Implementation and Optimization of High Performance H.264 Video Encoder Based on DM642

摘要：

Considering the high computational complexity and low efficiency of H.264/AVC video encoder, in this paper, we choose JM8.6 as reference software, analyze its architecture, figure out the emphasis and difficulties of optimization, and implement it on the DM642 platform. the optimizations are carried out according to the features of DM642 at three levels gradually: project level, algorithm level and instruction level, which reduce the length of the code obviously, improve the compression ratio, decrease the encoding time and delay efficiently. The experiments show that, compared with video encoder based on PC, our design has better performance and efficiency, achieves well image compression ratio(20-30 times)and high quality of the reconstructed video image(PSNR about 40dB), could meet the requirement of the real-time application in video compression and transmission.

关键词： video compression H.264 encoder computational complexity DM642 optimization

作者: FAN Jianying WANG Changjin WU Yan ZHOU Yang JIA Jia

作者单位: Key Laboratory of Measurement-Control Technology & Instrument (Harbin University of Science & Technology) Province of Heilongjiang College of Measurement-Control Technology & Communication Engineering, Harbin University of Science & Technology, Harbin 150

会议类型: 国际会议

会议名称: 第七届国际测试技术研讨会

会议地点: 北京

会议语种:英文

在线出版日期: 2007-08-05（万方平台首次上网日期，不代表论文的发表时间）