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Ing. Martin Bernas, CSc.

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Optimized H.264 Compression of Sign Language Video

  • Authors: Zatloukal, P., Ing. Martin Bernas, CSc.,
  • Publication: Multimedia Tools and Applications. 2017, 76(15), 16225-16237. ISSN 1380-7501.
  • Year: 2017
  • DOI: 10.1007/s11042-016-3905-1
  • Link: https://doi.org/10.1007/s11042-016-3905-1
  • Department: Department of Radioelectronics
  • Annotation:
    In TV broadcasting deaf are not able to get information from the audio content. In public televisions, some programs may be accompanied by a sign language interpreter as a part of the broadcasted signal. As a supplementary service, it would enable more programs to be accessible with a sign language interpreter to assist in comprehension. To be able to transmit such data flow separately, we define the parameters of compression of sign language interpreter image to ensure intelligibility and quality while maintaining low bitrate. This paper deals with specific video compression of Czech sign language interpreter based on regions of interest implemented to the x264 open source library. The results of this approach are verified in subjective tests with the deaf and hearing evaluators. The experiments examine the intelligibility of sign language expressions containing minimal pairs for different levels of image compression and also evaluate the subjective quality of the final image.

Independent Transmission of Sign Language Interpreter in DVB - Assessment of Image Compression

  • Authors: Zatloukal, P., Ing. Martin Bernas, CSc., Dvořák, L.
  • Publication: Seventh International Conference on Machine Vision (ICMV 2014). Washington: SPIE - The International Society for Optical Engineering, 2015. ISSN 0277-786X. ISBN 9781628415605.
  • Year: 2015
  • DOI: 10.1117/12.2180921
  • Link: https://doi.org/10.1117/12.2180921
  • Department: Department of Radioelectronics
  • Annotation:
    Sign language on television provides information to deaf that they cannot get from the audio content. If we consider the transmission of the sign language interpreter over an independent data stream, the aim is to ensure sufficient intelligibility and subjective image quality of the interpreter with minimum bit rate. The work deals with the ROI-based video compression of Czech sign language interpreter implemented to the x264 open source library. The results of this approach are verified in subjective tests with the deaf. They examine the intelligibility of sign language expressions containing minimal pairs for different levels of compression and various resolution of image with interpreter and evaluate the subjective quality of the final image for a good viewing experience.

Complementary services of digital television

  • Authors: Ing. Martin Bernas, CSc., Švachula, Z., Zatloukal, P.
  • Publication: Pražská technika. 2013, 15(6/2013), 14-15. ISSN 1213-5348.
  • Year: 2013
  • Department: Department of Radioelectronics
  • Annotation:
    This paper deals with new hybrid interactive television platform HbbTV (Hybrid Broadcast Broadband TV). After presentaton of its principles the use of this platform for deaf viewers is discused.

HbbTV - Experimental workplace at CTU

  • Authors: Švachula, Z., Ing. Martin Bernas, CSc.,
  • Publication: Slaboproudý obzor. 2013, 69 (4)(4 / 2013), 25-28. ISSN 0037-668X.
  • Year: 2013
  • Department: Department of Radioelectronics
  • Annotation:
    This paper deals with new hybrid interactive television platform HbbTV (Hybrid Broadcast Broadband TV). It presents the reasons, why this platform was created and describes its basic principles. The main part of this article describes the experimental workplaces for development of new HbbTV applications, which was created at the Department of Radioelectronics, FEE, CTU.

Investigation of Regions of Interest for Deaf in Czech Sign Language Content

  • Authors: Švachula, Z., Ing. Martin Bernas, CSc., Zatloukal, P., Klabanová, L.
  • Publication: International Journal of Software and Web Sciences (IJSWS). 2013,(3), 44-49. ISSN 2279-0063.
  • Year: 2013
  • Department: Department of Radioelectronics
  • Annotation:
    Tasks such as displaying optional television sign language interpreter or synthesis of sign language assume fine resolution while maintaining low bit rates. This paper describes the determination of important regions of interest for deaf and hard of hearing when watching a sign language speaker or interpreter in television content. Proposed results are useful for selecting an appropriate compression scheme for coding both real and virtual sign language interpreters, and for virtual sign language interpreter modeling as well.

