ROOM INFORMATION INFERRING APPARATUS INCLUDING A PERSON DETECTOR AND A PRESENCE MAP GENERATOR, ROOM INFORMATION INFERRING METHOD INCLUDING PERSON DETECTION AND PRESENCE MAP GENERATION, AND AIR CONDITIONING APPARATUS

A room information inferring apparatus that infers information regarding a room has an imaging unit that captures an image of a room that is to be subjected to inferring, a person detector that detects a person in an image captured by the imaging unit, and acquires a position of the person in the room, a presence map generator that generates a presence map indicating a distribution of detection points corresponding to persons detected in a plurality of images captured at different times, and an inferring unit that infers information regarding the room based on the presence map.