task Models

  • DOI: 10.1007/978-3-540-70816-2_3
  • Odkaz: https://doi.org/10.1007/978-3-540-70816-2_3
  • Pracoviště: Katedra počítačů
  • Anotace:
    In this paper we discuss techniques on how task models can enhance visualization of the usability test log. Evaluation of the usability tests is a traditional method in user centered design. It is a part of the methodology for design of usable products. We developed a tool for visualization of usability logs that uses the hierarchical structure of the task models to group and visualize observers' annotations.

Acoustic control of mouse pointer

  • Autoři: Sporka, A., Kurniawan, S.H., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Universal Access in the Information Society, Online First. 2005, 4(n/a), n/a. ISSN 1615-5297.
  • Rok: 2005
  • DOI: 10.1007/s10209-005-0010-z
  • Odkaz: https://doi.org/10.1007/s10209-005-0010-z
  • Pracoviště: Katedra počítačů
  • Anotace:
    This paper describes the design and implementation of a system for controlling mouse pointer using non-verbal sounds such as whistling and humming. Two control modes have been implemented-an orthogonal mode (where the pointer moves with variable speed either horizontally or vertically at any one time) and a melodic mode (where the pointer moves with fixed speed in any direction). A preliminary user study with four users indicates that the orthogonal control was easier to operate and that the humming was less tiring for the users than whistling. The developed system may contribute as an inexpensive, alternative pointing device for people with motor disabilities.

Collaborative Work with Adapted Data

  • Pracoviště: Katedra počítačů
  • Anotace:
    The paper deals with problem of the work with shared data in mobile environment

Domain Ontology Driven Adaptation of Graphical Information

  • Pracoviště: Katedra počítačů
  • Anotace:
    The paper deals with problem of adaptation of graphical information in mobile environment. The main contribution of the paper is in the use of domain ontologies by means of which the adaptation process is controlled.

Mobile Collaborative Application Architecture

  • Pracoviště: Katedra počítačů
  • Anotace:
    The paper deals with the design of architecture of mobile collaborative systems.

Non-verbal Acoustic Control of Mouse Cursor (U3I): A Usability Study with the Elderly

  • Autoři: Sporka, A., Kurniawan, S.H., Mahmud, M., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: HCI International 2005. Mahwah, New Jersey: Lawrence Erlbaum Associates, Publishers, 2005. ISBN 0-8058-5807-5.
  • Rok: 2005
  • Pracoviště: Katedra počítačů
  • Anotace:
    This paper describes the design, implementation and user evaluation of a system that can help elderly users control a mouse cursor using humming, hissing or whistling. This system is an improved version of the system reported in previous study. As a base evaluation, the participants tested the old system and then the new system. All participants reported that the new system was easier to use and more intuitive. Preliminary objective measures also indicate that the new system has higher completion rate and user satisfaction. The most successful input method was humming.

Object Based Manipulation with 3D Scenes in Mobile Computing Environment

  • Pracoviště: Katedra počítačů
  • Anotace:
    The paper deals with problem of efficient rendering of 3D scenes in mobile computing environment. Also interaction issues have been investigated.

On design and user evaluation of a spatial audio rendering system for blind users

  • Autoři: Kurniawan, S.H., Sporka, A., Němec, V., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: International Journal of Disability, Development and Education. 2005, 4(4), 317-324. ISSN 1034-912X.
  • Rok: 2005

Ontology Driven Voice-Based Interaction in Mobile Environment

  • Pracoviště: Katedra počítačů
  • Anotace:
    The paper deals with problems of man-machine communication by means of voice. A novel approach based on the use of ontologies (giving information about the user context) has been designed and implemented.

Real-time Data Acquisition and Visualization Framework for Monitoring of Dynamic Systems

  • Autoři: Řehoř, D., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Proceedings, International CODATA Symposium on Generalization of Information. Paris: CODATA - International Council for Science, 2005, pp. 119-130. ISBN 3-00-016253-4.
  • Rok: 2005
  • Pracoviště: Katedra počítačů
  • Anotace:
    The paper deals with the problem of visualization of the dynamic systems. Also the problems of data acquisition in real time has been discussed.

Speech-Based User Interface for Users with Special Needs

  • Autoři: prof. Ing. Pavel Slavík, CSc., Němec, V., Sporka, A.
  • Publikace: Text, Speech and Dialogue: 8th International Conference, TSD 2005. Berlin: Springer-Verlag, 2005. p. 45-55. ISSN 0302-9743. ISBN 3-540-28789-2.
  • Rok: 2005
  • Pracoviště: Katedra počítačů
  • Anotace:
    The number of people using computers is permanently increasing in last years. Not all potential users have all capabilities that allow them to use computers without obstacles. This is especially true for handicapped and elderly users. For this class of users a special approach for design and implementation of user interfaces is needed. The missing capabilities of these users must be substituted by capabilities that these users have. In most of cases the use of sounds and speech offers a natural solution to this problem. In the paper the outline of problems related to special user interfaces will be discussed. In further the examples of application of user interfaces using special forms of speech and related acoustic communication will be given.

Speech-Based User Interface for Users with Special Needs

  • Autoři: prof. Ing. Pavel Slavík, CSc., Němec, V., Sporka, A.
  • Publikace: Text, Speech and Dialogue: 8th International Conference, TSD 2005. Berlin: Springer-Verlag, 2005. pp. 45-55. ISSN 0302-9743. ISBN 3-540-28789-2.
  • Rok: 2005
  • Pracoviště: Katedra počítačů
  • Anotace:
    The number of people using computers is permanently increasing in last years. Not all potential users have all capabilities that allow them to use computers without obstacles. This is especially true for handicapped and elderly users. For this class of users a special approach for design and implementation of user interfaces is needed. The missing capabilities of these users must be substituted by capabilities that these users have. In most of cases the use of sounds and speech offers a natural solution to this problem. In the paper the outline of problems related to special user interfaces will be discussed. In further the examples of application of user interfaces using special forms of speech and related acoustic communication will be given.

Study of Expenses Jointed with Long Term Preservation of Digital Documents

  • Pracoviště: Katedra elektrotechnologie, Katedra počítačů
  • Anotace:
    Influence of long-time archiving of digital documents were examined with respect to their readibility. Expences joined with idividual types of archiving of these documents were analysed including problems joined with archiving. Possible solution were investigated.

Tangible Newspaper for the Visually Impaired Users

  • Autoři: Sporka, A., Němec, V., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Proceedings of CHI 2005. New York: ACM Press, 2005. p. 1809-1812. ISBN 1-59593-083-3.
  • Rok: 2005
  • Pracoviště: Katedra počítačů
  • Anotace:
    This paper outlines a novel interaction technique allowing the visually impaired users to examine the layout of complex paper documents (e.g. a newspaper page). The document is placed on a desk in the view of a camera placed above it. The tip of user's index finger is tracked by means of algorithms of computer vision. As the user moves the finger over the document, the layout of its logical units (articles) is revealed by means of a simple sonification of their boundaries and the speech synthesis. In the paper, implementation of the test application is described and evaluated. The main advantage of our system is the direct mapping of the kinaesthetic experience to the layout of the physical document, enabling the user to employ any strategy to traverse the document. The prototype has been mplemented using the ARToolKit library.

