为满足红外瞄具零位走动量数字化、高精度的检测需求，设计了基于电荷耦合器件(CCD)机器视觉技术的红外瞄具零位走动量检测系统。提出一种新的零位走动量检测模型，依据检测系统的技术指标及要求，设计了离轴抛物面反射式准直光学系统及针孔靶。为减小由相机倾斜引入的测量误差，建立了相机姿态自适应校正模型，并首次将其应用于零位走动量测量中。设计了图像判读软件，采用重心法对靶标中的圆斑中心进行定位，利用泽尼克矩的旋转不变性，对边缘像素点进行细分。成功研制了一台样机，加工装调后进行了测试实验，结果表明，系统的不确定度优于0.02 mil，能有效避免由相机倾斜引入的测量误差，满足红外瞄具零位走动量数字化、高精度测试要求。

In order to meet digital, high-accuracy detection requirements, a measuring system of infrared sight zero variable quantity based on charge coupled device (CCD) machine vision is designed. A new zero variable quantity measuring model is established. According to measuring system technical indicators and requirements, the off-axis parabolic collimator and pinhole target are designed. To reduce infrared sight zero variable quantity measuring error caused by camera tilting, a camera pose adaptive correction model is established, which is firstly applied to infrared sight zero variable quantity measuring. An image interpretation software is designed based on visual studio software development platform, using Gravity method to locate spot center of target image, and using Zernike orthogonal invariant moments to classify pixel on the edge. A functional prototype is successfully developed, processing equipment is tested after adjustment. The results show that its detection uncertainty is better than 0.02 mil, which can avoid measuring error caused by camera tilting and satisfy digital, high-accuracy test requirements on infrared sight zero variable quantity.