Predetermined additional information is superposed as a dot pattern on image information read by an image scanner, and the image information superposed with the additional information is modulated. The modulated information is demodulated and recorded on a recording medium to perform a series of operations,...http://www.google.fr/patents/US6421145?utm_source=gb-gplus-shareBrevet US6421145 - Image processing apparatus and method using image information and additional information or an additional pattern added thereto or superposed thereon
Image processing apparatus and method using image information and additional ...
