矩陣點乘在opencv和 numpy裏的實現

import cv2 
import numpy as np
 

>>> c = np.zeros( (2,2) )
>>> a = np.array( [[1.0,2.0],[3.0,4.0] ])
>>> b = np.array( [[0.0,1.0],[1.0,0.0] ])
>>> d = cv2.gemm(a,b,1.0, c ,0.0 )
>>> d
array([[2., 1.],
       [4., 3.]])
>>> d = np.dot( a , b )
>>> d
array([[2., 1.],
       [4., 3.]])