from PIL import Image
import os

img_dir = "./sal1000-2"
area_left = (250,340,350+16,340+37)
area_right = (419,340,419+16,340+37)
left_init = ()
right_init = ()
left = ()
right = ()

flag = 0


for file in sorted(os.listdir(img_dir)):
        if file.endswith(".jpg"):
            img = Image.open(img_dir+"/"+file)
            # CROP THE IMAGE
            cropped_left = img.crop(area_left)
            cropped_right = img.crop(area_right)
            # RESIZE THE IMAGES
            resized_left = cropped_left.resize((1,1))
            resized_right = cropped_right.resize((1,1))

            # Keep the initial values from the first image
            if flag == 0 :
                left_init = resized_left.getpixel((0,0))
                right_init = resized_right.getpixel((0,0))
                flag = 1
            else :
                left = resized_left.getpixel((0,0))
                right = resized_right.getpixel((0,0))

                redL = left[0]-left_init[0]
                greenL = left[1]-left_init[1]
                blueL = left[2]-left_init[2]
                redR = right[0]-right_init[0]
                greenR = right[1]-right_init[1]
                blueR = right[2]-right_init[2]

                print("LEFT: t", str(greenL-blueL), "t RIGHT: t", str(greenR-blueR), file)