Detector, a detection method and detection integrated circuits

A detecting apparatus for detecting a specific image from the input image, in the input image, the region determination means for determining a detection target area where the specific image can exist, the detection target region said region determining means has determined respectively to cover a plurality of comparison target range of fixed size, and a setting unit each matching target range to set the position of each matching target range so as to overlap the other check target range and a predetermined width of said setting means for each matching target range the set, by collating the collation image and image of the comparison target range, and a matching means for detecting the specific image.