Title :
Complexity Based Fast Coding Mode Decision for MPEG-2 / H.264 Video Transcoding
Author :
Shen Li ; Lingfeng Li ; Ikenaga, Takeshi ; Ishiwata, Shunichi ; Matsui, Masaki ; Goto, Satoshi
Author_Institution :
Graduate Sch. of Inf., Production & Syst., Waseda Univ., Fukuoka
Abstract :
The coexistence of MPEG-2 and its powerful successor H.264/AVC has created a huge need for MPEG-2/H.264 video transcoding. This paper proposes a 2D Sobel filter based motion vector domain method and a DCT domain method to measure macroblock complexity and realize efficient H.264 candidate mode decision. A new local edge based fast INTRA prediction mode decision method is also adopted to boost the encoding efficiency. Simulation results confirm that with the proposed methods the computational burden of a traditional transcoder can be reduced by 20% ~ 30% with only a negligible bit-rate increase for a wide range of video sequences
Keywords :
discrete cosine transforms; image sequences; motion estimation; two-dimensional digital filters; video coding; 2D Sobel filter; DCT domain method; H.264/AVC; MPEG-2/H.264 video transcoding; discrete cosine transform; fast coding mode decision; motion vector domain method; video sequences; Automatic voltage control; Discrete cosine transforms; Educational institutions; Encoding; Filters; Motion estimation; Motion measurement; Production systems; Research and development; Transcoding; H.264; MPEG-2; complexity based; video transcoding;
Conference_Titel :
Circuits and Systems, 2006. APCCAS 2006. IEEE Asia Pacific Conference on
Conference_Location :
Singapore
Print_ISBN :
1-4244-0387-1
DOI :
10.1109/APCCAS.2006.342053
