分形图像压缩算法是热点之一。
为了得到可变的位率，在分形图像压缩中经常采用四叉树分割方法。
Quadtree partitions are often used in fractal image compression to achieve variable bit rates.
实验结果也证明了这种算法在分形图像压缩匹配搜索算法中应用的优越性。
Experimental results also show the superiority of its application in match seeking of fractal image compression.
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。
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.
本论文从理论和实践上介绍了不同于传统方法的压缩算法—基于遗传算法与视觉特性的分形图像压缩算法。
In this dissertation, from theoretical and practice viewpoint, we present a novel approach to compress gray-scale images based on Genetic Algorithms and Visual Character.
本文是在对小波变换后系数分布特点的研究之上，提出了一种新的基于小波变换的分形图像压缩编码算法。
These thesis put forward a new method of fractal image encodings of compression based on wavelets under the research of distribution of coefficients after wavelets translation.
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。
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.
分形图像压缩方法由于其压缩比高、解压方法简单等原因越来越收到重视，但是它的压缩质量不是很令人满意。
It is much attention of the fractal image compression method because of its high compression rate and the simple mean of decompression . But the effect of the compression is not good.
采用值域块均值作为分形编码的参数可加快分形编码的速度，提高压缩比和加快分形图像压缩解码的收敛速度。
With the mean of range block, the compression ratio is improved, the coding time and reconstruction time are decreased.
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。
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.
以上研究表明，提出的局部放电识别特征集与分形图像压缩方法，能够有效地应用于局部放电模式自动识别，并获得了良好的识别效果。
The above research results show that the proposed PD recognition features set and FIC method, can be effectively used for PD pattern recognition and good recognition results are achieved.
针对分形图像压缩中矩形划分计算量太大的问题，提出了一种混合分类方法并将其应用于图像的矩不变量，得到了一种基于矩形划分的快速分形编码方法。
Aiming at the question that the computational complexity of HV partition is great in fractal image compressing, a hybrid classification method was proposed and it was used on mass center of image.
设计了一种基于区域划分的分形图像压缩方法，这种方法根据拼贴误差最小原则合并相邻子区域对，将图像划分为一些具有局部自相似性的不规则形状区域。
A method of the fractal image compression based on region partition is designed, which is used to merge the neighboring sub-regional pairs according to the principle of the least collage errors.
目前分形图像压缩的最主要问题是其编码时间太长，这主要是因为在分形编码时，对每一个待编码值域块都需要比较数量巨大的定义域块才能找到它的最优匹配块。
The nowadays fractal image compression schemes suffers from long encoding time, because of considerable comparisons with domain blocks for each range block to find its best-match domain blocks.
实验结果表明，这一新的非线性分形压缩模型简单可行，并具有良好的压缩结果和高质量的重建图像。
The experimental results show that the new model is very simple and has better compression results and high quality rebuilding image.
分形几何方法是一种新的图像压缩编码方法。
Fractal geometry method is a new method of image compression coding.
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。
This paper first introduces the common image compression technology-Huffman coding and fractal coding, and then proposes some improvements.
此外，还建立一个小型固定字典，用以加速分形图像的压缩编码。
In addition, a small fixed dictionary that is applied to speeding up fractal image compression coding is built.
图像分形压缩的原理是利用图像中的局部自相似性来构造局部迭代函数系统。
The principle of fractal image compression is that local self-similarity form a Local Iterated Function System.
本文首先分析图像分形压缩技术中传统加速方法的性能缺陷，随后提出使用图像块的熵值来改进分形压缩性能的思想。
The paper analyses the weakness of traditional speed-up techniques for image fractal compression firstly, and proposes a novel idea by using entropy to improve image fractal compress performance.
图像分形后，对相邻帧间对应的数据求差并进行压缩编码，减少时间与空间冗余度。
After image was decomposed, the corresponding data were compressed and coded. It could reduce the time and space redundancy.
本文讨论了图像压缩的分形几何方法，并提出了形成“智能型图像压缩系统”的设想。
This paper discusses the fractal geometry method of image compression. And it provides an assumption to form "Intelligent Image Compression System".
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。
The experimental results show that the fixed compression dictionary can realize fractal image coding quickly and has some fractal image merit decoding.
因此，一幅图像的分形编码就是寻找一个合适的压缩仿射变换，它的不动点是原始图像尽可能好的近似。
Thus, encoding an image by fractal techniques consists of finding an appropriate contractive transformation whose fixed point is the best possible approximation of the original image.
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。
Fractal coding has been proved useful for image compression, and it is also proved effective for content-based image retrieval.
基于分形的图像编码方法具有高压缩比、分辨率无关性、快速解码等优越性质。
Fractal image compression has received much attention for its desirable properties like resolution independence, fast decoding and high compression ratio.
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。
The experiment results show that the fixed compression dictionary can carry out fractional image coding rapidly and has some fractional image advantages in decoding.
分形图像编码是一种很有前途的压缩技术，但编码时间长阻碍了它的广泛应用。
Fractal image coding is a very promising compression technique, but it suffers from long encoding time.
分形图像编码是一种很有前途的压缩技术，但编码时间长阻碍了它的广泛应用。
Fractal image coding is a very promising compression technique, but it suffers from long encoding time.
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