基于FPGA激光光斑中心定位的设计

Design of Laser Spot Center Positioning Based on FPGA

针对激光三角法采集光斑图像,设计一种并行计算获得光斑中心坐标的方法;应用计算机软件设计并验证可移植的算法,进而在进行算法硬件移植;通过验证后采用质心方法获得光斑中心坐标,在硬件系统工作过程中,采集图像每一行数据时,就开始计算中心位置,而不需存储整幅图像再遍历获得光斑中心位置,减少在图像处理过程中存储空间的占用,再次运算读取图像所消耗的时间。

Aiming at collecting the spot image of laser triangulation method,a parallel calculation method is designed to obtain the spot center coordinates.The portable algorithm is designed and verified by computer software,and then the algorithm is transplanted to hardware.After the algorithm is verified by computer,the centroid method is used to obtain the coordi-nates of the spot center.During the working process of the hardware system,the center position is calculated when the da-ta of each line of the image is collected,without storing the whole image and traversing to obtain the center position of the light spot.The hardware reduces the occupation of storage space in the process of image processing,and recalculates the time consumed by reading images.