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SIAMSC
2008
113views more  SIAMSC 2008»
14 years 9 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
14 years 9 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»
14 years 9 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»
14 years 9 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»
14 years 9 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