道路交通事故现场摄影测量中标定点坐标提取的研究  

Research into Getting the Coordinate of Calibration Points in Photogrammetry in Traffic AccidentScene

作　　者：许世燕[1] 张会云[1] 

机构地区：[1]长安大学,西安710064

出　　处：《交通与计算机》2004年第3期41-43,共3页Computer and Communications

摘　　要：为适应大流量、高速道路交通事故现场的勘察需要 ,数字摄影测量与现代图像处理技术相结合 ,已成为交通现场间接测量的有效手段。在道路交通事故现场摄影测量的研究中 ,获取标定点像点的准确图像坐标 ,是求解标定点世界坐标的关键。文章将边缘检测、中值滤波以及型心坐标提取等 3种方法相结合 ,提出了标定点坐标提取的具体方案 ,提高了测量精度。Digital photogrammetry and image processing have become the effective way for indirect measurement in the traffic accident scene. It can meet the needs of large flow and high speed on the road. It is critical to get the world coordinate of calibration points in the research of photogrammetry. In this article we give the scheme in which we use the edge detection, median filter and Hough transform. We can get the accurate coordinate of the calibration points though the scheme.

关 键 词：道路交通事故 现场摄影测量 标定点坐标 提取方法 边缘检测 中值滤波 型心坐标 

分 类 号：U491.3[交通运输工程—交通运输规划与管理]