Damian Karwowski

2023

1. Damian Karwowski,
   Zaawansowane kodowanie entropijne w hybrydowej kompresji wizji,
   Wydawnictwo Politechniki Poznańskiej, 2023, ISBN: 978-83-7775-720-8,
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2. Damian Karwowski, Marek Domański, Wen-Hsiao Peng, Hsueh-Ming Hang,
   Analysis of the Limitations of Further Improvement of the Efficiency of VVC-CABAC,
   IEEE Access, Vol. 11, No. 1, 2023, pp. 16793 - 16800,
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2022

3. Robert Furman, Rafał Hadzicki, Damian Karwowski, Krzysztof Klimaszewski,
   A browser based system for remote evaluation of subjective quality of videos,
   30th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision : WSCG 2022, Pilsen, Czech Republic, 17-20.05.2022, pp. 1-7,
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2021

4. Damian Karwowski,
   Precise Probability Estimation of Symbols in VVC CABAC Entropy Encoder,
   IEEE Access, Vol. 9, 2021, pp. 65361 - 65368,
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2020

5. Damian Karwowski,
   Precise Estimation of Probabilities in CABAC Using the Cauchy Optimization Method,
   IEEE Access, Vol. 8, 2020, pp. 32088 - 32099,
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   Abstract
   

   The algorithm of entropy coding that is now widely used in video compression is the Context based Adaptive Binary Arithmetic Coding (CABAC). This paper presents a modified, improved version of CABAC, called the CABAC+. The author’s idea for the improvement is to use in CABAC a more accurate estimation of probabilities of data symbols. The basis of the proposal is to use the Cauchy optimization method, in order to minimize the number of bits that are produced by the entropy encoder. The application of the CABAC improvement in the High Efficiency Video Coding (HEVC) technology increased the compression efficiency of entropy coding by 0.6% to 1.2%, depending on the parameters of the method and scenario of experiments. The use of the proposed solution increases the decoding time of a video, but the method virtually does not change the complexity of a video encoder.

2019

6. Damian Karwowski,
   Zrozumieć Kompresję Obrazu,
   2019, ISBN: 978-83-953420-0-4,
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7. Tomasz Grajek, Jakub Stankowski, Damian Karwowski, Krzysztof Klimaszewski, Olgierd Stankiewicz, Krzysztof Wegner,
   Analysis of video quality losses in the homogeneous HEVC video transcoding,
   IEEE Access, Vol. 7, 12 July 2019, pp. 96764 – 96774, ISSN: 2169-3536,
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2018

8. Damian Karwowski, Jakub Stankowski, Krzysztof Klimaszewski, Krzysztof Wegner, Olgierd Stankiewicz, Tomasz Grajek,
   Kodery wizyjne - 25 lat postępu,
   Twierdza, Vol. 87, No. 1, 2018, pp. 56-59, ISSN: 1507-6474,
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9. Damian Karwowski,
   Ewolucja czy rewolucja? Dwie dekady rozwoju metod kompresji wizji,
   Przegląd Telekomunikacyjny, Vol. 91, No. 6, 2018, pp. 179-184, ISSN: 1230-3496,
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10. Krzysztof Wegner, Damian Karwowski, Jakub Stankowski, Tomasz Grajek, Krzysztof Klimaszewski, Olgierd Stankiewicz,
    Fast Modes Selection in the HEVC Intra Video Encoder Based on Statistics of Modes,
    Journal of Electronic Imaging, Vol. 27, No. 4 (043051), 2018,
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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,
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    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. Damian Karwowski, Marek Domański,
    Increased Compression Efficiency of AVC and HEVC CABAC by Precise Statistics Estimation,
    International Journal of Electronics and Telecommunications, Vol. 64, No. 3, Electronics and Telecommunications Committee of Polish Academy of Sciences, Warsaw, 2018, pp. 277-284, ISSN: 0867-6747,
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    Abstract
    

    The paper presents Improved Adaptive Arithmetic Coding algorithm for application in future video compression technology. The proposed solution is based on the Context-based Adaptive Binary Arithmetic Coding (CABAC) technique and uses the authors mechanism of symbols probability estimation that exploits Context-Tree Weighting (CTW) technique. This paper proposes the version of the algorithm, that allows an arbitrary selection of depth D of context trees, when activating the algorithm in the framework of the AVC or HEVC video encoders. The algorithm has been tested in terms of coding efficiency of data and its computational complexity. Results showed, that depending on depth of context trees from 0.1% to 0.86% reduction of bitrate is achieved, when using the algorithm in the HEVC video encoder and 0.4% to 2.3% compression gain in the case of the AVC. The new solution increases complexity of entropy encoder itself, however, this does not cause an increase of the complexity of the whole video encoder.

