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I= imread('F:\rise.jpg'); [N,M]=size(I); figure; subplot(1,2,1); imshow(I); title('ÔͼÏñ-rise'); n1=3;sigma1=0.5;n2=3;sigma2=0.5;theta=0; r=[cos(theta) -sin(theta); sin(theta) cos(theta)]; for i = 1 : n2 for j = 1 : n1 u = r*[j-(n1+1)/2 i-(n2+1)/2]'; h(i,j)=exp(-u(1)^2/(2*sigma1^2))/(sigma1*sqrt(2*pi))*exp(-u(2)^2/(2*sigma2^2))/(sigma2*sqrt(2*pi)); end end h = h / sqrt(sum(sum(h.*h))); f1=conv2(I,h,'same'); t=ones(N,M); t=f1; for i=2:N-1 for j=2:M-1 f1(i,j)=t(i+1,j)+t(i-1,j)+t(i,j+1)+t(i,j-1)-4*t(i,j);%¶þάÀÆÕÀ˹Ëã×Ó end end subplot(1,2,2); imshow(f1); title('Laplacian±ßÔµ¼ì²â(¸ß˹Â˲¨ºó)¡ªrise'); |
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