A sparse representation method for determining the optimal illumination directions in Photometric Stereo

Argyriou, V., Zafeiriou, S., Villarini, B. and Petrou, M. 2013. A sparse representation method for determining the optimal illumination directions in Photometric Stereo. Signal Processing. 93 (11), pp. 3027-3038. doi:10.1016/j.sigpro.2013.04.026

TitleA sparse representation method for determining the optimal illumination directions in Photometric Stereo
AuthorsArgyriou, V., Zafeiriou, S., Villarini, B. and Petrou, M.
Abstract

The analysis of surface and texture details with the help of changes in illumination direction is a key task in 3D shape reconstruction either based on Photometric Stereo, Shape from Shading or Structured Light. This paper presents a novel approach for estimating the optimal illumination directions for the accurate calculation of the surface normals, while minimising the presence of shadows and the reconstructed albedo error. The method regards a sparse representation of the illumination arrangement and estimates the light directions using l1 optimisation. The Lambertian model is considered and the theoretical development is demonstrated with experimental results.

KeywordsL1
Photometric stereo
3D imaging
Face reconstruction
JournalSignal Processing
Journal citation93 (11), pp. 3027-3038
ISSN0165-1684
Year2013
PublisherElsevier
Digital Object Identifier (DOI)doi:10.1016/j.sigpro.2013.04.026
Publication dates
Published09 May 2013

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