1. An image analysis device comprising: at least one processor executing stored instructions to: receive query image data including an image of an object to be searched; determine and identify one or more images similar to the image of the object to be searched, wherein the one or more similar images are selected by a user during a first interactive selection; generate metadata of the query image data using image data and its bibliographic information associated with the selected one or more similar images, the one or more similar images being stored in an image database; calculate a score for each metadata based on a frequency by which each of the metadata appears in the bibliographic information of the image data; determine and identify one or more metadata to be used as a search key, the determination being based on one or more of the calculated score for each metadata and a second interactive selection different from the first interactive selection by the user of the one or more metadata, wherein the one or more metadata of the search key is selected by the user and differently combinable when used; extract one or more of the image data stored in the image database, the extracted image data having the bibliographic information matching with the one or more metadata of the search key; detect, in one or more of the extracted image data, a region including the image of the object; and output a detected result.