Data dependent Haar-like transform for signal and image compression

被引：0
|
作者：
Avudainayagam, A [1 ]
Vani, C [1 ]
机构：
[1] Indian Inst Technol, Dept Math, Chennai 600036, India
来源：
WAVELETS: APPLICATIONS IN SIGNAL AND IMAGE PROCESSING IX | 2001年 / 4478卷
关键词：
transform; compression; data dependent; cascade; least-square fit; rotation matrix;
D O I：
10.1117/12.449715
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
Exploiting the geometrical interpretation of the Haar transform as a rotation of the coordinate system by an angle pi/4, a new Haar-like transform is proposed which rotates the co-ordinate system by an angle which depends on the data. This data dependent transform gives better compression ratios for both signals and images than the Haar transform.
引用
收藏
页码：282 / 289
页数：6
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