JP2003303178A - Individual identifying system - Google Patents
Individual identifying systemInfo
- Publication number
- JP2003303178A JP2003303178A JP2002110378A JP2002110378A JP2003303178A JP 2003303178 A JP2003303178 A JP 2003303178A JP 2002110378 A JP2002110378 A JP 2002110378A JP 2002110378 A JP2002110378 A JP 2002110378A JP 2003303178 A JP2003303178 A JP 2003303178A
- Authority
- JP
- Japan
- Prior art keywords
- blood vessel
- vessel pattern
- fingerprint
- authentication processing
- identification system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 210000004204 blood vessel Anatomy 0.000 claims abstract description 107
- 239000000284 extract Substances 0.000 claims abstract description 4
- 238000012545 processing Methods 0.000 claims description 56
- 238000012795 verification Methods 0.000 claims description 12
- 238000000605 extraction Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 108010010803 Gelatin Proteins 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
Landscapes
- Image Analysis (AREA)
- Lock And Its Accessories (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は個人識別システムに
関し、特に、指先の血管パターンによる照合と指紋によ
る照合を有効に組み合わせて個人の識別を行うシステム
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an individual identification system, and more particularly, to a system for effectively identifying an individual by effectively combining fingertip blood vessel pattern matching and fingerprint matching.
【０００２】[0002]
【従来の技術】近年、建造物への入退出制限や電子デー
タへのアクセス管理等の分野において、物理的な鍵やパ
スワード等に代わる本人認証技術として指紋照合による
個人識別技術が注目されている。指紋は個人毎に全く異
なる紋様をしており、原則として生涯不変であることか
ら個人認証に好適に利用することができる。また、指紋
は物理的な鍵やパスワード等のように紛失や忘れたりす
る心配もなく、新たなセキュリティシステムとして広く
普及する可能性を有している。2. Description of the Related Art In recent years, in the fields such as entry and exit restrictions to buildings and access control to electronic data, personal identification technology by fingerprint collation has been attracting attention as a personal authentication technology in place of physical keys and passwords. . The fingerprint has a completely different pattern for each individual, and since it is invariant throughout the life in principle, it can be suitably used for personal authentication. Further, fingerprints have the possibility of becoming widely used as a new security system without fear of being lost or forgotten like physical keys and passwords.
【０００３】現在商品化がなされている指紋認証技術
は、光学式センサによる指紋の凹凸を光の反射率の違い
として検出する光学式や、指紋の凹凸を電荷蓄積の違い
として検出する静電容量式の他、超音波や電界などを利
用するもの等がある。いずれも指先の表面形状を認識し
て指紋パターンの採取を行うものである。Fingerprint authentication technology that has been commercialized at present is an optical type that detects unevenness of a fingerprint by an optical sensor as a difference in light reflectance, or an electrostatic capacitance that detects unevenness of a fingerprint as a difference in charge accumulation. In addition to the formula, there are those that use ultrasonic waves or electric fields. In both cases, the surface shape of the fingertip is recognized to collect a fingerprint pattern.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、例えば
電子情報通信学会技術研究報告Vol. 100, No. 213, ISE
C2000-45, pp.159-166, 電子情報通信学会, ISSNNO913-
5685.によると、「グミ（ゼラチン水溶液をゲル化させ
たもの）を材料とした指を人工的に生成し、入手した９
つの異なる指紋照合装置を用いてその人工指が受け入れ
られるか否かを実験的に検証し、そのすべての装置にお
いてグミ製人工指が受け入れられることが判明した」と
報告されている。すなわち、何らかの手段で指紋情報を
採取され精巧なレプリカを作成された場合に他人が本人
になりすますことが可能であり、盗用への対策が完全で
ないという問題がある。[Problems to be Solved by the Invention] However, for example, IEICE Technical Report Vol. 100, No. 213, ISE
C2000-45, pp.159-166, The Institute of Electronics, Information and Communication Engineers, ISSNNO913-
According to 5685., "A finger made of gummy (a gel solution of gelatin) was artificially generated and obtained.
We experimentally verified that the artificial fingers could be accepted using three different fingerprint matching devices, and found that all the devices accepted gummy artificial fingers. " In other words, if fingerprint information is collected by some means and an elaborate replica is created, it is possible for another person to impersonate the person himself, and there is a problem that the measures against plagiarism are not complete.
【０００５】また、指紋画像からは比較的多くの特徴点
が抽出されるため、本人確認の精度を高めることができ
るが、その分比較照合処理に時間がかかるという問題が
ある。例えば、その人物についてある期間照合がされて
おらず詳細な照合を行う必要がある場合等は認証精度を
高め、頻繁に同一人物が照合を行う通常時には簡単な照
合で済ますようにすればシステム運営者および利用者双
方にとって便利である。Further, since a relatively large number of feature points are extracted from the fingerprint image, it is possible to improve the accuracy of the person identification, but there is a problem that the comparison and collation processing takes time accordingly. For example, if the person has not been collated for a certain period of time and detailed collation is required, the authentication accuracy is increased, and if the same person is collated frequently, simple collation can be performed during normal operation. It is convenient for both users and users.
