A method of determining one or more color characteristics of a colored microsphere comprising: providing a microarray of microspheres, at least one of which has a color characteristic; capturing the microarray with an electronic color image sensor assembly having a matrix of pixels to produce an electronic...http://www.google.fr/patents/US6947142?utm_source=gb-gplus-shareBrevet US6947142 - Color detection in random array of microspheres
