JP2952637B2 - Impression judgment processing method of fingerprint collation device - Google Patents
Impression judgment processing method of fingerprint collation deviceInfo
- Publication number
- JP2952637B2 JP2952637B2 JP6058474A JP5847494A JP2952637B2 JP 2952637 B2 JP2952637 B2 JP 2952637B2 JP 6058474 A JP6058474 A JP 6058474A JP 5847494 A JP5847494 A JP 5847494A JP 2952637 B2 JP2952637 B2 JP 2952637B2
- Authority
- JP
- Japan
- Prior art keywords
- fingerprint
- collation
- imprinting
- image
- imprint
- 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.)
- Expired - Fee Related
Links
- 238000003672 processing method Methods 0.000 title claims description 7
- 238000000034 method Methods 0.000 claims description 27
- 208000012927 adermatoglyphia Diseases 0.000 claims description 11
- 238000012795 verification Methods 0.000 description 13
- 238000003384 imaging method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 2
- 238000004049 embossing Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/1365—Matching; 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)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】本発明は、指紋照合装置において
指紋押捺の判定処理を行う方式に関し、特に連続して照
合不合格となることを防止した、指紋照合装置の押捺判
定処理方式を提供することを目的としている。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of performing fingerprint imprint judgment processing in a fingerprint collation apparatus, and more particularly to a method of imprint judgment processing of a fingerprint collation apparatus which prevents consecutive rejections. It is intended to be.
【０００２】指紋照合装置は、指紋を撮像して得られた
情報を、予め登録されている指紋情報と自動照合するこ
とによって、本人確認を行うものである。すべての人は
異なる指紋を有しており、かつ指紋は終生不変なもので
あるから、これを特定人の識別情報として利用すること
によって、通常の鍵やカード等を用いることなく、重要
な場所に対する、入室管理等を行うことができる。[0002] A fingerprint collating apparatus performs identity verification by automatically collating information obtained by imaging a fingerprint with fingerprint information registered in advance. Since everyone has different fingerprints, and since fingerprints are permanent, they can be used as identification information for a specific person, without the use of ordinary keys or cards. , Entry control and the like can be performed.
【０００３】このような指紋照合装置において、指紋押
捺の有無を判定する押捺判定処理方式は、繰り返して指
紋照合を行った場合に、連続して照合不合格となること
を防止できるものであることが必要である。[0003] In such a fingerprint collation device, the imprint judging processing method for judging the presence / absence of fingerprint imprinting can prevent continuous rejection when fingerprint collation is repeatedly performed. is necessary.
【０００４】[0004]
【従来の技術】図２は、従来の、および本発明が適用さ
れる指紋照合装置の概要を示したものであって、１は透
明体からなるプリズム型の指置台を示し、１ａはその上
面、１ｂはその傾斜面、１ｃはその下面を示す。２は指
置台１の上面に設けられた指を置くためのプリズム面、
３はプリズム面２上に載せられた指を示す。４はランプ
であって、指置台１の下面１ｃの側から指３を照明す
る。５は撮像装置であって、指置台１の傾斜面１ｂの側
から指３を撮像する。６は指紋照合制御部であって、ラ
ンプ４および撮像装置５を制御して、指紋の照合処理を
行う。指紋照合制御部６において、７は撮像装置５から
取り込まれた指紋画像を処理する画像処理部、８は採取
した指紋画像を辞書として登録する指紋登録部、９は撮
像された指紋画像と登録された辞書画像とを照合して一
致の判定を行う照合部である。2. Description of the Related Art FIG. 2 shows an outline of a conventional fingerprint collating apparatus to which the present invention is applied, wherein 1 denotes a prism type finger rest made of a transparent body, and 1a denotes an upper surface thereof. , 1b indicates its inclined surface, and 1c indicates its lower surface. 2 is a prism surface for placing a finger provided on the upper surface of the finger rest 1,
Reference numeral 3 denotes a finger placed on the prism surface 2. A lamp 4 illuminates the finger 3 from the lower surface 1c side of the finger rest 1. Reference numeral 5 denotes an imaging device, which images the finger 3 from the side of the inclined surface 1b of the finger rest 1. A fingerprint collation control unit 6 controls the lamp 4 and the imaging device 5 to perform fingerprint collation processing. In the fingerprint collation control unit 6, reference numeral 7 denotes an image processing unit that processes a fingerprint image captured from the imaging device 5, reference numeral 8 denotes a fingerprint registration unit that registers a collected fingerprint image as a dictionary, and reference numeral 9 denotes a registered fingerprint image. And a matching unit that matches the dictionary image and determines a match.
