JP2004062846A - Input device of personal identification device - Google Patents

Input device of personal identification device Download PDF

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JP2004062846A
JP2004062846A JP2002258280A JP2002258280A JP2004062846A JP 2004062846 A JP2004062846 A JP 2004062846A JP 2002258280 A JP2002258280 A JP 2002258280A JP 2002258280 A JP2002258280 A JP 2002258280A JP 2004062846 A JP2004062846 A JP 2004062846A
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Japan
Prior art keywords
face
authentication
fingerprint
personal identification
input device
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JP2002258280A
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Japanese (ja)
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Shigeru Yamada
山田 茂
Hidefumi Higuchi
樋口 秀文
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WAIMACHIKKU KK
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WAIMACHIKKU KK
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Priority to JP2002258280A priority Critical patent/JP2004062846A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for performing personal identification from two recognition methods as fingerprint recognition and face recognition and an input device which recognizes a face and a fingerprint image capable of synchronizing touch of a finger in the fingerprint recognition and timing of face photography and excluding an influence of surrounding light beams in a device having both of the fingerprint identification and the face identification. <P>SOLUTION: An individual identification input device is constituted so as to light visible light beams or near-infrared ray illumination at a point when the finger touches a fingerprint sensor and to image a face on one or a plurality of sheets by a face recognition imaging system at the timing. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】この発明は人体の顔と指紋の特徴を事前に登録し、入力された顔と指紋の特徴から個人の認証を行うバイオメトリクス技術を応用した、アクセスコントロール等に利用される入力装置に関するものである。
【0002】
【従来の技術】個人の識別を行うための入力装置は指紋認証方式や顔認証方式が従来から使われてきた。指紋認証装置は光学的な撮像素子や静電容量方式、感圧方式等がある。これらのセンサーから入力されたデータは指紋画像として指紋認識エンジンに入力され、指紋画像が登録済みの該当者のものか判断し、個人認証を行う。顔画像も同様にテレビカメラで顔を撮影し、その画像を顔認識エンジンに入力し、顔による個人認証を行う。従来はこれらの認証は別々に行われていた。
【発明が解決しようとする課題】上記のような従来の個人識別装置の入力装置では、人間の生体情報を使う以上完全とはいいがたく、指紋認証と顔認証の両方を併用させれば、個人認証の精度は向上する。これに関して特開2000−242786に二つ以上の認証の併用の例があるが、これは二つ以上の認証の結果に対しての論理積と論理和で全体の認証の判断をさせるものである。本発明は同じ認証処理装置内で顔認証の特徴量と指紋認証の特徴量を同じカテゴリーとして扱い、クラスター分析法等を使い総合的に個人認証の判断をするものである。また、顔認識の場合、顔を撮影するタイミングや撮影位置や照明条件等が重要になる。しかしながら、顔の撮影を行う場合、常時照明を点灯し、撮影を行えば、エネルギーの無駄になる。また、撮影条件が屋外の場合、太陽光の影響で常に適正が撮影条件が得られるとは限らない。
【0005】この発明は上記問題点を解消するためになされたもので、訪問者撮像用のカメラと指紋センサーを同期させ、常に訪問者の顔の撮影が適性にでき、かつ高精度の個人識別ができるようにした個人識別装置の入力装置を提供することを目的とする。
