动态空间占有率及其测量方法  

Dynamic Space Occupancy and Measuring Method

作　　者：杨建国[1] 张建华[1] 尹旭全[1] 王兆安[1] 

机构地区：[1]西安交通大学电气工程学院,陕西西安710049

出　　处：《同济大学学报（自然科学版）》2005年第11期1474-1478,共5页Journal of Tongji University:Natural Science

基　　金：国家自然科学基金资助项目(50522204)

摘　　要：提出了一个新的参量———动态空间占有率,它不仅考虑了车辆实际投影区域对道路的实占有,还考虑了车辆对道路的虚占有,即前方不能被其他交通参与者占有的区域.从定义上看,这个新量与道路利用率的约定概念更加吻合,而且克服了传统参量的局限性,保证了与现实概念的一致.利用视频检测和图像处理技术,给出了该量的测量方法.实地测量和分析表明,其测量方法是可行的.A new parameter named dynamic space occupancy is introduced. In addition to the consideration of the region actually occupied by vehicles, it also considers vehicles＇ virtual occupancy. Here virtual occupancy is defined as the region in front of vehicles and cannot be used by other traffic participants. The new parameter is more consistent with the notion of road utilization rate, and it overcomes the limitations of the traditional parameters. And the measuring method based on video and image proceasing is presented. The method is proved to be feasible through field measurement and analysis.

关 键 词：道路利用率 空间占有率 动态空间占有率 

分 类 号：U491.26[交通运输工程—交通运输规划与管理]