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Description: The two C source files in this archive are specific to the TRS-80 Model 4 with
high-resolution graphics board. However, the code which performs Huffman enco-
ding and decoding is of general interest.
-The two C source files in this archive are specific to the TRS-80 Model 4 with high-resolution graphics board. However, the code which performs Huffman enco- ding and decoding is of general interest.
Platform: |
Size: 5691 |
Author: 王仲楼 |
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Description: The two C source files in this archive are specific to the TRS-80 Model 4 with
high-resolution graphics board. However, the code which performs Huffman enco-
ding and decoding is of general interest.
-The two C source files in this archive are specific to the TRS-80 Model 4 with high-resolution graphics board. However, the code which performs Huffman enco- ding and decoding is of general interest.
Platform: |
Size: 23233 |
Author: 王仲楼 |
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Description: Huffman 这个名字，程序员们至少会联想到二叉树和二进制编码。的确，我们总以 Huffman 编码来概括 D.A.Huffman 个人对计算机领域特别是数据压缩领域的杰出贡献。我们知道，压缩 = 模型 + 编码，作为一种压缩方法，我们必须全面考虑其模型和编码两个模块的功效；但同时，模型和编码两个模块又相互具有独立性。-Huffman, programmers will at least think of a binary tree and binary coding. Indeed, we always Huffman coding to summarize D. A. Huffman personal computer areas, especially in the field of data compression outstanding contribution. We know that the compression encoding = model, as a compression method, we must take full account of two model and coding module effectiveness; But at the same time, model and coding module of two mutual independence.
Platform: |
Size: 2272 |
Author: 亞男 |
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Description: Huffman 这个名字，程序员们至少会联想到二叉树和二进制编码。的确，我们总以 Huffman 编码来概括 D.A.Huffman 个人对计算机领域特别是数据压缩领域的杰出贡献。我们知道，压缩 = 模型 + 编码，作为一种压缩方法，我们必须全面考虑其模型和编码两个模块的功效；但同时，模型和编码两个模块又相互具有独立性。-Huffman, programmers will at least think of a binary tree and binary coding. Indeed, we always Huffman coding to summarize D. A. Huffman personal computer areas, especially in the field of data compression outstanding contribution. We know that the compression encoding = model, as a compression method, we must take full account of two model and coding module effectiveness; But at the same time, model and coding module of two mutual independence.
Platform: |
Size: 2048 |
Author: 亞男 |
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Description: The two C source files in this archive are specific to the TRS-80 Model 4 with
high-resolution graphics board. However, the code which performs Huffman enco-
ding and decoding is of general interest.
-The two C source files in this archive are specific to the TRS-80 Model 4 with high-resolution graphics board. However, the code which performs Huffman enco- ding and decoding is of general interest.
Platform: |
Size: 5120 |
Author: 王仲楼 |
Hits:
Description: The two C source files in this archive are specific to the TRS-80 Model 4 with
high-resolution graphics board. However, the code which performs Huffman enco-
ding and decoding is of general interest.
-The two C source files in this archive are specific to the TRS-80 Model 4 with high-resolution graphics board. However, the code which performs Huffman enco- ding and decoding is of general interest.
Platform: |
Size: 23552 |
Author: 王仲楼 |
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Description: 哈弗曼编码对每个字符串进行匹配,每行作为一次匹配的结束。 Matlab实现自适应Huffman哈...目前是对英文字母,当然对汉字要难些,而且可能会不是特别准确(因为需要训练的...哈弗曼编码 哈弗曼编码的通信系统中的仿真 IDEAL模式识别工具箱源代码 这个模式... -哈弗曼encoded string of each match, each line as the end of a match. Matlab to achieve adaptive Huffman Kazakhstan ... is currently the English alphabet, of course, more difficult for Chinese characters, and may not particularly accurate (because of the need for training哈弗曼coding ...哈弗曼encoded communication system simulation Pattern Recognition Toolbox IDEAL this model the source code ...
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Size: 3072 |
Author: lizhe |
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Description: 本文档实现了JPEG压缩算法，字组织比较简陋, 大体上分成 3 个部分.
