Lips shape extraction via active shape model and local binary pattern

Authors:
L. Luis E. Morán;Raúl Pinto-Elías
Affiliations:
Centro Nacional de Investigación y Desarrollo Tecnológico, Cuernavaca, Morelos, México;Centro Nacional de Investigación y Desarrollo Tecnológico, Cuernavaca, Morelos, México
Venue:
MICAI'07 Proceedings of the artificial intelligence 6th Mexican international conference on Advances in artificial intelligence
Year:
2007

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Abstract

In this work we assume a frontal view of a face for the lips shape extraction, then the first step is locate a face inside a digital image, for this task we use techniques based in color to extract only the pixels with skin tone, a templates based in integral projections are applied to verify and locate the face, using integral projections, we locate and define a region of interest for lips. Previously a statistical model of lips (ASM) was created in the same way, local appearance patterns of landmarks are modeled using Local Binary Patterns (LBP), in this model we try to capture a variation from a closed lips to an opened lips. For the search task Local Binary Pattern Histogram (LBPH) are used.