MATLAB: Indices of intersection points of two logical arrays

arrayintersection

how can I find the indices of the intersection points of a binary image with a logical array
this is the code
//////////////////
f2= imread('anyBinaryImage');
norm2 = normalization(f2,128,128); % normalization function
f3= zeros(size(norm2));
a = ones(2,80);
f3(10:11,1:80) = a;
[g, k, c]= intersect(norm2,f3,'rows');
////////////////
but I got empty matrix, even though there are lots of intersection points between the image and the array
g =
   Empty matrix: 0-by-128
k =
   Empty matrix: 0-by-1
c =
   Empty matrix: 0-by-1
what should I do ?

Best Answer

Try it this way:
% Find pixels in both binary images:
intersectionImage = f2 & f3;
% Now get the rows and columns of the intersecting pixels
% (for some unknown, unspecified, and probably unnecessary reason):
[rows columns] = find(intersectionImage);
Are you sure you really need the rows and columns of the intersections? I'd say that most likely you don't need them at all. The intersectionImage is enough to do whatever you're going to do.
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