Where does matrix B fits best in Matrix A
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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
Stephen23
on 19 Jan 2022
Edited: Stephen23
on 19 Jan 2022
@Lucas Kellermann: does the "best fit" require 100% overlap, or can the "best fit" occur over the matrix edges?
For example, where is the "best fit" for these matrices?:
A = [999,999,999,999;999,999,999,999;999,999,1,1;999,999,1,1]
B = [1,1,1;1,1,1;1,1,1]
Answers (1)
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)
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