摘要
剧烈运动目标跟踪过程中,对像素点的跟踪准确率低,图像变形问题严重,为此提出一种基于激光后向散射的运动目标定点跟踪系统,由于空气内微粒以及分子能够散射和吸收激光光束,根据空气信道接收器所接收信号衰弱程度,测量空气能见度值,再通过自适应阈值法分离图像背景,利用矩阵提取运动目标中部分可分性以及稳定性特征量,最后在图像内找出目标的位置信息,形成跟踪误差信号,驱动伺服机构完成跟踪。实验证明,本方法具有较高跟踪精度,对跟踪区域的拟合程度最高达到94.63%,适用于非刚性物体尺度变换以及运动变形定点跟踪。
In the process of tracking violent moving targets,the tracking accuracy of pixels is low,and the image distortion is severe.Therefore,this paper proposes a fixed-point tracking system for moving objects based on laser backscattering.Because particles and molecules in the air can scatter and absorb laser beams,the air visibility value is measured according to the air channel receiver’s signal attenuation degree.The adaptive threshold method is used to separate the image background,and the matrix is used to extract the partial separability and stability characteristics of the moving target.Finally,the target’s position information is found in the image to form the tracking error signal,which drives the servo mechanism to complete the tracking.The experimental results show that the proposed method has high tracking accuracy,and the fitting degree of the tracking area is up to 94.63%,which is suitable for scale transformation of non-rigid objects and fixed-point tracking of motion deformation.
作者
王柯
牛伟忠
刘其龙
WANG Ke;NIU Weizhong;LIU Qilong(Baise University,Baise Guangxi 533000,China)
出处
《激光杂志》
CAS
北大核心
2021年第4期164-168,共5页
Laser Journal
基金
国家自然科学基金(No.61905149)
广西高等教育本科教学改革工程项目(No.2019JGB353)。
关键词
激光后向散射技术
运动目标
乒乓球运动
定点跟踪系统
laser backscatter technology
moving target
table tennis movement
fixed point tracking system
