一种基于菲涅尔衍射的边缘检测算法  

A Novel Linear Edge Detector Derived from Fresnel Diffraction Mode

作　　者：刁麓弘[1] 于斌[2] 李华[1] 

机构地区：[1]中国科学院计算技术研究所国家智能计算中心 [2]深圳大学光电子学研究所,深圳518060

出　　处：《计算机学报》2006年第12期2138-2142,共5页Chinese Journal of Computers

基　　金：国家自然科学基金重点项目(60532090);国家"九七三"重点基础研究发展规划项目基金(2004CB318000)资助~~

摘　　要：利用菲涅尔衍射模型导出了一种新的边缘检测算法.为了克服菲涅尔衍射计算复杂的缺点,该方法被简化为一种线性卷积滤波器.通过与Sobel、Log和Canny三种边缘检测算子比较,可以看出新方法的结果与Canny算子相当且更加符合人类的认知.此外,在含有丰富细节和微小变化的区域,新方法可以取得更好的结果.This paper proposes an edge detection scheme based on Fresnel diffraction mode.Since Fresnel diffraction is mathematically complex, it is simplified into a linear convolution filter. Experiments on images are compared with the Laplacian of Gaussian, Sobel and Canny edge detection algorithms. The experimental results indicate that the new detector＇s result is comparable to Canny detector and agree more with human＇s recognition. And it also can get an even better edge map on some regions which contain abundant local details or some tiny changes.

关 键 词：边缘检测 菲涅尔衍射 复值函数 卷积滤波 CANNY算子 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]