基于倾斜摄影和激光雷达的大规模城市(深圳)三维建模探索

Shenzhen practice of applying oblique photography and LiDAR technology to large-scale 3D city modeling

近年来,虽然实景三维建模技术高速发展,然而城市级高精度三维模型构建仍面临多传感器融合、点云语义分割和结构化三维重构等技术难点,制约了城市实景三维发展。本文以深圳市全市域三维建模工程为案例,介绍基于倾斜摄影和激光雷达的大规模城市三维建模技术路线和生产工艺,分析工程实践中的难点和解决思路,探讨实景三维产品标准和未来发展方向。

In recent years,the reality 3 D modeling technology has developed rapidly,but the construction of high-precision 3 D model at the city level still faces the technical difficulties of multi-sensor fusion,point cloud semantic segmentation and structured three-dimensional reconstruction,which restricts the development of reality 3 D city modeling.Taking the 3 D modeling project of Shenzhen city as a case study,this paper introduces the technical route and production process of large-scale 3 D city modeling based on oblique photography and lidar,analyzes the difficulties and solutions in engineering practice,and discusses the standards of reality 3 D modeling products and the future development direction.