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SI3D
2010
ACM
14 years 1 months ago
Epipolar sampling for shadows and crepuscular rays in participating media with single scattering
Scattering in participating media, such as fog or haze, generates volumetric lighting effects known as crepuscular or god rays. Rendering such effects greatly enhances the realism...
Thomas Engelhardt, Carsten Dachsbacher
ISBI
2002
IEEE
14 years 8 months ago
Correction for external LOR effects in listmode reconstruction for PET
In PET imaging listmode is an alternative for projections to store the acquisition data with more accuracy. The reconstruction starting from the listmode format requires different...
Stefaan Vandenberghe, Yves D'Asseler, Rik Van de W...
SIGMETRICS
2008
ACM
181views Hardware» more  SIGMETRICS 2008»
13 years 7 months ago
Counter braids: a novel counter architecture for per-flow measurement
Fine-grained network measurement requires routers and switches to update large arrays of counters at very high link speed (e.g. 40 Gbps). A naive algorithm needs an infeasible amo...
Yi Lu, Andrea Montanari, Balaji Prabhakar, Sarang ...
SPIEVIP
2008
13 years 10 months ago
Adaptive methods of two-scale edge detection in post-enhancement visual pattern processing
Adaptive methods are defined and experimentally studied for a two-scale edge detection process that mimics human visual perception of edges and is inspired by the parvo-cellular (...
Zia-ur Rahman, Daniel J. Jobson, Glenn A. Woodell
ICASSP
2008
IEEE
14 years 2 months ago
Query adaptative locality sensitive hashing
It is well known that high-dimensional nearest-neighbor retrieval is very expensive. Many signal processing methods suffer from this computing cost. Dramatic performance gains can...
Herve Jegou, Laurent Amsaleg, Cordelia Schmid, Pat...