Motion estimation of elastic articulated objects from image contours

Abstract

This paper presents a new model of elastic articulated objects based on revolving conic surface. The model includes three-dimensional object skeleton and deformable surfaces that can represent the deformation of human body surfaces. In each limb, surface deformation is represented by adjusting only two deformation parameters. Then, the deformation parameters are determined by corresponding two-dimensional image contours from a sequence of stereo images. The three-dimensional motion parameters are estimated based on the skeleton points. The algorithm presented in this paper includes skeleton-based parameter estimation of motion and parameter determination of deformable surfaces.

Keywords:

• ELASTIC ARTICULATED OBJECTS
• HUMAN BODY MODELLING
• REVOLVING CONIC SURFACES
• MOTION ESTIMATION