image to grayscale python opencv code example

Example 1: cv2 grayscale

gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)

Example 2: convert image to grayscale opencv

img = cv2.imread(path)
img_gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)

Example 3: python image to grayscale

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