拟合标定模型的火炮稳像标定方法研究  

Gun Image Stabilization Calibration Method Based on Fitting Calibration Model

作　　者：岳鑫 李亮亮 王红军[1] 吕志刚[2,3] 刘丙才 Yue Xin;Li Liangliang;Wang Hongjun;LüZhigang;Liu Bingcai(School of Optoelectronic Engineering,Xi’an Technological University,Xi'an,Shaanxi 710021,China;School of Electronic and Information Engineering,Xi’an Technological University,Xi'an,Shaanxi 710021,China;School of Mechatronic Engineering,Xi’an Technological University,Xi'an,Shaanxi 710021,China)

机构地区：[1]西安工业大学光电工程学院,陕西西安710021 [2]西安工业大学电子信息工程学院,陕西西安710021 [3]西安工业大学机电工程学院,陕西西安710021

出　　处：《光学学报》2021年第15期77-87,共11页Acta Optica Sinica

基　　金：陕西省科技厅项目(2019JM-373)。

摘　　要：火炮武器瞄准镜标定的性能指标好坏直接影响首发命中概率,为了提高火炮稳像标定精度,建立了一种拟合标定模型。构建融合频域滤波的阈值分割模型消除成像灰度级不均匀的影响,构建长直线拟合模型实现火炮稳像靶心的标定,构建标定定位轴模型实现稳像精准标定检测。所提方法可有效地消除成像灰度级不均匀现象,具备较好的分割去噪效果,横纵向标定长直线的拟合相关系数分别为0.995646和0.993913,横纵向坐标标定误差分别为小于等于0.15%和小于等于0.005%。实验结果表明,所提标定方法可精准地实现火炮瞄准镜的标定检测。To improve the accuracy of gun image stabilization calibration, a fitting calibration model was designed to improve the calibration property of a gun’s collimator, which is expected to increase the shell’s hitting probability. A threshold segmentation model fused via frequency-domain filtering was constructed to eliminate the influence of uneven imaging gray levels. A long line-fitting model and calibration-positioning axis model were constructed to calibrate the target center and realize accurate detection of the image’s stabilization calibration, respectively. The results demonstrate that the proposed method exhibits good segmentation and denoising effect and can effectively eliminate the uneven phenomenon of imaging gray levels. The fitting correlation coefficient of the horizontal and vertical demarcated long lines is 0.995646 and 0.993913, respectively, and the calibration error of horizontal and vertical coordinates is less than or equal to 0.15% and 0.005%, respectively. Overall, the experimental results demonstrate that the designed calibration method can accurately achieve calibration detection of gun sight.

关 键 词：图像处理 火炮稳像标定 阈值分割 拟合模型 标定轴模型 

分 类 号：TP391.7[自动化与计算机技术—计算机应用技术] TH745[自动化与计算机技术—计算机科学与技术]