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ISBI
2008
IEEE
16 years 3 months ago
Fast displacement probability profile approximation from HARDI using 4th-order tensors
Cartesian tensor basis have been widely used to approximate spherical functions. In Medical Imaging, tensors of various orders have been used to model the diffusivity function in ...
Angelos Barmpoutis, Baba C. Vemuri, John R. Forder
APPML
2007
92views more  APPML 2007»
15 years 2 months ago
Topological grammars for data approximation
A method of topological grammars is proposed for multidimensional data approximation. For data with complex topology we define a principal cubic complex of low dimension and give...
Alexander N. Gorban, Neil R. Sumner, Andrei Yu. Zi...
SIAMCOMP
2008
137views more  SIAMCOMP 2008»
15 years 2 months ago
Approximate Shortest Paths in Anisotropic Regions
Our goal is to find an approximate shortest path for a point robot moving in a planar subdivision with n vertices. Let 1 be a real number. Distances in each face of this subdivis...
Siu-Wing Cheng, Hyeon-Suk Na, Antoine Vigneron, Ya...
ISVC
2007
Springer
15 years 8 months ago
A New Set of Normalized Geometric Moments Based on Schlick's Approximation
Schlick’s approximation of the term xp is used primarily to reduce the complexity of specular lighting calculations in graphics applications. Since moment functions have a kernel...
Ramakrishnan Mukundan
ANOR
2010
89views more  ANOR 2010»
15 years 2 months ago
Convex approximations for a class of mixed-integer recourse models
We consider mixed-integer recourse (MIR) models with a single recourse constraint. We relate the second-stage value function of such problems to the expected simple integer recour...
Maarten H. van der Vlerk