KR101336834B1 - Usb iris recognition device - Google Patents

Abstract

The present invention relates to a USB iris recognition device and, more specifically, to a USB iris recognition device which allows only an authorized person to have an access to log in or search materials for a security target device such as a computer and a USB.

Description

USB Iris Identifier {USB IRIS RECOGNITION DEVICE}

The present invention relates to a USB iris recognizer, and more specifically, by using an individual's iris as a digital security key, only an authorized person can securely access (e.g., log in or search for data) a security target device (e.g., computer or USB). It is about USB iris recognizer.

In the future, with the spread of internationally accepted ID cards such as ePassport crew ID international driver's license in the national security level, the adoption of bio-recognition technology will be accelerated in the public sector. It is expected that the market for bio-recognition system will be expanded as a means of user authentication in network environment.

Here, a bio-recognition system refers to "a recognition system that uses measurable physical characteristics or biometric characteristics of an individual to verify the identity or identity of a particular individual in an automated manner."

Considerations for the use of a useful biometric system include:

(1) performance: robustness to the external environment of recognition, accuracy, speed and recognition of the biometrics system

(2) Acceptability (acceptabillity): To acquire the biometric characteristics of the individual who is the subject of bio-recognition, it must be able to accept without great objection.

(3) safety: no risk of theft by unauthorized means

Fingerprints, faces, voices, irises, and the like, have largely been studied in the biological characteristics of humans as bio-recognition targets having the above characteristics.

Among these, the fingerprint recognition method that is currently popularized does not fundamentally satisfy the allowance of item (2) due to the traditional concept of reluctant to recognize the fingerprint. Therefore, when other alternative recognition methods are commercialized, Is expected to be gradually ignored. In addition, the conventional fingerprint recognition method has a large influence on the performance of item (1) due to changes in the surrounding environment such as fingerprint drying and moisture, and thus cannot be considered as a complete biometric recognition system.

On the other hand, the biometric recognition system using the iris is able to perform a more complete and accurate authentication than the fingerprint, and the authentication rate is excellent because there is no fear of damage.

Therefore, when comprehensively reviewing (1) performance, (2) acceptability and (3) safety, a biometric system using iris is most suitable as an authentication means for users, and in the near future It is expected that iris authentication will completely replace the existing password- or fingerprint-based authentication technology.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to securely access a secured device (eg, a computer or USB) by using an individual's iris as a digital security key (eg, login or data). And a USB iris recognizer that dramatically improves processing speed so that personal authentication time can be processed in about 0.5 seconds, which is the world's highest level.

In addition, another object of the present invention is to provide a USB iris recognizer to accurately distinguish the iris of different colors by race to increase the accuracy to 99.99%.

Further, another object of the present invention is to provide a USB iris recognizer that greatly improves user convenience, such as increasing the recognition distance from the camera to the iris to 10 cm or more.

In order to achieve the above object of the present invention, a preferred embodiment of the present invention, the iris recognition unit for recognizing the iris information of the user, and the USB iris is composed of a USB device connected to the iris recognition unit by wireless to exchange data In the recognizer, The iris recognition unit, The camera unit for capturing the iris of the user; A memory unit for automatically detecting a position of the image of the iris and simultaneously storing an automatic iris recognition program for generating a unique iris code using a pattern related to the image of the iris; A wireless transmitter for modulating the personal iris code into a frequency signal for wireless communication and transmitting the modulated iris code to the USB device unit; And a control unit for controlling a data flow between the camera unit, the memory unit, and the wireless transmission unit, wherein the automatic iris recognition program causes the control unit to perform (a) an image of the iris image captured through the camera unit. Analyze the histogram; (b) converting the image of the iris into a binarized binary image based on the threshold obtained by analyzing the histogram; (c) extracting only a binary image relating to the pupil by removing noise from the converted binary image; (d) extract the center coordinates of the pupil using the binary image of the pupil; (e) providing a USB iris recognizer characterized by instructing to generate an iris code unique to an individual by analyzing a pattern of an image of the iris on a basis of a center coordinate of the pupil.

According to a preferred embodiment, the iris recognition unit may further include a charging unit for charging power.