The Naturalness of Reproduced High Dynamic Range Images

  • Autoři: Čadík, M., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Proceedings of the Ninth International Conference on Information Visualisation. Los Alamitos: IEEE Computer Society, 2005. p. 920-925. ISBN 0-7695-2397-8.
  • Rok: 2005
  • DOI: 10.1109/IV.2005.126
  • Odkaz: https://doi.org/10.1109/IV.2005.126
  • Pracoviště: Katedra počítačů
  • Anotace:
    The field of tone mapping assumes thorough knowledge of both the objective and subjective attributes of an image. We present an overview of image attributes which are used extensively in different tone mapping methods. Furthermore, we propose a scheme of relationships between these attributes, leading to the definition of an overall quality measure which we call naturalness. We present results of the subjective psychophysical testing that we have performed to prove the proposed relationship scheme.

Vector Graphics Annotation in Mobile Environment

  • Pracoviště: Katedra počítačů
  • Anotace:
    The paper deals with problem of annotation of complex graphical information in mobile environment. The graphical format used is SVG

Virtual Reality, Multimedia and User Interfaces at Czech Technical University in Prague

  • Autoři: prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Central European Multimedia and Virtual Reality Conference. Praha: České vysoké učení technické v Praze, 2005. pp. 81-87. ISBN 80-01-03232-9.
  • Rok: 2005
  • Pracoviště: Katedra počítačů
  • Anotace:
    The paper describes history and present state in the research in the field of virtual reality, multimedia and user interfaces at CTU.

Visual Analysis of Bahaviour of Agents

  • Autoři: Řehoř, D., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: HCI International 2005. Mahwah, New Jersey: Lawrence Erlbaum Associates, Publishers, 2005. ISBN 0-8058-5807-5.
  • Rok: 2005
  • Pracoviště: Katedra počítačů
  • Anotace:
    The paper deals with the problem of visualization of dynamical behavior of agents in various environments.

Visualization of Meta-Reasoning in Multi-Agent Systems

  • Autoři: Řehoř, D., Tožička, J., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Adaptive and Natural Computing Algoritms - Proceedings of the International Conference in Coimbra. Wien: Springer, 2005. pp. 385-388. ISBN 3-211-24934-6.
  • Rok: 2005
  • Pracoviště: Katedra počítačů
  • Anotace:
    This paper describes the advances of our research on visualization of multi-agent systems (MAS) for purposes of analysis, monitoring and debugging. MAS are getting more complex and widely used, such analysis tools are highly beneficial in order to achieve better understanding of agent behaviour. Our solution is based on our originally offline visualization tools suite, which now uses a new realtime data acquisition framework. In this case we have focused on agent meta-reasoning in a MAS for planning of humanitarian relief operations. Previous tools were unable to deal with complex characteristics of these simulations, thus we have made some progress to present maximum of important information for realtime monitoring. This paper describes this progress, declares conditions and proposes visualization methods.

A Formal Approach to The Development of Web Based Multimedia Presentations

A Method to Define a Search Query by Speech

  • Autoři: Žikovský, P., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: User Interfaces for All - Workshop Adjunct Proceedings. Paris: ERCIM, 2004,
  • Rok: 2004

Adaptation of Graphical Data in Collaborative Environment

  • Pracoviště: Katedra počítačů
  • Anotace:
    The paper deals with problem of adaptation of graphical data in mobile environment. The special topic investigated is collaborative work in this environment when sharing common graphical data.

Authoring of Multimedia Presentations in Web Environment

  • Pracoviště: Katedra počítačů
  • Anotace:
    The paper describes the development of a framework for uniform handling of multimedia documents.

Comparing Image Processing Operators by Means of the Visible Differences Predictor

  • Autoři: Čadík, M., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: WSCG POSTER Proceedings. Plzeň: UNION Agency - Science Press, 2004, pp. 37-40. ISBN 80-903100-6-0.
  • Rok: 2004
  • Pracoviště: Katedra počítačů
  • Anotace:
    Utilization of non-photorealistic techniques (NPR) is beneficial in many cases, in comparison with the use of traditional rendering methods in computer graphics. The observer's sensation is often straighter, clearer, or even more valuable. There exists plenty of various NPR techniques in computer graphics, however application of one technique to the specific problem is not necessarily as providential as usage of another one. There arises a strong need to classify NPR techniques with respect to their applicability, to find a mechanism able to compare NPR techniques automatically. The search for such a mechanism will be a long term goal. We present our first steps towards the solution to this problem - the comparison of 2D-based NPR techniques using Daly's Visible Differences Predictor (VDP). Results from our experiments are reported and will be used to improve communication in graphical user interfaces.

Data Visualization Using Hardware Accelerated Spline Interpolation

  • Autoři: Kadlec, P., Gayer, M., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: WSCG'2004. Plzeň: UNION Agency - Science Press, 2004, pp. 117-123. ISBN 80-903100-5-2.
  • Rok: 2004

Design and Evaluation of Computer-Simulated Spatial

  • Autoři: Kurniawan, S.H., Sporka, A., Němec, V., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Proceedings of the 2nd Cambridge Workshop on Universal Access and Assistive Technology. Cambridge: University of Cambridge Press, 2004, pp. 137-146. ISSN 0963-5432.
  • Rok: 2004
  • Pracoviště: Katedra počítačů
  • Anotace:
    Conventional O&M training involves instructing a blind trainee to approach a wall or bring a small obstacle near to the trainee's face to show the sound variation caused by presence of object (known as the obstacle perception training) or to bring trainees to various environments to train them to detect the sound variation caused by various factors, e.g., the floor textures, the room size, the location of the closest obstacle, etc. (Seki and Ito, 2003).

Design and User Evaluation of a Spatial Audio System for Blind Users

  • Autoři: Kurniawan, S.H., Sporka, A., Němec, V., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: International Conference Series on Disability, Virtual Reality and Associated Technologies. Reading: University of Reading, 2004, pp. 175-181. ISBN 0-70491-144-2. Available from: http://www.icdvrat.reading.ac.uk/
  • Rok: 2004
  • Pracoviště: Katedra počítačů
  • Anotace:
    The paper reports on the design and evaluation of a spatial audio system that models the acoustic response of a closed environment with varying sizes and textures. To test the fit of the algorithms used, the system was evaluated by nine blind computer users in a controlled experiment using seven distinct sounds in three environments. The statistical analysis reveals that there was insignificant difference in user perception of room sizes between sounds in real and simulated scenes. This system can contribute to the area of VR systems used for training blind people to navigate in real environments.

Digital archiving of scientific information: Czech experience

Dynamic Analysis of Agents' Behaviour - Combining ALife, Visualization and AI

Estimating the 'Mental Image' for Comprehensible Rendering of 3D Objects

  • Autoři: Ženka, R., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Eighth International Conference on Information Visualisation. Los Alamitos: IEEE Computer Society Press, 2004, pp. 555-560. ISSN 1093-9547. ISBN 0-7695-2177-0.
  • Rok: 2004

Evaluation of Two Principal Approaches to Objective Image Quality Assessment

  • Autoři: Čadík, M., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Eighth International Conference on Information Visualisation. Los Alamitos: IEEE Computer Society Press, 2004. p. 513-518. ISSN 1093-9547. ISBN 0-7695-2177-0.
  • Rok: 2004
  • Pracoviště: Katedra počítačů
  • Anotace:
    Image quality assessment is traditionally approached by perceptual models of HVS. Recently, a new assessment methodology based on structural similarity has been proposed. In this paper we select two representative models of each group for evaluation and we discuss the performance, similarities and the differences between the two models.

