Chair of Multimedia Telecommunications and Microelectronics


Olgierd Stankiewicz

Olgierd Stankiewicz


received his Ph.D. degree from Poznan University of Technology in 2014. In 2005 he won second place in IEEE Computer Society International Design Competition (CSIDC) held in Washington D.C., USA. Currently, he is a research assistant at Chair of Multimedia Telecommunications and Microelectronics. His professional interests include signal processing, video compression algorithms, computer graphics and hardware solutions. He is also interested in music composition, game programming and art.

Contact

Room: 117 (Polanka)
Phone: +48 61 665 3840
Mail: ostank@multimedia.edu.pl

Awards

Research projects

Publications

Book chapters

  1. Marek Domański, Tomasz Grajek, Caroline Conti, Carl James Debono, Sérgio M. M. de Faria, Peter Kovacs, Luís F. R. Lucas, Paulo Nunes, Cristian Perra, Nuno M. M. Rodrigues, Mårten Sjöström, Luís Ducla Soares, Olgierd Stankiewicz,
    Chapter: Emerging Imaging Technologies: Trends and Challenges,
    Book: 3D Visual Content Creation, Coding and Delivery, Editors: Pedro Amado Assunção, Atanas Gotchev,
    Signals and Communication Technology: Springer International, 2019, pp. 5-39, ISBN: 978-3-319-77841-9, ISSN: 1860-4862,
    EndNoteCitationDOI
  2. Olgierd Stankiewicz,
    Chapter: Noise in Multiview Videos,
    Book: Noise Reduction: Methods, Applications and Technology, Editors: Marc Farrow,
    Acoustics Research and Technology: Nova Science Publishers, 2018, pp. 1-33, ISBN: 978-1-53613-542-8,
    EndNoteCitation
  3. Olgierd Stankiewicz, Gauthier Lafruit, Marek Domański,
    Chapter: Multiview video: Acquisition, processing, compression and virtual view rendering,
    Book: Image and Video Processing and Analysis and Computer Vision, Editors: Dr. Rama Chellappa , Dr. Sergios Theodoridis,
    Academic Press Library in Signal Processing: Vol. 6, Academic Press, January 2018, pp. 3-74,
    EndNoteCitationDOI
  4. Damian Karwowski, Tomasz Grajek, Krzysztof Klimaszewski, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    Chapter: 20 Years of Progress in Video Compression - from MPEG-1 to MPEG-H HEVC. General View on the Path of Video Coding Development,
    Book: Image Processing and Communications Challenges 8, Editors: Ryszard S. Choras,
    Advances in Intelligent Systems and Computing: No. 525, Springer International, 2016, pp. 3-15, ISBN: 978-3-319-47273-7, ISSN: 2194-5375,
    Full textEndNoteCitationDOI
  5. Marek Domański, Krzysztof Klimaszewski, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    Chapter: Efficient Transmission of 3D Video Using MPEG-4 AVC/H.264 Compression Technology,
    Book: Computer Communication Networks and Telecommunications, Editors: Zeadally, Sherali and Cerqueira, Eduardo and Curado, Marília and Leszczuk, Mikołaj,
    Lecture Notes in Computer Science: Vol. 6157, Springer Berlin Heidelberg, Berlin, 2010, pp. 145-156, ISBN: 978-3-642-13788-4, ISSN: 0302-9743,
    Full textEndNoteCitationDOI

International journals

  1. Olgierd Stankiewicz, Krzysztof Wegner, Damian Karwowski, Jakub Stankowski, Krzysztof Klimaszewski, Tomasz Grajek,
    HEVC encoding assisted with noise reduction,
    International Journal of Electronics and Telecommunications, Vol. 64, No. 3, Electronics and Telecommunications Committee of Polish Academy of Sciences, Warsaw, 2018, pp. 285-292, ISSN: 0867-6747,
    Full textEndNoteCitationDOI
  2. Olgierd Stankiewicz, Marek Domański,
    Depth Map Estimation based on Maximum a Posteriori Probability,
    IEIE Transactions on Smart Processing and Computing, Vol. 7, No. 1, 28th February 2018, pp. 49-61,
    Full textEndNoteCitation
  3. Jakub Stankowski, Damian Karwowski, Tomasz Grajek, Krzysztof Wegner, Jakub Siast, Krzysztof Klimaszewski, Olgierd Stankiewicz, Marek Domański,
    Analysis of Compressed Data Stream Content in HEVC Video Encoder,
    International Journal of Electronics and Telecommunications, Vol. 61, No. 2, Electronics and Telecommunications Committee of Polish Academy of Sciences, Warsaw, 2015, pp. 121-127, ISSN: 0867-6747,
    Full textEndNoteCitationDOI
  4. Marek Domański, Olgierd Stankiewicz, Krzysztof Wegner, Maciej Kurc, Jacek Konieczny, Jakub Siast, Jakub Stankowski, Robert Ratajczak, Tomasz Grajek,
    High Efficiency 3D Video Coding Using New Tools Based on View Synthesis,
    IEEE Transactions on Image Processing, Special Issue on 3D Video Representation, Compression, & Rendering, Vol. 22, No. 9, September 2013, pp. 3517-3527,
    Full textEndNoteCitationDOI

