png or google colaboratory online code example

Example: cropping image google colab

# for google colab use cv2_imshow instead
# change x, y, h ,w to the values you are happy with
import cv2
img = cv2.imread("lenna.png")
crop_img = img[y:y+h, x:x+w]
cv2.imshow("cropped", crop_img)
cv2.waitKey(0)