According to a preferred embodiment, the USB device unit, the wireless receiving unit for demodulating the individual-specific iris code that is wirelessly transmitted from the iris recognition unit; A USB memory unit including an iris comparison program for checking whether or not the personal iris code wirelessly transmitted from the iris recognition unit matches a pre-stored personal iris code; A USB terminal electrically connected to a USB port of the computer; And a USB controller for controlling a data flow between the wireless receiver, the USB memory unit, and the USB terminal, wherein the iris comparison program causes the USB controller to: (a) the individual wirelessly transmitted from the iris recognition unit; Instruct to store the unique iris code as user authentication information; (b) instructing to generate, according to an access request signal to the USB memory unit, a signal requesting to input the personal-specific iris code as the user authentication information; (c) After the instruction of (b), it may be instructed to determine whether or not the individual-specific iris code wirelessly transmitted from the iris recognition unit matches the personal-specific iris code as the user authentication information.

In addition, another preferred embodiment of the present invention in order to achieve the object of the present invention, USB iris is configured to include an iris recognition unit for recognizing the iris information of the user, and a USB cable connected to one side of the iris recognition unit by wire In the recognizer, The iris recognition unit, The camera unit for capturing the iris of the user; A memory unit for automatically detecting a position of the image of the iris and simultaneously storing an automatic iris recognition program for generating a unique iris code using a pattern related to the image of the iris; A wired interface unit connected to the USB cable unit; And a control unit for controlling a data flow between the camera unit, the memory unit, and the wired interface unit, wherein the automatic iris recognition program causes the control unit to (a) an image of the iris captured through the camera unit. Analyze the histogram; (b) converting the image of the iris into a binarized binary image based on the threshold obtained by analyzing the histogram; (c) extracting only a binary image relating to the pupil by removing noise from the converted binary image; (d) extract the center coordinates of the pupil using the binary image of the pupil; (e) providing a USB iris recognizer characterized by instructing to generate an iris code unique to an individual by analyzing a pattern of an image of the iris on a basis of a center coordinate of the pupil.

According to a preferred embodiment, the USB cable unit is composed of a cable-type USB cable and a cable-type case that is equipped with a horse-type USB cable, the cable case is to enable data transmission and reception with the wired interface unit of the iris recognition unit through a wire. It may be connected.

According to a preferred embodiment, the memory unit further includes an iris comparison program for checking whether the personal iris code generated by the iris recognition unit matches a pre-stored personal iris code, and the iris The comparison program instructs the control unit to (a) store the personally unique iris code generated by the iris recognition unit as user authentication information; (b) instructing, according to an access request signal to the memory unit, to generate a signal requesting input of the personal iris code as the user authentication information; (c) After the instruction of (b), it may be instructed to determine whether the individual-specific iris code generated by the iris recognition unit matches the personal-specific iris code as the user authentication information.

According to a preferred embodiment, the camera unit may include an infrared filter for filtering visible to ultraviolet rays other than infrared rays.

1A is an external perspective view of a USB iris recognizer according to a first embodiment of the present invention.
FIG. 1B is a view illustrating an operation in which the USB iris recognizer of FIG. 1A is coupled / separated from the iris recognition unit and the USB device unit.
FIG. 1C schematically illustrates the appearance of a USB iris recognizer in a state in which the USB iris recognizer of FIG. 1A is separated into an iris recognizer and a USB device unit; FIG.
2 is a block diagram for explaining the configuration of the USB iris recognizer according to the first embodiment of the present invention.
3 is a flowchart schematically showing an algorithm of an "automatic iris recognition program."
4 is a diagram showing a histogram of an image of an iris calculated by an "automatic iris recognition program".
Fig. 5 shows a binary image in which the image of the iris is binarized by an "automatic iris recognition program".
6 shows a binary image of the pupil calculated by the "automatic iris recognition program".
7 is a view for explaining the process of calculating the center of the pupil "auto iris recognition program".
8 shows the center of the pupil calculated according to the "automatic iris recognition program".
9A is an external perspective view of a USB iris recognizer according to a second embodiment of the present invention;
9B illustrates a side view of the USB iris recognizer of FIG. 9A.
9C is a view schematically illustrating a process in which a USB cable part of the USB iris recognizer of FIG. 9A is detached from an iris recognizer and connected to a USB port of a computer;
Fig. 10 is a block diagram for explaining the configuration of a USB iris recognizer according to a second embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

