n recent years, an unmanned aircraft, such as a drone, that flies in a remotely handled or autonomous manner has been commercialized.
For example, a relatively small unmanned aircraft is utilized due to an advantage that information can be safely and efficiently acquired in
a dangerous area that is hard for a manned aircraft to reach, an accident site or a disaster area in which observation at relatively low altitude is required, and the like.
A camera is built in the drone or the like to attain the object.
