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LZMA压缩/解压缩,接口简单,使用方便,内存占用经过合理安排,效率非常高,支持多线程。-LZMA compress/decompress, interface is very simple, easy to use, high efficiency, lower memory use, support multi thread
Update : 2024-05-05 Size : 130048 Publisher : 江浩

This project features a complete JPEG Hardware Compressor (standard Baseline DCT, JFIF header) with 2:1:1 subsampling, able to compress at a rate of up to 24 images per second (on XC2V1000-4 @ 40 MHz with resolution 352x288). Image resolution is not limited. It takes an RGB input (row-wise) and outputs to a memory the compressed JPEG image. Its quality is comparable to software solutions.
Update : 2024-05-05 Size : 3416064 Publisher : Bill Guan

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用BP神经网络实行彩色图像压缩matlab-Bp network color image compression
Update : 2024-05-05 Size : 1024 Publisher : liuwei

rle 解压算法,可以压缩和解压文件,也可以用于自己加密,用的时候改后缀为jar-rle decompression algorithm, can compress and decompress files, encryption can also be used for their own use when the suffix change for the jar
Update : 2024-05-05 Size : 6144 Publisher : hexiao

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Discrete cosine transform to compress data.
Update : 2024-05-05 Size : 217088 Publisher : Tung

数据压缩,自动预测编码技术,matlab实现,带图-Data compression, automatic predictive coding technique, matlab achieve
Update : 2024-05-05 Size : 290816 Publisher : dyg


Update : 2024-05-05 Size : 9864192 Publisher : chenjie

code to compress data usin huffman algorithm
Update : 2024-05-05 Size : 49152 Publisher : blanca

This code compress the image using wavelets. Both gray scale and RGB images can be applied and some
Update : 2024-05-05 Size : 1024 Publisher : vt2k8

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.
Update : 2024-05-05 Size : 2048 Publisher : 张志刚

压缩解压工具7-zip源代码,包括汇编、c、c++三种语言版本及其说明文档。-the source code of the compress/decompress tool 7-zip,containing three language versions of asm、c、c++ and its description document.
Update : 2024-05-05 Size : 1215488 Publisher :

bmp->jpg的好工具,很难得的,放心试用-bmp-> jpg good tool, it is difficult to get, rest assured that the trial
Update : 2024-05-05 Size : 8192 Publisher : 卡敌奴

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一个用C#封装的类,用于压缩和解压文件和文件夹。-A package using C# classes for compression and decompression of files and folders.
Update : 2024-05-05 Size : 4096 Publisher : Jeff

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压缩字符串及解压(效果非常好且可以输出)-compress
Update : 2024-05-05 Size : 191488 Publisher : zhangyang

LZW压缩方法的source code,用C写的,请参考-source code for LZW compress, C language...
Update : 2024-05-05 Size : 7168 Publisher : Jonathan

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CCITT的G729压缩。内含 多个变种-CCITT G729 Audio Compress
Update : 2024-05-05 Size : 18432 Publisher : 朱虎

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String Compress/Decompre-String Compress/Decompress
Update : 2024-05-05 Size : 1024 Publisher : RedFox

Compress / DeCompress routine in asm-Compress/DeCompress routine in asm
Update : 2024-05-05 Size : 2048 Publisher : infothem

The EZW encoder is based on progressive encoding to compress an image into a bit stream with increasing accuracy. This means that when more bits are added to the stream, the decoded image will contain more detail, a property similar to JPEG encoded images. It is also similar to the representation of a number like Every digit we add increases the accuracy of the number, but we can stop at any accuracy we like. Progressive encoding is also known as embedded encoding, which explains the E in EZW. -The EZW encoder is based on progressive encoding to compress an image into a bit stream with increasing accuracy. This means that when more bits are added to the stream, the decoded image will contain more detail, a property similar to JPEG encoded images. It is also similar to the representation of a number like Every digit we add increases the accuracy of the number, but we can stop at any accuracy we like. Progressive encoding is also known as embedded encoding, which explains the E in EZW.
Update : 2024-05-05 Size : 57344 Publisher : manikandan

图像压缩去噪增强锐化程序,供大家参考。 包括:数字图像矩阵数据的显示及其傅立叶变换 二维离散余弦变换的图像压缩 采用灰度变换的方法增强图像的对比度 采用二维中值滤波函数medfilt2对受椒盐噪声干扰的图像滤波 采用MATLAB中的函数filter2对受噪声干扰的图像进行均值滤波 图像的自适应魏纳滤波 运用5种不同的梯度增强法进行图像锐化 图像的高通滤波和掩模处理 利用巴特沃斯(Butterworth)低通滤波器对受噪声干扰的图像进行平滑处理 利用巴特沃斯(Butterworth)高通滤波器对图像进行锐化处理--Sharpen Image Compression Denoising enhanced procedures for your reference. Include: digital image data display matrix and its Fourier transform two-dimensional discrete cosine transform image compression method using gray-scale transformation of the contrast-enhanced images using two-dimensional median filter function by medfilt2 of salt and pepper noise image filtering using MATLAB The function affected by noise interference filter2 images mean filter Adaptive Image Filtering Wehner use five kinds of different gradient method to enhance image sharpening images of high-pass filtering and mask treatment using Butterworth (Butterworth) low pass filter noise by smoothing the images deal with the use of Butterworth (Butterworth) high-pass filter for sharpening images treatment
Update : 2024-05-05 Size : 11264 Publisher : chen peilin
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