基于数学形态学的信号控制交叉口处车辆队尾的实时跟踪

为实时动态跟踪信号控制交叉口处车辆队列的队尾,采用膨胀和腐蚀2种数学形态学操作检测车辆边缘,使用宽度变化代替宽度固定的伸缩窗来根据车辆队尾的变化进行窗口的伸与缩,从而实现车辆队尾的实时跟踪。采用＂回检＂技术来解决车辆队列中可能存在的＂空洞＂。实地测试表明：改进的伸缩窗方法能准确实时跟踪车辆队尾。

Real-time Tracking of the Tail of Vehicle Queue at Signalized Intersection Based on Mathematical Morphology

The dilation and erosion,which are introduced from mathematical morphology,are used to detect vehicle edges in order to track the tail of vehicle queue.The variable width telescopic window is used instead of fixed width telescopic window.The variable width telescopic window can extend and shorten according to the change of vehicle queue.Then,the tail of vehicle queue can be tracked in real time.The ＂back detection＂ is used to solve the cavity that may be in the vehicle queue.The field tests show that the improved telescopic window can track the tail of vehicle queue.