python-两幅图像的颜色直方图作对比

import cv2 as cv
from matplotlib import pyplot as plt

def image_hist(image):

    color = ('B', 'G', 'R')          
    li = [1,2]
    for i , color in enumerate(color):
         hist = cv.calcHist([image],[i], None, [256], [0, 256])    
         plt.plot(hist, color,linestyle=v,label='image'+ str(li[count])+'-' +color)
         plt.xlim([0, 256])
         plt.legend()

src1 = cv.imread(‘1.jpg’)
src2 = cv.imread(‘2.jpg’)
#imgs = np.hstack([src1,src2])

cv.namedWindow(‘input_image’, cv.WINDOW_NORMAL)
cv.imshow(‘input_image’, src1)
cv.imshow(‘input_image’, src2)

count=0
v= ‘-’
image_hist(src1)
count=1
v=’–’
image_hist(src2)
plt.show()

cv.waitKey(0)
cv.destroyAllWindows()

运行效果图：