Convoluton

[TakshKamlesh]

def multiply(m1,m2):

ans=np.zeros((len(m1)-len(m2)+1,len(m1)-len(m2)+1))
for ix in range(len(m1)-len(m2)+1):
    for jx in range(len(m1)-len(m2)+1):
        patch=m1[ix:ix+len(m2),jx:jx+len(m2)]
        mlt=patch*m2
        mlt=mlt.sum()
        ans[ix][jx]=mlt
    
return ans

m1=np.array([[1 ,2, 3],[4, 5, 6],[7, 8, 9]])
m2=np.array([[5 ,6],[7 ,8]])
m3=multiply(m1,m2)
print(m3)