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Description:
The deflation algorithm used by gzip (also zip and zlib) is a variation of
LZ77 (Lempel-Ziv 1977, see reference below). It finds duplicated strings in
the input data. The second occurrence of a string is replaced by a
pointer to the previous string, in the form of a pair (distance,
length). Distances are limited to 32K bytes, and lengths are limited
to 258 bytes. When a string does not occur anywhere in the previous
32K bytes, it is emitted as a sequence of literal bytes. (In this
description, `string must be taken as an arbitrary sequence of bytes,
and is not restricted to printable characters.)
-The deflation algorithm used by gzip (also zip and zlib) is a variation of LZ77 (Lempel - Ziv 1977. see reference below). It finds duplicated Stri stayed in the input data. The second occurrence of a string is replaced by a pointer to the previous s tring, in the form of a pair (distance, length). Distances are limited to 32K bytes, and lengths are limited to 258 bytes. When a Stri ng does not occur anywhere in the previous 32K by tes, it is emitted as a sequence of literal bytes. (In this description, `string must be taken as an arbitrary sequence o f bytes, and is not restricted to printable characters. )
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Size: 5143890 |
Author: MCU2000 |
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Description: My (so called) HiP compression algorithm as console mode
utility. It s a hybrid of Lempel-Ziv 77 and Adaptive Huffman
encoding (Huffman + LZ77 ZIP = HiP) with a word prefix hash
algorithm etc.-My (so called) a compression algorithm HiP 's console mode utility. It's a hybrid of Lempel-Z iv 77 and Adaptive Huffman encoding (Huffman LZ HiP ZIP = 77) with a word prefix hash algorithm et c.
Platform: |
Size: 53517 |
Author: 郭春阳 |
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Description: This scheme is initiated by Ziv and Lempel [1]. A slightly modified version is described by Storer and Szymanski [2]. An implementation using a binary tree is proposed by Bell [3]. The algorithm is quite simple: Keep a ring buffer, which initially contains \"space\" characters only. Read several letters from the file to the buffer. Then search the buffer for the longest string that matches the letters just read, and send its length and position in the buffer.
Platform: |
Size: 3660 |
Author: 冰冰 |
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Description: Lempel-Ziv 压缩算法文档--Lempel-Ziv compression algorithm documents
Platform: |
Size: 44032 |
Author: 站长 |
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Description: This scheme is initiated by Ziv and Lempel [1]. A slightly modified version is described by Storer and Szymanski [2]. An implementation using a binary tree is proposed by Bell [3]. The algorithm is quite simple: Keep a ring buffer, which initially contains "space" characters only. Read several letters from the file to the buffer. Then search the buffer for the longest string that matches the letters just read, and send its length and position in the buffer.
Platform: |
Size: 3072 |
Author: 冰冰 |
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Description:
The deflation algorithm used by gzip (also zip and zlib) is a variation of
LZ77 (Lempel-Ziv 1977, see reference below). It finds duplicated strings in
the input data. The second occurrence of a string is replaced by a
pointer to the previous string, in the form of a pair (distance,
length). Distances are limited to 32K bytes, and lengths are limited
to 258 bytes. When a string does not occur anywhere in the previous
32K bytes, it is emitted as a sequence of literal bytes. (In this
description, `string must be taken as an arbitrary sequence of bytes,
and is not restricted to printable characters.)
-The deflation algorithm used by gzip (also zip and zlib) is a variation of LZ77 (Lempel- Ziv 1977. see reference below). It finds duplicated Stri stayed in the input data. The second occurrence of a string is replaced by a pointer to the previous s tring, in the form of a pair (distance, length). Distances are limited to 32K bytes, and lengths are limited to 258 bytes. When a Stri ng does not occur anywhere in the previous 32K by tes, it is emitted as a sequence of literal bytes. (In this description, `string must be taken as an arbitrary sequence o f bytes, and is not restricted to printable characters. )
Platform: |
Size: 5143552 |
Author: MCU2000 |
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Description: 算术编码的应用实例matlab版本
1.可以对字符进行算术编码
2.开头不必制定字符串的大小
3.编码精度高，达到小数点8位以上
4.以函数的形式给出，易于调用和移值实现
5.显示界面人机交互较出色
-arithmetic coding examples of the application of a version of Matlab. Be right characters arithmetic coding 2. Not the beginning develop the size of strings 3. Coding accuracy, reaching more than eight decimal point four. to function in the form given, easy to call and shifts to achieve 5. HCI interface shows more successful
Platform: |
Size: 1024 |
Author: 方周 |
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Description: My (so called) HiP compression algorithm as console mode
utility. It s a hybrid of Lempel-Ziv 77 and Adaptive Huffman
encoding (Huffman + LZ77 ZIP = HiP) with a word prefix hash
algorithm etc.-My (so called) a compression algorithm HiP 's console mode utility. It's a hybrid of Lempel-Z iv 77 and Adaptive Huffman encoding (Huffman LZ HiP ZIP = 77) with a word prefix hash algorithm et c.
Platform: |
Size: 53248 |
Author: 郭春阳 |
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Description: Implementation for Lempel-Ziv code.
Encoder and decoder are separated. The input is a file and the output is written in another file.
