JP2008004003A - Face-collating device - Google Patents

Face-collating device Download PDF

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JP2008004003A
JP2008004003A JP2006175262A JP2006175262A JP2008004003A JP 2008004003 A JP2008004003 A JP 2008004003A JP 2006175262 A JP2006175262 A JP 2006175262A JP 2006175262 A JP2006175262 A JP 2006175262A JP 2008004003 A JP2008004003 A JP 2008004003A
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face
light
face image
person
subject
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JP4811863B2 (en
JP2008004003A5 (en
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Toru Oshima
亨 大島
Masanari Yamashita
真生 山下
Yojiro Kamise
陽二郎 神瀬
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Glory Ltd
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Glory Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To obtain a face-collating device which guides a person to be photographed to an adequate photographing position, picks up an adequate image of his (or her) face and performs face authentication with high precision. <P>SOLUTION: The face-collating device 90 performs personal authentication by collating a preliminarily stored face image with a face image of a person 2 whose photograph is taken. In this case, the device is provided with; a photographing means 3 which photographs the face image of the person 2 to be photographed; a light direction detecting means 4 which detects a direction of the brightest light ahead of the photographing means 3; and a guiding means 7 which guides the person 2 to be photographed, so that he (or she) may stand toward the direction of the brightest light, based on the detected direction of the light. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、入退室管理装置、玄関ドア、自動販売機等の制御装置の制御において、本人認証を行うための顔照合装置に関するものである。   The present invention relates to a face collation device for authenticating a person in control of a control device such as an entrance / exit management device, an entrance door, or a vending machine.

従来、認証対象となる人の顔をＣＣＤ（Charge Coupled Device）カメラ等で撮影した入力画像と、予め記憶されている記憶画像とを照合し、本人であることを認証する顔照合装置が知られている。   2. Description of the Related Art Conventionally, there has been known a face collation apparatus that collates an input image obtained by capturing a face of a person to be authenticated with a CCD (Charge Coupled Device) camera or the like and a stored image stored in advance to authenticate the identity of the person. ing.

例えば、特許文献１には、認証対象となる人の顔を照らすための照明装置を備え、ビデオカメラで撮影された人の顔を入力画像として取り込み、予め記憶された記憶画像と照合することによって顔認証をおこなう顔照合装置が開示されている。   For example, Patent Literature 1 includes an illumination device for illuminating the face of a person to be authenticated, captures the face of a person photographed with a video camera as an input image, and collates it with a stored image stored in advance. A face matching device that performs face authentication is disclosed.

特開平１０−１３４１８８号公報Japanese Patent Laid-Open No. 10-134188

しかしながら、この従来技術を用いた場合、照明装置の放つ光は太陽光に比較すると弱いので、たとえば、屋外に顔照合装置を設置した場合には、直射日光が人の顔にあたると顔に影ができてしまい、たとえ本人であっても記憶画像との差異点が多くなり認証率が著しく低下するという問題があった。顔照合装置を屋外や外光が射し込む場所に設置したいというニーズは存在するものの、かかる認証率の低下は避けられないために顔照合装置の設置場所が限定されてしまうこととなる。   However, when this conventional technology is used, the light emitted from the lighting device is weak compared to sunlight. For example, when a face matching device is installed outdoors, shadows appear on the face when direct sunlight hits a human face. As a result, even if the person himself / herself is the person himself / herself, there is a problem that the difference from the stored image is increased and the authentication rate is remarkably lowered. Although there is a need to install the face collation device outdoors or in places where external light is shining, such a decrease in the authentication rate is unavoidable, so the installation location of the face collation device is limited.

このため、かかる照明装置にストロボ光などの太陽光に近い照度を有するランプを用いて認証時に発光させることも考えられる。このようにすることで、太陽光により顔にできる影をある程度消すことができるが、太陽光が非常に強いと十分な認証率を得ることができない。   For this reason, it is conceivable that a lamp having an illuminance close to sunlight, such as strobe light, is used for such an illumination device to emit light during authentication. By doing so, shadows formed on the face by sunlight can be erased to some extent, but if the sunlight is very strong, a sufficient authentication rate cannot be obtained.

