Best practise
The combination of the double helix with a flat mission pro-
duces very good results with few photos. Programs such as
colmap, Metashape, Meshroom, or Reality Scan achieve amaz-
ing results with this method.
For DJI Fly, the double helix generates a waypoint for each
photo. For DJI Pilot, we use the distance trigger to generate a
photo at specific intervals along the flight path.
The following mission was created with the polygon-grid-POI
mission type from map-creator (DJI-Fly and Mini 5 Pro).
Mission combination
For larger areas, such as this school building complex, several
double helix missions can also be inserted.
AGL missions
To document changes in terrain with a risk of debris flows, it is
advisable to divide the mission into individual waypoints and
use precise AGL. In Switzerland, I use the SwissAlit3D 2m or
0.5m elevation grid resolution. I use my own Open Topo Data
DEM server for this.
Reference model
If you like to compare different way to produce a realistic 3D al-
ways use a reference object. I use a barn near to me.
Polygon Grid POI Mission
The DJIKMZInjector uses the map preview from map-creator to
transfer the KMZ to the DIJ RC 2.