压缩算法简介
1. 色彩模型
2. DCT (离散余弦变换)
3. 重排列 DCT 结果
4. 量化
5. 0 RLE 编码
6. 范式 Huffman 编码
7. DC 的编码
解码过程简述
8. 一个数据单元 Y 的解码
9. JPG 文件(Byte 级)里怎样组织图片信息
10. 关于标记
11. JPG 文件中 Haffman 表的储存
12. 采样系数
13. JPG 文件的解码简述-This document implements JPEG compression algorithm, the word organization is relatively simple, broadly divided into three parts. Compression algorithm Introduction 1. Color model 2. DCT (discrete cosine transform) 3. Re-arrangement of DCT results 4. Quantified 5. 0 RLE encoding 6 . paradigm Huffman coding 7. DC encoding decoding process outlined 8. a Y decoding data unit 9. JPG file (Byte level) where information on how to organize the images 10. on the marking 11. JPG files Haffman table storage 12. Sampling coefficient of 13. JPG file Brief decoding
Platform: |
Size: 843776 |
Author: george |
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Description: JPEG标准中规定了4种压缩模式[15]：顺序编码（Sequential encoding），渐进编码（Progressive encoding），等级编码（Hierarchical encoding），无损编码（Lossless encoding）。应用最为广泛的为基于DCT变换的顺序编码，也称之为基准模式(Baseline mode)，其它几种模式都以此为基础。这里，采用了JPEG基准模式对图像进行压缩，在基准模式中，熵编码采用哈夫曼编码方法。
-JPEG standard specifies four kinds of compression [15]: the order of encoding (Sequential encoding), progressive encoding (Progressive encoding), class code (Hierarchical encoding), lossless encoding (Lossless encoding). The most widely used sequence-based DCT transform coding, also known as baseline model (Baseline mode), several other models are based. Here, using the JPEG image compression benchmark model, in the baseline model, the entropy coding using Huffman coding.
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Size: 1024 |
Author: yxl |
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Description: 这是一个用C编写的求概率型霍夫曼编码的源程序，我在VC软件里调试过的，可以下载下来直接用的，-This is the source code written in C requirements probabilistic Huffman coding, I debugged VC software can be downloaded directly use
Platform: |
Size: 1024 |
Author: wangshanshan |
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Description: 一个原始图像信息，要对其进行 JPEG 编码，过程分两大步：
i) 去除视觉上的多余信息，即空间冗余度
ii)去除数据本身的多余信息，即结构（静态）冗余度
JPEG 编码中主要涉及到的内容主要包括：
i) Color Model Conversion (色彩模型)
ii) DCT (Discrete Cosine Transform 离散余弦变换)
iii)重排列 DCT 结果
iv) 量化
v) RLE 编码
vi) 范式 Huffman 编码
vii)DC 的编码
这部分代码是在DM6446芯片上实现的JPEG编码算法。-An original image information to be JPEG encoded, the process is two step: i) removing excess visual information, i.e. the degree of spatial redundancy ii) to remove the redundant information of the data itself, i.e. structure (static) redundancy JPEG coding mainly related to the content includes: i) Color Model Conversion (color model) ii) DCT (Discrete Cosine Transform, Discrete Cosine Transform) iii) rearrangement of the DCT results iv) quantization v) RLE encoding vi) Paradigm Huffman coding vii) DC coding part of the code is implemented in the DM6446 chip JPEG encoding algorithm.
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Size: 25600 |
Author: cnauth |
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Description: 本解码器类支持普通jpeg文件格式，这也是目前大多数jpeg文件所采用的格式，此格式主要特点是数据精度为8位，采用Huffman编码的普通DCT帧（不支持扩展串行和递进模式及数学编码）。本解码器类的 IDCT算法采用三种模式，分别是浮点解码、定点整数解码和定点整数MMX优化解码，您可根据具体情况选择。-The decoder class support common JPEG file format, which is currently the most JPEG files in the format and the main characteristics of this format is data for 8-bit precision, using Huffman coding DCT common frame (does not support extended serial and progressive model and arithmetic coding). The decoder of the IDCT algorithm uses three modes, respectively, floating-point decoding, fixed-point integer decoding and fixed-point integer MMX optimization, you can choose according to the specific circumstances.
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Size: 207872 |
Author: hxzg |
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