WO2012133110A1 - 認証装置、及び認証方法 - Google Patents
認証装置、及び認証方法 Download PDFInfo
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- WO2012133110A1 WO2012133110A1 PCT/JP2012/057346 JP2012057346W WO2012133110A1 WO 2012133110 A1 WO2012133110 A1 WO 2012133110A1 JP 2012057346 W JP2012057346 W JP 2012057346W WO 2012133110 A1 WO2012133110 A1 WO 2012133110A1
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- finger
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/117—Identification of persons
- A61B5/1171—Identification of persons based on the shapes or appearances of their bodies or parts thereof
- A61B5/1172—Identification of persons based on the shapes or appearances of their bodies or parts thereof using fingerprinting
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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
- G06V40/13—Sensors therefor
- G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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
Definitions
- the present invention relates to an authentication device and an authentication method.
- Patent Document 1 the color of an image obtained by reflecting the visible light of the counterfeit determination illumination to the subject does not match the color of the finger image that is obtained in the same manner and registered in advance in the data recording unit.
- the device collates the feature points obtained from the transmitted light by irradiating the finger with near-infrared light of personal identification illumination and the feature points of the finger image that are obtained in the same way and registered in advance in the data recording means.
- Personal identification is a method for determining a subject as a fake finger.
- Patent Document 2 white light and infrared light are selectively switched, white light is reflected on the surface layer of a finger to obtain a fingerprint image, and infrared light is incident on the inside of the finger to scatter and vein image. And a device for authenticating a specific person by comparing each with a registered fingerprint image and a registered vein image.
- Patent Document 3 discloses an apparatus for judging a forged finger by comparing a fingerprint image with high sensitivity and a fingerprint image with low sensitivity.
- Patent Document 4 describes an apparatus that determines whether a finger vein image is a living body based on a difference between finger vein images captured with transmitted light having different wavelengths.
- Patent Document 5 describes a method of using a prism as a fingerprint authentication scanner to enhance contrast.
- Patent Documents 1 to 4 described above can detect forgery of the finger with high accuracy by comparing the reflected light image and the transmitted light image obtained from the same finger.
- Patent Document 5 can obtain an image having a high contrast necessary for collation of fingerprints. However, since only an image of a portion in contact with the prism can be obtained, the technique of Patent Documents 1 to 4 described above is used. Cannot be detected with high accuracy.
- an object of the present invention is to provide an authentication device capable of acquiring a fingerprint image having sufficient contrast for collating a fingerprint and a natural image of a finger close to visual observation. It is to provide an authentication method.
- the present invention includes a prism having a square quadrangle trapezoid, and the prism of the square quadrangle trapezoid is arranged so that a bottom surface side of the two parallel planes of the square quadrangle trapezoid is a finger placement surface side.
- a first imaging means that is disposed below the upper surface parallel to the bottom surface and that captures an image of a finger that has passed through the upper surface;
- An authentication apparatus comprising: a light source that emits light to at least one side surface of a set; and a second imaging unit that captures an image of a finger that has passed through a second set of side surfaces of the two sets of side surfaces.
- the present invention is arranged such that the bottom surface side of the two parallel surfaces of the approximate quadrilateral trapezoid is the finger placement surface side, and the first of the two opposing side surfaces of the approximate quadrilateral trapezoid Light is applied from at least one side of the set of side surfaces, and an image of a finger transmitted through the top surface is taken from below the top surface parallel to the bottom surface, and the second set of side surfaces of the two sets of side surfaces.
- the present invention it is possible to acquire a fingerprint image having sufficient contrast for collating a fingerprint and a natural image of a finger that is close to visual observation.
- FIG. 1 is a top view of the biometric authentication device according to the first embodiment.
- FIG. 2 is a cross-sectional view of MN of the biometric authentication device.
- FIG. 3 is a cross-sectional view taken along line XY of the biometric authentication apparatus.
- FIG. 4 is a diagram for explaining the regular quadrangular pyramid-shaped prism 10 used in the biometric authentication device according to the first embodiment.
- FIG. 5 is a diagram for explaining the first embodiment.
