from google.colab.patches import cv2_imshow
import cv2
img = cv2.imread("Family.JPG")
cv2_imshow(img)
img_gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
cv2_imshow(img_gray)
img_invert = cv2.bitwise_not(img_gray)
# cv2_imshow(img_invert)
img_smoothing = cv2.GaussianBlur(img_invert, (21, 21),sigmaX=0, sigmaY=0)

# cv2_imshow(img_smoothing)
def dodgeV2(x, y):
    return cv2.divide(x, 255 - y, scale=256)
final_img = dodgeV2(img_gray, img_smoothing)

cv2_imshow(final_img)