[First Example  Following USB  Iris Recognizer (1)]

FIG. 1A schematically illustrates an external perspective view of a USB iris recognizer 1 according to a first embodiment of the present invention, and FIG. 1B illustrates an iris recognizer 10 and a USB device unit constituting the USB iris recognizer 1. 20 shows an operation of combining / disconnecting, and FIG. 1C illustrates the appearance of the USB iris recognizer 10 in a state where the USB iris recognizer 1 is separated into the iris recognizer 10 and the USB device unit 20. It is shown schematically.

1A to 1C, the USB iris recognizer 1 according to the first embodiment of the present invention includes an iris recognizer 10 and a USB device 20 that can exchange data with each other through wireless communication. The iris recognition unit 10 and the USB device unit 20 are configured to be physically coupled and separated. The iris recognition unit 10 is an apparatus for performing iris authentication by analyzing the eye recognized through the camera unit 110. In addition, the USB device unit 20 is connected to the USB port of the computer and performs a role of mediating data transmission and reception between the iris recognition unit 10 and the computer and at the same time performs a normal data storage role.

2 is a block diagram for explaining the configuration of the USB iris recognizer 1 according to the first embodiment of the present invention.

As shown in FIG. 2, the USB iris recognizer 1 according to the first embodiment of the present invention includes an iris recognizer 10 and a USB device 20 that can exchange data with each other through wireless communication.

Referring to the block diagram of FIG. 2, the iris recognition unit 10 includes a camera unit 110, a memory unit 120, a wireless transmitter 130, a controller 140, and a charger 150.

The camera unit 110 is a functional unit for capturing an iris of a user and may be configured, for example, as a CCD camera. According to a preferred embodiment, the camera unit 110 may include an infrared filter for filtering visible to ultraviolet rays other than infrared rays.

The memory unit 120 may control the overall operation of the iris recognition unit 10, for example, programs for controlling the iris information registration function, the iris information authentication function, and the "automatic iris recognition program" according to a preferred embodiment of the present invention. 120-1) ".

Here, the automatic iris recognition function automatically tracks the user's iris position, thereby assisting the user in eliminating the hassle of having to adjust the eye position to the iris measurement area of the iris recognition unit (camera unit). to be.

Hereinafter, referring to FIGS. 3 to 8, the "automatic iris recognition program 120-1" applied to the iris recognition unit 10 according to an embodiment of the present invention will be described.

3 is a flowchart schematically showing an algorithm of the "automatic iris recognition program 120-1."

As described above, the "automatic iris recognition program 120-1" applied to the USB iris recognizer 1 according to the first embodiment of the present invention automatically tracks the position of the user's iris so that the user can This program minimizes the inconvenience and time required to adjust eye position to the iris measurable area of the iris recognizer (camera). When using the "automatic iris recognition program 120-1" applied to the present invention, it is possible to significantly improve the personal authentication processing time.

Referring to FIG. 3, the "automatic iris recognition program 120-1" applied to the USB iris recognizer 1 according to the first embodiment of the present invention is controlled by the controller 140 through the camera unit 110. A histogram analysis step (S101) of analyzing a histogram of an image of the iris photographed; A binary image conversion step (S102) of converting an image of the iris into a binarized binary image based on a threshold value obtained through the histogram analysis step; A pupil image extraction step (S103) of extracting only a binary image relating to the pupil by removing noise from the binary image obtained through the binary image conversion step; A pupil center coordinate extraction step (S104) of extracting a center coordinate of the pupil using a binary image of the pupil obtained in the pupil image extraction step; And analyzing the pattern of the image of the iris based on the pupil center coordinates for each predetermined area to instruct an operation of generating an individual iris code (not shown).

4 to 8, the details of each step of the algorithm of the "automatic iris recognition program" are as follows.

