JPH02270088A - Device and method for collating fingerprint - Google Patents

Device and method for collating fingerprint

Info

Publication number
JPH02270088A
JPH02270088A JP1090764A JP9076489A JPH02270088A JP H02270088 A JPH02270088 A JP H02270088A JP 1090764 A JP1090764 A JP 1090764A JP 9076489 A JP9076489 A JP 9076489A JP H02270088 A JPH02270088 A JP H02270088A
Authority
JP
Japan
Prior art keywords
finger
fingerprint
set state
prism
state
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
Application number
JP1090764A
Other languages
Japanese (ja)
Inventor
Michio Sakai
道生 坂井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP1090764A priority Critical patent/JPH02270088A/en
Publication of JPH02270088A publication Critical patent/JPH02270088A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G06COMPUTING OR CALCULATING; COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12Fingerprints or palmprints
    • G06V40/1365Matching; Classification

Landscapes

  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Collating Specific Patterns (AREA)
  • Image Input (AREA)

Abstract

PURPOSE:To fix the picture of a fingerprint and to obtain the fingerprint information of high accuracy by displaying the level of the force with which a finger depresses a prism. CONSTITUTION:An optimum level for the set state of a finger 2 is set to a display device 6 and an alarming device is provided to promote the reset of the finger 2 according to a deciding means (processor 5) to decide whether the set state of the finger 2 is suitable or not when the set state of the finger 2 is defective. By displaying the level of the force with which the finger 2 depresses the prism 1, the uneveness of the force is reduced as much as possible and the fingerprint picture to be sampled can be fixed. Even when the finger 2 is dislocated from the prism 1 and set, such a state can be corrected. Thus, the fingerprint picture of the high accuracy can be sampled.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、個人確認を指紋により行う指紋照合装置及び
指紋照合方法に係り、特にプリズムを用いた指紋照合装
置の指紋入力部における指セット状態のチエツクに関す
るものである。
Detailed Description of the Invention (Industrial Application Field) The present invention relates to a fingerprint verification device and a fingerprint verification method that perform personal identification using fingerprints, and particularly relates to a finger set state in a fingerprint input section of a fingerprint verification device using a prism. This is related to checking.

(従来の技術) 各種のカードの普及に伴って、ICカードもその実用期
に入りつつある。そのICカードを利用する場合、個人
確認を行うために暗証番号を用いるようにしている。と
ころが、暗証番号は忘れ易く、また、他人による盗用の
恐れがあるといった問題を持っている。
(Prior Art) With the spread of various cards, IC cards are also entering the period of practical use. When using the IC card, a personal identification number is used to confirm the identity. However, PIN numbers are easy to forget and have the problem of being stolen by others.

そこで、近年、暗証番号の代わりにカード利用者の肉体
的特徴を表す指紋情報をICカードに登録し、利用の都
度、端末としての指紋照合装置を用いて指紋の照合を行
い、個人確認を行う方式が提案されている。
Therefore, in recent years, fingerprint information representing the physical characteristics of the card user is registered in the IC card instead of the PIN number, and each time the card is used, the fingerprint is compared using a fingerprint matching device as a terminal to confirm the identity. A method has been proposed.

(発明が解決しようとする課題) しかしながら、そのような指紋照合装置においては、入
力時の指の状態や押捺条件などにより、指紋画像に偽の
特徴点(擬似特徴点)が生じるといった問題があった。
(Problem to be Solved by the Invention) However, in such a fingerprint verification device, there is a problem that false minutiae (pseudo minutiae) are generated in the fingerprint image depending on the condition of the finger at the time of input, the stamping conditions, etc. Ta.

特に、指紋入力部において、プリズムに指を一定の力で
押し当てることは難しい。
In particular, in a fingerprint input section, it is difficult to press a finger against a prism with a constant force.

本発明は、上記問題点を除去し、指紋画像入力時の指の
セット状態をチエツクし、適切な指紋画像を採取するこ
とができる指紋照合装置及び指紋照合方法を提供するこ
とを目的とする。
SUMMARY OF THE INVENTION An object of the present invention is to provide a fingerprint matching device and a fingerprint matching method that can eliminate the above-mentioned problems, check the set state of a finger at the time of inputting a fingerprint image, and collect an appropriate fingerprint image.

