A Family of Barycentric Coordinates for Co‐Dimension 1 Manifolds with Simplicial Facets. (12th August 2019)

• Record Type: Journal Article
• Authors: Yan, Z.; Schaefer, S.
• Is Part Of: Computer graphics forum. Volume 38:Number 5(2019)
• Page Start: 75
• Page End: 83
• Publication Date: 2019-08-12
• Subjects: CCS Concepts -- Computing methodologies → Shape modeling; Parametric curve and surface models; Computer graphics -- Periodicals; 006.605
• DOI: 10.1111/cgf.13790
• Languages: English
• ISSNs: 0167-7055

Abstract

Abstract: We construct a family of barycentric coordinates for 2D shapes including non‐convex shapes, shapes with boundaries, and skeletons. Furthermore, we extend these coordinates to 3D and arbitrary dimension. Our approach modifies the construction of the Floater‐Hormann‐Kós family of barycentric coordinates for 2D convex shapes. We show why such coordinates are restricted to convex shapes and show how to modify these coordinates to extend to discrete manifolds of co‐dimension 1 whose boundaries are composed of simplicial facets. Our coordinates are well‐defined everywhere (no poles) and easy to evaluate. While our construction is widely applicable to many domains, we show several examples related to image and mesh deformation.