- FIG. 6 is a diagram for explaining the first embodiment.
- FIG. 7 is a cross-sectional configuration diagram of an authentication apparatus according to the second embodiment.
- FIG. 8 is a cross-sectional configuration diagram of an authentication apparatus according to the second embodiment.
- FIG. 1 is a top view of the biometric authentication device according to the first embodiment
- FIG. 2 is a biometric authentication device.
- FIG. 3 is a cross-sectional view taken along line XY of the biometric authentication device.
- the biometric authentication device 1 is provided with a regular quadrangular pyramidal prism 10.
- FIG. 4 is a diagram for explaining the regular quadrangular pyramid-shaped prism 10 used in the biometric authentication device according to the first embodiment.
- the regular quadrangular pyramidal prism 10 has one surface a (bottom surface (surface having a large area)) of two parallel flat surfaces a and b as a surface on which a fingerprint is placed.
- the prism 10 is a regular quadrangular pyramid trapezoidal shape
- the prism 10 may not be a regular quadrangular pyramid trapezoidal shape, and the shape may be changed without departing from the characteristics of the present invention. May be.
- a first imaging unit 11 that captures an image of the finger 2 that has passed through the surface b (upper surface (surface having a small area)) of the prism 10 is provided below the surface b of the prism 10.
- the imaging unit 11 converts an input image into a digital signal and outputs it, and an image sensor made up of a CCD, a CMOS, or the like can be used.
- the imaging unit 11 captures a natural image of a finger with light transmitted through the surface b of the prism 10 and obtains an image for determining a forged finger.
- Light sources 13 and 14 for irradiating light to the fingerprint portions of the finger 2 are provided on the opposite side surfaces c and d of the prism 10, respectively.
- the light sources 13 and 14 are visible light, for example, white LEDs that emit white light.
- a second imaging unit 12 that captures an image of the fingerprint portion of the finger 2 that has passed through the side surface e is provided on one side surface e of the side surfaces e and f that face the prism 10.
- the imaging unit 12 converts an input image into a digital signal and outputs it, and an image sensor made up of a CCD, a CMOS, or the like can be used.
- the imaging unit 12 captures an image for fingerprint collation with a high contrast of the fingerprint portion of the finger 2 (the fingerprint peaks and valleys are clear) by the light transmitted through the side surface e.
- a black shading plate 15 that does not transmit light is provided on the surface f. Due to the light shielding plate 15, the fingerprint collation image photographed by the imaging unit 12 becomes a higher contrast image.
- the black light shielding plate 15 is provided on the surface f of the prism 10, but the outer surface of the surface f of the prism 10 may be painted black.
- the finger 2 is loaded on the surface a of the prism 10 which is the loading surface.
- the light sources 13 and 14 emit light, and the surfaces c and d of the prism 10 are irradiated with light for photographing, respectively.
- the imaging unit 11 captures a natural image of the finger with light transmitted through the surface b of the prism 10.
- An example of an image captured by the imaging unit 11 is shown in FIG. As can be seen from FIG. 5, it can be seen that a natural image of the finger 2 including the fingerprint portion is captured.
- the imaging unit 12 captures an image of the fingerprint portion of the finger 2 with the light transmitted through the surface e.
- An example of an image captured by the imaging unit 12 is shown in FIG. As can be seen from FIG. 6, it can be seen that an image with a high contrast of the fingerprint region (a sharp peak and valley of the fingerprint) is taken.
- fingerprint collation and authentication can be performed.
- the authentication device has a high contrast used for comparing a fingerprint with a natural image close to the eye for determining whether a forged fingerprint film or tape is used.
- An image can be obtained by photographing a finger once.
- FIG. 7 is a cross-sectional configuration diagram of the authentication apparatus according to the second embodiment.
- an infrared light source 20 is provided in the authentication device.
- the infrared light source 20 is provided on the light shielding plate 21 so that infrared light does not enter the prism 10 as much as possible.
- the imaging unit 12 is provided with an infrared transmission filter 22. By adopting such a configuration, the imaging unit 12 captures an image of a fingerprint part having a high contrast (a fingerprint crest and valley are clear) compared to a light source 13 or 14 such as white light alone. Can do.
