WHITE-LIGHT SPECTRAL BIOMETRIC SENSORS
First Claim
Patent Images
1. A biometric sensor comprising:
- a white-light illumination subsystem disposed to illuminate a purported skin site of an individual with white light;
a detection subsystem disposed to receive light scattered from the purported skin site and comprising a color imager on which the received light is incident; and
a computational unit interfaced with the detection subsystem and having;
instructions for deriving a plurality of spatially distributed images of the purported skin site from the received light with the color imager, the plurality of spatially distributed images corresponding to different volumes of illuminated tissue of the individual; and
instructions for analyzing the plurality of spatially distributed images to perform a biometric function.
2 Assignments
0 Petitions
Accused Products
Abstract
Methods and systems are provided for performing a biometric function. A purported skin site of an individual is illuminated with white light. Light scattered from the purported skin site is received with a color imager on which the received light is incident. Spatially distributed images of the purported skin site are derived and correspond to different volumes of illuminated tissue of the individual. The images are analyzed to perform the biometric function.
-
Citations
27 Claims
-
1. A biometric sensor comprising:
-
a white-light illumination subsystem disposed to illuminate a purported skin site of an individual with white light;
a detection subsystem disposed to receive light scattered from the purported skin site and comprising a color imager on which the received light is incident; and
a computational unit interfaced with the detection subsystem and having;
instructions for deriving a plurality of spatially distributed images of the purported skin site from the received light with the color imager, the plurality of spatially distributed images corresponding to different volumes of illuminated tissue of the individual; and
instructions for analyzing the plurality of spatially distributed images to perform a biometric function. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A method of performing a biometric function, the method comprising:
-
illuminating a purported skin site of an individual with white light;
receiving light scattered from the purported skin site with a color imager on which the received light is incident;
deriving a plurality of spatially distributed images of the purported skin site from the received light with the color imager, the plurality of spatially distributed images corresponding to different volumes of illuminated tissue of the individual; and
analyzing the plurality of spatially distributed images to perform the biometric function. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
-
Specification