Hello, and lots of thanks in advance to anyone that can help me out here! Now some more details about this question:
- A and B are of equal size.
- It doesn't matter (to me) whether v is a vector, cell array, or any other data type; whatever works will do.
Here an example:
A = [ 1 , 2 , 3 , 4 ]; B = [ 5 , 5 , 6 , 7] ==> C = [ (1,2,3,4,5), (2,3,4,5), (3,4,5,6), (4,5,6,7) ]
Why I'm asking: I tried implementing morphological operations myself, which all in all works, but performs very poorly, as the current version contains a double-for-loop. One instance of my functions would be the following:
function dilatedImage = ownDilate(binaryImage)
dilatedImage = binaryImage;
dilatedImage = dilatePoint(binaryImage,1:size(binaryArea,1)-1,1:size(binaryArea,2)-1);
end
function result = dilatePoint(binaryImage,py,px)
result = binaryImage;
x0 = max(1,px - 3);
y0 = max(1,py - 3);
x1 = min(size(binaryArea,2),px + 3);
y1 = min(size(binaryArea,1),py + 3);
dx0 = max(1,5-px);
dy0 = max(1,5-py);
dx1 = min(7,size(binaryArea,2) - px + 4);
dy1 = min(7,size(binaryArea,1) - py + 4);
for j = px
for i = py
se = structureElement(dy0(i):dy1(i),dx0(j):dx1(j));
if binaryArea(i,j)
result(y0(i):y1(i),x0(j):x1(j)) = or(se,result(y0(i):y1(i),x0(j):x1(j)));
end
end
end
end
Rather than using i,j in a for loop I would have liked to use py,px and without a for loop. Replacing the if statement would be easy I figure, I only need to create a vector of indices for which the if statement would apply and then use that for the assignment below. But what gives me headaches is the statement above that, since i cannot use the colon operator to create something as stated in the question. I know avoiding for statements isn't ALWAYS possible in Matlab, but I can't get rid of the feeling that it can in my case.
Anyways, thanks for your time, I hope I put everything detailed enough, but if I forgot something, please tell me!
