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CVPR
2010
IEEE
14 years 4 months ago
Tracking with Local Spatio-Temporal Motion Patterns in Extremely Crowded Scenes
Tracking individuals in extremely crowded scenes is a challenging task, primarily due to the motion and appearance variability produced by the large number of people within the sc...
Louis Kratz, Ko Nishino
JMLR
2010
144views more  JMLR 2010»
13 years 3 months ago
Practical Approaches to Principal Component Analysis in the Presence of Missing Values
Principal component analysis (PCA) is a classical data analysis technique that finds linear transformations of data that retain the maximal amount of variance. We study a case whe...
Alexander Ilin, Tapani Raiko
DEXAW
2000
IEEE
88views Database» more  DEXAW 2000»
14 years 1 months ago
Spatio-Temporal Databases: Contentions, Components and Consolidation
Spatio-temporal databases have been the focus of considerable research activity over a significant period. However, there are as of yet very few prototypes of complete systems, f...
Norman W. Paton, Alvaro A. A. Fernandes, Tony Grif...
CVPR
2008
IEEE
14 years 10 months ago
Edge preserving spatially varying mixtures for image segmentation
A new hierarchical Bayesian model is proposed for image segmentation based on Gaussian mixture models (GMM) with a prior enforcing spatial smoothness. According to this prior, the...
Giorgos Sfikas, Christophoros Nikou, Nikolas P. Ga...
WSC
2008
13 years 11 months ago
Application of spatial visualization for probabilistic hurricanes risk assessment to build environment
Hurricanes have caused extensive economic losses and social disruption in the past two decades in the United States. A key component for improving building and infrastructure prac...
Yue Li, Tyler A. Erickson