A METHOD FOR EVALUATING QUALITY OF IMAGE REPRESENTING A FINGERPRINT PATTERN

A METHOD FOR EVALUATING QUALITY OF IMAGE REPRESENTING A FINGERPRINT PATTERN

A method for evaluating quality of image representing a fingerprint pattern is provided, the method including performing a filtering process on a region of the image including a digital filtering of the selected region successively performed a certain number of times. According to the method, conver...

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Bibliographische Detailangaben
Hauptverfasser: BICHIGOV, VLADIMIR NICOLAEVICH, ZAYTSEV, PAVEL ANATOLIEVICH, MOKSIN, ALEXANDR VLADIMIROVICH, SHAPSHAL, IVAN BORISOVICH
Format: Patent
Sprache:eng ; pol
Schlagworte:
CALCULATING
COMPUTING
COUNTING
HANDLING RECORD CARRIERS
PHYSICS
PRESENTATION OF DATA
RECOGNITION OF DATA
RECORD CARRIERS
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Beschreibung
Zusammenfassung:A method for evaluating quality of image representing a fingerprint pattern is provided, the method including performing a filtering process on a region of the image including a digital filtering of the selected region successively performed a certain number of times. According to the method, convergence of said filtering process is determined, and the image within the region is classified as an image with identifiable pattern if the filtering process is convergent, whereas the image within the region is classified as an image with unidentifiable pattern if the filtering process is nonconvergent. The digital filtering is performed using a filter adapted to at least one of the following local image parameters: curvature of dermal ridges, scale and tilt angle of dermal ridges.