INFORMATION PROCESSING APPARATUS, THREE-DIMENSIONAL POSITION ESTIMATION METHOD, AND A NON-TRANSITORY COMPUTER-READABLE MEDIUM

An information processing apparatus (10) includes: a detection unit (11) configured to detect, using an image and forks for supporting the transport pallet are captured, a shape of fork insertion slots into which the forks are inserted and a shape of the forks; an acquisition unit (12) configured to acquire a depth image showing depth information of the fork insertion slots and depth information of the forks in the image; a correction unit (13) configured to correct, using the shape of the fork insertion slots and the shape of the forks that are detected, the depth information so that the shape of the fork insertion slots and the shape of the forks can be recognized in the depth image; and a position estimation unit (14) configured to estimate three-dimensional positions of the fork insertion slots and three-dimensional positions of the forks based on the depth information.