KR101462270B1 - Portable iris recognition device - Google Patents

Abstract

A potable iris recognition device is disclosed. The user friendly iris recognition device of the present invention to achieve a purpose comprises; a light source; an indicator for a monitor which is closed to the light source and includes a duct to limit an irradiation angle of the light source; a lens which refracts indication light irradiated from the indicator for the monitor and focuses a virtual image of the indication light on a predetermined distance; a half mirror which reflects light irradiated from the indicator for the monitor and transmits an image of the left and right eyes of a person to be monitored; a transparent panel which is arranged on the monitor of a housing and the person to be monitored so that the monitor transmits the image of the left and right eyes of the person to be monitored and checks it; a camera which obtains an iris image by photographing the left and right eyes of the person to be monitored to recognize an iris; and an indicator for the person to be monitored which is closely arranged to the camera to check an iris recognition process.

Description

[0001] PORTABLE IRIS RECOGNITION DEVICE [0002]

The present invention relates to an iris recognition apparatus used for verifying an identity or controlling access to a place requiring special permission, more specifically, to guide a user from a iris recognition apparatus to a distance suitable for iris image acquisition, To a portable iris recognition device.

As the interest in biometrics grows in the security market, the market is expanding. The scope of the present invention is in the field of iris recognition in biometrics. Biometric devices respond to various directions that users access. However, the response to all directions is practically difficult because the user's approach direction is so different and diverse depending on the surrounding environment or the user's psychology. Therefore, there is a need for a user access induction method and apparatus capable of improving the recognition rate without giving the user a sense of rejection.

The iris recognition device is a device that reflects the light from the light source to the eye of the iris recognition subject and is incident on the camera, extracts the iris image from the image of the eye, and compares and confirms the iris data in the database .

In the case of an iris recognition device, in addition to being authenticated or approved by an access control device to access a specific area or site, a surveillance person, a soldier, or a police person may confirm the identity of the monitored person.

When the observer identifies the observer as in the latter case, the necessity of the portable iris recognition apparatus becomes significant for easy identification.

In order to accurately capture an iris image, a user must be positioned at a precise position of the iris recognition device. In the conventional portable iris recognition device, the surveillance person monitors the left and right eyes of the observer, It has been necessary to confirm whether or not the image is properly captured, which causes a problem of increase in the unit price of the portable iris recognition apparatus and decrease of the penetration rate.

Korean Patent No. 10-1158501 and No. 10-1158502 disclose a technique for guiding a user to be positioned at an accurate position using two indicators. However, while watching the indicator on the monitor side in the portable iris recognition apparatus, And does not disclose a technique for guiding a user to be positioned at an accurate position.

Therefore, by capturing the binocular image of the monitored person at a predetermined working distance by using the monitor indicator without using the TFT-LCD, the portable iris recognition device can be reduced in weight and a new portable iris recognition device The necessity of

An object of the present invention is to obtain a lightweight portable iris recognition apparatus and a highly reliable image of a monitored iris by capturing a binocular image of a monitored person at a predetermined working distance by using a monitor indicator without a TFT-LCD.

It is also an object of the present invention to use a five-pointed cross-shaped indicator and a horizontal / vertical guide line as a supervisory indicator to prompt the supervisor to the monitored area more quickly.

It is another object of the present invention to solve the problem caused by the height difference between the eyes of the monitor and the subject by adjusting the inclination of the half mirror disposed in the portable iris recognition apparatus.

It is also an object of the present invention to reduce the anxiety of the iris recognition apparatus by the monitor by changing the color according to the progress of the iris recognition using the monitor indicator.

According to an aspect of the present invention, there is provided a portable iris recognition apparatus comprising: a monitor indicator including a light source and a duct adjacent to the light source to limit an irradiation angle of the light source; A lens for refracting the indicator light irradiated from the monitor indicator and causing a virtual image of the indicator light to be formed at a predetermined distance; A half mirror for reflecting the light emitted from the monitor indicator and transmitting the left and right eyes of the monitored person; A transparent panel disposed on a monitor side and a monitored side of the housing so that a surveillant can confirm the left and right eyes of the monitored person; A camera for capturing an iris image by photographing the left eye and the right eye of the monitored person for iris recognition; And a monitor indicator disposed adjacent to the camera so that the monitored person can check the iris recognition process by changing the color according to the progress of the iris recognition process.

At this time, the supervisory indicator may include one status display indicator and four induction indicators disposed adjacent to the upper, lower, right, and left sides of the status display indicator.

