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TOG
2010
118views more  TOG 2010»
15 years 22 days ago
A hierarchical volumetric shadow algorithm for single scattering
Volumetric effects such as beams of light through participating media are an important component in the appearance of the natural world. Many such effects can be faithfully modele...
Ilya Baran, Jiawen Chen, Jonathan Ragan-Kelley, Fr...
TROB
2010
120views more  TROB 2010»
15 years 21 days ago
2-D Ultrasound Probe Complete Guidance by Visual Servoing Using Image Moments
This paper presents a visual-servoing method that is based on 2-D ultrasound (US) images. The main goal is to guide a robot actuating a 2-D US probe in order to reach a desired cro...
Rafik Mebarki, Alexandre Krupa, François Ch...
TSP
2010
15 years 21 days ago
On the optimal performance in asymmetric gaussian wireless sensor networks with fading
We study the estimation of a Gaussian source by a Gaussian wireless sensor network (WSN) where L distributed sensors transmit noisy observations of the source through a fading Gau...
Hamid Behroozi, Fady Alajaji, Tamás Linder
TSP
2010
15 years 21 days ago
Reduced feedback schemes using random beamforming in MIMO broadcast channels
A random beamforming scheme for the Gaussian MIMO broadcast channel with channel quality feedback is investigated and extended. Considering the case where the receivers each have r...
Matthew Pugh, Bhaskar D. Rao
ICONFERENCE
2011
15 years 12 days ago
Beyond promotion and protection: creators, audiences and common ground in user-generated media
In this paper, we present findings from a qualitative study of producers in a specific creative domain—online digital photography. We used social psychology and linguistic conce...
Eric C. Cook, Stephanie D. Teasley