HEVC Lossless Coding and Improvements

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 HE...

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Bibliographic Details
Published in:IEEE transactions on circuits and systems for video technology 2012-12, Vol.22 (12), p.1839-1843
Main Authors: Zhou, Minhua, Gao, Wen, Jiang, Minqiang, Yu, Haoping
Format: Article
Language:English
Subjects:
Archiving
Block-based angular intra prediction
Coding
Compressing
Data compression
Encoding
High Efficiency Video Coding (HEVC)
Image coding
Interpolation
Lossless
lossless coding
Quantization
Reduction
sample-based angular intra prediction (SAP)
Streaming media
Studies
Video coding
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Summary: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.
ISSN:1051-8215
1558-2205
DOI:10.1109/TCSVT.2012.2221524