The data is broken down into parameters such as a Shape Comparison, Grayscale Comparison, Wavelet Comparison, and Color...http://www.google.es/patents/US7565008?utm_source=gb-gplus-sharePatente US7565008 - Data capture and identification system and process B???squeda avanzada de patentes N???mero de publicaci???nUS7565008 B2Tipo de publicaci???nConcesi???n N???mero de solicitudUS 11/342,094 Fecha