【０００６】そこで本発明は、レプリカによる不正認証
を防止すべく指紋認証と指先の血管パターンの認証を並
列に行って本人確認の精度を向上させる個人識別システ
ムを提供することを目的とする。また、最初に血管パタ
ーンによる照合のみを行い、それで不十分な場合にのみ
指紋による照合を行うようにして、認証時間の短縮およ
び処理作業の軽減を実現するシステムを提供することを
目的とする。Therefore, an object of the present invention is to provide a personal identification system which improves the accuracy of identification by performing fingerprint authentication and authentication of a fingertip blood vessel pattern in parallel in order to prevent unauthorized authentication by a replica. Another object of the present invention is to provide a system that reduces the authentication time and the processing work by first performing only the blood vessel pattern matching and then performing the fingerprint matching only when the matching is insufficient.
【０００７】[0007]
【課題を解決するための手段】この目的を達成すべく、
本発明は、指先の生体情報を用いて個人認証を行う個人
識別システムにおいて、指紋認証処理部と血管パターン
認証処理部とを備え、前記指紋認証処理部による指紋の
照合と前記血管パターン認証処理部による血管パターン
の照合とを行い得ることを特徴とする。この場合に、前
記血管パターン認証処理部による認証処理と前記指紋認
証処理部による認証処理とは別個独立に並行して行うこ
とが望ましい。[Means for Solving the Problems] To achieve this purpose,
The present invention, in a personal identification system for performing personal authentication using biometric information of a fingertip, includes a fingerprint authentication processing unit and a blood vessel pattern authentication processing unit, wherein fingerprint verification by the fingerprint authentication processing unit and the blood vessel pattern authentication processing unit are performed. It is characterized in that the blood vessel pattern can be collated by. In this case, it is desirable that the authentication processing by the blood vessel pattern authentication processing unit and the authentication processing by the fingerprint authentication processing unit be performed separately and in parallel.
【０００８】この個人識別システムでは、指先の血管パ
ターンによる認証に加えて指紋認証を行うため、いずれ
か一方の認証のみで本人と判定する装置に比して認証精
度が向上する。また、これらの認証処理を独立に動作さ
せることにより、処理の遅延を回避して従来の指紋認証
装置と同等の処理速度を担保することができる。In this personal identification system, fingerprint authentication is performed in addition to the authentication based on the blood vessel pattern of the fingertip. Therefore, the authentication accuracy is improved as compared with a device that determines the person by only one of the authentications. In addition, by independently operating these authentication processes, it is possible to avoid a delay in processing and ensure a processing speed equivalent to that of a conventional fingerprint authentication device.
【０００９】本発明の個人識別システムにおいて、前記
指紋認証処理部による指紋の照合は、所定の条件を満た
す場合にのみ行われるように構成してもよい。血管パタ
ーンから得られる特徴点は、指紋から得られる特徴点に
比して数が少ないため、通常は血管パターンの照合のみ
で認証を行うようにすれば、システムの処理負担を軽減
し簡易かつ迅速な本人認証を行うことができる。In the personal identification system of the present invention, the fingerprint verification processing section may collate the fingerprints only when a predetermined condition is satisfied. Since the number of feature points obtained from blood vessel patterns is smaller than the number of feature points obtained from fingerprints, if authentication is usually performed only by matching blood vessel patterns, the processing load on the system will be reduced, and it will be simple and quick. You can authenticate yourself.
【００１０】好適な実施例では、前記血管パターン認証
処理部は血管パターンの照合が成功しない場合のリトラ
イ機能を備えるとともに、前記所定の条件は前記血管パ
ターン認証処理部による照合リトライ回数が所定値を越
えたこととする。あるいは、前記所定の条件は、認証対
象である人物について前回行った照合から所定期間経て
いることとしてもよい。このように血管パターンによる
認証がうまくいかない場合や、ある期間照合されておら
ず認証精度を高める必要がある場合にのみ指紋認証を組
み合わせるようにする。In a preferred embodiment, the blood vessel pattern authentication processing unit has a retry function when the blood vessel pattern verification is not successful, and the predetermined condition is that the number of verification retry by the blood vessel pattern authentication processing unit is a predetermined value. I've exceeded it. Alternatively, the predetermined condition may be that a predetermined period of time has passed since the last verification of the person to be authenticated. In this way, fingerprint authentication is combined only when the authentication based on the blood vessel pattern is unsuccessful, or when the verification is not performed for a certain period and the authentication accuracy needs to be improved.
