huffman

说明：  提供JPEG标准压缩压缩的编码解码过程，90%以上的代码有注释，配有GUI设计。代码能够运行，但可能只起到借鉴的作用。(Provide JPEG standard compression coding and decoding process, more than 90% of the code is annotated, with GUI design. Code can run, but it may only serve as a reference.)

说明：  图像压缩的MATLAB算法之JEPG，希望对大家有用，欢迎下载。(MATLAB algorithm for image compression of JEPG, hope useful for everyone, welcome to download.)

JPEG编码和解码，用Huffman编码(JPEG encoding and decoding, using Huffman coding)

基于改进的不动点迭代算法的低秩Gram矩阵的恢复，里面包括一个24983*101的真实数据库。(Fixed point and bregman iterative methods for matrix rank )

用C++的模板类实现的霍夫曼树及其编码过程，可视地展示霍夫曼树的结构。(Huffman tree and its encoding process to achieve C++ template class, visual display of the structure of the Huffman tree.)

哈夫曼编码译码系统，设置发送者和接受者两个功能， 发送者的功能包括： ①输入待传送的字符信息； ②统计字符信息中出现的字符种类数和各字符出现的次数（频率）； ②根据字符的种类数和各自出现的次数建立哈夫曼树； ③利用以上哈夫曼树求出各字符的哈夫曼编码； ④将字符信息转换成对应的编码信息进行传送。 接受者的功能包括： ①接收发送者传送来的编码信息； ②利用上述哈夫曼树对编码信息进行翻译，即将编码信息还原成发送前的字符信息。 (Huffman decoding system, set the sender and the recipient of two functions, the sender' s features include: (1) input to be transmitted character information ② statistical character information, the number of types of characters and characters the number of occurrences (frequency create a Huffman tree) ② According to the number of types of characters and their respective number of occurrences ③ use the Huffman tree to find the characters Huffman coding ④ character information into the corresponding coding information for delivery. The recipient of the features include: (1) to receive the coded information to the sender transmission ② above Huffman tree coded information to be translated, is about to coded information to restore the character information before sending.)

一个强大的图象压缩开发包，支持压缩格式为jpeg，jpeg2000有损无损压缩(A powerful image compression development kit, support for compression formats jpeg, jpeg2000 detrimental to lossless compression)

本压缩文件里面含有SOFTCAST的学习文章，对于学习组播的人非常有用。(The compressed file which contains SOFTCAST learning article, very useful for learning multicast person.)

说明：  基于遗传算法的BP神经网络优化算法，可对神经网络的层数和训练函数进行自定义控制，方便系统级开发，非常实用。(The BP neural network optimization algorithm based on genetic algorithm can customize the number of layers and training functions of the neural network, which is convenient for system-level development and very practical.)

基于contourlet的图像压缩编码，其中包括计算PSNR值，压缩比和运行时间(Contourlet-based image compression coding, including the calculation of PSNR values, compression ratio and run-time)