多光点位置实时检测系统及其应用

提出了一种多个光点中心位置的实时同步检测系统,该系统可以实时地同时获取多个光点在图像中的位置.以解决现有光点位置检测系统无法同时测量多个光点或无法进行实时检测的问题.该系统采用CCD相机采集带有多个光点的图像,并用现场可编程门阵列(FPGA)实现图像采集的控制,图像分割算法和光点中心位置的计算,从而大大提高了图像处理的速度.实验表明该系统具有较高的精度,速度可以达到实时测量的要求,并且使用硬件资源较少,能够在中低密度的FPGA上实现.最后本文介绍了该系统在基于激光的列车车体姿态检测中的应用.

Real-time measurement system for central positions of multiple light spots and its application

Existing spot centroid measurement systems are either unable to measure multiple light spots at the same time, or unable to measure light spot in real-time. We propose a synchronous real-time measurement system which can measure multiple centroids of light spots simultaneously. This system uses a CCD camera to acquire images including spots, and uses a field programmable gate array (FPGA) to implement the acquisition control, the image segmentation and the calculation of the centroid of the spots. Consequently, the processing speed of the system is highly increased. According to the experimental result, the processing result of this system is accurate and the processing speed is high enough for real-time measurement. Moreover, the FPGA implementation uses limited hardware resource; it can be implemented in small-scale FPGA. Its application on laser-based attitude measurement system is introduced.