二维EMD分解的数字图像压缩  

Digital image compression on BEMD decomposition

作　　者：徐琼[1] 李峰[1] 吕回[1] 

机构地区：[1]长沙理工大学计算机与通信工程学院,长沙410076

出　　处：《计算机工程与应用》2009年第5期180-182,共3页Computer Engineering and Applications

基　　金：湖南省自然科学基金(No.07JJ3120);湖南省教育厅科学研究项目(No.05C246)~~

摘　　要：二维EMD为图像处理提供了一个强有力的工具。图像进行EMD分解后,将会得到一系列的IMF和图像残差。由于分解出来的第一层IMF包含了图像的细节部分,笼统地对其进行压缩会造成图像高频部分损失,压缩图像质量不高。针对这种情况,将第一层IMF与其他层分开处理。通过与块离散余弦变换压缩方法进行比较,得出结论。BEMD provides a powerful tool for image processing.lmage is decomposed into a series of IMFs and is residued after the EMD decomposition.Due to the first IMF contains details of the image,it will cause some loss with the part of high-quality when only use one method to compress image.Also the quality of compressed image is not high.In view of this situation,the first IMF and the others are treated separately.With the comparison of DCT,the conclusion is gotten.

关 键 词：二维经验模态分解 固有模态函数 图像压缩 块离散余弦变换 

分 类 号：TN919.81[电子电信—通信与信息系统]