I downloaded two Data sets from the Elios 2 indoor inspection drone, to build 3d indoor photogrammetry models. with Pix 4D mapper.
The source of the data was the Flyabitiy website, the company that created the Elios 2.
The models are from indoor spaces, and the pictures have no GPS data.
I use PIX4D Mapper for that modeling because is the recommended software for that process, as both, Flyability an PIX4D clearly state in the webinars.
But I have had problems with all the data sets, as soon as I load the pictures to Pix 4d shows the waring that the pictures have the same geolocation data, and will ignore up to 80% of them. so the result is incomplete.
But when I check the Pix4D models that come with the data set, all the pictures are uploaded and calibrated.
Pedro de Greiff G