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HEVC Lossless Coding and Improvements.
- Source :
-
IEEE Transactions on Circuits & Systems for Video Technology . Dec2012, Vol. 22 Issue 12, p1839-1843. 5p. - Publication Year :
- 2012
-
Abstract
- The lossless coding mode of the High Efficiency Video Coding (HEVC) main profile that bypasses transform, quantization, and in-loop filters is described. Compared to the HEVC nonlossless coding mode with the smallest quantization parameter value (i.e., 0 for 8-b video and -12 for 10-b video), the HEVC lossless coding mode provides perfect fidelity and an average bit-rate reduction of 3.2%–13.2%. It also significantly outperforms the existing lossless compression solutions, such as JPEG2000 and JPEG-LS for images as well as 7-Zip and WinRAR for data archiving. To further improve the coding efficiency of the HEVC lossless mode, a sample-based angular intra prediction (SAP) method is presented. The SAP employs the same prediction mode signaling method and the sample interpolation method as the HEVC block-based angular prediction, but uses adjacent neighbors for better intra prediction accuracy and performs prediction sample by sample. The experimental results reveal that the SAP provides an additional bit-rate reduction of 1.8%–11.8% on top of the HEVC lossless coding mode. [ABSTRACT FROM PUBLISHER]
Details
- Language :
- English
- ISSN :
- 10518215
- Volume :
- 22
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Circuits & Systems for Video Technology
- Publication Type :
- Academic Journal
- Accession number :
- 84742544
- Full Text :
- https://doi.org/10.1109/TCSVT.2012.2221524