- an infrared light source 24 for irradiating the base portion of the finger 2 may be provided.
- the infrared light source 24 that irradiates the base portion of the finger 2 an image of a bright fingerprint portion can also be obtained on the base side of the fingerprint. Since infrared light is absorbed by blood hemoglobin, the blood vessel pattern of the finger 2 can also be imaged.
- an infrared cut filter 23 is provided in the imaging unit 11 for photographing a natural image for determining whether a forged fingerprint film or tape is used.
- the light incident on the imaging unit 11 is cut by infrared rays by the infrared cut filter 23, and the imaging unit 11 can capture a natural image of the fingerprint portion of the finger 2 by visible light from the light sources 13 and 14.
- a high-contrast fingerprint image is obtained by light scattered and transmitted inside the finger by an infrared light source.
- pulsation due to blood flow and changes in the image due to the subcutaneous tissue can be observed, and it can be used for biometric discrimination to perform more accurate biometric discrimination.
- the approximately quadratic thrust trapezoidal prism is disposed such that the bottom surface side is the finger mounting surface side of the two parallel surfaces of the approximately quadratic thrust trapezoid.
- a first imaging unit that is disposed below an upper surface parallel to the bottom surface and captures an image of a finger that has passed through the upper surface;
- a light source for irradiating light to at least one side surface of the first set of the two sets of opposing side surfaces of the approximate square trapezoidal shape;
- An authentication apparatus comprising: a second imaging unit that captures an image of a finger that has passed through the second set of side surfaces out of the two sets of side surfaces.
- the said prism is an authentication apparatus of Additional remark 1 which is a regular square thrust stand.
- the bottom surface side of the two parallel surfaces of the approximate square trapezoidal shape is arranged to be the finger placement surface side, Irradiating light from at least one of the side surfaces of the first set of the two sets of opposing side surfaces of the approximate quadrangle, Taking an image of a finger that has passed through the top surface from below the top surface parallel to the bottom surface, Of the two sets of side surfaces, take an image of a finger that has passed through the second side surface, An authentication method for capturing a natural image of a finger and an image of a fingerprint region at the same time.
- the said prism is an authentication method of Additional remark 5 which is a regular square thrust stand.
- a fingerprint region is provided by providing a black plate on the surface of the second set of the prisms on the side facing the image capturing surface, or by setting the outer surface of the side to black.
- the visible light is irradiated from at least one side face of the first set side face, Irradiate the abdomen of the finger with infrared light, Cut infrared light out of the transmitted light that passes through the top surface parallel to the bottom surface, capture a natural image of the finger with visible light,
- the authentication according to any one of appendix 5 to appendix 7, wherein visible light is cut out of the transmission transmitted through the second set of side surfaces of the two sets of side surfaces, and an image of the fingerprint portion of the finger is captured with infrared light.
