IMAGE RETRIEVING DEVICE AND IMAGE RETRIEVING METHOD

An image retrieving device includes processing circuitry configured to give a query image that is an image to be identified to a first learning model, acquire a feature vector of the query image from the first learning model, give each of a plurality of gallery images to the first learning model, and acquire a feature vector of each of the gallery images from the first learning model; give the query image to a second learning model, and acquire, from the second learning model, reliability of retrieval when K gallery images having a relatively high possibility of including a subject included in the query image are retrieved from the plurality of the gallery images; retrieve the K gallery images from the plurality of the gallery images; and specify the reliability of retrieval.