区域追踪匹配甚低码率视频编码算法的研究  

Region matching pursuit video compression for very low bit rate

作　　者：陆俊[1] 阮秋琦[1] 

机构地区：[1]北方交通大学信息科学研究所,北京100044

出　　处：《通信学报》2001年第5期24-30,共7页Journal on Communications

摘　　要：本文提出一种基于Gabor变换区域追踪匹配RMP(regionmatchingpursuit)的甚低码率视频编码算法 ,用于克服块编码带来的块效应及其明显失真 ;根据图像区域特征重要性优先级选择编码保证编码质量 (PSNR) ;通过算法自学习实现Gabor追踪匹配集优化提高编码效率。实验测试结果表明 ,在甚低码率 (2 4kbit/s和 10kbit/s)下区域追踪匹配算法与H 2 6 3编码算法相比 ,能够有效保证视频编码质量 (PSNR) ,降低块效应 ,有较高的编码效率。同时算法具有码率及PSNR扩展功能。In this paper,a video coding solution using Gabor-based region-matching pursuit(RMP)is presented to overcome the block edge artifacts and noticeable distortionThe image distributes are encoded based on the visible importance in sequence,which will guarantee the PSNR of video encoding;and a self-taught course is used to improve encoding efficiencyCompared with H263 at low bit rate such as 10kbit/s and 24kbit/s,test shows RMP solution has more PSNR guarantee,with the blocking effect including decreasing,encoding efficiency increasing and scalable capacity of bitrate and PSNR

关 键 词：甚低码率 视频编码 区域匹配 图像编码 算法 

分 类 号：TN919.81[电子电信—通信与信息系统]