Recently I wrote a blog about panoramic photography and about post processing.  I found this related video above which was a part of my research in collaboration with Max Chen and Fredo Durand at MIT around 2000.  This was the panorama that I took of the Omni Parker House Hotel mentioned in this post.  This was created from a single panoramic image.  I will certainly write more about this topic, but I want to drive home the fact that post processing of photographs is not limited to pixels and colors — geometry is certainly a part of it.  Case and point — we live in a three-dimensional space and photos are projections of that captured light.