Provided are: an image acquisition unit (104) that acquires a teacher data generation image photographed by a mobile body; a mobile body information acquisition unit (101) that acquires mobile body information relating to the mobile body, the information being transmitted from a mobile body information transmission device that transmits the mobile body information including attribute information for the mobile body and position information for the mobile body; and a teacher data generation unit (111) that generates teacher data on the basis of the teacher data generation image acquired by the image acquisition unit (104), and the mobile body information acquired by the mobile body information acquisition unit (101).
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