基于压缩感知理论的视频编解码器  

Video Codec Framework Based on Compressive Sensing

作　　者：谢晓春[1,2] 赖昭胜[1] 杨汉祥[1] 

机构地区：[1]赣南师范学院物理与电子信息学院,江西赣州341000 [2]中国科学院空间科学与应用研究中心,北京100190

出　　处：《电视技术》2010年第5期14-17,共4页Video Engineering

基　　金：江西省自然科学基金项目(2009GQS0008)

摘　　要：结合压缩感知理论和传统的视频编解码技术,提出了一种基于压缩感知理论的视频编解码器。其编码过程可看成是将高维信号投影到低维空间的过程,解码过程不再是传统方式下的编码的逆过程,而可看作是求解欠定方程组的过程。该编解码器结构比较简单,不仅所需图像的样本数很少,样本数可根据不同的编码模式进行选择,而且能获得较高的压缩比和较好的重构图像质量。In this paper, a new video codec which combines compressive sensing theory and some critical ideas of traditional video codecs is proposed. The encoder works as a projector, which projects a high dimensional signal to a low dimensional domain, while the decoder which is no longer the inverse of encoder works for the solution of underdetermined equations. Compared with traditional eodecs, the new codee is simpler. Not only samples needed in the new codec are fewer than in traditional codecs and the number of samples can be changed according to the encoding mode, but also high compression ratio and good quality of reconstructed video are obtained.

关 键 词：压缩感知 视频编码 编码器 解码器 

分 类 号：TN919.81[电子电信—通信与信息系统]