红外零位走动量测量中的相机姿态自适应补偿

为提高红外零位走动量测量精度,针对测量过程中相机姿态变化误差引起的图像定位精度不高问题,提出了一种CCD相机姿态小角度变化自适应补偿方法。通过理论分析,推导出相机姿态解算公式,建立了CCD相机姿态解算数学模型,然后基于某型红外瞄具零位走动量测量系统,分别针对三种相机姿态,对瞄具分划线在参考坐标系中的坐标进行了对比实验。结果表明,测量精度优于0.01 mil,能减小相机倾斜对红外瞄具零位走动量测量带来的误差,为提高零位走动量测量精度提供了一种相机姿态自适应补偿的新方法。

Camera position adaptive compensation in infrared zero momentum measuring

In order to improve the measurement precision of infrared zero momentum, specific to the problem that the image positioning accuracy caused by camera pose changing was not high, an adaptive correction algorithm of CCD camera pose small angle changing was proposed. Through the theoretical analysis, a mathematical model of the CCD camera pose calculation was established and a camera pose calculation formula was deduced. According to the infrared sight aiming baseline variation detection system, specific to the three kinds of camera pose, a contrast experiment that aiming baseline coordinate was measured in the reference coordinate system was completed. The results show that the calculating precision is 0.01 mil or less. and camera pose adaptive correction algorithm can decrease the error of the infrared sights zero momentum measurement caused by camera tilt, which provided a new method of camera position adaptive compensation for enhancing zero momentum measurement precision.