E. Mathematics of Image Registration: Given two images of the same object (possibly at different
times, from different distances or angles or points of view, with distortion from a lens or other
intervening medium, or using different imaging technologies), one would like to find a mapping
that identifies points of one image with points in the other. An ideal mapping should have various
features: in particular, it should be relatively smooth, and the data should fit the mapping well.
(Criteria such as these can of course be made more precise using appropriate mathematical and
statistical language.) Since an "ideal" mapping may be computationally infeasible (or may not
even exist) the goal is to develop mathematical algorithms to find a mapping of a given specified
type (e.g., definable by Bézier transformations) and which is as close to ideal as various
practical limitations admit.