T. Wada, Dept. of Inf. Technol., Okayama Univ., Japan
H. Ukida, Dept. of Inf. Technol., Okayama Univ., Japan
We address the problem to recover the 3D shape of an unfolded book surface from the shading information in a scanner image. From a technical point of view, this shape from shading problem in real world environments is characterized by (1) proximal light source, (2) interreflections, (3) moving light source, (4) specular reflection, and (5) nonuniform albedo distribution. Taking all these factors into account, we first formulate the problem based on an iterative nonlinear optimization scheme. Then we introduce piecewise polynomial models of the 3D shape. Image restoration experiments for a real book surface demonstrated that geometric and photometric distortions are almost completely removed by the proposed method.
Index Terms:
image restoration; albedo; light reflection; light sources; iterative methods; optimisation; piecewise polynomial techniques; unfolded book surface; scanner image; 3D shape reconstruction; shading; interreflections; proximal light source; real world environments; moving light source; specular reflection; nonuniform albedo distribution; iterative nonlinear optimization scheme; piecewise polynomial models; image restoration experiments; geometric distortions; photometric distortions
Citation:
T. Wada, H. Ukida, T. Matsuyama, "Shape from shading with interreflections under proximal light source-3D shape reconstruction of unfolded book surface from a scanner image," iccv, pp.66, Fifth International Conference on Computer Vision (ICCV'95), 1995