International conferences

  1. Mateusz Lorkiewicz, Olgierd Stankiewicz, Marek Domański, Hsueh-Ming Hang, Wen-Hsiao Peng,
    Fast Selection of INTRA CTU Partitioning in HEVC Encoders using Artificial Neural Networks,
    Signal Processing Symposium 2021 SPSympo, Łódź, Poland, 20-23 Sept. 2021,
    Full textEndNoteCitationDOI
  2. Krzysztof Wegner, Jakub Stankowski, Olgierd Stankiewicz, Hubert Żabiński, Krzysztof Klimaszewski, Tomasz Grajek,
    High Frame-Rate Virtual View Synthesis Based on Low Frame-Rate Input,
    IEEE 22nd International Workshop on Multimedia Signal Processing, MMSP 2020, Tampere, Finland, 21-24 September 2020,
    Full textEndNoteCitation
  3. Adrian Dziembowski, Dawid Mieloch, Olgierd Stankiewicz, Marek Domański,
    Virtual View Synthesis for 3DoF+ Video ,
    34th Picture Coding Symposium, PCS 2019, Ningbo, China, 12-15 November 2019,
    Full textEndNoteCitation
  4. Yasir Al-Obaidi, Tomasz Grajek, Olgierd Stankiewicz, Marek Domański,
    Bitrate Allocation for Multiview Video Plus Depth Simulcast Coding,
    25th International Conference on Systems, Signals and Image Processing, Maribor, Slovenia, 20-22 June 2018,
    Full textEndNoteCitation
  5. Krzysztof Wegner, Dominika Łosiewicz, Marek Domański, Adrian Dziembowski, Tomasz Grajek, Adam Grzelka, Dawid Mieloch, Robert Ratajczak, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    Real-time virtual navigation provision by simple means,
    International Conference on Signals and Electronic Systems, ICSES 2018, Kraków, Poland, September 10-12 2018,
    EndNoteCitation
  6. Krzysztof Wegner, Dominika Łosiewicz, Tomasz Grajek, Olgierd Stankiewicz, Adrian Dziembowski, Marek Domański,
    Omnidirectional View Synthesis and Test Images,
    International Conference on Signals and Electronic Systems, ICSES 2018, Kraków, Poland, September 10-12 2018,
    Full textEndNoteCitation
  7. Krzysztof Wegner, Olgierd Stankiewicz, Tomasz Grajek, Marek Domański,
    Depth estimation from stereoscopic 360-degree video,
    IEEE International Conference on Image Processing ICIP2018, Athens, Greece, 7-10 October 2018,
    Full textEndNoteCitation
  8. Marek Domański, Olgierd Stankiewicz, Krzysztof Wegner, Tomasz Grajek,
    Immersive visual media – MPEG-I: 360 video, virtual navigation and beyond,
    IEEE International Conference on Systems, Signals and Image Processing IWSSIP 2017, Poznań, Poland, 22-24 May 2017,
    Full textEndNoteCitation
  9. Olgierd Stankiewicz, Krzysztof Wegner, Damian Karwowski, Jakub Stankowski, Krzysztof Klimaszewski, Tomasz Grajek,
    Encoding mode selection in HEVC with the use of noise reduction,
    IEEE International Conference on Systems, Signals and Image Processing IWSSIP 2017, Poznań, Poland, 22-24 May 2017,
    Full textEndNoteCitation
  10. Dawid Mieloch, Adrian Dziembowski, Adam Grzelka, Olgierd Stankiewicz, Marek Domański,
    Temporal Enhancement of Graph-Based Depth Estimation Method,
    IEEE International Conference on Systems, Signals and Image Processing IWSSIP 2017, Poznań, Poland, 22-24 May 2017,
    Full textEndNoteCitation
  11. Krzysztof Wegner, Damian Karwowski, Krzysztof Klimaszewski, Jakub Stankowski, Olgierd Stankiewicz, Tomasz Grajek,
    Homogenous HEVC video transcoding by transform coefficient removal,
    IEEE International Conference on Systems, Signals and Image Processing IWSSIP 2017, Poznań, Poland, 22-24 May 2017,
    Full textEndNoteCitation
  12. Adrian Dziembowski, Adam Grzelka, Dawid Mieloch, Olgierd Stankiewicz, Marek Domański,
    Enhancing View Synthesis with Image and Depth Map Upsampling,
    IEEE International Conference on Systems, Signals and Image Processing IWSSIP 2017, Poznań, Poland, 22-24 May 2017,
    Full textEndNoteCitation
  13. Jakub Stankowski, Damian Karwowski, Krzysztof Klimaszewski, Krzysztof Wegner, Olgierd Stankiewicz, Tomasz Grajek,
    Analysis of the complexity of the HEVC motion estimation,
    23rd International Conference on Systems, Signals and Image Processing, IWSSIP 2016, Bratislava, Slovakia, 23-25 May 2016, pp. 1-4, ISBN: 978-1-4673-9555-7 , ISSN: 2157-8702,
    Full textEndNoteCitationDOI
  14. Adrian Dziembowski, Adam Grzelka, Dawid Mieloch, Olgierd Stankiewicz, Marek Domański,
    Depth map upsampling and refinement for FTV systems,
    International Conference on Signals and Electronic Systems, ICSES 2016, Kraków, Poland, September 5-7 2016,
    Full textEndNoteCitation
  15. Jakub Stankowski, Tomasz Grajek, Damian Karwowski, Krzysztof Klimaszewski, Olgierd Stankiewicz, Krzysztof Wegner,
    Computational complexity tradeoffs in HEVC motion estimation,
    International Conference on Signals and Electronic Systems, ICSES 2016, Kraków, Poland, September 5-7 2016, pp. 124-128, ISBN: 978-1-5090-2667-8,
    Full textEndNoteCitationDOI
  16. Olgierd Stankiewicz, Krzysztof Wegner, Marek Domański,
    Depth estimation based on maximization of A posteriori probability,
    International Conference on Computer Vision and Graphics ICCVG 2016, Warsaw, Poland, 19-21 September 2016,
    Full textEndNoteCitation
  17. Jakub Stankowski, Damian Karwowski, Krzysztof Wegner, Olgierd Stankiewicz, Krzysztof Klimaszewski, Tomasz Grajek,
    Analysis of CABAC context models efficiency in the HEVC,
    57th International Symposium ELMAR-2015, Zadar, Croatia, 28-30 September 2015, pp. 217-220, ISBN: 978-953-184-209-9,
    Full textEndNoteCitationDOI
  18. Olgierd Stankiewicz, Marek Domański, Krzysztof Wegner,
    Estimation of Temporally-Consistent Depth Maps from Video with Reduced Noise,
    3DTV Conference: The True Vision-Capture, Transmission and Display of 3D Video, 3DTV- Con 2015, Lisbon, Portugal, 8-10 July 2015,
    Full textEndNoteCitation
  19. Marek Domański, Jacek Konieczny, Maciej Kurc, Adam Łuczak, Jakub Siast, Olgierd Stankiewicz, Krzysztof Wegner,
    Fast Depth Estimation on Mobile Platforms and FPGA Devices,
    3DTV Conference: The True Vision-Capture, Transmission and Display of 3D Video, 3DTV- Con 2015, Lisbon, Portugal, 8-10 July 2015,
    Full textEndNoteCitation
  20. Krzysztof Wegner, Olgierd Stankiewicz, Marek Domański,
    Fast view synthesis using platelet based depth representation,
    21st International Conference on Systems, Signals and Image Processing, IWSSIP 2014, Dubrovnik, Croatia, 12-15 May 2014,
    Full textEndNoteCitation
  21. Krzysztof Wegner, Olgierd Stankiewicz, Marek Domański,
    Occlusion Handling in Depth Estimation from Multiview Video,
    International Conference on Signals and Electronic Systems, ICSES 2014, Poznań, Poland, 11-13 September 2014,
    Full textEndNoteCitation
  22. Jakub Stankowski, Damian Karwowski, Tomasz Grajek, Krzysztof Wegner, Jakub Siast, Krzysztof Klimaszewski, Olgierd Stankiewicz, Marek Domański,
    Bitrate Distribution of Syntax Elements in the HEVC Encoded Video,
    International Conference on Signals and Electronic Systems, ICSES 2014, Poznań, Poland, 11-13 September 2014, ISBN: 978-1-4799-7009-4,
    Full textEndNoteCitationDOI
  23. Jakub Stankowski, Tomasz Grajek, Damian Karwowski, Krzysztof Klimaszewski, Olgierd Stankiewicz, Krzysztof Wegner, Marek Domański,
    Analysis of frame partitioning in HEVC,
    Lecture Notes in Computer Science, Proceedings of International Conference on Computer Vision and Graphics ICCVG 2014, Warsaw, Poland, 15-17 September 2014, pp. 602-609,
    Full textEndNoteCitation
  24. Olgierd Stankiewicz, Krzysztof Wegner, Marek Domański,
    Nonlinear depth representation for 3D video coding,
    IEEE International Conference on Image Processing ICIP 2013, Melbourne, Australia, 15-18 September 2013, pp. 1752-1756, ISBN: 978-1-4799-2341-0,
    Full textEndNoteCitation
  25. Maciej Kurc, Olgierd Stankiewicz, Marek Domański,
    Depth map inter-view consistency refinement for multiview video,
    29th Picture Coding Symposium, PCS 2012, Kraków, Poland, 7-9 May 2012, pp. 137-140,
    Full textEndNoteCitationDOI
  26. Sandra Cancino-Suarez, Krzysztof Klimaszewski, Olgierd Stankiewicz, Marek Domański,
    Enhancement of Stereoscopic Depth Estimation by the Use of Motion Information,
    44th IEEE Southeastern Symposium on System Theory, Jacksonville, FL, USA, 11-13 March 2012, pp. 94-98,
    Full textEndNoteCitation
  27. Jakub Stankowski, Marek Domański, Olgierd Stankiewicz, Jacek Konieczny, Jakub Siast, Krzysztof Wegner,
    Extensions of the HEVC Technology for Efficient Multiview Video Coding,
    19th IEEE International Conference on Image Processing (ICIP 2012), Orlando, Florida, U.S.A., 30 September - 3 October 2012, pp. 1317-1320, ISSN: 1522-4880,
    Full textEndNoteCitationDOI
  28. Marek Domański, Jacek Konieczny, Maciej Kurc, Robert Ratajczak, Jakub Siast, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    3D video compression by coding of disoccluded regions,
    19th IEEE International Conference on Image Processing (ICIP 2012), Orlando, Florida, U.S.A., 30 September - 3 October 2012, pp. 1317-1320,
    Full textEndNoteCitationDOI
  29. Olgierd Stankiewicz, Marek Domański, Krzysztof Wegner,
    Stereoscopic Depth Refinement by Mid-Level Hypothesis,
    IEEE International Conference on Multimedia and Expo, Singapore, Singapore, 19-23 July 2010,
    Full textEndNoteCitation
  30. Krzysztof Wegner, Olgierd Stankiewicz,
    Generation of temporally consistent depth maps using noise removal from video,
    Lecture Notes in Computer Science, Proceedings of International Conference on Computer Vision and Graphics ICCVG 2010, 20-22 September 2010,
    Full textEndNoteCitation
  31. Krzysztof Wegner, Olgierd Stankiewicz, Marek Domański,
    Stereoscopic depth estimation using fuzzy segment matching,
    28th Picture Coding Symposium, PCS 2010, Nagoya, Japan, 8-10 December 2010, pp. 1-4,
    Full textEndNoteCitation
  32. Krzysztof Wegner, Olgierd Stankiewicz, Marek Domański,
    Error Concealment for MVC and 3D Video Coding,
    28th Picture Coding Symposium, PCS 2010, Nagoya, Japan, 8-10 December 2010, pp. 1-4,
    Full textEndNoteCitation
  33. Marta Stępniewska, Olgierd Stankiewicz, Adam Łuczak, Jakub Siast,
    Embedded debugging for NoCs,
    17th International Conference on Mixed Design of Integrated Circuits and Systems, Wrocław, Poland, 24-26 June 2010,
    Full textEndNoteCitation
  34. Marek Domański, Krzysztof Klimaszewski, Jacek Konieczny, Maciej Kurc, Adam Łuczak, Olgierd Stankiewicz, Krzysztof Wegner,
    An experimental Free-view Television System,
    1st International Conference on Image Processing & Communications (IPC), Bydgoszcz, Polska, September 2009, pp. 175-184,
    Full textEndNoteCitation
  35. Krzysztof Wegner, Olgierd Stankiewicz,
    Similarity measures for depth estimation,
    3DTV-Conference 2009 The True Vision Capture, Transmission and Display of 3D Video, Potsdam, Germany, 4-6 May 2009,
    Full textEndNoteCitation
  36. Olgierd Stankiewicz, Krzysztof Wegner,
    A hybrid technique for stereoscopic depth estimation in video,
    International Conference on Signals and Electronic Systems, Kraków, Poland, 14-17 September 2008, pp. 209-2012,
    EndNoteCitationDOI
  37. Adam Łuczak, Paweł Garstecki, Olgierd Stankiewicz, Marta Stępniewska,
    Network-On-Chip Based Architecture of H. 264 Video Decoder,
    International Conference on Signals and Electronic Systems, Krakow, Poland, 14-17 September 2008,
    Full textEndNoteCitation
  38. Olgierd Stankiewicz, Adam Łuczak, Antoni Roszak,
    Temporal noise reduction for preprocessing of video streams in monitoring systems,
    International Conference on Signals and Electronic Systems ICSES'06, Łódź, 18-20 września 2006, pp. 231-234,
    EndNoteCitation

