摘要
根据运动目标性能试验需求及试验平台的特点,建立一个影像数据测量系统,实现目标的运动视频记录和外部参数测量。采用基于OpenCV的棋盘格内参数标定结合基于平台上固定标识点、线为基准的外场标定的摄像机标定方法,采用高速影像数据、中线视频数据和GPS数据相结合的方法实现目标运动的轨迹、姿态等参数的测量。通过测量精度分析及多次试验结果证明,测量精度达到水平方向优于10cm,高程方向优于5cm,姿态精度优于0.5°。
An image data measurement system was created based on the moving target performance testing requirements and the characteristics of test platform,in order to realize video recording and external parameters measurement of the target.Multiple high-speed cameras were reasonably arranged from calculated distance of the camera and mimic diagram.Camera calibration method was used which is combined the checkerboard-lattice parameter calibration in OpenCV with the line-basis field calibration.Additional,high-speed image data,midline video data and GPS data were combined to achieve the measurement of position,attitude and other external parameters.Analysis of measurement accuracy and experimental results prove that the measurement method is accurate and reliable.Its coordinate accuracy is better than 10 cm in horizontal direction and 5 cm in elevation direction,and the attitude accuracy is better than 0.5°,which fully meet the measurement accuracy requirements.
出处
《应用光学》
CAS
CSCD
北大核心
2013年第4期619-623,共5页
Journal of Applied Optics
关键词
动平台
高速影像
中线视频
GPS数据
运动目标测量
精度分析
moving platform
high-speed image
midline video
GPS data
measurement of moving object
precision analysis
