KR20050041132A - System for identification using living body information and method thereof - Google Patents

Abstract

The present invention stores the biometric information of each individual in the host computer, and by performing the entire process of deriving a result compared to the biometric information input for identity verification only in the host computer, thereby keeping the biometric information securely and identity of each individual The present invention relates to an identification system using biometric information and a method for satisfying credit / credit needs, and the present invention relates to inputting biometric information for initial registration transmitted from a card / identity card / password inquiry device through a communication network. When the biometric information is processed in the pre-processing process, the biometric information is included in the personal information file, and an information database is constructed. When the personal information is input from the card / identity card / password inquiry machine for authentication, the card / identity card / Require biometric information for authentication at bank account checker, and activate biometrics for authentication at card / identity card / passbook When the information is input, the host computer processes the biometric information through a preprocessing process, and compares the biometric information already registered with the biometric information for authentication, and as a result, the registered biometric information and the biometric information for authentication are the same through the communication network. The card / identity card / passbook inquiry is notified of the result that the biometric information is the same, and if the registered biometric information and the authentication biometric information are different, the biometric information is different from the card / identity card / passbook inquiry through the communication network. You will be notified.

Description

Identification system using biometric information and method thereof {System for identification using living body information and method}

The present invention relates to identification using biometric information, and more particularly, to store the biometric information of each individual in a host computer and compare the biometric information with the biometric information input later for identification and derive the results. The present invention relates to an identification system and a method using biometric information that securely stores biometric information and satisfies each individual's identity / credit / trust requirements.

In general, as society develops and develops, there is an urgent need for the identity and credit of each individual.

Currently, the method of verifying the identity according to such a request is primarily using a card / identity card / passbook, password, stamp, signature, etc. Some people use the biometric information of each person to meet the requirements. It is used only as an auxiliary means in terms of phase accuracy.

Cards, ID cards, bank accounts, passwords, stamps, and signatures that are used as identification methods can be stolen by various methods such as lost, stolen, forged, or copied. For example, if the card only knows the password, there is no obstacle in withdrawing cash from the automated machine.

Therefore, in order to solve the problems caused by the existing identification methods, as is well known, identification methods using biometric information have been researched and developed.

In particular, in the case of a smart card, it is possible to store and use personal biometric information in the card, which has a disadvantage in that the biometric information may be exposed and stolen when the user loses his or her smart card.

Generally, biometrics include recognition techniques such as retina, iris, blood vessel, face, voice, and fingerprint, but fingerprint recognition technology is evaluated as the most efficient personal authentication method in terms of reliability and stability. Fingerprints have a unique characteristic that the sweat glands are elevated to form a constant flow, and their forms are different from each other and remain unchanged for life.

In general, a fingerprint recognition technology acquires a fingerprint image from a fingerprint sensor for user authentication, stores feature point information extracted from the acquired fingerprint image as reference information along with personal ID information, and newly inputs this information upon authentication. By comparing the fingerprint data, the identity is verified according to the similarity.

That is, in the conventional biometric (fingerprint recognition) process, a database in which biometric information is encoded by selecting a recognition target is pre-selected, and the code generated by recoding the same to find the same biometric information input at the present time is generated. As a way of searching like the code already stored as a standard, the method of going through the identification process of 1: N and the verification process of 1: 1 is used again.

However, such a conventional method of recognizing biometric information shows a limitation of its recognition ability by numerically encoding a fingerprint having a characteristic of a soft elastic curved surface, and thus there are many reliability problems to commercialize the currently developed recognition process.

Accordingly, the present invention solves all problems arising from the loss, theft, theft, forgery, copying, etc. that can occur when using the conventional card / ID / bankbook, and the like, the reliability generated when recognizing conventional biometric information (fingerprint information) As proposed to solve the problem,

An object of the present invention, by storing the biometric information of each individual in the host computer and by comparing the biometric information that is input later for identity verification and to perform the entire process to derive the results only in the host computer, thereby keeping the biometric information securely The present invention provides an identification system and method using biometric information to satisfy each individual's identity / credit / trust needs.