International conferences - standardization

  1. Krzysztof Wegner, Tomasz Grajek, Adam Grzelka, Mateusz Lorkiewicz, Robert Ratajczak, Olgierd Stankiewicz, Jakub Stankowski, Hubert Żabiński, Marek Domański,
    Depth Estimation Reference Software extension for lightfield images,
    ISO/IEC JTC1/SC29/WG11 MPEG2019, m46126, Marrakech, Morocco, 13-19 January 2019,
    Full textEndNoteCitation
  2. Marek Domański, Olgierd Stankiewicz, Gwangsoon Lee, Jeongil Seo, Adrian Dziembowski, Dawid Mieloch, Krzysztof Wegner,
    Depth estimation for omnidirectional video with various representations,
    ISO/IEC JTC1/SC29/WG11 MPEG2019, m46124, Marrakech, Morocco, 13-19 January 2019,
    Full textEndNoteCitation
  3. Krzysztof Wegner, Olgierd Stankiewicz, Tomasz Grajek,
    Multiview compression of lightfield images,
    ISO/IEC JTC1/SC29/WG11 MPEG2018, M42309, San Diego, USA, 16-20 April 2018,
    Full textEndNoteCitation
  4. Michał Rzyp, Dawid Olejniczak, Marek Domański, Tomasz Grajek, Olgierd Stankiewicz, Krzysztof Wegner,
    Omnidirectional lightfield test image “Poznan_Lab_360”,
    ISO/IEC JTC1/SC29/WG11 MPEG2018, M42307, San Diego, USA, 16-20 April 2018,
    Full textEndNoteCitation
  5. Dominika Łosiewicz, Tomasz Grajek, Krzysztof Wegner, Adam Grzelka, Olgierd Stankiewicz, Marek Domański,
    360 degree test image with depth,
    ISO/IEC JTC1/SC29/WG11 MPEG2018, M41991, Gwangju, South Korea, 22-26 January 2018,
    Full textEndNoteCitation
  6. Marek Domański, Dominika Łosiewicz, Tomasz Grajek, Olgierd Stankiewicz, Krzysztof Wegner, Adrian Dziembowski, Dawid Mieloch,
    Extended VSRS for 360 degree video,
    ISO/IEC JTC1/SC29/WG11 MPEG2018, M41990, Gwangju, South Korea, 22-26 January 2018,
    Full textEndNoteCitation
  7. Krzysztof Wegner, Olgierd Stankiewicz, Tomasz Grajek, Marek Domański,
    Depth map formats used within MPEG 3D frameworks,
    ISO/IEC JTC1/SC29/WG11 MPEG2017, M40019, Geneva, Switzerland, 16-20 January 2017,
    Full textEndNoteCitation
  8. Jarosław Samelak, Olgierd Stankiewicz, Marek Domański,
    Do we need multiview profiles for future video coding generations?,
    ISO/IEC JTC1/SC29/WG11 Joint Video Exploration Team (JVET), JVET_H0044, Macao, China, October 2017,
    Full textEndNoteCitation
  9. Olgierd Stankiewicz, Krzysztof Wegner, Marek Domański,
    Depth estimation with enhanced temporal consistency,
    ISO/IEC JTC1/SC29/WG11 MPEG2015, M37233, Geneva, Switzerland, 15-23 October 2015,
    Full textEndNoteCitation
  10. Olgierd Stankiewicz, Marek Domański, Krzysztof Wegner,
    Noise in 3D video sequences,
    ISO/IEC JTC 1/SC 29/WG 11, m34305, Sapporo, Japan, 7-11 July 2014,
    Full textEndNoteCitation
  11. Krzysztof Wegner, Olgierd Stankiewicz,
    DERS Software Manual,
    ISO/IEC JTC 1/SC 29/WG 11, M34302, Sapporo, Japan, 7-11 July 2014,
    Full textEndNoteCitation
  12. Krzysztof Wegner, Olgierd Stankiewicz,
    EE1 results on depth estimation for Dog sequence,
    ISO/IEC JTC 1/SC 29/WG 11, M32250, San Jose, USA, 13-17 January 2014,
    Full textEndNoteCitation
  13. Krzysztof Wegner, Olgierd Stankiewicz, Masayuki Tanimoto, Marek Domański,
    Enhanced View Synthesis Reference Software (VSRS) for Free-viewpoint television,
    JCT-3V (ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11), MPEG_M31520, Geneva, Switzerland, 25 October-1 November 2013,
    Full textEndNoteCitation
  14. Olgierd Stankiewicz, Krzysztof Wegner, Masayuki Tanimoto, Marek Domański,
    Enhanced Depth Estimation Reference Software (DERS) for Free-viewpoint Television,
    JCT-3V (ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11), MPEG_M31518, Geneva, Switzerland, 25 October-1 November 2013,
    Full textEndNoteCitation
  15. Olgierd Stankiewicz, Krzysztof Wegner, Marek Domański,
    AHG14: Optimized QP/QD curie for 3D coding with half and full resolution depth maps,
    Joint Collaborative Team on 3D Video Coding Extension Development of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11, 5th Meeting, JTC3V-E0269, Vienna, Austria, 27 July – 02 August 2013,
    Full textEndNoteCitation
  16. Krzysztof Wegner, Olgierd Stankiewicz, Marek Domański,
    AHG14 Comparison of half resolution depth map coding versus full resolution depth map coding in 3D-ATM,
    Joint Collaborative Team on 3D Video Coding Extension Development of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11, 4th Meeting, JTC3V-D0080, Incheon, Korea, 20–26 April 2013,
    Full textEndNoteCitation
  17. Tomasz Grajek, Olgierd Stankiewicz, Krzysztof Wegner,
    Correlation analysis between MOS data collected on stereoscopic and autostereoscopic displays,
    Joint Collaborative Team on 3D Video Coding Extension Development of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11, 3rd Meeting, JCT3V-C0202, Geneva, Switzerland, 17-23 January 2013,
    Full textEndNoteCitation
  18. Olgierd Stankiewicz, Krzysztof Wegner,
    3D-CE7.a Cross check of Improved Nonlinear Depth Representation performed by Poznan University of Technology,
    Joint Collaborative Team on 3D Video Coding Extension Development of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11, 3rd Meeting, JCT3V-C0166, Geneva, Switzerland, 17-23 January 2013,
    Full textEndNoteCitation
  19. Krzysztof Wegner, Olgierd Stankiewicz,
    Results of subjective evaluation in 3DV-CE2,
    ISO/IEC JTC1/SC29/WG11 MPEG 2012, m25244, Geneva, Switzerland, 30 April-4 May 2012,
    Full textEndNoteCitation
  20. Krzysztof Wegner, Olgierd Stankiewicz, Jakub Siast,
    3D-CE2h results on Nonlinear Depth Representation,
    ISO/IEC JTC1/SC29/WG11 MPEG 2012, m25022, Geneva, Switzerland, 30 April-4 May 2012,
    Full textEndNoteCitation
  21. Olgierd Stankiewicz, Krzysztof Wegner, Jakub Siast,
    3D-CE2a results on Nonlinear Depth Representation,
    ISO/IEC JTC1/SC29/WG11 MPEG 2012, m25017, Geneva, Switzerland, 30 April-4 May 2012,
    Full textEndNoteCitation
  22. Olgierd Stankiewicz, Krzysztof Wegner, Marek Domański,
    Nonlinear depth representation – extended results,
    ISO/IEC JTC1/SC29/WG11 MPEG 2011, /m23791, San Jose, USA, 6-10 February 2012,
    Full textEndNoteCitation
  23. Olgierd Stankiewicz, Krzysztof Wegner,
    Cross- check of improved nonlinear depth representation (3D-ATM),
    Joint Collaborative Team on 3D Video Coding Extension Development of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11, B0186, Shanghai, China, 15-19 October 2012,
    Full textEndNoteCitation
  24. Olgierd Stankiewicz, Krzysztof Wegner,
    3D-HEVC with reduced resolution of depth,
    Joint Collaborative Team on 3D Video Coding Extension Development of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11, B0183, Shanghai, China, 15-19 October 2012,
    Full textEndNoteCitation
  25. Olgierd Stankiewicz, Krzysztof Wegner, Marek Domański,
    3D-HEVC HLS on depth definition,
    Joint Collaborative Team on 3D Video Coding Extension Development of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11, B0164, Shanghai, China, 15-19 October 2012,
    Full textEndNoteCitation
  26. Krzysztof Wegner, Olgierd Stankiewicz,
    Additional Cross Check of 3D-CE7.h Results on Global Depth and View Prediction of NICT by Poznan,
    Joint Collaborative Team on 3D Video Coding Extension Development of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11, a0168, Stockholm, Sweden, 16-20 July 2012,
    Full textEndNoteCitation
  27. Jakub Siast, Olgierd Stankiewicz, Krzysztof Wegner, Marek Domański,
    Independent intra-period coding in 3D-HTM,
    Joint Collaborative Team on 3D Video Coding Extension Development of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11, a0091, Stockholm, Sweden, 16-20 July 2012,
    Full textEndNoteCitation
  28. Olgierd Stankiewicz, Krzysztof Wegner, Marek Domański,
    Impact of View Synthesis Optimization (VSO) on depth quality,
    Joint Collaborative Team on 3D Video Coding Extension Development of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11, a0090, Stockholm, Sweden, 16-20 July 2012,
    Full textEndNoteCitation
  29. Krzysztof Wegner, Olgierd Stankiewicz,
    Improved depth estimation with advanced occlusion handling,
    ISO/IEC JTC1/SC29/WG11 MPEG 2011/M21365, m21365, Torino, Italy, 18-22 July 2011,
    Full textEndNoteCitation
  30. Krzysztof Wegner, Olgierd Stankiewicz, Marek Domański,
    3DV/FTV EE4 report on Poznan Street and Poznan CarPark sequences,
    ISO/IEC JTC1/SC29/WG11 MPEG 2011/M20192, m20192, Genewa, Switzerland, 21-25 March 2011,
    Full textEndNoteCitation
  31. Krzysztof Klimaszewski, Krzysztof Wegner, Olgierd Stankiewicz, Marek Domański,
    3DV/FTV EE4 report on Poznan Street sequence,
    ISO/IEC JTC1/SC29/WG11 MPEG 2011/M19392, m19392, Daegu, South Korea, 24-28 January 2011,
    EndNoteCitation
  32. Marek Domański, Tomasz Grajek, Damian Karwowski, Krzysztof Klimaszewski, Jacek Konieczny, Maciej Kurc, Adam Łuczak, Robert Ratajczak, Jakub Siast, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    Multiview HEVC – experimental results,
    Joint Collaborative Team on Video Coding (JCT-VC) of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11, MPEG 2011 / M22147, Geneva, Switzerland, 28 November - 02 December 2011,
    Full textEndNoteCitation
  33. Krzysztof Wegner, Olgierd Stankiewicz, Marek Domański,
    Input on Call for Proposals on 3D Video Coding document,
    ISO/IEC JTC1/SC29/WG11 MPEG 2010/M17900, m17900, Genewa, Szwajcaria, July 2010,
    Full textEndNoteCitation
  34. Olgierd Stankiewicz, Krzysztof Wegner, Menno Wildeboer,
    A soft – segmentation matching in Depth Estimation Reference Software (DERS) 5.0,
    ISO/IEC JTC1/SC29/WG11 MPEG 2009/M17049, m17049, Xian, China, October 2009,
    Full textEndNoteCitation
  35. Krzysztof Wegner, Olgierd Stankiewicz,
    3DV/FTV EE1 and EE2 results on Alt Moabit sequence,
    ISO/IEC JTC 1/SC 29/WG 11 MPEG 2008, M15832, Busan, South Korea, October 2008, pp. 1-4,
    Full textEndNoteCitation
  36. Krzysztof Wegner, Olgierd Stankiewicz,
    Depth Map Estimation Software version 3,
    ISO/IEC JTC 1/SC 29/WG 11 MPEG 2008, M15540, Hannover, Germany, July 2008, pp. 1-4,
    Full textEndNoteCitation
  37. Krzysztof Wegner, Olgierd Stankiewicz,
    Depth Map Estimation Software version 2,
    ISO/IEC JTC 1/SC 29/WG 11 MPEG 2008, M15338, Archamps, France, April 2008, pp. 1-4,
    Full textEndNoteCitation
  38. Krzysztof Wegner, Olgierd Stankiewicz,
    Depth Map Estimation Software version,
    ISO/IEC JTC 1/SC 29/WG 11 MPEG 2008, M15175, Antalya, Turkey, January 2008, pp. 1-4,
    Full textEndNoteCitation

National journals

  1. Olgierd Stankiewicz, Krzysztof Wegner, Tomasz Grajek, Marek Domański,
    Nowe media immersyjne,
    Przegląd Telekomunikacyjny, Vol. 91, No. 6, 2018, pp. 397-400, ISSN: 1230-3496,
    Full textEndNoteCitationDOI

National conferences

  1. Olgierd Stankiewicz, Krzysztof Wegner,
    System telewizji stereowizyjnej z wyznaczaniem mapy głębi,
    Krajowa Konferencja Radiokomunikacji, Radiofonii i Telewizji KKRRiT 2008, Wrocław, Poland, April 2008,
    Full textEndNoteCitation