GUI Generation from Annotated Source Code

  • Autoři: Jelínek, J., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: 3rd International Workshop on TAsk MOdels and DIAgrams for User Interface Design - TAMODIA 2004. New York: ACM, 2004, pp. 129-136. ISBN 1-59593-000-0.
  • Rok: 2004
  • Pracoviště: Katedra počítačů
  • Anotace:
    We present a way to define a user interface on an abstract level without explicit definion of the user interface module while keeping it transparent, thus reducing the work required to make functional application protypes. Our approach is based on derivation of a user interface module directly from an application source code enriched by abstract commands of user interaction to control the generation of the user interface.

Haptic and Spatial Audio Based Navigation of Visually Impaired Users in Virtual Environment Using Low Cost Devices

  • Autoři: Němec, V., Sporka, A., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: User-Centred Interaction Paradigms for Universal Access in the Information Society. Berlin: Springer, 2004. p. 452-459. ISSN 0302-9743. ISBN 3-540-23375-X.
  • Rok: 2004
  • Pracoviště: Katedra počítačů
  • Anotace:
    The use of haptic peripherials to mediate spatial information to visually impaired users is a problem which has recently been examined thoroughly. We have focused on using low-cost haptic devices to allow visually impaired users to navigate in and inspect a virtual environment.

Hierarchical Trees of Unsteady Simulation Datasets

  • Autoři: Gayer, M., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Proceedings of the IASTED International Conference on Applied Simulation and Modelling. Calgary: IASTED, 2004. pp. 303-308. ISSN 1021-8181. ISBN 0-88986-401-2.
  • Rok: 2004

Long-Time Preservation of Digital Documents: Basic Characteristic and Problems

Multimodal Interface for Data Retrieval during Conversation

  • Autoři: Ženka, R., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Proceedings for the 19th International CODATA Conference - The Information Society: New Horizons for Science. Paris: CODATA - International Council for Science, 2004. p. 1-6.
  • Rok: 2004
  • Pracoviště: Katedra počítačů
  • Anotace:
    The paper deals with problems of interactive data retrieval during conversation between man and machine.

New Methodology for Design of Moving Bed Filters

  • Autoři: Hrdlička, F., prof. Ing. Pavel Slavík, CSc., Kubelka, O., Härtel, P.
  • Publikace: WIT Transactions on Ecology and the Environment. 2004, 2004(78), 57-65. ISSN 1743-3541.
  • Rok: 2004

Non-Photorealistic Walkthroughs Using Flash

  • Autoři: Ženka, R., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: WSCG POSTER Proceedings. Plzeň: UNION Agency - Science Press, 2004, pp. 201-204. ISBN 80-903100-6-0.
  • Rok: 2004

Processing of Logical Expressions for Visually Impaired Users

  • Autoři: Žikovský, P., Pešina, T., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Text, Speech and Dialogue, 7th International Conference TSD 2004. Berlin: Springer, 2004, pp. 553-560. ISSN 0302-9743. ISBN 3-540-23049-1. Available from: http://nlp.fi.muni.cz/tsd2004/
  • Rok: 2004
  • Pracoviště: Katedra počítačů
  • Anotace:
    Although there are many voice systems that can act as user interfaces for visually impaired people, there is still a problem with explaining more complicated structures to these users (such as mathematical equations, logical proofs, chemical formulas etc.) through speech. The output of such an interface is then reduced to a text reader. The problem is that we have lost (graphic) information about the structure, which is 2-dimensional. Within this paper we will describe a solution to this problem. We will concentrate on the structure of expressions and on reading logical proofs. We will present a preliminary design for a new markup language to describe the structure of logical proof and a method of how to present it to users by using speech efficiently.

Rendering The Acoustic Response of Virtual Scene

Semantic Driven Visualization

Semantic information visualization

  • Pracoviště: Katedra počítačů
  • Anotace:
    We have designed and implemented a graphical tool for visualization and manipulation with semantic metadata for the use of data adaptation in the mobile environment. The tool is capable of visualizing of both the 3D (2D) data and the semantic graphs. The semantics and geometrical information are interconnected so the manipulation with one is immediately propagated to the other. The interactivity and appropriate visualization greatly help the user to create or modify complex semantic descriptions.

Standardization in Digital Archiving

Supporting UI Design by Sketch and Speech Recognition

  • Autoři: Ženka, R., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: 3rd International Workshop on TAsk MOdels and DIAgrams for User Interface Design - TAMODIA 2004. New York: ACM, 2004, pp. 83-90. ISBN 1-59593-000-0.
  • Rok: 2004

Visualization and Navigation

  • Autoři: prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Prague CODATA Information Visualization Workshop. Praha: České vysoké učení technické v Praze, 2004, pp. 45-53.
  • Rok: 2004

Visualization of Biological and Social Systems

Visualization of Dynamic Behaviour of Multi-Agent Systems

  • Pracoviště: Katedra kybernetiky, Katedra počítačů
  • Anotace:
    The extension of our research on analysis of a single agent or agent communities combining advanced methods of visualization with traditional AI techniques is presented in this paper. Even though this approach can be used for arbitrary Multi-Agent System (MAS), it was primarily developed to analyze systems falling into Artificial Life domain. Traditional methods are becoming insufficient as Multi-Agent Systems (MAS) are becoming more complex and therefore novel approaches are needed. In this paper we present an extension of our recent visualization tools suite. The previous approach was not suitable well to present the dynamics of the MAS, even though the progression of MAS state parameters in time was presented. Our new technique, which is presented in this paper, addresses this problem by visualizing the changes of the MAS along with their quality and context. This transparent approach emphasizes MAS dynamics by providing means for discovery of changes in its tendencies or in behavi

VRI Exhibition

Whistling User Interface (U3I)

  • Autoři: Sporka, A., Kurniawan, S., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: User-Centred Interaction Paradigms for Universal Access in the Information Society. Berlin: Springer, 2004. p. 472-478. ISSN 0302-9743. ISBN 3-540-23375-X.
  • Rok: 2004
  • Pracoviště: Katedra počítačů
  • Anotace:
    The paper describes the design, implementation and user evaluation of a system that allows a user to control a mouse pointer through whistling or humming.

XML Visualization Using Tree Rewriting

  • Autoři: Jelínek, J., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Spring Conference on Computer Graphics SCCG 2004 - Conference Proceedings. New York: ACM SIGGRAPH, 2004, pp. 65-72. ISBN 1-58113-914-4.
  • Rok: 2004

A Structured Approach to the Interaction in 3D

A Universal Approach to Multimodal User Interfaces

  • Pracoviště: Katedra počítačů
  • Anotace:
    Using one application in various environments brings up the need ofmultiple modality user-interfaces.

Adaptive Navigation of Visually Impaired Users in a Virtual Environment on the World Wide Web

  • Autoři: Němec, V., doc. Ing. Zdeněk Míkovec, Ph.D., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Universal Access Theoretical Perspectives, Practice, and Experience. 7th ERCIM International Workshop on User Interfaces for All, Paris, France, October 24-25, 2002, Revised Papers. Heidelberg: Springer, 2003. p. 68-79. Lecture Notes in Computer Science. ISSN 0302-9743. ISBN 978-3-540-36572-3.
  • Rok: 2003
  • Pracoviště: Katedra počítačů
  • Anotace:
    The increasing amount of new technologies allows us to use new approaches in design and implementation of applications of various kinds. One such example might be the use of 3D information in the web environment (and navigation in such an environment) by visually impaired users. Our solution provides semantic and functional description of the scene objects and inter-object relations in addition to "standard" geometric scene description. This approach permits the user to query for various information in the virtual environment (e.g. searching for a path to a specific object, searching for an object with specific properties and particularly filtering scene information). The system should allow the visually impaired user to virtually walk through the scene and query for information about the objects in a scene. The user interface itself provides the feedback in accordance with the user's group's specific requirements (screen reader, Braille display etc.).

