title: Three-dimensional motion analysis by direct matching.
abstract: We describe a direct-matching approach to determining motion of a rigid body from two time-sequential perspective views. The method does not require finding feature correspondences. It is valid under the following assumptions: Brightness constancy--the brightness of an image point corresponding to a fixed object point does not change after motion. The mathematical form of the object surface is known to within a finite number of parameters. We also show how the computation can be simplified in the case of small motion.
mesh_terms: D006801:Humans; D008433:Mathematics; D008959:Models, Neurological; D008960:Models, Psychological; D009039:Motion Perception