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TIT
2010
96views Education» more  TIT 2010»
15 years 1 months ago
Beyond Nyquist: efficient sampling of sparse bandlimited signals
Wideband analog signals push contemporary analog-to-digital conversion systems to their performance limits. In many applications, however, sampling at the Nyquist rate is inefficie...
Joel A. Tropp, Jason N. Laska, Marco F. Duarte, Ju...
SIAMSC
2011
148views more  SIAMSC 2011»
15 years 1 months ago
Bootstrap AMG
We develop an algebraic multigrid (AMG) setup scheme based on the bootstrap framework for multiscale scientific computation. Our approach uses a weighted least squares definition...
Achi Brandt, James J. Brannick, K. Kahl, Irene Liv...
VR
2011
IEEE
193views Virtual Reality» more  VR 2011»
14 years 10 months ago
Recognition-driven 3D navigation in large-scale virtual environments
We present a recognition-driven navigation system for large-scale 3D virtual environments. The proposed system contains three parts, virtual environment reconstruction, feature da...
Wei Guan, Suya You, Ulrich Neumann
FGR
2011
IEEE
340views Biometrics» more  FGR 2011»
14 years 10 months ago
Action unit detection using sparse appearance descriptors in space-time video volumes
— Recently developed appearance descriptors offer the opportunity for efficient and robust facial expression recognition. In this paper we investigate the merits of the family o...
Bihan Jiang, Michel François Valstar, Maja ...
ECSA
2011
Springer
14 years 6 months ago
Architecture-Based Run-Time Fault Diagnosis
Abstract. An important step in achieving robustness to run-time faults is the ability to detect and repair problems when they arise in a running system. Effective fault detection a...
Paulo Casanova, Bradley R. Schmerl, David Garlan, ...