I read about some problems that may appear when using Yuneec’s E90 camera. Problems would include changed proportions of the map (for example - whole mapped area being slightly smaller than it sould be), low accuracies, concave shape (when it should be flat), and warnings in the quality report about a big difference between the default camera parameters vs camera parameters calculated from the images themselves.
Now, the solution I have read about are:
- user Arruntus from yuneecpilots forum suggests:
"Step 1, Calibration, optimization of internal parameters -> all prior.
I’m sorry I have it in another language, I think it’s like that in English. You activate all prior and it already gives you the right results."
- user EDB from the same forum: "We have had problems but it was related to the incorrect shutter option being used by the default Pix4D database. In the camera parameters we needed to ensure that the shutter option was set to linear rather than global or fast shutter. We then saved this setting to the database and it is saved for the future. Results are now excellent to GCP’s and check points. Without the rolling shutter correction we were up to 0.5m out. "
Would your experiences confirm this? Perhaps it can be refined even more? What were your experiences with the E90?