Temat: video compression - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Methodology for 3D Video Subjective Quality Evaluation
Autorzy:: Lewandowski, F.
Paluszkiewicz, M.
Grajek, T.
Wegner, K.
Powiązania:: https://bibliotekanauki.pl/articles/227349.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: 3D video
video compression
subjective quality assessment
Opis:: The paper presents the methodology for 3D video subjective quality evaluation. Described methodology was designed to compare different 3D video compression technologies without an influence of any particular displaying or rendering technology. In addition detailed step by step description of test session design and preparation is provided. Experimental results for state-of-the-art 3D encoders are also included. All tests were conducted on two 3D monitors (polarization and autostereoscopic) thus influence of different displaying technologies on 3D video quality assessments has also been evaluated.
Źródło:: International Journal of Electronics and Telecommunications; 2013, 59, 1; 25-32
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Analysis of Compressed Data Stream Content in HEVC Video Encoder
Autorzy:: Stankowski, J.
Karwowski, D.
Grajek, T.
Wegner, K.
Siast, J.
Klimaszewski, K.
Stankiewicz, O.
Domański, M.
Powiązania:: https://bibliotekanauki.pl/articles/227246.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: HEVC
video compression
compressed data stream analysis
Opis:: 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.
Źródło:: International Journal of Electronics and Telecommunications; 2015, 61, 2; 121-127
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Architecture Design of The Hardware H.264/AVC Video Decoder
Autorzy:: Roszkowski, M.
Abramowski, A.
Wieczorek, M.
Pastuszak, G.
Powiązania:: https://bibliotekanauki.pl/articles/226831.pdf
Data publikacji:: 2010
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: H.264/AVC
video compression
FPGA
architecture design
Opis:: The need for real-time video compression systems requires a particular design methodology to achieve high troughput devices. The paper describes the architecture of the H.264/AVC decoder able to support SDTV and HDTV resolutions. The design applies many optimization techniques to reduce the resource consumption and maximize the throughput. The archietcture is verified with the software reference model JM16 and synhesized for FPGA technology. The maximal working frequency is 100 MHz for Stratix II devices.
Źródło:: International Journal of Electronics and Telecommunications; 2010, 56, 3; 291-300
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Increased Compression Efficiency of AVC and HEVC CABAC by Precise Statistics Estimation
Autorzy:: Karwowski, D.
Domański, M.
Powiązania:: https://bibliotekanauki.pl/articles/226764.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: entropy coding
CABAC algorithm
CTW technique
Video Compression
AVC
HEVC
Opis:: 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.
Źródło:: International Journal of Electronics and Telecommunications; 2018, 64, 3; 277-284
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

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