基于几何相似法的弹丸类目标初速度测量方法

Tan Guangtong,Cheng Guomin,Li Changchun

摘要:

几何相似法隶属于单目视觉测量方法，单目视觉测量方法具有结构简单、计算速度快、稳定性好等优点，越来越多的应用于计算机视觉测量领域。依据几何相似法测量原理，提出一种基于几何相似法的单目视觉光学测速方法，主要用于弹丸类高速目标的初速度测量，相比于雷达、激光等测速方法具有可视化优势，目标飞行过程中状态细节可见，相比于其它单目视觉测量方法更加快捷、稳定，并且布站简单。经过试验测试，结果表明利用该方法进行速度测量，能够有效的给出弹丸类高速目标的初速度，测速误差在1%以内，验证了采用单相机进行弹丸类高速目标出筒初速度测量方法的可行性。

Abstract:

Geometric similarity method is subordinate to monocular vision measurement method, Monocular vision measurement method has simple structure, fast calculation speed, good stability and so on, more and more used in the field of computer vision measurement. According to the measurement principle of geometric similarity method, a monocular vision optical velocity measurement method based on geometric similarity method is proposed, mainly used for initial velocity measurement of high-speed projectile targets, compared with radar, laser and other speed measurement methods, it has visual advantages. The target’s state details are visible during flight, and it is faster and more stable than other monocular vision measurement methods, and the layout is simple. After experimental verification, the results show that using this method to measure speed, the target initial velocity can be given effectively, the speed measurement error is within 1%. The feasibility of measuring the initial velocity of projectile high-speed target by using single-camera is verified.