Where does matrix B fits best in Matrix A

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Lucas Kellermann
Lucas Kellermann on 19 Jan 2022
Commented: Lucas Kellermann on 19 Jan 2022
I have a matrix A (200x200) and a matrix B (200x50).
I want to know now where B fits best in A. Maybe the nearest neighbour method can help?
Here an example what I mean:
  4 Comments
Lucas Kellermann
Lucas Kellermann on 19 Jan 2022
I have to do both but first step is an 100% overlap.

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Answers (1)

KSSV
KSSV on 19 Jan 2022
A = 5*ones(8) ;
A(4:6,4:6) = [3 4 2; 1 1 1; 2 3 3] ;
B = ones(3) ;
[m,n] = size(A) ;
count = 0 ;
v = zeros(3,3,[]) ;
R = zeros([],1) ;
for i = 1:3:(m-3)
for j = 1:3:(n-4)
count = count+1 ;
M = A(i:(i+3-1),j:(j+3-1)) ;
v(:,:,count) = M ;
R(count) = sqrt(mean((M(:) - B(:)).^2)) ;
end
end
[val,idx] = min(R) ;
iwant = v(:,:,idx)
iwant = 3×3
3 4 2 1 1 1 2 3 3

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