SPIHT

RAR密码破解工具_RAR Password Unlocker 汉化完美注册双选版(RAR password cracking tool)

melp编解码，压缩率2.4Kbps，1.2Kbps(MELP codec, compression rate 2.4Kbps, 1.2Kbps)

bnpts点云文件 进过压缩处理 大约100000个点(bnpts)

代码实现了基于ARM7的MPEG-4视频解码器，由C代码和汇编混合编写，已经在ARM7TDMI平台调试通过。(Code based on the ARM7 realize the MPEG-4 video decoder, from C code and compilation of mixed-prepared, has been adopted ARM7TDMI debugging platform.)

说明：  传统游程编码，并且又对游程编码进行了一定程度的改进。(The traditional run-length coding has improved it to some extent.)

说明：  这是相关编码的标准和实现，是密码学的和数据压缩的基础。(This is the relevant coding standards and implementation, is cryptography and data compression basis.)

说明：  主要用于图象压缩的库，适合JPEG2000，有损压缩，无损压缩，使用c/c++编译。(The library mainly used for image compression, suitable for JPEG2000, lossy compression, lossless compression, using c/c++ compilation.)

说明：  JpegLs源码,由UBC和HP在2000年联合开发(JpegLS project,developed by UBC and HP.)

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

呃，就是用赫夫曼算法写的压缩解压程序。非常粗糙，只能压缩英文文章。因为里面的字符概率是基于自然语言的，源代码之类的没法压缩。而且会抛弃最后几个字母，嘿嘿。为了交作业，没有好好写。改一下下应该能挺好的。压缩比能到60 吧(Uh, is to use Huffman compression decompression algorithm written procedures. Very rough, only compress English articles. Because there is the probability of characters based on natural language, the source code and the like can not compressed. And will abandon the last few letters, hehe. For homework, not properly written. The following should be able to change it quite good. Compression ratio to 60 of it can be)