POSITIONING APPARATUS AND MOVING BODY

A first calculator calculates a relative position and a relative attitude of a vehicle based on a plurality of images captured by an image capturing apparatus mounted on the vehicle. A second calculator extracts one marker from an image captured by the image capturing apparatus, and calculates an absolute position and an absolute attitude of the vehicle based on a position and an attitude of the one extracted marker. A corrector corrects the relative position and the relative attitude based on the absolute position and the absolute attitude to generate a corrected position and a corrected attitude of the vehicle. The corrector determines whether or not the vehicle is turning, and generates the corrected attitude not using the absolute attitude calculated during a period in which the vehicle is turning, but using only the absolute attitude calculated during a period in which the vehicle is not turning.