Oriented wavelet transform on a quincunx pyramid for image compression

被引：0
|
作者：
Chappelier, K [1 ]
Guillemot, C [1 ]
机构：
[1] Univ Rennes 1, IRISA, F-35042 Rennes, France
来源：
2005 INTERNATIONAL CONFERENCE ON IMAGE PROCESSING (ICIP), VOLS 1-5 | 2005年
关键词：
D O I：
暂无
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
This paper presents a new image coding technique based on oriented 1D multiscale decompositions on a quincunx sampling grid. A transform obtained by adapting the lifting steps of a ID wavelet transform along a local orientation is described. A quad-tree structure is used to efficiently code the orientation map, and optimized in the ratedistortion sense. A gain of up to 1.3 dB over the separable wavelet transform is observed for a set of images, with the rate estimated from the stationary entropy of the subbands.
引用
收藏
页码：625 / 628
页数：4
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