Warhead fragments motion trajectories tracking and spatio-temporal distribution reconstruction method based on high-speed stereo photography

扫码查看

原文链接

万方数据
维普

外文摘要：High speed photography technique is potentially the most effective way to measure the motion parameter of warhead fragment benefiting from its advantages of high accuracy,high resolution and high efficiency.However,it faces challenge in dense objects tracking and 3D trajectories reconstruction due to the characteristics of small size and dense distribution of fragment swarm.To address these challenges,this work presents a warhead fragments motion trajectories tracking and spatio-temporal distribution reconstruction method based on high-speed stereo photography.Firstly,background difference algo-rithm is utilized to extract the center and area of each fragment in the image sequence.Subsequently,a multi-object tracking(MOT)algorithm using Kalman filtering and Hungarian optimal assignment is developed to realize real-time and robust trajectories tracking of fragment swarm.To reconstruct 3D motion trajectories,a global stereo trajectories matching strategy is presented,which takes advantages of epipolar constraint and continuity constraint to correctly retrieve stereo correspondence followed by 3D trajectories refinement using polynomial fitting.Finally,the simulation and experimental results demonstrate that the proposed method can accurately track the motion trajectories and reconstruct the spatio-temporal distribution of 1.0×103 fragments in a field of view(FOV)of 3.2 m×2.5 m,and the ac-curacy of the velocity estimation can achieve 98.6％.

外文关键词：

Warhead fragment measurementHigh speed photographyStereo visionMulti-object trackingSpatio-temporal reconstruction

作者：

Pengyu Hu、Jiangpeng Wu、Zhengang Yan、Meng He、Chao Liang、Hao Bai

展开 >

作者单位：

Xi'an Modern Control Technology Research Institute,Xi'an,710065,China

Xi'an OET Science and Technology Co.,Ltd,Xi'an,710076,China

基金：

Key Basic Research Project of Strengthening the Foundations Plan of ChinaNational Defense Basic Scientific Research Program of China

项目编号：

2019-JCJQ-ZD-360-12JCKY2021208B011

出版年：

2024

DOI：

10.1016/j.dt.2024.02.009

防务技术

中国兵工学会

防务技术

CSTPCD

影响因子：0.358

ISSN：2214-9147

年,卷(期)：2024.37(7)