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Coplanar light sweep-surface supported uncalibrated photometric stereo

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4 Author(s)
Hui Kong ; Nanyang Technol. Univ., Singapore ; Eam-Khwang Teoh ; Jian-Gang Wang ; Venkateswarlu, R.

In lambertian uncalibrated photometric stereo (VPS), the object surface albedo and normals, the lighting directions and intensities are determined up to an arbitrary invertible matrix. In this paper, a novel method is proposed to reduce such an ambiguity. With the support of a coplanar light sweep-surface (CLSS), some key normals are determined relative to a fiducial normal which is estimated by the CLSS. Thus the arbitrary transformation is reduced to invertible matrix up to a rotation and a scale. The rotation can be solved by controlling the direction of camera, the resulting ambiguity transformation can be finally determined up to a global scale.

Published in:

Pattern Recognition, 2004. ICPR 2004. Proceedings of the 17th International Conference on  (Volume:4 )

Date of Conference:

23-26 Aug. 2004

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