【0006】
【課題を解決するための手段】この発明の第1発明に係る個人識別装置の入力装置は、顔認識用の撮像装置と指紋認識用の指紋センサーを設置し、両方式の併用による認識精度の向上を図る。また、両方式を併用しているため、指紋センサーに指を置いたタイミングで、撮影用照明を点灯し、カメラにて顔を撮影するようにして、常時、顔撮影用の照明の点灯と撮影装置でも撮影をする必要を無くしたものである。
【0007】また、第2発明に係る個人識別装置の入力装置は、第1発明のものにおいて、撮像装置のシヤッターを短時間開き、同時に同じタイミングで照明を点灯し、照明以外の外部光の影響を排除させることを目的としたものである。
【0008】また、第3発明に係る個人識別装置の入力装置は、第1又は第2発明のものにおいて、撮影装置、照明装置、指紋センサーを一定の範囲に配置し、指を指紋センサーに置くために視線が指紋センサーに行くようにし、その時点で顔の位置が固定されるので、顔の撮影と照明が一定に条件でなされることを目的としたものである。
【0009】また、第4発明に係る個人識別装置の入力装置は、複数の照明装置の場所を変えて配置し、それぞれ個別に順次点灯する。それぞれ照明の位置が違うので、顔の形により、陰影が違う。人間の顔は3次元形状をしており、もし写真のような平板画像があれば認証しないことを目的としたものである。
【00010】また、第5発明に係る個人識別装置の入力装置は、顔認証と指紋認証を同時に行う場合、一般的に顔認証と指紋認証の特徴量分析を行い、顔認証の各特徴量と指紋認証の各特徴量を同じカテゴリーにし、最小距離による識別法等を使って個人認証を行う。また、その認証パラメータの設定を替えスィッチにより切替えることが可能なことと、この設定を事前にプログラムされた時間スケジュールで動作する方法と遠隔地からネットワーク等を使いリモートで設定する方法と、指紋又は顔の事前に登録されたデータベースの個別の認証モードの記載により認証する方法を選択できることを目的としたものである。
【発明の実施の形態】以下に、本発明の実施例を図面に基づいて詳細に説明する。
【0011】図1は、本発明の個人認証入力装置の概略構成図であり、図2は指紋センサーと顔認識カメラのシャッターと照明装置のタイミング図である。図3は、顔撮像カメラと照明装置、指紋センサーの配置図である。
【0012】図1に示すように、本実施例の個人認証入力装置は処理装置1と顔認識カメラ2と照明装置3と指紋センサー4とで構成されている。この入力装置では指紋認証と顔認証を同時に行うので、認証精度が向上する。まず、個人認証対象者は指紋センサー4にタッチする。指紋センサー4は処理装置1に指紋イメージデータを転送し、処理装置1は指紋の認証処理を開始する。同時に照明装置が点灯し顔認証カメラは顔の撮影を行う。処理装置1は指紋認識と顔認識処理に入る。
【0013】図2は指紋センサー4と顔撮影カメラ2のシャッター時間及び照明発光のタイミング図である。一般的にカメラには感度の自動調整機能があるが、カメラの設置場所が屋外や半屋外の場合、太陽光、自動車の照明等の影響により、逆光やその他の影響により、顔が正確に撮影できない場合がある。また、通常の照明装置を用いても太陽光は10万ルックス以上の明るさがあり、これに打ち勝つ照明装置を配置するのは不可能である。本実施例による照明はLED又はレーザ等の発光時間がコントロールできるものである。これらの照明装置は例えば10000万分の1秒の発光時間で照明することが可能であり、発光時間が短いので連続発光に比べて冷却を配慮する心要はない。同時にカメラ側は電子シャッターにて、照明が発光している間露光する。シャッター時間が10000分の1ということは通常30分の1秒間露光しているのに比べ3000分の1だけ露光量が減少するということになり、10万ルックスの太陽光も等価的に数十ルックスになる。このため、顔撮影の条件はこの照明装置だけになり、太陽光等の影響を除外できる。
【0014】図3は指紋センサー、照明装置、撮影カメラの配置図である。人間は指を指紋センサーに近接させる時には必ず指紋センサーを見るのでその近辺に照明装置、顔撮影カメラがあれば必ず一定の方向、一定の照明条件で撮影できる。
【0015】
【発明の効果】以上説明したとおりこの発明の第1発明では、指紋認証、顔認証を同時に行うので個人認証の精度が向上し、顔撮影のタイミングは指紋センサーに触れることで得ることができる。
【0016】また、第2発明では、照明装置を短時間発光させ、カメラのシャッター時間を照明装置に合わせることで、太陽光等の影響を排除でき、顔撮影の照明条件を一定にすることができる。
【0017】また、第3発明では、指紋センサー、照明装置、顔撮影カメラを一定にエリア内に配置することにより顔を一定の角度で撮影することができる。
【図面の簡単な説明】
図1】本発明の個人認証入力装置の概略構成図である。
図2】指紋センサーと顔認識カメラのシャッターと照明装置のタイミング図である。
図3】顔撮像カメラと照明装置、指紋センサーの配置図である。
【符号の説明】
1.   処理装置
2.   顔撮像装置
3.   照明装置
4.   指紋センサー
5.   顔
6.   指
7.   指タッチ
8.   カメラシャッター
9.   照明発光
10.  顔撮像カメラ
11.  照明装置
12.  指紋センサー
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for access control and the like to which biometrics technology for preliminarily registering human face and fingerprint characteristics and authenticating an individual based on the input face and fingerprint characteristics is applied. Related to an input device.
