5.rar_site:www.pudn.com_哈夫变换_检测圆

f = imread('E:\xinxi\fig1-1-1.bmp'); f0=rgb2gray(f); figure(1),imshow(f0) %加入高斯噪声并显示 f1=imnoise (f0, 'speckle', 0.01); f1=im2double(f1); figure(2),imshow(f1); % 给定均值滤波窗口 h3=1/9.*[1 1 1; 1 1 1; 1 1 1 ]; %采用h3对图像f2进行卷积滤波 f4=conv2(f1, h3,'same'); figure(3),imshow(f4); % 进行sobel 滤波 h2=fspecial('sobel'); g3=filter2(h2,f1, 'same'); figure(4),imshow(g3); K=mat2gray(g3); figure(5),imshow(K);