Face/Image Averaging

Is it possible in Processing or in P5 to create blended images. I have seen this done in Python, so it would seem like it would be possible in other object oriented languages. Essentially you have to find a way to line up similar pieces of all photos that will be blended, and then find the average color of each pixel to create an "average" image. This is a link to the "averaged" PGA player, by averaging the PGA Profile picture of the top 500 Golfer's: https://www.reddit.com/r/dataisbeautiful/comments/7418ti/combined_faces_of_top_500_professional_golfers_oc/