Other

Sensar, Inc.

Xid Technologies Pte Ltd

Michael Braithwaite

Jason Chaikin

Andrew Philip Govan Date

Mohamed Nabil Moustafa

Samuel P Sadoulet

Jeremy Govier

An illumination and imaging system that is used to obtain enhanced detailed images of objects. The system utilizes a flash element that produces a flash of polychromatic light. A plurality of fiber optic elements are provided that terminate with output ends. At least some of the fiber optic elements are doped to be different colors. Consequently, when each fiber optic element receives the flash of polychromatic light from the flash element, that fiber optic element propagates and filters the polychromatic light to produce colored filtered light. The colored filtered light is directed toward the object being imaged by the camera. The illumination has small points of origin, different color characteristics and simultaneous short flash duration. The combination of colored, directional light sources enables the camera to image very fine details by enhancing surface texture and embedding the image with the color photometric stereo information.

System and method for illuminating and identifying an object

A face authentication or recognition system embodiment includes a processing unit; a flash illumination drive circuit; a flash illumination unit having a flashlamp configured to generate a set of flash illumination pulses; a set of spectral filters configured to pass a set of spectrally filtered flash illumination pulses; a lens; an image sensor configured to receive a set of filtered flash illumination pulses reflected from a subject's face and generate a corresponding facial image dataset; and a memory or data storage device configured to store facial image datasets, enrollment datasets, and query datasets, and which includes a face authentication or recognition module. Spectrally filtered flash illumination pulses have an intensity at least approximately equal to the intensity of ambient sunlight, essentially regardless of an outdoor environment under consideration upon or proximate to the surface of the earth. Spectrally filtered flash illumination reflected from the subject's face can be readily distinguished from ambient light, regardless of the environment in which the subject's facial image was captured, providing surprisingly robust facial authentication and/or recognition performance essentially regardless of ambient lighting conditions.

Systems and methods for face authentication or recognition using spectrally and/or temporally filtered flash illumination

A system and method for capturing an image for biometric identification. To obtain the image, a person stands or moves in a target zone. A flash element provides an incoherent flash of light through an aperture. The flash is filtered to produce filtered light. The filtered light has primary wavelengths no longer than that of blue light. The filtered light is not perceived well by the human eye due to its short duration, color and small point of origin. The intensity of the filtered light at the target area surpasses the intensity of all ambient light. In this manner, a person in the target area will always be properly illuminated, even if that person were backlit by full sunlight. An image of the person is taken with a camera. The image is analyzed to obtain any biometric patterns that can be used for identification.

System and method for illuminating and identifying a person

A system and method for capturing an image of one or both irises. To image an iris, a person stands or moves in a target zone. A flash element provides an incoherent flash of light through an aperture. The flash is filtered to produce filtered light. The filtered light has primary wavelengths in the far red and near infrared portions of the spectrum. The filtered light is not perceived well by the human eye due to short duration, NIR color and small size. The intensity of the filtered light at the target area surpasses the intensity of all ambient light. In this manner, a person's face in the target area will always be properly illuminated, even if that person were backlit by full sunlight. An image of the person's face is taken with a camera. The image of the face is analyzed to obtain any iris pattern information.

System and method for illuminating and imaging the iris of a person

A micro-illuminator suitable for illuminating the iris of the eye of a subject wearing eyeglasses for the purpose of imaging of the iris for identification of the individual comprises an LED having a micro-lens having an opaque portion sized to block light reflected from the substrate of an LED and a lens for focusing light directly emitted by the dies of the LED. The elimination of the reflected light and the focusing of the directly emitted light minimizes the size of specularities reflected from the surfaces of the subject's eyeglasses.

Micro-illuminator for use with image recognition system

A system and method of positioning an eye of a subject at a selected point in space uses a holographic optical element containing indicia. The indicia are selectively visible to a user when the user is outside a volume surrounding the selected point and direct the user toward the volume. This system can be used with a camera to take an image of the eye from which the subject can be identified.

Growing community of inventors

Langhorne, PA, United States of America

Michael Braithwaite