15 search results - page 1 / 3 » Hidden Markov Models for Optical Flow Analysis in Crowds |
ICPR
2006
IEEE
14 years 5 months ago
2006
IEEE
This paper presents an event detector for emergencies in crowds. Assuming a single camera and a dense crowd we rely on optical flow instead of tracking statistics as a feature to ...
CVPR
2011
IEEE
12 years 12 months ago
2011
IEEE
In this paper, a Random Field Topic (RFT) model is proposed for semantic region analysis from motions of objects in crowded scenes. Different from existing approaches of learning ...
ICCV
2005
IEEE
13 years 10 months ago
2005
IEEE
We develop a method for learning the spatial statistics of optical flow fields from a novel training database. Training flow fields are constructed using range images of natur...
TITS
2008
13 years 4 months ago
2008
This paper presents two different types of visual activity analysis modules based on vehicle tracking. The highway monitoring module accurately classifies vehicles into eight diffe...
ICIP
2009
IEEE
14 years 5 months ago
2009
IEEE
We propose a robust approach for aligning lecture slides with lecture videos using a combination of Hough transform, optical flow and Gabor analysis. A Markov Decision Process mod...