Hi every one is there any way how to subtradt two matrices of different dimension let say A=<424x544x3uint8> and B=<462x545x3 uint8> How can we perform subtraction like S=A-B. Thanks

2 views (last 30 days)
A=imread('u.png'); B=imread('c2.png'); Ip = imabsdiff(A,B); imshow(Ip)

Answers (1)

Andy
Andy on 22 Oct 2014
How about expanding the two inputs to generate matrices with matching dimensions, assuming A(1,1) lines up with B(1,1)
Asize=size(A);
Bsize=size(B);
Csize=max(Asize,Bsize);
Anew=zeros(Csize);
Bnew=zeros(Csize);
Anew(1:Asize(1),1:Asize(1,2))=A;
Bnew(1:Bsize(1),1:Bsize(1,2))=B;
S=Anew-Bnew;
Alternatively trim them to the same size after finding the size of the overlap,
Asize=size(A);
Bsize=size(B);
Csize=min(Asize,Bsize);
Anew=A(1:Asize(1),1:Asize(1,2));
Bnew=B(1:Asize(1),1:Bsize(1,2));
S=Anew-Bnew;

Categories

Find more on Operators and Elementary Operations in Help Center and File Exchange

Tags

No tags entered yet.

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!