An Improved Detection Algorithm for All-zero Blocks Based on H. 264/AVC
All-zero block detection is an optimized technique oriented to low bit-rate video coding. Based on theoretical analysis of integer transform and quantization in H.264/AVC video coding, an improved prediction algorithm based on H.264/AVC is proposed. In the proposed algorithm, before the process of integer transformation and quantization, all-zero block decision is operated to residual signal after motion estimation. The detection threshold varied as both the sum of absolute difference (SAD) and the quantization parameters. Simulation results show that, compared with traditional, methods, the amount of encoding computation reduces 15％ to 32％ without significantly declining in terms of video quality.
H.264/AVC Integer transform All-zero block (AZBs) sum of absolute difference (SAD)
Wei Wu Jing Meng
School of Information Engineering Wuhan University of Technology Hubei, China School of Information Engineering Wuhan University of Technology Hubei, China
国际会议
重庆
英文
1093-1095
2011-08-20（万方平台首次上网日期，不代表论文的发表时间）