python CV2 convert image to grayscale image code example

Example 1: convert image to grayscale opencv

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

Example 2: convert image to grayscale opencv

img_gray_mode = cv2.imread(path, cv2.IMREAD_GRAYSCALE)

Example 3: save an image in python as grayscale cv2

cv2.imwrite('data/dst/lena_opencv_red.jpg', im)