Mode dependent vector quantization with a rate-distortion optimized codebook for residue coding in video compression
Document typeConference report
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Rights accessRestricted access - publisher's policy
The High Efficiency Video Coding standard (HEVC) supports a total of 35 intra prediction modes which aim at reducing spatial redundancy by exploiting pixel correlation within a local neighborhood. In this paper, we show that spatial correlation remains after intra prediction, leading to high energy prediction residues. We propose a novel scheme for encoding the prediction residues using a Mode Dependent Vector Quantization (MDVQ) which aims at reducing the redundancy in residual domain. The MDVQ codebook is optimized in a rate-distortion (RD) sense. Experimental results show that the codebook can be independent of the quantization parameter (QP) with no loss in terms of coding efficiency. A bitrate reduction of 1.1% on average compared to HEVC can be achieved, while further tests indicate that codebook adaptivity could substantially improve the performance.
CitationHuang, B., Henry, F., Guillemot, C., Salembier, P. Mode dependent vector quantization with a rate-distortion optimized codebook for residue coding in video compression. A: IEEE International Conference on Acoustics, Speech, and Signal Processing. "2015 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2015): South Brisbane, Queensland, Australia: 19-24 April 2015". Brisbane: Institute of Electrical and Electronics Engineers (IEEE), 2015, p. 1433-1437.