无人机倾斜摄影测量在房屋建筑面积测算中的应用

针对目前房屋建筑面积测量外业工作强度大、测量精度低、成图效率低等主要问题,本文提出了基于无人机倾斜摄影测量的房屋建筑面积测算方法。首先从无人机倾斜摄影、实景三维建模、数字正射影像制作、三维数字化测图、图件制作和面积指标计算等方面进行了研究,然后对试验结果进行了精度评定。结果表明,地形图平面位置中误差为4.6 cm,高程中误差为4.2 cm,房角点点位中误差为4.6 cm,建筑物边长中误差为4.5 cm,房屋建筑物面积较差小于城市商品房二级精度面积限差,各项精度均符合国家标准规范要求,该方法用于房屋建筑面积测算是可行的。

Application of UAV tilt photogrammetry in building area measurement of housing construction area

In view of the existing limitations (high field work intensity,low measurement accuracy,and low mapping efficiency) in current measurement of housing construction areas,this paper proposed a more advanced method based on UAV tilt photogrammetry for measuring housing construction areas.Meanwhile,we use this approach to study UAV tilt photogrammetry,real scene 3D modelling,digital orthophoto production,3D digital mapping,map production,calculation of area index,and so on,then the accuracies of test results are assessed.The results show that the errors of topographic map in the plane position,height,the point position of housing corner,the building side length,and the building area are 4.6 cm,4.2 cm,4.6 cm,4.5 cm,and the area difference of the house building is less than the area limit of the secondary precision of the urban commercial house,respectively,these measurement accuracies are up to the national standard.Therefore,we conclude that this method is feasible for housing areas measurements.