摄影测量相机成像模型参数的单图标定方法  

Single image calibration method ofphotogrammetry camera imaging model

作　　者：张楚涵 王君[1] 刘其林 董明利[1] 孙鹏[1] 燕必希[1] ZHANG Chuhan;WANG Jun;LIU Qilin;DONG Mingli;SUN Peng;YAN Bixi(School of Instrument Science and Opto-Electronics Engineering,Beijing Information Science and Technology University,Beijing 100192,China;School of Opto-Electronic Engineering,Changchun University of Science and Technology,Changchun 130022,China)

机构地区：[1]北京信息科技大学仪器科学与光电工程学院,北京100192 [2]长春理工大学光电工程学院,长春130022

出　　处：《激光杂志》2023年第12期63-69,共7页Laser Journal

基　　金：教育部“长江学者与创新团队发展计划”(No.IRT_16R07);北京信息科技大学大学生科技创新计划项目(No.5112210829)。

摘　　要：为研究热控措施下温度波动引起的相机成像模型参数变化规律问题,提出了一种摄影测量相机成像模型参数的单图标定方法。摆放多张不同位置及姿态的同规格同精度标定板于相机视场内,为相机单图标定提供大量不同深度不同姿态及不同位置的已知空间点阵约束信息,在有限空间内的连续时刻分别采集单张标定场景图像,通过多站位光束平差算法实现连续时刻下相机成像模型参数的标定。实验结果表明,此标定方法的空间点像面反投影误差标准差为0.48μm,标定精度为1/15像素,可为后续变温条件下相机成像模型参数变化规律的探究提供准确的温度与相机参数相对应的数据集。In order to study the change law of camera imaging model parameters caused by temperature fluctuation under thermal control measures,a single image calibration method for photogrammetry camera parameters is proposed.Several calibration plates of the same specification and accuracy with different positions and attitudes are placed in the camera view,to provide a large number of known space lattice constraint information with different depths,different at-titudes and different positions for single image calibration.Single calibration images are collected at consecutive times in a limited space,and the camera parameters are calibrated at consecutive times through multi station beam adjust-ment algorithm.The experimental results show that the standard deviation of the back-projection error of spatial image points of this calibration method is 0.48μm,and the calibration accuracy is 1/15 pixels,which can provide an accu-rate data set corresponding to the temperature and camera parameters for the subsequent exploration of the variation law of camera parameters under variable temperature conditions.

关 键 词：摄影测量 单图标定 共线方程 畸变系数 光束平差法 

分 类 号：TN27[电子电信—物理电子学]