Hi. I have a question related to the accuracy of the BBA process of a nadiral flight using 606 images acquired in a “double grid flight itinerary”.
Once the images were imported into the software, a file containing the image name, the center of projection (COP) tridimensional coordinates calculated in PPK, and standard deviations along three axes was imported using the “Flight Log”.s. While Metashape shows a RMSETot of 15.8 cm, Reality Capture RMSETot is 98.2 cm.
Analysing the vertical RMSE of each GCP appears that they have all the same sign, and almost the same entity, as it was a constant translation error.
What could be the reason? Thank you.
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