17 search results - page 1 / 4 » Weakly Supervised Learning of a Classifier for Unusual Event... |
TIP
2008
13 years 4 months ago
2008
In this paper, we present an automatic classification framework combining appearance based features and Hidden Markov Models (HMM) to detect unusual events in image sequences. One...
CVPR
2005
IEEE
14 years 6 months ago
2005
IEEE
We address the problem of temporal unusual event detection. Unusual events are characterized by a number of features (rarity, unexpectedness, and relevance) that limit the applica...
ACCV
2010
Springer
13 years 22 days ago
2010
Springer
We present a new active learning approach to incorporate
human feedback for on-line unusual event detection. In contrast to most
existing unsupervised methods that perform passiv...
AVSS
2009
IEEE
13 years 11 months ago
2009
IEEE
—In this paper, we consider the challenging problem of unusual event detection in video surveillance systems. The proposed approach makes a step toward generic and automatic dete...
ICCV
2009
IEEE
14 years 9 months ago
2009
IEEE
Visual categorization problems, such as object classification or action recognition,
are increasingly often approached using a detection strategy: a classifier function
is first ...