【０００５】指置台１のプリズム面２は、ランプ４によ
って、下面１ｃ側から指置台１を透して照明されてい
る。プリズム面２に指３を載せて、指先を押しつけるこ
とによって、指紋隆線がプリズム面２に接触する。この
状態で指置台１の斜面１ｂ側からみると、指紋隆線の部
分が他の部分と光の反射率が異なるため、テレビカメラ
等の撮像装置５によって、指置台１の斜面１ｂ側から、
プリズム面２に形成された指紋像を撮像することができ
る。The prism surface 2 of the finger rest 1 is illuminated by the lamp 4 through the finger rest 1 from the lower surface 1c side. By placing a finger 3 on the prism surface 2 and pressing the fingertip, the fingerprint ridge contacts the prism surface 2. When viewed from the slope 1b side of the finger rest 1 in this state, the fingerprint ridge portion has a different light reflectance from the other portions, and therefore, the imaging device 5 such as a TV camera uses the imaging device 5 such as a television camera from the slope 1b side of the finger rest 1.
A fingerprint image formed on the prism surface 2 can be captured.
【０００６】指紋照合制御部６内の画像処理部７によっ
て、撮像された指紋像を処理して、特徴点の比較を行い
やすいようにしたのち、照合部９において、指紋登録部
８に辞書画像の形で登録されている指紋の特徴点と順次
照合する。そして、所定数以上の特徴点について、入力
指紋像との一致が検出されたとき、照合合格の判定を行
う。指紋の特徴点は、指紋隆線の端点や分岐点等によっ
て抽出される。[0006] The image processing unit 7 in the fingerprint collation control unit 6 processes the picked-up fingerprint image so that the feature points can be easily compared. Then, the collation unit 9 stores the dictionary image in the fingerprint registration unit 8. Are sequentially compared with the fingerprint feature points registered in the form of. Then, when matching with the input fingerprint image is detected for a predetermined number or more of the feature points, it is determined that the matching is successful. The characteristic points of the fingerprint are extracted from the end points and branch points of the fingerprint ridge.
【０００７】指紋照合を行うに先立って、まず、指置台
１上に指３が置かれたことを確認することが必要であ
り、そのため、指紋押捺の有無を判定する押捺判定処理
が行われる。Prior to performing fingerprint collation, it is necessary to first confirm that the finger 3 has been placed on the finger rest 1. For this reason, a stamping determination process for determining whether or not a fingerprint has been stamped is performed.
【０００８】図３は、指紋照合装置における従来の押捺
判定処理を示すフローチャートである。指紋照合時、ま
ず装置は指紋の押捺要求を行う。第１回目の指紋押捺が
行われたことを判定したとき、指紋画像が取り込まれ、
登録されている指紋画像との照合処理が行われる。照合
結果、照合合格となった場合は、照合成功の処理が行わ
れて、例えば、所定の入室許可等の処理が実行される。FIG. 3 is a flowchart showing a conventional embossing determination process in the fingerprint collating apparatus. At the time of fingerprint collation, first, the device requests a fingerprint imprint. When it is determined that the first fingerprint imprinting has been performed, a fingerprint image is captured,
Collation processing with a registered fingerprint image is performed. If the collation is successful, the collation succeeds, and for example, a process such as a predetermined entry permission is executed.
