I don't know Robert Gaskell but from what I read, he'd make a great keynote speaker at one of our conferences! He maps bodies in solar system to 40 centimeters (yes, higher res than our commercial satellites!) using tereo-photo-clinometry techniques which use light from various directions to develop 3D terrain models. From what I read there's a bit of Photosynth-y stuff going on, too: "Gaskell has created sophisticated software that combines hundreds of spacecraft images of varying resolution to produce the maps." I for one want to learn more about that!
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Astrobio.net