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US 12,424,020 B2Granted
Contactless biometric acquisition sensor and method
AssigneeIdemia Identity & Security France
InventorsJoël-Yann Fourre, Alexis Sireta, Jean Beaudet
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Abstract
A contactless biometric sensor, including an upper face above which, in use, a human body part which has dermatoglyphs is positioned, a lighting source configured to light the human body part through the upper face and an imager configured to acquire an image of the human body part through the upper face. The upper face of the sensor is provided with a mask having spatially variable light transmissivity.
Claims15
A contactless biometric sensor, comprising:
- an upper face above which, in use, a human body part which has dermatoglyphs is positioned;
- a lighting source configured to light said human body part through the upper face;
- and
- an imager configured to acquire an image of said human body part through the upper face, wherein
- the upper face is provided with a mask having spatially variable light transmissivity, said mask, in use, introducing onto said human body part a projection, referred to as lighting projection, of a test pattern having a spatial modulation of light intensity, said mask also introducing a projection, referred to as imaging projection, of said pattern into the image acquired by the imager.
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Dependencies are inferred from the claim text.