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US 10,242,245 B2Granted
System and method of fingerprint anti-spoofing protection using multi-spectral optical sensor array
AssigneeDell Products L.P.
InventorsCharles D. Robison, Maxwell S. Andrews
Life of this patent
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Abstract
Systems and methods for fingerprint anti-spoof protection using a multispectral optical sensor array may include a fingerprint sensor device that may have a fingerprint area sensor, a multi-spectral optical sensor array, and a signal processing device. The fingerprint area sensor may detect a finger in contact with the fingerprint area sensor and may capture a fingerprint sensor image. The multi-spectral optical sensor array may capture spectral reflectance data of the detected finger. The signal processing device may determine authenticity of the detected finger based on the fingerprint sensor image and the spectral reflectance data and provide an authentication result.
Claims18
A fingerprint sensor device, comprising:
- a fingerprint area sensor configured to:
- detect a finger in contact with the fingerprint area sensor;
- and
- capture a fingerprint sensor image of the detected finger;
- a multi-spectral optical sensor array configured to capture spectral reflectance data of the detected finger under controlled illumination conditions;
- and
- a signal processing device configured to:
- collect the fingerprint sensor image of the detected finger from the fingerprint area sensor;
- collect the spectral reflectance data of the detected finger from the multi-spectral optical sensor array during the capture of the fingerprint sensor image of the detected finger;
- compare the spectral reflectance data of the detected finger with each of a plurality of reference spectral profiles associated with a reference finger to determine the reference spectral profile that matches a placement of the detected finger in contact with the fingerprint area sensor, wherein the reference spectral profile is associated with one placement of the reference finger in contact with the fingerprint area sensor;
- perform proportional spectral analysis of the spectral reflectance data of the detected finger and the determined reference spectral profile;
- provide a result of the proportional spectral analysis;
- perform a fingerprint analysis of the fingerprint sensor image of the detected finger with each of a plurality of reference fingerprint templates associated with a reference finger to determine whether a reference fingerprint template matches a placement of the detected finger in contact with the fingerprint area sensor, wherein the reference fingerprint template is associated with one placement of the reference finger in contact with the fingerprint area sensor;
- and
- provide a result of the fingerprint analysis.
12 more elements
A method, comprising:
- detecting, by a fingerprint area sensor, a finger in contact with the fingerprint area sensor;
- capturing, by the fingerprint area sensor, a fingerprint sensor image of the detected finger;
- capturing, by a multi-spectral optical sensor array, spectral reflectance data of the detected finger under controlled illumination conditions;
- collecting, by a signal processing device, the fingerprint sensor image of the detected finger from the fingerprint area sensor;
- collecting, by the signal processing device, the spectral reflectance data of the detected finger from the multi-spectral optical sensor array during the capture of the fingerprint sensor image of the detected finger;
- comparing, by the signal processing device, the spectral reflectance data of the detected finger with each of a plurality of reference spectral profiles associated with a reference finger to determine the reference spectral profile that matches a placement of the detected finger in contact with the fingerprint area sensor, wherein the reference spectral profile is associated with one placement of the reference finger in contact with the fingerprint area sensor;
- performing, by the signal processing device, proportional spectral analysis of the spectral reflectance data of the detected finger and the determined reference spectral profile;
- providing, by the signal processing device, a result of the proportional spectral analysis;
- performing a fingerprint analysis of the fingerprint sensor image of the detected finger with each of a plurality of reference fingerprint templates associated with a reference finger to determine whether a reference fingerprint template matches a placement of the detected finger in contact with the fingerprint area sensor, wherein the reference fingerprint template is associated with one placement of the reference finger in contact with the fingerprint area sensor;
- and
- providing a result of the fingerprint analysis.
8 more elements
Dependencies are inferred from the claim text.