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Eyes image capturing apparatus

An eye image and capture device technology, applied in image data processing, image data processing, ophthalmoscope, etc., can solve the problems of increased possibility, deterioration of image quality, and small eye image capture device

Inactive Publication Date: 2005-11-02
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, when the illuminating light is made to be emitted obliquely greatly, the position of the illuminating device will be separated from the optical axis of the eye image capturing device, and this causes a problem that the lateral width of the entire eye image capturing device has to be increased, and Therefore, the eye image capture device cannot be made smaller
Also, the iris image can be captured under better conditions due to the illuminating light being emitted over a wider area, however, since the illuminating light is emitted more obliquely with respect to the eye, there is a problem of dark parts appearing in the iris Possibility increases, thereby deteriorating the quality of the captured image

Method used

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  • Eyes image capturing apparatus
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Examples

Experimental program
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Effect test

no. 1 example

[0037] According to the first embodiment of the present invention, Figure 1A is the front view of the eye image capture device, Figure 1B is its right view. The eye image capture device of this embodiment is constructed to capture an iris image of a person to be authenticated, and a camera adjustment section 2 is provided at the upper part of the main body case 1 where a capture unit (hereinafter referred to as a camera) is adjusted.

[0038] A half mirror 3 is installed at the front center portion of the camera adjustment section 2 , and a lens (not shown) of the iris capture camera is placed behind the half mirror 3 .

[0039] as in Figure 1B As indicated by the double-headed arrow A in , the camera adjustment part 2 is supported by the shaft 4 in such a way that it can be rotated relative to the main body case 1, and those standing in front of the main body case 1 of the eye image capturing device are to be authenticated person, turns his or her own handle 5 at both en...

no. 2 example

[0057] Figure 7 is a process flowchart illustrating eye image capturing processing performed by the control unit of the eye image capturing device according to the second embodiment of the present invention. Note that the light emission number n used in the following flowcharts is the same as that in the first embodiment.

[0058] First, the person to be authenticated waits to move the eye-catching device to his or her front (step S21), and when the person to be authenticated arrives, the LED number n is set to n=1 (step S22). Then, the light-emitting diode with the light-emitting number n=1 is illuminated (step S23) so as to capture a still image of the iris (step S24). Then make the static image sequence number i of the obtained static image i=n. That is, the serial number of the static image obtained by illuminating the light-emitting diode with n=1 is i=1.

[0059] After the static image is captured, the light emitting diode n=1 is turned off (step S25 ), and next, the...

no. 3 example

[0069] Figure 8 is an exemplary front view of a camera adjustment section according to a third embodiment of the present invention. In the illustrated embodiment, an eye alignment mark 18 is provided at the center of the half mirror 3 at the central portion of the camera adjustment part 2, and three LEDs 19, 20, 21 are provided beside the half mirror 3. Make the central LED 20 emit visible light, and make the upper and lower LEDs 19, 21 emit infrared rays.

[0070]As in the first embodiment, when either of the LEDs 19, 21 is illuminated to capture a still image in which the high brightness area 16 is not superimposed on the iris image 17, if the LED, either the LED 19 or the LED 21, is reflected into the iris portion of the person to be authenticated, it is easy to directly request the person to be authenticated to adjust the direction of his or her own glasses or the angle of his or her face.

[0071] However, even if the illuminated LEDs 19, 21 emit infrared rays to the e...

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PUM

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Abstract

An eye image capturing apparatus includes a capturing unit which captures an eye image of a person to be authenticated, a plurality of illuminating devices which illuminate the eye of the person to be authenticated, and are disposed so as to have different distances with respect to an optical axis of the capturing unit, and a control unit which controls sequentially illuminations of the illuminating devices to capture the eye image at each timing of the illuminations.

Description

technical field [0001] The present invention relates to an eye image capture device used in an authentication system for authenticating a person via a pattern of a person's retina or iris, and more precisely to an eye image capture device with an illumination device, the illumination The device has the ability to illuminate the eye as the object to be captured. Background technique [0002] For example, in an iris authentication system provided at the entrance of a room in order to determine eligibility to enter a room, an image of the eye of a person wishing to enter the room is captured by an eye image capture device for authentication, and part of the iris image is cut out to Extract a large number of characteristics or unique characteristics of this person. Then, the characteristic parameter (quantity) thus extracted is compared and contrasted with the characteristic parameter extracted from the iris image of the registered person who has been authorized to enter the ro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B3/12A61B5/117G06K9/00G06T1/00
CPCA61B5/117G06K9/00604A61B3/1216G06V40/19A61B5/1171
Inventor 生驹贤中井川知由
Owner PANASONIC CORP