Iris authentication method and device using display information

Patent metadata

Field	Value
Publication number	US-2018012007-A1
Application number	US-201515545066-A
Country	US
Kind code	A1
Filing date	Mar 6, 2015
Priority date	Jan 23, 2015
Publication date	Jan 11, 2018
Grant date	—

Abstract

An electronic device for performing iris authentication, according to various examples of the present invention, can comprise: an image sensor for outputting an image obtained by photographing an eye part; a display for displaying an iris authentication screen image; and a control unit detecting at least a partial region from the captured eye part image so as to perform iris authentication by adjusting display characteristics of the display on the basis of a result obtained by comparing the size of the detected region with the size of a region required for the iris authentication, and various examples are possible.

First claim

1 . An electronic device for performing iris authentication, comprising:
an image sensor that outputs an image obtained by photographing an eye region; a display that displays an iris authentication screen; and a control unit that detects at least a partial region from the image of the photographed eye region and performs the iris authentication by adjusting output characteristics of the display based on a result obtained by comparing a size of the detected at least the partial region with a size of a region required for the iris authentication.

2 . The electronic device as claimed in claim 1 , wherein the output characteristics of the display include a brightness of the display.

3 . The electronic device as claimed in claim 1 , wherein the control unit adjusts the output characteristics of the display by changing at least one of a brightness, a chroma, and a contrast of the image displayed on the display.

4 . The electronic device as claimed in claim 1 , wherein the at least the partial region includes pupil and iris regions of the image of the eye region.

5 . The electronic device as claimed in claim 4 , wherein, when a size of the pupil region is larger than the size of the region required for the iris authentication, the control unit increases a brightness of the display.

6 . The electronic device as claimed in claim 5 , wherein, when the size of the pupil region is larger than the size of the region required for the iris authentication, the control unit increases the brightness of the display to correspond to a ratio of a size of the pupil region to a size of the iris region.

7 . The electronic device as claimed in claim 1 , wherein the control unit determines whether there is a change in a pupil size of the image of the photographed eye region by adjusting the output characteristics of the display, and processes the iris authentication as failed when there is no change in the pupil size.

8 . The electronic device as claimed in claim 1 , further comprising:
a memory that stores object information displayed on a screen at a time of iris registration of a user together with iris information of the user, and maps and stores an application to be executed on an object corresponding to the object information.

9 . The electronic device as claimed in claim 8 , wherein the control unit extracts the iris information and the object information from the image of the photographed eye region, and then executes an application corresponding to the object information when the extracted iris information and object information match registered iris information and object information.

10 . The electronic device as claimed in claim 1 , wherein the control unit determines whether an ambient illuminance is lower than a threshold illuminance using a sensor unit for measuring the ambient illuminance, and adjusts the output characteristics of the display when the ambient illuminance is lower than the threshold illuminance.

11 . A method of performing iris authentication in an electronic device, comprising:
displaying an iris authentication screen; photographing a user's eye region; detecting at least a partial region from an image of the photographed eye region; and performing the iris authentication by adjusting output characteristics of a display based on a result obtained by comparing a size of the detected region with a size of a region required for the iris authentication.

12 . The method of performing iris authentication as claimed in claim 11 , wherein the output characteristics of the display include brightness of the display.

13 . The method of performing iris authentication as claimed in claim 11 , wherein the output characteristics of the display are adjusted by changing at least one of a brightness, a chroma, and a contrast of the image displayed on the display.

14 . The method of performing iris authentication as claimed in claim 11 , wherein the at least the partial region includes pupil and iris regions of the image of the eye region.

15 . The method of performing iris authentication as claimed in claim 11 , wherein the performing the iris authentication by adjusting the output characteristics of the display includes increasing a brightness of the display when a size of the pupil region is larger than the size of the region required for the iris authentication.

16 . The method of performing iris authentication as claimed in claim 11 , further comprising:
determining whether there is a change in a pupil size of the image of the photographed eye region by adjusting the output characteristics of the display; and processing the iris authentication as failed when there is no change in the pupil size.

17 . The method of performing iris authentication as claimed in claim 11 , further comprising:
extracting iris information and object information from the image of the photographed eye region; determining whether the extracted iris information and object information match registered iris information and object information; and executing an application corresponding to the object information when the extracted iris information and object information match the registered iris information and object information.

18 . The method of performing iris authentication as claimed in claim 11 , further comprising:
determining whether an ambient illuminance is lower than a threshold illuminance; and adjusting the output characteristics of the display when the ambient illuminance is lower than the threshold illuminance.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Kim Moon-Soo
• Son Kwang-Sub
• Lee Ki-Huk
• Jeon Bo-Seul
• Han Young-Eun

Classifications

• G06F21/84

  output devices, e.g. displays or monitors · CPC title

• G06F21/32 Primary

  using biometric data, e.g. fingerprints, iris scans or voiceprints · CPC title

• G06F2221/2117

  User registration · CPC title

• G06F21/83

  input devices, e.g. keyboards, mice or controllers thereof · CPC title

• G09G3/3406

  Control of illumination source (illumination devices structurally associated with liquid crystal cells G02F1/1336) · CPC title