(課題を解決するための手段) 本発明は、上記目的を達成するために、プリズムを用い
て指紋画像を入力し、処理装置において予め記憶されて
いる指紋情報との照合を行い、個人確認を行う指紋照合
装置において、指のセット状態をリアルタイムで表示す
る表示装置と、該表示装置に指のセット状態の最適レベ
ルを設定しておき、該指のセット状態が適切であるか否
かを判定する判定手段と、該判定手段により指のセット
状態が不良の場合に、指の再セットを促すアラーム装置
とを設けるようにしたものである。
(Means for Solving the Problems) In order to achieve the above object, the present invention inputs a fingerprint image using a prism, compares it with fingerprint information stored in advance in a processing device, and performs personal identification. In a fingerprint verification device that performs a fingerprint verification, a display device that displays the finger set state in real time, an optimal level of the finger set state is set on the display device, and it is determined whether or not the finger set state is appropriate. and an alarm device that prompts the operator to reset the finger when the finger is determined to be incorrectly set by the determining means.

また、プリズムを用いて指紋画像を入力し、処理装置に
おいて予め記憶されている指紋情報との照合を行い、個
人確認を行う指紋照合方法において、指のセット状態を
リアルタイムで表示し、予め指のセット状態の最適レベ
ルを設定しておき、入力された指のセット状態が適切で
あるか否かを判定し、指のセット状態が不良の場合には
アラームを発して指の再セットを促すようにしたもので
ある。
In addition, in a fingerprint matching method that uses a prism to input a fingerprint image and compares it with pre-stored fingerprint information in a processing device to confirm the individual, the set state of the finger can be displayed in real time, and the fingerprint image can be checked in advance. The optimal level of the set state is set, and it is determined whether the input finger set state is appropriate or not, and if the finger set state is poor, an alarm is issued to prompt the user to reset the finger. This is what I did.

(作用) 本発明によれば、上記のように構成したので、指がプリ
ズムを押圧する力のレベルを表示することによって、そ
の力のムラを極力少なくし、採取される指紋画像を一定
にすることができる。
(Function) According to the present invention, configured as described above, by displaying the level of the force with which the finger presses the prism, the unevenness of the force is minimized and the collected fingerprint image is made constant. be able to.

また、指がプリズムに対してズしてセットされた場合に
も、これを矯正させることができる。
Furthermore, even if the finger is set in a misaligned manner with respect to the prism, this can be corrected.

(実施例) 以下、本発明の実施例について図面を参照しながら詳細
に説明する。
(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

第1図は本発明の指紋照合装置のta略構成図である。FIG. 1 is a schematic configuration diagram of a fingerprint matching device of the present invention.

この図において、1はプリズム、2はそのプリズムにセ
ットされる指、3は面センサであり、例えば第2図に示
すように250 X 240 ドツトを有し、指がセッ
ト可能な全領域のうち上、下、中、左。
In this figure, 1 is a prism, 2 is a finger set on the prism, and 3 is a surface sensor, which has, for example, 250 x 240 dots as shown in Fig. 2, and out of the total area where the finger can set. Top, bottom, middle, left.

右の5領域(各60ドツト)を抽出して、指の押圧画像
を出力する。
Five areas on the right (60 dots each) are extracted and a finger press image is output.

次に、A/D変換器4によりその押圧画像をAD変換を
行い、処理装置5に取り込む、そして、処理装置5に取
り込んだ上、下、中、左、右の5領域(各60ドツト)
の押圧状態を、指のセット状態表示装置6で表示する。
Next, the A/D converter 4 performs AD conversion on the pressed image, and imports it into the processing device 5.Five areas (top, bottom, middle, left, and right) (60 dots each) are taken into the processing device 5.
The pressed state is displayed on the finger set state display device 6.

更に、その押圧状態が適切であるか否かを、予め記憶さ
れている適切レベル値と比較することにより判定し、適
していない場合にはアラームを発し、指の再セットを促
す。
Furthermore, it is determined whether the pressing state is appropriate by comparing it with a pre-stored appropriate level value, and if it is not appropriate, an alarm is issued to prompt the user to reset the finger.

以下、その動作について第4図のフローチャートを参照
しながら詳細に説明する。
The operation will be explained in detail below with reference to the flowchart of FIG.

(1)まず、プリズムへ指をセットする(ステップ■)
(1) First, set your finger on the prism (step ■)
.

(2)次に、その指の画像を面センサ〔上a、中C2下
e、左す、右dの59M域(5ポイント)を抽出(第2
図参照)〕にて採取する(ステップ■)。
(2) Next, the image of the finger is extracted using the surface sensor [59M area (5 points) of upper a, middle C2 lower e, left, and right d (second
(see figure)] (step ■).

(3)その採取された画像情報をA/D変換器によりA
D変換を行う(ステップ■)。
(3) The collected image information is converted into an A/D converter.
Perform D conversion (step ■).

(4)前記面センサの全領域のうち、指定された上。(4) The designated top of the entire area of the surface sensor.

下、中、左、右の5 wI域(各60ドツト)を抽出し
て、各領域の平均値を算出する(ステップ■)。
Five wI regions (60 dots each) at the bottom, middle, left, and right are extracted, and the average value of each region is calculated (step ■).

