An improved no-search fractal image coding method based on a modified gray-level transform

被引：50

作者：

Wang, Xing-Yuan ^{[1
]}

Wang, Shu-Guo ^{[1
]}

机构：

[1] Dalian Univ Technol, Sch Elect & Informat Engn, Dalian 116024, Peoples R China

来源：

COMPUTERS & GRAPHICS-UK | 2008年 / 32卷 / 04期

基金：

中国国家自然科学基金;

关键词：

fractal image coding; no search; quadtree; gray-level transform;

D O I：

10.1016/j.cag.2008.02.004

中图分类号：

TP31 [计算机软件];

学科分类号：

081202 ; 0835 ;

摘要：

In this paper, we propose a fast no-search fractal image coding algorithm based on a modified gray-level transform. To improve the possibility of successful matching for a range block and a domain block, we introduce a modified gray-level transform with more transform parameters than proposed by Tong and Pi to encode the blocks. Then, we suggest a no-search fractal image coding method using two gray-level transforms, one for the large blocks and the other for the small blocks based on the quadtree partition scheme, to speed up the encoding time and improve the quality of the reconstructed images. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：445 / 450

页数：6

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