New CAVLC encoding algorithm for lossless intra coding in H.264/AVC

Authors:
Jin Heo;Seung-Hwan Kim;Yo-Sung Ho
Affiliations:
Gwangju Institute of Science and Technology, Gwangju, Korea;Gwangju Institute of Science and Technology, Gwangju, Korea;Gwangju Institute of Science and Technology, Gwangju, Korea
Venue:
PCS'09 Proceedings of the 27th conference on Picture Coding Symposium
Year:
2009

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Abstract

Context-based adaptive variable length coding (CAVLC) of H.264/AVC was originally designed for quantized transform coefficients in lossy video coding, and as such does not yield adequate performance in lossless video coding. In this paper, we propose an improved CAVLC for lossless intra coding. Considering statistical differences of residual data in lossy and lossless coding, we design a new CAVLC encoding algorithm. Experimental results show that the proposed method provides approximately 7.6% bit savings, compared to the current H.264/AVC FRExt high profile.