The document describes three photo editing experiments:
1) Distorting a panoramic NASA photo into a square and using polar coordinates to make it look like a tiny planet.
2) Inverting and distorting a panoramic Google image using polar coordinates to look folded, and using the clone stamp tool to blend edges.
3) Altering a panoramic image size to be square, distorting it with polar coordinates to look folded, and using the clone stamp tool to improve blending.