The invention discloses a zebra crossing pedestrian-vehicle collision early warning method and system, and the method comprises the steps: (1) determining whether there is a pedestrian crossing the street at the opposite side of a sidewalk and whether the visual field of a rear vehicle is shielded by a front vehicle or other things through image recognition, and executing a step (2) if the conditions are satisfied at the same time; (2) determining a distance S between a person and a vehicle through a monocular distance measurement algorithm; (3) establishing a human-vehicle minimum safety distance model, determining a longitudinal safety distance Dx, and when the longitudinal component of the human-vehicle distance S is smaller than or equal to the longitudinal safety distance Dx, executing the step (4); (4) establishing a risk assessment model, judging the probability of'human-vehicle collision ', and if the probability is greater than or equal to a threshold value P, executing the step (5); (5) early warning is conducted through the two unmanned aerial vehicles, one unmanned aerial vehicle is arranged above the sidewalk to remind pedestrians, and the other unmanned aerial vehicle is arranged on one side of the road to remind drivers. According to the invention, early warning can be carried out in time, and traffic accidents of human-vehicle collision are reduced.
本发明公开了一种斑马线人车碰撞预警方法及系统,所述预警方法包括:(1)通过图像识别,确定人行道对侧是否有过街行人以及后车视野是否受前车或其他事物遮挡,若同时满足,则执行步骤(2);(2)通过单目测距算法,确定人车之间的距离S;(3)建立人‑车最小安全距离模型,确定纵向安全距离Dx,当人车距离S的纵向分量小于等于纵向安全距离Dx时,执行步骤(4);(4)建立风险评估模型,判定发生“人车碰撞”的概率,若大于等于阈值P,则执行步骤(5);(5)通过两架无人机进行预警,一架配置于人行道上方以提醒行人,另一架配置于道路一侧以提醒驾驶员。本发明能够及时预警,减少“人车碰撞”交通事故发生。
Zebra crossing pedestrian-vehicle collision early warning method and system
一种斑马线人车碰撞预警方法及系统
2024-11-12
Patent
Electronic Resource
Chinese
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