FINGERPRINT IMAGE INPUT DEVICE WITH FORGED FINGERPRINT DISCRIMINATION FUNCTION AND BIOLOGICAL DETECTION PROGRAM

PROBLEM TO BE SOLVED: To discriminate whether a subject is biological or not by just changing/adding a part of a constitution of a conventional optical fingerprint image input device. SOLUTION: This device is formed by paying attention that a material (gummy) formed by gelatinizing a gelatin aqueous...

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Bibliographic Details
Main Author FUJII YUSAKU
Format Patent
LanguageEnglish
Published 27.09.2007
Subjects
CALCULATING
COMPUTING
COUNTING
DIAGNOSIS
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
MEDICAL OR VETERINARY SCIENCE
PHYSICS
SURGERY
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Summary:PROBLEM TO BE SOLVED: To discriminate whether a subject is biological or not by just changing/adding a part of a constitution of a conventional optical fingerprint image input device. SOLUTION: This device is formed by paying attention that a material (gummy) formed by gelatinizing a gelatin aqueous solution has form birefringence, for example, two polarizing plates are added to a conventional total reflection type optical fingerprint image input device, a monochrome image-pickup device is changed into a color image pick-up device, a spatial or temporal fluctuation of light receiving intensity is calculated based on fingerprint information entering the image pick-up device, and when the fluctuation exceeds a prescribed threshold, this device discriminates that the subject is the forged fingerprint formed of gummy and when the fluctuation is a prescribed threshold or less, discriminates that the subject is a biological fingerprint. COPYRIGHT: (C)2007,JPO&INPIT
Bibliography:Application Number: JP20060075477