【００１１】本発明の個人識別システムにおいて、前記
血管パターン認証処理部は、指先の血管パターンの画像
を作成する血管画像取得手段と、該画像における血管パ
ターンの分岐点および端点を特徴点としてその座標情報
を抽出する特徴抽出手段と、ここで得た特徴点の座標情
報と予め登録された本人の特徴点の座標情報とを比較照
合する判別手段とを備え、当該判別手段は、原点を中心
として同一象限内に同等の特徴点が存在する場合に本人
であると認識するように構成することが望ましい。In the personal identification system of the present invention, the blood vessel pattern authentication processing unit has a blood vessel image acquisition means for creating an image of a blood vessel pattern of a fingertip, and coordinates of branch points and end points of the blood vessel pattern in the image as feature points. A feature extracting means for extracting information and a discriminating means for comparing and collating the coordinate information of the characteristic points obtained here with the coordinate information of the characteristic points of the person registered in advance are provided, and the discriminating means is centered on the origin. It is desirable to configure so that the person is recognized when the same feature point exists in the same quadrant.
【００１２】上述のように本発明のシステムは血管パタ
ーンの照合と指紋の照合を組み合わせて認証を行うもの
である。ここで指紋による認証は特徴点も多く高精度の
認証を行えるため、血管パターンによる認証は比較的簡
単かつ迅速に行うようにしても認証の確実性は担保でき
る。そこで、本発明では指先の血管画像を原点を中心と
した４つの象限に分け、採取画像と登録画像の対応する
各象限に同等の特徴点があれば本人であると判断する。
各特徴点の相対位置の検討等の判断処理を省くことによ
り簡単かつ迅速な認証を行うことができる。As described above, the system of the present invention combines authentication of blood vessel patterns and fingerprints for authentication. Since fingerprint authentication has many characteristic points and high-accuracy authentication can be performed, the reliability of the authentication can be ensured even if the blood vessel pattern authentication is performed relatively easily and quickly. Therefore, in the present invention, the blood vessel image of the fingertip is divided into four quadrants centered on the origin, and if there are equivalent feature points in the corresponding quadrants of the sampled image and the registered image, it is determined that the person is the person.
By omitting the determination process such as the examination of the relative position of each feature point, simple and quick authentication can be performed.
【００１３】さらに、本発明のシステムでは、前記血管
パターン認証処理部は、指先の血管パターンを検出でき
ない場合には前記指先が生体のものではないと判定する
ように構成する。グミ等で作成したレプリカには血管が
ないため、血管パターンを検出できない場合にその指先
は生体のものではないとして認証を中止する。この構成
により後続の照合処理等を行うことなく迅速に認証結果
を出すことができる。Further, in the system of the present invention, the blood vessel pattern authentication processing unit is configured to determine that the fingertip is not of a living body when the blood vessel pattern of the fingertip cannot be detected. Since the replica created by gummy or the like has no blood vessels, if the blood vessel pattern cannot be detected, the fingertip is judged not to be a living body and the authentication is stopped. With this configuration, the authentication result can be promptly output without performing the subsequent collation processing and the like.
【００１４】[0014]
【発明の実施の形態】本発明の実施の形態を、添付の図
面を参照しながら以下に詳細に説明する。図１は、本発
明の個人識別システムの一実施例の外観を示す図であ
り、図１（ａ）は正面図、図１（ｂ）は側面図である。
本発明の個人識別システム１は表示部１１と、手指挿入
部１２とを備える。図１（ｂ）に示すように、手指挿入
部１２は本体１３に回動可能に取り付けられたフード部
１４を備え、利用者は本体１３とフード部１４との間に
手指を挿入して認証を行う構成となっている。このフー
ド部１４はバネにより本体１３側に付勢されている（図
示せず）。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. 1A and 1B are views showing the outer appearance of an embodiment of the personal identification system of the present invention. FIG. 1A is a front view and FIG. 1B is a side view.
The personal identification system 1 of the present invention includes a display unit 11 and a finger insertion unit 12. As shown in FIG. 1B, the finger insertion portion 12 includes a hood portion 14 rotatably attached to a main body 13, and a user inserts a finger between the main body 13 and the hood portion 14 to perform authentication. It is configured to do. The hood portion 14 is biased toward the main body 13 by a spring (not shown).
