Abstract-We propose a nonlinear model for tracking a slowly deforming and moving contour despite significant occlusions. The contour is represented implicitly, and its motion is described by the action of a finite-dimensional group; we estimate both the implicit representation of the contour (its shape) and its motion. Our contribution consists in defining a generative model that is not subject to arbitrary re-parameterization, choice of (non-unique) key points or control points, and allows enforcing a dynamical model of motion when it is available. Otherwise, our approach allows enforcing simple phenomenological models, for instance low acceleration or low jerk.
By incorporating the prior information of the system dynamics into the deformation framework, Jackson et al. REF proposed a nonlinear dynamical model for tracking a slowly deforming and moving contour, with the contour implicitly represented as the infinite-dimensional locus of zeros of a given function.
Tracking deformable moving objects under severe occlusions
2004 43rd IEEE Conference on Decision and Control (CDC) (IEEE Cat. No.04CH37601)
2004 43rd IEEE Conference on Decision and Control (CDC) (IEEE Cat. No.04CH37601)
Computer Science