In this case, the portable iris recognition apparatus may include a tilt adjusting screw for adjusting the inclination of the half mirror to 35 to 55 degrees.

At this time, the transparent panel disposed on the monitor side may include a horizontal / vertical guide line for guiding the positions of the left and right eyes of the monitor.

In this case, the lens is a Fresnel lens, the focal distance of the Fresnel lens is 65 to 75 mm, the distance between the transparent panel disposed on the monitored side of the housing and the eye of the monitored person is 300 to 350 mm.

According to the present invention, by capturing a binocular image of a monitored person at a predetermined working distance by using a monitor indicator without a TFT-LCD, it is possible to reduce the weight of the portable iris recognizing device and obtain a binocular image of the monitored person with high reliability .

Also, as a monitor indicator, five indicators in the form of a cross and a horizontal / vertical guide line can be used so that the monitor can be guided to the operating area more quickly.

In addition, the inclination of the half mirror disposed in the portable iris recognition device can be adjusted, thereby solving the problem caused by the gaze height difference between the monitor and the subject, and more precise iris image capturing is possible.

In addition, by changing the color according to the progress of the iris recognition process using the monitor indicator, the observer can reduce anxiety about the iris recognition device.

1 is a block diagram illustrating a portable iris recognition apparatus according to the present invention.
2 is another configuration diagram for explaining a portable iris recognition apparatus according to the present invention.
3 is a diagram showing an example of a supervisory indicator light according to the present invention.
FIG. 4A is a view showing an example of a monitor to be viewed by a transparent panel of a portable iris recognition apparatus according to the present invention. FIG.
FIG. 4B is a view showing an example of a viewer viewing the transparent panel of the portable iris recognition apparatus according to the present invention.

The present invention will now be described in detail with reference to the accompanying drawings. Hereinafter, a repeated description, a known function that may obscure the gist of the present invention, and a detailed description of the configuration will be omitted. Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art. Accordingly, the shapes and sizes of the elements in the drawings and the like can be exaggerated for clarity.

The indicator used in the present invention may be a 3-color LED. In this case, since it has various colors of light, it is displayed in the respective light color corresponding to various cases, such as when the monitored person is led to the operation area, when it is too far or near to the iris recognition device, There is an advantage that the monitor can recognize the situation.

The portable iris recognition apparatus according to the present invention may include a USB controller for transmitting an iris image to an image processor and a PC.

The portable iris recognition apparatus includes two adjustment screws for adjusting the tilt of the half mirror to solve the problems caused by the difference in line of sight between the monitor and the subject.

The watcher looks at the transparent panel and directs the watchdog to place the watchdog pointer in the middle of the left and right eyes of the watchdog. The observer watches the observer, changes position according to the induction of the observer, and the camera automatically takes the observer's left and right eyes when the observer's pointer is placed in the center of the observer's left and right eyes.

The portable iris recognition apparatus preferably has an outer size of the housing of 150 mm or less in width, 35 mm or less in thickness, and 80 mm or less in height for portability.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram illustrating a portable iris recognition apparatus according to the present invention.

1, a portable iris recognition apparatus according to the present invention includes a monitor indicator 101, a lens 102, a half mirror 103, transparent panels 121 and 122, a camera 111 and an indicator 112 to be monitored.

The monitor indicator 101 includes a light source and a duct adjacent to the light source to limit the illumination angle of the light source.

At this time, the monitor indicator 101 may include one status display indicator and four indicator indicators disposed adjacent to the top, bottom, left, and right of the status display indicator.

That is, the instruction light irradiated by the monitor indicator 101 may be composed of five circular points arranged in a cross shape.

At this time, each of the status indication indicator and the induction indicator may include a light source and a duct adjacent to the light source to limit an irradiation angle of the light source.

At this time, a conical tube is installed around the light source of the indicator for adjusting the irradiation angle of each indicator. The conical tube material is opaque and preferably absorbs light. The inside of the conical tube is preferably threaded to prevent diffraction and scattering of light at the end of the conical tube. The half mirror side diameter of the conical tube is preferably about the inner diameter of the light source. It is preferable that the conical tube is formed so as to be tapered so that the center radius thereof decreases from the base plate, thereby greatly limiting the irradiation angle.

At this time, the LED colors of the status display indicator and the induction indicator may be different from each other.

The lens 102 refracts the directing light emitted from the monitor indicator 101 so that the virtual image of the directing light is formed at a predetermined distance.

At this time, the lens 102 may use a Fresnel lens so that the virtual image of the instruction light can be formed more clearly.

