Methods and apparatus for directing the gaze of a user in an iris recognition system
First Claim
1. A system for directing a gaze of a user to one of different locations or positions of an iris biometric acquisition system for accommodating different heights of individuals, the system comprising:
- a visibility limiting device;
a user attention device positioned behind the visibility limiting device relative to a user, the visibility limiting device configured to limit an angular field of view of the user attention device, the visibility limiting device comprising a plurality of horizontal louvers oriented non-parallel to each other towards a preferred location to align the user'"'"'s gaze towards the preferred location when the user is at a predefined operating distance from the visibility limiting device; and
a sensor positioned adjacent to the visibility limiting device relative to the user, the sensor configured to acquire imagery of an iris of the user positioned using the user attention device and the visibility limiting device.
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Abstract
The present disclosure describes systems and methods for directing a gaze of a user to one of different locations or positions of an iris biometric acquisition system for accommodating different heights of individuals. A user attention device may be positioned behind a visibility limiting device, for use in guiding the gaze of the user and positioning an eye of the user with respect to the iris biometric acquisition system. The visibility limiting device may be configured to limit an angular field of view of the user attention device. A sensor may be positioned at, behind or adjacent to the visibility limiting device. The sensor may be configured to acquire imagery of an iris from the eye positioned using the user attention device and the visibility limiting device.
116 Citations
20 Claims
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1. A system for directing a gaze of a user to one of different locations or positions of an iris biometric acquisition system for accommodating different heights of individuals, the system comprising:
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a visibility limiting device; a user attention device positioned behind the visibility limiting device relative to a user, the visibility limiting device configured to limit an angular field of view of the user attention device, the visibility limiting device comprising a plurality of horizontal louvers oriented non-parallel to each other towards a preferred location to align the user'"'"'s gaze towards the preferred location when the user is at a predefined operating distance from the visibility limiting device; and a sensor positioned adjacent to the visibility limiting device relative to the user, the sensor configured to acquire imagery of an iris of the user positioned using the user attention device and the visibility limiting device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An iris biometric acquisition system comprising:
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a mirror to reflect an image of an eye of a user towards the user; a visibility limiting device comprising a plurality of horizontal louvers, disposed between the user and the mirror to limit an angular field of view of the mirror, the plurality of horizontal louvers oriented non-parallel to each other towards a preferred location to align the user'"'"'s gaze towards the preferred location when the user is at a predefined operating distance from the visibility limiting device; and an image sensor to acquire an image of the iris of the user when the iris is within the angular field of view of the mirror. - View Dependent Claims (14, 15)
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16. A method for directing a gaze of a user to one of different locations or positions of an iris biometric acquisition system for accommodating different heights of individuals, the method comprising:
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limiting, by a visibility limiting device positioned between a user attention device and a user, an angular field of view of the user attention device; providing, by the visibility limiting device and the user attention device, guidance to the user to position an iris of the user in accordance with the limited angular field of view, the visibility limiting device comprising a plurality of horizontal louvers oriented non-parallel to each other to align the user'"'"'s gaze towards a preferred location when the user is at a predefined operating distance from the visibility limiting device; and acquiring, by a sensor positioned adjacent to the visibility limiting device relative to the user, imagery of the iris positioned in accordance with the guidance provided by the visibility limiting device and the user attention device. - View Dependent Claims (17, 18, 19, 20)
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Specification