(5)その夏山結果を液晶表示する(ステップ■)。(5) Display the summer mountain result on the LCD (step ■).

例えば、第3図(a)に示すように、各領域の指の押圧
状態を表示した場合、左すの領域は極端に小さく、右d
O8I域は大きい、このような場合は、指が右側に傾い
た状態で押し当てられていることが分かる。
For example, as shown in Fig. 3(a), when displaying the finger pressure status of each area, the left area is extremely small, and the right area is extremely small.
The O8I area is large, and in such a case, it can be seen that the finger is pressed to the right side.

(6)各指定6N域のデータは基準に対して適切か否か
を判断する(ステップ■)。
(6) It is determined whether the data in each designated 6N area is appropriate for the standard (step 2).

(7)そこで、各指定領域のデータは基準に対して適切
でない場合、例えば前記した第3図(a)に示すような
場合には、アラームを発して指紋を押す人に指の再セッ
トを促し、指が前回より左側に傾くようにセットさせる
(ステップ■)、すると、第3図(b)に示すように、
各領域の指の押圧状態は基準値近傍にバランスすること
になり、適切なレベルにあることが分かる。この状態で
は、アラームは作動しない。
(7) Therefore, if the data in each designated area is not appropriate for the standard, for example in the case shown in Figure 3 (a) above, an alarm will be issued and the person pressing the fingerprint will be required to reset the finger. prompt the user to set the finger so that it is tilted to the left more than before (step ■). Then, as shown in Figure 3 (b),
It can be seen that the pressing state of the finger in each area is balanced around the reference value, and is at an appropriate level. In this state, the alarm will not operate.

各指定領域のデータは基準に対して適切である場合には
、その指紋情報を取り込む。
If the data in each designated area is appropriate for the standard, its fingerprint information is imported.

なお、前記実施例においては、指の押圧状態のチエツク
のみについて述べたが、指が極端にズしてセットされた
場合には、それに応じて指がセットされない領域が生じ
ることになり、この領域は指が押圧していないと同様に
判定されるので、再セットすることによりそのズレをな
くすようにすることができる。
In the above embodiment, only the checking of the pressed state of the finger was described, but if the finger is set with an extremely misaligned position, there will be an area where the finger is not set, and this area Since it is determined in the same way that the finger is not pressing, the misalignment can be eliminated by resetting.

また、上記実施例においては、指定領域を5碩域とした
が、その指定領域の数を増すことにより、より精度の高
い指のセット状態のチエツクを行うことができることは
言うまでもない。
Further, in the above embodiment, the designated areas are five areas, but it goes without saying that by increasing the number of designated areas, it is possible to check the finger set state with higher accuracy.

また、本発明は上記実施例に限定されるものではなく、
本発明の趣旨に基づいて種々の変形が可能であり、これ
らを本発明の範囲から排除するものではない。
Furthermore, the present invention is not limited to the above embodiments,
Various modifications are possible based on the spirit of the present invention, and these are not excluded from the scope of the present invention.

(発明の効果) 以上、詳細に説明したように、本発明によれば、指がプ
リズムを押圧する力のレベルを表示するように構成した
ことにより、プリズムを押す力のムラを極力少なくし、
採取される指紋画像を一定にすることができる。
(Effects of the Invention) As described in detail above, according to the present invention, the level of force with which the finger presses the prism is displayed, thereby minimizing unevenness in the force with which the finger presses the prism.
It is possible to keep the collected fingerprint images constant.

また、プリズムに対して指がズしてセットされた場合に
もこれを矯正させることができる。
Furthermore, even if a finger is misaligned with respect to the prism, this can be corrected.

従って、高精度の指紋情報を得ることができ、信顛性の
向上を図ることができる。
Therefore, highly accurate fingerprint information can be obtained and reliability can be improved.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の指紋照合装置の概略構成図、第2図は
その指紋照合装置の面センサの平面図、第3図はその指
紋照合装置の指のセント状態を表する図、第4図はその
指紋照合方法を示すフローチャートである。 1・・・プリズム、2・・・指、3・・・面センサ、4
・・・A/D変換器、5・・・処理装置、6・・・指の
セント状態表示装置。 特許出願人 沖電気工業株式会社 代理人 弁理士  清 水  守(外1名)基 隼 (α) (b) よ亮朔、、鋼1.セット撲E耘するトゴ第3図 第4図
FIG. 1 is a schematic configuration diagram of the fingerprint verification device of the present invention, FIG. 2 is a plan view of the surface sensor of the fingerprint verification device, FIG. 3 is a diagram showing the cent state of the finger of the fingerprint verification device, and FIG. The figure is a flowchart showing the fingerprint matching method. 1... Prism, 2... Finger, 3... Surface sensor, 4
. . . A/D converter, 5 . . . Processing device, 6 . . . Finger cent state display device. Patent Applicant Oki Electric Industry Co., Ltd. Agent Patent Attorney Mamoru Shimizu (1 other person) Kijun (α) (b) Ryosaku Yo, Hagane 1. Set Bout E Togo Figure 3 Figure 4