At this time, when the monitored person 131 is guided to the working distance, the virtual image of the instruction light can be formed at the center of the left eye and the right eye of the monitored person 131.

In this case, the focal length of the Fresnel lens may be 65 to 75 mm.

In this case, when the monitored object 131 is positioned 300 to 350 mm away from the monitored-side transparent panel 122, the virtual image of the indicator light can be formed at the center of the left eye and right eye of the monitored person 131.

The half mirror 103 reflects the light irradiated from the monitor indicator 101 and transmits the left eye and the right eye of the monitored person 131.

The transparent panels 121 and 122 are disposed on the monitor side and the monitored side of the housing so that the monitor 141 can see the left and right eyes of the monitored person 131 through the transparent panels 121 and 122.

That is, the monitor 141 can view the left and right eye views of the monitored person 131 through the monitor-side transparent panel 121 and the half mirror 103.

In addition, the monitor side transparent panel 121 may be a horizontal / vertical guide line for guiding the positions of the left eye and the right eye of the monitored subject 131.

At this time, the horizontal / vertical guideline is composed of two lines in the horizontal direction and two lines in the vertical direction so that the cross-shaped indicating light of the monitor indicator 101 can be superimposed between the horizontal / vertical guideline.

That is, the monitor 141 can adjust the distance so that the cross-shaped indicator light appears between the eyes of the monitored person 131 after aligning both eyes of the monitored person 131 with the horizontal / vertical guideline.

The camera 111 photographs the left eye and the right eye of the monitored person 131 to acquire an iris image for iris recognition.

At this time, the camera 111 photographs the monitored person 131 when the virtual image of the supervisory instruction light reaches the center of the left eye and the right eye of the monitored person 131.

That is, when the camera 111 photographs when the virtual image of the supervisory instruction light is formed at the center of the left eye and right eye of the monitored person 131, the iris image of the left eye and right eye of the monitored person 131 is captured clearly.

When the camera 111 photographs when the monitored person 131 reaches a proper distance, the monitor 141 aligns the both eyes of the monitored person 131 with the horizontal / vertical guideline, The virtual image of the instruction light is formed at the center of the left eye and the right eye of the monitored subject 131 with a high probability since the distance is adjusted to appear between the eyes of the monitor 131. [

Therefore, the camera 111 automatically captures an image of the iris when the monitored person 131 reaches the appropriate distance.

The monitored indicator 112 is disposed adjacent to the camera so that the monitored person 131 can confirm the iris recognition process.

In this case, the monitored indicator 112 is a status indicator having a color change according to the progress of the iris recognition process, in order to reduce anxiety generated during the iris recognition process by the monitored person 131.

For example, the supervisor indicator 112 may display a red color during induction of the subject 131, and a green color after the iris image capturing.

2 is another configuration diagram for explaining a portable iris recognition apparatus according to the present invention.

Referring to FIG. 2, in order to solve a problem caused by a viewer's gaze position through an acrylic tube and a photographing position difference of a camera, the portable iris recognition apparatus according to the present invention has a slope of an acrylic tube It should be tilted 1 to 5 degrees.

In addition, the portable iris recognition apparatus according to the present invention includes two adjustment screws for adjusting the inclination of the half mirror to solve problems caused by the height difference of the eyesight of the monitor and the subject.

The adjustment screws 201 and 202 adjust the inclination of the half mirror 103 to solve the problem caused by the gaze height difference between the monitor and the monitor.

The inclination of the half mirror can be adjusted by 35 to 55 degrees by means of the adjusting screws 201 and 202.

In addition, the thickness of the monitor side and the transparent panel on the monitor side is preferably 20 mm or more in order to solve the problem caused by the difference in the gaze height of the monitor and the monitor.

The portable iris recognition device according to the present invention includes a main board 221 and a terminal board 222 for controlling the camera 111, the monitor indicator 101 and the indicator 112 to be monitored.

The main board 221 and the terminal board 222 may be a printed circuit board (PCB).

The main board 221 may be connected to the camera 111 and the indicator 112 to be monitored.

The terminal board 222 may be connected to the monitor indicator 101.

At this time, the main board 221 or the terminal board 222 may have communication means for transmitting the iris image to the image processor.

At this time, the communication means can use a universal serial bus (USB).

At this time, the communication means can use wired and wireless communication.

3 is a diagram showing an example of the supervisory indicator light 301, 302, 303 according to the present invention.

