# US 9,519,821 B2 · Methods and systems for capturing biometric data > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,519,821 B2 - Document ID: US9519821B2 - Status: Granted - Kind: B2 - Application number: 14/748,726 - Filed: 2015-06-24 - Published: 2015-10-15 - Granted: 2016-12-13 - Earliest claimed: 2011-01-20 - Assignees: Daon Holdings Limited - Applicants: Daon Holdings Limited - Inventors: Tevfik Burak Sahin; Michael Peirce; Nicolas Jacques Jean Sezille; Conor Robert White - Web page: https://patentgrep.com/patent/US9519821B2 ## CPC - G06V 40/13: Sensors therefor - G06V 10/24: Aligning, centring, orientation detection or correction of the image - G06V 40/1365: {Matching; Classification} - G06V 40/166: {using acquisition arrangements} - G06V 40/172: {Classification, e.g. identification} - G06V 40/67: {by interactive indications to the user} - H04L 67/10: in which an application is distributed across nodes in the network (software deployment G06F8/60; multiprogramming arrangements G06F9/46) - H04L 63/0861: {using biometrical features, e.g. fingerprint, retina-scan (cryptographic mechanisms or cryptographic arrangements for entity authentication using biological data H04L9/3231)} - G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A method of capturing biometric data is provided that includes activating a security application in a device. The security application is activated by an operator of the device and is configured to cause the device to display an outline image. Moreover, the method includes displaying the outline image in a stationary position on a display of the device, positioning desired biometric data proximate the device such that the desired biometric data appears as a biometric image on the device display, and monitoring the outline and biometric images shown on the device display. Furthermore, the method includes positioning the device and the desired biometric data to better align the outline and biometric images when the outline and biometric images do not align and capturing the desired biometric data from an individual after approximately aligning the outline image with the biometric image. ## Claims ### Claim 1 A method for authenticating users comprising: generating, using a processor, an authentication image from biometric data captured from a user and aligning the authentication image with an enrollment image; determining a region of agreement; and comparing authentication image biometric features within the region of agreement against enrollment image biometric features within the region of agreement to verify the user. ### Claim 2 (depends on 1) A method for authenticating users in accordance with claim 1 further comprising: calculating a transformation; and applying the transformation against the authentication image to align the authentication and enrollment images. ### Claim 3 (depends on 1) A method for authenticating users in accordance with claim 1 further comprising: generating an authentication mask from the captured biometric data; aligning the authentication mask with a user enrollment mask; and comparing the masks to determine the region of agreement. ### Claim 4 (depends on 1) A method for authenticating users in accordance with claim 1 further comprising: generating an authentication mask from the captured biometric data, the authentication mask including a first authentication area of valid biometric data and a second authentication area of invalid biometric data; aligning the authentication mask with a user enrollment mask, the user enrollment mask including a first enrollment area of valid biometric data and a second enrollment area of invalid biometric data; and comparing the authentication mask against the enrollment mask and determining common regions of valid biometric data to be the region of agreement. ### Claim 5 A computer system for authenticating users comprising: a processor; and a memory configured to store enrollment images, said computer system being associated with a network and said memory being in communication with said processor and having instructions stored therein which, when read and executed by said processor cause said computer system to: generate an authentication image from biometric data captured from a user and align the authentication image with an enrollment image; determine a region of agreement; and compare authentication image biometric features within the region of agreement against enrollment image biometric features within the region of agreement to verify the user. ### Claim 6 (depends on 5) A computer system in accordance with claim 5, wherein the instructions when read and executed by said processor further cause said computer system to: calculate a transformation; and apply the transformation against the authentication image to align the authentication and enrollment images. ### Claim 7 (depends on 5) A computer system in accordance with claim 5, wherein the instructions when read and executed by said processor further cause said computer system to: generate an authentication mask from the captured biometric data; align the authentication mask with a user enrollment mask stored in said memory; and compare the masks to determine the region of agreement. ### Claim 8 (depends on 5) A computer system in accordance with claim 5, wherein the instructions when read and executed by said processor further cause said computer system to: generate an authentication mask from the captured biometric data, the authentication mask including a first authentication area of valid biometric data and a second authentication area of invalid biometric data; align the authentication mask with a user enrollment mask stored in said memory, the user enrollment mask including a first enrollment area of valid biometric data and a second enrollment area of invalid biometric data; and compare the authentication mask against the enrollment mask and determine common regions of valid biometric data to be the region of agreement. ### Claim 9 A computer program recorded on a non-transitory computer-readable recording medium included in a computing device for authenticating users, the computer program being comprised of instructions, which when read and executed by the computing device, cause the computing device to: generate an authentication image from biometric data captured from a user and align the authentication image with an enrollment image; determine a region of agreement; and compare authentication image biometric features within the region of agreement against enrollment image biometric features within the region of agreement to verify the user. ### Claim 10 (depends on 9) A computer program in accordance with claim 9 wherein the instructions when read and executed by said computing device, further cause said computing device to: calculate a transformation; and apply the transformation against the authentication image to align the authentication and enrollment images. ### Claim 11 (depends on 9) A computer program in accordance with claim 9 wherein the instructions when read and executed by said computing device, further cause said computing device to: generate an authentication mask from the captured biometric data; align the authentication mask with a user enrollment mask stored in said memory; and compare the masks to determine the region of agreement. ### Claim 12 (depends on 9) A computer program in accordance with claim 9 wherein the instructions when read and executed by said computing device, further cause said computing device to: generate an authentication mask from the captured biometric data, the authentication mask including a first authentication area of valid biometric data and a second authentication area of invalid biometric data; align the authentication mask with a user enrollment mask stored in said memory, the user enrollment mask including a first enrollment area of valid biometric data and a second enrollment area of invalid biometric data; and compare the authentication mask against the enrollment mask and determine common regions of valid biometric data to be the region of agreement.