An image processing apparatus includes an input device for inputting image data representing an original, a discrimination unit for discriminating whether the original includes a predetermined color image, and an output unit for outputting a discrimination result of the discrimination unit. The discrimination...http://www.google.de/patents/US5949903?utm_source=gb-gplus-sharePatent US5949903 - Indentification of a particular color image using distribution, and circuitry for same
