Thanks, that looks pretty decent. It's exactly half of what I'm looking for, and if need be, I'll use two separate tools. The other half of what I'd like is software that would take two photos that only partially overlap, use the same types of techniques to align them precisely, add them together (using the parts that do not overlap unchanged, and interpolating in the parts that do overlap so there's a smooth transition), and return a panorama shot. Does that make sense?