【０００９】第１回目の指紋押捺によって、照合不合格
となった場合は、再び押捺要求が行われて、指紋画像が
取り込まれ、照合処理が行われる。照合不合格の場合
は、このような処理を繰り返して行い、照合３回目で照
合不合格となったときは、照合失敗の処理が行われて、
例えば、入室拒否等の処理が実行される。If the first fingerprint imprint fails the verification, a request for imprinting is made again, a fingerprint image is taken in, and the verification process is performed. If the verification fails, such processing is repeated. If the verification fails in the third verification, the processing of the verification failure is performed.
For example, processing such as entry refusal is executed.
【００１０】[0010]
【発明が解決しようとする課題】図３に示された従来の
指紋押捺判定処理では、照合結果、照合不合格となり、
再度、押捺要求が行われて、これに応じて指紋画像の取
り込みが行われる場合でも、指置台に置かれた指の状態
はそのままであって、３回の照合を行う間、連続的に押
捺面（プリズム面２）に密着保持されていた。In the conventional fingerprint imprint determination process shown in FIG. 3, the collation result is rejection,
Even when a request for imprinting is made again and a fingerprint image is taken in accordance with the request, the state of the finger placed on the finger rest remains the same, and the imprinting is continuously performed during the three times of collation. Surface (prism surface 2).
【００１１】第１回目の照合で、照合不合格となり、指
紋照合装置から再押捺要求が行われた際、第１回目の指
紋押捺から引き続いて、押捺面に指を密着保持していた
場合には、再押捺要求によって取り込まれる指紋画像
は、第１回目に取り込まれた指紋画像とほぼ同じものと
なる。そのため、第１回目に取り込まれた指紋画像によ
る照合結果、照合不合格となった場合は、第２回目に取
り込まれた指紋画像による照合結果も、同様に照合不合
格となる可能性が大きい。In the first collation, the collation is rejected, and when a request for re-printing is made from the fingerprint collation device, if the finger is held in close contact with the imprint surface following the first fingerprint imprint. In other words, the fingerprint image captured by the reprinting request is almost the same as the fingerprint image captured at the first time. Therefore, if the collation result using the fingerprint image captured first time is rejected, the collation result based on the fingerprint image captured second time is also likely to be rejected.
【００１２】そこで、第２回目の指紋押捺の際は、第１
回目の指紋押捺の後、一旦、指を押捺面から離して、新
たに押捺面に載せ直して指紋押捺を行うように促すこと
によって、第２回目の指紋押捺によって取り込まれた指
紋画像による照合結果は、照合合格となる可能性が大き
くなると考えられるが、従来、このような方式は行われ
ていなかった。Therefore, during the second fingerprint printing, the first fingerprint
After the second fingerprint imprint, once remove the finger from the imprint surface, re-place the finger on the imprint surface, and prompt the user to perform the fingerprint imprint, and the collation result based on the fingerprint image captured by the second fingerprint imprint Is considered to have a higher possibility of passing the verification, but such a method has not been conventionally performed.
【００１３】また、従来方式のように、第１回目の指紋
画像採取が行われる以前から、複数回の指紋画像採取の
間、押捺面に指を載せたままにした場合は、押捺時間が
長くなることによって、指の皮膚の伸び縮みが生じて指
紋画像が変形し、照合率が低下することになる。さらに
押捺面に載せた指の位置が偏っていた場合は、指紋の変
形が部分的に生じるため、押捺時間が長くなることによ
って、指紋画像の歪みが大きくなって、さらに照合率が
低下する。Further, if a finger is left on the impression surface during a plurality of fingerprint image acquisitions before the first fingerprint image acquisition is performed as in the conventional method, the impression time is long. As a result, the skin of the finger expands and contracts, the fingerprint image is deformed, and the matching rate is reduced. Furthermore, when the position of the finger placed on the imprint surface is deviated, the fingerprint is partially deformed, so that the imprint time becomes longer, the distortion of the fingerprint image increases, and the collation rate further decreases.
