title: Detecting 3-D motion field from range image sequences.
abstract: An algorithm for computing three-dimensional (3-D) velocity field and motion parameters from a range image sequence is presented. It is based on a new integral 3-D rigid motion invariant feature-the trace of a 3x3 "feature matrix" related to the moment of inertia tensor. This trace can be computed at every point of a moving surface and provides a quantitative measure of the local shape of the surface. Based on the feature's conservation along the trajectory of every moving point, a 3-D Flow Constraint Equation is formulated and solved for the velocity field. The robustness of the feature in presence of noise and discontinuity is analyzed.
authors.affiliation: Dept. of Adv. Dev., Adobe Syst. Inc., San Jose, CA.
authors.forename: K
authors.initials: K
authors.lastname: Chaudhury
authors.forename: R
authors.initials: R
authors.lastname: Mehrotra
authors.forename: C
authors.initials: C
authors.lastname: Srinivasan