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ICIP
2003
IEEE
14 years 9 months ago
Jumping snakes and parametric model for lip segmentation
Lip segmentation is an essential stage in many multimedia systems such as videoconferencing, lip reading, or low bit rate coding communication systems. In this paper, we propose a...
Nicolas Eveno, Alice Caplier, Pierre-Yves Coulon
ICIP
2002
IEEE
14 years 9 months ago
On the security of an image encryption method
The security of digital images attracts much attention recently, and many different image encryption methods have been proposed. In 1999, J.-C. Yen and J.-I. Guo proposed a novel ...
Shujun Li, Xuan Zheng
ISBI
2002
IEEE
14 years 8 months ago
Optimal nonlinear estimation of photon coordinates in PET
We consider detection of high-energy photons in PET using thick scintillation crystals. Parallax effect and multiple Compton interactions in this type of crystals significantly re...
Alexander M. Bronstein, Michael M. Bronstein, Mich...
STOC
2003
ACM
140views Algorithms» more  STOC 2003»
14 years 8 months ago
Approximation schemes for clustering problems
We present a general approach for designing approximation algorithms for a fundamental class of geometric clustering problems in arbitrary dimensions. More specifically, our appro...
Wenceslas Fernandez de la Vega, Marek Karpinski, C...
NOMS
2008
IEEE
105views Communications» more  NOMS 2008»
14 years 2 months ago
Improving QoS guarantees through implicit AC
—In multiservice networks, admission control (AC) is a convenient means of assuring high quality communications by safeguarding enough availability for customer traffic. This ca...
Solange Rito Lima, Pedro Sousa, Paulo Carvalho