また、このような強力な光を発する照明装置を備えた顔照合装置では、認証対象となる人が不快な思いをするばかりでなく、通行人などにも光が漏れてしまうので、照明装置が放つ光により周辺の環境が悪化するという問題があらたに発生してしまう。   Moreover, in the face collation apparatus provided with such an illumination device that emits strong light, not only does the person who is the subject of authentication feel uncomfortable, but also the light leaks to passers-by, etc. The problem that the surrounding environment deteriorates due to the emitted light is newly generated.

本発明は、上記に鑑みてなされたものであって、屋外や外光が射しこむ場所に設置された場合であっても、被撮影者を適切な撮影位置に案内して適切な顔画像を撮影することができ、高い精度で顔認証を行なうことができる顔照合装置を得ることを目的とする。   The present invention has been made in view of the above, and even when the apparatus is installed outdoors or in a place where external light shines, the person to be imaged is guided to an appropriate shooting position to display an appropriate face image. An object of the present invention is to obtain a face collation apparatus that can take a picture and can perform face authentication with high accuracy.

上述した課題を解決し、目的を達成するために、本発明は、予め記憶された顔画像と被撮影者の顔画像とを照合して本人認証を行なう顔照合装置において、被撮影者の顔画像を撮影する撮影手段と、前記撮影手段の前方の最も明るい光の方向を検出する光方向検出手段と、検出された前記光の方向に基づいて、前記被撮影者を前記光の方向に立つように案内する案内手段と、を備えることを特徴とする。   In order to solve the above-described problems and achieve the object, the present invention provides a face collation apparatus that performs personal authentication by collating a face image stored in advance with a face image of the photographed person. An image capturing unit that captures an image, a light direction detection unit that detects a direction of the brightest light in front of the image capturing unit, and the subject to stand in the light direction based on the detected light direction Guidance means for guiding in this manner.

本発明にかかる顔照合装置は、被撮影者を適切な撮影位置に案内して適切な顔画像を撮影することができ、高い精度で顔認証をおこなうことができるという効果を奏する。   The face collation apparatus according to the present invention can guide a subject to an appropriate shooting position and shoot an appropriate face image, and has an effect that face authentication can be performed with high accuracy.

以下に、本発明にかかる顔照合装置の実施例を図面に基づいて詳細に説明する。なお、この実施例によりこの発明が限定されるものではない。   Embodiments of a face collation apparatus according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

図１は、本発明にかかる顔照合装置の実施例の外観を示す斜視図であり、図２は、顔照合装置の制御系統の構成を示す概略図であり、図３−１は、被撮影者が顔照合装置の前方正面に立って撮影される場合を示す平面図であり、図３−２は、被撮影者が顔照合装置の斜め前方に立って撮影される場合を示す平面図であり、図４−１は、光方向検出手段の斜視図であり、図４−２は、光方向検出手段の平面図であり、図５は、制御手段による顔照合の制御フローチャートである。   FIG. 1 is a perspective view showing an external appearance of an embodiment of a face matching device according to the present invention, FIG. 2 is a schematic diagram showing a configuration of a control system of the face matching device, and FIG. FIG. 3-2 is a plan view showing a case where a person is photographed while standing in front of the face matching device, and FIG. FIG. 4A is a perspective view of the light direction detecting unit, FIG. 4B is a plan view of the light direction detecting unit, and FIG. 5 is a control flowchart of face matching by the control unit.

