CUDA-based H.264/AVC Deblocking Filtering
In H.264/AVC decoder,adaptive deblocking filter is one of the most complex modules and it takes 33％ of the whole decoding process time. Its optimization, not only in algorithm level but also in code level, is a very impor tant topic. In this paper, CUDA technology is proposed for speeduping the deblocking process. First, a frame is divided into 16×16 macroblocks and/or 4×4 subblocks. Second, edges of each block are highly parallelly filtered by SIMT(single instruction multiple thread) CUDA in structions. Comparison of the time consumption by pro cessing a 640×480(4:2:0) video on CUDA and CPU is carried out. The proposed CUDA approach offers al most 15x improvement on the decoding efficiency.
Ting Liu Eryan Yan onghui Cheng Ying Fu
School of Communication and Information Engineering, Shanghai University, Shanghai, China
国际会议
上海
英文
1547-1551
2010-10-20（万方平台首次上网日期，不代表论文的发表时间）