1. An information processing device comprising: an acquiring unit that acquires target information representing a shooting target shown in an image shot by a user and biological information acquired from the user when the image is shot for each plurality of images shot by the user; an extracting unit that extracts biological information corresponding to target information representing the shooting target from the biological information acquired by the acquiring unit for each shooting target; and a specifying unit that specifies the user's emotion for the shooting target using the biological information extracted by the extracting unit.