Description: ) Compression using huffman code
-with a number of bits k per code word
-provide huffman table
Huffman coding is optimal for a symbol-by-symbol coding with a known input probability distribution.This technique uses a variable-length code table for encoding a source symbol. The table is derived in a particular way based on the estimated probability of occurrence for each possible value of the source symbol .Huffman coding uses a specific method for representing each symbol, resulting in a prefix code that expresses the most common characters using shorter strings of bits than those used for less common source symbols.The Huffman coding is a procedure to generate a binary code tree.
-) Compression using huffman code
-with a number of bits k per code word
-provide huffman table
Huffman coding is optimal for a symbol-by-symbol coding with a known input probability distribution.This technique uses a variable-length code table for encoding a source symbol. The table is derived in a particular way based on the estimated probability of occurrence for each possible value of the source symbol .Huffman coding uses a specific method for representing each symbol, resulting in a prefix code that expresses the most common characters using shorter strings of bits than those used for less common source symbols.The Huffman coding is a procedure to generate a binary code tree.
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Author:ria |
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Description: Codes".
Huffman coding uses a specific method for choosing the representation for each symbol, resulting in a prefix code (sometimes called "prefix-free codes") (that is, the bit string representing some particular symbol is never a prefix of the bit string representing any other symbol) that expresses the most common characters using shorter strings of bits than are used for less common source symbols. Huffman was able to design the most efficient compression method of this type: no other mapping of individual source symbols to unique strings of bits will produce a smaller average output size when the actual symbol frequencies agree with those used to create the code. A method was later found to do this in linear time if input probabilities (also known as weights) are sorted.-Codes".
Huffman coding uses a specific method for choosing the representation for each symbol, resulting in a prefix code (sometimes called "prefix-free codes") (that is, the bit string representing some particular symbol is never a prefix of the bit string representing any other symbol) that expresses the most common characters using shorter strings of bits than are used for less common source symbols. Huffman was able to design the most efficient compression method of this type: no other mapping of individual source symbols to unique strings of bits will produce a smaller average output size when the actual symbol frequencies agree with those used to create the code. A method was later found to do this in linear time if input probabilities (also known as weights) are sorted.
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Author:muhammad |
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Description: huffman coding implementation by matlab with different D and ability that you assign your data as manualy or random.It s very effective.please test it. Platform: |
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Author:hamed |
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Description: Implementation of JPEG compression algorithm with JFIF header being appended.This project involves writting code for following steps : Chroma subsampling,partitioning ,level shifting,DCT,quantization,zigzag scanning(involves DC differential coding & AC huffman coding) & adding jfif header following the rules specified in itu-t.81. Platform: |
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Author:dwn |
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Description: 数字图像处理中的编码技术。本程序对输入的图像进行哈夫曼huffman编码，显示原图像的熵、编码后的平均码字长度、并能够根据编码重建出图像。本程序使用C++混合编程，已经编译生成了Matlab库文件，无需再与C++链接。程序包括源程序和源图像，以及编码后的结果图像。-Encoding digital image processing technology. The procedure of the input image Huffman huffman coding to show the original image entropy, encoded average code length, and be able to reconstruct the image according to encoding. The program uses C++ mixed programming, has compiled a Matlab library files generated, do not need to link with C++. Programs include source code and source images, and encoding the results of the image. Platform: |
