面向复杂体型建筑物的无人机倾斜摄影航线规划研究

为解决复杂体型建筑物存在拍摄盲区较多、影像采集分辨率差异较大而导致建模效果差的问题,本文提出一种无人机立体环绕式摄影与精细化建模方法.选用单镜头小型多旋翼无人机,根据复杂建筑物外观形态,设计出立体环绕式的影像采集航线,再将获取影像导入Context Capture软件进行分析和处理并完成模型建立,最后针对三维模型存在纹理缺失及模糊拉花等问题,使用DP-Modeler和3ds Max对模型进行联动修饰.以某公园内两相邻建筑物为研究对象,分别采用本文方法与传统无人机倾斜摄影方法,从建模效率、模型精度和纹理细节3方面进行对比实验.结果表明,本文方法具有建模效率高、精度高和纹理丰富的优点,提升了复杂体型建筑物建模的质量和效率,联动修饰解决了影像采集过程中信息缺失的问题,可以显著提升模型细节质量.

Route planning of UAV tilt photography for complex buildings

To solve the poor modeling performance caused by many blind areas and large difference in image resolution for complex buildings,a 3D surround photography and refined modeling approach is proposed for UAV photography.First,a 3D surround image acquisition route is designed for a small single-lens multi-rotor UAV according to the appearance of complex buildings.Then the acquired images are imported into Context Capture software,which are analyzed and processed for model establishment.Finally,DP-Modeler and 3ds Max are used to modify the model so as to solve the information missing such as lack of texture and fuzzy drawing.The proposed approach is then compared with traditional UAV tilt photography in modeling efficiency,model accuracy and texture details with two adjacent buildings in a park as research object.The results show that the proposed method has the advantages of high modeling efficiency,high precision and rich texture,improves the quality and efficiency of complex building modeling,solves the information missing in image acquisition via combined modification,and significantly improves the quality of model details.