基于高速相机的破片速度计算方法  

Fragment Velocity Calculation Method Based on High Speed Camera

作　　者：戴志远 闫克丁 DAI Zhiyuan;YAN Keding(Xi'an Technological University,Xi'an 710021)

机构地区：[1]西安工业大学,西安710021

出　　处：《计算机与数字工程》2021年第8期1647-1650,共4页Computer & Digital Engineering

基　　金：国家自然科学基金项目“基于深度神经网络的粗糙表面散射理论研究”(编号:11804263);国家自然科学基金项目“基于斜率概率密度函数的随机粗糙表面全角度空间散射光分布快速计算方法研究”(编号11747119)资助。

摘　　要：针对靶场静爆实验中破片测速项目,提出了基于高速相机测量技术的破片测试方法。通过分析测试原理,建立测试系统,通过模拟实验,解决了测试现场中高速相机如何摆放和相机参数标定的问题。通过对测试所得的破片序列图像进行帧间差分法处理,提取出模拟破片的像素坐标,进一步解算出破片的实际飞行速度。模拟实验结果表明,该方法能够很好计算出模拟破片的飞行速度,对于靶场破片测速试验提供了一种新方案。Aiming at the item of fragment velocity measurement in the static explosion experiment of shooting range,a method of fragment measurement based on high speed camera measurement technology is proposed.By analyzing the test principle and establishing the test system,the problems of how to place the high-speed camera and how to calibrate the camera parameters in the test site are solved through the simulation experiment.The image sequence of fragments obtained from the test is processed by the frame difference method,and the pixel coordinates of the simulated fragments are extracted,and the actual flight speed of the fragments is further solved.The simulation experiment results show that this method can calculate the velocity of simulated fragments well,and it provides a new scheme for the velocity measurement test of fragments in shooting range.

关 键 词：破片测速 目标提取 三帧差分法 

分 类 号：TN29[电子电信—物理电子学]