Face sub-space determination

Details Face sub-space determination Face sub-space determination

G - Physics

06

K

G06K 9/00 (2006.01)

Patent

CA 2356252

A method of determining face sub-spaces. The method comprises making initial estimates of the sub-spaces, for example lighting, pose, identity and expression, using Principle Component Analysis on appropriate groups of faces. The method further comprises applying an iterative algorithm to image codings to maximise the probability of coding across these non-orthogonal sub-spaces, obtaining the projection on each sub-space, and recalculating the spaces.

L'invention concerne un procédé permettant de déterminer des sous-ensembles d'espace de visage, qui consiste à effectuer une estimation initiale des sous-espaces (par exemple, éclairage, pose, identité et expression) en utilisant l'analyse composante principale sur des groupes de visages appropriés. Le procédé consiste en outre à appliquer un logarithme itératif aux codages d'image afin d'optimiser la probabilité de codage sur ces sous-ensembles d'espace non orthogonaux, à établir la projection sur chaque sous-ensemble d'espace et à recalculer les espaces.

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