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This file contains a new and improved version of the Huffman coder, (June 29. 2001). The name is Huff06.m. There are also some additional files which are helpful when using Matlab for data compression: quantizer, different variants of run-length-enco
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常用图像压缩编码码matlab实现。包括:DM编码、变换编码(FFT和DCT)、算术编码、行程编码、Huffman编码、线性预测编码和一个近似的JPEG编码过程。非常适合入门用户实践。,Commonly used image compression coding matlab code to achieve. Including: DM coding, transform coding (FFT and DCT), arithmetic coding, Run-Length Coding, Hu
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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 -
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RLE又叫Run Length Encoding,是一个针对无损压缩的非常简单的算法。它用重复字节和重复的次数来简单描述来代替重复的字节。尽管简单并且对于通常的压缩非常低效,但它有的时候却非常有用(例如,JPEG就使用它)。 RLE可以使用很多不同的方法。基本压缩库中详细实现的方式是非常有效的一个。一个特殊的标记字节用来指示重复节的开始,而不是对于重复非重复节都coding run。因此非重复节可以有任意长度而不被控制字节打断,除非指定的标记字节出现在非重复节(顶多以两个字节来编码)的稀有情况下
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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
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基于C++语言的JPEG编码,添加符号(游程长度、占用位数等)用霍夫曼编码,幅度值用修改的二进制正常编码-JPEG encoding on C++ language, add a symbol (run length, take bits, etc.) using Huffman coding, the amplitude values are modified normal binary code
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