"Identification system using biometric information" according to the present invention to achieve the above object,

Card that receives the personal information of the card / ID / bankbook, transmits the received personal information to the host side through the communication network, and confirms and displays the identity in response to the biometric information recognition result transmitted from the host side through the communication network / Identification card / passbook checker;

A biometric recognizer which recognizes the biometric information received under the control of the card / identity card / passbook inquiry device and transmits the recognized biometric information to the host through the communication network;

The personal information required for authentication is input from the card / identity card / inquiring machine, and it is determined whether or not the same by comparing the previously stored biometric information corresponding to the received personal information with the currently recognized biometric information transmitted from the biometric reader. And a host computer for transmitting the result to the card / identity card / passbook inquiry through the communication network.

In the above, the host computer,

A data interface unit connected to the communication network to interface personal information data, biometric information, and result information;

A preprocessing unit configured to output the biometric information for registration or the biometric information for authentication transmitted from the data interface unit after the preprocessing process;

An information database for storing the registered biometric information of a specific individual and the personal information of the individual processed by the preprocessing unit and storing the summed file;

When the personal information requesting authentication is transmitted from the data interface unit, the biometric information of the individual is extracted from the information database, and the extracted stored biometric information is compared with the biometric information for authentication obtained by the preprocessing unit to determine the same. A comparison and control unit for transmitting the result to the card / identity card / passbook inquiry unit through the data interface unit;

And a personal information display unit displaying personal information and result information including biometric information output from the comparison and control unit on a screen.

In the above, the pre-processing unit,

It is characterized by performing a preprocessing process such as noise removal, thinning, feature point selection, XY coordinate setting, encoding of input biometric information.

To achieve the above object, "identification method using biometric information" according to the present invention,

A first step of constructing an information database including biometric information in a personal information file after processing the biometric information by a pre-processing process when the initial registration biometric information transmitted from the card / identity card / bankbook inquiry machine is input through a communication network;

After the information database is built, the personal information is input from the card / identity card / password inquiry device for authentication, and if the biometric information is requested for authentication, the biometric information is processed through the preprocessing process if the authentication biometric information is input. Step 2;

Extracting the stored biometric information of the individual requesting authentication from the information database and comparing the extracted registered biometric information with the biometric information for authentication;

As a result of the comparison, if the registered biometric information and the authentication biometric information are the same, the card / ID / passbook inquiry is notified to the card / ID card / passbook inquiring result of the same biometric information, and the registered biometric information and the authentication biometric information may be different. And a fourth step of notifying the card / identity card / passbook inquiry result of the biometric information being different through the communication network.

In the above, the biometric information for registration of the first step,

The number is characterized in that the registration for the arbitrarily set by the person himself.

In the above, the first step of pre-processing,

It performs a process of removing noise of input biometric information, thinning to reproduce an accurate shape of a living body, selecting a feature point, setting XY coordinates, encoding, and the like.

In the above, the third step,

The biometric information for authentication may be rotated and moved up, down, left, and right based on the XY value of registered biometric information, and the two biometric information may be superimposed.

In the above, the fourth step,

If the registered biometric information and the authentication biometric information in the overlapping state and not mutually similar to each other and notifying the result of not being the same person;

When the overlapped state of the registered biometric information and the authentication biometric information is similar to each other, the modified state of the authentication biometric information is calculated, the modified value is compensated, and the registration biometric information and the complete overlapping state are examined. And determining whether two biometric information are identical.

In the above, the compensation of the authentication biometric information,

Dividing the frame data of the biometric information for registration into four quarters and selecting feature points distributed in each equal and central portion;

Dividing the frame data of the authentication biometric information into quarters and selecting feature points distributed over each equal and central portion;

Calculating a distance difference between the feature points of the selected biometric information for registration and the feature points of the biometric information for authentication, and comparing each other;

Compensating by subtracting or subtracting a numerical value according to humidity and pressure change to the distance difference between the feature point of the authentication biometric information based on the distance difference between the feature point of the registration biometric information when the distance difference occurs as a result of the comparison It features.

