IEICE Electronics Express | |
Context-adaptive coded block pattern coding for H.264/AVC | |
Yoonsik Choe1  Yangsoo Kim1  Jinwoo Jeong1  Sungjei Kim1  | |
[1] Department of Electrical and Electronic Engineering, Yonsei University | |
关键词: H.264/AVC; CBP; entropy coding; | |
DOI : 10.1587/elex.8.1777 | |
学科分类:电子、光学、磁材料 | |
来源: Denshi Jouhou Tsuushin Gakkai | |
【 摘 要 】
References(8)For coding of quantized transform coefficients, a coded block pattern (CBP) is a key syntax element to represent the existence of coefficients in a macroblock efficiently. In H.264/AVC, the CBP is coded by using a fixed variable length coding table, called Exp-Golomb codes. However, since the CBP is highly affected by the change of quantization parameter (QP), in this paper, we show the CBP distributions according to the change of QP and propose an context-adaptive CBP coding method. The proposed scheme selects the coding table adaptively based on the context of neighbors' CBP. Experimental results show that the proposed scheme reduces average 1.15% in total bit rate and 12.54% in CBP bit rate compared to the anchor, H.264/AVC.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
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RO201911300525597ZK.pdf | 782KB | download |