I am using DJI phantom 4 pro, and agisoft software.
The maximum error I can use is about 3cm XY, and 5cm Z.
Of course I put markers around the field with XYZ attributes.
In addition to check what are the "real" coordinates of a building or height of the road, I measures with the total station.
After I used the GSP software I processed the data and compared:
the Z actually was very good (+-2cm)
The XY not good at all (+-15cm).
My questions:
1)what are the parameters of the GSP you would use? (height, overlapping %, etc.)
2)in agisoft after you align the picture- how would you sample the points that you need (for example a building)?
by using orthophoto? or dense cloud?
3)for accurate XY, is it better to build mesh or dem?
Topic: help please!!! (Read 980 times)