Visual Regions of Interest in Sign Language Content

  • Authors: Zatloukal, P., Švachula, Z., Ing. Martin Bernas, CSc.,
  • Publication: Studie z aplikované lingvistiky. 2011, 2(2), 63-66. ISSN 1804-3240.
  • Year: 2011
  • Department: Department of Radioelectronics
  • Annotation:
    The article deals with the measurement of visual regions of interest of deaf viewers when watching the sign language interpreter on TV. The results will be used to optimize additional transfer of image of sign language interpreter through the television channel. Currently, the interpreter is transferred as a fixed part of the television image in selected programs. Newly, the transfer should be independent on the television signal. The viewer would then have a choice to display interpreter in the chosen size and location on the TV screen only when needed. This way, it will be possible to supplement any television program with a sign language interpreter.

CCTV Effectiveness Study

GRB 050904: Bootes early R-band detection

  • Department: Department of Radioelectronics
  • Annotation:
    The BOOTES-1B 30 cm robotic telescope in Southern Spain, has followed-up the high-redshift GRB 050904 (Cummings et al. GCN 3910, Haislip et al. 3913, 3914, Reichart et al. 3915, Antonelli et al. GCN 3924) starting 124s after the onset of the burst. The upper limits derived from our R-band filter measurements during the time interval 124s -1100s after the event, together with the values reported by TAROT (Klotz et al. GCN 3917) are consistent with an early decay index of alpha = -1.2 (i.e. in agreement with the value reported at a later epoch in the J-band by Haislip et al. GCN 3914).

New Methods of Audio Signal Compression

  • Department: Department of Radioelectronics
  • Annotation:
    Overview of present modern audio compression methods MPEG-1, MPEG-2, MPEG-2AAC, MPEG-4, ATRAC.

Qualitative Aspects of Image Compression Methods in Multimedia Systems

Simultaneous and optical follow-up GRB observations by BOOTES

  • DOI: 10.1393/ncc/i2005-10137-x
  • Link: https://doi.org/10.1393/ncc/i2005-10137-x
  • Department: Department of Radioelectronics
  • Annotation:
    Since 1998 BOOTES has provided follow-up observations for more than 70 GRBs; the most important results obtained so far are the detection of an OT in the GRB 000313 error box and the non-detection of optical emission simultaneous to the high-energy emission for several GRBs (both long/soft and short/hard events).

A Determination Accuracy of Camera Position in a Virtual Set

  • Authors: Teisler, M., Ing. Martin Bernas, CSc.,
  • Publication: Conference Proceedings of Radioelektronika 2004. Bratislava: Slovak University of Technology, 2004. pp. 159-161. ISBN 80-227-2017-8.
  • Year: 2004
  • Department: Department of Radioelectronics
  • Annotation:
    The Virtual set is an integral part of today's TV studios. The determination of camera position is a necessary condition, for its right function. This work deals with accuracy of camera position determination in virtual studio.

BOOTES: A Stereoscopic and Robotic Ground-support Facility for the INTEGRAL Era

  • Authors: Castro-Tirado, A.J., Mateo Sanguino, T.J., de Ugarte Postigo, A., Castro Cerón, J.M., Jelínek, M., Kubánek, P., Hudec, R., doc. Ing. Stanislav Vítek, Ph.D., prof. Mgr. Petr Páta, Ph.D., Ing. Martin Bernas, CSc., Berná, J.A., Soldán, J., Gorosabel, J., Soria, T., de la Morena, B., Reglero, V., Torres, J.
  • Publication: The 5th INTEGRAL Workshop on The INTEGRAL Universe. Noordwijk: European Space Agency, 2004. pp. 637-640. ISSN 0379-6566. ISBN 92-9092-863-8.
  • Year: 2004
  • Department: Department of Radioelectronics
  • Annotation:
    Description of BOOTES - the Burst Observer and Optical Transient Exploring System, aimed towards the detection and study of the optical transients that are generated in conjunction with the elusive Gamma Ray Bursts (GRB).

