Title:
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Skeleton and shape adjustment and tracking in multicamera environments
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Author:
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Alcoverro Vidal, Marcel; Casas Pla, Josep Ramon; Pardàs Feliu, Montse
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Other authors:
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Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. GPI - Grup de Processament d'Imatge i Vídeo |
Abstract:
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In this paper we present a method for automatic body model adjustment and motion tracking in multicamera environments.We introduce a set of shape deformation parameters based on linear blend skinning,
that allow a deformation related to the scaling of the distinct bones of the body model skeleton, and a deformation in the radial direction of a bone. The adjustment of a generic body model to a specific subject
is achieved by the estimation of those shape deformation parameters.
This estimation combines a local optimization method and hierarchical
particle filtering, and uses an efficient cost function based on foreground
silhouettes using GPU. This estimation takes into account anthropometric constraints by using a rejection sampling method of propagation of particles. We propose a hierarchical particle filtering method for motion tracking using the adjusted model. We show accurate model adjustment and tracking for distinct subjects in a 5 cameras set up. |
Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal::Processament de la imatge i del senyal vídeo -Kinematics -Image processing -Body movement -Cinemàtica -Imatges -- Processament |
Rights:
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Document type:
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Article - Published version Article |
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