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If you'd like to get a broad view of what I work with, take a look at the latest book, launched in November 2010, that represents the state-of-the-art, "Computer Vision: Algorithms and Applications", by Richard Szeliski. The digital version of this book is freely available as a PDF at the author's website
http://szeliski.org/Book. And the cover reflects 3D reconstruction algorithms that I've been trying to extend through the use of curve and surface differential geometry!