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ADT
2008
15 years 6 months ago
Analytical investigation of intersection based range-free localization
By range-free localization, the positions of a mobile device can be limited to the coverage area of a radio access network cell. The drawback of such approach is the coarseness of ...
Michel Sortais, Sven D. Hermann, Adam Wolisz
CGF
2010
148views more  CGF 2010»
15 years 6 months ago
Two Methods for Fast Ray-Cast Ambient Occlusion
Ambient occlusion has proven to be a useful tool for producing realistic images, both in offline rendering and interactive applications. In production rendering, ambient occlusion...
Samuli Laine, Tero Karras
CORR
2010
Springer
109views Education» more  CORR 2010»
15 years 6 months ago
Fast space-variant elliptical filtering using box splines
The efficient realization of linear space-variant (non-convolution) filters is a challenging computational problem in image processing. In this paper, we demonstrate that it is po...
Kunal Narayan Chaudhury, Arrate Muñoz-Barru...
CORR
2008
Springer
92views Education» more  CORR 2008»
15 years 6 months ago
Nonnegative Matrix Factorization via Rank-One Downdate
Nonnegative matrix factorization (NMF) was popularized as a tool for data mining by Lee and Seung in 1999. NMF attempts to approximate a matrix with nonnegative entries by a produ...
Michael Biggs, Ali Ghodsi, Stephen A. Vavasis
CAD
2006
Springer
15 years 6 months ago
Incremental reconstruction of sharp edges on mesh surfaces
Limited by the regular grids in computing, many modelling approaches (e.g., field-based methods) sample 3D shape insensitive to sharp features therefore exhibit aliasing errors, b...
Charlie C. L. Wang