Mirror system and method for acquiring biometric data
First Claim
Patent Images
1. A method for acquiring biometric imagery, the method comprising:
- rotating a first reflective device about a first rotational axis, the first reflective device comprising at least a first reflective region and a second reflective region, the first reflective region at least partially asymmetric with respect to the second reflective region about the first rotational axis,rotating a second reflective device about a second rotational axis, the second rotational axis being substantially perpendicular to the first rotational axis, the first reflective device reflecting biometric imagery of a subject that is reflected off the second reflective device, andacquiring, by a sensor, the biometric imagery reflected off the first reflective device as the first reflective device is rotated about the first rotational axis.
4 Assignments
0 Petitions
Accused Products
Abstract
A system and method for obtaining biometric imagery such as iris imagery from large capture volumes is disclosed wherein a substantially rotationally symmetric mirror such as a cone or sphere is rotated at a constant velocity about a central axis.
246 Citations
17 Claims
-
1. A method for acquiring biometric imagery, the method comprising:
-
rotating a first reflective device about a first rotational axis, the first reflective device comprising at least a first reflective region and a second reflective region, the first reflective region at least partially asymmetric with respect to the second reflective region about the first rotational axis, rotating a second reflective device about a second rotational axis, the second rotational axis being substantially perpendicular to the first rotational axis, the first reflective device reflecting biometric imagery of a subject that is reflected off the second reflective device, and acquiring, by a sensor, the biometric imagery reflected off the first reflective device as the first reflective device is rotated about the first rotational axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A system for acquiring biometric imagery, the system comprising:
-
a first reflective device comprising a first rotational axis and at least a first reflective region and a second reflective region, the first reflective region at least partially asymmetric with respect to the second reflective region about the first rotational axis, a second reflective device rotating about a second rotational axis, the second rotational axis being substantially perpendicular to the first rotational axis, the first reflective device reflecting biometric imagery that is reflected off the second reflective device, and a sensor configured to acquire the biometric imagery reflected off the first reflective device as the first reflective device is rotated about the first rotational axis. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
-
-
17. A system for acquiring biometric imagery of a subject, the system comprising:
-
a first reflective device defining a first rotational axis and comprising at least one curved reflective region to reflect biometric imagery; a motor, mechanically coupled to the first reflective device, to rotate the first reflective device at a constant rotational velocity about the first rotational axis; a sensor, in optical communication with the first reflective device, to detect a substantially stationary snapshot of the biometric imagery reflected off the at least one curved reflective region as the motor rotates the first reflective device about the first rotational axis; and a processor, operably coupled to the sensor, to apply an inverse geometric image warping function to the biometric imagery detected by the sensor so as to mitigate stretching and/or deformation of the biometric imagery detected by the sensor.
-
Specification