convert to grayscale python code example

Example 1: python image to grayscale

from PIL import Image
img = Image.open("image.jpg")
img.convert("L").save("result.jpg")

Example 2: how to convert into grayscale opencv

import cv2

# Reading color image as grayscale
gray = cv2.imread("color-img.png",0)

# Showing grayscale image
cv2.imshow("Grayscale Image", gray)

# waiting for key event
cv2.waitKey(0)

# destroying all windows
cv2.destroyAllWindows()

Example 3: rgb to grayscale python

from PIL import Image
img = Image.open('image.png').convert('LA')
img.save('greyscale.png')