Pythonはnumpyを用いて画像の相関係数を計算する(相関解析)

# -*- coding: utf-8 -*-
'''
Created on 2018-9-7 16:23:25
@author: skyblue
'''
import cv2
import numpy as np

img0 = cv2.imread('./imagesTest4/0.png', cv2.IMREAD_GRAYSCALE)
img1 = cv2.imread('./imagesTest4/1.png', cv2.IMREAD_GRAYSCALE)

cv2.imshow('img0', img0)
cv2.imshow('img1', img1)

img0= img0.reshape(img0.size, order='C')  #         。       ，              
img1= img1.reshape(img1.size, order='C')

#       
'''
               ；
             , results[i][j]   i       j          .
np.corrcoef      （     list）         （coefficient)
               ，         (2*2    )     ，    1，           。
"[0, 1]"     0             coefficient
'''
print("Correlation coefficient of image 0 and image 1: %f
" % np.corrcoef(img0, img1)[0, 1])


# cv2.waitKey(0)
cv2.destroyAllWindows()