【００１４】指紋画像の取り込みは、装置が指紋押捺を
確認した直後に行われるので、感覚的には、指を指紋押
捺面に載せた瞬間に指紋画像の採取が行われる。従って
本発明方式のように、指紋押捺ごとに押捺面から指を離
すようにすれば、押捺後の指紋画像取り込みのタイミン
グを一定にし、かつ押捺後、短時間に行うことができる
ので、指紋採取時の条件を同じにして、第１回目の指紋
押捺時の照合率と、第２回目の指紋押捺時の照合率と
が、変化しないようにすることが可能になるが、従来、
このような方式は提案されていなかった。Since the fingerprint image is captured immediately after the device confirms the fingerprint imprint, the fingerprint image is sensed as soon as the finger is placed on the fingerprint imprint surface. Therefore, if the finger is released from the surface to be imprinted for each fingerprint imprint as in the method of the present invention, the timing for capturing the fingerprint image after imprinting can be kept constant, and it can be performed in a short time after imprinting. It is possible to make the collation rate at the time of the first fingerprint imprinting and the collation rate at the time of the second fingerprint imprinting unchanged by making the time conditions the same.
Such a method has not been proposed.
【００１５】本発明は、このような従来技術の課題を解
決しようとするものであって、指紋照合装置において、
照合判定を行うべき指紋画像を取り込む際には、指紋押
捺が行われていない状態から指紋押捺を行って、このと
き得られた指紋画像を指紋照合用の画像として取り込む
ようにするものであり、これによって、押捺状態が長時
間継続することによって生じる指紋の変形に基づいて、
押捺された指紋が照合不合格となる事態が繰り返されな
いようにするとともに、押捺後の指紋画像取り込みのタ
イミングを一定にし、かつ押捺後、短時間に行うことが
可能な、指紋照合装置における押捺判定処理方式を提供
することを目的としている。SUMMARY OF THE INVENTION The present invention is to solve such a problem of the prior art, and in a fingerprint collating apparatus,
When capturing a fingerprint image to be subjected to collation determination, fingerprint imprinting is performed from a state where fingerprinting is not performed, and the obtained fingerprint image is captured as an image for fingerprint collation, Thereby, based on the deformation of the fingerprint caused by the imprinting state continuing for a long time,
Imprinting in a fingerprint matching device that prevents imprinted fingerprints from rejecting collation and keeps the timing of capturing the fingerprint image after imprinting constant and that can be performed in a short time after imprinting It is intended to provide a judgment processing method.
【００１６】[0016]
【課題を解決するための手段】本発明は、押捺された指
紋から採取した指紋画像を登録されている辞書画像と照
合して、照合合否を判定する指紋照合装置において、照
合処理の最初の段階で指紋押捺の有無を判定し、照合処
理の最初の段階で指紋押捺が行われていたときは、指離
し要求を行って、この指離し要求後の指紋押捺の有無を
判定し、いずれの指紋押捺有無の判定結果においても、
指紋押捺が行われていないことを確認したとき、指紋押
捺を要求し、この指紋押捺要求後、指紋押捺の有無を再
度判定して、この指紋押捺再判定結果、指紋押捺を確認
したとき、指紋画像の取り込みを行うものである。SUMMARY OF THE INVENTION According to the present invention, there is provided a fingerprint collating apparatus for collating a fingerprint image obtained from an imprinted fingerprint with a registered dictionary image to determine whether or not the collation is successful. To determine the presence or absence of fingerprint imprinting.If fingerprint imprinting has been performed in the first stage of the verification process, a request for finger release is made, and the presence or absence of fingerprint imprinting after this finger release request is determined. In the judgment result of the presence or absence of imprinting,
When it is confirmed that fingerprint imprinting has not been performed, a request for fingerprint imprinting is requested.After the request for fingerprint imprinting, the presence or absence of fingerprint imprinting is determined again. This is to capture images.
【００１７】[0017]
【作用】指紋照合装置においては、押捺された指紋から
採取した指紋画像を登録されている辞書画像と照合し
て、照合合否を判定する。In the fingerprint matching device, the fingerprint image collected from the imprinted fingerprint is compared with the registered dictionary image to determine whether or not the matching is successful.
