DOCUMENT AUTHENTICITY DISCRIMINATING APPARATUS AND METHOD THEREFOR

PROBLEM TO BE SOLVED: To provide a document authenticity discriminating apparatus and a method therefor in which authenticity can be discriminated with high accuracy at the time of discriminating authenticity of a presented document by acquiring picture images making use of a wavelength characterist...

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Bibliographische Detailangaben
Hauptverfasser: YAMADA MASAYUKI, TODA KINYA, HAMAZAKI TOSHIYA, FUJII TORU
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To provide a document authenticity discriminating apparatus and a method therefor in which authenticity can be discriminated with high accuracy at the time of discriminating authenticity of a presented document by acquiring picture images making use of a wavelength characteristic with respect to transmissivity or reflectance of light, and subjecting the acquired picture images to numeric conversion to find feature quantities. SOLUTION: The feature quantities subjecting the wavelength characteristic in respect to transmissivity or reflectance of light to the document are extracted on the basis of the picture images of the document picked up by light sources having a plurality of wavelengths while utilizing the wavelength characteristic, and authenticity of the document is discriminated from these feature quantities. COPYRIGHT: (C)2003,JPO