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OmniScriptum Reconnaissance de visages par approches multi-échelle: Extraction de caractéristiques et Classification (Omn.Pres.Franc.)

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Description

La reconnaissance de visages est une technique biométrique qui consiste à rechercher l’identité requête parmi un ensemble d’individus préenregistrés. Dans la première partie de ce livre, nous proposons une nouvelle mesure de similarité bidimensionnelle pondérée. Le calcul de distance s’effectue donc entre deux matrices caractéristiques au lieu de deux vecteurs et les poids de pondération sont l'inverse des valeurs propres de la matrice de covariance des matrices de visages triées dans l'ordre décroissant. Dans la deuxième partie, nous proposons une nouvelle technique bidimensionnelle pour l’extraction de signatures dite analyse en composantes principales diagonale bilatérale (Bilateral DiaPCA : BDiaPCA). Le principe consiste à projeter les images faciales originales à gauche et à droite en utilisant un nouvel espace linéaire déterminé par la matrice de covariance des matrices de visages diagonales. Cette représentation diagonale préserve certaines corrélations entre les lignes et colonnes tout en réduisant la taille des matrices. Nous envisageons, également, l’identification d’individus par deux modalités faciales; le visage entier et la région des yeux.

Product Specifications

Format
paperback
Domain
Amazon UK
Release Date
20 January 2015
Listed Since
13 February 2015

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No barcode data available

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