【００１８】本発明の指紋照合装置の押捺判定処理方式
は、次の各押捺判定処理のステップを備えている。 (1) 照合処理の最初の段階で指紋押捺の有無を判定す
る。 (2) 照合処理の最初の段階で指紋押捺が行われていたと
きは、指離し要求を行う。 (3) 指離し要求後、指紋押捺の有無を判定する。The imprint judging processing method of the fingerprint collating apparatus of the present invention includes the following imprint judging processing steps. (1) At the first stage of the matching process, the presence or absence of fingerprint imprint is determined. (2) If fingerprint imprinting has been performed at the initial stage of the matching process, a finger release request is made. (3) After a finger release request, the presence or absence of fingerprint imprinting is determined.
【００１９】(4) (1) または(2) のいずれの押捺判定の
結果でも、指紋押捺が行われていないことを確認したと
き、指紋押捺を要求する。 (5) 指紋押捺要求後、指紋押捺の有無を再度判定する。 (6) (5) の指紋押捺要求後の指紋押捺再判定結果、指紋
押捺を確認したとき、指紋画像の取り込みを行う。(4) When it is confirmed that fingerprint imprinting has not been performed in any of the results of the imprinting determination in (1) or (2), a request is made for fingerprint imprinting. (5) After the request for fingerprint imprinting, the presence or absence of fingerprint imprinting is determined again. (6) When the fingerprint imprint is confirmed after the fingerprint imprint re-determination result after the fingerprint imprint request in (5), the fingerprint image is captured.
【００２０】従って、本発明方式によれば、指紋照合装
置において、指紋照合の判定結果、照合不合格となる状
態が連続しないようにすることができる。Therefore, according to the method of the present invention, in the fingerprint collation device, the result of the fingerprint collation determination that the collation is not rejected can be prevented from continuing.
【００２１】[0021]
【実施例】図１は、本発明の一実施例を示したものであ
って、本発明の押捺判定処理方式をフローチャートによ
って示し、作用の項に記載された番号は、図１中に示さ
れた番号と一致する。以下、図１に基づいて本発明方式
の動作を説明する。FIG. 1 shows an embodiment of the present invention, in which the impression determination processing method of the present invention is shown by a flowchart, and the numbers described in the section of operation are shown in FIG. Matches the number given. Hereinafter, the operation of the system of the present invention will be described with reference to FIG.
【００２２】(1) 照合処理の最初の段階で、まず、指紋
の押捺の有無を判定する。この場合における、指紋押捺
の有無は、指紋押捺状態では指頭面の光の反射によっ
て、撮像装置において検出される画像が明るく、非押捺
状態では画像が暗いことによって判断することができ
る。(1) In the first stage of the collation processing, first, it is determined whether or not a fingerprint is imprinted. In this case, the presence or absence of fingerprint imprinting can be determined based on the fact that the image detected by the imaging device is bright in the fingerprint imprinting state due to the reflection of light on the finger head and dark in the non-imprinting state.
【００２３】(2) 照合処理の最初の段階で、指紋押捺が
行われていると判定された場合は、指離し要求を発し
て、押捺面から指を離すように促す。(2) If it is determined at the initial stage of the collation process that the fingerprint is being imprinted, a finger release request is issued to urge the user to release the finger from the imprint surface.
【００２４】(3) (2) の指離し要求の発出後、連続的に
指紋の押捺の有無を判定する。(3) After issuing the finger release request in (2), it is continuously determined whether or not a fingerprint is imprinted.
【００２５】(4) (1) において、最初から指紋押捺が行
われていないことを確認した場合、または(3) におい
て、指離し要求発出後に、指紋押捺が行われていないこ
とを確認した場合は、改めて指紋の押捺要求を発出す
る。(4) In (1), when it is confirmed that fingerprinting is not performed from the beginning, or in (3), when it is confirmed that fingerprinting is not performed after issuing a finger release request Issues another request for fingerprint imprinting.
