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Shape deformation using a skeleton to drive simplex transformations

Yan, Han-Bing, Hu, Shi-Min ORCID:, Martin, Ralph Robert and Yang, Yong-Liang 2008. Shape deformation using a skeleton to drive simplex transformations. IEEE Transactions on Visualization and Computer Graphics 14 (3) , pp. 693-706. 10.1109/TVCG.2008.28

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This paper presents a skeleton-based method for deforming meshes (the skeleton need not be the medial axis). The significant difference from previous skeleton-based methods is that the latter use the skeleton to control movement of vertices, whereas we use it to control the simplices defining the model. By doing so, errors that occur near joints in other methods can be spread over the whole mesh, via an optimization process, resulting in smooth transitions near joints of the skeleton. By controlling simplices, our method has the additional advantage that no vertex weights need be defined on the bones, which is a tedious requirement in previous skeleton-based methods. Furthermore, by incorporating the translation vector in our optimization, unlike other methods, we do not need to fix an arbitrary vertex, and the deformed mesh moves with the deformed skeleton. Our method can also easily be used to control deformation by moving a few chosen line segments, rather than a skeleton.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Computer Science & Informatics
Subjects: Q Science > QA Mathematics > QA76 Computer software
Uncontrolled Keywords: Shape Deformation; Skeleton; Simplex Transformation; Animation
Publisher: IEEE
ISSN: 1077-2626
Funders: EPSRC
Last Modified: 17 Oct 2022 09:42

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