Abstract
This paper presents the design and real-time implementation
of a fall-detection system, aiming at detecting fall incidents in unobserved
home situations. The setup employs two fixed, uncalibrated, perpendicular
cameras. The foreground region is extracted from both cameras and
for each object, principal component analysis is employed to determine
the direction of the main axis of the body and the ratio of the variances
in x and y direction. A Gaussian multi-frame classifier helps to recognize
fall events using the above two features. The robustness of the system is
increased by a head-tracking module, that can reject false positives. We
evaluate both performance and efficiency of the system for a variety of
scenes: unoccluded situations, cases where the person carries objects and
occluded situations. Experiments show that our algorithm can operate
at real-time speed with more than 85% fall-detection rate.
Original language | English |
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Title of host publication | Advanced concepts for intelligent vision systems : 10th international conference, ACIVS 2008, Juan-les-Pins, France, October 20-24, 2008 ; proceedings |
Editors | Jacques Blanc-Talon, Salah Bourennane, Wilfried Philips |
Place of Publication | Berlin |
Publisher | Springer |
Pages | 298-390 |
ISBN (Print) | 978-3-540-88457-6 |
DOIs | |
Publication status | Published - 2008 |