The project is "Images of the Russian Empire: Colorizing the Prokudin-Gorskii photo collection". This has been a very fun project as I have learned about the manipulation of image files (which, with libraries, can be manipulated as arrays of arrays in Python). It is interesting, too, to see the power of the computer in aligning the images.
My approach was entirely the one described on the course website. There were points that were open, however. Here were my choices:
skimage.transform.pyramid_gaussian, which outputs a generator. I immediately process the generator into a Python list.
I am extremely impressed by the efficiency gains by using the pyramid approach. Here is an image of the notes I wrote to help me conceptualize the effect of an offset of 2 pixels on an image whose width and height has been halved twice.
These are the example images for the project as listed here.