摘要
介绍了分形的概念以及分形压缩的主要思想;阐述了传统的分形图像压缩编码的基本原理与实现方法;提出了一种基于图像活动性序列图像分形编码方法。该方法首先由相邻帧之间的预测差值来判断当前编码块的活动性,然后根据图像的活动性,对不同特性的块采用不同的分形编码策略,最后对编码后得到的迭代函数系统(IFS)码进行可变长度编码(VLC),以获得更高的压缩比。
The concept of fractal and the idea of fractal compressare introduced in this paper. The basic principle and implementing method of the tradition fractal image compress are expounded. A method of sequence image coding based on the activity of image is proposed . In this coding algorithm, the activity of the current block is judged by the predict error of this block at first, then for every block with different activity , different fractal coding strategy is adopted. In order to gain higher compress ratio, VLC(Variable length code) is used to the IFS (Iteration Function System) code.
出处
《通信技术》
2001年第7期103-105,共3页
Communications Technology
关键词
迭代函数系统
序列图像分形编码
图像编码
fractal, compress coding, affine transformation, IFS, sequence image
