Jiuai Sun
Object surface recovery using a multi-light photometric stereo technique for non-Lambertian surfaces subject to shadows and specularities
Sun, Jiuai; Smith, Melvyn; Smith, Lyndon; Midha, Sagar; Bamber, Jeff
Authors
Melvyn Smith Melvyn.Smith@uwe.ac.uk
Research Centre Director Vision Lab/Prof
Lyndon Smith Lyndon.Smith@uwe.ac.uk
Professor in Computer Simulation and Machine
Sagar Midha
Jeff Bamber
Abstract
This paper presents a new multi-light source photometric stereo system for reconstructing images of various characteristics of non-Lambertian rough surfaces with widely varying texture and specularity. Compared to the traditional three-light photometric stereo method, extra lights are employed using a hierarchical selection strategy to eliminate the effects of shadows and specularities, and to make the system more robust. We also show that six lights is the minimum needed in order to apply photometric stereo to the entire visible surface of any convex object. Experiments on synthetic and real scenes demonstrate that the proposed method can extract surface reflectance and orientation effectively, even in the presence of strong shadows and highlights. Hence, the method offers advantages in the recovery of dichromatic surfaces possessing rough texture or deeply relieved topographic features, with applications in reverse engineering and industrial surface inspection. Experimental results are presented in the paper.
Citation
Sun, J., Smith, M., Smith, L., Midha, S., & Bamber, J. (2007). Object surface recovery using a multi-light photometric stereo technique for non-Lambertian surfaces subject to shadows and specularities. Image and Vision Computing, 25(7), 1050-1057. https://doi.org/10.1016/j.imavis.2006.04.025
Journal Article Type | Article |
---|---|
Publication Date | Jul 1, 2007 |
Journal | Image and Vision Computing |
Print ISSN | 0262-8856 |
Publisher | Elsevier |
Peer Reviewed | Peer Reviewed |
Volume | 25 |
Issue | 7 |
Pages | 1050-1057 |
DOI | https://doi.org/10.1016/j.imavis.2006.04.025 |
Keywords | photometric stereo, specular reflection, shadows, surface reflectance, surface orientation, height map, linear least-squares solution |
Public URL | https://uwe-repository.worktribe.com/output/1027060 |
Publisher URL | http://dx.doi.org/10.1016/j.imavis.2006.04.025 |
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