The Key Technology of Oblique Photogrammetry of Assembled Buildings by UAV

In order to ensure the disaster control during infrastructure construction and operation, a method of tilt photogrammetry prefabricated buildings using UAV is proposed. A comparative study key steps in 3D process building (structure) was carried out, set morphology based on proposed, were optimized realize automation visualization model construction. The experimental results show that application case school district, error three directions distributed between -4 cm 4 cm, accounting for 74%, -2 2 37%; root mean square calculated be 4.0 3.8 2.8 respectively. an engineering case, size accounted 50%; as 2.3 2.5 3.3 Conclusion. This can not only obtain high-precision models urban complex single buildings, but also meet requirements digital city clear land surface model.