comparing values of nodes inside grid
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Hi friends ,,, i just beginner in matlab and have some task ,, i making grid on image and trying to check the nodes of each segment of image then change it's values to 0 or 1 equal to the condition ,,, i made a loop but there is a mistake .. all image showed as black // please check and help ?? I = imread('lena64.bmp'); figure,imshow(I); hold on M = size(I,1); N = size(I,2); a=4; b=4; for k = 1:a:M x = [1 N]; y = [k k]; plot(x,y,'Color','black','LineStyle','-'); set(findobj('Tag','MyGrid'),'Visible','on') end for k = 1:b:N x = [k k]; y = [1 M]; plot(x,y,'Color','black','LineStyle','-'); set(findobj('Tag','MyGrid'),'Visible','on') end
for p=1:a:M for q=1:b:N
for h=4:a:M
for z=4:b:N
if (I(p,q)==I(h,z)==I(p,h)==I(z,q))
for k= p:h
for k2= q:z
I(k,k2)=0;
end
end
else
for k= p:h
for k2 = q:z
I(k,k2)=1;
end
end
end
end
end
end
end
figure,imshow(I);
hold off
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