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DCT
- 基于Matlab GUI的图像的DCT，自由调节压缩率，计算峰值信噪比，并图形化对比还原图像-Matlab GUI for image-based DCT, freely adjust compression rates, the peak signal to noise ratio, and reduction of image contrast graphic
image-compression-with-PCA
- 对400幅灰度图像用分块PCA的方法进行压缩，进行通信时只用传输主元和特征向量。其中，pcaxiefangcha.m用于图像压缩，imresume.m用于图像恢复和部分图像的显示，chaweight.m用于绘制特征值比重-主元个数关系图，crdraw.m用于绘制压缩比-主元个数关系图，psnrdraw.m用于绘制总误差PSNR-主元个数关系图，psnrlocation.m用于绘制单幅图像误差PSNR分布图。-On the 400 block with a gray image compressi
LM_huffman
- 本程序在MATLAB环境下，对TXT文档中的字符串进行读取，并进行霍夫曼压缩编码，最终输出压缩后的序列长度和压缩比-This procedure in the MATLAB environment, TXT document on the string for reading, and Huffman coding, the final output of compressed sequence length and compression ratio
jpeg2avihojoon
- This a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN -
jpeg_encode+decoderhojoon
- This a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN -
rgbquadtreehojoon
- This a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN -
huffman
- huffman编码对图形编码并进行图形重现的仿真程序，并计算了相应的压缩率。-huffman coding of graphics and graphical code to reproduce the simulation program, and calculate the corresponding compression ratio.
1
- 用分段IFS拟合离散序列的matlab程序 看过Hayes的一篇文章 “Using Iterated Function System to Model Discrete sequences”，我用文章中所用的分段IFS模型写了一段matlab程序以拟合一段网络流量（所用的网络流量是用txt文档保存的一维时间序列）。 程序有用分段IFS编码然后再解码合成数据的过程，还包括计算压缩比。 -IFS fitting with discrete sub-sequences of matlab
wangwei20062218
- 该程序利用Matlab编写，并带有GUI截面。实现了任意格式图像压缩的功能。并且可以对比显示压缩前后图像，显示压缩比例和压缩时间。-The program prepared by the use of Matlab, and with a GUI cross-section. Image compression format to achieve an arbitrary function. Compared before and after the show and can compress
newmethod
- golomb compression ratio and entropy
Compress
- 按照用户输入的压缩率，完成对灰度图的压缩-Compression ratio in accordance with user input to complete the compression of grayscale
Compression
- Calculate the Mean Square Error (MSE) and the Peak Signal to Noise Ratio (PSNR) for different JPEG compression ratios.
jpeg
- 利用游程编码和哈弗曼编码实现灰色图片的压缩和解码，压缩比可达15倍-Using run-length encoding and Hafu Man Coding and decoding of gray image compression, the compression ratio up to 15 times
mainLZ77
- 本程序主要实现LZ77的编码以及解码，并且对压缩率进行了说明，简单明了-The main achievement of LZ77 encoding process and decoding, and are described on the compression ratio, simple
Experiment4
- 对图像进行Huffman编码并计算其压缩比-Huffman coding of images and calculate the compression ratio
comprsnMapImgs
- Digital maps can best stored and distributed electronically using compressed raster image formats.We introduce as to rage system for the map images that supports compact storage size,decompression of partial image,and smooth transitions between var
ezw20100301
- 对原始的EZW算法德扫描顺序进行改进，使得每个方向上的零树根增多，大大增加了压缩率。-EZW algorithm on the original scan order to improve Germany, so that each direction of the zero roots increased, greatly increased the compression ratio.
tuxiangyasuo
- 利用Matalab软件分别编写子函数实现数字图像压缩及解压缩处理，并统计分析压缩处理算法所能够实现的压缩比及解压图像和原始图像间的均方根误差。-Functions were written by Matalab software for digital image compression and decompression processing, and statistical analysis of compression algorithms to achieve the compressi
Huffman
- 实现哈夫曼编码的matlab程序，可用于图像压缩处理，还可以计算出压缩率。-Matlab program to achieve Huffman coding can be used for image compression, the compression ratio can be calculated.
wave-let-based-compression
- this compression based wavelet decomposition the compression ratio would be good