In the above, the step of determining whether the two biometric information is the same by checking the complete overlap state,

Checking the distribution of the selected feature points in the pre-processing step and determining that they are not the user when the feature point distributions of the two biometric information are different;

If the feature point distributions of the two biometric information are similar, comparing the screen states of the two biometric information as they are, and determining that they are not the same person if they do not match, and determining that they are the same person if the screen states of the two biometric information match. Characterized in that.

Hereinafter, described in detail with reference to the accompanying drawings, preferred embodiments of the present invention according to the technical spirit as described above.

Example 1

1 is a block diagram showing the configuration of an "identification system using biometric information" according to the present invention.

Here, reference numeral 110 receives card / identity card / passbook information and transmits the received information to the host side through the communication network 120, and corresponds to the biometric information recognition result transmitted from the host side through the communication network 120. A card / identity card / passbook inquiry device for confirming and displaying an identity, and the reference numeral 130 recognizes the input biometric information under the control of the card / identity card / password inquiry device 130 and displays the recognized biometric information on the communication network. A biometric identifier is transmitted to the host through the host 120, and reference numeral 140 receives personal information required for authentication from the card / ID / inquiry device 110 and is stored in advance in response to the received personal information. By comparing the biometric information and the currently recognized biometric information transmitted from the biometric reader 130 to determine the same, and determines the result of the communication network 120 It represents a host computer for transmitting to said card / ID card / passbook query unit 110.

In the host computer 140, as shown in FIG.

A data interface unit 141 connected to the communication network 120 to interface personal information data, biometric information, and result information; A preprocessor 142 for outputting the biometric information for registration or the biometric information for authentication transmitted from the data interface unit 141 after the preprocessing process; An information database 143 for storing the registered biometric information of a specific individual and the personal information of the individual processed by the preprocessor 142 and storing the summed file; When the personal information requesting authentication is transmitted from the data interface unit 141, the biometric information of the individual is extracted from the information database 143, and the extracted stored biometric information and the authentication information obtained by the preprocessor 142 are used. A comparison and control unit 144 for comparing the biometric information and determining whether the same is the same, and transmitting the result to the card / identity card / passbook inquiry machine 110 through the data interface unit 141; The personal information display unit 145 is configured to display personal information and result information including biometric information output from the comparison and control unit 144 on a screen.

The operation of the identification system using the biometric information according to the present invention configured as described above will be described in more detail.

First, the user puts his / her own card / identity card / passbook into the card / identity card / passbook inquiry device 110 to be used. The card / identity card / passbook inquiry machine 110 reads the information recorded in the article and transmits the information to the host computer 140 through the communication network 120.

The comparison and control unit 144 of the host computer 140 extracts the personal and biometric information files of the user registered in the information database 143 using the transmitted information, and transmits them to the personal information display unit 145 for screen display. Mark it. In addition, the host computer 140 requests the user to input the biometric information of the user through the communication network 120 to the card / identity card / passbook inquiry device 110.

The card / identity card / passbook inquiry device 110 that is requested to input the biometric information displays a message for inputting the biometric information on a screen, and the user confirming the biometric information is the same biometric part as the biometric information previously registered by the user. For example, when the biometric information is the fingerprint and the thumb of the right hand is registered as the biometric information, the fingerprint of the thumb is input in the same manner).

Then, after recognizing the biometric information (fingerprint information) of the user input from the biometric reader 130, the recognized biometric information is transmitted to the host computer 140 through the communication network 120 as the biometric information for authentication.

The preprocessing unit 142 of the host computer 140 receiving the biometric information for authentication removes the noise included in the biometric information to be input, performs a thinning process of reproducing the accurate shape of the biometric, and selects a feature point. And XY coordinates are set and pre-processing such as encoding is performed to process biometric information for authentication. Thereafter, the image data is compared and transmitted to the controller 145.