【００２６】(5) (4) の指紋の押捺要求後、再度、連続
的に指紋の押捺の有無の判定を行う。(5) After the request for fingerprint imprinting in (4), the presence / absence of fingerprint imprinting is continuously determined again.
【００２７】(6) (5) の指紋押捺要求後の指紋押捺再判
定結果、指紋押捺が行われたことを確認したときは、そ
の時点で、指紋画像の取り込みを行う。(6) When it is confirmed that fingerprint imprinting has been performed as a result of the fingerprint imprint re-determination after the request for fingerprint imprinting in (5), a fingerprint image is captured at that time.
【００２８】(7) (6) で取り込んだ指紋画像を用いて、
辞書画像との間で照合をとる照合処理を行う。(7) Using the fingerprint image captured in (6),
A collation process for collating with the dictionary image is performed.
【００２９】(8) (7) の照合処理の結果、合格であった
場合は、照合成功処理に移行する。照合結果、不合格で
あったときは、(1) に戻って再度、指紋押捺がない状態
を確認してから指紋押捺を行って照合処理を行う手順を
繰り返す。３回目の照合処理で、照合結果、不合格であ
ったときは、照合失敗処理に移行する。(8) As a result of the collation processing of (7), if the collation is successful, the flow shifts to collation success processing. If the collation is unsuccessful, the procedure returns to (1), again confirms the absence of fingerprint imprinting, and repeats the procedure of performing fingerprint imprinting and collation processing. If the result of the third verification is a rejection, the process proceeds to a verification failure process.
【００３０】本発明によれば、指紋照合装置において、
照合判定を行うべき指紋画像の取り込みを行う際に、指
紋が最初から押捺保持されていた場合、または照合不合
格と判定された時点から連続的に押捺保持されていた場
合には、押捺保持されていた指紋画像を、その後の照合
処理用の指紋画像として取り込むことはない。According to the present invention, in a fingerprint matching device,
When a fingerprint image to be collated is acquired, if the fingerprint was originally impressed and held, or if it was continuously imprinted and held from the time when the verification was judged to be unsuccessful, the imprint was held. The fingerprint image is not taken in as a fingerprint image for the subsequent collation processing.
【００３１】従って、一旦、照合不合格となったのち
も、指紋が連続的に同じ状態に押捺保持されているため
に、不合格と判定された指紋画像とほぼ同様の指紋画像
が、次の照合用の指紋画像として採取され、次の照合時
にも、不合格となる事態が繰り返して生じるのを防止す
ることができる。Therefore, even after the verification is once failed, since the fingerprints are continuously stamped and held in the same state, a fingerprint image substantially similar to the fingerprint image determined to be rejected is replaced by the next one. It is collected as a fingerprint image for collation, and also in the next collation, rejection can be prevented from occurring repeatedly.
【００３２】また本発明方式では、照合処理が行われる
以前における指紋押捺の有無にかかわらず、指を離した
状態から改めて指紋押捺を行って、その直後に指紋画像
の取り込みを行うので、指紋画像の取り込みが、押捺
後、一定のタイミングで、かつ短時間に行われる。従っ
て、第１回目の照合が行われる以前から指紋の押捺保持
が行われていたような場合に生じる、皮膚の伸び縮みに
よる指紋画像の歪みに起因する照合率の低下を防止する
ことができる。Further, in the method of the present invention, regardless of the presence or absence of the fingerprint imprint before the collation processing is performed, the fingerprint is imprinted again from a state in which the finger is released, and the fingerprint image is captured immediately after that. Is taken at a fixed timing and in a short time after imprinting. Therefore, it is possible to prevent a reduction in the matching rate caused by distortion of the fingerprint image due to expansion and contraction of the skin, which occurs when the fingerprint is held and held before the first matching is performed.
