Im trying to put the vector i get from z in A and from q in B and then stacking them together. arr is an array from image of size (600,478). M=600, N=478. For some reason the matrix i get out is not the right one.
def avgdif(M):
A=np.zeros([int(M/2),N])
B=np.zeros([int(M/2),N])
for i in range(int(M/2)):
z=(np.add(arr[2*i-1],arr[2*i]))/2
A[i:]=[z]
q=(np.subtract(arr[2*i-1],arr[2*i]))/2
B[i:]=[q]
return np.vstack([A,B])