143 search results - page 8 / 29 » Detecting group activities using rigidity of formation |
ICIP
2007
IEEE
15 years 11 months ago
2007
IEEE
A key goal of far-field activity analysis is to learn the usual pattern of activity in a scene and to detect statistically anomalous behavior. We propose a method for unsupervised...
91
Voted
JMM2
2007
14 years 9 months ago
2007
— This paper makes new contributions in motion detection, object segmentation and trajectory estimation to create a successful object tracking system. A new efficient motion det...
66
Voted
CASCON
2007
14 years 11 months ago
2007
As online communities proliferate, methods are needed to explore and capture patterns of activity within them. This paper focuses on the problem of identifying active subgroups wi...
ACSAC
2007
IEEE
15 years 3 months ago
2007
IEEE
We exploit for defensive purposes the concept of darkports – the unused ports on active systems. We are particularly interested in such ports which transition to become active (...
CVPR
2011
IEEE
14 years 1 months ago
2011
IEEE
We present a novel approach for automatically discovering spatio-temporal patterns in complex dynamic scenes. Similarly to recent non-object centric methods, we use low level visu...