【００３３】[0033]
【発明の効果】以上説明したように本発明によれば、指
紋照合装置において、指紋押捺が判定不合格となる状態
が継続しないようにするとともに、押捺後の指紋画像取
り込みのタイミングを一定にし、かつ押捺後、短時間に
行うことが可能な、押捺判定処理方式を提供することが
できるので、指紋照合装置の照合率向上に寄与するとこ
ろが大きい。As described above, according to the present invention, in the fingerprint collation device, the state in which the fingerprint is not judged to be unsuccessful is not continued, and the timing of capturing the fingerprint image after the imprint is made constant. In addition, it is possible to provide an embossing determination processing method that can be performed in a short time after imprinting, which greatly contributes to an improvement in the collation rate of the fingerprint collation device.
【図１】本発明の一実施例を示す図である。FIG. 1 is a diagram showing one embodiment of the present invention.
【図２】従来の、および本発明が適用される指紋照合装
置の概要を示す図である。FIG. 2 is a diagram showing an outline of a conventional fingerprint collation device to which the present invention is applied.
【図３】指紋照合装置における従来の押捺判定処理を示
すフローチャートである。FIG. 3 is a flowchart showing a conventional imprint determination process in the fingerprint matching device.
(1) 〜(6) 押捺判定処理のステップ (1) to (6) Steps in the seal judgment process
Claims (1)
登録されている辞書画像と照合して、照合合否を判定す
る指紋照合装置において、 照合処理の最初の段階で指紋押捺の有無を判定し(1) 、
照合処理の最初の段階で指紋押捺が行われていたとき
は、指離し要求を行って(2) 、該指離し要求後の指紋押
捺の有無を判定し(3) 、前記いずれの指紋押捺有無の判
定結果においても、指紋押捺が行われていないことを確
認したとき、指紋押捺を要求し(4) 、該指紋押捺要求
後、指紋押捺の有無を再度判定し(5) 、該指紋押捺再判
定結果、指紋押捺を確認したとき、指紋画像の取り込み
を行う(6) ことを特徴とする指紋照合装置の押捺判定処
理方式。1. A fingerprint matching device for comparing a fingerprint image collected from an imprinted fingerprint with a registered dictionary image to determine whether or not to match, determines whether or not a fingerprint is imprinted in an initial stage of the matching process. (1),
If fingerprinting was performed at the first stage of the matching process, a finger release request is made (2), and the presence or absence of fingerprint printing after the finger release request is determined (3). In the judgment result, when it is confirmed that the fingerprint is not imprinted, the fingerprint is requested (4), and after the request, the presence or absence of the fingerprint is judged again (5). (6) An imprint determination processing method of a fingerprint collation device, wherein a fingerprint image is taken in when a fingerprint is confirmed as a result of the determination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6058474A JP2952637B2 (en) | 1994-03-29 | 1994-03-29 | Impression judgment processing method of fingerprint collation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6058474A JP2952637B2 (en) | 1994-03-29 | 1994-03-29 | Impression judgment processing method of fingerprint collation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07271948A JPH07271948A (en) | 1995-10-20 |
| JP2952637B2 true JP2952637B2 (en) | 1999-09-27 |
Family
ID=13085437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6058474A Expired - Fee Related JP2952637B2 (en) | 1994-03-29 | 1994-03-29 | Impression judgment processing method of fingerprint collation device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2952637B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004097740A1 (en) * | 1996-08-26 | 2004-11-11 | Masahiko Yamaguchi | Method of updating dictionary images in fingerprint recognition apparatus |
| US6122395A (en) * | 1996-08-26 | 2000-09-19 | Fujitsu Denso Ltd. | Fingerprint dictionary image renewing method |
| US6275601B1 (en) | 1997-03-05 | 2001-08-14 | Fujitsu Denso Ltd. | Fingerprinting judging method |
| JP3959426B2 (en) * | 2005-04-22 | 2007-08-15 | 日立オムロンターミナルソリューションズ株式会社 | Biometric authentication device, terminal device, automatic transaction device |
| JP2007000648A (en) * | 2005-04-22 | 2007-01-11 | Hitachi Omron Terminal Solutions Corp | Biometrics authentication apparatus, terminal equipment, and consumer transaction facility |
-
1994
- 1994-03-29 JP JP6058474A patent/JP2952637B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07271948A (en) | 1995-10-20 |
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