高精度智慧城市实景三维模型构建的关键技术

The Key Technology of High-precision Smart City Real-life Three-dimensional Model Construction

高精度智慧城市实景三维模型构建是建设智慧城市的关键,有必要加大对实景三维模型构建的关键技术研究。以沈阳市某地实地现场的实景三维模型构建为对象,采用倾斜摄影技术与地面激光雷达技术进行点云数据的获取,并将对应生成的稀疏点云与激光雷达点云相融合,经过点云配准与纹理贴图,获取到高精度智慧城市实景三维模型,以解决单一技术在实景三维模型构建上的不足问题。为验证技术有效性,对三维模型精度进行评估,最终构建的高精度智慧城市实景三维模型精度整体效果良好,与实际地物状况相契合,可满足模型应用要求。

The construction of high-precision three-dimensional model of the real scene of the smart city is the key to the construction of the smart city,and it is necessary to increase the research on the key technology of the construction of the real scene three-dimensional model.Taking the construction of real-life 3D model of a field site in Shenyang city as the object,we adopt the tilt photography technology and ground LiDAR technology to acquire the point cloud data,and fuse the corresponding sparse point cloud with the LiDAR point cloud,and acquire the high-precision smart city real-life 3D model after point cloud alignment and texture mapping,in order to solve the insufficiency of a single technology in the construction of real-life 3D model.In order to verify the effectiveness of the technology,the accuracy of the 3D model is evaluated,and the accuracy of the finally constructed high-precision 3D model of the smart city landscape is good,and it fits with the actual physical condition,which can meet the requirements of the model application.