Rate-Distortion Optimal Wavelet Packet Transform for Low Bit Rate Video Coding

被引：0
|
作者：
Zong, Xiaofei [1 ]
Men, Aidong [1 ]
Yang, Bo [1 ]
机构：
[1] Beijing Univ Posts & Telecommun, Sch Informat & Commun Engn, Beijing 100876, Peoples R China
来源：
IST: 2009 IEEE INTERNATIONAL WORKSHOP ON IMAGING SYSTEMS AND TECHNIQUES | 2009年
关键词：
rate-distortion (RD) optimization; video coding; wavelet packet transform; motion-compensated temporal filter (MCTF);
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, we introduce a new implementation of motion-compensated temporal filter (MCTF) based Aden coder which utilizes rate-distortion optimal wavelet packet transform (RDWP) for some low bit rate video coding application scenarios. Although enhanced MC-EZBC video coder provides good scalability and high coding efficiency at high bit rates, reconstructed video quality will drop rapidly with increased motion at low bit rates. The proposed video coder applies optimal wavelet packet transform to each temporal frame and rate-distortion optimization to each GOP. Experimental results show this codec provides better performance than MC-EZBC with PSNR improved 0.3-1.2dB at low bit rates.
引用
收藏
页码：359 / 363
页数：5
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