基于二维EMD的图像分层放大方法  

A layered image zooming method by 2D EMD technique

作　　者：田岩[1] 黄应[1] 彭复员[1] 柳健[1] 

机构地区：[1]华中科技大学电子与信息工程系

出　　处：《华中科技大学学报（自然科学版）》2007年第1期20-22,共3页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(60572048;60475024);地理空间信息工程国家测绘局重点实验室基金资助项目(200636)

摘　　要：提出了一种新的图像分层放大方法,在各层上体现图像的局部和全局的相关性,弥补了传统插值放大中的不足.其原理是先将图像用二维经验模态分解(empirical mode decomposition,EMD)方法分解为具有不同复杂程度的图层,在每一分解层上分别设计一种组合放大方法,其中组合系数密切相关于图层的复杂度,最终的放大结果再由EMD逆过程得到.实验结果和数据表明这种方法能够取得良好的图像放大效果.A new layered image zooming method is proposed which can express the local and global correlation of the images on each layers to improve traditional methods. The main procedures of this method are as the following. An image was decomposed into several layers with different complexities by 2D EMD （empirical mode decomposition）, each of which contains different details and roughness. Each layer was zoomed by using a combination method with different parameters which are proportional to roughness of that layer. The final zooming result was reconstructed from the combinational interpolated layers. Experimental and statistical results demonstrate that good magnified images are achieved by the proposed method.

关 键 词：图像插值 二维经验模态分解 组合插值 

分 类 号：TP75[自动化与计算机技术—检测技术与自动化装置]