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data compression

The project includes several popular compression algorithm implementations, specifically:1, Arithmetic coding 2, huffman coding 3, LZ77 coding 4, LZ78 coding 5, LZW 6, RLE 7, DCT , 8 Furie transform, is a very good data compression algorithm and realization of study materials....
  数据压缩        C++     

huffman compression

This is a compression/Decompression routine using huffman Encoding/Decoding, and works best on normal text files. The code is *highly* optimized, and to show how fast this is I can mention another code sample found here on planetsourcecode (from August 1st 2000) which also uses huffman Encoding. Tha...
  Crypt_Decrypt algrithms        VB     

huffman coding

Felicity huffman-encodes a character to a text, by reading of the text, the statistical frequency of each character appears in the text, identifying Felicity huffman coding, and then output will be encoded in the new text. Translation of the text....
  Algorithm        C++     

huffman coding long efficiency

#include<stdio.h> #include<iostream> #include<string.h> #include<stdlib.h> using namespace std; const MAXSIZE=100; typedef struct huffmantree { char cname; int weight,mark; struct huffmantree *parent,*lchild,*rchild,*next; }Hftree,*linktree;...
  c++        C++     

huffman compression

huffman Image compression algorithm. In this the  image input is given and then it get compressed and shows its result. each pixel is identified and then compressed based on the number of occurrence and then finally compress its size that smaller  ...
  Matlab        Matlab     

huffman compression decompressor

huffman compression decompressor files support compression of binary files, compressed, to save the original file names MFC projects...
  Algorithm        C++     

huffmancoding

Adaptive huffman Coding ....
  Java Development        C++     

huffman coding

Given source-probability symbols, automatic huffman coding, build a binary tree, print symbol encoding, and can print a binary tree shape, helpful for learning of binary tree data structure section....
  数据结构        C++     

Adaptive huffman

i hava a big problem.this is my code for adaptive huffman compression.what im doing is that im reading a character from a file,making the tree an updating the tree.after encoding the data is in binary form.im taking 7bits at a time,converting them in a number from 0-127.than this number is converted...
  Java Development        Java     

huffman Encoder and Decoder for Image compression

This is a sample huffman CODEC implemented for image compression. You can run this code for compressing image using huffman algorithm. For sure, there are better algorithms and standards for image compression (like JPEG, JPEG-2000) who use huffman Algorithm inherently. So, using this project yo...
  Image Processing        C     

Simultaneous data compression and encryption

SIMULTANEOUS DATA compression,ENCRYPTION AND DECRYPTION                                        &nb...
  Windows        Java     

huffman coding

In computer science and information theory, huffman coding is an entropy encoding algorithm used for lossless data compression. The term refers to the use of a variable-length code table for encoding a source symbol (such as a character in a fil...
  Algorithm        C++     

compression using wavelette on matlab

with this programme you can do your compression and it give you also the performance this compression ,so you can compare with different wavelette method and see the differece....
  Matlab        Matlab     

huffman encoding and decoding in JAVA

This is my report for my Advanced Data Structures and Algorithms class. The huffman Code is the algorithm behind file compression and decompression. The idea of this algorithm is to create a variable length coding system such that frequent characters will have shorter codes as opp...
  Multimedia        Java     

JPEG compression Algorithms

The basic idea of data compression is to reduce the data correlation. By applying Discrete Cosine Transform (DCT),  the data in time (spatial) domain can be transformed into frequency domain. Because of the less sensitivity of human vision  in higher frequency, we can comp...
  Image Processing        Matlab     

static huffman using c++ (include intructions)

- First , the program will scan compressed files and save input character in file , ( nhapDuLieu function ( ) ) and then sorted in order of the appearance of the regular characters . - Next, used to encrypt data to create huffman tree by taoCayhuffman method ( ) . Data will be stored in the output...
  Algorithm        C++     

image compression using huff man coding

    function CODE = huffman(p)     %huffman Builds a variable-lenght huffman code for a symbol source.     %CODE = huffman(P) returns a huffman code as binary strings in cell     %array CODE for input symbol probability vector P. Each wo...
  Image Processing        Matlab     

huffman Coding

A String is given; the problem is to encode the string using huffman codes (assigning bits to each character according to the frequency of character in the string) and then decoding the encoded string using prefix free code. A prefix code can be easily represented by a binary tree. The e...
  Algorithm        Java     

compression

THIS METHOD INVOLVE compression OF MEDICAL IMAGE USING DCT AND IWT AND EVALUATE ALL THE PERFORMANCE SIGNAL; TO NOISE RATIO, PSNR, MSSSIM ,...
  Matlab        Matlab     

Black and white images huffman coding

huffman coding to image, and then using huffman coding the coding on another image, and verify that it is valid on another image, including the average code length....
  Graph        C++     

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