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167
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PAMI
2011
14 years 11 months ago
Overcoming Shadows in 3-Source Photometric Stereo
—Light occlusions are one of the most significant difficulties of photometric stereo methods. When three or more images are available without occlusion, the local surface orien...
Carlos Hernández, George Vogiatzis, Roberto...
CVPR
2009
IEEE
16 years 11 months ago
Physics-based Edge Evaluation for Improved Color Constancy
Edge-based color constancy makes use of image derivatives to estimate the illuminant. However, different edge types exist in real-world images such as shadow, geometry, material...
Arjan Gijsenij (University of Amsterdam), Theo Gev...
SMA
2005
ACM
167views Solid Modeling» more  SMA 2005»
15 years 9 months ago
Boolean operations on 3D selective Nef complexes: optimized implementation and experiments
Nef polyhedra in d-dimensional space are the closure of half-spaces under boolean set operation. In consequence, they can represent non-manifold situations, open and closed sets, ...
Peter Hachenberger, Lutz Kettner
130
Voted
SIGGRAPH
1991
ACM
15 years 7 months ago
Visibility preprocessing for interactive walkthroughs
The number of polygons comprising interesting architectural models is many more than can be rendered at interactive frame rates. However, due to occlusion by opaque surfaces (e.g....
Seth J. Teller, Carlo H. Séquin
164
Voted
CEC
2011
IEEE
14 years 4 months ago
Stochastic Natural Gradient Descent by estimation of empirical covariances
—Stochastic relaxation aims at finding the minimum of a fitness function by identifying a proper sequence of distributions, in a given model, that minimize the expected value o...
Luigi Malagò, Matteo Matteucci, Giovanni Pi...