Method for extracting fingerprint feature data using ridge orientation model
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United States of America Patent
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-
Nov 1, 2005
Grant Date -
Apr 24, 2003
app pub date -
Nov 26, 2001
filing date -
Aug 31, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The disclosed invention herein is a method for extracting fingerprint feature data using a ridge orientation model. The fingerprint feature data extracting method includes the steps of inputting a fingerprint image, extracting ridge orientations according to regions, calculating ridge qualities according to regions and separating background region from the fingerprint image, extracting regions having a core and a delta, setting an initial ridge orientation model, calculating a ridge orientation function, and extracting the ridge orientations and the core and delta positions of the fingerprint image.
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