Skinning with dual quaternions
Citation:Kavan L., Collins S., Zara J. and O'Sullivan C. 'Skinning with dual quaternions' in proceedings of the Symposium on Interactive 3D Graphics and Games (I3D'07) Seattle, WA, April 30 - May 2, 2007, pp. 39 - 46.
sdq-i3d07.pdf (Final paper) 4.291Mb
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 paper, we present a novel GPU-friendly skinning algorithm based on dual quaternions. We show that this approach solves the artifacts of linear blend skinning at minimal additional cost. Upgrading an existing animation system (e.g., in a videogame) from linear to dual quaternion skinning is very easy and has negligible impact on run-time performance.
Higher Education Authority
Author: O'SULLIVAN, CAROL ANN
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