1. An image storage processing apparatus, comprising: an image acquisition means for acquiring taken image data imaged at an imaging apparatus unit; a user information acquisition means for acquiring first user information relating to at least one first physical measurement taken from a body of a user of the imaging apparatus unit at a time of taking an image and thereby generating the taken image data, the user of the imaging apparatus unit being a first user; a subject information acquisition means for acquiring, as subject information, an image analysis result of analyzing the taken image data; a storage processing means for recording the taken image data acquired by the image acquisition means, the first user information acquired by the user information acquisition means, and the subject information acquired by the subject information acquisition means in at least one recording medium in such a manner that the taken image data is associated with the first user information and the subject information; and a search processing means for generating one or more search conditions using second user information relating to at least one second physical measurement taken from a body of a second user different from the first user, the at least one second physical measurement being taken at a time of searching, and for using the one or more search conditions to search for image data stored in association with corresponding user information and/or subject information that matches the one or more search conditions, wherein the search processing means is configured to generate the one or more search conditions in response to a determination that the second user is in one of one or more designated psychological states.