基于图像的高速摄像自动触发方法研究

Research on Automation Trigger Method for High Speed Photographic Device Based on Image

针对传统通过人工触发控制高速摄像机拍摄子母弹飞行过程来评估子母弹毁伤效能的方法受触发人员、天气和环境的影响比较大且不能实现无人值守这一现状,提出了一种通过判断靶场中子母弹和烟雾的状态进行高速摄像自动触发的方法。该方法应用自适应混合高斯模型来更新背景图像,采用数字减影法、OTSU阈值分割算法实现背景图像中目标的分割,统计分割后目标图像的面积,直线拟合连续帧统计的结果,最后给出系统触发条件。实验结果表明:该方法能够满足靶场实验实时性和可靠性的要求。

Traditional manual-trigger control method of high speed camera was used to shoot flight process of cluster round to evaluate its destroy efficiency.This method suffered from the influence of the staff,weather and environment,and it could not realize unmanned mode.Aimed at this situation,a kind of auto-trigger method was put forward.The method made use of judging the status of cluster round and smokes to carry out high speed camera auto-trigger.The method also made use of adaptive mixture Gaussian model to update background image.Thus the background subtraction method and OTSU adaptive thresholding segmentation algorithm were used to realize target segmentation in background image,and the statistic task after target area segmentation was performed.Combined with straight line fitting statistic results in continuous frames,the system trigger condition was given.The results of experiment proved that this method can meet the requirements of real time capability and reliability in firing range tests.