BOOTES: Technological developments and scientific results by a stereoscopic system with two stations spaced by 240 km

  • DOI: 10.1063/1.1810953
  • Link: https://doi.org/10.1063/1.1810953
  • Department: Department of Radioelectronics
  • Annotation:
    An overview of the technological developments at the Burst Observer and Optical Transient Exploring System (BOOTES) is given. The most important scientific results obtained so far are the detection of an OT in the GRB 000313 error box and the non detection of optical emission simultaneous for GRB 010220, GRB 030226 (long/soft events), GRB 020531 and GRB 021201 (short/hard events). With the recent instrumental and technical developments, BOOTIES multiplies its science capabilities.

Lossy Compression of Astronomical Images

  • Authors: Ing. Martin Bernas, CSc., prof. Mgr. Petr Páta, Ph.D., Weinlich, J., Hudec, R., Castro-Tirado, A.
  • Publication: The 5th INTEGRAL Workshop on The INTEGRAL Universe. Noordwijk: European Space Agency, 2004. pp. 829-832. ISSN 0379-6566. ISBN 92-9092-863-8.
  • Year: 2004
  • Department: Department of Radioelectronics
  • Annotation:
    The paper deals with the discussion of the lossless and lossy compression methods of astronomical images.

Objective Image Quality Assessment

  • Authors: Kulhánek, J., Ing. Martin Bernas, CSc.,
  • Publication: Digital Technologies 2004. Žilina: Žilinská univerzita, 2004. p. 1-2. ISBN 80-8070-334-5.
  • Year: 2004

PCA Based Compression Technique for the BOOTES Image Data

  • Department: Department of Radioelectronics
  • Annotation:
    The study deals with the possibility of PCA technique (Karhunen-Loeve expansion) application for astronomical data compression. The real images from BOOTES experiment have been used as testing signals.

Robotic observatory tools for wide-field observations

  • Authors: Postigo, A.D., Castro-Tirado, A.J., Sanguino, T. J. M., Palomo, M.T.F, Galiano, J. A. B., Ceron, J. M. C., prof. Mgr. Petr Páta, Ph.D., Soldan, J., Postigo, A-, Hudec, R., Jelinek, M., Vitek, S., Kubanek, P., Carretero, B.A. D., Rierea, J. T., Ing. Martin Bernas, CSc.,
  • Publication: Baltic Astronomy. 2004, 13(4), 696-699. ISSN 1392-0049.
  • Year: 2004
  • Department: Department of Radioelectronics
  • Annotation:
    The Burst Observer and Optical Transient Exploring System (BOOTES) is a project mainly devoted to gamma-ray burst (GRB) research. It has been operating and producing important scientific results since 1998. Here we present two of the technical improvements that will allow BOOTES to keep on the leading edge of GRB investigation: the automatic image analysis software and the wide-field spectrograph.

A Determination of Camera Position in a Virtual Set

  • Authors: Teisler, M., Ing. Martin Bernas, CSc.,
  • Publication: Digital Communications '03. Žilina: EDIS-vydavatelstvo ŽU, 2003. pp. 75-76. ISBN 80-8070-165-2.
  • Year: 2003

Analysis of Camera Position in Virtual Studio

  • Authors: Teisler, M., Ing. Martin Bernas, CSc.,
  • Publication: COFAX - Telekomunikácie 2003. Bratislava: D&D STUDIO, 2003. pp. 307-308. ISBN 80-967019-4-0.
  • Year: 2003

Determination of the Camera Position In Virtual Studio

  • Authors: Ing. Martin Bernas, CSc., Teisler, M.
  • Publication: ISSPIT 2003. Darmstadt: IEEE, 2003. pp. 2/TP5. ISBN 0-7803-8293-5.
  • Year: 2003

