Threshold_Otsu

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

img = cv2.imread('C:\\Users\\Admin\\Downloads\\thresholding\\landscape.jpg',0)

#Global thresholding
ret1,thresh1 = cv2.threshold(img,127,255,cv2.THRESH_BINARY)

#Otsu's thresholding
ret2,thresh2 = cv2.threshold(img,0,255,cv2.THRESH_BINARY+cv2.THRESH_OTSU)

print("Global Threshold:", ret1)
print("Otsu's Threshold:", ret2)

# plot histogram of image
plt.hist(img.ravel(),256)
plt.show()

vis1 = np.concatenate((thresh1, thresh2), axis=1)
cv2.imshow("ORIGINAL", img)
cv2.imshow("THRESH_BINARY vs THRESH_OTSU", vis1)
cv2.waitKey(0)         
cv2.destroyAllWindows()