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Type: Artigo de periódico
Title: Robust 3D face capture using example-based photometric stereo
Author: Saracchini, RFV
Stolfi, J
Leitao, HCG
Atkinson, GA
Smith, ML
Abstract: We show that using example-based photometric stereo, it is possible to achieve realistic reconstructions of the human face. The method can handle non-Lambertian reflectance and attached shadows after a simple calibration step. We use spherical harmonics to model and de-noise the illumination functions from images of a reference object with known shape, and a fast grid technique to invert those functions and recover the surface normal for each point of the target object. The depth coordinate is obtained by weighted multi-scale integration of these normals, using an integration weight mask obtained automatically from the images themselves. We have applied these techniques to improve the PHOTOFACE system of Hansen et al. (2010). (C) 2013 Elsevier B.V. All rights reserved.
Subject: Photometric stereo
3D surface reconstruction
Facial geometry capture
Image processing
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/j.compind.2013.04.003
Date Issue: 2013
Appears in Collections:Unicamp - Artigos e Outros Documentos

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