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3DPVT
2004
IEEE

Helmholtz Stereopsis on Rough and Strongly Textured Surfaces

9 years 10 months ago
Helmholtz Stereopsis on Rough and Strongly Textured Surfaces
Helmholtz Stereopsis (HS) has recently been explored as a promising technique for capturing shape of objects with unknown reflectance. So far, it has been widely applied to objects of smooth geometry and piecewise uniform Bidirectional Reflectance Distribution Function (BRDF). Moreover, for non-convex surfaces the inter-reflection effects have been completely neglected. We extend the method to surfaces which exhibit strong texture, nontrivial geometry and are possibly non-convex. The problem associated with these surface features is that Helmholtz reciprocity is apparently violated when point-based measurements are used independently to establish the matching constraint as in the standard HS implementation. We argue that the problem is avoided by computing radiance measurements on image regions corresponding exactly to projections of the same surface point neighbourhood with appropriate scale. The experimental results demonstrate the success of the novel method proposed on real object...
Jean-Yves Guillemaut, Ondrej Drbohlav, Radim S&aac
Added 20 Aug 2010
Updated 20 Aug 2010
Type Conference
Year 2004
Where 3DPVT
Authors Jean-Yves Guillemaut, Ondrej Drbohlav, Radim Sára, John Illingworth
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