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Author Topic: help please!!!  (Read 982 times)

bhajipav

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help please!!!
« on: October 30, 2018, 02:25:55 PM »
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?