Unauthorized copy preventing system, unauthorized copy preventing method, unauthorized copy preventing program and computer-readable information recording medium

摘要

An unauthorized copy preventing system for preventing unauthorized copy of an image in an image forming apparatus which carries out image forming, by carrying out predetermined processing on digital image information, includes: a digital signal processor for image processing configured to carry out predetermined image processing on an input image; a digital signal processor for security processing configured to produce an unauthorized copy determination result for determining whether or not unauthorized copy is being carried out on the image having undergone the image processing by the digital signal processor for image processing; and a digital signal processor control device configured to control the digital signal processor for image processing and the digital signal processor for security processing and prevent unauthorized copy.