Effect of BOOTES Image Data Compression using Karhunen-Loeve Decomposition upon Astrometry Measurement Accuracy

Optical Transient Monitor (OTM) for BOOTES Project

Recent Developments in the BOOTES Experiment

  • Authors: de Ugarte Postigo, A., Mateo Sanguino, T.J., Castro Cerón, J.M., prof. Mgr. Petr Páta, Ph.D., Ing. Martin Bernas, CSc., Jelínek, M., prof. RNDr. René Hudec, CSc., McBreen, S., Berná, J.Á., García Dabó, C.E., Gorosabel, J., Más-Hesse, J.M., Soria, T., de la Morena, B.A., Torres Riera, J., Castro-Tirado, A.J.
  • Publication: AIP Conference Proceedings 662. Cambridge: Massachusetts Institute of Technology, 2003. pp. 553-555. ISBN 0-7354-0122-5.
  • Year: 2003

The BOOTES experiment in support of the Gran Telescopio Canarias (GTC) in the study of the high energy universe

  • Authors: Ceron, CJMC, Postigo, AD, Garcia-Dabo, C.E., Sanguino, S TJM, prof. Mgr. Petr Páta, Ph.D., Ing. Martin Bernas, CSc., Jelinek, M., Hudec, R., Berna, JA, Gorosabel, J., Mas-Hesse, JM, Castro-Tirado, AJ
  • Publication: SCIENCE WITH THE GTC 10-M TELESCOPE. 2003. pp. 77-80. REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA, SERIE DE CONFERENCIAS. ISSN 1405-2059. ISBN 970-32-0608-5.
  • Year: 2003
  • Department: Department of Radioelectronics
  • Annotation:
    A GTC target of opportunity program (ToO) for gamma ray burst (GRB) afterglows will be a very powerful tool for studying the primitive Universe. Photometry and spectroscopy of GRBs are very suitable for tracing the star formation rate of the Universe at high redshifts (prompt optical and near-infrared observations with the GTC could detect GRBs to z less than or similar to 17; Castro-Tirado et al., this volume, p.. 252; Gorosabel et al., this volume, p. 288). BOOTES (Burst Observer and Optical Transient Exploring System) can very efficiently support a ToO at the GTC through its robotized, extremely fast response capabilities. In this paper, we discuss the ongoing effort to finalize a real time, online, automatic data analysis system for BOOTES. Such a system will be able to provide early reliable, and accurate GRB positions (confirmed by satellite) to trigger a GTC ToO.

Two versions of Optical Transient Monitor Software for BOOTES Experiment

Compression of Scientific Images

  • Authors: Nekola, M., Ing. Martin Bernas, CSc.,
  • Publication: 8. mezinárodní vedecká konferencia COFAX-TELEKOMUNIKÁCIE 2002 Zborník prednášok. Bratislava: D&D STUDIO, 2002. pp. P81-P82. ISBN 80-967019-5-9.
  • Year: 2002

Correction of CCD Sensor Noise

  • Authors: Nekola, M., Ing. Martin Bernas, CSc.,
  • Publication: SPIE Proceedings, Vol. 5036. Washington: SPIE, 2002. pp. 152-156. ISSN 0277-786X. ISBN 0-8194-4837-0.
  • Year: 2002

Detection of an optical transient following the 13 March 2000 short/hard gamma-ray burst

GRB 020531, simultaneous optical observations

Highly-Efficient Image Compression Techniques and Subjective Image Quality

  • Department: Department of Radioelectronics
  • Annotation:
    The paper is devoted to the impact of modern image compression methods on subjective image quality. Some initial experiments with JPEG, LuRaWave and KLT were done and the objective measures were compared with subjective image quality evaluated by a group of observers.