Patents & Applications

  1. Jacek Konieczny, Marek Domański, Jakub Siast, Adam Łuczak, Olgierd Stankiewicz, Krzysztof Wegner,
    Image processing apparatus and method,
    Patent office: USPTO, Status: granted,
    Application number: US 15/860930, Filling date: 03.01.2018,
    Publication number: US 2018/0182119, Publication date: 28.06.2018,
    Patent number: US 10593056, Date of Patent: 17.03.2020,
    EndNoteCitation
  2. Jacek Konieczny, Marek Domański, Olgierd Stankiewicz, Krzysztof Wegner, Adam Łuczak,
    Image processing apparatus and method,
    Patent office: USPTO, Status: granted,
    Application number: US 15/860662, Filling date: 03.01.2018,
    Publication number: US 2018/0144491, Publication date: 24.05.2018,
    Patent number: US 10504234, Date of Patent: 10.12.2019,
    EndNoteCitation
  3. Marek Domański, Tomasz Grajek, Damian Karwowski, Krzysztof Klimaszewski, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    A system and a method for disoccluded region coding in a multiview video data stream,
    Patent office: USPTO, Status: granted,
    Application number: US 14/753010, Filling date: 29.06.2015,
    Publication number: US 2016/0381390, Publication date: 29.12.2016,
    Patent number: US 9992514, Date of Patent: 05.06.2018,
    EndNoteCitation
  4. Marek Domański, Tomasz Grajek, Damian Karwowski, Krzysztof Klimaszewski, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    A system and a method for depth-image-based rendering,
    Patent office: USPTO, Status: granted,
    Application number: US 14/753015, Filling date: 29.06.2015,
    Publication number: US 2016/0379341, Publication date: 29.12.2016,
    Patent number: US 9582859, Date of Patent: 28.02.2017,
    EndNoteCitation
  5. Marek Domański, Tomasz Grajek, Damian Karwowski, Krzysztof Klimaszewski, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    A method for predictive coding of depth maps and a depth map encoder,
    Patent office: USPTO, Status: granted,
    Application number: US 14/753015, Filling date: 29.06.2015,
    Publication number: U S2016/0381387, Publication date: 29.12.2016,
    Patent number: US 9848205, Date of Patent: 19.12.2017,
    EndNoteCitation
  6. Marek Domański, Tomasz Grajek, Damian Karwowski, Krzysztof Klimaszewski, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    A system and a method for generating a depth map,
    Patent office: USPTO, Status: granted,
    Application number: US 14/665004, Filling date: 23.03.2015,
    Publication number: US 2016/0275691, Publication date: 22.09.2016,
    Patent number: US 9646385, Date of Patent: 09.05.2017,
    EndNoteCitation
  7. Marek Domański, Tomasz Grajek, Damian Karwowski, Krzysztof Klimaszewski, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    A system and a method for disoccluded region coding in a multiview video data stream,
    Patent office: EPO, Status: granted,
    Application number: EP 15173955.4, Filling date: 26.06.2015,
    Publication number: EP 3110156A1, Publication date: 28.12.2016,
    Patent number: EP 3110156, Date of Patent: 14.03.2018,
    Validated in: PL, DE, FR, GB,
    EndNoteCitation
  8. Marek Domański, Tomasz Grajek, Damian Karwowski, Krzysztof Klimaszewski, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    A system and a method for depth-image-based rendering,
    Patent office: EPO, Status: granted,
    Application number: EP 15461540.5, Filling date: 25.06.2015,
    Publication number: EP 3110149A1, Publication date: 28.12.2016,
    Patent number: EP 3110149, Date of Patent: 02.01.2019,
    Validated in: PL, DE, FR, GB,
    EndNoteCitation
  9. Marek Domański, Tomasz Grajek, Damian Karwowski, Krzysztof Klimaszewski, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    A method for predictive coding of depth maps and a depth map encoder,
    Patent office: EPO, Status: granted,
    Application number: EP 15461541.3, Filling date: 25.06.2015,
    Publication number: EP 3110155A1, Publication date: 28.12.2016,
    Patent number: EP 3110155, Date of Patent: 21.06.2017,
    Validated in: PL, DE, FR, GB,
    EndNoteCitation
  10. Jacek Konieczny, Marek Domański, Jakub Siast, Adam Łuczak, Olgierd Stankiewicz, Krzysztof Wegner,
    An image processing apparatus and method,
    Patent office: EPO, Status: granted,
    Application number: EP 15741506.8, Filling date: 03.07.2015,
    Publication number: EP 3304489, Publication date: 11.04.2018,
    Patent number: EP 3304489, Date of Patent: 17.04.2019,
    EndNoteCitation
  11. Jacek Konieczny, Marek Domański, Olgierd Stankiewicz, Krzysztof Wegner, Adam Łuczak,
    An image processing apparatus and method,
    Patent office: EPO, Status: granted,
    Application number: EP 15741505.0, Filling date: 03.07.2015,
    Publication number: EP 3304488, Publication date: 11.04.2018,
    Patent number: EP 3304488, Date of Patent: 01.05.2019,
    EndNoteCitation
  12. Marek Domański, Krzysztof Klimaszewski, Jacek Konieczny, Maciej Kurc, Robert Ratajczak, Jakub Siast, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    Image coding method,
    Patent office: USPTO, Status: granted,
    Application number: US 13/680652, Filling date: 19.11.2012,
    Publication number: US 2013/0129235A1, Publication date: 23.05.2013,
    Patent number: US 8761527, Date of Patent: 24.06.2014,
    EndNoteCitation

Dissertations

  1. Olgierd Stankiewicz,
    Stereoscopic depth map estimation and coding techniques for multiview video systems,
    PhD Dissertation at Poznan University of Technology, Faculty of Electronics and Telecommunications, 2014,
    Supervisor: prof. dr hab. inż. Marek Domański, Reviewers: prof. Mirosław Bober, prof. dr hab. inż. Paweł Strumiłło,
    Abstract (pol)Full text (eng)EndNoteCitation

2022

2021

  1. Mateusz Lorkiewicz, Olgierd Stankiewicz, Marek Domański, Hsueh-Ming Hang, Wen-Hsiao Peng,
    Fast Selection of INTRA CTU Partitioning in HEVC Encoders using Artificial Neural Networks,
    Signal Processing Symposium 2021 SPSympo, Łódź, Poland, 20-23 Sept. 2021,
    Full textEndNoteCitationDOI

2020

  1. Krzysztof Wegner, Jakub Stankowski, Olgierd Stankiewicz, Hubert Żabiński, Krzysztof Klimaszewski, Tomasz Grajek,
    High Frame-Rate Virtual View Synthesis Based on Low Frame-Rate Input,
    IEEE 22nd International Workshop on Multimedia Signal Processing, MMSP 2020, Tampere, Finland, 21-24 September 2020,
    Full textEndNoteCitation

2019

  1. Adrian Dziembowski, Dawid Mieloch, Olgierd Stankiewicz, Marek Domański,
    Virtual View Synthesis for 3DoF+ Video ,
    34th Picture Coding Symposium, PCS 2019, Ningbo, China, 12-15 November 2019,
    Full textEndNoteCitation

  2. Krzysztof Wegner, Tomasz Grajek, Adam Grzelka, Mateusz Lorkiewicz, Robert Ratajczak, Olgierd Stankiewicz, Jakub Stankowski, Hubert Żabiński, Marek Domański,
    Depth Estimation Reference Software extension for lightfield images,
    ISO/IEC JTC1/SC29/WG11 MPEG2019, m46126, Marrakech, Morocco, 13-19 January 2019,
    Full textEndNoteCitation

  3. Marek Domański, Olgierd Stankiewicz, Gwangsoon Lee, Jeongil Seo, Adrian Dziembowski, Dawid Mieloch, Krzysztof Wegner,
    Depth estimation for omnidirectional video with various representations,
    ISO/IEC JTC1/SC29/WG11 MPEG2019, m46124, Marrakech, Morocco, 13-19 January 2019,
    Full textEndNoteCitation

  4. Marek Domański, Tomasz Grajek, Caroline Conti, Carl James Debono, Sérgio M. M. de Faria, Peter Kovacs, Luís F. R. Lucas, Paulo Nunes, Cristian Perra, Nuno M. M. Rodrigues, Mårten Sjöström, Luís Ducla Soares, Olgierd Stankiewicz,
    Chapter: Emerging Imaging Technologies: Trends and Challenges,
    Book: 3D Visual Content Creation, Coding and Delivery, Editors: Pedro Amado Assunção, Atanas Gotchev,
    Signals and Communication Technology: Springer International, 2019, pp. 5-39, ISBN: 978-3-319-77841-9, ISSN: 1860-4862,
    EndNoteCitationDOI

2018

  1. Jacek Konieczny, Marek Domański, Jakub Siast, Adam Łuczak, Olgierd Stankiewicz, Krzysztof Wegner,
    Image processing apparatus and method,
    Patent office: USPTO, Status: granted,
    Application number: US 15/860930, Filling date: 03.01.2018,
    Publication number: US 2018/0182119, Publication date: 28.06.2018,
    Patent number: US 10593056, Date of Patent: 17.03.2020,
    EndNoteCitation

  2. Jacek Konieczny, Marek Domański, Olgierd Stankiewicz, Krzysztof Wegner, Adam Łuczak,
    Image processing apparatus and method,
    Patent office: USPTO, Status: granted,
    Application number: US 15/860662, Filling date: 03.01.2018,
    Publication number: US 2018/0144491, Publication date: 24.05.2018,
    Patent number: US 10504234, Date of Patent: 10.12.2019,
    EndNoteCitation

  3. Olgierd Stankiewicz,
    Chapter: Noise in Multiview Videos,
    Book: Noise Reduction: Methods, Applications and Technology, Editors: Marc Farrow,
    Acoustics Research and Technology: Nova Science Publishers, 2018, pp. 1-33, ISBN: 978-1-53613-542-8,
    EndNoteCitation

  4. Olgierd Stankiewicz, Gauthier Lafruit, Marek Domański,
    Chapter: Multiview video: Acquisition, processing, compression and virtual view rendering,
    Book: Image and Video Processing and Analysis and Computer Vision, Editors: Dr. Rama Chellappa , Dr. Sergios Theodoridis,
    Academic Press Library in Signal Processing: Vol. 6, Academic Press, January 2018, pp. 3-74,
    EndNoteCitationDOI

  5. Krzysztof Wegner, Olgierd Stankiewicz, Tomasz Grajek,
    Multiview compression of lightfield images,
    ISO/IEC JTC1/SC29/WG11 MPEG2018, M42309, San Diego, USA, 16-20 April 2018,
    Full textEndNoteCitation

  6. Michał Rzyp, Dawid Olejniczak, Marek Domański, Tomasz Grajek, Olgierd Stankiewicz, Krzysztof Wegner,
    Omnidirectional lightfield test image “Poznan_Lab_360”,
    ISO/IEC JTC1/SC29/WG11 MPEG2018, M42307, San Diego, USA, 16-20 April 2018,
    Full textEndNoteCitation

  7. Dominika Łosiewicz, Tomasz Grajek, Krzysztof Wegner, Adam Grzelka, Olgierd Stankiewicz, Marek Domański,
    360 degree test image with depth,
    ISO/IEC JTC1/SC29/WG11 MPEG2018, M41991, Gwangju, South Korea, 22-26 January 2018,
    Full textEndNoteCitation

  8. Marek Domański, Dominika Łosiewicz, Tomasz Grajek, Olgierd Stankiewicz, Krzysztof Wegner, Adrian Dziembowski, Dawid Mieloch,
    Extended VSRS for 360 degree video,
    ISO/IEC JTC1/SC29/WG11 MPEG2018, M41990, Gwangju, South Korea, 22-26 January 2018,
    Full textEndNoteCitation

  9. Olgierd Stankiewicz, Krzysztof Wegner, Tomasz Grajek, Marek Domański,
    Nowe media immersyjne,
    Przegląd Telekomunikacyjny, Vol. 91, No. 6, 2018, pp. 397-400, ISSN: 1230-3496,
    Full textEndNoteCitationDOI

  10. Yasir Al-Obaidi, Tomasz Grajek, Olgierd Stankiewicz, Marek Domański,
    Bitrate Allocation for Multiview Video Plus Depth Simulcast Coding,
    25th International Conference on Systems, Signals and Image Processing, Maribor, Slovenia, 20-22 June 2018,
    Full textEndNoteCitation

  11. Olgierd Stankiewicz, Krzysztof Wegner, Damian Karwowski, Jakub Stankowski, Krzysztof Klimaszewski, Tomasz Grajek,
    HEVC encoding assisted with noise reduction,
    International Journal of Electronics and Telecommunications, Vol. 64, No. 3, Electronics and Telecommunications Committee of Polish Academy of Sciences, Warsaw, 2018, pp. 285-292, ISSN: 0867-6747,
    Full textEndNoteCitationDOI

    Abstract

    Optimization of encoding process in video compression is an important research problem, especially in the case of modern, sophisticated compression technologies. In this paper, we consider HEVC, for which a novel method for selection of the encoding modes is proposed. By the encoding modes we mean e.g. coding block structure, prediction types and motion vectors. The proposed selection is done basing on noise-reduced version of the input sequence, while the information about the video itself, e.g. transform coefficients, is coded basing on the unaltered input. The proposed method involves encoding of two versions of the input sequence. Further, we show realization proving that the complexity is only negligibly higher than complexity of a single encoding. The proposal has been implemented in HEVC reference software from MPEG and tested experimentally. The results show that the proposal provides up to 1.5% bitrate reduction while preserving the same quality of a decoded video.

