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ICIP
2005
IEEE
14 years 8 months ago
Camera calibration with spheres: linear approaches
This paper addresses the problem of camera calibration from spheres. By studying the relationship between the dual images of spheres and that of the absolute conic, a linear solut...
Hui Zhang, Guoqiang Zhang, Kwan-Yee Kenneth Wong
ISBI
2006
IEEE
14 years 7 months ago
Heat kernel smoothing on unit sphere
In brain imaging, cortical data such as the cortical thickness, cortical surface curvatures and surface coordinates have been mapped to a unit sphere for the purpose of visualizat...
Moo K. Chung
SIAMCO
2010
119views more  SIAMCO 2010»
13 years 1 months ago
On the Structure of the Minimum Time Function
A minimum time problem with a nonlinear smooth dynamics and a target satisfying an internal sphere condition is considered. Under the assumption that the minimum time T be continu...
Giovanni Colombo, Khai T. Nguyen
CVPR
2004
IEEE
14 years 9 months ago
Difference Sphere: An Approach to Near Light Source Estimation
We present a novel approach for estimating light sources from a single image of a scene that is illuminated by major near point light sources, a few directional light sources and ...
Takeshi Takai, Koichiro Niinuma, Atsuto Maki, Taka...
STOC
2009
ACM
119views Algorithms» more  STOC 2009»
14 years 7 months ago
Explicit construction of a small epsilon-net for linear threshold functions
We give explicit constructions of epsilon nets for linear threshold functions on the binary cube and on the unit sphere. The size of the constructed nets is polynomial in the dime...
Yuval Rabani, Amir Shpilka