図１及び図２に示すように、本実施例の顔照合装置９０は、四角柱状に形成された筐体１と、筐体１の前面１ａの被撮影者２の顔の高さ位置に設けられた窓部１ｂと、窓部１ｂの後方の筐体１内に設置された撮影手段としてのカメラ３と、筐体１の上部に設置された光方向検出手段４と、窓部１ｂの下側に設置され被撮影者２の立った方向を検出する立ち方向検出手段５と、立ち方向検出手段５の下側に設置され、撮影された顔画像等を表示する表示手段６と、表示手段６の下側に設置され被撮影者２に立ち位置を案内する案内手段７と、案内手段７の下側に設置されＩＣカード等の識別カードの情報を読み込むカードリーダ８と、顔照合装置９０の起動・停止や本人識別情報としてのＩＤ番号やパスワード等を入力する操作手段９と、登録された顔画像データを格納する顔画像記憶手段としてのハードディスク等からなる顔画像データベース１０と、カメラ３〜顔画像データベース１０が接続される制御手段２０等を備えている。   As shown in FIGS. 1 and 2, the face matching device 90 according to the present embodiment is provided at the height position of the face of the person to be photographed 2 on the casing 1 formed in the shape of a quadrangular prism and the front surface 1 a of the casing 1. The window 1b, the camera 3 as the photographing means installed in the casing 1 behind the window 1b, the light direction detecting means 4 installed in the upper part of the casing 1, and the window 1b. Standing direction detecting means 5 installed on the side for detecting the standing direction of the subject 2, display means 6 installed on the lower side of the standing direction detecting means 5 for displaying a photographed face image and the like, and display means 6, a guide unit 7 installed under the guide unit 6 for guiding the standing position to the subject 2, a card reader 8 installed under the guide unit 7 for reading information of an identification card such as an IC card, and a face matching device 90. Operation means 9 for inputting the ID number, password, etc., as the identification information The face image database 10 comprising a hard disk or the like as a face image storing means for storing the face image data, and a control means 20 such as a camera 3 face image database 10 is connected.

顔画像データベース１０には、予め、登録者の顔画像及び顔の特徴量等の顔画像データが、本人識別情報やパスワード等に対応させて格納（記憶）されている。   In the face image database 10, face image data such as a registrant's face image and facial feature amount are stored (stored) in advance in association with the identification information, password, and the like.

制御手段２０は、操作手段９、光方向検出手段４、立ち方向検出手段５及びカードリーダ８からの入力信号に基づいて、案内手段７、表示手段６、カメラ３及び顔画像データベース１０等を制御し、顔画像の撮影及び顔の特徴量を含む顔画像データの作成と、予め顔画像データベース１０に記憶された顔画像データとの照合を行い、本人であるか否かの判別信号を、通信インターフェース１２を介して、入退室管理装置、玄関自動ドア、自動販売機等の制御装置に送信する。   The control unit 20 controls the guide unit 7, the display unit 6, the camera 3, the face image database 10, and the like based on input signals from the operation unit 9, the light direction detection unit 4, the standing direction detection unit 5, and the card reader 8. Then, the face image data including face image shooting and face feature amount creation is collated with face image data stored in the face image database 10 in advance, and a determination signal as to whether or not the person is the person is transmitted. The data is transmitted to a control device such as an entrance / exit management device, an entrance automatic door, or a vending machine via the interface 12.

図３−１に示すように、顔照合装置９０が屋外や窓際等に設置され、被撮影者２の後方に太陽や外灯等の光源３０が位置するときや、夜間及び曇り・雨のときのように方向性をもつ光がないときは、カメラ３で被撮影者２を撮影すると、一様な明るさの適切な顔画像が得られる。   As shown in FIG. 3A, when the face matching device 90 is installed outdoors or near a window and the light source 30 such as the sun or outdoor light is located behind the subject 2, or at night, cloudy or rainy Thus, when there is no directional light, an appropriate face image with uniform brightness can be obtained by photographing the subject 2 with the camera 3.

図３−２に示すように、光源３０が顔照合装置９０の斜め前方に位置するとき、実線で示すように顔照合装置９０の正面に立つ被撮影者２を撮影すると、顔画像に影ができてしまい、照合に適切な顔画像が得られない。そこで、本実施例の顔照合装置９０は、被撮影者２を、鎖線で示すように、顔照合装置９０に対して光源３０と同じ方向に立つように案内し、被撮影者２が、光源３０と同じ方向に立ったことを検出した後に撮影するようにする。   As shown in FIG. 3-2, when the light source 30 is located obliquely in front of the face matching device 90 and a subject 2 standing in front of the face matching device 90 is photographed as indicated by a solid line, a shadow is produced on the face image. As a result, a face image suitable for collation cannot be obtained. Therefore, the face collation apparatus 90 of the present embodiment guides the person to be photographed 2 to stand in the same direction as the light source 30 with respect to the face collation apparatus 90 as indicated by a chain line, and the person to be photographed 2 The camera shoots after detecting that it has stood in the same direction as 30.

