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ICIP
2003
IEEE
16 years 8 months ago
Optical flow estimation based on the extraction of motion patterns
In this paper, a new methodology for optical flow estimation that is able to represent multiple motions is presented. To separate motions at the same location, a new frequency-dom...
Jesús Chamorro-Martínez, Joaqu&iacut...
ICPR
2008
IEEE
16 years 8 months ago
Learning motion patterns in crowded scenes using motion flow field
Learning typical motion patterns or activities from videos of crowded scenes is an important visual surveillance problem. To detect typical motion patterns in crowded scenarios, w...
Min Hu, Mubarak Shah, Saad Ali
217
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WWW
2009
ACM
16 years 7 months ago
To join or not to join: the illusion of privacy in social networks with mixed public and private user profiles
In order to address privacy concerns, many social media websites allow users to hide their personal profiles from the public. In this work, we show how an adversary can exploit an...
Elena Zheleva, Lise Getoor
CHI
2005
ACM
16 years 7 months ago
AIS SIGHCI position paper
The upcoming ACM SIGCHI Development Consortium is aimed at meeting the needs of multidisciplinary professionals that must choose among a variety of professional associations and t...
Dennis F. Galletta, Fiona Fui-Hoon Nah, Ping Zhang...
SAC
2010
ACM
16 years 1 months ago
Fast, flexible, and highly resilient genuine fifo and causal multicast algorithms
We study the fifo and causal multicast problem, two group-communication abstractions that deliver messages in an order consistent with their context. With fifo multicast, the co...
Nicolas Schiper, Fernando Pedone