Detecting a facial authentication attack
AssigneeLenovo (United States) Inc.
InventorsSean C. Kelly, Koji Kawakita, Yasushi Tsukamoto
Life of this patent
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Abstract
A method for detecting an attack on a facial authentication system is disclosed. The method includes capturing, by an IR camera, a first set of images when an IR illuminator is turned on and a second set of images when the IR illuminator is turned off. The method includes determining a set of exposure difference values between the first set of images and the second set of images and identifying an attack in response to the set of exposure difference values satisfying a first threshold.
Claims20
A method comprising:
- capturing, by an infrared (“IR”) camera, a first set of images when an IR illuminator is turned on and a second set of images when the IR illuminator is turned off;
- determining a set of exposure difference values between the first set of images and the second set of images;
- and
- identifying an attack in response to the set of exposure difference values satisfying a first threshold.
An apparatus comprising:
- a processor;
- and
- a non-transitory computer readable storage medium storing code, the code being executable by the processor to perform operations comprising:
- capturing, by an infrared (“IR”) camera, a first set of images when an IR illuminator is turned on and a second set of images when the IR illuminator is turned off;
- determining a set of exposure difference values between the first set of images and the second set of images;
- and
- identifying an attack in response to the set of exposure difference values satisfying a first threshold.
A program product comprising a non-transitory computer readable storage medium storing code, the code being configured to be executable by a processor to perform operations comprising:
- capturing, by an infrared (“IR”) camera, a first set of images when an IR illuminator is turned on and a second set of images when the IR illuminator is turned off;
- determining a set of exposure difference values between the first set of images and the second set of images;
- and
- identifying an attack in response to the set of exposure difference values satisfying a first threshold.
Dependencies are inferred from the claim text.