MATLAB 进行五种边缘检测

自定义函数：

function []=edge_detect(image_name)
a=imread(image_name);
I=rgb2gray(a);

BW1=edge(I,'Roberts',0.16);
BW2=edge(I,'Sobel',0.16);
BW3=edge(I,'Prewitt',0.06);
BW4=edge(I,'LOG',0.012); 
BW5=edge(I,'Canny',0.12);

figure('Name','进行五种边缘检测');
subplot(2,3,1);imshow(I);title('原图');
subplot(2,3,2);imshow(BW1);title('Robert算子边缘检测')
subplot(2,3,3);imshow(BW2);title('Sobel算子边缘检测')
subplot(2,3,4);imshow(BW3);title('Prewitt算子边缘检测');
subplot(2,3,5);imshow(BW4);title('LOG算子边缘检测');
subplot(2,3,6);imshow(BW5);title('Canny边缘检测');