|Title||A sparse representation method for determining the optimal illumination directions in Photometric Stereo|
|Authors||Argyriou, V., Zafeiriou, S., Villarini, B. and Petrou, M.|
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.
|Journal citation||93 (11), pp. 3027-3038|
|Digital Object Identifier (DOI)||doi:10.1016/j.sigpro.2013.04.026|
|Published||09 May 2013|