室内三维相机检校场温度改正阈值研究  

Research on temperature correction threshold of indoor 3D camera calibration field

作　　者：景冬[1,2] 余志鹏 卢秀山 檀继猛 JING Dong;YU Zhipeng;LU Xiushan;TAN Jimeng(College of Geomatics,Shandong University of Science and Technology,Qingdao 266590,China;Key Laboratory of Surveying and Mapping Technology on Island and Reef,Ministry of Natural Resources,Qingdao 266590,China;Institute of Ocean Engineering,Shandong University of Science and Technology,Qingdao 266590,China;Jinan Geotechnical Investigation and Surveying Research Institute,Jinan 250101,China)

机构地区：[1]山东科技大学测绘科学与工程学院,山东青岛266590 [2]自然资源部海岛(礁)测绘技术重点实验室,山东青岛266590 [3]山东科技大学海洋工程研究院,山东青岛266590 [4]济南市勘察测绘研究院,山东济南250101

出　　处：《测绘工程》2020年第4期55-59,共5页Engineering of Surveying and Mapping

基　　金：国家重点研发计划(2016YFB0501705);国家基础测绘科技计划(2016KJ0101)。

摘　　要：室内三维相机检校场可以用于检校量测型相机或非量测型相机的内方位元素、光学畸变,以及多相机组合拼接参数。受温度变化影响,检校场观测标志载体发生热胀冷缩,观测标志发生相对位置变化,影响相机检校精度。通过采用经纬仪工业测量系统对检校场观测标志进行高精度测量,在不同温度条件下对检校场开展周期性观测,得出检校场标志点载体钢筋混凝土和金属挂杆的热膨胀系数,根据待检校相机的类型,计算出检校场需要达到的精度要求,确定检校场坐标温度改正阈值。The indoor 3D camera calibration field can be used to calibrate the interior orientation elements and the lens distortion of the metric camera or the non-metric camera,even the coordinate system transformation parameters of the combined cameras.Due to the effect of temperature difference,the calibration field survey marks carrier undergoes thermal expansion and contraction.the relative displacement of the survey marks will affect the camera calibration accuracy.The high-precision measurement of the camera calibration field survey marks is accomplished by using the theodolite industrial measuring system.A periodic survey project of the camera calibration field under different temperature conditions is carried out.According to the type of camera to be calibration,the accuracy requirement of the calibration field can be calculated,and the temperature correction threshold of the calibration field coordinate is determined according to the thermal expansion coefficient of the survey marks carrier of the calibration field.

关 键 词：相机检校场 工业测量系统 膨胀系数 温度改正 

分 类 号：P231.2[天文地球—摄影测量与遥感]