A Framework for Modeling the Appearance of 3D Articulated Figures

This paper describes a framework for constructing a linear subspace model of image appearance for complex articulated 3D figures such as humans and other animals. A commercial motion capture system provides 3D data that is aligned with images of subjects performing various activities. Portions of a limb’s image appearance are seen from multiple views and for multiple subjects. From these partial views, weighted principal component analysis is used to construct a linear subspace representation of the “unwrapped” image appearance of each limb. The linear subspaces provide a generative model of the object appearance that is exploited in a Bayesian particle filtering tracking system. Results of tracking single limbs and walking humans are presented.

• Type: Conference
• Year: 2000
• Where: FGR
• Authors: Hedvig Sidenbladh, Fernando De la Torre, Michael J. Black
• Keywords: Biometrics, FGR 2000, Image Appearance, Linear Subspace Model, Linear Subspaces