The comparison and control unit 144 compares the registration biometric information of the user extracted from the information database 143 with the biometric information for authentication received from the preprocessing unit 142 to determine whether the same.

As a result, the information is transmitted to the card / identity card / passbook inquiry machine 110 through the communication network 120. Accordingly, the card / identity card / passbook inquiry machine 110 performs the following operation based on the result information. Done.

Herein, the present invention allows the user to select and register one or a plurality of the most recognizable or only the fingers of the ten fingers of the fingerprint user. In addition, by using a method of inputting two or more fingers simultaneously or a plurality of fingers sequentially as necessary, reliability improvement and high security are maintained.

In addition, security can be strengthened according to the biometric information and the number of rejections entered at the time of identity verification, and the operator can be given an alarm function, and the tracking function can be verified by storing biometric information of other users. You may.

In addition, when the user does not have a card / ID / bank account, etc., the user can enter the card / ID / bank account number or a number or password assigned only to the user and then check the identity using the same biometric information.

Example 2

3 is a flowchart illustrating an identification method using biometric information according to the present invention.

As shown in the drawing, when the biometric information for initial registration transmitted from the card / identity card / password inquiry device 110 is input through the communication network 120, the biometric information is processed in a personal information file after the biometric information is processed in a preprocessing process. A first step (S102, S104, S106) of constructing an information database, including; When the personal information is input from the card / identity card / passbook inquiry unit 110 for authentication after building the information database, the biometric information is required for authentication, and if the biometric information for authentication is input, the biometric information is pre-processed. A second step of processing (S108, S110, S112, S114, S116); A third step (S118, S120) of extracting stored biometric information of an individual requesting authentication from the information database and comparing the extracted registered biometric information with authentication biometric information; As a result of the comparison, if the registered biometric information and the authentication biometric information are the same, the card / identity card / passbook inquiry device 110 notifies the result of the same biometric information through the communication network, and the registered biometric information and the authentication biometric information are transmitted. If the information is different, the fourth step (S122, S124) to notify the result of the biometric information is different to the card / ID / bank account inquiry through the communication network.

When the "identification method using biometric information" according to the present invention made as described above in more detail as follows.

First, when the biometric information for initial registration transmitted from the card / identity card / password inquiry device 110 is input through the communication network 120 as in step S102, the biometric information is processed by a preprocessing process in step S104, and then in step S106. Construct an information database including biometric information in individual information files.

Here, the biometric information for registration is the fingerprint information with the highest recognition rate, and the number is registered by the person for registration.

In addition, the pretreatment process is as follows.

Since the fingerprint information that is input is likely to be damaged by various noises, wounds, contamination, etc., the input noise is removed, and a thinning process of reproducing the accurate shape of the living body is performed. After dividing one frame data into four parts, we select a number of feature points distributed over each equal and central part.

Next, the XY coordinates to be used as a reference are set, and after performing a process such as encoding, the image data is stored in the information database as image data.

In step S108 after the establishment of the information database, it is checked whether personal information is input from the card / identity card / passbook inquiry machine 110 for authentication. If the personal information is not input as a result of the check, the process moves to step S110 and personal information. Wait for input of.

On the other hand, if personal information is input, the process moves to step S112 to request biometric information for authentication, and in step S114 it is checked whether biometric information for authentication is input.

Thereafter, when the user inputs the biometric information for authentication, the biometric information is processed through the same preprocessing process as the preprocessing process in step S116.

Thereafter, in step S118, the stored biometric information of the individual requesting authentication is extracted from the information database. In step S120, the extracted biometric information is compared with the biometric information for authentication.

In this comparison, the image image of the biometric information for authentication is rotated and moved up / down / left / right on the image image of the registered biometric information based on the XY value of the registered biometric information to overlap the two biometric information. Compare for equality.

