基于三维激光扫描数据的360度环视显示系统设计  

Design of 360 degree circle view display system based on 3D laser scanning data

作　　者：汪永吉[1] 何春华[1] WANG Yongji;HE Chunhua(Xiangsihu College of GuangXi Minzu University,Nanning 530008,China)

机构地区：[1]广西民族大学相思湖学院,南宁530008

出　　处：《激光杂志》2023年第11期162-166,共5页Laser Journal

基　　金：广西高校中青年教师科研提升项目自然科学项目(No.2022KY1603);广西民办教育科学规划课题重点项目(No.2022MBZX09);广西民族大学相思湖学院校级科研重点项目(No.2021XJKY02)。

摘　　要：360度环视显示的像素采样噪声较高,基于三维激光扫描数据设计360度环视显示系统。在系统硬件中,设计供电模块,得到电源转换装置,设计数据采集接口,通过激光扫描装置获取系统成像数据。在系统软件设计中,处理目标回波信号,分别得到发射信号、信号发射瞬时频率,分析测距信号频谱分布,得到目标回波信号表达式。建立信号噪声过滤模型,将无关噪声转换为加性回波信号,得到滤波处理后的像素强度,建立该信号噪声滤波器的数学表达式。建立投影函数,计算感光传感器上的图像坐标值,得到360度环视显示成像。实验结果显示,设置维纳滤波常数为0.06,此时的显示影像数量越多,环视显示系统的噪声抑制效果越好。The pixel sampling noise of 360 degree circular display is relatively high.A 360 degree circular display system is designed based on 3D laser scanning data.In the system hardware,the power supply module is designed to obtain the power conversion device,and the data acquisition interface is designed to obtain the system imaging data through the laser scanning device.In the system software design,the target echo signal is processed to obtain the trans-mission signal and the instantaneous frequency of signal transmission,and the spectrum distribution of ranging signal is analyzed to obtain the target echo signal expression.The filtering model of signal noise is established,and the irrele-vant noise is converted into the additive echo signal to obtain the filtered pixel intensity,and the mathematical expres-sion of the signal noise filter is established.The projection function is established,and the image coordinate value on the photosensitive sensor is calculated to obtain the 360 degree circular display image.The experimental results show that when the Wiener filter constant is set to 0.06,the more images are displayed,the better the noise suppression effect of the look around display system.

关 键 词：三维激光扫描 激光扫描数据 360度 环视显示系统 回波信号处理 

分 类 号：TN06[电子电信—物理电子学]