基于精密二轴转台的大尺寸测量相机高效灵活标定方法（英文）  

An Efficient and Flexible Camera Calibration Technique for Large-Scale Vision Measurement Based on Precise Two-Axis Rotary Table

作　　者：高扬[1] 林嘉睿[1] 陈家琪 徐秋宇 Gao Yang;Lin Jiarui;Chen Jiaqi;Xu Qiuyu(State Key Laboratory of Precision Measuring Technology and Instruments （Tianjin University） , Tianjin 300072, Chin)

机构地区：[1]精密测试技术及仪器国家重点实验室(天津大学),天津300072

出　　处：《纳米技术与精密工程》2018年第1期59-65,共7页Nanotechnology and Precision Engineering

基　　金：国家自然科学基金资助项目(51775380);中国科协"青年人才托举"工程资助项目(2016QNRC001)

摘　　要：针对大尺寸视觉测量领域的相机标定问题,研究了一种使用精密二轴转台和单个固定不动的光学参考点进行相机标定的方法.通过精密二轴转台带动相机做二维转动并拍摄前方光学参考点,从而构建精密的角度基准控制场并实现标定.该方法有如下优点:无需调整或已知参考光点与相机和转台之间的位置关系;测量全程由程序控制自动高效完成;同时,针对不同的测量任务和测量相机,测量空间和测量距离可通过调整转台的转动幅度以及控制参考点到相机的距离实现任意灵活配置,从而保证标定控制场和相机测量视场相一致.标定实验验证了本文提出的标定方法具有较高的标定精度.A novel camera calibration technique is presented in the field of large-scale vision measurement, which employs a precise two-axis rotary table and a single stationary optical reference point. By moving the camera at different angular positions of the rotary table, and simultaneously taking photos of the stationary optical point in front of it, a precise angular control field is established for calibration. This technique brings such advantages as ： there is no need to know the location relationship among the camer- a, the reference point and the rotary table previously; the whole course of calibration is processed by computer program automatically ; and this method adapts to different imaging systems and measuring tasks easily by adjusting the rotating range of the rotary table and the distance from the reference point to the camera, so that the calibration space and the measurement space coincide with each other. Calibration experiments verify that the proposed method has high accuracy.

关 键 词：大尺寸视觉测量 相机标定 精密转台 角度控制场 

分 类 号：TN305.7[电子电信—物理电子学]