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NCJ Number: NCJ 084055     Find in a Library
Title: Digital Coding of Single Fingerprints - A New Approach for the Computer Age
Author(s): M K Sparrow
  Journal: Journal of Police Science and Administration  Volume:10  Issue:2  Dated:(June 1982)  Pages:206-217
Date Published: 1982
Page Count: 12
  Annotation: The use of graph theory to develop a system for digital coding of single fingerprints is superior to the spatial approach for comparing fingerprints and is suited to the automation of fingerprint recognition.
Abstract: Graph theory is the mathematical study of patterns and their properties without reference to any metrical information. The method proposed ('fishbone' method) allows the obtaining of 20 pieces of interrelated graphical information on the characteristics of each fingerprint, which are sufficient to identify the print as unique. The information is expressed in a 20-digit code. The fishbone method can be applied to fingerprint arches, records localized information, never runs out, and allows for graphical variation. The coding can be done by hand fairly quickly but is designed to be done by automatic scanners. The precise amount of coding to be done at each area of the print is determined by the type of use to which the codes are to be put. For a national single fingerprint collection, 30 digits from each visible delta and 20 from each core would be ample. For a loop, with one delta and one core, 50 digits would be recorded. For more complex patterns, possibly as many as 100 digits would be required. Graphic illustrations and 18 references are provided.
Index Term(s): Computer aided operations ; Fingerprints ; Fingerprint classification
Country: United States of America
Language: English
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