In convmtx2 documentation I found the following description :
T = convmtx2(H,m,n) returns the convolution matrix T for the matrix H. If X is an m-by-n matrix, then T = convmtx2(H,m,n) returns the convolution matrix T for the matrix H. If X is an m-by-n matrix, then reshape(T*X(:),size(H)+[m n]-1) is the same as conv2(X,H).
T = convmtx2(H,[m n]) returns the convolution matrix, where the dimensions m and n are a two-element vector. is the same as conv2(X,H).
T = convmtx2(H,[m n]) returns the convolution matrix, where the dimensions m and n are a two-element vector.
I am trying an alternative for C=conv2(A,B,'same') by using reshape command. Below is my attempt that does not work,
A = rand(n,n); B = rand(3,3); C=reshape(T*A(:),size(B)+[n n]-1);
I know that reshape command set up is incorrect. How to fix this?
Best Answer