[Corrected title and abstract below]
Hi Gang,
Tomorrow we will have a tea talk by David Rim (PhD student of Chris Pal) telling us about some recent vision work. Hope to see you all there.
Where: LISA lab (AA3256) When: Friday June 17th, 14h00
Title:
Realtime Performance-Based Facial Animation Thibaut Weise, Sofien Bouaziz, Hao Li, Mark Pauly EPL ACM Transactions on Graphics, Proceedings of the 38th ACM SIGGRAPH Conference and Exhibition 2011, 08/2011 – SIGGRAPH 2011 http://lgg.epfl.ch/~weise/publications/papers/rpbfa_siggraph2011_small.pdf
Abstract:
This paper presents a system for performance-based character ani- mation that enables any user to control the facial expressions of a digital avatar in realtime. The user is recorded in a natural envi- ronment using a non-intrusive, commercially available 3D sensor. The simplicity of this acquisition device comes at the cost of high noise levels in the acquired data. To effectively map low-quality 2D images and 3D depth maps to realistic facial expressions, we intro- duce a novel face tracking algorithm that combines geometry and texture registration with pre-recorded animation priors in a single optimization. Formulated as a maximum a posteriori estimation in a reduced parameter space, our method implicitly exploits temporal coherence to stabilize the tracking. We demonstrate that compelling 3D facial dynamics can be reconstructed in realtime without the use of face markers, intrusive lighting, or complex scanning hardware. This makes our system easy to deploy and facilitates a range of new applications, e.g. in digital gameplay or social interactions.
Cheers, Aaron
-- Aaron C. Courville Département d’Informatique et de recherche opérationnelle Université de Montréal email:Aaron.Courville@gmail.com
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