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Fakultät für Informatik

177. Informatik-Kolloquium

Ing. Libor Váša, Ph.D.


University of West Bohemia
Centre of Computer Graphics and Visualization

"Compressing animated meshes: low data rate and low perceived distortion"


Mittwoch, 30.11.2011
14.00 Uhr, 1/336

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Animated triangular meshes with shared connectivity are an attractive kind of data that is used in multitude of applications, from entertainment and gaming to sophisticated scientific tasks. Current hardware allows processing of highly detailed datasets, however transmission and storage of the large quantities of data remains a challenging problem.

Lossy compression is one of the tools that have been used previously with great success for encoding audio and video data. Dynamic meshes are especially interesting from his point of view, because there is a lot of spatial and temporal coherence in the data that can be exploited in efficient algorithms.

In the talk I will summarize the recent advances in efficient coding of animated triangle meshes that allow compression to less than 0.5 bits per vertex without any visible distortion. I will also examine the problem of measuring and minimizing perceived distortion, which seems to be crucial for the future development of multimedia compression algorithms in general.