Fast intra prediction algorithm for H.264 based on SAD threshold and image texture feature

摘要：

H.264/AVC adopts brand-new intra prediction technology to encode frames efficiently, but the computational complexity restricts its real-time application in a way. In this paper, a new fast intra prediction algorithm of mode decision is proposed based on analyzing the intra encode principle of H.264 and texture feature of macro blocks(MBs). Firstly, the algorithm checks peripheral blocks of image, predicts them with 16*16 mode, then selects mode for current MB using the threshold of SAD(Sum of Absolute Difference) which is set by relativity of neighboring MBs, and further ensure the prediction mode according to texture direction of MB. Experimental results show that the proposed algorithm enhances coding speed while maintaining the coding quality. Its beneficial to real-time application of H.264.

关键词： H.264/A VC SAD image texture feature intra prediction mode decision

作者: Chaochao Yin Zhaohua Long

作者单位: Key Lab of Mobile Communication Technology Chongqing University of Posts and Telecommunications Chongqing, China

会议类型: 国际会议

会议名称: 2010 Third International Symposium on Intelligent Ubiquitous and Education(2010年第三届智能普适计算与教育国际研讨会 IUCE 2010)

会议地点: 北京

会议语种:英文

页码: 544-547

在线出版日期: 2010-09-18（万方平台首次上网日期，不代表论文的发表时间）