This paper introduces some basic concepts of fractal geometry and fractal image compression, and also introduces some kinds of image compression coding method based on fractal.
本文介绍了分形几何和分形图像压缩的一些基本概念，以及以分形为基础的几种图像压缩编码方法。
The experimental results show that the fixed compression dictionary can realize fractal image coding quickly and has some fractal image merit decoding.
实验结果表明，固定压缩字典能快速地实现分形图像的编码，并具有部分分形图像的解码优点。
In order to improve the ratio of binary image compression, using top-dowm method of coding, bring forward a fractal image compression method based on isosceles right triangle, and simulated.
为了提高二值图像的压缩比，采用自顶向下的编码方法，提出一种基于等腰直角三角形的分形图像压缩算法，并进行仿真实验。
Fractal image coding is one of researching focuses in image coding field at present. It is a kind of data compression technique with special advantages and a good developing future.
分形图像压缩编码是当今图像编码领域研究的热点之一，是一种具有独特优势且极有发展前途的数据压缩技术。
This paper presents an existent and constructive proof of image fractal compression mappings and application in fractal image coding.
给出了图象分形压缩映射存在性的一个构造性证明，并应用在图象编码中。
This paper first introduces the common image compression technology-Huffman coding and fractal coding, and then proposes some improvements.
本文通过介绍常见的图像压缩技术——哈夫曼编码和分形编码，提出了一些改进的方法。
In this paper, fractal image coding and fractal interpolation for image compression are studied at first.
本文首先研究了分形图象压缩编码和分形插值图象压缩方法。
Fractal coding has been proved useful for image compression, and it is also proved effective for content-based image retrieval.
分形编码在图像压缩方面取得了很好的效果，同时也能够用于基于内容的图像检索。
Finally, experiments have shown that it can accelerate the speed of coding greatly compared with the original approach of fractal image coding in similar PSNR and compression ratio.
实验结果表明，和原来的图像编码方法相比较，该方法在相近的峰值信噪比和压缩比的情况下，编码速度有所提高。
However, the long coding time of this method becomes the main problem for the fractal image compression to be efficient and utilizable.
分形图像编码速度慢的最主要原因是搜索最佳匹配的定义域块耗时太多。
However, the long coding time of this method becomes the main problem for the fractal image compression to be efficient and utilizable.
分形图像编码速度慢的最主要原因是搜索最佳匹配的定义域块耗时太多。
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