Title: Relevance analysis of 3D shape descriptors on interest points and regions of the face

Authors: Alexander Cerón Correa; Augusto Salazar; Flavio Prieto

Addresses: Grupo de Investigación en Multimedia - (GIM), Universidad Militar Nueva Granada, Cra 11 No. 101 - 80, Bogotá, Colombia ' GTA Percepción y Control Inteligente, Universidad Nacional de Colombia - Sede Manizales, Km 7 vía al aeropuerto la Nubia, Manizales, Colombia ' Universidad Nacional de Colombia - Sede Bogotá, Departamento de Ingeniería Mecánica y Mecatrónica, Carrera 30 No. 45 - 03 Bogotá, Colombia

Abstract: The human face is made from different morphological structures that can be represented in 3D by descriptors. This work presents an analysis of the relevance of descriptors such as main curvatures, mean curvature, Gaussian curvature, shape index, curvedness, multi-resolution spin images, and the multi-scale shape index, all of them in regions of the human face. This study aims to determine which descriptors offer the most relevant information in particular locations of the face by using the Fisher's discriminant analysis. Therefore, the most adequate descriptor that can be used in facial anthropometry or face recognition can be identified.

Keywords: 3D curvature; 3D facial surface; discriminant analysis; multi-resolution; spin images; multi-scale; shape index; principal curvatures; shape descriptors; facial anthropometry; face recognition; biometrics; human face.

DOI: 10.1504/IJSISE.2012.047784

International Journal of Signal and Imaging Systems Engineering, 2012 Vol.5 No.2, pp.110 - 122

Received: 02 Sep 2011
Accepted: 12 Jan 2012

Published online: 31 Dec 2014 *

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