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New Binarization Method of Transformed Coefficient for CABAC In H.264/AVC  

Kim, Dae-Yeon (Dept. of Computer Engineering, Sejong University, DMS Lab)
Lee, Yung-Lyul (Dept. of Computer Engineering, Sejong University, DMS Lab)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SP / v.45, no.1, 2008 , pp. 64-74 More about this Journal
Abstract
It is well-known that the coding efficiency of CABAC which is one of the entropy coding methods in H.264/AVC is lower than that of CAVLC at high bitrate in intra coding, even if CABAC shows higher coding efficiency than CAVLC. Therefore, for high quality video application, this paper proposes new binarization methods about the quantized DCT coefficients that are partitioned into four regions such that CABAC shows similar coding efficiency to CAVLC at high bitrate. The proposed binarization methods consist of separate binarization tables about the four partitioned DCT coefficients considering the statistical characteristics of the quantized DCT coefficients. The proposed binarizaton method for the quantized DCT coefficients shows higher coding efficiency than CABAC in H.264/AVC and shows very similar result to CAVLC at high bitrate.
Keywords
H.264/AVC; CABAC; CAVLC; entropy coding;
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