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SIAMSC
2008
113views more  SIAMSC 2008»
13 years 10 months ago
Limited Data X-Ray Tomography Using Nonlinear Evolution Equations
A novel approach to the X-ray tomography problem with sparse projection data is proposed. Non-negativity of the X-ray attenuation coefficient is enforced by modelling it as max{(x)...
Ville Kolehmainen, Matti Lassas, Samuli Siltanen
SIGIR
2008
ACM
13 years 10 months ago
Separate and inequal: preserving heterogeneity in topical authority flows
Web pages, like people, are often known by others in a variety of contexts. When those contexts are sufficiently distinct, a page's importance may be better represented by mu...
Lan Nie, Brian D. Davison
TOG
2008
145views more  TOG 2008»
13 years 10 months ago
Real-time KD-tree construction on graphics hardware
We present an algorithm for constructing kd-trees on GPUs. This algorithm achieves real-time performance by exploiting the GPU's streaming architecture at all stages of kd-tr...
Kun Zhou, Qiming Hou, Rui Wang 0004, Baining Guo
CGF
2005
84views more  CGF 2005»
13 years 10 months ago
Perceptual Evaluation of Impostor Representations for Virtual Humans and Buildings
In large-scale simulations involving complex scenes, such as cities inhabited by crowds, simplifications are almost always necessary to achieve interactive frame-rates. Level of D...
John Hamill, Rachel McDonnell, Simon Dobbyn, Carol...
JMM
2007
107views more  JMM 2007»
13 years 10 months ago
Using a Spatial Context Authentication Proxy for Establishing Secure Wireless Connections
Spontaneous interaction in wireless ad-hoc networks is often desirable not only between users or devices in direct contact, but also with devices that are accessible only via a wi...
Rene Mayrhofer, Roswitha Gostner