The image below is a thumbnail of huge panoramic tour. The tour contains 62 images taken with Zenmuse X5S camera and 25 mm Olympus lens, carried by Matrice 200 aircraft. DNG images have been graded and converted to TIFF format in Photoshop, finally stitched in Autopano Giga software. Resulting panorama is of 3.14 Gigapixel size (47430 x 23715 px), delivering astonishing details. To experience the tour in full glory please click on link below.
The trick is to get properly executed sequence of images. Once this is done, stitching software does the rest or not at all, refusing to cooperate. To do it right one need a drone hovering steady like a rock for 6-8 minutes. Sadly many Inspires can't due to some firmware bug or whatever. Phantoms and Mavics can hover nicely, but their cameras will not deliver that much of detail.
How do you do it? Do you keep the I2 in the same spot and just Yaw round 360', taking pictures edge to edge?
Actually not edge to edge, images must overlap in order to be successfully stitched, but that's the basic idea indeed. It's called "360 deg spherical panorama".