 - Photos are taken by only airplane type UAVs.
 - Photos are taken by the camera pointing downwards and fixed, but it is not autostabilized.
 - The flying range is restricted by the eastern and southern parts of Ukraine (To the left of the Dnipro River)
 - The image resolution could be from FullHD to 6252*4168. Camera parameters are known: focal length, sensor width, resolution and so on.
 - Altitude is predefined and no more than 1km. The height of the terrain can be neglected.
 - There is NO data from IMU
 - Flights are done mostly in sunny weather
 - We can use satellite providers, but we're limited right now to Google Maps, which could be outdated for some regions
 - Number of photos could be up to 3000, usually in the 500-1500 range
 - During the flight, UAVs can make sharp turns, so that the next photo may be absolutely different from the previous one (no same objects), but it is rather an exception than the rule
 - Processing is done on a stationary computer or laptop with NVidia GPU at least RTX2060, better 3070. (For the UAV solution Jetson Orin Nano would be used, but that is out of scope.)