| 一种JPEG无损压缩算法的仿真与实现 |
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| 引用本文： | 王文延,何妮,吴沛宏. 一种JPEG无损压缩算法的仿真与实现[J]. 计算机仿真, 2010, 27(5): 217-219,277 |
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| 作者姓名： | 王文延 何妮 吴沛宏 |
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| 作者单位： | 1. 广西师范大学电子工程学院,广西,桂林,541004
2. 中山大学肿瘤防治中心,广东,广州,510060 |
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| 基金项目： | 国家自然科学基金(30973418);;广西教育厅立项项目(200808LX019) |
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| 摘 要： | 研究图像压缩算法优化算法的效果,针对目前通用无损压缩算法都难以对JPEG文件进行压缩,提出了一种洗牌算法和无损压缩算法相结合的无损压缩方法。在将JPEG图像文件进行压缩前对文件进行有效规整,产生冗余,然后再结合通用无损压缩算法进行无损压缩进一步去除文件内部信息冗余。进行仿真实验验证,算法能够进一步将JPEG图像文件无损压缩1%-3%。结果表明,上述算法能进一步无损去除文件内部冗余,减小文件体积,算法简单,时间复杂度低,易于实现,是一种有效的快速图像压缩算法。算法已经获得专利保护。
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| 关 键 词： | 洗牌算法 有损压缩 无损压缩 可逆变换 |
A Lossless Compression Method for JPEG Based on Shuffle Algorithm |
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| WANG Wen-yan,HE Ni,WU Pei-hong. A Lossless Compression Method for JPEG Based on Shuffle Algorithm[J]. Computer Simulation, 2010, 27(5): 217-219,277 |
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| Authors: | WANG Wen-yan HE Ni WU Pei-hong |
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| Affiliation: | 1.College of Electronic Engineering/a>;Guangxi Normal University/a>;Guilin Guangxi 541004/a>;China/a>;2.Department of Imaging and Interventional Radiology Cancer Center/a>;Sun Yat-Sen University/a>;Guangzhou Guangdong 510060/a>;China |
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| Abstract: | Universal lossless algorithms of data compression are always efficient to text and inefficient to JPEG data.The paper deals with the lossless compression for JPEG image.According to the characteristic of JPEG,a new shuffle algorithm is proposed to resize the JPEG,and then use the universal lossless algorithms to compress the resize JPEG.In the end,using the typical example as experiment has been carried out and obtained a preferable compression ratio about 1%-3% higher with little time cost.The algorithm ha... |
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| Keywords: | Shuffle algorithm Lossy compression Lossless compression Reversible transform |
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