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Harmonic skeleton for realistic character animation

Aujay Grégoire, Hétroy Franck, Lazarus Francis, Depraz Christine
In Metaxas D. et Popović J. editors, Symposium on Computer Animation, SCA 07. ACM-Siggraph/Eurographics, San Diego, California, Etats-Unis, août 2007. pages 151–160. Eurographics, 2007.
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Current approaches to skeleton generation are based on topological and geometrical information only; this can be insufficient for realistic character animation, since the location of the joints does not usually match the real bone structure of the model. This paper proposes the use of anatomical information to enhance the skeleton. Using a harmonic function, this information can be recovered from the skeleton itself, which is guaranteed not to have undesired endpoints. The skeleton is computed as a Reeb graph of such a function over the surface of the model. Starting from one point selected on the head of the character, the entire process is fast, automatic and robust; it generates skeletons whose joints can be associated with the character's anatomy. Results are provided, including a quantitative validation of the generated skeletons.

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BibTex References

@inproceedings{AHLD07,
author = {Gr\'egoire Aujay and Franck H\'etroy and Francis Lazarus and Christine Depraz},
title = {Harmonic skeleton for realistic character animation},
booktitle = {Symposium on Computer Animation, SCA 07, August, 2007},
editor = {Dimitris Metaxas and Jovan Popovi\'c},
organization = {ACM-Siggraph/Eurographics},
address = {San Diego, California, Etats-Unis},
publisher = {Eurographics},
pages = {151--160},
keywords = {animation skeleton, character animation, Reeb graph, semantic decomposition},
month = aou,
year = 2007
}

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