On-screen optical fingerprint capture for user authentication
First Claim
1. A method comprising:
- receiving an image of a fingerprint captured by a camera, the image of the fingerprint being based on light reflected from a fingertip and propagated within a glass layer of a display assembly;
determining feature information from the captured image of the fingerprint;
reducing the amount of feature information through a quantization of the feature information;
generating a histogram associated with the captured image based on the reduced amount of feature information; and
authenticating a user based on the histogram.
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Abstract
Example methods, systems, computer-readable media, and apparatuses for on-screen optical fingerprint capture for user authentication are presented. These allow for the authentication of a fingerprint where the fingerprint image is propagated in a glass layer before being captured by a camera. In some examples, such propagation can result in multiple fingerprint images resulting from total internal reflection within the glass layer. Feature information can then be determined from the captured image of the fingerprint, which can include multiple fingerprint images. The amount of feature information can then be reduced. A histogram associated with the captured image based on the reduced number of features can be generated, and a user can be authenticated based on the histogram.
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Citations
30 Claims
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1. A method comprising:
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receiving an image of a fingerprint captured by a camera, the image of the fingerprint being based on light reflected from a fingertip and propagated within a glass layer of a display assembly; determining feature information from the captured image of the fingerprint; reducing the amount of feature information through a quantization of the feature information; generating a histogram associated with the captured image based on the reduced amount of feature information; and authenticating a user based on the histogram. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A computing device comprising:
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a non-transitory computer-readable medium; a processor in communication with the non-transitory computer-readable medium; and a display assembly in communication with the processor, the display assembly comprising a glass layer; and a camera comprising an image sensor, the image sensor oriented to receive light propagated within the glass layer of the display assembly; and wherein the processor is configured to; receive an image of a fingerprint from the camera, the image based on the propagated light within the glass layer; determine feature information from the captured image of the fingerprint; reduce the amount of feature information through a quantization of the feature information; generate a histogram associated with the captured image based on the reduced amount of feature information; and authenticate a user based on the histogram. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An apparatus comprising:
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means for propagating light within a display assembly; means for capturing an image based on light received from the means for propagating light within a display assembly; means for directing the propagating light onto the means for capturing an image; means for determining feature information from the captured image of a fingerprint; means for reducing the amount of feature information through a quantization of the feature information; means for generating a histogram associated with the captured image based on the reduced amount of feature information; and means for authenticating a user based on the histogram. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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24. A non-transitory computer-readable medium comprising processor-executable instructions configured to cause a processor to:
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receive an image of a fingerprint based on light reflected from a fingertip; determine feature information from the captured image of the fingerprint; reduce the amount of feature information through a quantization of the feature information; generate a histogram associated with the captured image based on the reduced amount of feature information; and authenticate a user based on the histogram. - View Dependent Claims (25, 26, 27, 28, 29, 30)
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Specification