  12. Olgierd Stankiewicz, Marek Domański,
    Depth Map Estimation based on Maximum a Posteriori Probability,
    IEIE Transactions on Smart Processing and Computing, Vol. 7, No. 1, 28th February 2018, pp. 49-61,
    Full textEndNoteCitation

  13. Krzysztof Wegner, Dominika Łosiewicz, Marek Domański, Adrian Dziembowski, Tomasz Grajek, Adam Grzelka, Dawid Mieloch, Robert Ratajczak, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    Real-time virtual navigation provision by simple means,
    International Conference on Signals and Electronic Systems, ICSES 2018, Kraków, Poland, September 10-12 2018,
    EndNoteCitation

    Abstract

    The paper reports the results on virtual navigation in a sports hall. The video data is gathered and processed off-line thus producing the multiview plus depth representation of a scene. This representation is an input to the rendering server. Even a typical PC computer is able to serve a number of users that freely and independently navigate in real - time and watch virtual video. The users are able to navigate in the scene changing the virtual viewpoint and virtual view direction. The service is provided through a webpage, so a viewer does not need to install any software on smartphone, tablet or notebook. The paper discusses the technical solutions together with the rationale for their choice.

  14. Krzysztof Wegner, Dominika Łosiewicz, Tomasz Grajek, Olgierd Stankiewicz, Adrian Dziembowski, Marek Domański,
    Omnidirectional View Synthesis and Test Images,
    International Conference on Signals and Electronic Systems, ICSES 2018, Kraków, Poland, September 10-12 2018,
    Full textEndNoteCitation

    Abstract

    In this paper we introduce an algorithm for omnidirectional virtual view synthesis based on Omnidirectional Video plus Depth (OVD) format. The implementation is done on the basis of View Synthesis Reference Software (VSRS) developed by MPEG of ISO/IEC. Also, we address the problem of lack of benchmark data disallowing objective quality assessment. We present a method for generating test images in OVD representation along with example omnidirectional images and omnidirectional depths, called “Poznan Hall 360”.

  15. Krzysztof Wegner, Olgierd Stankiewicz, Tomasz Grajek, Marek Domański,
    Depth estimation from stereoscopic 360-degree video,
    IEEE International Conference on Image Processing ICIP2018, Athens, Greece, 7-10 October 2018,
    Full textEndNoteCitation

2017

  1. Damian Karwowski, Jakub Stankowski, Krzysztof Klimaszewski, Tomasz Grajek, Krzysztof Wegner, Olgierd Stankiewicz,
    Kodery wizyjne – podstawowe ograniczenia w praktycznym wykorzystaniu,
    Twierdza, Vol. 85, No. 1, 2017, ISSN: 1507-6474,
    EndNoteCitation

    Abstract

    Co 9-10 lat powstaje nowa technika kompresji ruchomego obrazu, która jest około 2-krotnie wydajniejsza niż poprzednia. Daje to możliwość przemysłowego wykorzystania coraz lepszych rozwiązań w zakresie kompresji, mimo że w praktyce wykorzystanie nowych koderów wiąże się z wieloma istotnymi ograniczeniami. O nich właśnie jest ten artykuł.

  2. Krzysztof Wegner, Olgierd Stankiewicz, Tomasz Grajek, Marek Domański,
    Depth map formats used within MPEG 3D frameworks,
    ISO/IEC JTC1/SC29/WG11 MPEG2017, M40019, Geneva, Switzerland, 16-20 January 2017,
    Full textEndNoteCitation

  3. Jarosław Samelak, Olgierd Stankiewicz, Marek Domański,
    Do we need multiview profiles for future video coding generations?,
    ISO/IEC JTC1/SC29/WG11 Joint Video Exploration Team (JVET), JVET_H0044, Macao, China, October 2017,
    Full textEndNoteCitation

  4. Marek Domański, Olgierd Stankiewicz, Krzysztof Wegner, Tomasz Grajek,
    Immersive visual media – MPEG-I: 360 video, virtual navigation and beyond,
    IEEE International Conference on Systems, Signals and Image Processing IWSSIP 2017, Poznań, Poland, 22-24 May 2017,
    Full textEndNoteCitation

  5. Olgierd Stankiewicz, Krzysztof Wegner, Damian Karwowski, Jakub Stankowski, Krzysztof Klimaszewski, Tomasz Grajek,
    Encoding mode selection in HEVC with the use of noise reduction,
    IEEE International Conference on Systems, Signals and Image Processing IWSSIP 2017, Poznań, Poland, 22-24 May 2017,
    Full textEndNoteCitation

  6. Dawid Mieloch, Adrian Dziembowski, Adam Grzelka, Olgierd Stankiewicz, Marek Domański,
    Temporal Enhancement of Graph-Based Depth Estimation Method,
    IEEE International Conference on Systems, Signals and Image Processing IWSSIP 2017, Poznań, Poland, 22-24 May 2017,
    Full textEndNoteCitation

  7. Krzysztof Wegner, Damian Karwowski, Krzysztof Klimaszewski, Jakub Stankowski, Olgierd Stankiewicz, Tomasz Grajek,
    Homogenous HEVC video transcoding by transform coefficient removal,
    IEEE International Conference on Systems, Signals and Image Processing IWSSIP 2017, Poznań, Poland, 22-24 May 2017,
    Full textEndNoteCitation

  8. Adrian Dziembowski, Adam Grzelka, Dawid Mieloch, Olgierd Stankiewicz, Marek Domański,
    Enhancing View Synthesis with Image and Depth Map Upsampling,
    IEEE International Conference on Systems, Signals and Image Processing IWSSIP 2017, Poznań, Poland, 22-24 May 2017,
    Full textEndNoteCitation

2016

  1. Damian Karwowski, Krzysztof Klimaszewski, Jakub Stankowski, Krzysztof Wegner, Olgierd Stankiewicz, Tomasz Grajek,
    Transkodowanie obrazu – nieunikniona perspektywa w systemach dozoru wizyjnego,
    Twierdza, Vol. 82, No. 1, 2016, pp. 34-37, ISSN: 1507-6474,
    EndNoteCitation

    Abstract

    Z każdym rokiem możliwości układów obliczeniowych (procesorów, układów scalonych) znacznie się zwiększają. Prawo Moore’a mówi, że moc obliczeniowa układów podwaja się co 18-24 miesiące. Ten dynamiczny wzrost umożliwia praktyczne zastosowanie coraz to nowszych technik kompresji obrazu ruchomego, które zapewniają wyższą efektywność kompresji danych.

  2. Krzysztof Wegner, Damian Karwowski, Jakub Stankowski, Krzysztof Klimaszewski, Olgierd Stankiewicz, Tomasz Grajek,
    Nowa technika optymalizacji działania kodera HEVC,
    Przegląd Telekomunikacyjny, Vol. 88, No. 6, 2016, pp. 237-240, ISSN: 1230-3496,
    Full textEndNoteCitation

    Abstract

    W pracy przedstawiono nową metodą szybkiego wyboru trybu kodowania wewnątrzobrazowego INTRA w koderze standardu HEVC. Podstawą opracowanej metody jest szczegółowa wiedza o częstości wybierania przez koder poszczególnych trybów kodowania wewnątrzobrazowego, w zależności od żądanej prędkości bitowej, rozdzielczości obrazu oraz jakości zakodowanego obrazu. Realizacja programowa opracowanej metody pozwoliła na pokazanie, że można płynnie regulować stopień przyspieszenia kodera i efektywność kodowania za jego pomocą.

  3. Marek Domański, Maciej Bartkowiak, Adrian Dziembowski, Tomasz Grajek, Adam Grzelka, Adam Łuczak, Dawid Mieloch, Jarosław Samelak, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    New results in free-viewpoint television systems for horizontal virtual navigation,
    2016 IEEE International Conference on Multimedia and Expo ICME 2016, Seattle, USA, 11-15 July 2016,
    Full textEndNoteCitation

    Abstract

    The paper presents the concept of a practical free-viewpoint television system with purely optical depth estimation. The system consists of camera modules that contain pairs or triples of cameras together with the respective microphones. The camera modules can be sparsely located in arbitrary positions around a scene. Each camera module is equivalent to a video camera with a depth sensor and microphones. The hardware requirements, the video and audio processing algorithms and the preliminary experimental results are reported. In particular, for such systems, a compression technique is discussed that is more efficient than the new 3D-HEVC technology. A set of new test sequences obtained with the use of camera pairs are presented.

  4. Adrian Dziembowski, Adam Grzelka, Dawid Mieloch, Olgierd Stankiewicz, Krzysztof Wegner, Marek Domański,
    Multiview Synthesis – improved view synthesis for virtual navigation,
    32nd Picture Coding Symposium, PCS 2016, Nuremberg, Germany, December 4-7, 2016,
    Full textEndNoteCitation

    Abstract

    In the paper, we propose a new method for the virtual view synthesis called as Multiview Synthesis. In our approach, virtual views are synthesized using two neighboring real views, but the disoccluded areas are not inpainted, but filled by the information from the further real views – additional views, traditionally not included in the view synthesis. The whole synthesis is performed with triangles rather than with individual pixels. In the proposed Multiview Synthesis, additional steps of adaptive color correction, blurred edge removal and spatial edge blurring are also included. The experimental results show that both the objective and subjective quality of the synthesized views is significantly higher than the quality of views obtained using the state-of-the-art MPEG reference view synthesis software.

  5. Krzysztof Klimaszewski, Tomasz Grajek, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner, Damian Karwowski, Marek Domański,
    Pruning in picture reference list in HEVC,
    ISO/IEC JTC1/SC29/WG11 MPEG2016, M38245, Geneva, Switzerland, 30 May - 03 June 2016,
    Full textEndNoteCitation

    Abstract

    Possibility of selection of a particular reference picture from many previously encoded frames is one of the reasons of significant extension of time necessary for encoding of a video sequence with HEVC. Search of motion vectors within all available reference pictures for every PU (allowed by the HEVC standard) and selecting the best one, significantly enhances coding effectiveness but requires big computational effort leading to long encoding time. A fast method for selection of the best reference picture would be a source of shortening of the encoding time. This documents reports and verifies a method for fast reference picture selection in which reference picture list is pruned basing on the size of the PU under consideration. This way the number of reference picture necessary to look at the during motion vector search is reduced. Foundations of the reported method are the results of statistical analysis of the actual selected reference picture (considered by the encoder as the best in terms of RD) during encoding of the particular PU size.

  6. Jakub Stankowski, Damian Karwowski, Krzysztof Klimaszewski, Krzysztof Wegner, Olgierd Stankiewicz, Tomasz Grajek,
    Analysis of the complexity of the HEVC motion estimation,
    23rd International Conference on Systems, Signals and Image Processing, IWSSIP 2016, Bratislava, Slovakia, 23-25 May 2016, pp. 1-4, ISBN: 978-1-4673-9555-7 , ISSN: 2157-8702,
    Full textEndNoteCitationDOI

    Abstract

    The paper presents analysis and comparison of complexity of selected algorithms of motion estimation used in video compression. With the use of own, highly optimized software implementation the authors explored complexity of the methods applied in the framework of the new High Efficiency Video Compression (HEVC) technology. The influence of many different factors on motion estimation complexity has been deeply studied, including the implementation technique, type of the algorithm, number of processor threads used, kind of metric of blocks similarity. The results obtained allowed to formulate guidelines and conclusions that may be useful for future implementation of motion estimation algorithms in context of HEVC encoders.

