Generating Quad Mesh of 3D Articulated Shape for Sculpting Modeling

Abstract

In this paper, we propose a novel quad remeshing algorithm for articulated shapes. Different from existing methods that are essentially based on local analysis to align with local geometric features, our method focuses on the global structure and generates quad mesh with edge flow aligning with the skeleton. To achieve this, we firstly extract the skeleton from 3D shape. It captures the global structure of the shape and decomposes the shape into feature parts. We detect tube-like parts and build sweeping surface on them. For joint part connecting tube-like parts, we generate a smooth cross field interpolating the directions from its adjacent tube-like parts. Using this cross field, we generate the quad mesh of joint part. It smoothly connects adjacent sweep surfaces. The mesh models generated in our system greatly benefit the sculpting operators for sculpting modeling and skeleton-based animation.

Keywords

• sculpting modeling
• quadrangulation
• skeleton
• direction field
• parametrization