【００１５】図１（ｂ）に概略を示すように、手指挿入
部１２は、該挿入部１２に手指を挿入したときに指の腹
に対応する部分に配設された指紋読取部１６と、指紋読
取部１６に隣接して配設された赤外線光源１７と、赤外
線光源１７に対向する箇所のフード部１４に配設された
赤外線読取部１８とを備えている。利用者が手指挿入部
１２に指２０を挿入すると、指紋読取部１６にて指紋画
像が採取される。また、赤外線光源１７から赤外線が指
に照射され、その透過光が赤外線読取部１８で読み取ら
れる。この赤外線光源１７は、血管には反射しそれ以外
の部分を透過する波長の赤外線を読取部１８に向けて照
射する。表示部１１には適宜利用者に向けて必要なメッ
セージが表示される。As schematically shown in FIG. 1 (b), the finger inserting section 12 has a fingerprint reading section 16 arranged at a portion corresponding to the ball of the finger when the finger is inserted into the inserting section 12. An infrared light source 17 disposed adjacent to the fingerprint reading unit 16 and an infrared reading unit 18 disposed in the hood portion 14 facing the infrared light source 17 are provided. When the user inserts the finger 20 into the finger insertion unit 12, the fingerprint reading unit 16 collects a fingerprint image. The infrared light source 17 irradiates the finger with infrared light, and the transmitted light is read by the infrared reading unit 18. The infrared light source 17 irradiates the reading unit 18 with infrared light having a wavelength that is reflected by blood vessels and transmitted through other portions. A necessary message is appropriately displayed on the display unit 11 for the user.
【００１６】図２は、個人認証システム１の内部構成の
概略を示すブロック図である。図２に示すように、本シ
ステムの内部構成は大きく分けて指紋認証処理部２１
と、血管パターン認証処理部２２とからなる。指紋認証
処理部２１は指紋画像の照合により本人認証を行うブロ
ックであり、血管パターン認証処理部２２は血管パター
ンの照合により本人認証を行うブロックである。FIG. 2 is a block diagram showing the outline of the internal configuration of the personal authentication system 1. As shown in FIG. 2, the internal configuration of this system is roughly divided into the fingerprint authentication processing unit 21.
And the blood vessel pattern authentication processing unit 22. The fingerprint authentication processing unit 21 is a block that performs personal authentication by collating fingerprint images, and the blood vessel pattern authentication processing unit 22 is a block that performs personal authentication by collating blood vessel patterns.
【００１７】指紋認証処理部２１は、前述の指紋読取部
１６と、指紋特徴抽出部２４と、指紋照合処理部２５と
を備える。一方、血管パターン認証処理部２２は、前述
の赤外線読取部１８と、血管特徴抽出部２６と、血管照
合処理部２７とを備える。また、指紋照合処理部２５と
血管照合処理部２７とにはデータベース２８が接続され
ている。このデータベース２８には登録人物の指紋デー
タと血管データが格納されている。なお、データベース
２８に予め登録される人物データは一人分とは限らず、
目的や用途に応じて複数人分であってもよい。The fingerprint authentication processing section 21 includes the above-mentioned fingerprint reading section 16, fingerprint characteristic extraction section 24, and fingerprint collation processing section 25. On the other hand, the blood vessel pattern authentication processing unit 22 includes the infrared reading unit 18, the blood vessel feature extraction unit 26, and the blood vessel matching processing unit 27 described above. A database 28 is connected to the fingerprint collation processing unit 25 and the blood vessel collation processing unit 27. The database 28 stores fingerprint data and blood vessel data of registered persons. The person data registered in advance in the database 28 is not limited to one person,
It may be for a plurality of people depending on the purpose and use.
【００１８】指紋読取部１６で採取された指紋画像は指
紋特徴抽出部２４に伝送される。指紋特徴抽出部２４
は、隆線と呼ばれる指の表面の紋様の端点や分岐点を特
徴点として抽出する。この特徴点のデータは指紋照合処
理部２５に送られ、データベース２８に登録された人物
の指紋データと比較照合される。この特徴抽出や比較照
合処理は公知の技術を用いるものとし、ここでの詳細な
説明は省略する。因みに、現在世界の多くの警察では、
１２個の特徴点の配列具合が同じならば同一人の指紋で
あると鑑定されている。この比較照合の結果は総合判定
部３０に報告される。The fingerprint image taken by the fingerprint reading unit 16 is transmitted to the fingerprint feature extracting unit 24. Fingerprint feature extraction unit 24
Extracts, as feature points, the end points and branch points of the pattern on the surface of the finger called ridges. The data of the characteristic points is sent to the fingerprint collation processing unit 25, and is compared and collated with the fingerprint data of the person registered in the database 28. A publicly known technique is used for this feature extraction and comparison and collation processing, and detailed description thereof will be omitted. By the way, many police in the world today
If the 12 feature points have the same arrangement, it is determined that they are fingerprints of the same person. The result of this comparison and collation is reported to the comprehensive judgment unit 30.