  7. Damian Karwowski, Tomasz Grajek, Krzysztof Klimaszewski, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    Chapter: 20 Years of Progress in Video Compression - from MPEG-1 to MPEG-H HEVC. General View on the Path of Video Coding Development,
    Book: Image Processing and Communications Challenges 8, Editors: Ryszard S. Choras,
    Advances in Intelligent Systems and Computing: No. 525, Springer International, 2016, pp. 3-15, ISBN: 978-3-319-47273-7, ISSN: 2194-5375,
    Full textEndNoteCitationDOI

    Abstract

    Compression of moving images has opened unprecedented opportunities of transmission and storage of digital video. Extraordinary performance of today’s video codecs is a result of tens of years of work on the development of methods of data encoding. This paper is an attempt to show this history of development. It highlights the history of individual algorithms of data encoding as well as the evolution of video compression technologies as a whole. With the development of successive technologies also functionalities of codecs were evolving, which make also the topic of the paper. The paper ends the attempt of authors’ forecasting about the future evolution of video compression technologies.

  8. Adrian Dziembowski, Adam Grzelka, Dawid Mieloch, Olgierd Stankiewicz, Marek Domański,
    Depth map upsampling and refinement for FTV systems,
    International Conference on Signals and Electronic Systems, ICSES 2016, Kraków, Poland, September 5-7 2016,
    Full textEndNoteCitation

    Abstract

    In free-viewpoint television, high-quality depth maps are substantial for a virtual view synthesis for free navigation purposes. In this paper, we propose a new method of depth map quality improvement and resolution increase. Our method is intended for low resolution depth maps acquired through estimation using multiview video. The proposed depth map quality improvement is based on segmentation of an acquired high-resolution image. In the estimated depth map, searching for outliers is performed in the neighborhood created from similar segments in the acquired view. Experimental results show high effectiveness of the presented method of depth maps refinement, especially for object edges.

  9. Jakub Stankowski, Tomasz Grajek, Damian Karwowski, Krzysztof Klimaszewski, Olgierd Stankiewicz, Krzysztof Wegner,
    Computational complexity tradeoffs in HEVC motion estimation,
    International Conference on Signals and Electronic Systems, ICSES 2016, Kraków, Poland, September 5-7 2016, pp. 124-128, ISBN: 978-1-5090-2667-8,
    Full textEndNoteCitationDOI

    Abstract

    The paper reports the results of the experiments conducted on the HEVC encoder, regarding the complexity and performance of the motion estimation algorithm. The research focuses on the search range of motion vectors and its influence on the encoding time of the video with the use of a HEVC encoder, as well as on the method for choosing the starting point of the motion estimation algorithm. Performance is measured as the time reduction and Bjontegaard metric bitrate reduction.

  10. Olgierd Stankiewicz, Krzysztof Wegner, Marek Domański,
    Depth estimation based on maximization of A posteriori probability,
    International Conference on Computer Vision and Graphics ICCVG 2016, Warsaw, Poland, 19-21 September 2016,
    Full textEndNoteCitation

    Abstract

    This paper presents a proposal of depth estimation method which employs empirical modeling of cost function based on Maximization of A posteriori Probability (MAP) rule. The proposed method allows for unsupervised depth estimation without a need for usage of arbitrary settings or control parameters, like Smoothing Coefficient in Depth Estimation Reference Software (DERS), which was used as a reference. The attained quality of generated depth maps is comparable to a case when supervised depth estimation is used, and such parameters are manually optimized. In the case when sub-optimal settings of control parameters in supervised depth estimation with DERS is used, the proposed method provides gains of about 2.8dB measured in average PSNR quality of virtual views synthesized with the use of estimated depth maps in the tested sequence set. 1

2015

  1. Marek Domański, Tomasz Grajek, Damian Karwowski, Krzysztof Klimaszewski, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    A system and a method for disoccluded region coding in a multiview video data stream,
    Patent office: USPTO, Status: granted,
    Application number: US 14/753010, Filling date: 29.06.2015,
    Publication number: US 2016/0381390, Publication date: 29.12.2016,
    Patent number: US 9992514, Date of Patent: 05.06.2018,
    EndNoteCitation

  2. Marek Domański, Tomasz Grajek, Damian Karwowski, Krzysztof Klimaszewski, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    A system and a method for depth-image-based rendering,
    Patent office: USPTO, Status: granted,
    Application number: US 14/753015, Filling date: 29.06.2015,
    Publication number: US 2016/0379341, Publication date: 29.12.2016,
    Patent number: US 9582859, Date of Patent: 28.02.2017,
    EndNoteCitation

  3. Marek Domański, Tomasz Grajek, Damian Karwowski, Krzysztof Klimaszewski, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    A method for predictive coding of depth maps and a depth map encoder,
    Patent office: USPTO, Status: granted,
    Application number: US 14/753015, Filling date: 29.06.2015,
    Publication number: U S2016/0381387, Publication date: 29.12.2016,
    Patent number: US 9848205, Date of Patent: 19.12.2017,
    EndNoteCitation

  4. Marek Domański, Tomasz Grajek, Damian Karwowski, Krzysztof Klimaszewski, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    A system and a method for generating a depth map,
    Patent office: USPTO, Status: granted,
    Application number: US 14/665004, Filling date: 23.03.2015,
    Publication number: US 2016/0275691, Publication date: 22.09.2016,
    Patent number: US 9646385, Date of Patent: 09.05.2017,
    EndNoteCitation

  5. Marek Domański, Tomasz Grajek, Damian Karwowski, Krzysztof Klimaszewski, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    A system and a method for disoccluded region coding in a multiview video data stream,
    Patent office: EPO, Status: granted,
    Application number: EP 15173955.4, Filling date: 26.06.2015,
    Publication number: EP 3110156A1, Publication date: 28.12.2016,
    Patent number: EP 3110156, Date of Patent: 14.03.2018,
    Validated in: PL, DE, FR, GB,
    EndNoteCitation

  6. Marek Domański, Tomasz Grajek, Damian Karwowski, Krzysztof Klimaszewski, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    A system and a method for depth-image-based rendering,
    Patent office: EPO, Status: granted,
    Application number: EP 15461540.5, Filling date: 25.06.2015,
    Publication number: EP 3110149A1, Publication date: 28.12.2016,
    Patent number: EP 3110149, Date of Patent: 02.01.2019,
    Validated in: PL, DE, FR, GB,
    EndNoteCitation

  7. Marek Domański, Tomasz Grajek, Damian Karwowski, Krzysztof Klimaszewski, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    A method for predictive coding of depth maps and a depth map encoder,
    Patent office: EPO, Status: granted,
    Application number: EP 15461541.3, Filling date: 25.06.2015,
    Publication number: EP 3110155A1, Publication date: 28.12.2016,
    Patent number: EP 3110155, Date of Patent: 21.06.2017,
    Validated in: PL, DE, FR, GB,
    EndNoteCitation

  8. Jacek Konieczny, Marek Domański, Jakub Siast, Adam Łuczak, Olgierd Stankiewicz, Krzysztof Wegner,
    An image processing apparatus and method,
    Patent office: EPO, Status: granted,
    Application number: EP 15741506.8, Filling date: 03.07.2015,
    Publication number: EP 3304489, Publication date: 11.04.2018,
    Patent number: EP 3304489, Date of Patent: 17.04.2019,
    EndNoteCitation

  9. Jacek Konieczny, Marek Domański, Olgierd Stankiewicz, Krzysztof Wegner, Adam Łuczak,
    An image processing apparatus and method,
    Patent office: EPO, Status: granted,
    Application number: EP 15741505.0, Filling date: 03.07.2015,
    Publication number: EP 3304488, Publication date: 11.04.2018,
    Patent number: EP 3304488, Date of Patent: 01.05.2019,
    EndNoteCitation

  10. Damian Karwowski, Jakub Stankowski, Krzysztof Wegner, Olgierd Stankiewicz, Krzysztof Klimaszewski, Tomasz Grajek,
    HEVC. Nowe rozwiązania dla systemów dozoru wizyjnego,
    Twierdza, Vol. 81, No. 2, 2015, pp. 52-61, ISSN: 1507-6474,
    EndNoteCitation

    Abstract

    Technika HEVC (High Efficiency Video Coding) to nowy pomysł na kompresję obrazów. Jej bardzo wysoka efektywność kodowania obrazów pozwala przewidywać, że w ciągu kilku lat wyprze ona stosowaną obecnie technikę AVC. W efekcie firmy z branży IT będą zmuszone do aktualizacji swoich ofert handlowych i przejścia na nową technikę.

  11. Marek Domański, Adrian Dziembowski, Tomasz Grajek, Adam Grzelka, Łukasz Kowalski, Maciej Kurc, Adam Łuczak, Dawid Mieloch, Robert Ratajczak, Jarosław Samelak, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    Methods of High Efficiency Compression for Transmission of Spatial Representation of Motion Scenes,
    IEEE International Conference on Multimedia and Expo ICME 2015, Torino, Italy, June 29-July 3 2015,
    Full textEndNoteCitation

    Abstract

    The paper reports the hitherto obtained results of the research project that deals with scene representations that are suitable for free navigation around the scene. These scene representations are acquired from a limited number of cameras located around the scene. The project is aimed at the development of an efficient compression technology and the experimental environment for testing such technology. The paper reports some new multiview test sequences with the circular camera arrangement, including the hybrid ones that have been acquired using also the depth sensors. Finally, the paper also briefly reports the recent results of the new compression technology being under development. This technology outperforms the state-of-the-art 3D-HEVC.

  12. Olgierd Stankiewicz, Krzysztof Wegner, Marek Domański,
    Depth estimation with enhanced temporal consistency,
    ISO/IEC JTC1/SC29/WG11 MPEG2015, M37233, Geneva, Switzerland, 15-23 October 2015,
    Full textEndNoteCitation

  13. Jakub Stankowski, Damian Karwowski, Tomasz Grajek, Krzysztof Wegner, Jakub Siast, Krzysztof Klimaszewski, Olgierd Stankiewicz, Marek Domański,
    Analysis of Compressed Data Stream Content in HEVC Video Encoder,
    International Journal of Electronics and Telecommunications, Vol. 61, No. 2, Electronics and Telecommunications Committee of Polish Academy of Sciences, Warsaw, 2015, pp. 121-127, ISSN: 0867-6747,
    Full textEndNoteCitationDOI

    Abstract

    In this paper, a detailed analysis of the content of the bitstream, produced by the HEVC video encoder is presented. With the use of the HM 10.0 reference software the following statistics were investigated: 1) the amount of data in the encoded stream related to individual frame types, 2) the relationship between the value of the QP and the size of the bitstream at the output of the encoder, 3) contribution of individual types of data to I and B frames. The above mentioned aspects have been thoroughly explored for a wide range of target bitrates. The obtained results became the basis for highlighting guidelines that allow for efficient bitrate control in the HEVC encoder.

  14. Krzysztof Wegner, Tomasz Grajek, Damian Karwowski, Jakub Stankowski, Krzysztof Klimaszewski, Olgierd Stankiewicz, Marek Domański,
    Multi-Generation Encoding Using HEVC All Intra Versus JPEG 2000,
    57th International Symposium ELMAR-2015, Zadar, Croatia, 28-30 September 2015, pp. 41-44, ISBN: 978-953-184-209-9,
    Full textEndNoteCitationDOI

    Abstract

    For the new HEVC compression technology, the analysis of accumulation of quality losses in multi-generation coding is still an open problem. In this paper, we describe the results of extensive experiments that demonstrate quality loss accumulation in 300 encoding-decoding cycles using the HEVC codec in the All Intra mode. For consecutive encoding cycles with constant encoder configuration, the coding quality loss decrease much slower than for JPEG 2000. However, for SD resolution, the HEVC intra-only encoder provides lower bitrates than JPEG 2000 with the same video quality. Therefore, even after 300 cycles, the HEVC All Intra usually provides lower bitrates than JPEG 2000 with the same decoded-video quality.

