基于无人机倾斜摄影测量的虚拟校园漫游系统设计与实现

Design and implementation of virtual campus roaming system based on UAV tilt photogrammetry

针对商用建模软件现有的漫游功能单一、需要手动设置多角度、不能进行人机交互等问题,提出一种基于无人机倾斜摄影测量技术高效率、高可视性、高精度、真实纹理等优点,能够实现碰撞检测的自主漫游功能的方法。该方法以实景三维模型为基础,结合人机交互及控件脚本等进行功能实现,最后构建虚拟校园漫游系统。为检验实景三维模型构建漫游系统的可行性,以山西能源学院的地形以及地物为基础和模板,利用无人机倾斜摄影测量技术建立校园三维模型,通过检验,得出模型X方向的中误差为0.038m,Y方向的中误差为0.035 m,H方向的中误差为0.043 m,平面中误差为0.052 m,可用于虚拟校园漫游系统的构建。研究表明无人机倾斜摄影测量技术可以实现数字校园场景的第一人称、第三人称自主漫游和自动漫游设计,能够为漫游系统设计提供精确实景模型,为虚拟校园建设提供可行的设计与实现方案。

In view of the existing roaming functions of commercial modeling software,such as single function,manual setting of multi-angle,and inability of human-computer interaction,a method of autonomous roaming function capable of collision detection is proposed based on the advantages of high efficiency,high visibility of UAV tilt photogrammetry technology,high precision and real texture.This method is based on the real three-dimensional model,combined with human-computer interaction and control scripts,and finally builds a virtual campus roaming system.In order to test the feasibility of real 3D model building roaming system,based on the terrain and ground of Shanxi Energy University,the campus 3D model was established.Through inspection,the error of model X direction is 0.038m,Y direction is 0.035m,H direction is 0.043m,which can be used for the construction of virtual campus roaming system.The research shows that the UAV tilt photogrammetry technology can realize the first-person and third-person autonomous roaming and automatic roaming design of the digital campus scene,which can provide an accurate real scene model for the roaming system design,and provide a feasible design and implementation scheme for the virtual campus construction.