2017

13. Olgierd Stankiewicz, Krzysztof Wegner, Damian Karwowski, Jakub Stankowski, Krzysztof Klimaszewski, Tomasz Grajek,
    Sterowanie koderem HEVC wykorzystujące usuwanie szumów,
    Przegląd Telekomunikacyjny, Vol. 86, No. 6, Poznań, Poland, 2017, pp. 488-492, ISSN: 1230-3496,
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14. 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,
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    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.

15. Krzysztof Wegner, Damian Karwowski, Tomasz Grajek, Krzysztof Klimaszewski, Jakub Stankowski, Olgierd Stankiewicz,
    Szybkie transkodowanie strumieni HEVC poprzez eliminację skwantowanych współczynników transformaty o wartości jeden,
    Przegląd Telekomunikacyjny, Vol. 86, No. 6, Poznań, Poland, 2017, pp. 417-420, ISSN: 1230-3496,
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16. Krzysztof Klimaszewski, Damian Karwowski, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner, Tomasz Grajek,
    Przyspieszenie estymacji ruchu oraz wyboru podziału CU w koderze HEVC,
    Przegląd Telekomunikacyjny, Vol. 86, No. 6, Poznań, Poland, 2017, pp. 483-487, ISSN: 1230-3496,
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17. Krzysztof Wegner, Tomasz Grajek, Jakub Stankowski, Damian Karwowski, Krzysztof Klimaszewski, Olgierd Stankiewicz, Marek Domański,
    HEVC transcoding with pruning of insignificant coefficients,
    ISO/IEC JTC1/SC29/WG11 MPEG2017, M40017, Geneva, Switzerland, 16-20 January 2017,
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18. 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,
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19. 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,
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2016

20. 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,
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    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.

21. 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,
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    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.

22. Damian Karwowski, Marek Domański,
    Context-adaptive binary arithmetic coding with precise probability estimation and complexity scalability for High-Efficiency Video Coding,
    Journal of Electronic Imaging, Vol. 25, No. 1, 2016,
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23. Krzysztof Wegner, Tomasz Grajek, Jakub Stankowski, Damian Karwowski, Krzysztof Klimaszewski, Olgierd Stankiewicz, Marek Domański,
    Pruning of insignificant coefficient in HEVC transcoding,
    ISO/IEC JTC1/SC29/WG11 MPEG2016, M39528, Chengdu, China, 17-21 October 2016,
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24. 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,
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    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.

25. 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,
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    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.

26. 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,
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    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.

27. 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,
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    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.

2015

28. 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,
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29. 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,
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30. 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,
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31. 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,
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32. 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,
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33. 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,
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34. 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,
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35. 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,
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    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.

36. Tomasz Grajek, Damian Karwowski, Jakub Stankowski,
    Chapter: Algorithmically optimized AVC video encoder with parallel processing of data,
    Book: Image Processing and Communications Challenges 7, Editors: Ryszard S. Choras,
    Advances in Intelligent Systems and Computing: No. 389, Springer International, 2015, pp. 97-104, ISBN: 978-3-319-23813-5, ISSN: 2194-5375,
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    Abstract
    

    Algorithmically optimized AVC (MPEG-4 part 10/H.264) video encoder with parallel processing of data is presented in the paper. The paper reveals the architecture of the proposed encoder together with the description of the applied software optimization techniques. Conducted experiments show exactly the degree of parallelization of computations in the encoder and the compression performance of video encoding.

37. 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,
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    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.

38. 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,
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    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.

39. 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,
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    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.

2014

40. 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,
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    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.