Image Compression Standards

  • Authors: Ing. Martin Bernas, CSc.,
  • Publication: Mikroskopie 2002. Praha: České vysoké učení technické v Praze, 2002. pp. 78-87. ISBN 80-01-02580-2.
  • Year: 2002

Image Quality Evaluation

  • Authors: Ing. Martin Bernas, CSc.,
  • Publication: Proceedings VIPromCom - 2002. Zadar: Croatian Society Electronics in Marine - ELMAR, 2002. pp. 133-136. ISBN 953-7044-01-7.
  • Year: 2002
  • Department: Department of Radioelectronics
  • Annotation:
    This paper is devoted to subjective and objective tests of the image quality. The images were processed using different compressing algorithms (JPEG, KLT, Lura-wavelet) with compression ratio up to 100. After decompression they were tested on the quality changes.

Model of the Human Visual System for the Evaluation of Perceptual Image Quality of Compressed Images

New Support for Data Compression in FITS Format

  • Authors: Nekola, M., Ing. Martin Bernas, CSc.,
  • Publication: Radioelektronika 2002. Bratislava: Slovak University of Technology, Faculty of Civil Engineering, 2002. pp. 120-123. ISBN 80-227-1700-2.
  • Year: 2002
  • Department: Department of Radioelectronics
  • Annotation:
    New version CFITSIO library with enhanced support for data compression was relased in January 2002. Compression methods and algorithms involved in CFITSIO and results of tests on astronomical images are described in this paper.

Application of Several Compression Methods on Large Databases of Astronomical Images

Application of the Karhunen-Loeve Decomposition for Astronomical Data Storage

BOOTES-1: a Robotic Telescope 1.998 - 2.000

  • Authors: Castro Cerón, J.M., Castro-Tirado, A., Soldán, J., prof. RNDr. René Hudec, CSc., Ing. Martin Bernas, CSc., prof. Mgr. Petr Páta, Ph.D., Mateo Sanguino, T., de Ugarte Postigo, A., Berná, Á., Nekola, M., Gorosabel, J., de la Morena, B., Más-Hesse, J.M., Giménez, Á., Torres Riera, J.
  • Publication: COSMICS EXPLOSIONS: Gamma-Ray Bursts & Related Phenomena. Jerusalem: The Hebrew University of Jerusalem, 2001.
  • Year: 2001

Gamma Ray Burst Follow Up Observations with BOOTES-1 in 1998-2000

GRB 010220, Simultaneous Optical Observations by BOOTES-1

New Properties of Optical Transient Monitor (OTM)

New Version of Optical Transient Monitor for BOOTES Project

Objective and Subjective Image Quality Elevation for Security Technology

Quantization Error of Karhunen-Loeve Expansion of Scientific Images

Search for Gamma Ray Bursts Quasi Simultaneous Optical Emission with BOOTES-1

Subjective Image Quality in Image Processing Systems

The Evaluation of Image Quality in the Modern Multimedia Compression Standards

The Optical Transient Monitor - A Sky Monitoring System

Two Years of Gamma-Ray Burst Follow-Up Observations with BOOTES-1

Application of the Karhunen-Loeve Decomposition for Astronomical Data Storage

Data Compression for BOOTES Project

DVB - Source and Channel Coding

  • Authors: Ing. Martin Bernas, CSc.,
  • Publication: Radiokomunikace 2000. Praha: ČVUT FEL, Katedra radioelektroniky, 2000. p. 233-256. ISBN 80-01-02142-4.
  • Year: 2000

Fast and Simple Data Compression

  • Authors: Nekola, M., Ing. Martin Bernas, CSc.,
  • Publication: The Fifth Huntsville Gamma Ray Burst Symposium - Program & Abstracts. Woodbury: American Institute of Physics, 2000. pp. 887-889. ISBN 1-56396-947-5.
  • Year: 2000

First Results from the Burst Observer and Optical Transient Exploring System Station 1 (BOOTES-1)

  • Authors: Castro-Tirado, A.J., Ing. Martin Bernas, CSc., prof. Mgr. Petr Páta, Ph.D., Soldán, J., Hudec, R., de Ugarte, A., Sanguino, T.M., de la Morena, B., Berna, J.A.
  • Publication: The Fifth Huntsville Gamma Ray Burst Symposium - Program & Abstracts. Woodbury: American Institute of Physics, 2000. pp. 260-264. ISBN 1-56396-947-5.
  • Year: 2000

