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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
piecewise polynomial techniques
Digital Object Identifier: 10.1109/ICCV.1995.466805
Published with permission from the copyright holder. This is the institute's copy, as published in Computer Vision, 1995. Proceedings., Fifth International Conference on, 20-23 June 1995, Pages 66-71.
Copyright © 1995 IEEE. All rights reserved.