  15. Jakub Stankowski, Damian Karwowski, Krzysztof Wegner, Olgierd Stankiewicz, Krzysztof Klimaszewski, Tomasz Grajek,
    Analysis of CABAC context models efficiency in the HEVC,
    57th International Symposium ELMAR-2015, Zadar, Croatia, 28-30 September 2015, pp. 217-220, ISBN: 978-953-184-209-9,
    Full textEndNoteCitationDOI

    Abstract

    This paper presents detailed analysis of the CABAC efficiency when operating in the HEVC in a number of bits per number of bins manner. The paper reveals what fraction of bit is produced by the CABAC for each and every binary symbols encoded in HEVC. The statistics of bins encoded with a given efficiency are presented for the three types of video data: 1) prediction error of image samples, 2) motion data, and 3) control data.

  16. Olgierd Stankiewicz, Marek Domański, Krzysztof Wegner,
    Estimation of Temporally-Consistent Depth Maps from Video with Reduced Noise,
    3DTV Conference: The True Vision-Capture, Transmission and Display of 3D Video, 3DTV- Con 2015, Lisbon, Portugal, 8-10 July 2015,
    Full textEndNoteCitation

  17. Marek Domański, Jacek Konieczny, Maciej Kurc, Adam Łuczak, Jakub Siast, Olgierd Stankiewicz, Krzysztof Wegner,
    Fast Depth Estimation on Mobile Platforms and FPGA Devices,
    3DTV Conference: The True Vision-Capture, Transmission and Display of 3D Video, 3DTV- Con 2015, Lisbon, Portugal, 8-10 July 2015,
    Full textEndNoteCitation

2014

  1. Olgierd Stankiewicz,
    Stereoscopic depth map estimation and coding techniques for multiview video systems,
    PhD Dissertation at Poznan University of Technology, Faculty of Electronics and Telecommunications, 2014,
    Supervisor: prof. dr hab. inż. Marek Domański, Reviewers: prof. Mirosław Bober, prof. dr hab. inż. Paweł Strumiłło,
    Abstract (pol)Full text (eng)EndNoteCitation

  2. Olgierd Stankiewicz, Marek Domański, Krzysztof Wegner,
    Noise in 3D video sequences,
    ISO/IEC JTC 1/SC 29/WG 11, m34305, Sapporo, Japan, 7-11 July 2014,
    Full textEndNoteCitation

  3. Krzysztof Wegner, Olgierd Stankiewicz,
    DERS Software Manual,
    ISO/IEC JTC 1/SC 29/WG 11, M34302, Sapporo, Japan, 7-11 July 2014,
    Full textEndNoteCitation

  4. Krzysztof Wegner, Olgierd Stankiewicz,
    EE1 results on depth estimation for Dog sequence,
    ISO/IEC JTC 1/SC 29/WG 11, M32250, San Jose, USA, 13-17 January 2014,
    Full textEndNoteCitation

  5. Krzysztof Wegner, Olgierd Stankiewicz, Marek Domański,
    Fast view synthesis using platelet based depth representation,
    21st International Conference on Systems, Signals and Image Processing, IWSSIP 2014, Dubrovnik, Croatia, 12-15 May 2014,
    Full textEndNoteCitation

  6. Krzysztof Wegner, Olgierd Stankiewicz, Marek Domański,
    Occlusion Handling in Depth Estimation from Multiview Video,
    International Conference on Signals and Electronic Systems, ICSES 2014, Poznań, Poland, 11-13 September 2014,
    Full textEndNoteCitation

  7. Jakub Stankowski, Damian Karwowski, Tomasz Grajek, Krzysztof Wegner, Jakub Siast, Krzysztof Klimaszewski, Olgierd Stankiewicz, Marek Domański,
    Bitrate Distribution of Syntax Elements in the HEVC Encoded Video,
    International Conference on Signals and Electronic Systems, ICSES 2014, Poznań, Poland, 11-13 September 2014, ISBN: 978-1-4799-7009-4,
    Full textEndNoteCitationDOI

    Abstract

    The paper focuses on two problems: 1) analysis of bitrate contribution of I and B frames in encoded HEVC data stream, and 2) analysis of distribution of HEVC syntax elements in I and B frames. The relationship between sizes of I and B frames located at a different levels in hierarchical coding scheme was experimentally determined, as well as contribution of HEVC syntax elements in encoded streams of I, B0, B1, B2, and B3 frames. The results are presented in the paper. All presented results concern a wide range of QP values in a video encoder.

  8. Jakub Stankowski, Tomasz Grajek, Damian Karwowski, Krzysztof Klimaszewski, Olgierd Stankiewicz, Krzysztof Wegner, Marek Domański,
    Analysis of frame partitioning in HEVC,
    Lecture Notes in Computer Science, Proceedings of International Conference on Computer Vision and Graphics ICCVG 2014, Warsaw, Poland, 15-17 September 2014, pp. 602-609,
    Full textEndNoteCitation

    Abstract

    The paper presents analysis of frame partitioning in the next generation video coding standard HEVC. Complex study on frequency of the particular coding unit, prediction unit and transform unit sizes selection made by the encoder compliant with HEVC technology is included. General conclusions based on extensive experiments for HD video sequences are presented. Such knowledge may be the first step to the development of more efficient mode selection algorithms.

2013

  1. Krzysztof Wegner, Olgierd Stankiewicz, Masayuki Tanimoto, Marek Domański,
    Enhanced View Synthesis Reference Software (VSRS) for Free-viewpoint television,
    JCT-3V (ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11), MPEG_M31520, Geneva, Switzerland, 25 October-1 November 2013,
    Full textEndNoteCitation

  2. Olgierd Stankiewicz, Krzysztof Wegner, Masayuki Tanimoto, Marek Domański,
    Enhanced Depth Estimation Reference Software (DERS) for Free-viewpoint Television,
    JCT-3V (ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11), MPEG_M31518, Geneva, Switzerland, 25 October-1 November 2013,
    Full textEndNoteCitation

  3. Olgierd Stankiewicz, Krzysztof Wegner, Marek Domański,
    AHG14: Optimized QP/QD curie for 3D coding with half and full resolution depth maps,
    Joint Collaborative Team on 3D Video Coding Extension Development of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11, 5th Meeting, JTC3V-E0269, Vienna, Austria, 27 July – 02 August 2013,
    Full textEndNoteCitation

  4. Krzysztof Wegner, Olgierd Stankiewicz, Marek Domański,
    AHG14 Comparison of half resolution depth map coding versus full resolution depth map coding in 3D-ATM,
    Joint Collaborative Team on 3D Video Coding Extension Development of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11, 4th Meeting, JTC3V-D0080, Incheon, Korea, 20–26 April 2013,
    Full textEndNoteCitation

  5. Tomasz Grajek, Olgierd Stankiewicz, Krzysztof Wegner,
    Correlation analysis between MOS data collected on stereoscopic and autostereoscopic displays,
    Joint Collaborative Team on 3D Video Coding Extension Development of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11, 3rd Meeting, JCT3V-C0202, Geneva, Switzerland, 17-23 January 2013,
    Full textEndNoteCitation

  6. Olgierd Stankiewicz, Krzysztof Wegner,
    3D-CE7.a Cross check of Improved Nonlinear Depth Representation performed by Poznan University of Technology,
    Joint Collaborative Team on 3D Video Coding Extension Development of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11, 3rd Meeting, JCT3V-C0166, Geneva, Switzerland, 17-23 January 2013,
    Full textEndNoteCitation

  7. Marek Domański, Olgierd Stankiewicz, Krzysztof Wegner, Maciej Kurc, Jacek Konieczny, Jakub Siast, Jakub Stankowski, Robert Ratajczak, Tomasz Grajek,
    High Efficiency 3D Video Coding Using New Tools Based on View Synthesis,
    IEEE Transactions on Image Processing, Special Issue on 3D Video Representation, Compression, & Rendering, Vol. 22, No. 9, September 2013, pp. 3517-3527,
    Full textEndNoteCitationDOI

    Abstract

    We propose a new coding technology for 3D video represented by multiple views and the respective depth maps. The proposed technology is demonstrated as an extension of the recently developed high efficiency video coding (HEVC). One base views are compressed into a standard bitstream (like in HEVC). The remaining views and the depth maps are compressed using new coding tools that mostly rely on view synthesis. In the decoder, those views and the depth maps are derived via synthesis in the 3D space from the decoded baseview and from data corresponding to small disoccluded regions. The shapes and locations of those disoccluded regions can be derived by the decoder without any side information transmitted. To achieve high compression efficiency, we propose several new tools such as depth-based motion prediction, joint high frequency layer coding, consistent depth representation, and nonlinear depth representation. The experiments show high compression efficiency of the proposed technology. The bitrate needed for transmission of two side views with depth maps is mostly less than 50% than that of the bitrate for a single-view video.

  8. Olgierd Stankiewicz, Krzysztof Wegner, Marek Domański,
    Nonlinear depth representation for 3D video coding,
    IEEE International Conference on Image Processing ICIP 2013, Melbourne, Australia, 15-18 September 2013, pp. 1752-1756, ISBN: 978-1-4799-2341-0,
    Full textEndNoteCitation

2012

  1. Marek Domański, Krzysztof Klimaszewski, Jacek Konieczny, Maciej Kurc, Robert Ratajczak, Jakub Siast, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    Image coding method,
    Patent office: USPTO, Status: granted,
    Application number: US 13/680652, Filling date: 19.11.2012,
    Publication number: US 2013/0129235A1, Publication date: 23.05.2013,
    Patent number: US 8761527, Date of Patent: 24.06.2014,
    EndNoteCitation

    Abstract

    An image coding method. The method includes encoding a first image, the first image having a reduced spatial resolution relative to an input image, wherein values of the first image depend on energy of corresponding areas of the input image, and encoding a first shape information of the shape of a spatial spectrum of the input image. The method further includes reconstructing a second image from the encoded first image, reconstructing a second shape information from the encoded first shape information, and generating a noise image having an intensity described by the second image and having a spectrum shape described by the second shape information.

