Integer orthogonal transforms: Design, fast algorithms, and applications

被引：0
|
作者：
Egiazarian, KO [1 ]
Rusanovskyy, D [1 ]
Astola, JT [1 ]
机构：
[1] Tampere Univ Technol, FIN-33101 Tampere, Finland
来源：
IMAGE PROCESSING: ALGORITHMS AND SYSTEMS III | 2004年 / 5298卷
关键词：
integer transforms; DCT; coding gain; fast algorithms; image denoising; video coding;
D O I：
10.1117/12.538694
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
The paper is devoted to design, fast implementation and applications of a family of 8-points integer orthogonal transforms based on a parametric matrix. A unified algorithm for their efficient computations is developed. Derived fast transforms have close coding gain performance to the optimal Karhunen-Loeve transform for the first order Markov process. Among them are also such that closely approximate the DCT-II and. at the same time, have a larger coding gain. For a particular set of parameters, integer transforms with reduced computational complexity are obtained. The comparative analysis of these transforms with the DCT-II in the framework of image denoising and video coding is performed.
引用
收藏
页码：278 / 289
页数：12
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