18 search results - page 1 / 4 » Sparse Reconstruction Cost for Abnormal Event Detection |
CVPR
2011
IEEE
12 years 11 months ago
2011
IEEE
We propose to detect abnormal events via a sparse reconstruction over the normal bases. Given an over-complete normal basis set (e.g., an image sequence or a collection of local s...
CVPR
2011
IEEE
12 years 11 months ago
2011
IEEE
Real-time unusual event detection in video stream has been a difficult challenge due to the lack of sufficient training information, volatility of the definitions for both norm...
MOBIHOC
2007
ACM
14 years 3 months ago
2007
ACM
Outlier detection has many important applications in sensor networks, e.g., abnormal event detection, animal behavior change, etc. It is a difficult problem since global informati...
3DPVT
2006
IEEE
13 years 6 months ago
2006
IEEE
This paper introduces a feature based method for the fast generation of sparse 3D point clouds from multiple images with known pose. We extract sub-pixel edge elements (2D positio...
TMI
2010
13 years 2 months ago
2010
—This paper provides a framework for generating high resolution time sequences of 3D images that show the dynamics of cerebral blood flow. These sequences have the potential to ...