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huff
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)
- 2013-05-26 15:23:59下载
- 积分:1
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SPIHT-dwt-bandelet
基于wavelet和bandelet的spiht图像压缩!(And wavelet-based image compression spiht the bandelet!)
- 2009-04-06 18:36:17下载
- 积分:1
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EZW
EZW算法的matlab代码,希望对大家有用(EZW algorithm matlab code, everyone would like to be useful)
- 2021-04-07 16:39:01下载
- 积分:1
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calic压缩和解压缩算法 matlab
说明: calic压缩和解压缩算法的C++代码....(This is a commonly used CALIC codec C language.)
- 2020-05-12 23:14:01下载
- 积分:1
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3349119melp
melp编解码,压缩率2.4Kbps,1.2Kbps(MELP codec, compression rate 2.4Kbps, 1.2Kbps)
- 2021-03-12 16:29:25下载
- 积分:1
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RLPack_Basic
RLPack is a software that gives you the power to compress your executables and dynamic link libraries in a way that keeps them small and has no effect on compressed file functionality. Further more RLPack protects your files from modification and has several protection options which help protecting your files from being changed or cracked. But compression and protection does not stop there. RLPack with iBox module can pack your dynamic link libraries and place them inside the main executable so they can not be modified. They are extracted directly to memory (or optionally to disk) hiding their presence and enabling you to keep your dynamic link libraries safe from being used by third party programs or users.
- 2013-10-24 02:41:58下载
- 积分:1
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x264dateflow
说明: 文件介绍了x264程序的算法流程表,每个函数的内容详细介绍在里面 (Document describes the algorithm flow chart x264 programs, and detailed description of each function in it)
- 2011-04-15 21:44:43下载
- 积分:1
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JPEG2000-library-source-code
JPEG2000库源代码(最新的JPEG2000标准源代码)(JPEG2000 library source code)
- 2012-12-03 21:32:19下载
- 积分:1
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200430481
赫夫曼编译码器:
用哈夫曼编码进行通信可以大大提高信道利用率,缩短信息传输时间,降低传输成本。但是,这要求在发送端通过一个编码系统对待传数据预先编码,在接收端将传来的数据进行译码(复原)。对于双工信道(即可以双向传输信息的信道),每端都需要一个完整的编/译码系统。试为这样的信息收发站写一个哈夫曼码的编/译码系统。
[基本要求]一个完整的系统应具有以下功能:
(1)I:初始化(Initialization)。从终端读入字符集大小n,以及n个字符和n个权值,建立哈夫曼树,并将它存于文件hfmTree中。
(2)E:编码(Encoding)。利用已建好的哈夫曼树(如不在内存,则从文件hfmTree中读入),对文件ToBeTran中的正文进行编码,然后将结果存入文件CodeFile中。
(3)D:译码(Decoding)。利用已建好的哈夫曼树将文件CodeFile中的代码进行译码,结果存入文件TextFile中。
(4)P:印代码文件(Print)。将文件CodeFile以紧凑格式显示在终端上,每行50个代码。同时将此字符形式的编码文件写入文件CodePrin中。
(5)T:印哈夫曼树(Tree printing)。将已在内存中的哈夫曼树以直观的方式(树或凹入表形式)显示出,同时将此字符形式的哈夫曼树写入文件TreePrint中。()
- 2021-03-06 09:19:30下载
- 积分:1
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Huffman
对于哈夫曼编码的仿真,可以计算平均码长、熵、压缩比、编码效率(Simulation of Huffman coding)
- 2020-12-11 23:09:18下载
- 积分:1