41. 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,
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    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.

42. Damian Karwowski,
    Chapter: Computational complexity analysis of adaptive arithmetic coding in HEVC video compression standard,
    Book: Image Processing and Communications Challenges 5, Editors: Ryszard S. Choraś,
    Advances in Intelligent Systems and Computing: Vol. 233, No. 233, Springer, 2014, pp. 133-142, ISBN: 978-3-319-01621-4,
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2013

43. Marek Domański, Tomasz Grajek, Damian Karwowski, Krzysztof Klimaszewski, Jacek Konieczny, Maciej Kurc, Adam Łuczak, Robert Ratajczak, Jakub Siast, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    Poznański kodek obrazów trójwymiarowych,
    Przegląd Telekomunikacyjny, No. 2-3, February/March 2013, pp. 81-83,
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44. Marek Domański, Maciej Bartkowiak, Tomasz Grajek, Damian Karwowski, Sławomir Maćkowiak,
    Badania naukowe w zakresie technik multimedialnych,
    Przegląd Telekomunikacyjny, No. 2-3, February/March 2013, pp. 77-80,
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2012

45. Damian Karwowski,
    Chapter: Significance of Entropy Coding in Contemporary Hybrid Video Encoders,
    Book: Image Processing and Communications Challenges 4,
    Advances in Intelligent Systems and Computing: Springer International, 2012, pp. 111-117,
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46. Marek Domański, Tomasz Grajek, Damian Karwowski, Jacek Konieczny, Maciej Kurc, Adam Łuczak, Robert Ratajczak, Jakub Siast, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    Coding of multiple video+depth using HEVC technology and reduced representations of side views and depth maps,
    29th Picture Coding Symposium, PCS 2012, Kraków, Poland, 7-9 May 2012, pp. 5-8,
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47. Marek Domański, Tomasz Grajek, Damian Karwowski, Krzysztof Klimaszewski, Jacek Konieczny, Maciej Kurc, Adam Łuczak, Robert Ratajczak, Jakub Siast, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    New coding technology for 3D video with depth maps as proposed for standardization within MPEG,
    19th International Conference on Systems, Signals and Image Processing, IWSSIP 2012, Vienna, Austria, 11-13 April 2012, pp. 401-404, ISBN: 978-1-4577-2191-5 ,
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48. Adam Łuczak, Sławomir Maćkowiak, Damian Karwowski, Tomasz Grajek,
    A Large Barrel Distortion in an Acquisition System for Multifocal Images Extraction,
    Lecture Notes in Computer Science, Proceedings of International Conference on Computer Vision and Graphics ICCVG 2012, Warsaw, Poland, 24-26 September 2012, pp. 164-171,
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49. Damian Karwowski,
    Improved Adaptive Arithmetic Coding for HEVC Video Compression Technology,
    Lecture Notes in Computer Science, Proceedings of International Conference on Computer Vision and Graphics ICCVG 2012, Warsaw, Poland, 24-26 September 2012, pp. 121-128,
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50. Adam Łuczak, Damian Karwowski, Sławomir Maćkowiak, Tomasz Grajek,
    Diamond scanning order of image blocks for massively parallel HEVC compression,
    Lecture Notes in Computer Science, Proceedings of International Conference on Computer Vision and Graphics ICCVG 2012, Warsaw, Poland, 24-26 September 2012, pp. 172-179,
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51. Tomasz Grajek, Damian Karwowski, Adam Łuczak, Sławomir Maćkowiak, Marek Domański,
    Architecture of Algorithmically Optimized MPEG-4 AVC/H.264 Video Encoder,
    Lecture Notes in Computer Science, Proceedings of International Conference on Computer Vision and Graphics ICCVG 2012, Warsaw, Poland, 24-26 September 2012, pp. 79-86,
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2011

