According to the present invention, in a specified image position estimating apparatus, for, even if an original image varies in size to vary a size of a mark, detecting the mark in the original image fast and accurately to securely estimate the position of a specified image included in the original image, there are provided a position detection point detecting unit for, in a state where three or more position detection marks, each of which is made such that two or more straight lines intersect with each other or come into contact with each other at one position detection point, are affixed to the original image, detecting the position detection point of each of the position detection marks on the original image and a specified image position estimating unit for estimating the position of the specified image in the original image on the basis of the position detection point.

 
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