METHOD FOR DETECTING A PRESENCE OF A BODY PART CARRYING A FINGERPRINT ON A FINGERPRINT SENSOR

METHOD FOR DETECTING A PRESENCE OF A BODY PART CARRYING A FINGERPRINT ON A FINGERPRINT SENSOR

Method for detecting the presence of a body part carrying an imprint on an imprint sensor comprising a transparent face on which a body part must be placed, an image sensor, situated opposite the transparent face, able to acquire an image of an imprint, a light source for illuminating a body part pl...

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1. Verfasser: DUMONT, Denis
Format: Patent
Sprache:eng ; fre ; ger
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CALCULATING
COMPUTING
COUNTING
PHYSICS
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description Method for detecting the presence of a body part carrying an imprint on an imprint sensor comprising a transparent face on which a body part must be placed, an image sensor, situated opposite the transparent face, able to acquire an image of an imprint, a light source for illuminating a body part placed on the transparent face. The method comprises: switching on the light source; acquiring a multicomponent image with the image sensor, each color component of the multicomponent sensor corresponding to a predefined wavelength range; obtaining, for each color component of said multicomponent image, information representing a signal generated by said image sensor for said color component; comparing said representative items of information with each other and detecting the presence of a body part according to the result of the comparison.
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subjects CALCULATING
COMPUTING
COUNTING
PHYSICS
title METHOD FOR DETECTING A PRESENCE OF A BODY PART CARRYING A FINGERPRINT ON A FINGERPRINT SENSOR
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