红外相机光轴标定研究

Study on calibration method of infrared camera optical axis

随着红外技术的不断发展,红外成像定位系统在现代工程测量中的应用越来越广泛。大部分测量系统一般都会选取红外相机的光轴作为系统的参照基准,因此红外相机的光轴标定的准确性将直接决定整套测量系统的准确度等级。激光跟踪仪是空间尺寸测量的一种常用仪器,它可以建立笛卡尔三维坐标系将空间任意点以坐标点形式表示出来,通过坐标点确定系统中点、线、面之间的几何位置关系。利用三靶球位置坐标原理将红外相机的光轴等虚拟参数以空间坐标点的方式标示出来,为后续试验人员的校准定位工作提供一定的技术依据和参考。

With the development of infrared technology,the application of infrared imaging system in modern engineering measurement is more and more widely.Most of the measuring system generally choose the infrared camera optical axis as the reference system.So the accuracy of the optical axis and the image center of the infrared imaging system will directly determine the accuracy of the measurement system.Laser tracker is a kind of space size measurement instruments,which can mark any coordinate point by establishing 3dcoordinate system and then use coordinate point to determine the position relations of point line,surface.A calibration method of infrared imaging system based on laser tracker auxiliary can obtain virtual axis camera 3dcoordinate quickly and accurately to convenience for the operators.