A Method for Wandering Trajectory Detection in Video Monitor

摘要

For video monitor system, wandering trajectory detection of moving targets is one of key problems needed to be solved, as it is an effective method to discover wandering behavior and prevent the potential harmful behavior. In view of the weakness of the existing algorithms, a method for wandering trajectory detection based on angle is proposed in this paper. In this method, wandering trajectory curves are divided into three kinds, which are closed curve, spiral curve and S curve. The occurring of wandering can be analyzed and judged through the angle of trajectory changing. The experimental results demonstrate that the method can detect the wandering trajectory accurately in video sequences, without any training samples. So, the method can improve the real-time performance of the monitor system.