Fast mode decision algorithm for H.264/AVC based on all-zero blocks predetermination

摘要：

The newly proposed video coding standard H.264/AVC by JVT can achieve much higher efficiency than previous standards. Unfortunately this comes at a cost in greatly increased complexity at the encoder mainly due to Motion estimation (ME) and inter/intra prediction block mode decision. In this paper, we propose a fast mode decision algorithm for H.264/AVC based on all-zero blocks predetermination. According to the characteristics of H.264/AVC integral DCT transform and quantization, we present the adaptive detection thresholds and early termination conditions for the inter/intra prediction mode. Then these thresholds are further applied to the fast mode decision algorithm from various encoding modes, which reduce the search complexity of mode decision. The experimental results show that, compared with other mode decision algorithms, our algorithm achieves approximately 21％41％ computational saving without video-quality degradation and bit-rate increase.

关键词： H.264/AVC mode decision algorithm discrete cosine transform (DCT) early dectection

作者: Haoyang Tang Haoshan Shi

作者单位: The College of Electronic Information Northwest Polytechnical University Xian,China

会议类型: 国际会议

会议名称: 2009 International Conference on Measuring Technology and Mechatronics Automation(ICMTMA 2009)(2009年检测技术与机械自动化国际会议)

会议地点: 长沙

会议语种:英文

页码: 1724-1727

在线出版日期: 2009-04-11（万方平台首次上网日期，不代表论文的发表时间）