基于双目立体视觉测量原理的物体运动速度测量

Measurement on velocity of dynamic object in long distance based on binocular vision system

采用双目立体视觉测量系统进行炮弹速度的测量,实现一种利用无速度测量因素测量设备测速的新方法。选择合适参数的两台摄像机获得被测物体清晰的像,将两台摄像机搭建成光轴平行的双目视觉测量系统,获得炮弹在运行过程中的每一时刻的三维轮廓数据,根据获得的三维数据进行空间位置节点的三维插值,得到炮弹在t时间段内运行的距离,并求取平均速度。仿真实验结果表明,本文方法可以准确、快速利用无速度测量因素的测量设备获得炮弹的运行速度。

A novel method to obtain the velocity of dynamic object using the equipment with out velocity measurement factor is presented in this paper.A binocu lar stereo vision measurement system is used to measure the velocity of projectile.Firstly,we se lect the suitable parameters of two CCDs in order to obtain a clearer image of the measured movi ng object.Then based on the binocular vision system formed with the two CCDs selected,the 3-D coordinate data of the measured object are obtained.Secondly,the 3-D interpolation method is improved to interpolate the 3-D coordinate data of the measured model at dif ferent moments which are obtained by stereo matching.According to the 3-D data,the 3-D interpolation of the space position node is used to get the distance of the missle in the time period .And then the mean velocity is obtained.The experimental results show that using the equipment without velocity measurement factor,the method has higher precision ,and can meet the requirement for the dynamic parameter of moving objects in a long distance.