(Histogram analysis step ( S101 ))

The "automatic iris recognition program" performs an operation of analyzing a histogram of an image of the iris captured by the camera unit 110.

For example, the image of the iris obtained through the camera unit 110 is a black and white image having 8-bit color information. Therefore, each pixel has an intensity value of 0 to 255.

In order to perform the process of the histogram analysis step S101, the " automatic iris recognition program 120-1 " first performs the operation of calculating histogram data which is the pixel density information. For reference, a histogram refers to a distribution of light and dark values for pixels in an image. For example, the contrast value range of the histogram in 256 gray level images is 0 to 255, and the frequency of each intensity value is represented by the height of the graph by examining the frequency.

Next, the "automatic iris recognition program 120-1" performs an operation of determining a predetermined threshold value from such histogram data.

4 shows a histogram of the image of the iris calculated by the "automatic iris recognition program 120-1". Here, the portion indicated by "A" represents a threshold value determined by the "automatic iris recognition program 120-1."

For example, in the histogram of FIG. 4, the first inflection point is critical in the histogram data because it has a pattern of forming one peak at a small portion (the pupil) of the brightness value and three or more peaks at the high brightness value. It was chosen as the threshold value.

(Binary image conversion step ( S102 ))

Next, the "automatic iris recognition program 120-1" converts an image of the iris into a binarized binary image based on the threshold obtained through the histogram analysis step S101. Perform.

The "auto iris recognition program 120-1" is a pixel density value smaller than the threshold value based on the threshold value obtained in the histogram analysis step S101 to perform the process of the binary image conversion step S102. If the pixel density value is larger than the threshold value of 0, the process of binarization is performed.

For example, if the pixel density value of the (x, y) coordinate is p (x, y) and the threshold is T, the "automatic iris recognition program" is the (x, y) coordinate according to the following equation (1). The pixel density value of is determined.

(1)

(One)

5 shows a binary image binarizing the image of the iris according to the present binary image conversion step (S102).

Pupil Image Extraction Step ( S103 ))

Next, the "automatic iris recognition program 120-1" performs an operation of extracting only a binary image of a pupil through a process of removing noise from a binary image obtained through the binary image conversion step S102.

As illustrated in FIG. 5, the binary image of the iris binarized through the binary image conversion step S102 includes not only a pupil but also noise caused by an eyebrow and a reflected image. Accordingly, the "automatic iris recognition program 120-1" performs the following steps a1 to a5 while examining the binary image of the iris from left to right and from top to bottom.

(a1) step

If the (x, y) pixel has a value of 0, for the pixels on the left (x-1, y) and the top (x, y-1),

Only one of the two neighboring pixels has a label, and the label is given to the (x, y) pixels.

If two neighboring pixels have the same label, then give that label to the (x, y) pixels.

(a2) step

If the neighboring pixels have different labels, the upper neighboring pixels are labeled and the two labels are written as equivalent labels in the equivalent table. If the two neighboring pixels do not have a label, give it a new label and write this label in the equivalence table. Equivalent labels refer to different labels for connecting components, and the set of equivalent labels is called an equivalent set, and the set with the equivalent set as an element is called an equivalence table.

(a3) step

If there are pixels that are not labeled, the flow goes to step (a1).

(a4) step

Find the lowest label for each equivalence set in the equivalence table.

(a5) step

Examine the image and replace each label with the lowest label in the equivalence set.

The algorithm including the steps (a1) to (a5) above requires two irradiation procedures for the binary image of the entire iris. The first survey obtains subregions and finds connectivity between subregions (a1 to a3). In the second survey, equivalent labels are examined and relabeled (steps a4 to a5).

The label with the largest number of pixels among the labeled connecting components is the pupil. Accordingly, the "automatic iris recognition program 120-1" performs an operation of extracting only the pupil by removing the remaining connection components except the connection number having the maximum number of pixels.

6 is a binary image of a pupil obtained as a result of the "automatic iris recognition program" performing the process of steps (a1) to (a5).

