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» Discrete optimization in computer vision
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TCS
2008
13 years 9 months ago
Finding a minimum medial axis of a discrete shape is NP-hard
The medial axis is a classical representation of digital objects widely used in many applications. However, such a set of balls may not be optimal: subsets of the medial axis may ...
David Coeurjolly, Jérôme Hulin, Isabe...
SIAMJO
2008
93views more  SIAMJO 2008»
13 years 9 months ago
Recursive Trust-Region Methods for Multiscale Nonlinear Optimization
A class of trust-region methods is presented for solving unconstrained nonlinear and possibly nonconvex discretized optimization problems, like those arising in systems governed by...
Serge Gratton, Annick Sartenaer, Philippe L. Toint
CPAIOR
2005
Springer
14 years 3 months ago
Mixed Discrete and Continuous Algorithms for Scheduling Airborne Astronomy Observations
We describe the problem of scheduling astronomy observations for the Stratospheric Observatory for Infrared Astronomy, an airborne telescope. The problem requires maximizing the nu...
Jeremy Frank, Elif Kürklü
ASAP
2009
IEEE
142views Hardware» more  ASAP 2009»
14 years 7 months ago
Parallel Discrete Event Simulation of Molecular Dynamics Through Event-Based Decomposition
—Molecular dynamics simulation based on discrete event simulation (DMD) is emerging as an alternative to time-step driven molecular dynamics (MD). DMD uses simplified discretize...
Martin C. Herbordt, Md. Ashfaquzzaman Khan, Tony D...
ESTIMEDIA
2004
Springer
14 years 1 months ago
Adaptive spectrum-based variable bit truncation of discrete cosine transform (DCT) for energy-efficient wireless multimedia comm
This paper presents a new adaptive scheme to reduce the computation energy of the discrete cosine transform (DCT) architecture for image/video coding. The scheme employs the noise ...
Feng Liu, Chi-Ying Tsui