Original cat image by Harald Wehner [Public domain], via Wikimedia Commons [https://commons.wikimedia.org/wiki/File:Cat-MaineCoon-Lara1.png]
Original sheep image by Natural Resources Conservation Service [Public domain], via Wikimedia Commons[https://commons.wikimedia.org/wiki/File:Sheep_and_goats.jpg]
Original treeswallow image by Leupold, James C. - U.S. Fish and Wildlife Service [Public domain], via Wikimedia Commons [https://commons.wikimedia.org/wiki/File:Treeswallow3.JPG]

Linear Combinations of Images

We can treat each image as a very large array of data: for each pixel, we have its red, green, and blue values. This interactive turns each image into a vector, takes a linear combination of those vectors, and turns the result back into an image. These techniques are used in fading between images and image recognition.