Mobile identity platform
First Claim
1. A system for iris image acquisition, the system comprising:
- a sensor configured to acquire a plurality of images including a first image of an iris of the subject;
a memory; and
at least one processor configured to;
generating a quality metric of the acquired first image for comparison with that of one or more images stored in a memory, the quality metric generated by determining a proportion of the area of the iris that is exposed within the acquired first image and available for biometric matching, and a sharpness or contrast of features in the acquired first image;
responsive to the generated quality metric, storing the acquired first image of the iris in the memory by overwriting an image stored in the memory or including the first image while staying within a predetermined maximum number of images allowed to be stored in the memory, if the quality metric is higher than that of at least one of the one or more images stored in the memory; and
a focus controller component, configured to control a controllable focusing component to focus at a predetermined series of different values within a focus range for acquiring the plurality of images, without any input from measurement of whether an image of the subject to be acquired is in focus or out of focus, and to scan over a range of focus values until the subject departs from a corresponding acquisition region or a predefined number of images having a quality metric exceeding a predetermined threshold is acquired.
2 Assignments
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Accused Products
Abstract
The present disclosure is directed towards a compact, mobile apparatus for iris image acquisition, adapted to address effects of ocular dominance in the subject and to guide positioning of the subject'"'"'s iris for the image acquisition. The apparatus may include a sensor for acquiring an iris image from a subject. A compact mirror may be oriented relative to a dominant eye of the subject, and sized to present an image of a single iris to the subject when the apparatus is positioned at a suitable distance for image acquisition. The mirror may assist the subject in positioning the iris for iris image acquisition. The mirror may be positioned between the sensor and the iris during iris image acquisition, and transmit a portion of light reflected off the iris to the sensor.
267 Citations
12 Claims
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1. A system for iris image acquisition, the system comprising:
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a sensor configured to acquire a plurality of images including a first image of an iris of the subject; a memory; and at least one processor configured to; generating a quality metric of the acquired first image for comparison with that of one or more images stored in a memory, the quality metric generated by determining a proportion of the area of the iris that is exposed within the acquired first image and available for biometric matching, and a sharpness or contrast of features in the acquired first image; responsive to the generated quality metric, storing the acquired first image of the iris in the memory by overwriting an image stored in the memory or including the first image while staying within a predetermined maximum number of images allowed to be stored in the memory, if the quality metric is higher than that of at least one of the one or more images stored in the memory; and a focus controller component, configured to control a controllable focusing component to focus at a predetermined series of different values within a focus range for acquiring the plurality of images, without any input from measurement of whether an image of the subject to be acquired is in focus or out of focus, and to scan over a range of focus values until the subject departs from a corresponding acquisition region or a predefined number of images having a quality metric exceeding a predetermined threshold is acquired. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of iris image acquisition, the method comprising:
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acquiring, by a sensor, a plurality of images including a first image of an iris of the subject; generating, by at least one processor, a quality metric of the acquired first image for comparison with that of one or more images stored in a memory, the quality metric generated by determining a proportion of the area of the iris that is exposed within the acquired first image and available for biometric matching, and a sharpness or contrast of features in the acquired first image; responsive to the generated quality metric, storing the acquired first image of the iris in the memory by overwriting an image stored in the memory or including the first image while staying within a predetermined maximum number of images allowed to be stored in the memory, if the quality metric is higher than that of at least one of the one or more images stored in the memory; and controlling a controllable focusing component to focus at a predetermined series of different values within a focus range for acquiring the plurality of images, without any input from measurement of whether an image of the subject to be acquired is in focus or out of focus, and to scan over a range of focus values until the subject departs from a corresponding acquisition region or a predefined number of images having a quality metric exceeding a predetermined threshold is acquired. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification