摘要
为了提高运动目标丢点检测率,提出振镜式激光扫描运动目标丢点检测和补偿方法。先采用振镜式激光扫描运动场景中运动目标,提取运动目标静态背景,依照多种垂直偏转角度下的振镜式激光扫描数据构建静态背景数据库,采用背景差分处理检测静态背景数据,获取含有运动目标区域的扫描点,处理扫描点集获取运动目标点集。再采用希尔伯特变换分析运动目标点集中轨迹相位差,对比轨迹相位差和既定值检测运动目标丢点,构建不同性质下丢点补偿参数函数,采用最小二乘法预测补偿参数,将运动目标补偿值填充到运动目标数据集中,获取完整运动轨迹。经过实验分析发现,该方法检测运动目标丢点检测率高于90%,补偿运动目标丢点后运动目标轨迹正确追踪率为98.4%。
In order to improve the lost point detection rate of moving target,a lost point detection and compensation method of galvanometer laser scanning moving target is proposed.Firstly,the galvanometer laser is used to scan the moving target in the moving scene,and the static background of the moving target is extracted.The static background database is constructed according to the galvanometer laser scanning data at various vertical deflection angles.The background difference processing is used to detect the static background data to obtain the scanning points with target area.Processing the scanning point set to obtain moving target points set.Then use Hilbert transform to analyze the trajectory phase difference of the moving target points,compare the trajectory phase difference and the predetermined value to detect the lost points of moving target,and to construct the lost point compensation parameter functions under different properties,and use the least square method to predict compensation parameters and the compensation values of moving target are filled into the moving target data set to obtain a complete moving trajectory.After experimental analysis,it is found that the detection rate of the method for detecting lost points of moving targets is higher than 90%,and the correct tracking rate is 98.4%.
作者
刘海洋
任双全
LIU Haiyang;REN Shuangquan(Northeast Petroleum University,Daqing Heilongjiang 163318,China)
出处
《激光杂志》
北大核心
2020年第7期67-71,共5页
Laser Journal
基金
黑龙江省教育厅(No.2018YDQ-13)。
关键词
振镜式
激光扫描
运动目标
丢点检测
补偿方法
轨迹相位差
galvanometer
laser scanning
moving target
lost point detection
compensation method
trajectory phase difference
