摘要
该文提出了一种高效的运动补偿三维小波视频编码方案。该方案采用运动补偿时域分析技术,以有效去除视频序列中存在的时间冗余。然后,基于视频序列的运动特征,自适应确定帧组结构,在提高编码效率的同时降低内存需求和运算复杂度。最后,根据小波图像系数特性,采用基于四叉树分裂的小波图像编码方法对三维时／空子带进行编码,以获得更高的压缩效率。实验结果表明,与其它运动补偿三维小波视频编码方法相比,该文提出的编码方案能够获得更好的性能。
This paper describes an efficient Motion-Compensated （MC）three dimension wavelet video coding system. In this system, MC temporal analysis is used to remove temporal redundancy. Then an adaptive group of pictures structure according to characteristics of motion can increase the coding efficiency and reduce computational complexity and memory requirement at the same time. Finally, a quadtree-based wavelet image coding method is proposed, which can adapt the property of wavelet image coefficient. The experimental results show that, the coding system is better than other motion-compensated three dimension wavelet video coding methods.
出处
《电子与信息学报》
EI
CSCD
北大核心
2006年第2期237-241,共5页
Journal of Electronics & Information Technology
基金
国家自然科学基金(90304001
60472036)北京市自然科学基金(4032008
4052007)北京市教委(KM200410005022
KZ200310005004)资助课题
关键词
视频编码
运动补偿时域分析
三维小波编码
四叉树分裂小波编码
自适应帧组结构
Video coding, MC temporal analysis, Three-dimension wavelet coding, Quadtree-based wavelet coding,Adaptive group of pictures （GOP） structure
