车载激光扫描的三维信息融合技术

本文针对具体应用领域,分析了传统三维量测手段的不足,提出了将激光扫描技术和定位定姿技术运用于车载平台获取三维信息的技术途径;概述了车载激光扫描的系统架构和工作原理,详细分析了激光点云与GPS数据、IMU数据及数字图像的多源信息融合算法;并对实验结果进行了分析。结果表明:该方法具有高效率、高精度、无需控制点、全自动化等技术优势,在数字城市建设、应急救灾等领域具有广阔的应用前景。

Three-dimensional information fusion technology based on vehicle-borne laser scanning

In this paper,the disadvantages of traditional three-dimensional measuring methods were analyzed with specific applications,and the innovative technique was presented,which combined the laser scanning technology and the position and attitude determination technology into the vehicle-borne system.Secondly,the system architecture and working principles were summarized,and multi-source information fusion algorithms were analyzed in detail.The algorithms include the fusion of the laser point cloud and the data of GPS and IMU,and the fusion of the laser point cloud and the images.Finally,the experiment was introduced,and the results were discussed.Experimental results showed that the proposed method has many technical advantages such as high efficiency,high precision,without control points,and automaticity,which would have a good prospect of applications in many fields such as digital city construction,emergency rescue,disaster relief and so on.