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Efficient photometric stereo technique for three-dimensional surfaces with unknown BRDF

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3 Author(s)
Li Shen ; Graduate Sch. of Inf. Sci. & Technol., Osaka Univ., Japan ; Machida, T. ; Takemura, H.

The present paper focuses on efficient inverse rendering using a photometric stereo technique for realistic surfaces. The technique primarily assumes the Lambertian reflection model only. For non-Lambertian surfaces, application of the technique to real surfaces in order to estimate 3D shape and spatially varying reflectance from sparse images remains difficult. In the present paper, we propose a new photometric stereo technique by which to efficiently recover a full surface model, starting from a small set of photographs. The proposed technique allows diffuse albedo to vary arbitrarily over surfaces while non-diffuse characteristics remain constant for a material. Specifically, the basic approach is to first recover the specular reflectance parameters of the surfaces by a novel optimization procedure. These parameters are then used to estimate the diffuse reflectance and surface normal for each point. As a result, a lighting-independent model of the geometry and reflectance properties of the surface is established using the proposed method, which can be used to re-render the images under novel lighting via traditional rendering methods.

Published in:

3-D Digital Imaging and Modeling, 2005. 3DIM 2005. Fifth International Conference on

Date of Conference:

13-16 June 2005