Open Access

An algorithm to identify avoidance behavior in moving object trajectories

  • Luis Otavio Alvares1, 2Email author,
  • Alisson Moscato Loy2,
  • Chiara Renso3 and
  • Vania Bogorny1
Journal of the Brazilian Computer Society201117:37

Received: 3 March 2011

Accepted: 16 July 2011

Published: 30 August 2011


Research on trajectory behavior has increased significantly in the last few years. The focus has been on the search for patterns considering the movement of the moving object in space and time, essentially looking for similar geometric properties and dense regions. This paper proposes an algorithm to detect a new kind of behavior pattern that identifies when a moving object is avoiding specific spatial regions, such as security cameras. This behavior pattern is called avoidance. The algorithm was evaluated with real trajectory data and achieved very good results.


Trajectory behavior Spatiotemporal pattern Moving objects Trajectory data mining Avoidance behavior