摘要
通过摄影测量的方法为交通事故虚拟再现提供初始输入数据.基于直接线性变换方法建立摄影测量的数学模型,最小二乘方法进行模型的求解.应用二维模型提取交通事故的刹车印迹特征,结合自制的标定系统及三维模型提取交通事故的车身变形特征.通过两起交通事故案例,验证该方法的有效性.结果表明,采用摄影测量方法提取交通事故几何数据作为事故再现的初始输入,可以准确地推算碰撞接触时刻的车速及车辆初始接触位置.
Photogrammetry method was adopted to provide the initial input data for traffic accident reconstruction. The 2D and 3D direct linear transformation （DLT） math. model with their computing process through the least squares method was introduced. The tire marks were measured based on 2D math model, while the vehicle deformation was extracted based on 3D math model and active-control system. The validity of photogrammetry for surveying traffic accident scene and vehicle deformation was tested by two cases. It is proved that adopting the geometry feature offered by photogrammetry in traffic accident as initial input data can exactly deduced the velocity and the state of the vehicles at the moment of contacting.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2008年第6期861-864,共4页
Journal of Shanghai Jiaotong University
基金
国家高技术研究发展计划(863)项目(2007AA11Z234)
国家自然科学基金(50705058)
教育部博士点基金(20070248113)项目
关键词
交通事故再现
摄影测量
车辆变形
直接线性变换
traffic accident reconstruction
photogrammetry
vehicle deformation
direct linear transformatin