【００１９】一方、赤外線読取部１８では血管パターン
の画像が採取される。血管画像は赤外線光源１７から指
先に赤外線を照射し、血管の有無により透過される光量
の差を見ることにより作成される。照射される赤外線は
血管に反射しそれ以外の部分を透過する波長のものが使
用されるので、読取部１８で透過光量が少ない部分が血
管であると認識して血管画像を作成する。なお、読取部
１８は温度分布の濃淡分布画像を作成し、血管を流れる
血流が周辺部分よりも温度が高いことに着目して血管画
像を作成する構成にしてもよい。On the other hand, the infrared reading section 18 collects an image of the blood vessel pattern. The blood vessel image is created by irradiating the fingertip with infrared rays from the infrared light source 17 and observing the difference in the amount of light transmitted depending on the presence or absence of blood vessels. Since the infrared ray to be emitted has a wavelength that reflects on the blood vessel and transmits through other portions, the reading unit 18 recognizes that the portion having a small amount of transmitted light is a blood vessel and creates a blood vessel image. The reading unit 18 may create a grayscale distribution image of the temperature distribution and create the blood vessel image by paying attention to the fact that the blood flow through the blood vessel has a higher temperature than the surrounding portion.
【００２０】血管特徴抽出部２６は血管画像から血管パ
ターンの分岐点や端点を特徴点としてその座標情報を抽
出する。この座標情報は血管照合処理部２７でデータベ
ース２８の登録データと比較照合され、照合結果が総合
判定部３０へ伝達される。この比較照合の例を図３を用
いて説明する。The blood vessel feature extraction unit 26 extracts coordinate information from blood vessel images by using branch points and end points of blood vessel patterns as feature points. This coordinate information is compared and collated by the blood vessel collation processing unit 27 with the registered data in the database 28, and the collation result is transmitted to the comprehensive determination unit 30. An example of this comparison and comparison will be described with reference to FIG.
【００２１】図３において、左側に採取された血管パタ
ーンの特徴点分布を示し、右側にデータベース２８に登
録されてある血管パターンの特徴点分布を示す。血管照
合処理部２７は、原点を中心として各象限に同等の特徴
点が認められた場合に、この血管画像は本人のものであ
ると認識する。図３（ａ）では採取画像と登録画像の双
方に、それぞれ第１、第２、第４象限に一つずつの特徴
点が存在するので、本人の血管パターンであると認識さ
れる。一方、図３（ｂ）では採取画像には第２、第３、
第４に一つずつ特徴点があるのに対し、登録画像では第
１、第２、第４象限に一つずつ特徴点があり、血管パタ
ーンの特徴点の配列が一致しない。この場合、血管照合
処理部２７は登録人物ではない旨を総合判定部２０に報
告する。なお、原点は画像の中心に設定してもよいが、
特徴点の分布に応じて任意の位置に設定してもよい。In FIG. 3, the distribution of the characteristic points of the sampled blood vessel pattern is shown on the left side, and the distribution of the characteristic points of the blood vessel pattern registered in the database 28 is shown on the right side. The blood vessel matching processing unit 27 recognizes that this blood vessel image belongs to the person himself / herself when an equivalent feature point is found in each quadrant around the origin. In FIG. 3A, there is one feature point in each of the first, second, and fourth quadrants in both the sampled image and the registered image, so it is recognized as the blood vessel pattern of the person. On the other hand, in FIG. 3B, the second, third,
In contrast to the fourth feature point, the registered image has one feature point in each of the first, second, and fourth quadrants, and the arrangement of feature points in the blood vessel pattern does not match. In this case, the blood vessel verification processing unit 27 reports to the comprehensive determination unit 20 that the person is not a registered person. The origin may be set at the center of the image,
It may be set at any position according to the distribution of the feature points.
【００２２】血管パターン認証工程において、赤外線読
取部２８で作成される血管画像が一様であり、特徴抽出
部２６で特徴点がまったく抽出されない場合、登録デー
タとの比較照合を行わずにその旨を総合判定部２０に報
告するようにしてもよい。特徴点が抽出されない場合は
血管が存在しないレプリカであると判断できるので、そ
の時点で認証を拒否すべく処理を終了すれば後続の照合
処理等を省略して負担軽減を図ることができる。なお、
そのまま比較照合を行う場合であっても、原点を中心と
した同一象限内に血管特徴点は認められないことになる
ので、データベース２８の登録データとは一致せず、結
果として本人と認証されることはない。In the blood vessel pattern authentication process, if the blood vessel image created by the infrared reading unit 28 is uniform and no feature points are extracted by the feature extracting unit 26, that effect is not made by comparison with the registered data. May be reported to the comprehensive determination unit 20. If the characteristic point is not extracted, it can be determined that the replica does not have a blood vessel. Therefore, if the process ends to reject the authentication at that point, the subsequent collation process and the like can be omitted to reduce the burden. In addition,
Even if the comparison and collation are performed as they are, no blood vessel feature point is found in the same quadrant centered on the origin, so the data does not match the registered data in the database 28, and as a result, the person is authenticated. There is no such thing.
