Wednesday, January 21, 2009

What Are Fingerprint Minutiae

Fingerprints are known to be unique to every individual. A Minutiae is defined as: the points of interest in a fingerprint, such as bifurcations (a ridge splitting into two) and ridge endings. Types of ridges:
  • ridge endings - a ridge that ends abruptly
  • ridge bifurcation - a single ridge that divides into two ridges
  • short ridges, island or independent ridge - a ridge that commences, travels a short distance and then ends
  • ridge enclosures - a single ridge that bifurcates and reunites shortly afterward to continue as a single ridge
  • spur - a bifurcation with a short ridge branching off a longer ridge
  • crossover or bridge - a short ridge that runs bbetween two parallel ridges











Relevant papers:
www.research.ibm.com/ecvg/pubs/aws-constructive.pdf
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