# watermarking image using OpenCV 

# importing cv2 
import cv2 

# loading images 
# importing logo that we are going to use 
logo = cv2.imread("logo.jpg") 

# importing image on which we are going to 
# apply watermark 
img = cv2.imread("dark.png") 

# calculating dimensions 
# height and width of the logo 
h_logo, w_logo, _ = logo.shape 

# height and width of the image 
h_img, w_img, _ = img.shape 

# calculating coordinates of center 
# calculating center, where we are going to 
# place our watermark 
center_y = int(h_img/2) 
center_x = int(w_img/2) 

# calculating from top, bottom, right and left 
top_y = center_y - int(h_logo/2) 
left_x = center_x - int(w_logo/2) 
bottom_y = top_y + h_logo 
right_x = left_x + w_logo 

# adding watermark to the image 
destination = img[top_y:bottom_y, left_x:right_x] 
result = cv2.addWeighted(destination, 1, logo, 0.5, 0) 

# displaying and saving image 
img[top_y:bottom_y, left_x:right_x] = result 
cv2.imwrite("watermarked.jpg", img) 
cv2.imshow("Watermarked Image", img) 
cv2.waitKey(0) 
cv2.destroyAllWindows()