计算机工程与应用2011，Vol.47Issue(12)：206-209,4.DOI:10.3778/j.issn.1002-8331.2011.12.058
频率域Wyner-Ziv视频编码算法的改进
Improving on transform domain Wyner-Ziv video coding algorithm
摘要
Abstract
According to the characteristic of wireless sensor network devices and the Wyner-Ziv video code, an improved method is given in this paper on transform domain Wyner-Ziv video coding proposed by Bernd Girod in orde to increase compression efficiency. The given method classifies image blocks into three modes,skip mode,low frequent mode and full frequent mode by simply computing the DCT coefficients on the encoders. On the decoder it chooses the average interpolation estimation, adaptive search motion compensated interpolation estimation and adaptive search refinement motion compensated interpolation estimation correspondingly. This scheme can achieve low bitrates transmission by eliminating most inter-frame prediction as well as precise side information with the lowest decoding cost,which avoids degradation of image quality. Experimental results show that the average bitrates of the proposed algorithm declines 40％ to the original transform domain Wyner-Ziv video coding system.关键词
视频压缩/分布式视频编码/频域Wyner-Ziv视频编码/边信息Key words
video compression/distributed video coding/transform domain Wyner-Ziv video coding/side information分类
信息技术与安全科学引用本文复制引用
肖艳,刘峰,夏宏飞..频率域Wyner-Ziv视频编码算法的改进[J].计算机工程与应用,2011,47(12):206-209,4.基金项目
江苏省自然科学基金(the Natural Science Foundation of Jiangsu Province of China under Grant No.BK2007238) （the Natural Science Foundation of Jiangsu Province of China under Grant No.BK2007238）
江苏省高校自然科学研究项目(No.09KJB510015) （No.09KJB510015）
中兴基金项目(No.0745). （No.0745）