Platform: |
Size: 2048 |
Author: Calin Juravle |
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Description: Ajuda com a Teoria sobre Lempel-Ziv
Platform: |
Size: 1024 |
Author: Paulo |
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Description: 一个简单的huffman的c语言程序，程序写的较为简单，重点利用数据结构中的二叉树算法。初学者可以看看，作为不同的思路。-A simple huffman c-language program, the program written in relatively simple, focusing on the use of the binary tree data structure algorithms. Beginners can see, as a different way of thinking.
Platform: |
Size: 4030464 |
Author: xiongjun |
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Description: Very simple class to ZIP and UNZIP files (Streams actually). Based on Ziv-Lempel basic algorithm.
Simple.. not fast nor really "compressive" :).
Create(A) a ZIP by passing in the stream A you want as source/destination. Call Add(B) to compress a stream B into A. Call Extract(B) to decompress stream A into B.
Platform: |
Size: 3072 |
Author: David |
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Description: This a full C++ OOP implementation of a Lempel Ziv compressor/decompressor. It does not have an entropy coder. The window size has to be a power of 2, and atleast 1KB in size (1024 bytes), but the match lengths can be anything.- This is a full C++ OOP implementation of a Lempel Ziv compressor/decompressor. It does not have an entropy coder. The window size has to be a power of 2, and atleast 1KB in size (1024 bytes), but the match lengths can be anything.
Platform: |
Size: 47104 |
Author: jaggee |
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Description: 图像无损压缩算法代码全集,适合做图像无损压缩研究的入门人员收藏研究.-AR002
Contains a complete archiver by Haruhiko Okumura. The archiver uses
an LZ engine whose output is compressed with static Huffman. The
file is chopped into pieces which all get their own independent
set of Huffman tree s. ARJ 2.41, ZIP 2.0 and PKZIP 2.04g use
essentially the same method. ZOO and LHA even use excactly the
same method.
LZW
The famous Lempel Ziv Welch compressor. This version by Kent Williams.
COMP
Arithmetic compression written by Mark R. Nelson. Published in
Dr Dobbs february 1991. Contains a basic arithmetic compressor
and a higher order arithmetic compressor.
ASH
A "brother" of the higher order compressor from Nelson written by
Charles Ashford. Ingenious program which makes use of the very limited
memory of the PC and still can process large files. One price to pay,
it is VERY slow. The tigthest compressor in the Dr Dobbs compression
contest.
FIN
Finish submission to the Dr Dobbs contest w
Platform: |
Size: 126976 |
Author: idlerrf |
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Description: This matlab code compresses a given text using Lempel-Ziv-Welch algorithm
Platform: |
Size: 1024 |
Author: Aswathy |
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Description: The deflation algorithm used by zip and gzip is a variation of LZ77
(Lempel-Ziv 1977, see reference below). It finds duplicated strings in
the input data. The second occurrence of a string is replaced by a
pointer to the previous string, in the form of a pair (distance,
length). Distances are limited to 32K bytes, and lengths are limited
to 258 bytes. When a string does not occur anywhere in the previous
32K bytes, it is emitted as a sequence of literal bytes. (In this
description, string must be taken as an arbitrary sequence of bytes,
and is not restricted to printable characters.)
-gzip compress and decompress
The deflation algorithm used by zip and gzip is a variation of LZ77
(Lempel-Ziv 1977, see reference below). It finds duplicated strings in
the input data. The second occurrence of a string is replaced by a
pointer to the previous string, in the form of a pair (distance,
length). Distances are limited to 32K bytes, and lengths are limited
to 258 bytes. When a string does not occur anywhere in the previous
32K bytes, it is emitted as a sequence of literal bytes. (In this
description, string must be taken as an arbitrary sequence of bytes,
and is not restricted to printable characters.)
Platform: |
Size: 299008 |
Author: Dennis |
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Description: Data compression with LZ77 interface -LZ77 (Lempel-Ziv-1977) is a simple but surprisingly effective form of data compression that takes an entirely differnt approach from Huffman coding. LZ77 is a dictionary-based method
Platform: |
Size: 11264 |
Author: pecker168 |
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Description: 一个非常有用的计算lempel-ziv复杂度的程序，可用于状态监测等问题。-A useful lempel-ziv complexity calculation procedures, can be used for condition monitoring.
Platform: |
Size: 1024 |
Author: |
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Description: 1965年苏联数学家Kolmogolov提出利用信源序列的结构特性来编码。而两位以色列研究者J.Ziv和A.Lempel独辟蹊径，完全脱离Huffman及算术编码的设计思路，创造出了一系列比Huffman编码更有效，比算术编码更快捷的通用压缩算法。将这些算法统称为LZ系列算法。-1965 Soviet mathematician Kolmogolov proposed use of the structural characteristics of the source sequences to encode. The two Israeli researchers J.Ziv and A.Lempel inventive, completely out of Huffman and arithmetic coding design ideas, created a series of more efficient than Huffman coding, arithmetic coding more efficient than general purpose compression algorithms. These algorithms will be collectively referred to as LZ series algorithms.
Platform: |
Size: 1024 |
Author: fox |
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Description: Lempel–Ziv–Welch (LZW) is a universal lossless data compression algorithm created by Abraham Lempel, Jacob Ziv, and Terry Welch. It was published by Welch in 1984 as an improved implementation of the LZ78 algorithm published by Lempel and Ziv in 1978. The algorithm is simple to implement, and has the potential for very high throughput in hardware implementations.
Platform: |
Size: 436224 |
Author: fatihafifi |
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