If the registered biometric information and the authentication biometric information are the same as the result of the comparison, the mobile station proceeds to step S124 and notifies the card / identity card / passbook inquiry unit 110 that the biometric information is the same through the communication network 120. On the other hand, if the registered biometric information and authentication biometric information is different, go to step S122 to notify the card / ID / bank account checker 110 of the result that the biometric information is different through the communication network 120 do.

Herein, the comparison and determination process of the biometric information will be described in more detail.

First, in order to match the XY value of the registered biometric information (fingerprint image) and the authentication biometric information (fingerprint image), the authentication biometric information is rotated and up / down / left / right based on the XY value of the registered biometric information. It moves to the right to overlap the two biometric information.

Thereafter, when the registered biometric information and the authentication biometric information are not overlapped with each other, the result of not being the same person is notified.

On the contrary, when the overlapping states of the registered biometric information and the authentication biometric information are similar to each other, the modified state of the biometric information for authentication is calculated and the modified value is compensated for.

The compensation process of the authentication biometric information will be described below.

After dividing one frame data of the registration biometric information into four parts, a plurality of feature points distributed in each equal part and the center part are already selected and stored. Therefore, after dividing one frame data of the biometric information for authentication into four equal parts, a plurality of feature points distributed over each equal part and the center part are selected. The distance difference between the feature points of the selected biometric information for registration and the feature points of the biometric information for authentication is calculated and compared with each other. As a result of the comparison, if the distance difference occurs, the numerical value according to the change in humidity and pressure is compensated for the difference in the distance between the feature points of the biometric information for registration based on the difference in the distance between the feature points of the biometric information for registration.

Next, the biometric information for registration and the compensated biometric information are superimposed to examine the complete overlapping state to determine whether the identity is the same. That is, the distribution of the feature points selected in the preprocessing process is checked to determine that the feature points of the two biometric information are not the same person. On the contrary, when the feature point distributions of the two biometric information are similar, the screen states of the two biometric information are compared as they are, and if they do not match, it is determined that they are not the same person. Done.

According to the present invention described above, the host computer stores all the biometric information of each individual in the host computer, and compares the stored biometric information with the input authentication biometric information for identification and derives the results. By only doing so, it is possible to securely store the biometric information and have an effect of achieving accuracy in comparing the biometric information.

In addition, one of the ten fingers of the fingerprint user or the one that only the person knows only can be selected and registered by himself or herself, and if necessary, two or more fingers can be simultaneously or multiple fingers selected. By using the input method sequentially, there is an effect of improving reliability and maintaining high security.

In addition, security can be strengthened according to the biometric information and the number of rejections entered at the time of identity verification, and the operator can be given an alarm function, and the tracking function can be verified by storing biometric information of other users. There is an advantage to it.

In addition, if the user does not have a card / ID / bank account, etc., enter the card / ID / bank account number or a number or password assigned only to you and then use the same biometric information to check whether you It also works.

1 is a block diagram showing the configuration of an identification system using biometric information according to the present invention;

2 is a flowchart illustrating an embodiment configuration of a host computer of FIG. 1;

3 is a flowchart illustrating an identification method using biometric information according to the present invention.

<Explanation of symbols for the main parts of the drawings>

110 ..... Cards / IDs / Account Book Lookups

120 .... Network

130 ..... biometric reader

140 ..... Host Computer

141 ..... data interface

142 ..... Preprocessor

143 ..... Personal Information Database

144 ..... Comparison and Control

145 ..... Personal Information Display

Claims (9)

