Description: 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-encoding and end-of-block coding in Mat2Vec, and a program which do JPEG-like entropy coding. A complete compression example is shown in TestMat2Vec.m. This file is all you need for Huffman coding in MatLab.-This file contains a new and improved version of on of the Huffman coder, (June 29. 2001). The name is Huff06.m. There are also some additional files which are helpful wh en using Matlab for data compression : quantizer. different variants of run-length-encoding an d end-of-block coding in Mat2Vec. and a program which do JPEG-like entropy coding . A complete compression example is shown in Tes tMat2Vec.m. This file is all you need for Huffma n coding in MatLab. Platform: |
Size: 25410 |
Author:金金 |
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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: 一个通信原理实验,huffman编码的实现过程,并且有详细说明-a communication principle experiment, the realization of Huffman coding process, and is described in detail Platform: |
Size: 1024 |
Author:刘云 |
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Description: 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-encoding and end-of-block coding in Mat2Vec, and a program which do JPEG-like entropy coding. A complete compression example is shown in TestMat2Vec.m. This file is all you need for Huffman coding in MatLab.-This file contains a new and improved version of on of the Huffman coder, (June 29. 2001). The name is Huff06.m. There are also some additional files which are helpful wh en using Matlab for data compression : quantizer. different variants of run-length-encoding an d end-of-block coding in Mat2Vec. and a program which do JPEG-like entropy coding . A complete compression example is shown in Tes tMat2Vec.m. This file is all you need for Huffma n coding in MatLab. Platform: |
Size: 25600 |
Author:金金 |
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Description: Huffman编码实现数字图象压缩，解压．对数字图象的压缩的步骤之一编码和解压步骤之一解码有很大的帮助．-Huffman coding of digital image compression, decompression. On digital image compression encoding one of the steps towards one of the steps to extract and decode a great help. Platform: |
Size: 10240 |
Author:梦铃 |
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Description: 实现基本JPEG的压缩和编码分三个步骤:
1. 首先通过DCT变换去除数据冗余；
2. 使用量化表对DCT系数进行量化；
3. 对量化后的系数进行Huffman编码。-Realize the basic JPEG compression and encoding is divided into three steps: 1. First of all, through the DCT transform to remove data redundancy 2. The use of quantization table of quantization DCT coefficients 3. Quantization coefficients after Huffman coding. Platform: |
Size: 2048 |
Author:后果 |
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Description: 霍夫曼（Huffman）编码算法是满足前缀条件的平均二进制码长最短的编码算法。本文用Matlab语言编程实现了霍夫曼（Huffman）编码,并有详细的word说明-Hoffman (Huffman) coding algorithm is to satisfy the conditions of the average prefix length the shortest binary code coding algorithm. In this paper, Matlab programming language to achieve the Hoffman (Huffman) encoding, and a detailed description of the word Platform: |
Size: 11264 |
Author:杨为 |
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Description: 实现JPEG的压缩和编码
（1）首先通过DCT变换去除数据冗余；
（2）使用量化表对DCT系数进行量化；
（3）对量化后的系数进行Huffman编码。
-The realization of JPEG compression and coding (1) First of all, through the DCT transform to remove data redundancy (2) the use of quantization table of quantization DCT coefficients (3) of the coefficients after quantization Huffman coding. Platform: |
Size: 2048 |
Author:李雅 |
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Description: 摘 要
文章以空间监控系统为背景,深入研究了JPEG图像压缩标准的实现方法,并基于FPGA对其进行了实现和优化。文中给出了详细的实现方法和优化过程,测试表明达到了很好的效果。
简单介绍了有损静态图像压缩当前有两种比较流行的标准JPEG和JPEG2000。说明了用JPEG方法压缩的原因。
介绍JPEG基本原理：JPEG对灰度图像的压缩处理过程主要包括:图像分割,离散余弦变换(DCT),量化(Quantization),“Z”形排序(Zigzag Scan),差分脉冲编码调制(Differential Pulse Code Modulation,DPCM)对直流系数(DC),行程长度编码(Run-Length Encoding,RLE)对交流系数(AC),霍夫曼(Huffman)编码等。
JPEG标准的特点是离散余弦变换。
比较详细介绍压缩系统的构成和实现。实现提及步骤， JPEG压缩模块设计和编码模块实现细节。
-Abstract
Article in the space monitoring system for the background, in-depth study of the JPEG image compression standard implementation methods and carried out based on FPGA implementation and optimization. In this paper, a detailed method of implementation and optimization of the process, testing showed that to achieve good results.
Easy introduction of harmful static image compression has two kinds of comparisons that the current popular standard JPEG and JPEG2000. Illustrated by the reasons for JPEG compression method.
JPEG introduce the basic principles: JPEG compression of gray-scale image processing include: image segmentation, discrete cosine transform (DCT), quantization (Quantization), "Z"-shaped sort (Zigzag Scan), differential pulse code modulation (Differential Pulse Code Modulation, DPCM) on the DC coefficient (DC), Run Length Encoding (Run-Length Encoding, RLE) of the exchange coefficient (AC), Hoffman (Huffman) coding.
JPEG standard is characterized by discrete Platform: |
Size: 523264 |
Author:压子 |
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Description: Matlab下实现huffman编码 在MATLAB中模拟c中链表 利用复数运算-Matlab under huffman coding in the MATLAB simulation of c in the list in the use of the plural operation Platform: |
Size: 155648 |
Author:peng |
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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: |
Size: 966656 |
Author:dwn |
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Description: huffman编码用于图像的压缩和解压，很好用的，可以用于各类图像的处理-huffman coding for image compression and decompression, useful, and can be used for all kinds of image processing Platform: |
Size: 2048 |
Author:唐宁 |
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Description: 此文件实现了对256*256像素的图片进行霍夫曼编码和解码的过程-This file use Huffman coding method to code and decode any 256*256 picture, turn out the result in binary code Platform: |
Size: 2048 |
Author:alvin |
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