Abstract
Parallel rays of light coming from the same direction is the basic assumption for the lighting condition of the conventional shape from shading(SFS) methods. This is at best approximately true in controlled environments. To eliminate this limitation, we propose a spherical light model and a cylindrical light model to model practical light sources in common indoor environments. Each of these lights can be used in a SFS technique or a photometric stereo technique for shape recovery of objects with Lambertian surface. The validity of this method is verified by many examples of simulation and real experiments. Good results had been obtained in those experiments with little inter-reflection. This paper forms an important step towards SFS under ordinary indoor lighting environments.
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© 1997 Springer-Verlag Berlin Heidelberg
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Tian, Yl., Tsui, H.T., Yeung, S.Y. (1997). Spherical and cylindrical light source models for shape recovery. In: Chin, R., Pong, TC. (eds) Computer Vision — ACCV'98. ACCV 1998. Lecture Notes in Computer Science, vol 1351. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-63930-6_125
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DOI: https://doi.org/10.1007/3-540-63930-6_125
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