Claims (2)

【特許請求の範囲】[Claims] (1)プリズムを用いて指紋画像を入力し、処理装置に
おいて予め記憶されている指紋情報との照合を行い、個
人確認を行う指紋照合装置において、(a)指のセット
状態をリアルタイムで表示する表示装置と、 (b)該表示装置に指のセット状態の最適レベルを設定
しておき、該指のセット状態が適切であるか否かを判定
する判定手段と、 (c)該判定手段により指のセット状態が不良の場合に
、指の再セットを促すアラーム装置とを具備する指紋照
合装置。
(1) In a fingerprint matching device that inputs a fingerprint image using a prism and compares it with pre-stored fingerprint information in a processing device to confirm the individual, (a) Displays the set state of the finger in real time. a display device; (b) a determining means for setting an optimal level of a finger set state on the display device and determining whether or not the finger set state is appropriate; and (c) by the determining means. A fingerprint verification device comprising an alarm device that prompts the user to reset the finger when the finger is not properly set.
(2)プリズムを用いて指紋画像を入力し、処理装置に
おいて予め記憶されている指紋情報との照合を行い、個
人確認を行う指紋照合方法において、(a)指のセット
状態をリアルタイムで表示し、(b)予め指のセット状
態の最適レベルを設定しておき、入力された指のセット
状態が適切であるか否かを判定し、 (c)指のセット状態が不良の場合にはアラームを発し
て指の再セットを促すことを特徴とする指紋照合方法。
(2) In a fingerprint matching method in which a fingerprint image is input using a prism and compared with fingerprint information stored in advance in a processing device to confirm the individual, (a) the set state of the finger is displayed in real time. , (b) Set the optimal level of the finger set state in advance and determine whether the input finger set state is appropriate; (c) Set an alarm if the finger set state is poor. A fingerprint verification method characterized by emitting a message to prompt the user to reset the finger.
JP1090764A 1989-04-12 1989-04-12 Device and method for collating fingerprint Pending JPH02270088A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1090764A JPH02270088A (en) 1989-04-12 1989-04-12 Device and method for collating fingerprint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1090764A JPH02270088A (en) 1989-04-12 1989-04-12 Device and method for collating fingerprint

Publications (1)

Publication Number Publication Date
JPH02270088A true JPH02270088A (en) 1990-11-05

Family

ID=14007673

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1090764A Pending JPH02270088A (en) 1989-04-12 1989-04-12 Device and method for collating fingerprint

Country Status (1)

Country Link
JP (1) JPH02270088A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010088237A (en) * 2000-03-11 2001-09-26 신영현 Method for Application of Finger Print Device
US6870946B1 (en) 1998-08-06 2005-03-22 Secugen Corporation Compact optical fingerprint capturing and recognition system
US6917695B2 (en) 1998-11-12 2005-07-12 Secugen Corporation High contrast, low distortion optical acquisition system for image capturing
JP2007097842A (en) * 2005-10-04 2007-04-19 Fujitsu Ltd Fingerprint collation device provided with fingerprint distortion detection device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58201178A (en) * 1982-05-20 1983-11-22 Nippon Telegr & Teleph Corp <Ntt> Fingerprint image input device
JPS6143379A (en) * 1984-08-08 1986-03-01 Nec Corp Picture input device
JPS63244284A (en) * 1987-03-31 1988-10-11 Mitsubishi Electric Corp Fingerprint verification device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58201178A (en) * 1982-05-20 1983-11-22 Nippon Telegr & Teleph Corp <Ntt> Fingerprint image input device
JPS6143379A (en) * 1984-08-08 1986-03-01 Nec Corp Picture input device
JPS63244284A (en) * 1987-03-31 1988-10-11 Mitsubishi Electric Corp Fingerprint verification device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6870946B1 (en) 1998-08-06 2005-03-22 Secugen Corporation Compact optical fingerprint capturing and recognition system
US6917695B2 (en) 1998-11-12 2005-07-12 Secugen Corporation High contrast, low distortion optical acquisition system for image capturing
KR20010088237A (en) * 2000-03-11 2001-09-26 신영현 Method for Application of Finger Print Device
JP2007097842A (en) * 2005-10-04 2007-04-19 Fujitsu Ltd Fingerprint collation device provided with fingerprint distortion detection device

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