Abstract
In this research we describe 3D data processing operations which were applied to 3D laser scans of human heads before 3D eigenfaces could be obtained both in shape space and color space. Modified median filtering was used to remove laser scan spikes. 3D scans registration exploits mapping of 3D mesh to the reference 3D mesh. The mesh is based on Facial Action Points (FAP) of MPEG-4 and the mapping itself on barycentric local coordinates in each triangle. 3D eigenfaces are computed by Singular Value Approximation (SVA) applied directly to 3D scans avoiding computation of prohibitively large covariance matrix.
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