Low-Altitude Photogrammetry and Remote Sensing in UAV for Improving Mapping Accuracy

Table 4

Precision analysis of digital orthophoto images in different measurement areas.

Measurement area		In the error	Maximum error	Minimum error	Number of checkpoints	Meets the mapping scale
1^st part of the surveyed area	XY	0.200	0.331	0.068	95	1 : 500
2^nd part of the surveyed area	XY	0.461	0.812	0.092	24	1 : 1000