【００２３】本システムの運用動作例は幾通りかを考え
ることができる。すなわち、（１）指紋の照合と血管パ
ターンの照合を同時に並行して行う運用例、（２）指紋
と血管パターンとのいずれか一方の照合を先に行い、照
合結果に疑義がある場合に他方の照合を行う運用例、
（３）通常は指紋と血管パターンとのいずれか一方の照
合のみで認証を済ませ、一定条件下で並行してあるいは
順番に他方の照合をも行う運用例、などが考えられる。It is possible to consider several examples of the operation operation of this system. That is, (1) an operation example in which fingerprint collation and blood vessel pattern collation are simultaneously performed in parallel, (2) collation of either the fingerprint or blood vessel pattern is performed first, and if the collation result is doubtful, the other Example of operation to check
(3) An operation example in which authentication is normally completed only by matching one of the fingerprint and the blood vessel pattern, and the other matching is also performed in parallel or in order under certain conditions is conceivable.
【００２４】（１）指紋と血管パターンの照合を無条件
で両方行う運用例では、指紋認証処理部２１と血管パタ
ーン認証処理部２２とを別個独立の機構として設けるよ
うにする。これにより、従来の指紋認証装置と何ら変わ
らない処理速度で血管パターンの確認をも行うことがで
きる。(1) In an operational example in which both fingerprint and blood vessel pattern matching are performed unconditionally, the fingerprint authentication processing unit 21 and the blood vessel pattern authentication processing unit 22 are provided as separate and independent mechanisms. As a result, it is possible to confirm the blood vessel pattern at a processing speed no different from that of the conventional fingerprint authentication device.
【００２５】（２）指紋か血管パターンかのいずれか一
方の照合を先に行う運用例では、血管パターンの照合を
先に行うようにするのが好適である。血管画像から得ら
れる特徴点は指紋から得られるものに比して数が少ない
ため、認証処理を簡易かつ迅速に行うことができる。ま
た、手指のレプリカを用いた不正認証を防止するために
も、血管パターンの有無を検出できる血管パターン認証
を先に行うのが好適である。この運用例の場合、血管パ
ターン認証処理部２１にリトライ機能を設け、所定期間
内のリトライ回数がしきい値を越える場合などに他方の
照合を行うようにする。この場合に本人と確認するケー
スとしては、（ａ）血管パターンの照合が一致して本人
と確認されるケース（この場合、指紋の照合は行わな
い）、（ｂ）血管パターンは一致しないが血管パターン
の存在が確認され、指紋の照合が一致するケースがあ
る。血管パターンが認識されない場合はレプリカであ
り、血管パターンと指紋の双方が登録データと一致しな
い場合は本人でないと認識される。(2) In an operation example in which either the fingerprint or the blood vessel pattern is collated first, it is preferable to collate the blood vessel pattern first. Since the number of feature points obtained from the blood vessel image is smaller than that obtained from the fingerprint, the authentication process can be performed easily and quickly. Further, in order to prevent unauthorized authentication using a finger replica, it is preferable to first perform blood vessel pattern authentication capable of detecting the presence or absence of a blood vessel pattern. In the case of this operation example, the blood vessel pattern authentication processing unit 21 is provided with a retry function, and when the number of retries within a predetermined period exceeds a threshold value, the other collation is performed. In this case, the case of confirming the person is (a) the case in which the matching of the blood vessel pattern is confirmed and the person is confirmed (in this case, the fingerprint is not compared), and (b) the case of not matching the blood vessel pattern In some cases, the existence of the pattern is confirmed and the fingerprints match. When the blood vessel pattern is not recognized, it is a replica, and when both the blood vessel pattern and the fingerprint do not match the registered data, it is recognized that the person is not the person.
