On Sun, Aug 30, 2009 at 6:48 PM, Venkatraman S <venka...@gmail.com> wrote:
> > > it is very much possible to identify a human being uniquely even against > a > > database of 6 billion biometric records. > > > > > Is it? Can you expatiate plz? > Most of the biometric images are taken at 50 micrometer resolution or less. It is very difficult for two people have similar biometric characteristics at this minute scale. any biometric for that matter, iris, finger prints That being the case, it is only how fast we are able to process the image and find a match against a large database, say covering the entire population of world, with around 6 billion records. Application specific asic chips are available to do this. Purpose built systems with a large no of this ICs working in tandem can find a match against such large database in seconds. Further , the records are also indexed with the basic biometric characteristics ( like right loop , left loop, tented arch etc in case for finger prints) this link has some info on the current state of the science: http://www.shareconnector.com/fbi-lab-processes-600-billion-fingerprint-sets-a-day Regards Subramanian _______________________________________________ To unsubscribe, email ilugc-requ...@ae.iitm.ac.in with "unsubscribe <password> <address>" in the subject or body of the message. http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
