OpenCV Python - Set background colour

Question

I am trying to remove a greyish background from a photo and replace it with a white one

so far I have this code:

image = cv2.imread(args[\"image\"])
         


        

Answer 1

First convert to GRAY and then threshold with cv2.threshold and then use numpy masking...

ret, thresh = cv2.threshold(cv2.cvtColor(img, cv2.COLOR_BGR2GRAY), 220, 255, cv2.THRESH_BINARY)
img[thresh == 255] = 255

If need black background set RHS to zero instead of 255