Systems And Methods Of Biometric Analysis With A Specularity Characteristic

• US 20170323167A1
• Filed: 07/27/2017
• Published: 11/09/2017
• Est. Priority Date: 01/12/2016
• Status: Active Grant

• Current Assignee: Princeton Identity Inc.
• Original Assignee: Princeton Identity Inc.
• Inventors: Mapen, Barry E., Ackerman, David Alan
• Granted Patent: US 10,643,088 B2
• Time in Patent Office: Days
• CPC Class Codes: G06T 2207/10016 Video; Image sequence
• CPC Class Codes: G06T 2207/10024 Color image
• CPC Class Codes: G06T 2207/10048 Infrared image
• CPC Class Codes: G06T 2207/10152 Varying illumination
• CPC Class Codes: G06T 2207/30041 Eye; Retina; Ophthalmic
• CPC Class Codes: G06T 7/40 Analysis of texture depth or shape recovery from texture G06T7/529
• CPC Class Codes: G06T 7/62 of area, perimeter, diameter or volume
• CPC Class Codes: G06T 7/90 Determination of colour characteristics
• CPC Class Codes: G06T 7/97 Determining parameters from multiple pictures depth or shape recovery from multiple images G06T7/55; stereo camera calibration G06T7/85
• CPC Class Codes: G06V 10/141 Control of illumination
• CPC Class Codes: G06V 20/64 Three-dimensional objects
• CPC Class Codes: G06V 40/166 using acquisition arrangements
• CPC Class Codes: G06V 40/172 Classification, e.g. identification
• CPC Class Codes: G06V 40/19 Sensors therefor
• CPC Class Codes: G06V 40/193 Preprocessing; Feature extraction
• CPC Class Codes: G06V 40/197 Matching; Classification
• CPC Class Codes: G06V 40/45 Detection of the body part being alive
• CPC Class Codes: G06V 40/70 Multimodal biometrics, e.g. combining information from different biometric modalities
• CPC Class Codes: H04N 23/56 provided with illuminating means

Abstract

Exemplary embodiments are directed to biometric analysis systems generally including one or more illumination sources, a camera, and an analysis module. The illumination sources are configured to illuminate at least a portion of a face of a subject. The camera is configured to capture one or more images of the subject during illumination of the face of the subject. The analysis module is configured to analyze the one or more images captured by the camera to determine an indication of liveliness of the subject and prevent spoofing.

Claims

1-99. -99. (canceled)

99. A biometric analysis system, comprising:

an illumination source configured to illuminate an eye of a subject;

a camera configured to capture one or more images of the eye of the subject during illumination of the eye with the first illumination source, the one or more images displaying a specularity characteristic of the eye; and

an analysis module configured to receive as input the one or more images, analyze a brightness and uniformness of the specularity characteristic of the eye, and determine a three-dimensionality of the eye based on the specularity characteristic.

100. The biometric analysis system of claim 99, wherein the specularity characteristic is a specular reflection of a cornea of the subject.

101. The biometric analysis system of claim 99, wherein if the specularity characteristic of the eye is dim and has low uniformness, the analysis module determines that the dim and low uniformness is contraindicative of a live subject and indicative of a facsimile image.

102. The biometric analysis system of claim 99, wherein if the specularity characteristic of the eye is bright and uniform, the analysis module determines that the bright and uniform specularity characteristic is contraindicative of a facsimile image and indicative of a live subject.

103. The biometric analysis system of claim 102, wherein the live subject has a bright and uniform specularity characteristic due to a shiny corneal surface of the eye.

104. The biometric analysis system of claim 99, wherein the illumination source emits a near infrared light.

105. A method of biometric analysis, comprising:

illuminating an eye of a subject with an illumination source of a biometric analysis system;

capturing one or more images of the eye of the subject with a camera of the biometric analysis system during illumination of the eye with the first illumination source, the one or more images displaying a specularity characteristic of the eye; and

receiving as input at an analysis module of the biometric analysis system the one or more images;

analyzing with the analysis module a brightness and uniformness of the specularity characteristic of the eye; and

determining a three-dimensionality of the eye with the analysis module based on the specularity characteristic.

106. The method of claim 105, wherein the specularity characteristic is a specular reflection of a cornea of the subject.

107. The method of claim 105, comprising determining that dim and low uniformness of the specularity characteristic of the eye is contraindicative of a live subject and indicative of a facsimile image.

108. The method of claim 105, comprising determining that bright and uniform specularity characteristic of the eye is contraindicative of a facsimile image and indicative of a live subject.

109. The method of claim 108, wherein the live subject has a bright and uniform specularity characteristic due to a shiny corneal surface of the eye.

110. The method of claim 105, comprising emitting a near infrared light with the illumination source.

111. A non-transitory computer-readable medium storing instructions for biometric analysis that are executable by a processing device, wherein execution of the instructions by the processing device causes the processing device to:

illuminate an eye of a subject with an illumination source of a biometric analysis system;

capture one or more images of the eye of the subject with a camera of the biometric analysis system during illumination of the eye with the first illumination source, the one or more images displaying a specularity characteristic of the eye;

receive as input at an analysis module of the biometric analysis system the one or more images;

analyze with the analysis module a brightness and uniformness of the specularity characteristic of the eye; and

determine a three-dimensionality of the eye with the analysis module based on the specularity characteristic.

112. The non-transitory computer-readable medium of claim 111, wherein the specularity characteristic is a specular reflection of a cornea of the subject.

113. The non-transitory computer-readable medium of claim 111, wherein execution of the instructions by the processing device causes the processing device to determine that dim and low uniformness of the specularity characteristic of the eye is contraindicative of a live subject and indicative of a facsimile image.

114. The non-transitory computer-readable medium of claim 111, wherein execution of the instructions by the processing device causes the processing device to determine that bright and uniform specularity characteristic of the eye is contraindicative of a facsimile image and indicative of a live subject.

115. The non-transitory computer-readable medium of claim 114, wherein the live subject has a bright and uniform specularity characteristic due to a shiny corneal surface of the eye.

116. The non-transitory computer-readable medium of claim 111, wherein execution of the instructions by the processing device causes the processing device to emit a near infrared light with the illumination source.