基于移动平台的激光点云与数字影像融合方法

The 3D Visualization's Approach Based on Vehicle-borne Laser Scanning

车载激光扫描系统集成多种传感器,可以在获取三维激光点云数据的同时获取相应的光学影像,融合处理激光点云和光学影像能实现城市场景的真彩色三维可视化.本文讨论如何在车载系统的基础上对纹理的采集,纹理的重建进行研究和改进.分析了采集平台、采集的原则,建立了激光点云与数字影像的映射关系,生成彩色激光点云,重点阐述原始彩色激光点云的特点,提出了基于数值内插的方法来提升彩色激光点云的纹理分辨率,从而增强城市场景真彩色三维可视化的效果,并对结果进行了分析.

Vehicle-borne Laser Scanning of multiple sensors can obtain 3D laser point clouds and corresponding optical images.The true chromatic model of city scene may be realized with the help of integration of laser point clouds and optical images.This paper discussed how to research and improve texture collection and reconstruction based on available vehicle-borne laser scanning system.The platform and principle of data obtaining are analyzed.The mapping model is built between the point clouds and digital images and as a result colour point clouds is generated.As a key,the characteristics of the original colour point clouds are stated,numerical interpolation is proposed to ascend the resolution of colour point clouds,in order to enhance true colour 3D visualization＇s effect of city scene.Experiments are conducted and the results are clarified.