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Abstract
Description
第2の実施の形態を説明する。
前記概四角推台形のプリズムは、前記概四角推台形の平行な二面のうち底面側が指の載置面側となるように配設され、
前記底面と平行な上面の下方に配設され、前記上面を透過した指の画像を撮像する第1の撮像手段と、
前記概四角推台形の対向する二組の側面のうち、第1の組の側面の少なくとも一側面に光を照射する光源と、
前記二組の側面のうち、第2の組の側面を透過した指の画像を撮像する第2の撮像手段と
を有する認証装置。
である付記1に記載の認証装置。
付記1又は付記2に記載の認証装置。
前記第1の撮像手段に入射される赤外線光をカットする赤外線カットフィルタと、
前記第2の撮像手段に入射される可視光をカットする可視光カットフィルタと
を有する付記1から付記3のいずれかに記載の認証装置。
前記概四角推台形の対向する二組の側面のうち、第1の組の側面の少なくとも一側面から光を照射し、
前記底面と平行な上面の下方から、前記上面を透過した指の画像を撮像し、
前記二組の側面のうち、第2の組の側面を透過した指の画像を撮像し、
指の自然画像と、指紋部位の画像とを同時に撮像する
認証方法。
である付記5に記載の認証方法。
付記5又は付記6に記載の認証方法。
指の腹部に赤外線光を照射し、
前記底面と平行な上面を透過する透過光のうち赤外線光をカットし、可視光により指の自然画像を撮像し、
前記二組の側面のうち、第2の組の側面を透過する透過のうち可視光をカットし、赤外線光により指の指紋部の画像を撮像する
付記5から付記7のいずれかに記載の認証方法。
10 プリズム
11,12 撮像部
13,14 光源
15 遮光板
20,24 赤外線光源
21 遮光板
22 赤外線透過フィルタ
23 赤外線カットフィルタ
Claims (8)
- 概四角推台形のプリズムを有し、
前記概四角推台形のプリズムは、前記概四角推台形の平行な二面のうち底面側が指の載置面側となるように配設され、
前記底面と平行な上面の下方に配設され、前記上面を透過した指の画像を撮像する第1の撮像手段と、
前記概四角推台形の対向する二組の側面のうち、第1の組の側面の少なくとも一側面に光を照射する光源と、
前記二組の側面のうち、第2の組の側面を透過した指の画像を撮像する第2の撮像手段と
を有する認証装置。 - 前記プリズムは、正四角推台
である請求項1に記載の認証装置。 - 前記プリズムの前記第2の組の側面のうち、前記第2の撮像手段に設けられる側面と対向する側面に黒色板を設ける、又は、前記側面の外面を黒色とする
請求項1又は請求項2に記載の認証装置。 - 指の腹部に赤外線光を照射する赤外光源と、
前記第1の撮像手段に入射される赤外線光をカットする赤外線カットフィルタと、
前記第2の撮像手段に入射される可視光をカットする可視光カットフィルタと
を有する請求項1から請求項3のいずれかに記載の認証装置。 - 概四角推台形の平行な二面のうち底面側を、指の載置面側となるように配設し、
前記概四角推台形の対向する二組の側面のうち、第1の組の側面の少なくとも一側面から光を照射し、
前記底面と平行な上面の下方から、前記上面を透過した指の画像を撮像し、
前記二組の側面のうち、第2の組の側面を透過した指の画像を撮像し、
指の自然画像と、指紋部位の画像とを同時に撮像する
認証方法。 - 前記プリズムは、正四角推台
である請求項5に記載の認証方法。 - 前記プリズムの前記第2の組の側面のうち、画像を撮像する面側と対向する側の面に黒色板を設ける、又は、前記側面の外面を黒色とすることにより、指紋部位の画像のコントラストを高める
請求項5又は請求項6に記載の認証方法。 - 前記概四角推台形の対向する二組の側面のうち、第1の組の側面の少なくとも一側面から可視光を照射し、
指の腹部に赤外線光を照射し、
前記底面と平行な上面を透過する透過光のうち赤外線光をカットし、可視光により指の自然画像を撮像し、
前記二組の側面のうち、第2の組の側面を透過する透過のうち可視光をカットし、赤外線光により指の指紋部の画像を撮像する
請求項5から請求項7のいずれかに記載の認証方法。
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013507459A JP5811372B2 (ja) | 2011-03-25 | 2012-03-22 | 認証装置、及び認証方法 |
| US14/007,177 US9886618B2 (en) | 2011-03-25 | 2012-03-22 | Authentication apparatus and authentication method |
| CN201280015009.9A CN103443822B (zh) | 2011-03-25 | 2012-03-22 | 验证设备和验证方法 |
| US15/854,217 US10956707B2 (en) | 2011-03-25 | 2017-12-26 | Authentication apparatus and authentication method |
| US16/124,815 US10922523B2 (en) | 2011-03-25 | 2018-09-07 | Authentication using prism |
| US16/124,914 US11010587B2 (en) | 2011-03-25 | 2018-09-07 | Authentication using prism |
| US16/124,721 US20190019004A1 (en) | 2011-03-25 | 2018-09-07 | Authentication using prism |
| US17/229,009 US11600104B2 (en) | 2011-03-25 | 2021-04-13 | Authentication using prism |
| US18/107,196 US11908232B2 (en) | 2011-03-25 | 2023-02-08 | Authentication using prism |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-068705 | 2011-03-25 | ||
