%0 Journal Article %T Fitting 3D morphable models using implicit representations %A Basso, Curzio %A Verri, Alessandro %J JVRB - Journal of Virtual Reality and Broadcasting %D 2008 %V 4(2007) %N 18 %@ 1860-2037 %F basso2008 %X 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. %L 004 %K 3D Morphable Models %K implicit surface representations %K non-rigid registration %R 10.20385/1860-2037/4.2007.18 %U http://nbn-resolving.de/urn:nbn:de:0009-6-12799 %U http://dx.doi.org/10.20385/1860-2037/4.2007.18