Gain-shape optimized dictionary for matching pursuit video coding

被引：8

作者：

Chou, YT

Hwang, WL ^{[1
]}

Huang, CL

机构：

[1] Acad Sinica, Inst Informat Sci, Taipei, Taiwan

[2] Natl Tsing Hua Univ, Dept Elect Engn, Hsinchu, Taiwan

来源：

SIGNAL PROCESSING | 2003年 / 83卷 / 09期

关键词：

matching pursuit; vector quantization; video compression;

D O I：

10.1016/S0165-1684(03)00112-9

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：

We show that the vector quantizer (VQ) techniques can be used to optimize a matching pursuit dictionary and improve the PSNR performance at low bitrates, The basis functions are the shape part, and the inner product values are the gain part of the VQ. The performance is evaluated based on a comparison of the PSNR in encoding motion residuals obtained using a matching pursuit coder with a reference dictionary and that obtained from the coder with a gain-shape optimized dictionary. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：1937 / 1943

页数：7

共 16 条

[1] Video compression using matching pursuits [J].