常用图像边缘检测方法及Matlab研究

Comparative Study on Some Common Edge Detection Methods Based on Matlab

边缘检测在数字图像处理中有着重要的作用。为了在实际应用中能够选择最佳的边缘检测方法,采用Matlab语言编程,将若干常用的边缘检测方法应用于花瓶边缘检测仿真实验,包括微分算子法(Robert算子、Sobel算子、Prewitt算子和Kirsch算子)、高斯-拉普拉斯算子法、坎尼算子法、零交叉法和Frei-chen边缘检测法等。经过对结果的对比研究,得到其各自特性和适用范围。

Abstract： The edge detection plays an important role in digital image processing. In order to choose rile most appropriate edge detection in the practical application, some common used edge detection methods for vase＇s edge detection simulation based on Matlab are introduced, which include the differential operator method （Robert operator, Sobel operator, Prewitt op erator and Kirsch operator）, the Gauss Laplace operator method, the Canny operator method, the zero-crossing n,~.thod and the Frei-chen edge detection method, etc. Their distinguishing characteristics and suitable application range have been obtained through comparative study on the results.