In identification system using biometric information, Card / ID card / ID card that receives card / ID card / passbook information, transmits the received information to the host side through the communication network, and confirms and displays the identity in response to the biometric information recognition result transmitted from the host side through the communication network. A bank account checker; A biometric recognizer which recognizes the biometric information received under the control of the card / identity card / passbook inquiry device and transmits the recognized biometric information to the host through the communication network; The personal information required for authentication is input from the card / identity card / inquiring machine, and it is determined whether or not the same by comparing the previously stored biometric information corresponding to the received personal information with the currently recognized biometric information transmitted from the biometric reader. And a host computer for transmitting the result to the card / identity card / passbook inquiry through the communication network. The host computer, A data interface unit connected to the communication network to interface personal information data, biometric information, and result information; A preprocessing unit configured to output the biometric information for registration or the biometric information for authentication transmitted from the data interface unit after the preprocessing process; An information database for storing the registered biometric information of a specific individual and the personal information of the individual processed by the preprocessing unit and storing the summed file; When the personal information requesting authentication is transmitted from the data interface unit, the biometric information of the individual is extracted from the information database, and the extracted stored biometric information is compared with the biometric information for authentication obtained by the preprocessing unit to determine the same. A comparison and control unit for transmitting the result to the card / identity card / passbook inquiry unit through the data interface unit; Identification information system using a biometric information, characterized in that consisting of a personal information display unit for displaying the personal information and the result information including the biometric information output from the comparison and control unit on the screen. The method of claim 1, wherein the preprocessing unit, An identification system using biometric information, characterized in that it performs a preprocessing process such as noise reduction of input biometric information, thinning to reproduce an accurate shape of a living body, feature point selection, XY coordinate setting, and encoding. In the identification method using biometric information, A first step of constructing an information database including biometric information in a personal information file after processing the biometric information by a pre-processing process when the initial registration biometric information transmitted from the card / identity card / bankbook inquiry machine is input through a communication network; After the information database is built, the personal information is input from the card / identity card / password inquiry device for authentication, and if the biometric information is requested for authentication, the biometric information is processed through the preprocessing process if the authentication biometric information is input. Step 2; Extracting the stored biometric information of the individual requesting authentication from the information database and comparing the extracted registered biometric information with the biometric information for authentication; As a result of the comparison, if the registered biometric information and the authentication biometric information are the same, the card / ID / passbook inquiry is notified to the card / ID card / passbook inquiring result of the same biometric information, and the registered biometric information and the authentication biometric information may be different. And a fourth step of notifying the card / identity card / passbook inquiry result of the biometric information being different through the communication network. The method of claim 3, wherein the registration biometric information of the first step, The number is identity identification method using biometric information, characterized in that the registration by the user himself for registration. The method of claim 3, wherein the preprocessing of the first step comprises: The identification method using the biometric information, characterized in that the process of removing the noise of the input biometric information, thinning to reproduce the exact shape of the living body, selection of feature points, XY coordinates, encoding. The method of claim 3, wherein the third step, The biometric information identification method of claim 2, wherein the biometric information for authentication is rotated and moved up / down / left / right based on the XY value of the registered biometric information, and the biometric information is superimposed. The method of claim 3, wherein the fourth step, If the registered biometric information and the authentication biometric information in the overlapping state and not mutually similar to each other and notifying the result of not being the same person; When the overlapped state of the registered biometric information and the authentication biometric information is similar to each other, the modified state of the authentication biometric information is calculated, the modified value is compensated, and the registration biometric information and the complete overlapping state are examined. And determining whether two biometric information are identical. The method of claim 7, wherein the compensation of the authentication biometric information, Dividing the frame data of the biometric information for registration into four quarters and selecting feature points distributed in each equal and central portion; Dividing the frame data of the authentication biometric information into quarters and selecting feature points distributed over each equal and central portion; Calculating a distance difference between the feature points of the selected biometric information for registration and the feature points of the biometric information for authentication, and comparing each other; If a difference in distance occurs as a result of the comparison, authentication is performed by adding or subtracting a numerical value according to a change in humidity and pressure to the distance difference between the feature points of the authentication biometric information based on the distance difference between the feature points of the biometric information for registration. Identification method using biometric information, characterized in that for compensating for biometric information. The method of claim 7, wherein the checking of the complete overlapping state to determine whether two biometric information is the same, Checking the distribution of the selected feature points in the pre-processing step and determining that they are not the user when the feature point distributions of the two biometric information are different; If the feature point distributions of the two biometric information are similar, comparing the screen states of the two biometric information as they are, and if they do not match, determines that they are not the same person; Identification method using biometric information comprising a.