面向高耸古塔的无人机视频环拍实景三维建模方法

The real 3D modeling method of UAV video loop shooting for towering ancient pagodas

针对高耸古塔的实景三维建模效率低、成本较高的问题,本文提出一种无人机三相位环拍视频匀分帧建模方法。选用配备单镜头相机的小型多旋翼无人机,布设高、中、低3个相位分别对高耸古塔进行环拍视频采集并进行匀分帧处理。选取宁夏银川市兴庆区承天寺塔为试验对象进行实例建模,并与广泛使用的无人机拍照摄影式倾斜摄影建模方法对比,从建模效率、建模空三质量及整体模型质量3方面对比两种采集方式的建模效果。结果表明,本文方法的建模效果优于无人机倾斜摄影的三维建模效果,在优化采集过程和简化设备条件的基础上,保证了模型的完整度,提升了建模效率和建模质量。

Aiming at the problem of real 3D modeling of towering ancient pagodas,a unmanned aerial vehicle(UAV)three-phase loop shooting video homogeneous frame modeling method is proposed.A small multi-rotor drone equipped with a single-lens camera is selected,and three phases of high,medium and low are arranged to capture video around the towering ancient pagoda and perform even frame processing.The Chengtian temple pagoda in Xingqing district,Yinchuan city,Ningxia,is selected as the test object for example modeling and compared with the widely used UAV photo-photographic oblique photography modeling method in 3 aspects:modeling efficiency,modeling air-three quality and overall model quality.The results show that the modeling effect of the method is better than the three-dimensional modeling effect of UAV oblique photography.On the basis of optimizing the acquisition process and simplifying the equipment conditions,the integrity of the model is guaranteed,and the modeling efficiency and modeling quality are improved.