AN IMPROVED FRACTAL IMAGE CODING METHOD

被引：12
|
作者：
Wang, Xing-Yuan [1 ]
Li, Fan-Ping [1 ]
Chen, Zhi-Feng [1 ]
机构：
[1] Dalian Univ Technol, Sch Elect & Informat Engn, Dalian 116024, Peoples R China
来源：
FRACTALS-COMPLEX GEOMETRY PATTERNS AND SCALING IN NATURE AND SOCIETY | 2009年 / 17卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Fractal Image Coding; Quadtree Division; Asymptotic Strategy; Neighbor Search;
D O I：
10.1142/S0218348X09004545
中图分类号：
O1 [数学];
学科分类号：
0701 ; 070101 ;
摘要：
This paper presents a fast fractal image coding method based on quadtree division, improved neighbor search and asymptotic strategy. We search the optimal matched domain block of a range block in its five nearest neighbor blocks and make asymptotic moves along the direction of potential optimal solution. If the optimal solution can not be improved, we carry out quadtree division for this range block until it caters to our demand or reaches greatest division level. The experimental results show that the coding speed of the proposed method declined slightly, but it has a better quality of reconstructed image and higher compression ratio in comparisons with no search method.
引用
收藏
页码：451 / 457
页数：7
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