遥感图像高斯与椒盐噪声的PDE 混合去噪模型研究.pdf

文档介绍：第 39 卷
第 3 期测
绘
学
报 Vol. 39, No. 3
20
10 年 6 月 Acta Geoda etica et Ca rtographica Sinica Jun. , 2010
文章编号: 1001
1595( 2010) 03
0283
06
遥感图像高斯与椒盐噪声的 PDE 混合去噪模型研究
王相海1, 3 , 张洪为2 , 李
放1
1. 辽宁师范大学计算机与信息技术学院, 辽宁大连 116029; 2. 辽宁师范大学数学学院, 辽宁大连 116029; 3. 南京大
学计算机软件新技术国家重点实验室, 江苏南京 210093
A PDE
based Hybrid Model for De
noising Remote Sensing Image with Gaussian and Salt
pepper Noise
WANG Xianghai 1, 3 , Z HANG Hongwei2 , LI Fang1
1. Col lege puter a nd Informa tion Technology, Lia oni ng Normal University, Da lia n 116029, China; 2. School of Mathema tics
Technology, Li aoning Normal University, Dal ian 116029, China ; 3. Na tiona l Key Laboratory for Novel Softwa re Tec hnology,
Nanj ing University, Nanjing 210093, China
Abstract : A PDE
ba sed hybrid model is proposed to de
noise the pre
processed remote sensing images, which are
often polluted by Ga ussia n a nd sa lt
pepper noises. The model solves the excessive diffusion problem at smooth
regions a nd staircase effect presented in traditiona l pure a nisotropic diffusion model. Mea nwhile, it es the
shortage of 4
order PDE model that tends to lose much edge informa tion. The proposed model ca n not only efficient
ly remove mixed noise in remote sensing ima ges, but also simulta neously retain detail information, such a s edge
and texture. Experimental results illustrate the effectiveness and sta bility of