  2. Maciej Kurc, Olgierd Stankiewicz, Marek Domański,
    Depth map inter-view consistency refinement for multiview video,
    29th Picture Coding Symposium, PCS 2012, Kraków, Poland, 7-9 May 2012, pp. 137-140,
    Full textEndNoteCitationDOI

  3. Krzysztof Wegner, Olgierd Stankiewicz,
    Results of subjective evaluation in 3DV-CE2,
    ISO/IEC JTC1/SC29/WG11 MPEG 2012, m25244, Geneva, Switzerland, 30 April-4 May 2012,
    Full textEndNoteCitation

  4. Krzysztof Wegner, Olgierd Stankiewicz, Jakub Siast,
    3D-CE2h results on Nonlinear Depth Representation,
    ISO/IEC JTC1/SC29/WG11 MPEG 2012, m25022, Geneva, Switzerland, 30 April-4 May 2012,
    Full textEndNoteCitation

  5. Olgierd Stankiewicz, Krzysztof Wegner, Jakub Siast,
    3D-CE2a results on Nonlinear Depth Representation,
    ISO/IEC JTC1/SC29/WG11 MPEG 2012, m25017, Geneva, Switzerland, 30 April-4 May 2012,
    Full textEndNoteCitation

  6. Olgierd Stankiewicz, Krzysztof Wegner, Marek Domański,
    Nonlinear depth representation – extended results,
    ISO/IEC JTC1/SC29/WG11 MPEG 2011, /m23791, San Jose, USA, 6-10 February 2012,
    Full textEndNoteCitation

  7. Olgierd Stankiewicz, Krzysztof Wegner,
    Cross- check of improved nonlinear depth representation (3D-ATM),
    Joint Collaborative Team on 3D Video Coding Extension Development of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11, B0186, Shanghai, China, 15-19 October 2012,
    Full textEndNoteCitation

  8. Olgierd Stankiewicz, Krzysztof Wegner,
    3D-HEVC with reduced resolution of depth,
    Joint Collaborative Team on 3D Video Coding Extension Development of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11, B0183, Shanghai, China, 15-19 October 2012,
    Full textEndNoteCitation

  9. Olgierd Stankiewicz, Krzysztof Wegner, Marek Domański,
    3D-HEVC HLS on depth definition,
    Joint Collaborative Team on 3D Video Coding Extension Development of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11, B0164, Shanghai, China, 15-19 October 2012,
    Full textEndNoteCitation

  10. Krzysztof Wegner, Olgierd Stankiewicz,
    Additional Cross Check of 3D-CE7.h Results on Global Depth and View Prediction of NICT by Poznan,
    Joint Collaborative Team on 3D Video Coding Extension Development of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11, a0168, Stockholm, Sweden, 16-20 July 2012,
    Full textEndNoteCitation

  11. Jakub Siast, Olgierd Stankiewicz, Krzysztof Wegner, Marek Domański,
    Independent intra-period coding in 3D-HTM,
    Joint Collaborative Team on 3D Video Coding Extension Development of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11, a0091, Stockholm, Sweden, 16-20 July 2012,
    Full textEndNoteCitation

  12. Olgierd Stankiewicz, Krzysztof Wegner, Marek Domański,
    Impact of View Synthesis Optimization (VSO) on depth quality,
    Joint Collaborative Team on 3D Video Coding Extension Development of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29/WG 11, a0090, Stockholm, Sweden, 16-20 July 2012,
    Full textEndNoteCitation

  13. Sandra Cancino-Suarez, Krzysztof Klimaszewski, Olgierd Stankiewicz, Marek Domański,
    Enhancement of Stereoscopic Depth Estimation by the Use of Motion Information,
    44th IEEE Southeastern Symposium on System Theory, Jacksonville, FL, USA, 11-13 March 2012, pp. 94-98,
    Full textEndNoteCitation

  14. Jakub Stankowski, Marek Domański, Olgierd Stankiewicz, Jacek Konieczny, Jakub Siast, Krzysztof Wegner,
    Extensions of the HEVC Technology for Efficient Multiview Video Coding,
    19th IEEE International Conference on Image Processing (ICIP 2012), Orlando, Florida, U.S.A., 30 September - 3 October 2012, pp. 1317-1320, ISSN: 1522-4880,
    Full textEndNoteCitationDOI

  15. Marek Domański, Jacek Konieczny, Maciej Kurc, Robert Ratajczak, Jakub Siast, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    3D video compression by coding of disoccluded regions,
    19th IEEE International Conference on Image Processing (ICIP 2012), Orlando, Florida, U.S.A., 30 September - 3 October 2012, pp. 1317-1320,
    Full textEndNoteCitationDOI

2011

  1. Krzysztof Wegner, Olgierd Stankiewicz,
    Improved depth estimation with advanced occlusion handling,
    ISO/IEC JTC1/SC29/WG11 MPEG 2011/M21365, m21365, Torino, Italy, 18-22 July 2011,
    Full textEndNoteCitation

  2. Krzysztof Wegner, Olgierd Stankiewicz, Marek Domański,
    3DV/FTV EE4 report on Poznan Street and Poznan CarPark sequences,
    ISO/IEC JTC1/SC29/WG11 MPEG 2011/M20192, m20192, Genewa, Switzerland, 21-25 March 2011,
    Full textEndNoteCitation

  3. Krzysztof Klimaszewski, Krzysztof Wegner, Olgierd Stankiewicz, Marek Domański,
    3DV/FTV EE4 report on Poznan Street sequence,
    ISO/IEC JTC1/SC29/WG11 MPEG 2011/M19392, m19392, Daegu, South Korea, 24-28 January 2011,
    EndNoteCitation

  4. Marek Domański, Tomasz Grajek, Damian Karwowski, Krzysztof Klimaszewski, Jacek Konieczny, Maciej Kurc, Adam Łuczak, Robert Ratajczak, Jakub Siast, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    Multiview HEVC – experimental results,
    Joint Collaborative Team on Video Coding (JCT-VC) of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11, MPEG 2011 / M22147, Geneva, Switzerland, 28 November - 02 December 2011,
    Full textEndNoteCitation

2010

  1. Krzysztof Wegner, Olgierd Stankiewicz, Marek Domański,
    Input on Call for Proposals on 3D Video Coding document,
    ISO/IEC JTC1/SC29/WG11 MPEG 2010/M17900, m17900, Genewa, Szwajcaria, July 2010,
    Full textEndNoteCitation

  2. Olgierd Stankiewicz, Marek Domański, Krzysztof Wegner,
    Stereoscopic Depth Refinement by Mid-Level Hypothesis,
    IEEE International Conference on Multimedia and Expo, Singapore, Singapore, 19-23 July 2010,
    Full textEndNoteCitation

  3. Krzysztof Wegner, Olgierd Stankiewicz,
    Generation of temporally consistent depth maps using noise removal from video,
    Lecture Notes in Computer Science, Proceedings of International Conference on Computer Vision and Graphics ICCVG 2010, 20-22 September 2010,
    Full textEndNoteCitation

  4. Krzysztof Wegner, Olgierd Stankiewicz, Marek Domański,
    Stereoscopic depth estimation using fuzzy segment matching,
    28th Picture Coding Symposium, PCS 2010, Nagoya, Japan, 8-10 December 2010, pp. 1-4,
    Full textEndNoteCitation

  5. Krzysztof Wegner, Olgierd Stankiewicz, Marek Domański,
    Error Concealment for MVC and 3D Video Coding,
    28th Picture Coding Symposium, PCS 2010, Nagoya, Japan, 8-10 December 2010, pp. 1-4,
    Full textEndNoteCitation

  6. Marek Domański, Krzysztof Klimaszewski, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    Chapter: Efficient Transmission of 3D Video Using MPEG-4 AVC/H.264 Compression Technology,
    Book: Computer Communication Networks and Telecommunications, Editors: Zeadally, Sherali and Cerqueira, Eduardo and Curado, Marília and Leszczuk, Mikołaj,
    Lecture Notes in Computer Science: Vol. 6157, Springer Berlin Heidelberg, Berlin, 2010, pp. 145-156, ISBN: 978-3-642-13788-4, ISSN: 0302-9743,
    Full textEndNoteCitationDOI

    Abstract

    At a receiver terminal, true 3D video provides ability to watch views selected from a large number of available views. Such ability is needed for the forthcoming 3D video applications like free-view television, autostereoscopic displays etc. Delivery of many views through communication channels is a challenging problem that has to be solved in the near future. In this paper, we study delivery of real 3D video using the state-of-the-art compression technology. Considered are the issues related to 3D video data model as well its application for generation of video from arbitrary virtual viewpoint. Included are respective experimental results.

  7. Marta Stępniewska, Olgierd Stankiewicz, Adam Łuczak, Jakub Siast,
    Embedded debugging for NoCs,
    17th International Conference on Mixed Design of Integrated Circuits and Systems, Wrocław, Poland, 24-26 June 2010,
    Full textEndNoteCitation

2009

  1. Olgierd Stankiewicz, Krzysztof Wegner, Menno Wildeboer,
    A soft – segmentation matching in Depth Estimation Reference Software (DERS) 5.0,
    ISO/IEC JTC1/SC29/WG11 MPEG 2009/M17049, m17049, Xian, China, October 2009,
    Full textEndNoteCitation

  2. Marek Domański, Krzysztof Klimaszewski, Jacek Konieczny, Maciej Kurc, Adam Łuczak, Olgierd Stankiewicz, Krzysztof Wegner,
    An experimental Free-view Television System,
    1st International Conference on Image Processing & Communications (IPC), Bydgoszcz, Polska, September 2009, pp. 175-184,
    Full textEndNoteCitation

  3. Krzysztof Wegner, Olgierd Stankiewicz,
    Similarity measures for depth estimation,
    3DTV-Conference 2009 The True Vision Capture, Transmission and Display of 3D Video, Potsdam, Germany, 4-6 May 2009,
    Full textEndNoteCitation

2008

  1. Krzysztof Wegner, Olgierd Stankiewicz,
    3DV/FTV EE1 and EE2 results on Alt Moabit sequence,
    ISO/IEC JTC 1/SC 29/WG 11 MPEG 2008, M15832, Busan, South Korea, October 2008, pp. 1-4,
    Full textEndNoteCitation

  2. Krzysztof Wegner, Olgierd Stankiewicz,
    Depth Map Estimation Software version 3,
    ISO/IEC JTC 1/SC 29/WG 11 MPEG 2008, M15540, Hannover, Germany, July 2008, pp. 1-4,
    Full textEndNoteCitation

  3. Krzysztof Wegner, Olgierd Stankiewicz,
    Depth Map Estimation Software version 2,
    ISO/IEC JTC 1/SC 29/WG 11 MPEG 2008, M15338, Archamps, France, April 2008, pp. 1-4,
    Full textEndNoteCitation

  4. Krzysztof Wegner, Olgierd Stankiewicz,
    Depth Map Estimation Software version,
    ISO/IEC JTC 1/SC 29/WG 11 MPEG 2008, M15175, Antalya, Turkey, January 2008, pp. 1-4,
    Full textEndNoteCitation

  5. Olgierd Stankiewicz, Krzysztof Wegner,
    System telewizji stereowizyjnej z wyznaczaniem mapy głębi,
    Krajowa Konferencja Radiokomunikacji, Radiofonii i Telewizji KKRRiT 2008, Wrocław, Poland, April 2008,
    Full textEndNoteCitation

  6. Olgierd Stankiewicz, Krzysztof Wegner,
    A hybrid technique for stereoscopic depth estimation in video,
    International Conference on Signals and Electronic Systems, Kraków, Poland, 14-17 September 2008, pp. 209-2012,
    EndNoteCitationDOI

  7. Adam Łuczak, Paweł Garstecki, Olgierd Stankiewicz, Marta Stępniewska,
    Network-On-Chip Based Architecture of H. 264 Video Decoder,
    International Conference on Signals and Electronic Systems, Krakow, Poland, 14-17 September 2008,
    Full textEndNoteCitation

2007

2006

  1. Olgierd Stankiewicz, Adam Łuczak, Antoni Roszak,
    Temporal noise reduction for preprocessing of video streams in monitoring systems,
    International Conference on Signals and Electronic Systems ICSES'06, Łódź, 18-20 września 2006, pp. 231-234,
    EndNoteCitation