Opencv example to load image

load_gray_img.py

import cv2 as cv
import sys

# load gray scale image by setting the flag argument to cv.IMREAD_GRAYSCALE
img = cv.imread("img.jpg", cv.IMREAD_GRAYSCALE)

if img is None:
    sys.exit("Could not read the image")

cv.imshow("Display window", img)
k = cv.waitKey(0)

if k == ord('s'):
    cv.imwrite("gray_img.jpg", img)
elif k == ord('x'):
    sys.exit("Exiting image")

load_img.py

import cv2 as cv
import sys

img = cv.imread("img.jpg")

if img is None:
    sys.exit("Could not read the image")

cv.imshow("Display window", img)
k = cv.waitKey(0)

if k == ord('s'):
    cv.imwrite("new_pic.jpg", img)
elif k == ord('x'):
    sys.exit("Exiting image")