This image processing device uses image processing to detect the type of an object included in an image and the position coordinates where the object is present, and comprises: an associated information acquisition unit that acquires a first associated information group including a plurality of items of associated information in which position coordinates and the likelihood of a class among a predetermined plurality of classes are associated, said position coordinates indicating a range in which an object is expected to be present in the image, and said class being associated with said range; a configuration information acquisition unit that acquires configuration information relating to the information processing; an extraction unit that, on the basis of the acquired first associated information group and the acquired configuration information, extracts a second associated information group including at least one of a plausible class and position information corresponding to the plausible class; and an output unit that outputs the extracted second associated information group.