【００２６】（３）通常は指紋か血管パターンかのいず
れか一方の照合のみで認証を済ませ、一定条件下で並行
してあるいは順番に他方の照合をも行う運用例の場合
は、上記と同様の理由により通常時は血管パターンの照
合のみで認証を済ませることが好ましい。この運用例の
場合、例えば対象となる人物について前回照合時より一
定期間が経過している等、本人認証精度を高める必要が
あるときのみ血管パターンの照合に組み合わせて指紋の
照合も行うようにする。すなわち、例えば血管パターン
の照合を行って登録データと一致した場合に、その人物
についての前回照合時の記録を確認し、その時点より所
定期間以上経っている場合に指紋照合を行うようにす
る。また、例えばビルの入退出管理などでは、人が頻繁
に出入りする昼間には血管パターンの認証のみで済ま
せ、夜間には指紋の認証を組み合わせて行うなど、シス
テムの運用環境に応じて設定するようにしてもよい。な
お、これらの運用例はシステム動作のプログラミングに
より実現可能であり、当業者であれば容易にプログラム
構築を行うことができる。(3) In the case of the operation example in which the authentication is normally completed only by the collation of either the fingerprint or the blood vessel pattern and the other collation is also performed under a certain condition in parallel or in order, the same as above. For this reason, it is preferable that the authentication is normally completed only by matching the blood vessel pattern. In the case of this operation example, fingerprint verification is performed in combination with verification of the blood vessel pattern only when it is necessary to improve the personal authentication accuracy, for example, when a certain period has passed since the previous verification of the target person. . That is, for example, when the blood vessel pattern is collated and coincides with the registered data, the record of the person at the time of the previous collation is confirmed, and the fingerprint collation is performed when a predetermined period or more has passed from that point. In addition, for example, in building entry / exit management, it is only necessary to authenticate the blood vessel pattern during the daytime when people frequently enter and exit, and combine fingerprint authentication at night, so that settings can be made according to the operating environment of the system. You may Note that these operation examples can be realized by programming the system operation, and those skilled in the art can easily construct a program.
【００２７】本発明の実施形態について詳細に説明した
が、本発明の技術的範囲は上記実施の形態に限るもので
はなく、実施環境等に応じて他の様々な実施例として実
現することができる。例えば認証装置１の外観構成は図
１に示す例に限らず、表示部１１は必須のものではな
い。また、特徴抽出部２４、２６、照合処理部２５、２
７、データベース２８、総合判定部３０は本体１３内に
ある必要はなく、本体１３とケーブルや通信ネットワー
クで接続された別のコンピュータ等が備えるようにして
もよい。また、本発明の個人識別システムは、建造物等
のゲート入退出制限やコンピュータの使用許諾制限など
認証を必要とする様々な分野に適用することができる。Although the embodiments of the present invention have been described in detail, the technical scope of the present invention is not limited to the above embodiments, and can be realized as various other examples according to the environment of implementation. . For example, the external configuration of the authentication device 1 is not limited to the example shown in FIG. 1, and the display unit 11 is not essential. Further, the feature extraction units 24 and 26, the matching processing units 25 and 2,
7, the database 28, and the comprehensive determination unit 30 do not have to be in the main body 13, and may be provided in another computer or the like connected to the main body 13 by a cable or a communication network. In addition, the personal identification system of the present invention can be applied to various fields that require authentication, such as gate entry / exit restrictions for buildings and computer license restrictions.
【００２８】[0028]
【発明の効果】以上に詳細に説明したように、本発明の
個人識別システムによれば、血管パターンによる認証と
指紋による認証を組み合わせて本人確認を行うためセキ
ュリティ性を向上させることができる。また、血管パタ
ーンの認証において手指が生体のものか否かを判別でき
るため、レプリカを用いた不正認証を確実に防止するこ
とができる。As described above in detail, according to the personal identification system of the present invention, the identification can be performed by combining the authentication based on the blood vessel pattern and the authentication based on the fingerprint, so that the security can be improved. Further, in the authentication of the blood vessel pattern, it is possible to determine whether or not the finger is a living body, so that it is possible to reliably prevent unauthorized authentication using the replica.
【００２９】また、指紋認証動作と血管パターン認証動
作を並列に行うようにすれば、従来の指紋認証装置と変
わらない時間で血管パターンによる認証も行うことがで
き、簡単な構成で高い安全性のあるシステムを実現する
ことができる。Further, if the fingerprint authentication operation and the blood vessel pattern authentication operation are performed in parallel, the authentication by the blood vessel pattern can be performed in the same time as that of the conventional fingerprint authentication apparatus, and the simple structure and high safety are achieved. A certain system can be realized.
【００３０】また、実施環境に応じて、普段は比較的簡
単な血管パターンによる認証で本人確認を行い、一定条
件下で指紋照合を用いた詳細な本人確認を行う等の運用
動作例が可能であるので、目的や用途に応じて認証処理
の効率化を図ることができる。Further, depending on the implementation environment, it is possible to carry out an operational operation example in which the identification is usually performed by the authentication using a relatively simple blood vessel pattern, and the detailed identification is performed using fingerprint collation under certain conditions. Therefore, the efficiency of the authentication process can be improved according to the purpose and use.
【図１】 本発明に係る個人識別システムの外観構成を
示す図である。FIG. 1 is a diagram showing an external configuration of a personal identification system according to the present invention.
【図２】 本発明に係る個人識別システムの内部構成を
示す図である。FIG. 2 is a diagram showing an internal configuration of a personal identification system according to the present invention.
【図３】 血管パターンの認証アルゴリズムの例を説明
する図である。FIG. 3 is a diagram illustrating an example of a blood vessel pattern authentication algorithm.
