A Hu moment invariant as a shape circularity measure

Paul Rosin

Jan. 1, 2010

In this paper we propose a new circularity measure which defines the degree to which a shape differs from a perfect circle.

Detecting Design Intent in Approximate CAD Models using Symmetry

Ralph Martin

Jan. 1, 2010

Finding design intent embodied as high-level geometric relations between a CAD model's sub-parts facilitates various tasks such as model editing and analysis.

Automatic Range Image Registration in the Markov Chain

Yonghuai Liu

Jan. 1, 2010

In this paper, a novel entropy that can describe both long and short-tailed probability distributions of constituents of a thermodynamic system out of its thermodynamic limit is first derived from the Lyapunov function for a Markov chain.

Simulation of defects in bubble clusters

Jan. 1, 2010

Topological defects in a foam, either isolated (disclinations and dislocations) or in pairs, affect the energy and stress, and play an important role in foam deformation.

Active Contouring Based on Gradient Vector Interaction and Constrained Level Set Diffusion

Xianghua Xie

Jan. 1, 2010

This paper presents an extension of our recently introduced MAC model to deal with the initialization dependency problem that commonly appears in edge-based approaches.

Smooth Graphs for Visual Exploration of Higher-Order State Transitions

Mark Jones, Robert S Laramee

Nov. 1, 2009

In this paper, we present a new visual way of exploring state sequences in large observational time-series.