[0002]
2. Description of the Related Art As an input device for identifying an individual, a fingerprint authentication system and a face authentication system have conventionally been used. The fingerprint authentication device includes an optical image sensor, a capacitance method, a pressure-sensitive method, and the like. Data input from these sensors is input to the fingerprint recognition engine as a fingerprint image, and it is determined whether the fingerprint image belongs to a registered person and personal authentication is performed. Similarly, the face image is taken by a television camera, the image is input to a face recognition engine, and personal authentication using the face is performed. Traditionally, these authentications have been performed separately.
The input device of the conventional personal identification device as described above is not perfect because it uses human biometric information. If both fingerprint authentication and face authentication are used together, The accuracy of personal authentication is improved. In this regard, Japanese Patent Application Laid-Open No. 2000-242786 discloses an example in which two or more authentications are used in combination. In this case, the overall authentication is determined by a logical product and a logical sum of two or more authentication results. . The present invention treats the feature amount of face authentication and the feature amount of fingerprint authentication as the same category in the same authentication processing apparatus, and comprehensively determines individual authentication using a cluster analysis method or the like. Further, in the case of face recognition, timing for capturing a face, a capturing position, lighting conditions, and the like are important. However, if the face is photographed, the illumination is always turned on, and if the photographing is performed, energy is wasted. Further, when the shooting conditions are outdoors, the shooting conditions are not always always appropriate due to the influence of sunlight.
SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a camera for photographing a visitor is synchronized with a fingerprint sensor so that a photograph of a visitor's face can always be appropriately photographed and a highly accurate personal identification can be performed. It is an object of the present invention to provide an input device of a personal identification device which can perform the above.
[0006]
The input device of the personal identification device according to the first invention of the present invention is provided with an imaging device for face recognition and a fingerprint sensor for fingerprint recognition. Improve. Also, since both types are used together, the lighting for shooting is turned on when the finger is placed on the fingerprint sensor, and the camera is used to shoot the face, so the lighting for face shooting is always turned on and shooting This eliminates the need for photographing even with the device.
Further, the input device of the personal identification device according to the second invention is the input device of the first invention, in which the shutter of the imaging device is opened for a short time and the illumination is turned on at the same time at the same time. Is intended to be eliminated.
The input device of the personal identification device according to the third invention is the input device of the first or second invention, wherein the photographing device, the illuminating device, and the fingerprint sensor are arranged in a certain range, and the finger is placed on the fingerprint sensor. For this reason, the gaze is directed to the fingerprint sensor, and the position of the face is fixed at that time, so that the photographing and illumination of the face are performed under constant conditions.
Further, the input device of the personal identification device according to the fourth aspect of the present invention is arranged such that a plurality of illuminating devices are arranged in different places, and each of them is individually turned on sequentially. Since the position of the lighting is different, the shading differs depending on the shape of the face. The human face has a three-dimensional shape, and is intended not to be authenticated if there is a flat image such as a photograph.
The input device of the personal identification device according to the fifth invention, when performing face authentication and fingerprint authentication at the same time, generally performs feature analysis of face authentication and fingerprint authentication, and analyzes each feature of face authentication. Each feature amount of fingerprint authentication is set to the same category, and personal authentication is performed using an identification method based on a minimum distance. In addition, the setting of the authentication parameter can be switched by a change switch, a method of operating the setting according to a pre-programmed time schedule, a method of remotely setting using a network or the like from a remote place, a fingerprint or An object of the present invention is to be able to select an authentication method by describing an individual authentication mode in a database in which faces are registered in advance.
Embodiments of the present invention will be described below in detail with reference to the drawings.
