Journal of East China Normal University(Natural Science) >

2024 , Vol. 2024 >Issue 2: 143 - 156

DOI: https://doi.org/10.3969/j.issn.1000-5641.2024.02.015

Computer Science

Skinning in character animation based on implicit surface

  • Sijing RAO ,
  • Ying XIN ,
  • Junjun PAN
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  • 1. Faculty of Information Technology, Beijing University of Technology, Beijing　100124, China
    2. State Key Laboratory of Virtual Reality Technology and Systems, Beihang University, Beijing　100191, China

Received date: 2023-11-09

  Online published: 2024-03-18

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Abstract

This paper presents a method for skinning in character animation, utilizing implicit surfaces, which is designed to deform animated models with skeleton and associated skinning weights．This method reconstructs the mesh around a given skeleton with the Hermite radial basis function and Poisson-disk sampling on surfaces．This process transforms the character’s volume into a set of localized 3D scalar fields and preserves the original mesh properties．Field functions are then constructed and employed to refine the results obtained from the geometric skinning technique．The implicit method, combined with two types of combination operators, generates realistic skin deformations around the human skeleton model finally．The method does not cause candy twist and joint swelling problems, and can handle skin collision and muscle protrusions．Due to its post-processing feature, this method is very suitable for animation generation in standard production pipeline．

Key words： implicit method; skinning; Hermite radial basis function; Poisson-disk sampling; field function

Cite this article

Sijing RAO , Ying XIN , Junjun PAN . Skinning in character animation based on implicit surface[J]. Journal of East China Normal University(Natural Science), 2024 , 2024(2) : 143 -156 . DOI: 10.3969/j.issn.1000-5641.2024.02.015

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