図４−１及び図４−２に示すように、カメラ３の前方の最も明るい光の方向（光源３０の方向）を検出する光方向検出手段４は、筐体１の前面１ａに設置され縦長スリット４ｂを有するスリット板４ａと、筐体１内のスリット板４ａの後方に「コ」字形に配置された８枚の縦長短冊状の光センサ（太陽電池セル、ＣＣＤ、照度センサ等）４C1〜４C8とから構成されている。光センサ４C1〜４C8は、「コ」字状でなく、半円弧状に配置してもよい。 As shown in FIGS. 4A and 4B, the light direction detection unit 4 that detects the direction of the brightest light ahead of the camera 3 (the direction of the light source 30) is installed on the front surface 1 a of the housing 1 and is vertically long. A slit plate 4a having a slit 4b and eight vertically long photosensors (solar cell, CCD, illuminance sensor, etc.) 4 C1 arranged in a “U” shape behind the slit plate 4a in the housing 1 ~ 4 It is composed of C8 . The optical sensors 4 C1 to 4 C8 may be arranged in a semicircular shape instead of the “U” shape.

図４−２に示すように、光源３０が、顔照合装置９０側からみて右側の浅い角度に位置するときは、光源３０からの光は、縦長スリット４ｂを通って光センサ４C1に入射し、光センサ４C1に他の光センサよりも高い電圧を発生させる。光源３０が右側から左側へ移動するにつれて、高い電圧を発生させる光センサが４C1→４C8まで移動し、高い電圧を発生している光センサを検出することにより、光源３０の方向を検出することができる。 As shown in FIG. 4B, when the light source 30 is positioned at a shallow angle on the right side when viewed from the face matching device 90 side, the light from the light source 30 enters the optical sensor 4 C1 through the longitudinal slit 4b. The optical sensor 4 C1 generates a higher voltage than the other optical sensors. As the light source 30 moves from the right side to the left side, the photosensor generating a high voltage moves from 4 C1 to 4 C8, and detects the photosensor generating the high voltage, thereby detecting the direction of the light source 30. be able to.

例えば、光センサ４C6が高い電圧を発生しているときは、光源３０は、図３−２に鎖線で示す方向に位置していることがわかる。光源３０の左右の移動に伴い光源３０が上下に移動しても光を検出できるように、光センサ４C1〜４C8の縦方向の長さは、縦長スリット４ｂの長さよりも長く形成されている。 For example, when the optical sensor 4 C6 generates a high voltage, it can be seen that the light source 30 is positioned in the direction indicated by the chain line in FIG. The vertical lengths of the optical sensors 4 C1 to 4 C8 are formed longer than the length of the vertical slit 4b so that light can be detected even when the light source 30 moves up and down as the light source 30 moves left and right. Yes.

被撮影者２の顔画像を撮影する撮影手段としてのカメラ３は、略１８０°の旋回機構付のＣＣＤカメラやデジタルビデオカメラ等を用いる。ただし、１８０°カメラ等の広角カメラを用いれば、旋回機構は不要である。   As the camera 3 as a photographing means for photographing the face image of the person 2 to be photographed, a CCD camera or a digital video camera with a turning mechanism of approximately 180 ° is used. However, if a wide-angle camera such as a 180 ° camera is used, a turning mechanism is unnecessary.

被撮影者２を、最も明るい光の方向に立つように案内する案内手段としての光点滅器７は、筐体１の前面１ａに設置した半円厚板状の取付台７ａと、取付台７ａの外周部に設置された８個のＬＥＤ７C1〜７C8とから構成されている。ＬＥＤ７C1〜７C8は、それぞれ光センサ４C1〜４C8と、制御手段２０を介して電気的に関係付けられ、例えば、光源３０からの光を受けて光センサ４C2が高い電圧を発生すると、光源３０の方向に設置されたＬＥＤ７C2が点灯し、被撮影者２をＬＥＤ７C2に対向する方向位置、すなわち光源３０が位置する方向位置に立つように案内する。 An optical flasher 7 as a guide means for guiding the subject 2 to stand in the brightest light direction includes a semicircular plate-like mounting base 7a installed on the front surface 1a of the housing 1, and a mounting base 7a. It is composed of eight LEDs 7 C1 to 7-C8 Metropolitan disposed on the outer periphery of the. The LEDs 7 C1 to 7 C8 are electrically related to the optical sensors 4 C1 to 4 C8 via the control unit 20, respectively. For example, when the optical sensor 4 C2 receives a light from the light source 30 and generates a high voltage. The LED 7 C2 installed in the direction of the light source 30 is turned on, and the subject 2 is guided to stand in a direction position facing the LED 7 C2 , that is, a direction position where the light source 30 is located.

