Automatically remove frames from pictures of paintings.

remove-frames.py

# set the file paths
from_path = 'art/wikiart/'
to_path   = 'art/cropped/'

# set up some paramters
thresh1 = 15000
thresh2 = 30
pad = 30

# loop through each of the files
for file in listdir(from_path):
    img = Image.open(from_path + '/' + file)
    w_pad = img.width//pad
    h_pad = img.height//pad

    # get the median RGB value
    r_global_med = np.median(np_img[h_pad:-h_pad,w_pad:-w_pad,0:1])
    g_global_med = np.median(np_img[h_pad:-h_pad,w_pad:-w_pad,1:2])
    b_global_med = np.median(np_img[h_pad:-h_pad,w_pad:-w_pad,2:3])

    # find the inner edges of the frames
    left = find_left()
    top = find_top()
    right = find_right(img.width)
    bottom = find_bottom(img.height)
    
    # crop the image
    cropped_img = img.crop((left, top, right, bottom))
    
    # save it
    cropped_img.save(to_path  + file[:-4] + "_cropped.jpg")