Advanced Methods of Search Query Refinement in Web Environment

  • Autoři: Žikovský, P., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Human-Computer Interaction: Theory and Practice (Part II). Mahwah, New Jersey: Lawrence Erlbaum Associates, Publishers, 2003, pp. 1054-1058. ISBN 0-8058-4931-9.
  • Rok: 2003

Analysis of Virtual Agent Communities by Means of AI Techniques and Visualization

  • Pracoviště: Katedra kybernetiky, Katedra počítačů
  • Anotace:
    Článek popisuje analýzu virtuálních agentích společenství, kombinujíc vyspělé metody vizualizace s tradičními technikami UI. To umožňuje mnohem průhlednější vyhodnocení než současnými metodami. Vyvinuli jsme off-line vizualizační nástroj pro analýzu- (VAT). Cílem je zobrazit - vizualizovat chování jednotlivých agentů a analyzovat posléze jeho příčinu.

Cultural Heritage Presentation in Virtual Environment: Czech Experience

  • DOI: 10.1109/DEXA.2003.1232004
  • Odkaz: https://doi.org/10.1109/DEXA.2003.1232004
  • Pracoviště: Katedra počítačů
  • Anotace:
    This paper introduces three different approaches to cultural heritage modeling and presentation in the Czech Republic. The first example, Celtic oppidum Závist, represents a simple but efficient utilization of the virtual reality for the archaeology. Next project, the Virtual Old Prague, is a complex web-based application allowing dynamic walks through virtual cities. Such models can be theoretically of any size. Finally, the on-going EU project, Virtual Heart of Central Europe, is an example of several cultural heritage sites thematically interconnected

Declarative Way of Filtering of Graphical Data in Mobile Computing

Dynamic Analysis of Agents' Behaviour - Combining ALife, Visualization and AI

Dynamic Analysis of ALife Systems Using Visualization and AI Techniques

  • Pracoviště: Katedra kybernetiky, Katedra počítačů
  • Anotace:
    Článek popisuje analýzu virtuálních agentích společenství, kombinujíc vyspělé metody vizualizace s tradičními technikami UI. To umožňuje mnohem průhlednější vyhodnocení než současnými metodami. Vyvinuli jsme off-line vizualizační nástroj pro analýzu- (VAT). Cílem je zobrazit - vizualizovat chování jednotlivých agentů a analyzovat posléze jeho příčinu. Tyto metody mohou být použity v mobilní robotice, umělém životě, evolučních systémech, virtuálních akcích, medicíně a v obecných řídících procesech.

Exact Regional Visibility Using Line Space Partitioning

  • DOI: 10.1016/S0097-8493(03)00101-8
  • Odkaz: https://doi.org/10.1016/S0097-8493(03)00101-8
  • Pracoviště: Katedra počítačů
  • Anotace:
    We present a new method for computing visibility from a polygonal region in the plane considering a set of line segments as occluders. The proposed method provides a comprehensive description of visibility from the given region. We represent sets of occluded rays using a hierarchical partitioning of dual space (line space). The line space partitioning is maintained by a BSP tree that provides efficient operations on the sets of lines. The implementation shows that the method is suitable for computing potentially visible sets in large scenes with various visibility characteristics.

Experimental System for Visualisation of the Light Load

  • Autoři: Čadík, M., prof. Ing. Pavel Slavík, CSc., Přikryl, J.
  • Publikace: WSCG 2003 - Posters. Pilsen: University of West Bohemia, 2003, pp. 37-40. ISBN 80-903100-2-8.
  • Rok: 2003
  • Pracoviště: Katedra počítačů
  • Anotace:
    This paper presents experimental system for simulation and visualisation of the light interactions in outdoor scenes. The simulation is obtained by the hierarchical Monte Carlo radiosity method that was extended to handle parallel light sources, specular reflections, skylight etc.

HCI Education in the Czech Republic

  • Autoři: Matoušek, V., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Human-Computer Interaction INTERACT '03. Amsterdam: IOS Press, 2003, pp. 1067-1068. ISBN 1-58603-363-8.
  • Rok: 2003

HCI Research in the Czech Republic

  • Autoři: Matoušek, V., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Human-Computer Interaction INTERACT '03. Amsterdam: IOS Press, 2003, pp. 1085-1086. ISBN 1-58603-363-8.
  • Rok: 2003

Human-Computer Communication in Special Environments

  • Pracoviště: Katedra počítačů
  • Anotace:
    The problems of human-computer communication (HCC) that arise with introduction of user groups with special requirements are discussed. We analyze new approaches that increase the quality of HCC in the environment of disabled users or user utilizing mobile devices. In both cases the problem of adaptation of the interactive system (which communicates with the user) to dynamically and very strongly changing context of use (end-device features, environment, user tasks, user capabilities, etc.) are addressed. We have analyzed existing solutions. The insufficiency of these solutions in the field of adaptation of system data (the data manipulated by the user using the user interface of an interactive system) was identified.

Interaction of Visually Impaired Users in Virtual Environment with Spatial Sound Enhancement

  • Autoři: Němec, V., Sporka, A., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Universal Access in HCI: Inclusive Design in the Information Society. Mahwah, New Jersey: Lawrence Erlbaum Associates, Publishers, 2003, pp. 1310-1314. ISBN 0-8058-4933-5.
  • Rok: 2003

Interactive Creation and Retrieval of Graphical Information by Visually Impaired Users

Interactive Educational System for Coal Combustion Modeling in Power Plant Boilers

  • Autoři: Gayer, M., prof. Ing. Pavel Slavík, CSc., Hrdlička, F.
  • Publikace: EUROCON 2003 - Computer As a Tool - Proceedings. Los Alamitos: IEEE Computer Society Press, 2003, pp. 220-224. ISBN 0-7803-7763-X.
  • Rok: 2003

Mobile Data Sharing and Collaboration

  • Pracoviště: Katedra počítačů
  • Anotace:
    Problems of data retrieval and collaborative work in mobile environment are introduced. System architecture of a system solving these problems is introduced and described. A short analysis of the system requirements and possible architecture is given and a result solution (with respect to the use case) is introduced. Finally technique of optimizing the network traffic using a message queue reduction is described.

