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New bitstream structure for parallel context-adaptive-variable-length-coding decoding

[+] Author Affiliations
Yun Gu Lee

Digital Media Communication Research and Development Center (DMC R&D)Samsung Electronics Co., Ltd., 416, Maetan 3-dong, Yeongtong-gu, Suwon-si, Gyeonggi-do 443-742, Republic of Korea

Kyung Hwan Cho

Digital Media Communication Research and Development Center (DMC R&D)Samsung Electronics Co., Ltd., 416, Maetan 3-dong, Yeongtong-gu, Suwon-si, Gyeonggi-do 443-742, Republic of Korea

J. Electron. Imaging. 21(4), 043002 (Oct 01, 2012). doi:10.1117/1.JEI.21.4.043002
History: Received May 24, 2012; Revised August 18, 2012; Accepted September 5, 2012
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Abstract.  A context-adaptive-variable-length-coding (CAVLC) decoder cannot determine an exact start position of the k’th syntax element until it decodes the (k1)’th syntax element, which makes parallel CAVLC decoding difficult. We propose a new bitstream structure to maximize parallelism of CAVLC decoding. Our algorithm enables us to simultaneously access multiple points from different MBs in a bitstream. Then, a CAVLC decoder can concurrently read multiple symbols from the multiple access points and decode them in parallel. Experimental results show that the proposed algorithm significantly increases decoding speed without sacrificing coding efficiency.

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© 2012 SPIE and IS&T

Citation

Yun Gu Lee and Kyung Hwan Cho
"New bitstream structure for parallel context-adaptive-variable-length-coding decoding", J. Electron. Imaging. 21(4), 043002 (Oct 01, 2012). ; http://dx.doi.org/10.1117/1.JEI.21.4.043002


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