[Retracted] The Key Technology of Oblique Photogrammetry of Assembled Buildings by UAV

Table 1

Basic parameters of UAV.

Image sensor	CMOS,4/3”
Camera pixels	20,800,000
Image resolution	4 : 3,5280X3956 6 : 9, 5280X2970
The camera focal length	15 mm
Angle of view (FOV)	72°
Maximum flying height	3000 m
Take-off weight	5.15 kg(big battery)/4.42 kg(small battery)
Maximum flat speed	18 m/s
Maximum flight time	32 min
Operating ambient temperature	From -20 °C to 45°C