Lab Meeting July 24th, 2007(Kuo-Hwei Lin):Crowd detection in video sequences

Author: Pini Reisman, Ofer Mano, Shai Avidan, and Amnon Shashua

From: IEEE Intelligent Vehicles Symposium (IV2004), June 2004, Parma, Italy.

Abstract:
We present a real-time system that detects moving
crowd in a video sequence. Crowd detection differs from
pedestrian detection in that we assume that no individual
pedestrian can be properly segmented in the image. We propose
a scheme that looks at the motion patterns of crowd in the
spatio-temporal domain and give an efficient implementation
that can detect crowd in real-time. In our experiments we
detected crowd at distances of up to 70m.