research-article

Geometric skinning with approximate dual quaternion blending

Authors:

Ladislav Kavan,

Steven Collins,

Carol O'SullivanAuthors Info & Claims

ACM Transactions on Graphics (TOG), Volume 27, Issue 4

Article No.: 105, Pages 1 - 23

https://doi.org/10.1145/1409625.1409627

Published: 04 November 2008 Publication History

Abstract

Skinning of skeletally deformable models is extensively used for real-time animation of characters, creatures and similar objects. The standard solution, linear blend skinning, has some serious drawbacks that require artist intervention. Therefore, a number of alternatives have been proposed in recent years. All of them successfully combat some of the artifacts, but none challenge the simplicity and efficiency of linear blend skinning. As a result, linear blend skinning is still the number one choice for the majority of developers. In this article, we present a novel skinning algorithm based on linear combination of dual quaternions. Even though our proposed method is approximate, it does not exhibit any of the artifacts inherent in previous methods and still permits an efficient GPU implementation. Upgrading an existing animation system from linear to dual quaternion skinning is very easy and has a relatively minor impact on runtime performance.

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Index Terms

Geometric skinning with approximate dual quaternion blending
1. Computing methodologies
  1. Artificial intelligence
    1. Computer vision
      1. Computer vision representations
        Hierarchical representations
  2. Computer graphics
    1. Animation
    2. Shape modeling

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cover image ACM Transactions on Graphics

ACM Transactions on Graphics Volume 27, Issue 4

October 2008

92 pages

ISSN:0730-0301

EISSN:1557-7368

DOI:10.1145/1409625

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Copyright © 2008 ACM.

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Publication History

Published: 04 November 2008

Accepted: 01 June 2008

Revised: 01 March 2008

Received: 01 July 2007

Published in TOG Volume 27, Issue 4

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