Pupil center coordinate extraction step ( S104 ))

Next, the "automatic iris recognition program 120-1" performs an operation of extracting the center coordinates of the pupil using the binary image of the pupil obtained in the pupil image extraction step S103.

Specifically, referring to FIG. 7, the "automatic iris recognition program 120-1" sets the center of the pupil to CP (α, β), sets two points of the boundary point that meets the straight line to P1, P2, The middle point of P1 and P2 is set to P3, and the boundary point of the circle that meets the line at P3 is set to P4. In addition, the "automatic iris recognition program 120-1" sets the distance from P3 to P4 as a, 1/2 as the length of P1 and P2, b as the radius, and r as the radius, and the radius is expressed by the following equation (2). Perform the operation of calculating. In addition, the "automatic iris recognition program" sets a value obtained by adding the y coordinate value in the coordinates of P4 by the radius r obtained by the following equation (2) to the β value in the center coordinates CP (α, β), and CP. The value α in (α, β) is set to be equal to the value of x coordinate in the coordinate of P4.

(2)

(2)

8 is a view showing the center of the pupil extracted according to the pupil center coordinate extraction step (S104). In this figure, the center of the pupil is indicated by a cross.

(Generate your own iris code)

Next, the "automatic iris recognition program 120-1" determines the position of the iris using the pupil center coordinates obtained through the pupil center coordinate extraction step S104, and then analyzes the pattern of the image of the iris into a predetermined region. An operation of generating an individual unique iris code was performed. The unique iris code generated through the process of this step is transmitted to the USB device unit 20 as personal authentication information.

Referring back to FIG. 2, the wireless transmitter 130 performs wireless communication with the USB device unit 20. Wireless communication between the wireless transmitter 130 and the USB device 20 may be, for example, by a Bluetooth communication method or a Zigbee communication method.

The controller 140 may perform an overall operation of the iris recognition unit 10, for example, a registration operation of the user iris image, an authentication processing operation through the user iris image, and a wireless operation between the iris recognition unit 10 and the USB device unit 20. A communication connection operation, an operation for determining whether the iris recognition unit 10 is a power charging mode or an iris recognition mode, and an operation for smoothly driving the respective function units 110, 120, 130, and 150 according to each mode. To control.

The charging unit 150 is a means for charging power to the iris recognition unit 10.

In addition, the charging status display unit 160 is a means for indicating a state in which the iris recognition unit 10 is charged by the charging unit 150.

Next, the USB device unit 20 is a wireless receiving unit 210 for demodulating an individual's own iris code wirelessly transmitted from the iris recognition unit 10, and an individual's own iris wirelessly transmitted from the iris recognition unit 10. A USB memory unit 220-1 including an iris comparison program 220-1 for checking whether the code matches a pre-stored personal unique iris code, and an electrical connection with the USB port 310 of the computer 30. It includes a USB terminal 230 to be connected, and a USB control unit 240 for controlling the data flow between the USB functional units (210, 220, 230).

According to a preferred embodiment, the iris comparison program 220-1 included in the USB memory unit 220 causes the USB controller 240 to authenticate a user's own iris code wirelessly transmitted from the iris recognition unit 10. User authentication information storage step of storing as information, and an iris code request signal generation step of generating a signal for requesting the input of the personal iris code as the user authentication information according to the access request signal to the USB memory unit 220 And after the iris code request signal generation step, to perform a comparison determination step of determining whether or not the individual-specific iris code wirelessly transmitted from the iris recognition unit 10 matches the individual-specific iris code as the user authentication information Can be directed.

[Second Example  Following USB  Iris recognizer (1a)]

9A schematically illustrates an external perspective view of a USB iris recognizer 1a according to a second embodiment of the present invention. FIG. 9B is a view showing a side of the USB iris recognizer 1a, and FIG. 9C is a USB iris recognizer ( The USB cable parts 210a and 220a of 1a are schematically shown in the process of being detached from the iris recognition unit 10a and connected to the USB port of the computer 30.

