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Joined: Sep 2020
Posts: 1
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Posted: 02 Sep 2020, 08:56 

Hi,
I'm working on a college project. I have a dataset with over a hundred aerial images with some ground control points obtained with RTK, and my goal is to generate a georeferenced orthomosaic. I processed the photos using the GrandLeez tutorial pipeline, but end up not using the GCPs and get an accuracy of over 2 meters, when it should be at 0.2 meters to fit the Brazilian standards for cartographic products. I think that I can get higher accuracy by using the GCPs. So what processing pipeline should I use to use the GCPs and get better results?

Thanks in advance!


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Joined: Jul 2011
Posts: 1050
Gender: Male
Age: 31
Posted: 08 Sep 2020, 10:57 

Hei!

Copy pasting my Reddit answer ( https://www.reddit.com/r/MicMac/comment ... d_control/ )

The grandLeez dataset uses the onboard GNSS and not GCPs indeed. To use GCPs, you should look at the "Absolute orientation" section of the Historical dataset tutorial on the wiki : https://micmac.ensg.eu/index.php/Histor ... rientation



There's a video on how to use the SaisieAppuis tools here : https://youtu.be/fz7NXFg9770

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