A method for indexing and searching a plurality of reference fingerprints to determine if a sample fingerprint matches one of the reference fingerprints includes the steps of: determining respective index values for the reference fingerprints and the sample fingerprint based upon characteristics of the...http://www.google.com.tw/patents/US6181807?utm_source=gb-gplus-share專利 US6181807 - Methods and related apparatus for fingerprint indexing and searching
