基于视频信息的城市路段交通安全状态评估方法研究

城市道路交通安全状态实时评估是智能交系统的重要研究内容。针对现有交通安全状态实时评估方法的评估效果不理想的问题，建立了基于视频信息的城市路段交通安全状态评估方法。首先，分析了基于视频信息的交通流参数快速检测方法；然后，从车速离散度的角度提出了影响城市路段交通安全状态的路段车速离散度的概念；最后，建立了基于路段车速离散度的城市路段交通安全状态评估方法。实验表明，所提方法能够实时合理地对城市道路的安全状态水平进行评估，评估结果可以为交通管理部门制定有效的城市路段交通安全改进方案提供相应的依据。

Safety state evaluation method of urban road traffic based on video information

The real-time safety state evaluation of urban road traffic is an important research content of intelligent transportation system (ITS) . Focusing on the problem that the evaluation results of the existing traffic safety state real-time evaluation methods are unsatisfactory, this paper proposed a safety state evaluation method of urban road traffic based on video information. Firstly, this paper analyzed the rapid detection method of traffic flow parameters based on video information. Then, it proposed the concept of velocity dispersion of urban road from the point of view of vehicle speed dispersion. Finally, it established a safety state evaluation method of urban road traffic based on road velocity dispersion. The experimental results show that the proposed method can evaluate the safety state level of urban road traffic in real time and in a reasonable way, . And the evaluation result can provide the corresponding basis for the traffic management department to develop effective urban road traffic safety improvement program.