摘要 图像包含了被描述对象的相关信息，是人类从视觉上获取信息量的载体。进入 信息化时代以来，人们越来越依靠计算机、智能手机、平板电脑等电子设备来获取 和利用信息。然而，数字化时代的图像信息具有庞大的数据量，给存储和传输过程 造成了很大困难，极大制约了图像通信等领域的发展，因此，图像压缩技术受到越 来越多的关注。图像压缩的目的把含有大量字节的原图使用尽量少的字节进行表示 和传输，同时也要求经过解压复原或者重建的图像要尽量保持与原图基本一致的信 息量。利用图像压缩技术，可以解决图像传输和存储所遇到的困难，使图像能够利 用网络通过计算机和智能设备等快速传输和实时处理，给人们的学习和工作提供了 极大便利，推动了信息时代的科技进步。 83847

本文主要介绍了基于霍夫曼编码和译码的图像压缩和重建，对霍夫曼编码译码 原理进行了详细的分析，阐述了图像压缩和重建的基本步骤，并利用 MATLAB 软件 进行编写程序、调试程序、仿真实验，最后对实验的结果进行分析，得出结论。 

毕业论文关键字：图像压缩、霍夫曼编码、霍夫曼译码、图像重建。 

Abstract The image contains information about the described object, is the carrier of human being to get information from the vision。 Since entering the information age, people rely increasingly on computers, intelligent mobile phone, tablet computer and other electronic equipment to obtain and use information。 However, digital image information has a large amount of data, has caused great difficulties to the process of storage and transmission, the development of image communication and other fields are greatly restricted, as a result, the image compression technology has attracted more and more attention。 The purpose of image compression, the image contains a large number of bytes using fewer bytes to express and transfer, also requires the restoration or reconstruction of the image after decompression to try to keep the information consistent with the original image。 The image compression technology, image transmission and storage can solve the difficulties encountered, the image can be through the computer and the intelligent use of network Energy equipment, such as rapid transmission and real-time processing, to people's learning and work to provide a great convenience, to promote the progress of science and technology in the information age。

This paper mainly introduces the based on Huffman coding and decoding of image compression and reconstruction, of Huffman coding and decoding principle  were detailed analysis, the basic steps of image compression and reconstruction are described, and use MATLAB software programming, debugging, simulation experiment, finally, the results of the experimental analysis, we can come to the conclusion that Theory。

Keywords: image compression, Hoffman coding, Hoffman decoding, image reconstruction。

目录

第一章 绪论 - 1 

1。1  课题研究背景 - 1 

1。2  选题的目的和意义 - 2 

1。3  图像压缩发展及国内外研究现状 - 2 

1。4  当前存在的问题 - 3 

1。5  本文主要内容 - 4 

第二章 图像压缩及重建相关理论 - 5 

2。1  图像压缩背景和基本理论 - 5 

2。1。1  图像压缩背景 - 5 

2。1。2  图像压缩基本理论 - 5 

2。2  图像压缩 - 8 

2。2。1  图像压缩概念及原理 - 8 

2。2。2  图像压缩系统 - 8 

2。2。3  图像压缩分类 - 9 

2。2。4  衡量图像压缩的指标  10