１ 個人識別システム １１ 表示部 １２ 手指挿入部 １６ 指紋読取部 １８ 赤外線読取部 ２１ 指紋認証処理部 ２２ 血管パターン認証処理部 ２４ 指紋特徴抽出部 ２５ 指紋照合処理部 ２６ 血管パターン特徴抽出部 ２７ 血管照合処理部 ２８ データベース ３０ 総合判定部 1 Personal identification system 11 Display 12 Finger insertion part 16 Fingerprint reader 18 Infrared reader 21 Fingerprint authentication processing unit 22 Blood vessel pattern authentication processing unit 24 Fingerprint feature extraction unit 25 Fingerprint matching processing section 26 Blood Vessel Pattern Feature Extraction Unit 27 Blood vessel matching processing unit 28 Database 30 Comprehensive judgment section
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ａ６１Ｂ 5/10 ３２２ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 7 Identification code FI theme code (reference) A61B 5/10 322
Claims (7)
個人識別システムにおいて、指紋認証処理部と血管パタ
ーン認証処理部とを備え、前記指紋認証処理部による指
紋の照合と前記血管パターン認証処理部による血管パタ
ーンの照合とを行い得ることを特徴とする個人識別シス
テム。1. A personal identification system for performing personal authentication using biometric information of a fingertip, comprising a fingerprint authentication processing section and a blood vessel pattern authentication processing section, wherein the fingerprint authentication processing section collates a fingerprint and the blood vessel pattern authentication processing. An individual identification system characterized by being able to collate blood vessel patterns by parts.
いて、前記血管パターン認証処理部による認証処理と前
記指紋認証処理部による認証処理とは別個独立に並行し
て行われることを特徴とする個人識別システム。2. The individual identification system according to claim 1, wherein the authentication processing by the blood vessel pattern authentication processing unit and the authentication processing by the fingerprint authentication processing unit are performed separately and in parallel. Identification system.
いて、前記指紋認証処理部による指紋の照合は、所定の
条件を満たす場合にのみ行われることを特徴とする個人
識別システム。3. The personal identification system according to claim 1, wherein the fingerprint verification by the fingerprint authentication processing unit is performed only when a predetermined condition is satisfied.
いて、前記血管パターン認証処理部は血管パターンの照
合が成功しない場合のリトライ機能を備えるとともに、
前記所定の条件は前記血管パターン認証処理部による照
合リトライ回数が所定値を越えたことであることを特徴
とする個人識別システム。4. The personal identification system according to claim 3, wherein the blood vessel pattern authentication processing unit has a retry function when collation of the blood vessel pattern is not successful,
The personal identification system, wherein the predetermined condition is that the number of collation retries by the blood vessel pattern authentication processing unit exceeds a predetermined value.
いて、前記所定の条件は、認証対象である人物について
前回行った照合から所定期間経ていることであることを
特徴とする個人識別システム。5. The personal identification system according to claim 3, wherein the predetermined condition is that a predetermined period has passed since the last verification of the person to be authenticated.
識別システムにおいて、前記血管パターン認証処理部
は、指先の血管パターンの画像を作成する血管画像取得
手段と、該画像における血管パターンの分岐点および端
点を特徴点としてその座標情報を抽出する特徴抽出手段
と、ここで得た特徴点の座標情報と予め登録された本人
の特徴点の座標情報とを比較照合する判別手段とを備
え、当該判別手段は、原点を中心として同一象限内に同
等の特徴点が存在する場合に本人であると認識すること
を特徴とする個人識別システム。6. The personal identification system according to claim 1, wherein the blood vessel pattern authentication processing unit creates a blood vessel image acquiring unit that creates an image of a blood vessel pattern of a fingertip, and the blood vessel pattern in the image. A feature extraction unit that extracts the coordinate information of the branch point and the end point as the feature point, and a determination unit that compares and collates the coordinate information of the feature point obtained here with the coordinate information of the feature point of the person who is registered in advance The personal identification system characterized in that the discrimination means recognizes that the person is the person when the same characteristic point exists in the same quadrant around the origin.
識別システムにおいて、前記血管パターン認証処理部
は、指先の血管パターンを認識できない場合には前記指
先が生体のものではないと判定することを特徴とする個
人識別システム。7. The personal identification system according to claim 1, wherein the blood vessel pattern authentication processing unit determines that the fingertip is not a biological body when the blood vessel pattern of the fingertip cannot be recognized. Personal identification system characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002110378A JP2003303178A (en) | 2002-04-12 | 2002-04-12 | Individual identifying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002110378A JP2003303178A (en) | 2002-04-12 | 2002-04-12 | Individual identifying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003303178A true JP2003303178A (en) | 2003-10-24 |
Family
ID=29393531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002110378A Pending JP2003303178A (en) | 2002-04-12 | 2002-04-12 | Individual identifying system |
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| Country | Link |
|---|---|
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