What is disclosed is a system and method for encoding and decoding data in a color barcode pattern using dot orientation and color separability. The spectral (wavelength) characteristics of the CMY colorants, commonly used in digital printing, and those of RGB sensors are exploited to achieve high capacity...http://www.google.fr/patents/US8100330?utm_source=gb-gplus-shareBrevet US8100330 - Method for encoding and decoding data in a color barcode pattern
Method for encoding and decoding data in a color barcode pattern