52. Marek Domański, Tomasz Grajek, Damian Karwowski, Krzysztof Klimaszewski, Jacek Konieczny, Maciej Kurc, Adam Łuczak, Robert Ratajczak, Jakub Siast, Olgierd Stankiewicz, Jakub Stankowski, Krzysztof Wegner,
    Technical Desciption of Poznan University of Technology proposal for Call on 3D Video Coding Technology,
    ISO/IEC JTC1/SC29/WG11, MPEG 2011 / M22697, Geneva, Switzerland, 28 November-02 December 2011,
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53. 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,
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54. Damian Karwowski,
    Improved Adaptive Arithmetic Coding in MPEG-4 AVC/H.264 Video Compression Standard,
    Advances in Intelligent and Soft Computing, Vol. 102, 2011, pp. 257-263,
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2010

55. Damian Karwowski,
    TE3-Cross-check results of Local Intensity Compensation tool from Mitsubishi Electric,
    ISO/IEC JTC1/SC29/WG11 MPEG 2010/M18281, c-240, Guangzhou, China, October 2010,
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56. Damian Karwowski, Marek Domański,
    Improved Context - Based Adaptive Binary Arithmetic Coding in MPEG-4 AVC/H.264 Video Codec,
    Lecture Notes in Computer Science, Springer-Verlag, 2010, pp. 25-32,
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2009

57. Damian Karwowski, Marek Domański,
    High Speed CABAC codecs for DSP- and FPGA-based platforms,
    1st International Conference on Image Processing & Communications (IPC), Bydgoszcz, Polska, 16-18 September 2009,
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58. Damian Karwowski, Marek Domański,
    Optimized architectures of CABAC codec for IA-32-DSP- and FPGA-based platforms,
    Image Processing and Communications, Vol. 14, No. 2-3, 2009, pp. 5-123,
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59. Damian Karwowski, Marek Domański,
    Improved Context-Adaptive Arithmetic Coding in H.264/AVC,
    17th European Signal Processing Conference EUSIPCO, Glasgow, Scotland, 24-28 August 2009,
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2008

60. Damian Karwowski,
    Advanced Adaptation Algorithms of Arithmetic Coding in Hybrid Video Compression,
    PhD Dissertation at Poznan University of Technology, Faculty of Electronics and Telecommunications, 2008,
    Supervisor: prof. dr hab. inż. Marek Domański,
    Reviewers: dr hab. inż. Artur Przelaskowski, dr hab. inż. Hanna Bogucka,
    Abstract (pol)Full text (eng)EndNoteCitation
    
    
61. Damian Karwowski, Marek Domański,
    ITU-T VCEG SG 16 Q.6, Doc. VCEG-AI15, Improved Context-based Adaptive Binary Arithmetic Coding using Context-Tree Weighting,
    35 VCEG Meeting, Berlin, Germany, 16-18 June 2008,
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2007

62. Damian Karwowski,
    Improved arithmetic coding in H.264/AVC using context - tree weighting and prediction by partial matching,
    15th European Signal Processing Conference EUSIPCO 2007, Poznań, , September 3-7 2007,
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63. Damian Karwowski, Marek Domański,
    Improved arithmetic coding in H.264/AVC using context-tree weighting method,
    Picture Coding Symposium 2007, Lisbon, Portugal, November 7-9 2007,
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2006

64. Damian Karwowski,
    Ulepszone adaptacyjne kodowanie arytmetyczne w zaawansowanym koderze wizyjnym H.264/AVC wykorzystujace wazenie drzew kontekstów,
    V Sympozjum Naukowe Techniki Przetwarzania Obrazu, Serock, , 16 - 18 Listopad 2006,
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2005

65. Tomasz Grajek, Damian Karwowski,
    Złożoność obliczeniowa i efektywność kodowania entropijnego w standardzie H.264/AVC,
    Krajowa Konferencja Radiokomunikacji, Radiofonii i Telewizji, KKRRiT 2005, Kraków, Poland, 15-17 czerwca 2005, pp. 377-380,
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2004

66. Damian Karwowski,
    Kodowanie entropijne w standardzie H.264/AVC,
    Krajowa Konferencja Radiokomunikacji, Radiofonii i Telewizji, Warsaw, Poland, 16-18 June 2004,
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67. Damian Karwowski,
    An Efficient Architecture of H.264/AVC CAVLC Decoder,
    International Workshop on Systems, Signals and Image Processing, Poznań, , 13-15 September 2004, pp. 151-154,
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