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CVPR
2007
IEEE
15 years 12 months ago
Using Geometry Invariants for Camera Response Function Estimation
In this paper, we present a new single-image camera response function (CRF) estimation method using geometry invariants (GI). We derive mathematical properties and geometric inter...
Tian-Tsong Ng, Shih-Fu Chang, Mao-Pei Tsui
ICDAR
2007
IEEE
15 years 4 months ago
A Sparse and Locally Shift Invariant Feature Extractor Applied to Document Images
We describe an unsupervised learning algorithm for extracting sparse and locally shift-invariant features. We also devise a principled procedure for learning hierarchies of invari...
Marc'Aurelio Ranzato, Yann LeCun
CDC
2008
IEEE
105views Control Systems» more  CDC 2008»
15 years 4 months ago
Stabilization of closed sets for passive systems, part II: Passivity-based control
— In this paper we explore the stabilization of closed invariant sets for passive systems, and present conditions under which a passivity-based feedback makes the set stable, sem...
Mohamed I. El-Hawwary, Manfredi Maggiore
HYBRID
2000
Springer
15 years 1 months ago
Dynamical Systems Revisited: Hybrid Systems with Zeno Executions
Results from classical dynamical systems are generalized to hybrid dynamical systems. The concept of limit set is introduced for hybrid systems and is used to prove new results on...
Jun Zhang, Karl Henrik Johansson, John Lygeros, Sh...
MDM
2010
Springer
301views Communications» more  MDM 2010»
15 years 2 months ago
Query m-Invariance: Preventing Query Disclosures in Continuous Location-Based Services
Abstract—Location obfuscation using cloaking regions preserves location anonymity by hiding the true user among a set of other equally likely users. Furthermore, a cloaking regio...
Rinku Dewri, Indrakshi Ray, Indrajit Ray, Darrell ...