Plt clor image histogram

import cv2
import numpy as np
from matplotlib import pyplot as plt

file0 = 'image.jpg'
img = cv2.imread(file0)
color = ('b','g','r')
plt.figure()
for i,col in enumerate(color):
    histr = cv2.calcHist([img],[i],None,[256],[0,256])
    plt.plot(histr,color = col)
    plt.xlim([0,256])
plt.show()

Source: stackoverflow.com

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