Mobile Multimedia Collaboration and Annotation within the EU Project MUMMY

Multimodal Interaction and Access to Complex Data

  • Autoři: Němec, V., Žikovský, P., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Proceedings of the IADIS International Conference WWW/Internet 2003. Lisboa: IADIS Press, 2003, pp. 767-770. ISBN 972-98947-1-X.
  • Rok: 2003

New Dimension for Sketches

  • Autoři: Ženka, R., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Proceedings - Spring Conference on Computer Graphics 2003. New York: ACM SIGGRAPH, 2003. p. 157-163. ISBN 9781581138610.
  • Rok: 2003
  • DOI: 10.1145/984952.984978
  • Odkaz: https://doi.org/10.1145/984952.984978
  • Pracoviště: Katedra počítačové grafiky a interakce
  • Anotace:
    We propose a method for creating 'smart' sketches of freeform 3D objects. A 2D sketch of an object drawn by the user is enriched with information about its 3D structure. With the help of our system, the user can rotate the created sketch of the object and view it from various angles. Since most of the user input is a traditional 2D sketch, the system is very easy to use and doesn't limit the user's creativity. Our approach closely simulates the way 3D objects are drawn by artists. The user first models by sketching a simple 3D skeleton of the desired object. A more detailed sketch of the object is drawn in 2D over the skeleton. The skeleton helps the user to maintain correct proportions while drawing. Using the 3D skeleton, the system helps the user rotate the sketch. This way a hybrid model of an object is created - although being essentially 2D, the model can be rotated smoothly and viewed from various angle

New Dimension for Sketches

  • Autoři: Ženka, R., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Proceedings - Spring Conference on Computer Graphics 2003. Bratislava: Comenius University, 2003, pp. 173-179. ISBN 80-223-1837-X.
  • Rok: 2003
  • Pracoviště: Katedra počítačů
  • Anotace:
    Nástroj pro rychlé modelování pomocí rozhraní založeného na skicování.

Panorama Sketching for PDAs

  • Autoři: Ženka, R., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Proceedings of the 4th International Workshop on Mobile Computing IMC2003. Stuttgart: IRB Verlag, 2003, pp. 1-8. ISBN 3-8167-6319-7.
  • Rok: 2003
  • Pracoviště: Katedra počítačů
  • Anotace:
    Metoda která umožní používat PDA jako jednoduchý 3D skicák, pomocí panoramatických obrázků.

Pre-Calculated Fluid Simulator States Tree

  • Autoři: Gayer, M., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Twelfth IASTED International Conference on Applied Simulation and Modelling. Anaheim: Acta Press, 2003, pp. 610-615. ISSN 1021-8181. ISBN 0-88986-384-9.
  • Rok: 2003

Problems of Visualization of Technological Processes

  • Autoři: prof. Ing. Pavel Slavík, CSc., Gayer, M., Hrdlička, F., Kubelka, O.
  • Publikace: Proceedings of the 2003 Winter Simulation Conference. Norfolk, VA: Omnipress, 2003, pp. 746-754. ISBN 0-7803-8132-7.
  • Rok: 2003
  • Pracoviště: Katedra počítačů
  • Anotace:
    Specific problems of visualization of dynamic processes were considered.

Real-time Simulation and Visualization using Pre-Calculated Fluid Simulator States

  • Autoři: Gayer, M., prof. Ing. Pavel Slavík, CSc., Hrdlička, F.
  • Publikace: Seventh International Conference on Information Visualization. Los Alamitos: IEEE Computer Society Press, 2003, pp. 440-445. ISSN 1093-9547. ISBN 0-7695-1988-1.
  • Rok: 2003
  • Pracoviště: Katedra počítačů
  • Anotace:
    We have incorporated this concept to real-time simulation and visualization system of combustion processes in pulverized coal boilers. The system is based on a simple fluid simulator and a coal particle system. We compared features between classical approach of storing data sets and saving the output of visualization to common movie files formats. Furthermore, we have performed measurements of overall acceleration and disk space requirements. The disk space requirements are in orders less demanding than the ones needed for saving corresponding data sets. This allows better scalability and storing and replaying results of complex tasks with large grids and/or ten thousands ofparticles.

Scaleable GIS Data Transmission and Visualisation

  • Autoři: Komzák, J., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Seventh International Conference on Information Visualization. Los Alamitos: IEEE Computer Society Press, 2003, pp. 230-236. ISSN 1093-9547. ISBN 0-7695-1988-1.
  • Rok: 2003
  • Pracoviště: Katedra počítačů
  • Anotace:
    Distributed geographic information systems typically handle large amounts of data; therefore the transmission and visualisation techniques used need to be scaleable to provide quick, interactive feedback. In this paper, we introduce such techniques based on the data hierarchy (levels of detail). Namely, we describe focus-and-context visualisation and progressive transmission. The main aim of this paper is to discuss the combination of these techniques for different data types and for mixture of these data types.

Towards Multimodal Context-Awareness User Interfaces

  • Autoři: Žikovský, P., Němec, V., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Proceedings of the IADIS International Conference WWW/Internet 2003. Lisboa: IADIS Press, 2003, pp. 736-739. ISBN 972-98947-1-X.
  • Rok: 2003

Transparent visualisation of multi-agent systems

  • Pracoviště: Katedra kybernetiky, Katedra počítačů
  • Anotace:
    Článek popisuje náš výzkum nových přístupů při analýze Multi-agentních systémů pomocí vizualizace. To umožňuje mnohem průhlednější vyhodnocení než současnými metodami.Vyvinuli jsme off-line vizualizační nástroj pro analýzu- (VAT). Cílem je zobrazit - vizualizovat chování jednotlivých agentů a analyzovat posléze jeho příčinu.

VAT - a New Approach to Multi-agent Systems Visualization

  • Pracoviště: Katedra kybernetiky, Katedra počítačů
  • Anotace:
    Článek popisuje analýzu virtuálních agentích společenství, kombinujíc vyspělé metody vizualizace s tradičními technikami UI. To umožňuje mnohem průhlednější vyhodnocení než současnými metodami. Vyvinuli jsme off-line vizualizační nástroj pro analýzu- (VAT). Cílem je zobrazit - vizualizovat chování jednotlivých agentů a analyzovat posléze jeho příčinu. Tyto metody jsou výhodné v aplikacích, v mobilní robotice a umělém životě.

Adaptive Navigation of Visually Impaired Users in Virtual Environment on the World Wide Web

  • Pracoviště: Katedra počítačů
  • Anotace:
    The increasing amount of new technologies (including multimedia, internet and virtual reality) allows us to use new approaches in design and implementation of applications of various kinds. Specific requirements emerge in the case of users with specific needs. One such example might be the use of 3D information in the web environment (and navigation in such an environment) by visually impaired users. Our solution provides semantic and functional description of the scene objects and inter-object relations in addition to "standard" geometric scene description. This approach permits the user to query for various information in the virtual environment (e.g. searching for a path to a specific object, searching for an object with specific properties and particularly filtering scene information).

Architecture of System for Configurable GIS Data Compression

  • Autoři: Komzák, J., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: WSCG '2002 Posters. Plzeň: Západočeská universita, 2002, pp. 25-28. ISBN 80-903100-0-1.
  • Rok: 2002

Architecture of System for Configurable GIS Data Compression

  • Autoři: Komzák, J., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Journal of WSCG'2002. Plzeň: Západočeská universita, 2002. pp. 25-28. ISSN 1213-6980.
  • Rok: 2002
  • Pracoviště: Katedra počítačů
  • Anotace:
    The paper deals with formal description of data transformation (compression and decompression process). An adaptive compression tool for different data types (both raster and vector), that is based on finite automata, is introduced. When using distributed geographic information system (GIS), data of different types has to be transmitted. The introduced tool enables flexible changes of compression method and selective loss control during compression process. Finite automata are discussed for several dictionary and other string-based compression methods. Application of one dimensional compression methods in the field of computer graphics is discussed.

