Validation of the right to access an object
First Claim
Patent Images
1. A biometric access control device comprising:
- a camera having a field of view;
an illuminator device comprising one or more illuminators that emit light into the field of view;
an access control mechanism coupled to an object and having a locked state that prevents access to the object and an unlocked state that allows access to the object;
an input device;
memory storing program instructions; and
a processor communicatively coupled to the illuminator device, the camera, the access control mechanism, the input device, and the memory, and further communicatively coupled to a database storing a reference iris image for a user validated to access the object, the processor executing the program instructions to;
receive an input signal from the input device;
determine that the input signal comprises a permission to scan an iris of a person in proximity to the object;
align the camera with the iris of the person;
send a first control signal to the illuminator device, the first control signal activating a synchronous emission of light by the one or more illuminators;
send a second control signal to the camera, the second control signal activating a capture of a plurality of digital images by the camera, the capture being synchronous with the synchronous emission of light;
receive the plurality of digital images from the camera;
access the database and retrieve the reference iris image;
determine that a first digital image of the plurality of digital images matches the reference iris image, wherein the first digital image is a low resolution image selected from a plurality of resolutions, and wherein determining the match comprises selecting a low frequency component corresponding to said low resolution image, said low resolution image and said low frequency component being the lowest sufficient to identify coarse iris features; and
transition the access control mechanism from the locked state to the unlocked state.
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Abstract
An iris biometric recognition module includes technology for capturing images of an iris of an eye of a person, whether the person is moving or stationary. The iris biometric recognition technology can perform an iris matching procedure for, e.g., authentication or identity purposes, by comparing a digital iris image to a reference iris image and, if the digital and reference iris images match, transition an object from a locked to an unlocked state to allow access to the object.
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Citations
30 Claims
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1. A biometric access control device comprising:
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a camera having a field of view; an illuminator device comprising one or more illuminators that emit light into the field of view; an access control mechanism coupled to an object and having a locked state that prevents access to the object and an unlocked state that allows access to the object; an input device; memory storing program instructions; and a processor communicatively coupled to the illuminator device, the camera, the access control mechanism, the input device, and the memory, and further communicatively coupled to a database storing a reference iris image for a user validated to access the object, the processor executing the program instructions to; receive an input signal from the input device; determine that the input signal comprises a permission to scan an iris of a person in proximity to the object; align the camera with the iris of the person; send a first control signal to the illuminator device, the first control signal activating a synchronous emission of light by the one or more illuminators; send a second control signal to the camera, the second control signal activating a capture of a plurality of digital images by the camera, the capture being synchronous with the synchronous emission of light; receive the plurality of digital images from the camera; access the database and retrieve the reference iris image; determine that a first digital image of the plurality of digital images matches the reference iris image, wherein the first digital image is a low resolution image selected from a plurality of resolutions, and wherein determining the match comprises selecting a low frequency component corresponding to said low resolution image, said low resolution image and said low frequency component being the lowest sufficient to identify coarse iris features; and transition the access control mechanism from the locked state to the unlocked state. - View Dependent Claims (2, 3, 4, 5, 6, 19, 20, 21, 22)
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7. An iris biometric access control system comprising:
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an iris biometric recognition module that authenticates a person to access an object, the iris biometric recognition module comprising; an iris imager device comprising a lens; an illuminator device; an access control mechanism coupled to the object and having a locked state that prevents access to the object and an unlocked state that allows access to the object; memory storing program instructions; and one or more processors communicatively coupled to the iris imager device, the illuminator device, the access control mechanism, and the memory, the one or more processors executing the program instructions to; align the lens of the iris imager device with an iris of the person; operate the illuminator device to illuminate the iris; operate the iris imager device to produce a digital image of the iris; compare the digital image to a reference iris image; and responsive to a determination that the digital image matches the reference iris image, transition the access control mechanism from the locked state to the unlocked state; wherein the digital image is a low resolution image selected from a plurality of resolutions, and wherein said determining the match comprises selecting a low frequency component corresponding to said low resolution image, said low resolution image and said low frequency component being the lowest sufficient to identify coarse iris features. - View Dependent Claims (8, 9, 10, 11, 12, 13, 17, 23, 24, 25, 26)
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14. A method of authenticating a person to access an object via an iris biometric recognition module comprising program instructions stored in memory and causing one or more processors to execute the steps of:
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aligning a lens of an iris imager device with the iris of the person; operating an illuminator device to illuminate the iris; operating the iris imager device to produce a digital image of the iris; comparing the digital image to a reference iris image; and responsive to a determination that the digital image matches the reference iris image, transitioning an access control mechanism coupled to the object from the locked state, in which the access control assembly prevents the person from accessing an object, to the unlocked state in which the access control assembly allows the person to access the object; wherein the digital image is a low resolution image selected from a plurality of resolutions, and wherein determining the match comprises selecting a low frequency component corresponding to said low resolution image, said low resolution image and said low frequency component being the lowest sufficient to identify coarse iris features. - View Dependent Claims (15, 16, 18, 27, 28, 29, 30)
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Specification