基于db2提升小波的可伸缩视频编码方法  

Scalable video coding based on db2 lifting wavelet

作　　者：赵志杰[1] 林茂六[1] 曹志民[1] 刘增玉[1] 

机构地区：[1]哈尔滨工业大学电子与信息技术研究院,黑龙江哈尔滨150001

出　　处：《通信学报》2009年第1期88-94,共7页Journal on Communications

基　　金：国家自然科学基金资助项目(60772157)~~

摘　　要：给出了一种基于db2提升小波的可伸缩视频编码系统的总体方案,提出了采用db2提升小波实现MCTF的方法,并针对运动估计过程中像素点类型给出了高通帧和低通帧的计算方法。实验结果表明,本方案与基于Haar小波的可伸缩性视频编解码方案相比,完全重建的视频图像质量和抽取部分帧后重建的视频图像质量都有了明显提高。A scalable video coding schemes based db2 lifting wavelet was described. A new method that using the db2 lifting wavelet to implement the MCTF was proposed. Based on the classification of the pixel, different formulation to compute high-pass frame and low-pass frame was given. The experimental results indicate that, in the scalable video coding system based on db2 wavelet, the video quality of fully reconstructed sequences and reconstructed sequences after being extracted are improved distinctly compared with the scalable video coding system based on Haar wavelet.

关 键 词：可伸缩视频编码 运动补偿时域滤波 db2小波 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]