平面约束单目序列影像解析方法  

Monocular sequence image analysis method based on plane constraints

作　　者：杨承昆 姚吉利[1] 王建[1] 赵猛 赵雪莹 刘科利[1] YANG Chengkun;YAO Jili;WANG Jian;ZHAO Meng;ZHAO Xueying;LIU Keli(Shandong University of Technology,Zibo,Shandong 255049,China)

机构地区：[1]山东理工大学,山东淄博255049

出　　处：《测绘科学》2020年第2期52-59,共8页Science of Surveying and Mapping

基　　金：国家自然科学青年基金项目(41701525,41601496);山东省重点研发计划项目(2018GGX106002).

摘　　要：针对目前单目监控相机参数与方位元素未知、影像解析方法适用性不强等问题,该文提出一种基于平面约束的单目像机序列影像解析方法。首先以移动三维检校场为基础建立物方坐标系,并用其检校单目监控像机;然后结合视场中的平面元素对直接线性变换(DLT)反变换方程进行约束,利用平面约束DLT反变换方程求解目标物方点位坐标;最后根据监控像机的像机参数和方位元素不变的特点,进而解析序列影像,为单目影像解析提供了新思路。该文最后以一起实际交通事故的监控影像解析为例,验证了该方法的可靠性和实用性。Aiming at the problem that there is no good solution to the problems of unknown parameters and orientation elements and the applicability of monocular surveillance camera at present,in this paper,a monocular sequence image analysis method based on plane constraints was proposed.Firstly,based on the mobile three-dimensional calibration field,the object coordinate system was established,and the camera was calibrated by the moving three-dimensional calibration field.Then the plane constrained direct linear transformation(DLT)inverse transform equation constrained by the plane elements in the field of view was used to solve the target object point coordinates.Finally,using the characteristics that the camera has stable camera parameters and orientation elements to monitor the sequence image,it provided a new idea for monocular image analysis.At the end of this paper,the reliability and practicability of the method was verified by an example of the monitoring image analysis of actual traffic accidents.

关 键 词：摄影测量 DLT反变换 平面约束 电子监控 影像解析 

分 类 号：P232[天文地球—摄影测量与遥感]