一种改进的DCT图像压缩算法的研究与仿真  

Research and Simulation of An Improved DCT Image Compression Algorithm

作　　者：吴晓云[1] 刘宝盈[1] 李亚文[1] 李华[1] Wu Xiaoyun Liu Baoying Li Yawen Li Hua(College of Electronic Information and Electrical Engineering, Shangluo University, Shangluo 726000, Shaanxi Chin)

机构地区：[1]商洛学院电子信息与电气工程学院,陕西商洛726000

出　　处：《河南科学》2016年第10期1630-1633,共4页Henan Science

基　　金：陕西省教育厅科研计划项目(2013JK1057);商洛学院根植地方专项项目(gz16035);商洛学院科研项目(14SKY001)

摘　　要：图像压缩技术是促进多媒体进一步发展的关键技术,首先利用基于DCT的方法对图像进行压缩,但在解码端会产生"块效应".针对DCT方法的缺点提出基于自适应邻域的改进压缩算法.利用MATLAB对基于DCT的压缩方法和基于自适应邻域的改进算法分别进行了仿真,仿真数据表明,基于自适应邻域改进的方法不但简单易行,而且也提高了图像质量.Image compression technology is the key to promote further development of multimedia technology. Firstly image is compressed by using DCT in this paper,but the image appears“block effect”at the decoding end. An improved algorithm based on adaptive field is proposed aimed at the disadvantage of DCT method. The algorithm based on DCT and adaptive algorithm are simulated respectively in MATLAB. Simulation data show that the improved method based on adaptive field is simple,and can improve the image quality.

关 键 词：DCT 块效应 自适应邻域 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]