| JP2011068705 | 2011-03-25 |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US14/007,177 A-371-Of-International US9886618B2 (en) | 2011-03-25 | 2012-03-22 | Authentication apparatus and authentication method |
| US15/854,217 Continuation US10956707B2 (en) | 2011-03-25 | 2017-12-26 | Authentication apparatus and authentication method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012133110A1 true WO2012133110A1 (ja) | 2012-10-04 |
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ID=46930838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2012/057346 Ceased WO2012133110A1 (ja) | 2011-03-25 | 2012-03-22 | 認証装置、及び認証方法 |
Country Status (4)
| Country | Link |
|---|---|
| US (7) | US9886618B2 (ja) |
| JP (2) | JP5811372B2 (ja) |
| CN (1) | CN103443822B (ja) |
| WO (1) | WO2012133110A1 (ja) |
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| JPWO2014119503A1 (ja) * | 2013-01-31 | 2017-01-26 | 日本電気株式会社 | 認証装置、認証用プリズム体及び認証方法 |
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| JP2011243042A (ja) | 2010-05-19 | 2011-12-01 | Nec Corp | 生体撮像装置、及び生体撮像方法 |
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| JP5950121B2 (ja) * | 2013-12-27 | 2016-07-13 | 日本電気株式会社 | 認証装置 |
| US10074005B2 (en) * | 2016-06-10 | 2018-09-11 | Hewlett Packard Enterprise Development Lp | Vascular pattern detection systems |
| JP2018005723A (ja) * | 2016-07-06 | 2018-01-11 | マクセルホールディングス株式会社 | 生体認証装置 |
| KR101816509B1 (ko) | 2016-08-03 | 2018-02-21 | 주식회사 슈프리마 | 위조 지문 판별 장치 및 그 제작 방법 |
| WO2019014801A1 (zh) | 2017-07-17 | 2019-01-24 | 深圳市汇顶科技股份有限公司 | 光学感应校正参数的确定方法、生物特征检测装置和电子终端 |
| US10235557B1 (en) * | 2018-01-08 | 2019-03-19 | Secugen Corporation | Method and apparatus for sensing fingerprint |
| CN108171858A (zh) * | 2018-02-13 | 2018-06-15 | 南京东屋电气有限公司 | 一种带有分离式红外图像采集装置的汽车门锁 |
| JP2020086749A (ja) * | 2018-11-21 | 2020-06-04 | 日本電気株式会社 | 撮像装置および撮像方法 |
| WO2020105578A1 (ja) * | 2018-11-21 | 2020-05-28 | 日本電気株式会社 | 撮像装置および撮像方法 |
| KR20210024310A (ko) | 2019-08-21 | 2021-03-05 | 삼성디스플레이 주식회사 | 지문 센서를 포함한 표시 장치 및 그의 지문 인증 방법 |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN103443822A (zh) | 2013-12-11 |
| JPWO2012133110A1 (ja) | 2014-07-28 |
| US11010587B2 (en) | 2021-05-18 |
| US20210232798A1 (en) | 2021-07-29 |
| JP6128351B2 (ja) | 2017-05-17 |
| US9886618B2 (en) | 2018-02-06 |
| US10922523B2 (en) | 2021-02-16 |
| JP2015228266A (ja) | 2015-12-17 |
| US20140023249A1 (en) | 2014-01-23 |
| US20190005299A1 (en) | 2019-01-03 |
| US11908232B2 (en) | 2024-02-20 |
| US20190019004A1 (en) | 2019-01-17 |
| US10956707B2 (en) | 2021-03-23 |
| US11600104B2 (en) | 2023-03-07 |
| JP5811372B2 (ja) | 2015-11-11 |
| CN103443822B (zh) | 2017-11-24 |
| US20230186676A1 (en) | 2023-06-15 |
| US20180121704A1 (en) | 2018-05-03 |
| US20190005298A1 (en) | 2019-01-03 |
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