摘要
基于近景摄影测量理论和立体视觉技术,提出并实现了一种针对机身结构件在飞行状态下的轨迹、姿态、位移、变形等多种运动数据的动态视觉测量方法。研究了基于工业近景摄影测量的多相机快速自标定方法;飞行状态下相机动态定位及抖动消除技术;刚性结构件的运动轨迹及姿态的快速求取和通过多相机(≥3)协作实现非编码标志点阵列的精确匹配等多项关键技术。在模拟飞行环境下的实验结果表明,相机标定的重投影误差小于0.03pixel,系统的运动轨迹姿态测量精度可达0.01mm/1m,关键点位移变形测量精度可达0.05mm/1m,基本满足飞机测试行业的精度和可靠性测量标准。
In order to obtain the movement data of an aircraft, including trajectory, attitude, displace- ment, deformation and other kinds of movement data of the aircraft structural parts in the flight accu- rately, an optical and dynamic measurement method is proposed and implemented based on the theory of close-range photogrammetry and stereo vision technology. The main contents of the method are multi-camera self-calibration technique based on close-range photogrammetry, camera dynamic posi- tioning and jitter eliminating in flight technology, rapid acquisition for the trajectory and attitude of rigid structure, precise matching of non-coding landmark array by multi-camera （≥3） collaboration. The simulation results show that the reprojection error of the camera is less than 0.03 pixel, the traj- ectory and attitude measurement accuracy of the system can be up to 0.01 mm/1 m, and the measure- ment accuracy of key point displacement and deformation is 0.05 ram/1 m. It demonstrates that the system have met the standards of accuracy and reliability for aircraft testing industry.
出处
《光学精密工程》
EI
CAS
CSCD
北大核心
2012年第9期1929-1938,共10页
Optics and Precision Engineering
基金
国家科学自然基金资助项目(No.50975219)
江苏省科技支撑计划资助项目(No.BE2008058)
关键词
相机自标定
相机动态定位
轨迹姿态求取
多相机匹配
立体视觉
camera self-calibration
camera dynamic positioning
trajectory and attitude acquisition
multi-camera matching
stereo vision
