swoermck
lvl.3
Flight distance : 948996 ft
Germany
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peterscache12 Posted at 9-1 07:34
If all you need it for is a single line path, there is very little improvement. But if you want to create maps in a grid pattern, it is very difficult to use. You end up needing hundreds of waypoints with how DJI Fly is currently set up.
I highly recommend checking out DroneDeploy, Dronelink, or mapsmadeeasy for more info about mapping, it's an interesting use-case for drones!
yesterday I tested a workaround, not perfect but at least I didn't have to create a waypoint for every picture:
- using dronelink, I marked the area I wanted to map (as I was also using my old Mavic Air 2 for comparsion - and the MA2 is supported by dronelink)
- for my settings in dronelinks (front/side overlap 80%), dronelink calculated a mission with 68 pictures in total
- now the tough part: on the DJI RC2 controller, I created a waypoint mission matching as close as possible the path which dronlink created, with Gimbal: -90 degree, speed 4 m/s, flight height: 70m
- And the part which makes matters worse: dji is always smoothing out the path, so I needed more waypoints to mimic the dronelink path:
- for that DJI calculated a flight time of 4min 28sec, in which I had to take 68 photos (calculated by dronelink): but instead of plotting a waypoint for each and every photo, I calculated how often I have to take a photo during the flight: 268 sec total flight time: taking a photo every 4 sec will give a total of 67 photos during the flight - close to the number dronelink calculated for accurate mapping
- now out in the field, I started the Air 3 to the waypoint height (70m), left camera settings at defaults (Auto), put the gimbal down
- and started TIMED SHOTS: set it to take photos every 4 sec (as calculated before), started the timed shots AND THEN started the waypoint mission
- at the end of the mission I stopped TIMED SHOTS - and got all the photos I needed
- And for comparison I let the Mavic Air 2 do the same mission controlled by Dronelink
Result?
- Mavic Air 2 did as instructed by Dronelink, but some photos were a bit blurry (maybe due to the not optimal light conditions?)
- Air 3 photos ALL perfect!
Now the interesting part: will WebODM be able to stich my waypoint photos together?
Perfect!!! No issues at all, and the resulting rendering is almost identical with the one created with pictures from the MA2 (controlled by Dronelink)
And as you can imagine, due to some blurry photos from the MA2 (still not sure why this happened), the result from the Air 3 photos is blowing the MA2 result away!!!
This workaround is maybe not as convenient as drawing a rectangel in Dronelink, but at least you don't have to plot a waypoint for every photo! And for the ones using the Air 3 with the RC-N2 controller and e.g. an iPad, depending on the size of the iPad drawing the mission is maybe easier that way.
Hope this helps!
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