期刊
COMPUTERS IN INDUSTRY
卷 64, 期 9, 页码 1399-1410出版社
ELSEVIER
DOI: 10.1016/j.compind.2013.04.003
关键词
Photometric stereo; Shape-from-shading; 3D surface reconstruction; Facial geometry capture; Image processing
资金
- EPSRC [EP/E028659/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/E028659/1] Funding Source: researchfish
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.
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