FIG . 1 is a schematic configuration diagram of a personal authentication input device of the present invention, and FIG. 2 is a timing diagram of a fingerprint sensor, a shutter of a face recognition camera, and a lighting device. FIG. 3 is a layout diagram of a face imaging camera, a lighting device, and a fingerprint sensor.
As shown in FIG . 1 , the personal authentication input device of this embodiment comprises a processing device 1, a face recognition camera 2, an illumination device 3, and a fingerprint sensor 4. In this input device, since fingerprint authentication and face authentication are performed simultaneously, the authentication accuracy is improved. First, the person to be authenticated touches the fingerprint sensor 4. The fingerprint sensor 4 transfers the fingerprint image data to the processing device 1, and the processing device 1 starts a fingerprint authentication process. At the same time, the lighting device is turned on and the face authentication camera takes a picture of the face. The processing device 1 enters into fingerprint recognition and face recognition processing.
FIG. 2 is a timing chart of the shutter time and illumination light emission of the fingerprint sensor 4 and the face photographing camera 2. In general, cameras have an automatic sensitivity adjustment function, but when the camera is installed outdoors or semi-outdoors, the face is accurately photographed due to backlight or other effects due to sunlight, vehicle lighting, etc. It may not be possible. Moreover, even if a normal lighting device is used, the sunlight has a brightness of 100,000 lux or more, and it is impossible to arrange a lighting device that can overcome this. The illumination according to the present embodiment can control the light emission time of an LED or a laser. These lighting devices can illuminate with a light emission time of, for example, 1/10000 second, and there is no need to consider cooling compared with continuous light emission because the light emission time is short. At the same time, the camera is exposed by an electronic shutter while the illumination is emitting light. A shutter time of 1 / 10,000 means that the exposure is reduced by a factor of 3000 compared to a normal exposure of 1/30 second. Looks. For this reason, the face photographing condition is only the illumination device, and the influence of sunlight or the like can be excluded.
FIG. 3 is an arrangement diagram of a fingerprint sensor, a lighting device, and a photographing camera. Humans always look at the fingerprint sensor when the finger approaches the fingerprint sensor, so if there is an illuminating device and a face photographing camera in the vicinity of the fingerprint sensor, they can always shoot in a certain direction and under a certain lighting condition.
[0015]
As described above, in the first aspect of the present invention, since the fingerprint authentication and the face authentication are performed simultaneously, the accuracy of the personal authentication is improved, and the timing of photographing the face can be obtained by touching the fingerprint sensor.
According to the second aspect of the present invention, the illumination device is caused to emit light for a short time and the shutter time of the camera is adjusted to the illumination device so that the influence of sunlight or the like can be eliminated, and the illumination conditions for face photographing can be kept constant. it can.
According to the third aspect of the present invention, the face can be photographed at a fixed angle by arranging the fingerprint sensor, the lighting device, and the face photographing camera in the fixed area.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a personal authentication input device of the present invention.
FIG. 2 is a timing chart of a fingerprint sensor, a shutter of a face recognition camera, and an illumination device.
FIG. 3 is a layout diagram of a face imaging camera, a lighting device, and a fingerprint sensor.
