I extracted a GCP file from my EMLID RS2 and it is in the following format (attached)
Project 2main.zip (774 Bytes)
Pix4d doesn’t accept it like this. Do I need to transform it?
My coordinates have to be like this (???)
4d 452911,285 4332254,121 22,660
Thank you for your message.
Here you can find additional information about the format of the Ground Control Points file:
It should contain four or six columns per line for 3D GCPs and 3 or 5 columns per line for 2D GCPs, and use a comma to separate the columns.
One more question, please …
After generating a Quality report I get a yellow mark at the quality check and Georeferencing, why is that?
The yellow warning is shown in the Quality Report when
GCPs are used and the GCP error is more than 2 times the average GSD.
when no GCPs are used
You can find more information here:
In your case, it seems that the GCP error is between 2 and 4 times the average Ground Sampling Distance (GSD).
To resolve the problem, please read these possible causes with suggested solutions:
Not enough GCPs were used given the size of the project.
Add additional GCPs. A minimum number of 3 GCPs is required but we recommend including at least 5 to 10 GCPs. When the topography of the area is complex adding more GCPs could lead to a more accurate reconstruction.
Accuracy values for GCPs are not properly set .
- If the accuracy of the GCPs is known then it should be entered instead of the default values in the GCP/MTP Manager.
- When using the default accuracy values in projects that are set to imperial (ft) then the GCP accuracy should be adjusted to 0.066.
Poor GCP marking: The quality of GCP marks can be estimated by reviewing the projection error for each GCP shown in the quality report. All projection error values should be less than 1 pixel.
GCPs are not marked on enough images.