Gamma-Ray Burst Follow-Up Observations with BOOTES-1 in 1998-2000

GRB 000126, Optical Observations

GRB 000313, Optical Transient in the BATSE Error Box

GRB 000607, Optical Observations

Lossless and Lossy Compression of Images from the OMC Experiment of Integral Project

Novel Image Data Compression Method Suitable for Satellite Applications

Optical Observations of GRBs: EN, BART and OMC

  • Authors: Hudec, R., Soldán, J., Nekola, M., Florián, J., Hudcová, V., Ing. Martin Bernas, CSc., prof. Mgr. Petr Páta, Ph.D., Palazzi, E., Masetti, N.
  • Publication: The Fifth Huntsville Gamma Ray Burst Symposium - Program & Abstracts. Woodbury: American Institute of Physics, 2000. pp. 265-269. ISBN 1-56396-947-5.
  • Year: 2000

Optical Transient Monitor for BOOTES Project

Properties of Karhunen-Loeve Expansion of Astronomical Images in Comparison with Other Integral Transforms

Two Years of Gamma-Ray Burst Follow-Up Observations with BOOTES-1

BART, BOOTES and OMC: Monitoring of AGNs-blazars

  • Authors: Hudec, R., Soldán, J., Hudcová, V., Ing. Martin Bernas, CSc., prof. Mgr. Petr Páta, Ph.D., Hroch, F., Castro-Tirado, A.J., Mas-Hesse, J.M., Gimenez, A.
  • Publication: Blazar Monitoring towards the Third Millennium, Proceedings of the OJ-94 Annual Meeting 1999. Torino: Osservatorio Astronomico di Torino, 1999. pp. 131-133.
  • Year: 1999

The Burst Observer and Optical Transient Exploring System (BOOTES)

Approaches to Losseles and Loosy Image Compressions Employed in the OMC Experiment Placed Onboard the INTEGRAL OMC

Determination of Transform Matrix Parameters Using Pseudocorrelation Method of Significant Points

Optical Transient Monitor

Status of the BOOTES Experiment

  • Authors: Tirado, A., Hudec, R., Ing. Martin Bernas, CSc., Soldan, J., Gorosabel, J., prof. Mgr. Petr Páta, Ph.D.,
  • Publication: Gamma Ray Bursts, AIP Conference Proceedings. Woodbury: American Institute of Physics, 1998. pp. 874-878. ISBN 1-56396-766-9.
  • Year: 1998

Methods for Identification of Stars on Astronomical Images

Application of Signal Processors in Detection and Evaluation of Gamma Ray Bursts

Classification of Pathological Changes in Ultrasonic Mammograms

  • Authors: Hozman, J., Drábek, D., Ing. Martin Bernas, CSc., Daneš, J.
  • Publication: Proceedings of the 7th International IMEKO TC-13 Conference on Measurement in Clinical Medicine. Bratislava: Slovenská akademie věd, 1995, pp. 189-191. ISBN 80-967402-0-2.
  • Year: 1995

Parallel Optical Video Processor Simulation

  • Authors: Vítek, P., Košťál, E., Ing. Martin Bernas, CSc.,
  • Publication: Photonics'95. Prague: European Optical Society, 1995. pp. 530-533.
  • Year: 1995

Television Beyond 2000. Future and Problems of Television Technology

Biomedical Image Processing Applications

  • Authors: Hozman, J., Ing. Martin Bernas, CSc., Drábek, D., Trnka, J., Vařenka, J., Kubínek, R., Javorský, S., Daneš, J.
  • Publication: Biomedical Engineering and Biotechnnology. Book of Abstracts. Praha: České vysoké učení technické v Praze, 1994, pp. 22.
  • Year: 1994

Teaching of Subject "Image Information Processing" at the Department of Radioelectronics FEE CTU

Elements and Methods for Optical Processing of Information

Responsible person Ing. Mgr. Radovan Suk