Hello, I have searched the forum but did not find any help. I am having trouble exporting a GCP file from the interface and finding it hard to understand what I am doing wrong All help is appreciated…
So if I understand it correctly you need a minimum of 15 references in 3 (5 ref point in each?) or more photos to create a good/accurate GCP file. So before my missions I marked 6 GCPs on the ground and flew a couple of missions that generated 100 - 200 photos for each mission.
I have a Trimble Juno T41 and did all the measurements for the 6 GCPs with this unit.
First of all I tried looking for high-contrast objects in the mission images and the interface map as suggested, the problem with this is that I usually work were buildnings are few in numbers and also high-contrast objects can be hard to find. But I marked my mission images (5 ref points in each) and then marked them as accurate I could in the map. I did so in three different images from a singles mission.
I assume I am doing something wrong. It did not generate a GCP file.
I would like to mark the GCPs with my dGPS measurements for better accuracy. If I understand it correctly I will need to upload all the mission images were you can see my GCPs on the ground (the more images you mark/ref the better accuracy on the GCP file??).
I will need to mark/lock the refpoints (GCPs) in the interface/mission images and add the coordinates in “custom mode” in the interface map?? Can somebody please give me some tips on how to do this, I do not get this to work - and the most important, is it meant to work like I am trying to explain ??
With this method I will introduce 1 reference point in the gcp interface to each mission image that have the visiable GCP on the ground. Off-course i will need to create atleast 15 different points to 15 different mission images, and as mentioned before - more reference point = better GCP file. Do I undestand this correctly.
Please help a webodm/GCP beginner