Calibrating Photometric Stereo by Holistic Reflectance Symmetry Analysis

CVPR 2013 Zhe WuPing Tan

Under unknown directional lighting, the uncalibrated Lambertian photometric stereo algorithm recovers the shape of a smooth surface up to the generalized bas-relief (GBR) ambiguity. We resolve this ambiguity from the halfvector symmetry, which is observed in many isotropic materials... (read more)

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