基于视觉特性的分形图像压缩编码  

A Method of Image Coding Based on the Visual Character

作　　者：吴蓓[1] 翟娟娟[1] 李晓辉[1] 

机构地区：[1]安徽大学计算智能与信息处理教育部重点实验室,合肥230039

出　　处：《信息技术》2002年第10期25-27,共3页Information Technology

基　　金：安徽省教育厅科研项目 (2 0 0 2kj0 0 1)资助。

摘　　要：介绍了分形的基本概念及分形的数学原理 ,并针对传统的分形图像压缩编码算法的不足之处 ,提出了一种基于视觉特性的分形压缩算法。该方法利用人眼对灰度变化的敏感程度与背景有关的特点 ,在综合考虑图像块的均值与方差的前提下 ,动态地改变分形压缩编码时定义域块仿射变换后拼贴到值域块的最小误差 ,从而提高了编码速度。The base concept of fractal and the math principle of fractal compress are introduced in this paper, the basic principle and implementing method of the tradition fractal image compress are expound, a method of image coding based on the visual character are proposed. In this coding algorithm, based on the character that the visual sensitivity of eye relates to the background, we dynamically modify the matching error after sufficient considering the average and the difference of the coding block, consequently reduce the coding time.

关 键 词：迭代函数系统 分形 图形编码 视觉特性 

分 类 号：TN919.81[电子电信—通信与信息系统]