Compression and Direct Manipulation of Complex Blendshape Models

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We present a method to compress complex blendshape models and thereby enable interactive, hardware-accelerated animation of these models. Facial blendshape models in production are typically large in terms of both the resolution of the model and the number of target shapes. They are represented by a single huge blendshape matrix, whose size presents a storage burden and prevents real-time processing. To address this problem, we present a new matrix compression scheme based on a hierarchically semi-separable (HSS) representation with matrix block reordering. The compressed data are also suitable for parallel processing. An efficient GPU implementation provides very fast feedback of the resulting animation. Compared with the original data, our technique leads to a huge improvement in both storage and processing efficiency without incurring any visual artifacts. As an application, we introduce an extended version of the direct manipulation method to control a large number of facial blendshapes efficiently and intuitively
Publisher
ACM SIGGRAPH Symposium on Computer Animation
Issue Date
2011-12-12
Language
ENG
Citation

SIGGRAPH ASIA 2011

ISSN
0730-0301
URI
http://hdl.handle.net/10203/169865
Appears in Collection
GCT-Conference Papers(학술회의논문)
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