Advice on GCPs versus CPs
I'm new to Drone2Map (but experienced with Pro), using version 2026.1.0.
I've been given access to some existing data I can use for testing, comprising approx 800 images and 5 GCPs, covering a 600 m by 250m area:
I completed the tutorial for 2D products and am now applying the same workflow to my data, creating a DSM and ortho.
I'm unsure of how to split my five known points between GCPs and checkpoints. Any advice? The survey area is a cliff, so there are 2 points on the beach (-1.5m approx elevation) and 3 on the cliff top (45m). Is the lack of points a big problem? I know this is going to take several hours to run so I want to get it right first time as far as possible.
I can feed back to our drone team about the number and arrangement of GCPs used when flying in future, if there are improvements that could be made. Constraints are that we cannot damage crops, so no points inside the fields, and the cliffs are unstable so none there either.
