Description: 本文结合DCT变换的特性，利用分形的Peano一hilbert扫描曲线，对基于DCT变换的图像编码方法进行了研究，并提出了改进方法。主要工作分为两个部分: 一是在分块DCT基础上的改进。对分块后生成的各图像块矩阵，不直接作二维DCT变换，而是先进行扫描，使之重排成一维向量，再进行一维DCT变换，这样可以减少运算量。 其次是对层次余弦变换编码部分的改进。使用层次DCT变换与零树编码相结合的方法，并在扫描编码过程中，按Peano一hilbert扫描顺序进行编码。这样不仅可以减少“块效应”，而且可以加快编码速度。-this paper the characteristics of DCT, using fractal Peano a Hilbert scanning curve, the DCT-based image coding method for the study and improvement of methods. The work is divided into two main parts : First, the DCT block on the basis of improvements. Right after block production of the image block matrix, not for direct two-dimensional DCT, but first scan, so they line up in a heavy-dimensional vector and then a peacekeeping DCT, thus reducing the amount of computation. Secondly, the level of cosine transform coding some of the improvements. The use level of DCT and zero tree coding combination of methods, coding and scanning process, according to a Hilbert Peano code scanning sequence. This will not only reduce the "blocking effect" but we can speed up the coding speed. Platform: |
Size: 5011456 |
Author:lzy |
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Description: 分形图像压缩原始算法，包括压缩和解压。
根据Jacin的分块压缩原理-fractal image compression original algorithm, including compression and decompression. According to the sub-block Jacin compression Principle Platform: |
Size: 1024 |
Author:刘斌 |
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Description: 应用小波进行压缩和滤波的matlab程序.程序选用Daubechies的仅4个系数的小波函数，也可选用其他小波函数，详见说明。-wavelet compression and filtering of Matlab procedures. Procedures for the selection of Daubechies only four coefficients of wavelet function can also choose other wavelet function, as described in note. Platform: |
Size: 1024 |
Author:贾籽 |
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Description: 根据伊忠科、杨绍国（电子科技大学）发表的论文"分形插值图象放大和压缩编码"编程实现。-Branch, Shao- Guo Yang (University of Electronic Science and Technology) by the paper, "Fractal Image interpolation and compression coding Large" program. Platform: |
Size: 336896 |
Author:天路 |
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Description: 分形图像压缩，有问题，请求解决，不是直接可以用的-Fractal image compression, there are problems with the request resolved, can not direct the Platform: |
Size: 1024 |
Author: |
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Description: 找到的一个关于图像压缩的程序，大家可以下载下来看看，然后试试有没有改进的办法-Found on the image compression process, everyone can download them to see, and then try to improve the approach has not Platform: |
Size: 4096 |
Author:展玉衡 |
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Description: 分形图像压缩程序 有小问题存在 请自行修改-Fractal image compression process has a small problem in your own modifications Platform: |
Size: 1024 |
Author:gloria |
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Description: 分形图像压缩 效果好 但是运行时间长 需要改进-Fractal image compression effective running a long time but need to improve Platform: |
Size: 2048 |
Author:gloria |
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Description: 彩色图像分形压缩，由R,G，B中确定一个R块与D块的匹配位置，其他二原色只需在同一个D块位置匹配即可，只改变对应的亮度和偏移量即可，比SFC的方法节省时间。-Fractal color image compression, by the R, G, B defined in a R Block and D Block matching location, the other two primary colors just in the same location matching block D can only change the corresponding brightness and can offset than SFC method to save time. Platform: |
Size: 611328 |
Author:鞠金玲 |
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Description: wavelet_fractal_compressor小波技术与分形技术相结合进行图像压缩，压缩效果好，但是运行时间比较长。作为实验还是可以用的-wavelet_fractal_compressor wavelet technology and fractal technology combining image compression, compression effects, but relatively long running time. Can be used as an experimental or the Platform: |
Size: 3072 |
Author:awh1979 |
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Description: 分形图像课件：第06章 分形编码的数学基础 第07章 基本分形编码算法 第08章 分形编码的改进算法 图像压缩附代码－基本分形算法讲稿-Fractal Image courseware: the first 06 chapters of mathematical fractal coding based on the first 07 chapters of basic fractal coding algorithm section Chapter 08 Improvement of fractal coding algorithm for image compression attached code- the basic fractal algorithm of the script Platform: |
Size: 4081664 |
Author:leonwwj |
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Description: 在对基本的域分形图像压缩方法进行分析基础上提出了一种改进方案即基于自适应分类加权最小二乘法的域分形图像压缩方法并使用基本方法和改进方法对标准灰度图像分别进行了测试测试结果表明本文提出的方法可以在下降很小的情况下大大提高编码速度-In the domain of the basic fractal image compression method based on an analysis of an improved program that is based on adaptive classification domain weighted least squares fractal image compression method and use the basic methods and standards to improve the method of gray-scale images were the test results show that the method proposed in this paper can be very small in the case declined significantly improve the coding speed Platform: |
Size: 180224 |
Author:chenruibao |
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Description: 一个分形压缩的程序：
1、因为本程序时间长，FX中先选择图片的大小
2、编码与解码
3、做误差图和只方图
4：画出每次迭代的解码图象
5、本程序来自本网站，修改了部分，解释说明更清楚。
6、增加了部分功能，希望对大家有所帮助，互相学习……
-A fractal compression process: 1, because this process a long time, FX in the first select the size of picture 2, encoding and decoding 3, so the error map and the only side Figure 4: Draw the image of each iteration of the decoder 5, This procedure from this site, modify the part, more clearly explained. 6, an increase of some functions, I hope all of you to help and learn from each other ... ... Platform: |
Size: 3072 |
Author:刘清 |
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Description: matlab 分形压缩研究 分形压缩拥有很高的压缩比，用MATLAB实现时间较C要长 这里供参考-matlab fractal compression Fractal compression research has a high compression ratio, using MATLAB to achieve a longer time than C here for reference Platform: |
Size: 1024 |
Author:张罗 |
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Description: 分形的一些程序，包含基于分形的图像压缩及重建-Fractal number of procedures, including fractal-based image compression and reconstruction Platform: |
Size: 5120 |
Author:李伟 |
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Description: fractal image compression of gray scale images....
only works for square images...
try with lena.bmp a gray scale one....
good compression ratio acheived Platform: |
Size: 4096 |
Author:Koushik |
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Description: 对于遥感图像，研究了一种基于基于Contourlet变换和分形压缩方法，方法具有一定的实用价值，程序包中有实验图片。-For the remote sensing images, a kind of transformation based on Contourlet and fractal based compression methods, the method has some practical value, experimental pictures in the package. Platform: |
Size: 344064 |
Author:STYX |
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Description: 里面包含有所有的matlab下的运行程序 还有相应的计算需要的图像 非常全面 另外图像压缩的源码大多集中在灰度图上,此源码是基于彩色图像的-Which contains all of the matlab run the program under the corresponding calculation also requires a very comprehensive image of the source code for other image compression are mostly concentrated in grayscale, this source is based on the color image Platform: |
Size: 611328 |
Author:韩玉兰 |
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Search - compression fractal matlab