ISSN : 1796-2048
Volume : 1    Issue : 4    Date : July 2006

Registration of Expressions Data using a 3D Morphable Model
Curzio Basso and Thomas Vetter
Page(s): 37-45
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The registration of 3D scans of faces is a key step for many applications, in particular for building 3D
Morphable Models. Although a number of algorithms are already available for registering data with
neutral expression, the registration of scans with arbitrary expressions is typically performed under
the assumption of a known, fixed identity. We present a novel algorithm which breaks this
restriction, allowing to register 3D scans of faces with arbitrary identity and expression. Furthermore,
our algorithm can process incomplete data, yielding results which are both continuous and with low
reconstruction error. Even in the case of complete, expression-less data, our method can yield
better results than previous algorithms, due to an adaptive smoothing, which regularizes the results
surface only where the estimated correspondence is unreliable.

Index Terms
3D morphable models, 3D registration, facial expressions, surface reconstruction.