[Explanation of symbols]
1. Processing device 2. 2. Face imaging device Lighting device 4. Fingerprint sensor5. Face6. Finger 7. Finger touch8. Camera shutter 9. Illumination 10 10. Face imaging camera Lighting device 12. Fingerprint sensor

Claims (5)

人体の顔と指紋の特徴を事前に登録し、顔画像と指紋画像をそれぞれカメラ、指紋センサーで入力した時点で、事前に登録した特徴と照合して本人認証を行う個人識別入力装置において、指紋認証と顔認証を同じ認識処理装置で行い、指紋認証と顔認証の両方の認証を同時に行うことにより個人識別精度を向上させた個人識別方法と指紋センサーに指がタッチした時点で、顔をより良好な撮影条件で撮影するために1台もしくは複数台の可視光、又は近赤外光照明を同じ装置から点灯し、同時にこのタイミングで顔認識カメラで顔を1枚もしくは複数枚撮映することを特徴とした個人識別入力装置。A personal identification input device that registers the features of the human body face and fingerprint in advance and matches the face image and fingerprint image with the previously registered features and performs personal authentication when the face image and fingerprint image are input using the camera and fingerprint sensor, respectively. Authentication and face authentication are performed by the same recognition processing device, and both fingerprint authentication and face authentication are performed at the same time to improve the accuracy of personal identification. Turn on one or more visible or near-infrared lights from the same device to shoot under good shooting conditions, and simultaneously shoot one or more faces with a face recognition camera at this timing. Personal identification input device characterized by the following. 可視光、又は近赤外光照明を指紋センサーにタッチした時点で顔の撮影のために照明装置を発光させる際に、これらの照明装置を短時間にストロボ発光させ、その発光時間に同期して顔認識カメラのシャッターを開き、この短時間シャッターにより、周囲の光の露光時間が短くなり、結果的に周囲光の影響を排除できることを特徴とする請求項1記載の個人識別装置の入力装置。At the time of touching the fingerprint sensor with visible light or near-infrared light illumination, when illuminating the illuminating device for photographing of the face, strobe flashing of these illuminating devices in a short time, synchronized with the emission time 2. The input device for a personal identification device according to claim 1, wherein a shutter of the face recognition camera is opened, and the short-time shutter shortens an exposure time of ambient light, thereby eliminating an influence of ambient light. 顔認証用カメラと、指紋認証用指紋センサーと撮影用照明装置を一定のエリア内に配置し、指紋センサーにタッチするために視線が指紋センサーの方向に向き、同時に顔の向きも固定され、最適の撮影条件で顔の撮影、顔への照明が可能なように構成したことを特徴とする請求項1又は請求項2記載の個人識別装置の入力装置。A camera for face authentication, a fingerprint sensor for fingerprint authentication, and a lighting device for photography are arranged in a certain area, and the line of sight is directed to the fingerprint sensor to touch the fingerprint sensor, and at the same time, the face direction is fixed, so it is optimal 3. The input device of the personal identification device according to claim 1, wherein a face can be photographed and the face can be illuminated under the photographing condition. 設置位置が違う複数台の顔撮影用照明装置を用意し、それぞれを順次点灯し、撮影する。照明の点灯位置がそれぞれ違うため、顔を撮影した場合、顔の陰影がそれぞれの照明装置による撮影により違いが出て、顔の3次元の実物と平板写真とを区別し、顔認証の際、顔写真等での認証を防ぐことを特徴とする請求項1又は請求項2又は請求項3記載の個人識別装置の入力装置。A plurality of lighting devices for photographing faces, which are installed at different positions, are prepared. Because the lighting position of each lighting is different, when the face is photographed, the shading of the face is different due to the photographing by each lighting device, and the three-dimensional real face of the face is distinguished from the flat plate photograph. 4. The input device for a personal identification device according to claim 1, wherein authentication by a face photograph or the like is prevented. 顔認証と指紋認証を同時に行う場合、顔認証と指紋認証の特徴量分析を行い、顔認証の各特徴量と指紋認証の各特徴量を同じ認証空間に置き、最小距離による識別法等を使って個人認証を行う認証方法において、その認証パラメータの設定を替えスィッチにより切替えることが可能なことと、この設定を事前にプログラムされた時間スケジュールで動作する方法と遠隔地からネットワーク等を使いリモートで設定する方法と、指紋又は顔の事前に登録されたデータベースの個別の認証モードの記載により認証する方法を選択できることを特徴とした認証方式を持つ請求項1又は請求項2又は請求項3又は請求項4記載の個人識別装置の入力装置。When performing face authentication and fingerprint authentication at the same time, perform feature analysis of face authentication and fingerprint authentication, place each feature of face authentication and each feature of fingerprint authentication in the same authentication space, and use an identification method based on minimum distance, etc. In the authentication method that performs personal authentication by using a switch, the setting of the authentication parameter can be switched by a switch, and the setting can be operated according to a pre-programmed time schedule. The authentication method according to claim 1, wherein the user can select a setting method and an authentication method by describing individual authentication modes in a database of fingerprints or faces registered in advance. Item 5. An input device of the personal identification device according to Item 4.
JP2002258280A 2002-07-31 2002-07-31 Input device of personal identification device Pending JP2004062846A (en)

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