また、光センサ４C1〜４C8からの信号に基づいて、制御手段２０によりカメラ３の旋回機構を制御してカメラ３を光源３０の方向へ向ける。カメラ３が光源３０の方向を向くので、被撮影者２にカメラ３のレンズに正対して立つように案内することにより、カメラ３に光点滅器７の代用をさせることができる。このようにすれば、光点滅器７は不要となる。 Further, based on the signals from the optical sensors 4 C1 to 4 C8 , the control unit 20 controls the turning mechanism of the camera 3 to direct the camera 3 toward the light source 30. Since the camera 3 faces the direction of the light source 30, the camera 3 can be substituted for the light flasher 7 by guiding the subject 2 to stand facing the lens of the camera 3. In this way, the light flasher 7 becomes unnecessary.

被撮影者２が案内手段７に案内されて立った方向を検出する立ち方向検出手段５は、略１８０°の旋回機構付の赤外線発光部及び受光部（又は超音波発振部及び受振部）を有し、略１８０°往復旋回しながら赤外線（超音波）を前方に照射し、被撮影者２から反射される赤外線（超音波）を受光部（受振部）で受光（受振）し、受光部（受振部）が反射光（反射超音波）を受光（受振）した旋回角度から被撮影者２の立った方向を検出する。受光部が反射された赤外線を受光する旋回角度には、被撮影者の横幅により幅があるので、受光した旋回角度幅の中心値を立った方向とする。   The standing direction detecting means 5 for detecting the direction in which the subject 2 is guided by the guiding means 7 includes an infrared light emitting part and a light receiving part (or an ultrasonic wave oscillating part and a vibration receiving part) with a rotation mechanism of approximately 180 °. And receiving infrared rays (ultrasonic waves) forward while reciprocating approximately 180 °, and receiving (receiving) infrared rays (ultrasound) reflected from the subject 2 by a light receiving portion (vibrating portion). The direction in which the subject 2 stands is detected from the turning angle at which the (vibration receiving unit) receives (receives) reflected light (reflected ultrasonic waves). Since the turning angle at which the light receiving unit receives the reflected infrared light has a width depending on the lateral width of the subject, the center value of the received turning angle width is set as the standing direction.

表示手段６は、液晶表示装置等で構成され、時刻、「カードをカードリーダに挿入し暗証番号を入力して下さい。」、「下で点灯しているランプの方向位置にカメラに向かって４０ｃｍぐらい離れて立って下さい。」、「カメラのレンズの正面に４０ｃｍぐらい離れて立って下さい。」、「その位置で静止して下さい」等の案内文、撮影された顔画像及び顔照合結果等を表示する。   The display means 6 is composed of a liquid crystal display device or the like, and the time, “Please insert the card into the card reader and enter the password.”, “40 cm toward the camera in the direction of the lamp lit below. Please stand up "," Stand 40cm away from the front of the camera lens "," Please stand still ", etc., taken face images and face verification results, etc. Is displayed.

カードリーダ８は、被撮影者２が挿入した本人の識別カードの情報を読み込み、顔画像記憶手段としての顔画像データベース１０から、識別カードの情報に基づいて被撮影者２の記憶されている顔画像データを呼び出すようにする。   The card reader 8 reads the information of the identification card of the person inserted by the photographed person 2 and stores the face of the photographed person 2 based on the information of the identification card from the face image database 10 as the face image storage means. Call image data.

次に、図５を参照して、ＣＰＵ及び制御プログラムを格納したメモリ等を備えた制御手段２０の制御による顔照合手順を説明する。操作手段９を操作して顔照合装置９０を起動させると、制御手段２０は、光方向検出手段４からの信号に基づいて、カメラ３の前方の最も明るい光の方向を検出するとともに、表示手段６に、「カードをカードリーダに挿入し暗証番号を入力して下さい。」と案内文を表示させる。（ステップ１）。   Next, with reference to FIG. 5, a face collation procedure under the control of the control means 20 including a CPU and a memory storing a control program will be described. When the operation unit 9 is operated to activate the face collation device 90, the control unit 20 detects the brightest light direction ahead of the camera 3 based on the signal from the light direction detection unit 4, and the display unit. 6, the guidance text “Please insert the card into the card reader and enter your PIN” is displayed. (Step 1).