Archivování dat a digitální archiv

Computational Model for Efficient Filter Design

  • Autoři: Hrdlička, F., Kubelka, O., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: The Proceedings of the 27th International Technical Conference on Coal Utilization & Fuel Systems. Gaithersburg: Coal Technology Association, 2002, pp. 539-548. ISBN 0-932066-27-3.
  • Rok: 2002

Computer Graphics Students and Research Work

Development of Visual Learning Tools for Mechanical Engineering Education

  • Autoři: prof. Ing. Pavel Slavík, CSc., Hrdlička, F.
  • Publikace: Visual Learning in Science and Engineering. New York: ACM, 2002, pp. 16-17.
  • Rok: 2002

Dynamic Visualisation of the Combustion Processes in Boilers

Dynamic Visualisation of the Combustion Processes in Boilers

  • Autoři: Gayer, M., Hrdlička, F., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Journal of WSCG'2002. Plzeň: Západočeská universita, 2002, pp. 25-32. ISSN 1213-6980.
  • Rok: 2002

Fast Visualization of Plasma Filament

  • Autoři: Novák, O., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Technologie pro e-vzdělávání. Praha: ČVUT FEL, Katedra počítačů, 2002, pp. 115-125. ISBN 80-01-02538-1.
  • Rok: 2002

History of Computer Graphics in the Czech Republic

  • Autoři: prof. Ing. Pavel Slavík, CSc., Kolingerová, I.
  • Publikace: Journal of WSCG'2002. Plzeň: Západočeská universita, 2002, pp. i-v. ISSN 1213-6980.
  • Rok: 2002

History of Computer Graphics in the Czech Republic

Interactive Picture Information Creation and Retrieval for Blind Users

Interactive System for Pulverized Coal Combustion Visualization with Fluid Simulator

  • Autoři: Gayer, M., prof. Ing. Pavel Slavík, CSc., Hrdlička, F.
  • Publikace: Proceedings of the 2nd IASTED International Conference: Visualization, Imaging, and Image Processing. Anaheim: Acta Press, 2002, pp. 288-293. ISSN 1482-7921. ISBN 0-88986-354-3.
  • Rok: 2002

Manipulation of Complex 2D/3D Scenes on Mobile Devices

Special Problems of Visualization in a Specific Environment

System for Reconstruction of Celtic Archaeological Sites

  • Autoři: prof. Ing. Pavel Slavík, CSc., Poláček, M., Chludil, J.
  • Publikace: Spring Conference on Computer Graphics SCCG 2002 - Conference Materials, Posters. Bratislava: Comenius University, 2002, pp. 58-59. ISSN 1335-5694.
  • Rok: 2002

Systems for Training Audio Perception

  • Autoři: Žikovský, P., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Proceedings of the 1st Cambridge Workshop on Universal Access and Assistive Technology. Cambridge: Cambridge University Press, 2002, pp. 133-137. ISSN 0963-5432.
  • Rok: 2002

Virtual Reconstruction of Celtic Oppidum Zavist Near Prague

  • Autoři: Křivánek, J., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Spring Conference on Computer Graphics SCCG 2002 - Conference Materials, Posters. Bratislava: Comenius University, 2002, pp. 56. ISSN 1335-5694. Available from: http://www.cgg.cvut.cz/~xkrivanj/projects/celts/zavist/index.htm
  • Rok: 2002
  • Pracoviště: Katedra počítačů
  • Anotace:
    This work presents a virtual reconstruction of the Celtic oppidum Zavist established in the first half of the 6th century B.C.

Virtuální elektrárna

  • Autoři: Žikovský, P., Hrdlička, F., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Technologie pro e-vzdělávání. Praha: ČVUT FEL, Katedra počítačů, 2002, pp. 111-114. ISBN 80-01-02538-1.
  • Rok: 2002

Visualization of Large Dynamic Graphs

  • Autoři: Novák, O., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Proceedings of Workshop 2002. Praha: České vysoké učení technické v Praze, 2002, pp. 256-257. ISBN 80-01-02511-X.
  • Rok: 2002

Authoring Tools for Support of Multi-Modal Interaction with 3D Scenes

Bimodal Voice/Video-Based Speech Interfaces

Cheap Production of Multimedia Programs

  • Autoři: prof. Ing. Pavel Slavík, CSc., Kulvejt, M., Hromas, D., Novák, J.
  • Publikace: Design and Management of Multimedia Information Systems: Opportunities and Challenges. Hershey: Idea Group Publishing, 2001. p. 336-344. ISBN 1-930708-00-9.
  • Rok: 2001

How New Local Chapters Work: The Experience of Czech SIGCHI

Image-Based Acquisition of Virtual Gallery Model

PDA Based Navigation System for a 3D Environment

  • Pracoviště: Katedra počítačů
  • Anotace:
    Navigation systems are an important application in the field of mobile computing. In order to increase the usability of navigation systems it is desirable to present information in a form that is most informative for the user. This paper deals with the possibility of presenting the information in a 3D form that provides the user with more information than information in a 2D form. A concept of such a navigation system is described together with all the partial problems that have to be solved. The result of the project is the implementation of a system that is fully functional and could be used in various applications. The structure of the system is very flexible, allowing the substitution or some software modules by hardware solutions. (C) 2001 Elsevier Science Ltd. All rights reserved.

PDA Based Navigation System for a 3D Environment

  • Autoři: Brachtl, M., Šlajs, J., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Intelligent Interactive Assistance and Mobile Multimedia Computing. Rostock: Neuer Hochschulschriftenverlag, 2001. pp. 122-129. ISBN 3-935319-75-4.
  • Rok: 2001
  • Pracoviště: Katedra počítačů
  • Anotace:
    Navigation systems are an important application in the field of mobile computing. In order to increase the usability of navigation systems it is desirable to present information in a form that is most informative for the user. This paper deals with the possibility of presenting the information in a 3D form that provides the user with more information than information in a 2D form. A concept of such a navigation system is described together with all the partial problems that have to be solved. The result of the project is the implementation of a system that is fully functional and could be used in various applications. The structure of the system is very flexible, allowing the substitution or some software modules by hardware solutions. (C) 2001 Elsevier Science Ltd. All rights reserved.

Simulation and Visualization of Processes in Moving Granular Bed Gas Cleanup Filter

Simulation and Visulation of Processes in Moving Granular Bed Gas Cleanup Filter

  • Pracoviště: Katedra počítačů
  • Anotace:
    Simulace a vizualizace čistícího procesu ve filtru se sesuvnou vrstvou.

Simulation of Adsorption Processes in Gas Cleanup Filters

  • Autoři: Hrdlička, F., prof. Ing. Pavel Slavík, CSc., Kubelka, O.
  • Publikace: Air Pollution IX. Boston: WIT Press, 2001, pp. 385-394. ISSN 1369-5886. ISBN 1-85312-877-5.
  • Rok: 2001

Tool for Pictorial Data Transformations

Visualization of Plasma Filament Behaviour

  • Autoři: Novák, O., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Spring Conference on Computer Graphics SCCG 2001. Bratislava: Univerzita Komenského, 2001, pp. 149-158. ISBN 80-223-1606-7.
  • Rok: 2001

Visualization of Plasma Filament Behaviour

  • Autoři: Novák, O., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Poster 2001. Praha: České vysoké učení technické v Praze, Fakulta elektrotechnická, 2001, pp. IC32.
  • Rok: 2001

Adaptable Speech-based Interfaces

  • Autoři: Žikovský, P., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: User Interfaces for All. Florence: Consiglio Nazionale delle Ricerche, 2000, pp. 350-351.
  • Rok: 2000

Architecture of Multi-modal Dialogue System

  • Autoři: Fuchs, M., Hejda, P., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Text, Speech and Dialogue. Berlin: Springer, 2000, pp. 433-438. ISBN 3-540-41042-2.
  • Rok: 2000