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Author:刘雨相 |
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Description: 利用Matlab编程实现对lena.bmp灰度图象进行QF=50和QF=40的压缩和解压缩，比较二者的PSNR，并且利用霍夫曼编码模拟信道中传输图象。通过了Matlab2009A测试。-Using Matlab program to compress and decompress the gray image Lena.bmp at QF = 50 and QF = 40,as well as comparing the result of two situation.Then using Huffman coding analog channels transmitted images. Adopted Matlab2009A test. Platform: |
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Author:Alex |
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Description: 本文件描述了哈夫曼编码的原理，以及用Matlab软件实现哈夫曼编码，即给出一个文本，即可用哈夫曼原理实现编码。-This paper describes the principles of Huffman coding, and Huffman coding with Matlab software, that gives a text, you can achieve with the principle of Huffman coding. Platform: |
Size: 14336 |
Author:Ling Li |
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Description: 哈夫曼编码的matlab实现，带注释。附带哈夫曼编码原理简介和流程图 哦-Matlab implementation of the Huffman encoding with the comment. Comes with Huffman coding theory, Introduction and Roadmap Platform: |
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Description: Huffman code的matlab程序，用一幅图像作为training image得到像素的Huffman编码，然后编码另外一幅图像，求得average code length。-Huffman code of matlab program, with an image as a training image pixel Huffman coding, then coded another image obtained average code length. Platform: |
Size: 139264 |
Author:刘星宇 |
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Description: 毕业设计中，用Matlab实现了机器人最优路径规划中的全局路径规划，算法采用的是基于方向权的temp二叉树算法，同时结合了哈夫曼编码二叉树的temp1综合。
-Graduation design, using Matlab to achieve the optimal path planning of robot global path planning algorithm uses a binary tree algorithm based on the direction of the right temp, combined with the binary tree Huffman coding temp1 comprehensive. Platform: |
Size: 9216 |
Author:gkyhxs |
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Description: 毕业设计中，用Matlab实现了机器人最优路径规划中的全局路径规划，算法采用的是基于方向权的 LzTInj 二叉树算法，同时结合了哈夫曼编码二叉树的 BmjBotL综合。-Graduation design, using Matlab to achieve the optimal path planning of robot global path planning algorithm uses a binary tree algorithm based on the direction of the right LzTInj , combined with the binary tree Huffman coding BmjBotL comprehensive. Platform: |
Size: 7168 |
Author:yerech |
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Description: 毕业设计中，用Matlab实现了机器人最优路径规划中的全局路径规划，算法采用的是基于方向权的 ltLuYi 二叉树算法，同时结合了哈夫曼编码二叉树的 NOFlZUO综合。-Graduation design, using Matlab to achieve the optimal path planning of robot global path planning algorithm uses a binary tree algorithm based on the direction of the right ltLuYi , combined with the binary tree Huffman coding NOFlZUO comprehensive. Platform: |
Size: 9216 |
Author:rwyprz |
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Description: 毕业设计中，用Matlab实现了机器人最优路径规划中的全局路径规划，算法采用的是基于方向权的 iGEZgr 二叉树算法，同时结合了哈夫曼编码二叉树的 tMWGmZl综合。-Graduation design, using Matlab to achieve the optimal path planning of robot global path planning algorithm uses a binary tree algorithm based on the direction of the right iGEZgr , combined with the binary tree Huffman coding tMWGmZl comprehensive. Platform: |
Size: 7168 |
Author:eorsnv |
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Description: 毕业设计中，用Matlab实现了机器人最优路径规划中的全局路径规划，算法采用的是基于方向权的 hYkRrD 二叉树算法，同时结合了哈夫曼编码二叉树的 dLywUAC综合。-Graduation design, using Matlab to achieve the optimal path planning of robot global path planning algorithm uses a binary tree algorithm based on the direction of the right hYkRrD , combined with the binary tree Huffman coding dLywUAC comprehensive. Platform: |
Size: 9216 |
Author:jiqbdh |
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Description: 用matlab实现哈夫曼编码，哈夫曼编码是一种无失真的编码方式，可以在提高传输速率的情况下不减少信息熵。(Huffman coding with matlab, Huffman coding is a distortion-free coding, you can increase the transmission rate without reducing the information entropy.) Platform: |
Size: 1024 |
Author:老朋友1214
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Description: 使用matlab实现的jpeg基本系统，输入为灰度图像，输出为使用‘0’‘1’字符表示的字符串。
包括dct编码与解码、量化与反量化，Huffman编码与解码(The JPEG basic system implemented with MATLAB is entered into a gray image, and the output is a string represented with a '0' '1' character.
Including DCT coding and decoding, quantization and counter quantization, Huffman coding and decoding) Platform: |
Size: 224256 |
Author:笨笨木木
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