JPEGyasuomatlabdaima

一种改进的方案，它针对硬故障集的特点利用指示频率连续长度码(FDR码)进行二次编码压缩。该方法充分利用测试集中无关位较多而测试模式之间变化位较少的特征，应用贪心算法对预先计算的测试集进行了重新排序，尽可能的使相邻的向量间具有最少的不同位，排列成一个最佳的差分向量序列，然后应用FDR码对差分向量序列进行编码,最后对压缩结果重新分块，按照一次压缩的流程进行二次压缩。在解压时，使用片上解压电路解压，能高效地还原出原测试集。最后通过对Soc部分标准电路硬故障集的测试结果显示，本方案具有较好的压缩率。(a new improved method was proposed in the paper,the method using Frequency-Directed Run-length(FDR codes)coding for the twice aimed at hard-fault. It fully takes advantage of the characters that there are many don’t-care bits in the test set but a few different bits between the test patterns, Then it applies the greed calculate way to sort the precomputed test sets and make the close together vector have the least different sites possibly. It uses the FDR codes to coding the vectors,then blocks the results and uses the FDR codes to compress for the second time. Decompression used of on-chip circuit extract unpack,it will be deoxidize the original test efficient.using the hard-fault to compress and the experimental results prove that the improved coding method of this paper has the better compression ratios has been proved at last. )

EZW的matlab程序 基于小波变换对图像进行压缩编码的研究(EZW the matlab procedure based on wavelet transform image coding research)

Huffman编码，使用哈弗曼树生成前缀码，把输入的字符编码并把原字符解码(Huffman code and decode)

ssr科学上网工具，该压缩文件已经配置好了，直接解压就可以使用了。(SSR scientific Internet access tool, the compressed file has been configured, the direct decompression can be used.)

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：  matlab 用PCA方法对图像进行压缩、还原(PCA method using matlab image compression, restore)

说明：  雷刚萨斯JPEG2000源代码，可以直接运行，霍夫曼编码(Legansas JPEG2000 source code, can be run directly, Huffman code)

RD点目标仿真算法,通过距离和方位压缩算法，对目标回波数据进行成像。(Point target simulation of RD)

非常好的视频压缩filter,可以实现mpeg2 mpeg1的视频压缩，用户可以自己选择码率(very good video compression filter can achieve mpeg1 mpeg2 video compression, Users can choose Rate)

BWT压缩方法描述，是一种被bzip2等数据压缩技术所使用的算法(The Burrows–Wheeler transform (BWT, also called block-sorting compression), is an algorithm used in data compression techniques such as bzip2.)