Looking for tips / suggestions on how best to use a drone to help with adding features to OSM

Help and support
1

How should the gimbal be set when taking aerial images by a drone such as the DJI Mavic 4 Pro be set? In the one run I did, I put the gimbal straight down and then used ODM to process the images which worked out but if the gimbal could be set at an angle, then fewer images would be needed to cover a given area.

I also see Help text from ODM that suggest 80% overlap but I’m not sure what that means. Does photo 1 over lap photo 2 by 80%? That isn’t what I did before and it worked out. Or does it mean that photo 2 has 80% overlap from the four photos on the four adjacent sides?

2

Have you asked on the OpenDroneMap forum?

There may be people here who might be able to help you, but drone surveys aren’t really our main focus.

1 Like
3

I just shoot the videos 90 degrees down.

I use ffmpeg to extract photos from the video. So I can choose an overlap in the postprocessing.

4

I have not yet. I thought since my end goal is adding to OSM, I would ask here first.

5

That’s an interesting idea. I think I will try that.

6

I use a DJI Mini 2 to perform surveys that I then use ODM to produce orthophotos with. These are uploaded to OpenAerialMap and used to update OSM. Setting the gimbal off nadir (i.e. -85 degrees or so) is recommended to aid with feature reconstruction in ODM. As suggested the ODM forum is the best place to get info on flight parameters etc.