暗証番号が入力されると、制御手段２０は、案内手段としての光点滅器７の、最も明るい光の方向に位置するＬＥＤを点灯させ、カメラ３を旋回させて同じ方向に向け、表示手段６に、「下で点灯しているランプの方向位置にカメラに向かって４０ｃｍぐらい離れて立って下さい。」と案内文を表示させる（ステップ２）。   When the personal identification number is input, the control means 20 turns on the LED located in the direction of the brightest light of the light flasher 7 serving as the guide means, turns the camera 3 in the same direction, and displays the display means 6. Then, a guidance sentence is displayed ("Stand 40cm away from the camera in the direction of the lamp lit below") (Step 2).

次に、制御手段２０は、立ち方向検出手段５を１８０°旋回させ、被撮影者２の立っている方向（位置）を検出し（ステップ３）、被撮影者２が最も明るい光の方向に立っているか否かを判別する（ステップ４）。ステップ４が否定されれば、ステップ３に戻り、ステップ３→ステップ４を繰返す。ステップ４が肯定されれば、表示手段６に、「その位置で静止して下さい。」と表示させ、次のステップ５に進む。   Next, the control means 20 turns the standing direction detection means 5 by 180 ° to detect the standing direction (position) of the person to be photographed 2 (step 3), and the person to be photographed 2 is in the brightest light direction. It is determined whether or not the user is standing (step 4). If step 4 is negative, the process returns to step 3, and step 3 → step 4 is repeated. If step 4 is affirmed, the display means 6 displays "Please stand still at that position."

ステップ５では、カメラ３を操作して顔画像を撮影させ、顔の特徴量を含む顔画像データを作成し、制御手段２０のメモリに格納するとともに、表示手段６に撮影された顔画像を表示させる。   In step 5, the face image is photographed by operating the camera 3, face image data including the facial feature amount is created, stored in the memory of the control means 20, and the photographed face image is displayed on the display means 6. Let

次に、ステップ６で、カードリーダ８から入力された識別カードの情報に基づいて顔画像データベース１０から被撮影者２の予め記憶された顔画像データを呼び出し、ステップ５で作成した顔画像データと照合し、顔画像データが一致するか否かを判別する。   Next, in step 6, the face image data stored in advance of the subject 2 is called from the face image database 10 based on the identification card information input from the card reader 8, and the face image data created in step 5 Collation is performed to determine whether the face image data match.

ステップ６が否定されれば、表示手段６に「記憶された顔画像と一致しないので本人と認められません。」と表示（ステップ７）させ、肯定されれば、「記憶された顔画像と一致するので本人と認めます。」と表示（ステップ８）させ、本人であるか否かの判別信号を、通信インターフェース１２を介して、入退室管理装置、玄関自動ドア、自動販売機等の制御装置に送信（ステップ９）し、顔照合作業を終了する。   If the result of step 6 is negative, the display means 6 is displayed (step 7) as “It does not match the stored face image and is not recognized as the person.” If the result is affirmative, “the stored face image and "I agree with the person because they match." Is displayed (step 8), and a signal for determining whether or not the person is is controlled via the communication interface 12 to the entrance / exit management device, entrance door, vending machine, etc. The information is transmitted to the apparatus (step 9), and the face matching operation is completed.

なお、上記の実施例では、カードリーダ８から入力された識別カードの情報に基づいて顔画像データベース１０から被撮影者２の記憶された顔画像データを呼び出すようにしたが、識別カードやカードリーダ８を設けずに、撮影された被撮影者の顔画像データと、顔画像記憶手段に記憶された全ての顔画像データとを照合し、被撮影者が記憶された者であるか否かを判別するようにしてもよい。   In the above embodiment, the face image data stored in the photographed person 2 is called from the face image database 10 based on the information of the identification card input from the card reader 8. 8, the photographed face image data of the photographed person is compared with all the face image data stored in the face image storage means to determine whether the photographed person is stored. You may make it discriminate | determine.

