Controlled metamorphosis between skeleton-driven animated polyhedral meshes of arbitrary topologies

This source preferred by Oleg Fryazinov, Alexander Pasko and Valery Adzhiev

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Authors: Kravtsov, D., Fryazinov, O., Adzhiev, V., Pasko, A. and Comninos, P.

Journal: Computer Graphics Forum

Volume: 33

Issue: 1

Pages: 64-72

eISSN: 1467-8659

ISSN: 0167-7055

DOI: 10.1111/cgf.12254

Enabling animators to smoothly transform between animated meshes of differing topologies is a long-standing problem in geometric modelling and computer animation. In this paper, we propose a new hybrid approach built upon the advantages of scalar field-based models (often called implicit surfaces) which can easily change their topology by changing their defining scalar field. Given two meshes, animated by their rigging-skeletons, we associate each mesh with its own approximating implicit surface. This implicit surface moves synchronously with the mesh. The shape-metamorphosis process is performed in several steps: first, we collapse the two meshes to their corresponding approximating implicit surfaces, then we transform between the two implicit surfaces and finally we inverse transition from the resulting metamorphosed implicit surface to the target mesh. The examples presented in this paper demonstrating the results of the proposed technique were implemented using an in-house plug-in for Maya™. © 2013 The Authors Computer Graphics Forum © 2013 The Eurographics Association and John Wiley & Sons Ltd.

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