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JACM
1998
88views more  JACM 1998»
15 years 6 months ago
A Threshold of ln n for Approximating Set Cover
Given a collection Ᏺ of subsets of S ϭ {1, . . . , n}, set cover is the problem of selecting as few as possible subsets from Ᏺ such that their union covers S, and max k-cover ...
Uriel Feige
CVPR
2007
IEEE
16 years 8 months ago
Efficiently Determining Silhouette Consistency
Volume intersection is a frequently used technique to solve the Shape-From-Silhouette problem, which constructs a 3D object estimate from a set of silhouettes taken with calibrate...
Li Yi, David W. Jacobs
ICIP
2009
IEEE
16 years 4 months ago
On the Use of Color Appearance Modeling for Efficient Compressed-Domain Image Enhancement
In this paper we propose a compressed-domain image enhancement algorithm based on color appearance modeling. We aim at providing an efficient high-quality JPEG color image enhancem...
Maria Chatzigiorgaki, Athanassios N. Skodras
IMECS
2007
15 years 8 months ago
Metamodel-Assisted Global Search Using a Probing Technique
—This paper presents a new metamodel-assisted metaheuristic algorithm for optimisation problems involving computationally expensive simulations. The algorithm, called Global Prob...
Anna Persson, Henrik Grimm, Amos Ng
WCNC
2008
IEEE
16 years 29 days ago
Distributed Energy Efficient Spectrum Access in Wireless Cognitive Radio Sensor Networks
—In this paper, a wireless cognitive radio sensor network is considered, where each sensor node is equipped with cognitive radio and the network is a multi-carrier system operati...
Song Gao, Lijun Qian, Dhadesugoor R. Vaman