593 search results - page 7 / 119 » Unsupervised Learning of Invariant Features Using Video |
CVPR
2007
IEEE
14 years 9 months ago
2007
IEEE
We propose a novel unsupervised learning framework for activity perception. To understand activities in complicated scenes from visual data, we propose a hierarchical Bayesian mod...
CVPR
2004
IEEE
14 years 9 months ago
2004
IEEE
We describe a method for obtaining the principal objects, characters and scenes in a video by measuring the reoccurrence of spatial configurations of viewpoint invariant features....
ECCV
2004
Springer
13 years 11 months ago
2004
Springer
Many techniques have been proposed for segmenting feature point trajectories tracked through a video sequence into independent motions. It has been found, however, that methods tha...
AVSS
2003
IEEE
14 years 27 days ago
2003
IEEE
Using cameras for detecting hazardous or suspicious events has spurred new research for security concerns. To make such detection reliable, researchers must overcome difficulties...
ICDAR
2003
IEEE
14 years 26 days ago
2003
IEEE
In this paper a methodology for feature selection in unsupervised learning is proposed. It makes use of a multiobjective genetic algorithm where the minimization of the number of ...