9A to 9C, the USB iris recognizer 1a according to the second embodiment of the present invention includes an iris recognition unit 10a for registering and recognizing user's iris information, and the iris recognition unit 10a. It is configured to include a USB cable portion 20a connected to one side by wire. The iris recognition unit 10a and the USB cable unit 20a are configured to be physically coupled and separated from each other in a wired state. The iris recognition unit 10a is an apparatus for performing iris authentication by analyzing the eye recognized through the camera unit 110. In addition, the USB cable unit 20a serves to mediate data transmission and reception between the iris recognition unit 10a and a computer. That is, the biggest difference between the USB iris recognizer 1a according to the second embodiment and the USB iris recognizer 1 according to the first embodiment is the USB device unit 20 in the case of the USB iris recognizer 1. In contrast to the data storage role, the USB iris recognizer 1a performs the data storage role in addition to the iris information registration / authentication function.

Fig. 10 is a block diagram for explaining the configuration of the USB iris recognizer 1a according to the second embodiment of the present invention.

As shown in FIG. 10, the USB iris recognizer 1a according to the second embodiment of the present invention has an iris recognition unit 10a and its iris recognition unit 10a that perform registration / authentication and data storage of iris information. It consists of a USB cable portion 20a for connecting to a USB port of the computer.

Referring to the block diagram of FIG. 10, the iris recognition unit 10a includes a camera unit 110, a memory unit 120a, a wired interface unit 130a, and a controller 140a.

The camera unit 110 is a functional unit for capturing an iris of a user and may be configured, for example, as a CCD camera. According to a preferred embodiment, the camera unit 110 may include an infrared filter for filtering visible to ultraviolet rays other than infrared rays.

The memory unit 120a is provided with programs for controlling the overall operation of the iris recognition unit 10a, for example, the iris information registration function, the iris information authentication function, and the USB iris recognizer 1 according to the first embodiment. The "automatic iris recognition program 120-1a" and the "automatic iris comparison program 120-2a" constituted by the same algorithm as applied may be stored.

As described above, the automatic iris recognition function automatically tracks the user's iris position, thereby eliminating the need for the user to adjust the eye position to the iris measurement area of the iris recognition unit (camera unit). It is a function to help.

"Automatic iris recognition program 120-1a" is a histogram analysis step of causing the control unit 140a to analyze the histogram of the image of the iris captured by the camera unit 110, the threshold value obtained through the histogram analysis step A binary image conversion step of converting the image of the iris into a binarized binary image, and extracting only the binary image of the pupil by removing noise from the binary image obtained through the binary image conversion step Extracting pupil center coordinates using the binary image of the pupil obtained in the pupil image extracting step, extracting a pupil center coordinate, and image of the iris based on the pupil center coordinate By generating a unique iris code by analyzing the pattern of each area It may be instructed to perform the operations of the system.

In addition, the "automatic iris comparison program 120-2a" is a user authentication information storage step for the control unit 140a to store the personal iris code generated by the iris recognition unit 10a as user authentication information; An iris code request signal generation step of generating a signal for requesting input of an individual iris code as the user authentication information according to the access request signal to the memory unit 120a, and after the iris code request signal generation step Can be instructed to perform an operation of the comparison determination step of determining whether or not the individual-specific iris code generated by the iris recognition unit 10a matches the personal-specific iris code as the user authentication information.

The "automatic iris recognition program 120-1a" and "automatic iris comparison program 120-2a" applied to the USB iris recognizer 1a according to the second embodiment are the USB iris according to the first embodiment described above. Since the "automatic iris recognition program 120-1" and the "automatic iris comparison program 220-1" applied to the recognizer 1 are almost similar, their detailed description will be omitted.

The wired interface unit 130a forms a connection path with the USB cable unit 20a.

The controller 140a may smoothly drive the overall operation of the iris recognition unit 10a, for example, a registration operation of the user iris image, an authentication processing operation through the user iris image, and each of the functional units 110, 120a, and 130a. Controls the behavior that makes it possible.

