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» Photometric Stereo with General, Unknown Lighting
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CVPR
2007
IEEE
15 years 11 months ago
Resolving the Generalized Bas-Relief Ambiguity by Entropy Minimization
It is well known in the photometric stereo literature that uncalibrated photometric stereo, where light source strength and direction are unknown, can recover the surface geometry...
Neil G. Alldrin, Satya P. Mallick, David J. Kriegm...
ICCV
2005
IEEE
15 years 11 months ago
Can Two Specular Pixels Calibrate Photometric Stereo?
Lambertian photometric stereo with unknown light source parameters is ambiguous. Provided that the object imaged constitutes a surface, the ambiguity is represented by the group o...
Ondrej Drbohlav, Mike J. Chantler
CVPR
2012
IEEE
12 years 12 months ago
Photometric stereo for outdoor webcams
We present a photometric stereo technique that operates on time-lapse sequences captured by static outdoor webcams over the course of several months. Outdoor webcams produce a lar...
Jens Ackermann, Fabian Langguth, Simon Fuhrmann, M...
CRV
2006
IEEE
69views Robotics» more  CRV 2006»
15 years 3 months ago
Photometric Stereo with Nearby Planar Distributed Illuminants
This paper considers the problem of shape-from-shading using nearby planar distributed illuminants. It is shown that a rectangular planar nearby distributed uniform isotropic illu...
James J. Clark
ECCV
2010
Springer
15 years 24 days ago
Ring-Light Photometric Stereo
We propose a novel algorithm for uncalibrated photometric stereo. While most of previous methods rely on various assumptions on scene properties, we exploit constraints in lighting...