反距离加权插值自适应图像直方图均衡化算法  

Inverse distance weighted interpolation based adaptive image histogram equalization algorithm

作　　者：赵晓捷[1] 穆冬[2] 薛斌党[1] 

机构地区：[1]北京航空航天大学宇航学院图像中心,北京100191 [2]北京航天飞行控制中心,北京100094

出　　处：《中国体视学与图像分析》2010年第1期8-12,共5页Chinese Journal of Stereology and Image Analysis

基　　金：航空科学基金项目(20080151009);国家自然科学基金项目(60502018)

摘　　要：提出了一种基于反距离加权插值的自适应图像直方图均衡化算法:在非重叠子块直方图均衡化方法的基础上,用反距离加权插值函数的权值描述图像像素之间的相关性,利用权值下降指数调节图像中局部区域的增强效果,通过设置平滑参数控制插值算法的平滑效应。遥感图像增强实验结果表明了该方法的可行性。A new adaptive histogram equalization method is presented for image contrast enhancement.The inverse distance weighted interpolation is used to replace the bilinear interpolation operation in the non-overlapped sub-block histogram equalization method.The weighted value of the inverse distance weighted interpolation is used to describe the dependency between pixels in the image.Then the local contrast can be easily adjusted by changing the weighted exponent.In addition,the smoothing effect can be controlled through setting the smoothing parameter.The feasibility of this method is validated by experiments on remote sensing images.

关 键 词：反距离加权插值 图像增强 自适应直方图均衡 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]