The invention relates to an image data extraction apparatus and an image data extraction method. An image data extraction apparatus includes: storage; and circuitry that, in operation, performs operations including acquiring moving image data from an image-taking apparatus disposed in a movable body, acquiring movement information regarding a movement of at least either the movable body or the image-taking apparatus, and extracting learning image data that is used in learning of an identifier that identifies a physical object in an image from dynamic image data.