激光与光电子学进展, 2016, 53 (11): 111501, 网络出版: 2016-11-14   

靶场静爆实验测速高速相机标定方法 下载: 764次

High Speed Camera Calibration for Velocity Measurement in Range Static Explosion Experiment
作者单位
1 军械工程学院火炮工程系, 河北 石家庄 050003
2 国防科技大学航天科学与工程学院, 湖南 长沙 410073
摘要
设计了适用于靶场静爆实验现场的标定设备,研究了基于遗传模拟退火的高速相机标定方法,采用设计的标定设备开展了双目高速相机内外参数标定实验。根据实验采集的圆形人工标志位置参数,分别采用基于遗传模拟退火的标定方法和Tsai两步标定法对双目高速相机参数进行标定,并利用标定结果分别还原视野内位置已知点的空间坐标。将还原的空间坐标与实际测量坐标进行对比,可以发现基于遗传模拟退火的标定法还原的空间坐标最大偏差为0.0082 m,优于Tsai两步法得到的最大偏差(0.0201 m),提出的方法提高了高速相机的标定精度,对提高破片速度测量精度具有重要意义。
Abstract
A calibration equipment for the range static explosion experiment site is designed, a calibration method for high speed camera based on genetic simulated annealing is studied, and an experiment which calibrates the internal and external parameters of the binocular high speed camera by the designed calibration equipment is carried out. According to the circular manually-labelled position parameters collected in experiment, the parameters of the binocular high-speed camera are calibrated by the genetic simulated annealing based method and the Tsai two step calibration method respectively. The parameters calibrated by the two methods are used to restore the spatial coordinates of known points in sight. By comparing the restored results with the measurement coordinates, it is found that the maximum deviation of the spatial coordinates restored by the proposed method is 0.0082 m, which is better than the maximum deviation of the Tsai two-step calibration method (0.0201 m). With the proposed method, the calibration accuracy of the high speed camera is improved, and the method is of great significance for the improvement of the fragment velocity measurement accuracy.
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刘泽庆, 张玉荣, 赵建新, 杜博军. 靶场静爆实验测速高速相机标定方法[J]. 激光与光电子学进展, 2016, 53(11): 111501. Liu Zeqing, Zhang Yurong, Zhao Jianxin, Du Bojun. High Speed Camera Calibration for Velocity Measurement in Range Static Explosion Experiment[J]. Laser & Optoelectronics Progress, 2016, 53(11): 111501.

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