1. An image processor comprising: a general-purpose classifier configured to detect a predetermined large classification target, the general-purpose classifier including one or a plurality of weak classifiers in which a next-stage weak classifier performs detection processing to a preceding-stage output domain; and a dedicated classifier configured to detect a small classification target which is a subdivision of the large classification target, the dedicated classifier including one or a plurality of weak classifiers in which a next-stage weak classifier performs the detection processing to the preceding-stage output domain; wherein the image processor comprises: an image acquisition part configured to acquire a photographed image photographed by a camera; an image extracting part configured to extract a registered image including a domain assigned by a user from the photographed image; a dedicated classifier performing part configured to cause the dedicated classifier to perform the detection processing to the registered image extracted by the image extracting part; a dedicated classifier selector configured to select the dedicated Classifier having a highest index indicating superiority or inferiority of a detection result; and a classifier generator configured to generate a registered image classifier to detect a target included in the registered image by replacing some weak classifiers included in the dedicated classifier selected by the dedicated classifier selector with the weak classifiers included in the general-purpose classifier.
1. An image processor comprising: a general-purpose classifier configured to detect a predetermined large classification target, the general-purpose classifier including one or a plurality of weak classifiers in which a next-stage weak classifier performs detection processing to a preceding-stage output domain; and a dedicated classifier configured to detect a small classification target which is a subdivision of the large classification target, the dedicated classifier including one or a plurality of weak classifiers in which a next-stage weak classifier performs the detection processing to the preceding-stage output domain; wherein the image processor comprises: an image acquisition part configured to acquire a photographed image photographed by a camera; an image extracting part configured to extract a registered image including a domain assigned by a user from the photographed image; a dedicated classifier performing part configured to cause the dedicated classifier to perform the detection processing to the registered image extracted by the image extracting part; a dedicated classifier selector configured to select the dedicated Classifier having a highest index indicating superiority or inferiority of a detection result; and a classifier generator configured to generate a registered image classifier to detect a target included in the registered image by replacing some weak classifiers included in the dedicated classifier selected by the dedicated classifier selector with the weak classifiers included in the general-purpose classifier. 4. The image processor according to claim 1 , wherein the dedicated classifier performing part outputs a hierarchy, in which the dedicated classifier can successfully detect the target in the registered image, as the index in the case where each dedicated classifier does not output the output domain when the dedicated classifier performing part causes the dedicated classifier to perform the detection processing to the registered image, and the dedicated classifier selector selects the dedicated classifier having a largest number of hierarchies.