PDA Based Navigation System for 3D Environment

Simulation Model of the Moving Granular Bed Gas Cleanup Filter

  • Autoři: Hrdlička, F., prof. Ing. Pavel Slavík, CSc., Kubelka, O.
  • Publikace: Air Pollution VIII. Boston: WIT Press, 2000. pp. 573-582. ISBN 1-85312-822-8.
  • Rok: 2000

Simulation Model of the Moving Granular Bed Gas Cleanup Filter

  • Autoři: Hrdlička, F., prof. Ing. Pavel Slavík, CSc., Kubelka, O.
  • Publikace: AIR Pollution VII. Southampton: WIT Press, 2000. pp. 573-582. ISBN 1-85312-822-8.
  • Rok: 2000

Simulation of the Impact of Large Pollution Sources on the Environment

  • Autoři: Hrdlička, F., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: The 25th International Technical Conference on Coal Utilization and Fuel Systems. Rockville: CTA, 2000. pp. 527-538. ISBN 0-932066-25-1.
  • Rok: 2000

Simulation of the Impact of Large Pollution Sources on the Environment

  • Autoři: Hrdlička, F., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: The Proceedings of the 25th International Technical Conference on Coal Utilization and Fuel Systems. Washington, DC: Coal & Slurry Technology Association, 2000. pp. 527-537. ISBN 0-932066-25-1.
  • Rok: 2000
  • Pracoviště: Katedra počítačů
  • Anotace:
    Model znečištění sídelních celků z velkých energetických zdrojů v blízkém okolí.

System for 3D Visualization in Web Environment

  • Autoři: Kubec, M., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Spring Conference on Computer Graphics 2000, Conference Proceedings. Bratislava: Univerzita Komenského, 2000, pp. 123-128. ISBN 80-223-1486-2.
  • Rok: 2000

User Interface for Efficient Querying in Picture DBS

  • Pracoviště: Katedra počítačů
  • Anotace:
    Increasing complexity of queries on the one side and UI limitations of new technologies (e.g. handheld devices) on other enforce new flexible and dynamic querying methods development. Experimental system for testing UI for efficient querying in picture DBS was built. New approach applied. This approach, based on a richer (than MPEG-7) picture description defined in XML allows more efficient querying.

Virtual Information Systems

  • Autoři: Haindl, M., Kment, Š., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: WSCG'2000. Plzeň: Západočeská universita, 2000, pp. 22-27. ISBN 80-7082-612-6.
  • Rok: 2000

Visualization of Impulse Response of Virtual Acoustic Environments

  • Autoři: Sporka, A.J., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: WSCG'2000. Plzeň: Západočeská universita, 2000, pp. 330-336. ISBN 80-7082-612-6.
  • Rok: 2000

Web Images and Blind Users

Dynamic Models of the Lignite Transport in Dryer of Power Plant Boiler

  • Autoři: Hrdlička, F., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Proceedings of the 24th International Technical Conference on Coal Utilization and Fuel Systems. Washington, DC: CSTA, 1999. pp. 107-117. ISBN 0-932066-24-0.
  • Rok: 1999

Dynamické modely dopravy uhlí ve spalinových suškách

Dynamické modely dopravy ve spalinových suškách

  • Pracoviště: Katedra počítačů
  • Anotace:
    Simulační modely vyvinuté pro zlepšení geometrického řešení sušky s cílem zvýšit její životnost.

Mobile Computing in Machine Engineering Aplications

  • Autoři: Brachtl, M., Mikšíček, L., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Handheld and Ubiquitous Computing. Berlin: Springer, 1999, pp. 337-339. ISBN 3-540-66550-1.
  • Rok: 1999

Multimedia and Internet Market in the Czech Republic

  • Autoři: prof. Ing. Pavel Slavík, CSc., Kolář, J., Šporka, A.
  • Publikace: Workshop on Multimedia Production. Salzburg: Europrix, 1999, pp. 1-15.
  • Rok: 1999

Navigation System for Blind Users in Mobile Computing Environment

Perception of Pictures without Graphical Interface

  • Pracoviště: Katedra počítačů
  • Anotace:
    This paper deals with a problem of handling of graphical information in an envirornment with some limitation.

Scientific Visualization as a Tool for Power Engineering Education

  • Pracoviště: Katedra počítačů
  • Anotace:
    Příspěvek se týká aplikace metody vědecké vizualizace v oblasti výuky energetiky.

Scientific Visualization as a Tool for Power Engineering Education

Structural and Semantic Dialogue Filters

  • Pracoviště: Katedra počítačů
  • Anotace:
    The problem of the access of blind people to the graphical information (in a form of picture) is discussed. It is necessary to reduce amount of complex information of the picture to keep understandability of the picture description for blind user. This is solved by special seman- tic and structural dialog filters, which filter required information. The research has been conducted in the framework of several projects. The result of this research is an implementation of tools for creating and bro- wsing the picture description. Because of the similarity between picture description and hypertext document description the filtering methods developed could be also used on any hypertext document, which follows our document structure [3] definition made in XML [6]. The method de- veloped allows the user to transform two-dimensional information into textual one. In such a way complex manipulations can be performed in textual form.

Structural and Semantic Dialogue Filters

  • Autoři: Mikovec, Z., Klíma, M., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Text, Speech and Dialogue. Berlin: Springer, 1999, pp. 280-285. ISBN 3-540-66494-7.
  • Rok: 1999

Teaching Java at CTU Prague

  • Autoři: Daněček, J., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Proceedings of Java in Computing Curriculum 3. London: South Bank University, 1999, pp. 1-7.
  • Rok: 1999

Visualization of Genetic Algorithms in a Learning Environment

  • Autoři: Obitko, M., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Spring Conference on Computer Graphics, SCCG'99. Bratislava: Univerzita Komenského, 1999. pp. 101-106. ISBN 80-223-1357-2.
  • Rok: 1999
  • Pracoviště: Katedra počítačů
  • Anotace:
    In this paper new techniques for the visualization of genetic algorithms (GAs) are presented. These techniques enable us to visualize whole the GA, not only solution development as other techniques do. A software package in Java for using and visualizing GAs was written and used to write applets visualizing the working of GAs. Some of these applets were used to form a learning environment for genetic algorithms.

Development of Software Engineering Educational Model at CTU Prague

Diphone Voice Synthesis Using Fast Fourier Transformation

  • Autoři: Žikovský, P., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Text, Speech, Dialogue. Brno: Masarykova univerzita, 1998, pp. 333-338. ISBN 80-210-1900-X.
  • Rok: 1998

Hierarchical Visibility Culling with Occlusion Trees

History of Hacking - legenda a skutečnost (1.část)

History of Hacking - legenda a skutečnost (2.část)

Modelling of the Environmental Impact of Main Airborne Pollutants Producers

Modelling of the Environmental Impact of Main Airborne Pollutants Producers

  • Pracoviště: Katedra počítačů
  • Anotace:
    Využití modelu znečištění ovzduší pro řízení produkce elektráren ve smogových situacích.

