Article

Photometric stereo with an arbitrary number of illuminants

Communications and Signal Processing Group, Electrical and Electronic Engineering Department, Imperial College London, London SW7 2AZ, UK
Computer Vision and Image Understanding 01/2010; DOI:10.1016/j.cviu.2010.05.002 pp.887-900
Source: DBLP

ABSTRACT We present an optimal generalisation of the 4-light photometric stereo technique for an arbitrary number of Q illuminants. We assume that the surface reflectance can be approximated by the Lambertian model plus a specular reflection. The algorithm works in a recursive manner eliminating the pixel intensities affected by shadows or highlights, based on a least squares error technique, retaining only the information coming from illumination directions that can be used for photometric stereo reconstruction of the normal of the corresponding surface patch. We report results for both simulated and real surfaces and compare them with the results of other state of the art photometric stereo algorithms.

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Keywords

4-light photometric stereo technique
 
algorithm works
 
art photometric stereo algorithms
 
optimal generalisation
 
photometric stereo reconstruction
 
pixel intensities
 
Q illuminants
 
recursive manner
 
specular reflection
 
surface reflectance
 

Vasileios Argyriou