Motion analysis of a deformable object using subset correspondence

A method is proposed to estimate generalized three-dimensional motion parameters for a deformable object using only subset correspondences between two successive time frames, eliminating a major preprocessing step. Only a small amount of information has to be processed, reducing the computation time significantly. The movement in three-dimensional space thus can be modeled by the deformation undergone by the object during the specified time instants, a rotation about a fixed axis passing through its centroid, and a translation. The goal is to estimate the generalized motion parameters (i.e. deformation, rotation, and translational components) with as little information (i.e. point/line correspondence) as possible from the data.<>