clear;clc;

close all;

I=imread('G:1.jpg');

I=rgb2gray(I);

imshow(I,[]);

title('原圖');

sobelBW=edge(I,'sobel');

figure;

imshow(sobelBW);

title('Sobel Edge');

robertsBW=edge(I,'roberts');

figure;

imshow(robertsBW);

title('Roberts Edge');

prewittBW=edge(I,'prewitt');

figure;

imshow(prewittBW);

title('Prewitt Edge');

logBW=edge(I,'log');

figure;

imshow(logBW);

title('Laplasian of Gaussian Edge');

cannyBW=edge(I,'canny');

figure;

imshow(cannyBW);

title('Canny Edge');

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