python code to convert color to binary code example

Example 1: opencv convert to black and white

import cv2
  
originalImage = cv2.imread('C:/Users/N/Desktop/Test.jpg')
grayImage = cv2.cvtColor(originalImage, cv2.COLOR_BGR2GRAY)
  
(thresh, blackAndWhiteImage) = cv2.threshold(grayImage, 127, 255, cv2.THRESH_BINARY)
 
cv2.imshow('Black white image', blackAndWhiteImage)
cv2.imshow('Original image',originalImage)
cv2.imshow('Gray image', grayImage)
  
cv2.waitKey(0)
cv2.destroyAllWindows()

Example 2: generate binay image python

import numpy as np
from numpy import random

# Generating an image of values between 1 and 255. 
im_thresh = random.randint(1,256, (64,64))

# Set anything less than 255 to 0. Unnecessary if cv2 does this during threshold. 
# Must go before the operation below in order not to set all values to 0. 
im_thresh[im_thresh<255] = 0

# Set all values at indices where the array equals 255 to 1.
im_thresh[im_thresh==255] = 1