基于低空无人机影像的智慧楼宇精细化三维模型构建方法

A method of building fine 3D model of intelligent building based on low altitude UAV image

由于智慧楼宇矢量数据难以获取,影响构建的三维模型精细度,提出基于低空无人机影像的智慧楼宇精细化三维模型构建方法。基于低空无人机摄影获取智慧楼宇影像数据,预处理影像数据,通过影像的密集匹配、三角网构建以及纹理映射步骤构建智慧楼宇精细化三维模型,修补三维模型空洞,确保模型精细化程度。实例应用结果表明:本文方法构建的智慧楼宇精细化模型平面中误差6.13 cm,高程中误差6.21 cm,验证该方法的正确性,可以构建高精度、高质量的智慧楼宇三维模型。

Since vector data of intelligent buildings is difficult to obtain,which affects the fineness of three-dimensional(3D)models,a method for constructing detailed 3D models of intelligent buildings based on low altitude unmanned aerial vehicle(UAV)images was proposed.The image data of intelligent buildings based on low altitude UAV photography was acquired and preprocessed to build the refined 3D model of intelligent buildings through image intensive matching,triangulation and texture mapping steps.The holes in the 3D model were repaired to ensure the degree of refinement of the model.The application results of the example showed that:the plane mean square error of the refined model of intelligent building constructed by this method was 6.13 cm,and the elevation mean square error was 6.21 cm,which verified the correctness of this method and could build a high-precision and high-quality three-dimensional model of intelligent building.