Title :
Adaptive quantization for transform-domain Wyner-Ziv residual coding
Author :
Cho, Hyon Myong ; Shim, Hiuk Jae ; Jeon, Byeungwoo
Author_Institution :
Sch. of Inf. & Commun. Eng., Sungkyunkwan Univ., Suwon, South Korea
Abstract :
As prediction processes are not in Wyner-Ziv encoder but in decoder, the Wyner-Ziv coding cannot perform better than conventional video encoder. In order to improve its compression efficiency, Wyner-Ziv residual coding has been proposed which implements a prediction process with low complexity in the encoder. Although it has a good performance in pixel domain, it does not have any improvements in transform domain, since pre-defined quantization matrices are not compatible with the Wyner-Ziv residual coding. In this paper, we propose a new quantization method for transform domain Wyner-Ziv residual coding. Experimental result shows up to 36% gain in BDBR and 3.09dB gain in BDPSNR.
Keywords :
quantisation (signal); transform coding; video coding; adaptive quantization; quantization method; transform-domain Wyner-Ziv residual coding; video encoder; Decoding; Discrete cosine transforms; Encoding; Monitoring; PSNR; Quantization;
Conference_Titel :
Communications, Computers and Signal Processing (PacRim), 2011 IEEE Pacific Rim Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
978-1-4577-0252-5
Electronic_ISBN :
1555-5798
DOI :
10.1109/PACRIM.2011.6033017