Novel Fast Mode Decision Algorithm for P-Slices in H.264/AVC

摘要：

H.264/AVC encoder complexity is remarkable mainly due to variable block size motion estimation (ME) and exhaustive Rate Distortion Optimization (RDO). This makes real-time video coding very difficult. In this paper, a novel fast mode decision algorithm for P-Slices is presented to reduce the computational load. Based on the temporal and spatial correlation between macroblocks, a four paths prediction structure is proposed with flexible early termination strategy. Experiment results show that with this algorithm, 42％-65％ encoding time can be saved with a negligible loss in Peak Signal-to-noise Ratio (PSNR) and very little increment in bit rate. Combined with Chois method 2, our algorithm can achieve a time reduction up to 74.31％ with little loss in coding efficiency.

关键词： H.264/AVC fast mode decision early termination temporal-spatial correlation

作者: Kan Chang Bo Yang Wenhao Zhang

作者单位: School of Information and Communication Engineering Beijing University of Posts and Telecommunications Beijing,China

会议类型: 国际会议

会议名称: The Fifth International Conference on Information Assurance and Security(第五届信息保障与安全国际会议)

会议地点: 西安

会议语种:英文

页码: 189-193

在线出版日期: 2009-08-18（万方平台首次上网日期，不代表论文的发表时间）