[压缩解压] 数据压缩与信源编码第7讲有损压缩的数学原理
数据压缩与信源编码有损压缩的数学原理无损数据压缩能够完全精确地重建原始数据，我们主要关注压缩的效果。 有损数据压缩不能完全精确地重建原始数据，这意味着存
在信息的损失。
Lossless Image Compression (2019-11-01, matlab, 1391KB, 下载1次)
[压缩解压] FM信号的仿真分析
FM信号仿真代码详解，有关信噪比与FFT的变换
FM signal simulation, signal to noise ratio, FFT (2017-11-22, matlab, 366KB, 下载3次)
[压缩解压] 算术编码matlab
从整个符号序列出发，根据各信源序列的概率将信源序列映射到[0,1) 区间上，然后选取区间内的一点（也就是一个二进制的小数）来表示信源序列。
From the entire sequence of symbols, the source sequence is mapped to the interval [0,1] according to the probability of each source sequence, and then a point (that is, a binary fraction) in the interval is selected to represent the source sequence. (2017-09-19, matlab, 9KB, 下载5次)
[压缩解压] huachuang
1965年苏联数学家Kolmogolov提出利用信源序列的结构特性来编码。而两位以色列研究者J.Ziv和A.Lempel独辟蹊径，完全脱离Huffman及算术编码的设计思路，创造出了一系列比Huffman编码更有效，比算术编码更快捷的通用压缩算法。将这些算法统称为LZ系列算法。
1965 Soviet mathematician Kolmogolov proposed use of the structural characteristics of the source sequences to encode. The two Israeli researchers J.Ziv and A.Lempel inventive, completely out of Huffman and arithmetic coding design ideas, created a series of more efficient than Huffman coding, arithmetic coding more efficient than general purpose compression algorithms. These algorithms will be collectively referred to as LZ series algorithms. (2014-12-01, matlab, 1KB, 下载3次)
[压缩解压] fano
费诺编码也是一种常见的信源编码方法。信源符号以概率递减的次序排列进来,将排列好的信源符号划分为两大组,使第组的概率和近于相同,并各赋于一个二元码符号”0”和”1”.然后,将每一大组的信源符号再分成两组,使同一组的两个小组的概率和近于相同,并又分别赋予一个二元码符号.依次下去,直至每一个小组只剩下一个信源符号为止.这样,信源符号所对应的码符号序列则为编得的码字.
Fenno coding is also a common source coding methods. The source symbols come in order of decreasing probability, the source symbols aligned into two groups, the first group and near the same probability, and assigns a binary code of the symbol "0" and "1" then, a large group of each source symbol and then divided into two groups, so that the same group of two teams and nearly the same probability, and they were given a binary code symbol sequence continues until each team only until the next source symbols so, the source code symbols corresponding to the symbol sequence obtained was compiled code word. (2013-11-19, matlab, 1KB, 下载1次)
[压缩解压] 091120076
基于matlab的哈夫曼编码，可以完成良好的信源压缩编码
Matlab-based Huffman coding, you can complete a good source compression coding (2012-06-06, matlab, 289KB, 下载4次)
[压缩解压] jpeg
图像压缩与解压缩,限失真信源编码是多媒体数据压缩的主要方法，为这一部分设计的实验名称是“实现一个简化的JPEG 编码器”。
Image compression and decompression limit the distortion source coding of multimedia data compression, this part of the design of the experiment name is "a simplified JPEG encoder. (2012-04-17, matlab, 341KB, 下载18次)
[压缩解压] rle
对一维、二维等信源进行游程编码，形成码流；以及对码流解码恢复
To 1-d, 2-d source such as on the run-length coding, form code flow And to streaming decoding recovery (2011-12-29, matlab, 254KB, 下载13次)
[压缩解压] huffmantest
对信源进行huffman编码，建立Huffman table，输出Huffman压缩流
For Huffman coding to source, establish Huffman table, output Huffman compression flow (2011-12-29, matlab, 2KB, 下载6次)
[压缩解压] coding
此代码是在保持信噪比的情况下，进一步提高了压缩比。灰度级的减少，势必会降低信噪比，但因为是处以比较小的整数，并没有引起熵值的剧烈变化，编码后信噪比基本不变。
This code is to maintain the signal to noise ratio of the case, to further improve the compression ratio. Gray-scale reduction, will inevitably reduce the signal to noise ratio, but because it is punishable by a relatively small integer, and did not cause dramatic changes in entropy, the encoded signal to noise ratio remains unchanged. (2010-04-03, matlab, 74KB, 下载3次)
[压缩解压] arithmeticCoding
该程序实现了算术编码的编译码，并得到随机信源的输出码字和编码效率。
The program achieves the encoding and decoding of arithmetic coding, and gets the output code words and coding efficiency of the random sourse. (2009-12-13, matlab, 2KB, 下载63次)
[压缩解压] huffman
对无记忆信源运用huffman编码，解码，计算信源熵和编码效率
Memory source to use for non-huffman encoding, decoding, computing source entropy and coding efficiency (2009-10-23, matlab, 18KB, 下载52次)
[压缩解压] ImageCompressed
利用霍夫曼编码算法对数字图像进行压缩及解压缩处理，解压出来的图像与源图像几乎完全一致，峰值信噪比为无穷大
The use of Huffman coding algorithm for digital image compression and decompression processing, extracting images from the source image is almost exactly the same infinite PSNR (2009-07-07, matlab, 165KB, 下载134次)
[压缩解压] jpegcompress
灰度图像的jpeg压缩处理，解压处理，以及信噪比SNR的计算
Grayscale jpeg image compression, decompression, as well as the calculation of signal to noise ratio SNR (2008-12-14, matlab, 17KB, 下载83次)
[压缩解压] Arithmetic
对信源数据，即exam，采用算术编码进行信源压缩编码
Source of data, that is, exam, using arithmetic coding for source compression coding (2008-09-19, matlab, 1KB, 下载30次)
[压缩解压] LempelZIv
读入一段数据，采用lempel-Ziv算法进行信源编码
Read into the section of data, using lempel-Ziv source coding algorithm (2008-09-19, matlab, 2KB, 下载48次)
[压缩解压] huffman
读入一段数据，对该数据采用哈夫曼算法进行信源编码
Read into the section of data, the data on the use of Huffman source coding algorithm (2008-09-19, matlab, 3KB, 下载54次)
[压缩解压] huffman2
这是关于信源压缩编码里面比较经典的压缩编码算法-Huffman算法的代码！
This is on the inside source coding compare a classic Coding Algorithm-Huffman algorithm code! (2008-09-06, matlab, 1KB, 下载23次)
[压缩解压] HUFFMAN
huffman编码程序,对研究信源编码十分有用,建议下载
huffman coding procedures, the study of source coding is useful, it is recommended to download (2008-05-31, matlab, 1KB, 下载27次)
[压缩解压] xHuffman
信源编码中的哈夫曼编码，MATALB程序实现
Source coding of Huffman coding, MATALB procedures realize (2008-05-07, matlab, 1KB, 下载159次)