Non-rigid motion and structure from contour

Author

Pentland, Alex ; Horowitz, Bradley ; Sclaroff, Stan

Author_Institution

Media Lab., MIT, Cambridge, MA, USA

fYear

1991

fDate

7-9 Oct 1991

Firstpage

288

Lastpage

293

Abstract

The elastic properties of real materials constrain the types of non-rigid motion that can occur. The authors show that by modeling and simulating the physics of non-rigid motion they can obtain good estimates of both object shape and velocity from contour data. The underlying model is based on the finite element method, and decouples the degrees of freedom by breaking down object motion into rigid and non-rigid vibration modes. Shape estimates are integrated over time by use of an extended Kalman filter, resulting in a stable estimate of both 3D shape and 3D velocity. Examples using X-ray imagery (of the heat) are presented

Keywords

cardiology; finite element analysis; medical image processing; motion estimation; 3D shape; 3D velocity; FEM; X-ray imagery; contour data; elastic properties; extended Kalman filter; finite element method; heart motion; heart ventricle tracking; nonrigid motion; nonrigid structure; nonrigid vibration modes; object motion; rigid vibration modes; Finite element methods; Fourier transforms; Leg; Marine animals; Motion analysis; Muscles; Neck; Physics; Shape; X-ray imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Visual Motion, 1991., Proceedings of the IEEE Workshop on

Conference_Location

Princeton, NJ

Print_ISBN

0-8186-2153-2

Type

conf

DOI

10.1109/WVM.1991.212773

Filename

212773