3, the supervisory indicator light 301, 302, 303 according to the present invention includes a central state indicating indicator light 301 illuminated from the state indicating indicator, an indicator from the indicator disposed adjacent to the right and left of the state indicating indicator, And two vertical induction indicating lights 303 irradiated from the induction indicator disposed adjacent to the upper and lower sides of the status indicating indicator 302 and the horizontal indicating light 302 illuminated.

That is, the supervisory instruction light 301, 302, 303 may be composed of five circular points arranged in a cross shape.

At this time, horizontal / vertical guide lines 311 and 312 can be shown on the monitor side transparent panel.

In this case, the horizontal guide line 311 may be composed of two lines in the horizontal direction and the vertical guide line 312 may be composed of two lines in the vertical direction.

That is, the observer can see that the transparent panel is divided into nine zones by the horizontal / vertical guide lines 311 and 312.

At this time, the observer observes that the left eye of the monitored person 131 is in the left-hand side of the nine zones divided by the horizontal / vertical guide lines 311 and 312, the right eye of the monitored person 131 is the horizontal / And the monitor indicator light 301, 302, 303 is guided to the center of the left eye and the right eye of the monitored person 131 It is possible to adjust the distance of the monitored object 131 to appear.

When the horizontal guidance indicator light 302 is not located between the horizontal guide lines 311 and is inclined upward or downward, the monitor may adjust the inclination of the half mirror using the adjustment screw so that the horizontal guidance indicator light 302 Can be adjusted to be positioned between the horizontal guide lines 311.

4A is a diagram showing an example of a subject 131 viewed by the transparent panel 122 of the portable iris recognition apparatus according to the present invention.

In FIG. 4A, when the subject 131 looks at the transparent panel 122 of the portable iris recognition apparatus according to the present invention, it can be seen that the left eye and the right eye of his / her own eyes are seen rather than the monitor.

The supervisor 131 can see the supervisory instruction light 401 that is not the supervisor instruction light.

The supervisory indicator light 401 is irradiated from the indicator for the monitor disposed adjacent to the camera for capturing the iris image.

At this time, the supervisory instruction light 401 can change the color according to the progress of the iris recognition process in order to reduce anxiety of the monitored person 131.

For example, the indicator light 401 to be monitored may be colored red when the monitored object 131 is derived, and green after the iris image is captured.

FIG. 4B is a view showing an example of a viewer viewing the transparent panel 121 of the portable iris recognition apparatus according to the present invention.

In FIG. 4B, the monitor can see the left and right eyes of the monitored person 131 through the monitor-side transparent panel 121. FIG.

Further, the supervisor can see the supervisory instruction light 301, 302, 303 formed through the half mirror.

Further, the monitor can see the horizontal / vertical guide lines 311 and 312 shown on the monitor side transparent panel 121.

At this time, the observer observes that the left eye of the monitored person 131 is in the left-hand side of the nine zones divided by the horizontal / vertical guide lines 311 and 312, the right eye of the monitored person 131 is the horizontal / And the monitor indicator light 301, 302, 303 is guided to the center of the left eye and the right eye of the monitored person 131 It is possible to adjust the distance of the monitored object 131 to appear.

101: Watchdog indicator
102: lens
103: Half mirror
111: camera
112: Monitor indicator

Claims (5)

A monitor indicator including a light source and a duct adjacent to the light source to limit the illumination angle of the light source;
A lens for refracting the indicator light irradiated from the monitor indicator and causing a virtual image of the indicator light to be formed at a predetermined distance;
A half mirror for reflecting the light emitted from the monitor indicator and transmitting the left and right eyes of the monitored person;
A transparent panel disposed on a monitor side and a monitored side of the housing so that a surveillant can confirm the left and right eyes of the monitored person;
A camera for capturing an iris image by photographing the left eye and the right eye of the monitored person for iris recognition; And
A controller for changing the color according to the progress of the iris recognition process, and for monitoring the iris recognition process,
Wherein the portable iris recognition apparatus comprises: The method according to claim 1,
The monitor indicator
A status display indicator, and four indicator indicators arranged adjacent to upper, lower, right, and left sides of the status display indicator. The method of claim 2,
The portable iris recognition device
And a tilt adjusting screw for adjusting the tilt of the half mirror to be in a range of 35 to 55 degrees. The method of claim 3,
The transparent panel disposed on the monitor side
And a horizontal / vertical guide line for guiding the positions of the left and right eyes of the monitored person. The method of claim 4,
Wherein the lens is a Fresnel lens, the focal distance of the Fresnel lens is 65 to 75 mm, the distance between the transparent panel disposed on the monitored side of the housing and both eyes of the monitored person is 300 to 350 mm Wherein the iris recognition device is a portable iris recognition device.

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