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Jpeg
视音频课程作业，对视频抽帧，对单张图片进行yuv420采样、DCT变化、量化以及反量化、IDCT变化(Jpeg Encoding & Decoding)
- 2017-12-15 11:25:46下载
- 积分：1
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JPEG
图像JPEG压缩算法，由8*8DCT变换，调用量化表进行量化，最后由Huffman编码完成算法(JPEG image compression algorithm, the 8* 8DCT transform, quantization table calls to quantify, and finally completed by the Huffman coding algorithm)
- 2009-05-09 13:24:58下载
- 积分：1
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w_ipp-sample-data
w_ipp-sample-data-compression，Intel，IPP函数库，文件数据快速压缩解压缩工具包。可以进行数据加密解密告诉处理( W_ipp-sample-data-compression, Intel, IPP library, file compression and decompression tool for fast data packet. You can tell the encryption and decryption of data processing)
- 2011-10-07 19:43:38下载
- 积分：1
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EZW
基于小波变换的图像压缩，使用EZW算法。(Image compression based on wavelet transform, using EZW algorithm.)
- 2018-05-14 21:20:28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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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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FDR-COMPRESS
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.
)
- 2009-05-12 14:32:23下载
- 积分：1
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SSFM_for_CNLSE_withPMD_without_ER_terms.m
solver PMD (optical fiber)
- 2010-02-26 05:08:56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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263yasuoyuv
263yasuoyuv.rar是把yuv-411格式文件压缩为*.263可直看(263yasuoyuv.rar is yuv-411 format for the*. 263 files can be read straight)
- 2008-06-12 20:20:49下载
- 积分：1
