摘要
在交通事故现场勘测中,利用事故现场俯视摄影图,可全面、快速地记录事故现场信息。通过交通事故现场俯视摄影图像几何校正模型对俯视摄影图进行几何校正后,图像存在视场角度小,局部场景丢失的缺点。在分析几何校正坐标变换数学模型的基础上,提出了基于特征线的交通事故现场照片匹配法,实现了图像拼接;并以例证校验了方法的有效性。
In accident investigation the information can be recorded comprehensively and quickly by means of bird＇seye-photos at a certain height. There are two limitations in the image after geometry correction; one is small visual angle and the other is the loss of local scene. In order to acquire the actual coordinate of reference point quickly, a method of image registration based on characteristic line is proposed through analyzing the mathematics model of coordinate transformation for geometry correction. The image mosaic is then carried out by this method. The validity of this method is checked by exemplification. This method has demonstrated the validity of the image information processing for on-site traffic accident investigation.
出处
《交通信息与安全》
2009年第5期90-93,98,共5页
Journal of Transport Information and Safety
基金
高等学校博士学科点专项科研基金项目(批准号:200801830036)
天津市自然基金项目(批准号:07JCYBJC04700)资助
关键词
交通事故
几何校正
图像拼接
图像匹配
traffic accident
geometry correction
image mosaic
image matching
