Title :
A new efficient bypass coding scheme based on logarithmic domain
Author :
Quanhe Yu ; Xiaozhen Zheng ; Jianhua Zheng ; Yun He ; Wei Yu ; Dadong Wang ; Junyou Chen ; Yangyang Xu
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
fDate :
May 31 2015-June 3 2015
Abstract :
This paper proposes a new efficient bypass coding scheme (EBCS) based on Logarithmic Binary Arithmetic Coding (LBAC). The bypass coding model is used to encode a symbol which has equal probability (0.5). The percentage of the bypass coding model is about 25 in CABAC of H.265/HEVC. The proposed EBCS provides a hardware-efficient design that can significantly increase the processing speed, and it has a simple algorithm structure. Experimental results show that the EBCS can reduce bypass coding time by 60% roughly. For a hardware implementation in this paper, the overall processing speed is improved by about 96%, and the hardware cost is low.
Keywords :
arithmetic codes; binary codes; video coding; CABAC; EBCS; H.265/HEVC; LBAC; algorithm structure; bypass coding model; bypass coding scheme; bypass coding time; hardware-efficient design; logarithmic binary arithmetic coding; logarithmic domain; processing speed; Complexity theory; Decoding; Encoding; Hardware; Mathematical model; Standards; Video coding; Arithmetic coding; CABAC; H.265/HEVC; LBAC; entropy coding;
Conference_Titel :
Picture Coding Symposium (PCS), 2015
Conference_Location :
Cairns, QLD
DOI :
10.1109/PCS.2015.7170057
