I am taking two similar images and putting one on top of the other as semi transparent overlay. What I'm trying to achieve now is to compare the difference between them and transform (scale, crop, move and rotate) the image on top so it matches the image underneath as good as it can.

Here is a visual representation:

I'm trying to achieve this in Flutter, but other approaches to a solution help aswell.

Edit: I already made this with a Stack widget I can transform the image on top by panning. But I am looking for a way to make this thing automated by analyzing the images.