opencv - Image comparison in Python

Question

I wish to compare difference between two images. I have a solution in hand via 'opencv' to compare whole image. However, I want to improve further to compare specific portion of the images.

Lets say: Image 1 has an rectangular box in it.

Image 2 has an similar (but not same) rectangular box in it.

I want to compare only those specific area (text box) NOT the whole image. is there a way to do it? Kindly suggest.

Answer 1

You could use ImageHash

from PIL import Image
import imagehash

hash = imagehash.average_hash(Image.open('test.png'))
otherhash = imagehash.average_hash(Image.open('other.bmp'))

print(hash - otherhash)