PT Journal
AU Basso, C
   Verri, A
TI Fitting 3D morphable models using implicit representations
SO JVRB - Journal of Virtual Reality and Broadcasting
PY 2008
VL 4(2007)
IS 18
DI 10.20385/1860-2037/4.2007.18
DE 3D Morphable Models; implicit surface representations; non-rigid registration
AB We consider the problem of approximating the 3Dscan of a real object through an affine combination ofexamples. Common approaches depend either on theexplicit estimation of point-to-point correspondencesor on 2-dimensional projections of the target mesh;both present drawbacks. We follow an approach similarto [IF03] by representing the target via an implicitfunction, whose values at the vertices of the approximationare used to define a robust cost function. Theproblem is approached in two steps, by approximatingfirst a coarse implicit representation of the wholetarget, and then finer, local ones; the local approximationsare then merged together with a Poisson-basedmethod. We report the results of applying our methodon a subset of 3D scans from the Face RecognitionGrand Challenge v.1.0.
ER