Navigation System for Blind Users in Mobile Computing Environment

New Multimedia Technologies at CTU Prague

Selective Decompression for the Visualization in Networks

  • Autoři: Chlumský, P., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Proceedings of Spring Conference on Computer Graphics 1998. Bratislava: Univerzita Komenského, 1998, pp. 143-152. ISBN 80-223-0837-4.
  • Rok: 1998

Three-Dimensional Visualization of Atomic Collision Cascades

  • Autoři: Šroubek, F., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Visualization in Scientific Computing '98. Wien: Springer, 1998, pp. 129-138. ISBN 3-211-83209-2.
  • Rok: 1998

Three-Dimensional Visualization of Atomic Collision Cascades

  • Autoři: Šroubek, F., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: 9th Eurographics Workshop on Visualization in Scientific Computing 1998. Wien: Springer, 1998, pp. 181-191. ISBN 3-211-83209-2.
  • Rok: 1998

Virtual Reality for Blind Users

Control of Lossy Compression of Three-Dimensional Data

  • Autoři: Diblík, P., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Workshop 97. Praha: České vysoké učení technické v Praze, 1997. pp. 295-296.
  • Rok: 1997

Control of Lossy Compression of Three-Dimensional Data

  • Autoři: Diblík, P., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Spring Conference on Computer Graphics. Bratislava: Univerzita Komenského, 1997, pp. 144-151. ISBN 80-223-1176-6.
  • Rok: 1997

Controlled Lossy Compression of Multidimensional Data

  • Autoři: Diblík, P., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Proceedings of 8th Eurographics Workshop on Visualization in Scientific Computing. Boulogne sur Mer: Universite du Littoral, 1997, pp. 183-192.
  • Rok: 1997

EYE - the Navigation and Training System for Blind

Grammars and Rewriting Systems as Models for Graphical User Interfaces

HCI in the Czech Republic

Hierarchical Erosion of Synthetical Terrains

  • Autoři: Beneš, B., Marák, I., Šimek, P., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Spring Conference on Computer Graphics. Bratislava: Univerzita Komenského, 1997, pp. 93-100. ISBN 80-223-1176-6.
  • Rok: 1997

Internet Applications at Department of Computer Science and Engineering

  • Autoři: prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Computer Networking and Services of Distributed Systems. Aachen: Verlag der Augustinus Buchhandlung, 1997, pp. 107-119.
  • Rok: 1997

Terrain Erosion Model Based on Rewriting Matricies

  • Autoři: Marák, I., Beneš, B., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Workshop 97. Praha: České vysoké učení technické v Praze, 1997. pp. 299-300.
  • Rok: 1997
  • Pracoviště: Katedra počítačů
  • Anotace:
    Eroze syntetické krajiny pomocí přepisování matic

Terrain Erosion Model Based on Rewriting of Matrices

  • Autoři: Marák, I., Beneš, B., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: WSCG '97. Plzeň: Západočeská universita, 1997. p. 341-350. ISBN 80-7082-306-2.
  • Rok: 1997

Tvoříme prototypy rychle a levně

Vizualizace dat mezinárodně

Vybíráme a testujeme CAD/CAM systémy

7. Eurographics Workshop byl u nás

A New Method for Formal Description of 3D Scenes

  • Autoři: Manda, V., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Proceedings of the Fourth International Conference in Central Europe on Computer Graphics and Visualisation. Plzeň: Západočeská universita, 1996, pp. 199-208. ISBN 80-7082-239-2.
  • Rok: 1996

Co znamená "grafický výkon"?

Computer Graphics Education in the Czech Republic

Constraint Satisfaction Problem Solved by Minimal Changes Method

  • Autoři: Šimek, P., prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Proceedings of the Fourth International Conference in Central Europe on Computer Graphics and Visualisation. Plzeň: Západočeská universita, 1996, pp. 311-320. ISBN 80-7082-239-2.
  • Rok: 1996

National Report for the Czech Republic

  • Autoři: prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Inter University Cooperation in Europe in the Field of Computing. Dublin: Dublin City University, 1996, pp. 173-175.
  • Rok: 1996

Některé typické aplikace vizualizace dat

Three-Dimensional Information System on the World Wide Web

Visualization of the Dispersion of Airborne Effluents

  • Autoři: prof. Ing. Pavel Slavík, CSc., Hrdlička, F., Pavlis, T., Vlček, P.
  • Publikace: 7th Eurographics Workshop on Visualization in Scientific Computing. Praha: ČVUT FEL, Katedra počítačů, 1996, pp. 153-169.
  • Rok: 1996

Vizualizace dat

Vzpomínky na SIGGRAPH '95

Zažili jsme technickou univerzitu budoucnosti

Acceleration Interaction in 3D Space by Means of Constraints

  • Autoři: prof. Ing. Pavel Slavík, CSc.,
  • Publikace: CA-Integration in Theorie und Praxis. Berlin: Springer, 1995, pp. 137-152. ISBN 3-540-59444-2.
  • Rok: 1995

CAD Systems: Trends and Developments

  • Autoři: prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Information Management in Computer Integrated Manufacturing. Berlin: Springer, 1995. p. 478-492. ISBN 3-540-60286-0.
  • Rok: 1995

Dithering as a Method for Image Data Compression

  • Autoři: prof. Ing. Pavel Slavík, CSc., Přikryl, J.
  • Publikace: The Third International Conference in Central Europe on Computer Graphics and Visualization 95 - Conference Proceedings. Volume II. Plzeň: Západočeská universita, 1995, pp. 283-288. ISBN 80-7082-186-8.
  • Rok: 1995
  • Pracoviště: Katedra počítačů
  • Anotace:
    Data compression in general is not a new problem... this paper we will deal with image data compression. We will discuss various approaches to the image compression and we will present a new method which does not suffer from some disadvantages of methods widely used.

Experimental Multimedia System - EMMS 2.0

Fraktály a jejich vlastnosti

World Wide Web - historie a současnost

Základní informace o projektu WISE/E

Accelerating Interaction in 3D Space by Means of Constraints

ESA-W - Educational System for AutoCAD on Sun Workstations

Grammars and Rewriting Systems as Models for GUI

  • Autoři: prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Proceedings of the First Interdisciplinary Workshop on Cognitive Modeling and UI Development. Vienna: European Society for the Study of Cognitive Systems, 1994, pp. 173-184.
  • Rok: 1994

Interaction in 3D Space and 3D Window Manager

  • Autoři: prof. Ing. Pavel Slavík, CSc., Herr, R.
  • Publikace: Auxiliary Proceedings of HCI 94. Glasgow: University of Glasgow, 1994, pp. 1-2.
  • Rok: 1994

Komprese grafické informace a multimediální systémy

Multimédia a virtuální realita

Multimedia in University Education

Datové formáty pro zpracování obrazové informace

  • Autoři: prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Sborník 13. semináře odborné skupiny pro deskriptivní geometrii, počítačovou grafiku a technické kreslení. Plzeň: Západočeská universita, 1993, pp. 28-33.
  • Rok: 1993

Datové struktury pro počítačovou grafiku

  • Autoři: prof. Ing. Pavel Slavík, CSc.,
  • Publikace: Zimní škola počítačové grafiky a CAD systémů. Plzeň: Západočeská universita, 1993, pp. 3-27.
  • Rok: 1993

Design of Parametric Construction Parts

ESA-The Educational System for Autocad

Geometrické modelování: ACIS - standard pro konec tisíciletí ?

Object Oriented Manipulation with Grafical Objects

Object Oriented Manipulation with Graphical Objects

  • Autoři: prof. Ing. Pavel Slavík, CSc., Foller, A.
  • Publikace: Workshop 93. Praha: České vysoké učení technické v Praze, 1993, pp. 111-112.
  • Rok: 1993

Programování obrazových adaptérů PC

Solution of Form Factors in Radiosity Method

Za stránku zodpovídá: Ing. Mgr. Radovan Suk