线阵CCD精度靶图像触发算法设计

Design of Image Triggering Algorithm for Linear Array CCD Precision Target

针对线阵CCD精度靶测量弹丸坐标时需要额外触发光幕发送触发信号来决定其何时开始采集的问题;在图像采集过程中,设计一种图像触发算法在接收线阵CCD相机的图像数据信号的同时自动检测弹丸并实时发送触发信号;通过研究弹丸图像的特性以及算法在FPGA上的硬件实现方法,利用当前采集到的图像对算法进行了实验验证;实验验证表明,该算法可有效识别弹丸信号,并能排除其它非弹丸信号的干扰;该算法对提高线阵CCD精度靶触发精度,精简线阵CCD精度靶结构具有十分重要的意义。

According to the linear CCD measurement precision target projectile coordinate additional trigger screen transmits a trigger signal to decide when to start the acquisition problem.In the image acquisition process,the design of a trigger device and image acquisition device and receiving image data signal line array CCD camera,automatic detection and real-time transmission of the trigger signal of projectile.By studying the characteristics of projectile image and the hardware implementation method of the algorithm on the FPGA,the algorithm is verified by experiments using the currently collected images.Experiments show that the algorithm can effectively identify projectile signals and eliminate the interference of other non-projectile signals.This algorithm is very important to improve the triggering accuracy of linear array CCD precision target and to simplify the structure of linear array CCD precision target.