また、顔画像記憶手段として顔画像データベース１０を用いたが、識別カード内に記憶顔画像データを格納しておけば、識別カードを顔画像記憶手段とすることができる。また、顔画像データは、顔の特徴量データを用いずに、顔画像のみとしても照合を行うことができる。   Further, although the face image database 10 is used as the face image storage means, if the stored face image data is stored in the identification card, the identification card can be used as the face image storage means. Further, the face image data can be collated only as a face image without using the face feature data.

以上のように、本発明にかかる顔照合装置は、屋外や窓際等に設置される顔照合装置として有用であり、特に、照合精度を要求される顔照合装置に適している。   As described above, the face matching device according to the present invention is useful as a face matching device installed outdoors or near a window, and is particularly suitable for a face matching device that requires matching accuracy.

本発明にかかる顔照合装置の実施例の外観を示す斜視図である。It is a perspective view which shows the external appearance of the Example of the face collation apparatus concerning this invention. 顔照合装置の制御系統の構成を示す概略図である。It is the schematic which shows the structure of the control system of a face collation apparatus. 被撮影者が顔照合装置の前方正面に立って撮影される場合を示す平面図である。It is a top view which shows the case where a to-be-photographed person is image | photographed standing in front of the face collation apparatus. 被撮影者が顔照合装置の斜め前方に立って撮影される場合を示す平面図である。It is a top view which shows the case where a to-be-photographed object is image | photographed standing in front of the face collation apparatus diagonally. 光方向検出手段の斜視図である。It is a perspective view of a light direction detection means. 光方向検出手段の平面図である。It is a top view of a light direction detection means. 制御手段による顔照合の制御フローチャートである。It is a control flowchart of face collation by a control means.

符号の説明Explanation of symbols

２ 被撮影者
３ カメラ（撮影手段）
４ 光方向検出手段
５ 立ち方向検出手段
６ 表示手段
７ 案内手段
８ カードリーダ
９ 操作手段
１０ 顔画像データベース
１２ 通信インターフェース
２０ 制御手段
３０ 光源
９０ 顔照合装置 2 Subject 3 Camera (photographing means)
DESCRIPTION OF SYMBOLS 4 Light direction detection means 5 Standing direction detection means 6 Display means 7 Guide means 8 Card reader 9 Operation means 10 Face image database 12 Communication interface 20 Control means 30 Light source 90 Face collation apparatus

Claims (3)

予め記憶された顔画像と被撮影者の顔画像とを照合して本人認証を行なう顔照合装置において、
被撮影者の顔画像を撮影する撮影手段と、
前記撮影手段の前方の最も明るい光の方向を検出する光方向検出手段と、
検出された前記光の方向に基づいて、前記被撮影者を前記光の方向に立つように案内する案内手段と
を備えることを特徴とする顔照合装置。 In a face collation apparatus that performs personal authentication by collating a face image stored in advance with a face image of a subject,
Photographing means for photographing the face image of the subject;
A light direction detecting means for detecting the direction of the brightest light in front of the photographing means;
Guiding means for guiding the subject to stand in the direction of the light based on the detected direction of the light. 前記被撮影者が案内されて立った方向を検出する立ち方向検出手段と、
前記光方向検出手段で検出された光の方向と前記立ち方向検出手段で検出された被撮影者が立った方向とが略一致したときに、前記撮影手段が前記被撮影者の顔画像を撮影するよう制御する制御手段と
をさらに備えることを特徴とする請求項１に記載の顔照合装置。 Standing direction detection means for detecting a direction in which the subject is guided and standing;
When the direction of the light detected by the light direction detecting means and the direction where the subject stands detected by the standing direction detecting means substantially coincide, the photographing means takes a face image of the subject. The face collating apparatus according to claim 1, further comprising: a control unit that controls to do so. 前記撮影手段は旋回機構を有し、前記制御手段は、前記旋回機構を制御して、前記撮影手段を前記光方向検出手段で検出された最も明るい光の方向へ向けることを特徴とする請求項２に記載の顔照合装置。   The imaging unit includes a turning mechanism, and the control unit controls the turning mechanism to direct the imaging unit toward the brightest light direction detected by the light direction detecting unit. 2. The face matching device according to 2.
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