Next, the USB cable part 20a is composed of a cable-type USB cable 210a and a cable case 220a in which the cable-type USB cable 210a is accommodated. For example, the cable case 220a may be connected to the wired interface unit 130a to enable data transmission and reception through a wire.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

Claims (7)

In the USB iris recognizer consisting of an iris recognition unit for recognizing the iris information of the user, and a USB device for connecting and communicating data with the iris recognition unit,
The iris recognition unit,
A camera unit for photographing an iris of a user;
A memory unit for automatically detecting a position of the image of the iris and simultaneously storing an automatic iris recognition program for generating a unique iris code using a pattern related to the image of the iris;
A wireless transmitter for modulating the personal iris code into a frequency signal for wireless communication and transmitting the modulated iris code to the USB device unit; And
And a controller for controlling data flow between the camera unit, the memory unit, and the wireless transmitter,
The automatic iris recognition program causes the control unit to:
(a) analyzing a histogram of an image of an iris captured through the camera unit;
(b) converting the image of the iris into a binarized binary image based on the threshold obtained by analyzing the histogram;
(c) extracting only the binary image of the pupil by removing noise including the binary image of the eyebrow from the converted binary image;
(d) extract the center coordinates of the pupil using the binary image of the pupil;
and (e) instructing to generate an iris code unique to an individual by analyzing a pattern of the image of the iris based on a center coordinate of the pupil based on a predetermined area. The method of claim 1,
The iris recognition unit, USB iris recognizer further comprises a charging unit for charging power. The method of claim 1,
The USB device unit,
A wireless receiver for demodulating the individual's own iris code wirelessly transmitted from the iris recognition unit;
A USB memory unit including an iris comparison program for checking whether or not the personal iris code wirelessly transmitted from the iris recognition unit matches a pre-stored personal iris code;
A USB terminal electrically connected to a USB port of the computer; And
And a USB controller for controlling data flow between the wireless receiver, the USB memory unit, and the USB terminal.
The iris comparison program, the USB control unit,
(a) instructing to store the personally unique iris code wirelessly transmitted from the iris recognition unit as user authentication information;
(b) instructing to generate, according to an access request signal to the USB memory unit, a signal requesting to input the personal-specific iris code as the user authentication information;
(c) after the instruction of (b), instructs to determine whether an individual's own iris code wirelessly transmitted from the iris recognition unit matches the individual's own iris code as the user authentication information. USB iris reader. In the iris recognition unit for recognizing the iris information of the user, and the USB iris recognizer comprising a USB cable connected to one side of the iris recognition unit by wire,
The iris recognition unit,
A camera unit for photographing an iris of a user;
A memory unit for automatically detecting a position of the image of the iris and simultaneously storing an automatic iris recognition program for generating a unique iris code using a pattern related to the image of the iris;
A wired interface unit connected to the USB cable unit; And
And a controller for controlling data flow between the camera unit, the memory unit, and the wired interface unit.
The automatic iris recognition program causes the control unit to:
(a) analyzing a histogram of an image of an iris captured through the camera unit;
(b) converting the image of the iris into a binarized binary image based on the threshold obtained by analyzing the histogram;
(c) extracting only the binary image of the pupil by removing noise including the binary image of the eyebrow from the converted binary image;
(d) extract the center coordinates of the pupil using the binary image of the pupil;
and (e) instructing to generate an iris code unique to an individual by analyzing a pattern of the image of the iris based on a center coordinate of the pupil based on a predetermined area. 5. The method of claim 4,
The USB cable unit is composed of a cable-type case that is equipped with a horse-type USB cable and the horse-type USB cable,
And the cable case is connected to the wired interface unit to enable data transmission and reception through the wire. The method of claim 5, wherein
The memory unit further includes an iris comparison program for checking whether the personal iris code generated by the iris recognition unit matches a pre-stored personal iris code,
The iris comparison program, the control unit,
(a) instructing to store the personally unique iris code generated by the iris recognition unit as user authentication information;
(b) instructing, according to an access request signal to the memory unit, to generate a signal requesting input of the personal iris code as the user authentication information;
(c) after the instruction of (b), instructs to determine whether or not the individual unique iris code generated by the iris recognition unit matches the individual unique iris code as the user authentication information. USB iris reader. The method according to claim 1 or 4,
The camera unit, the USB iris recognizer that includes an infrared filter for filtering visible or ultraviolet rays other than infrared.

Images