CN101877061A - Binoculus iris image acquiring method and device based on single camera - Google Patents
Binoculus iris image acquiring method and device based on single camera Download PDFInfo
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- CN101877061A CN101877061A CN200910050533XA CN200910050533A CN101877061A CN 101877061 A CN101877061 A CN 101877061A CN 200910050533X A CN200910050533X A CN 200910050533XA CN 200910050533 A CN200910050533 A CN 200910050533A CN 101877061 A CN101877061 A CN 101877061A
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Abstract
The invention relates to binoculus iris image acquiring method and device based on a single camera. The binoculus iris image acquiring device is provided with a camera; the camera adopts a dual feedback mechanism of combination of a central symmetry type pitching platform, a transflective filter lens and a liquid crystal display screen, also adopts a double-contrast mirror surface for guiding the sight of a user and a three-color LED for indicating an acquiring distance and has the function of flickering and simulating pupils to shrink; and the invention overcomes the defect of difficult alignment of user sight of a monocular acquiring device, solves the problems of more complex structure and higher cost and manufacture process requirement on a binoculus acquiring device, and ensures that the iris image device has simple and easy structure and rapid and accurate acquiring process.
Description
Technical field
The present invention relates to a kind of Binoculus iris image acquiring method and device, belong to the technical field of optical device based on single camera.
Background technology
Related iris capturing device all adopts two cameras to carry out the iris of both eyes collection in the present disclosed patent, perhaps adopts single camera to carry out simple eye iris capturing.The former for the accuracy requirement of manufacture craft than higher, apparatus structure and production process more complicated, the required device cost is also higher; And the latter causes eyes to be difficult for aiming at acquisition camera because there be main looking and secondary problem of looking a difference in the user, and the matching program of user when gathering iris image proposed higher requirement, as need close the another eyes when gathering an iris.Therefore design a kind of not only easy-to-use structure but also uncomplicated iris capturing method and install significant.Adopt single camera to carry out method and device that iris of both eyes is gathered and the present invention proposes, and under the situation of not external any server or application software, device can independently be finished iris recognition and two kinds of functions of iris registration.
Summary of the invention
The present invention be directed to the existing deficiency of existing iris capturing device, a kind of method and device based on single camera iris of both eyes image proposed, solved the defective that simple eye harvester user sight line is difficult for aligning, it is complicated to have solved eyes harvester structure again, the problem that cost and manufacture craft are had relatively high expectations utilizes the timesharing of single camera eyes sight line alignment so to finish the collection of iris of both eyes step by step.This harvester adopts the wall built-up mounting means, has characteristics simple in structure, that cost is lower and easy-to-use.
Technical scheme of the present invention is: a kind of device of single camera iris of both eyes image comprises luffing mechanism platform, sight line bootstrap module (being made up of two contrast minute surfaces and liquid crystal display), gathers apart from indicating module (being made up of apart from pilot lamp infrared distance measurement module and three-color LED) and infrared LED lighting module and image-forming module (camera).
Ask for an interview harvester structural representation Fig. 1.
1) luffing mechanism platform
The camera luffing mechanism of general harvester is installed in the top of body, and the turning axle of the camera luffing mechanism of this device is positioned at the body center, and the formula that is centrosymmetric is installed.This design not only can obtain bigger luffing angle, so that adapt to the height of different user; And the area of pitching platform is bigger, can people's face camera be installed at this, adjusts shooting angle with the pitching platform, gathers facial image when gathering iris image, realizes many Feature Fusion or monitoring function.
Ask for an interview luffing mechanism synoptic diagram 2.
2) two contrast minute surfaces
Two contrast minute surfaces are made of jointly the front casing panel of half-reflection and half-transmission filter and black organic glass material, and both are in same mounting plane, so that the catoptron that the user sees in two minute surfaces is as smooth connection.Because the black organic glass more than 70%, therefore can not influence the infrared distance measurement module operate as normal behind the minute surface for the transmissivity of infrared band.
Ask for an interview two contrast minute surface synoptic diagram 3.
3) infrared distance measurement module and three-color LED are apart from pilot lamp
Infrared distance measurement module be positioned at camera directly over, measure the distance between the forehead directly over range finder module and the human eye.Two three-color LEDs are installed in the camera both sides apart from pilot lamp, be in same setting height(from bottom) with camera, to be divided into three intervals by the distance that the infrared distance measurement module records, and control the three-color LED correspondence in real time and send three kinds of coloured light of RGB, realize distance feedback thus the user.
More than three big parts, constituted Binoculus iris image acquiring device main body structure with liquid crystal display, camera, infrared illumination LED, and cooperatively interacted, finished following function jointly:
1) sight line guiding function
The sight line guiding function is mainly realized by two kinds of means: the firstth, and the dual feedback mechanism of half-reflection and half-transmission filter and liquid crystal; The secondth, two contrast minute surfaces.
The sight line guiding function of general iris capturing device mainly is that catoptron or display screen are realized, and this device has designed the dual feedback mechanism that the half-reflection and half-transmission filter combines with liquid crystal display.The course of work of dual feedback mechanism is described by following table.
Two minute surface material differences of two contrast minute surfaces, for the reflectivity difference of visible light wave range, so the mirror image that the user saw presents different contrasts: half-reflection and half-transmission filter imaging is clear, and brightness is big, the contrast height; Black organic glass panel imaging is fuzzy, and brightness is little, and contrast is low.The picture in hard contrast zone can be gathered by the camera behind the filter, forms iris image; The picture in low contrast zone is in outside the field range of camera, can not gather imaging.This design had both guaranteed that the user can see complete human face region in catoptron, more meet people's visual custom, make that again the iris region of being gathered is more outstanding in the user visual field, improved the accuracy that sight line is aimed at.
2) gather apart from deixis
Because camera lens has certain field depth, the user must enter this scope camera just can photograph enough iris image clearly.The infrared distance measurement module that adopts this device detects user's forehead to the distance between the harvester, and utilizes bluish-green red trichromatism LED that user's direction of motion is indicated: if be blue, then head leans on into harvester forward; If take on a red color, then head back is left harvester; If be green and flicker, the user should keep the current distance of head and harvester, and adjustment position, the head left and right sides makes the green spot of a certain side LED be in " following place between the eyebrows place ", green LED begins flicker simultaneously, attract user's sight line, stimulate pupil contraction, to guarantee that all iris textures can fully come out when the images acquired.
Ask for an interview and gather distance indication synoptic diagram 4.
Embodiment
, as application example the using method of this iris image acquiring device is described below with a user " registration " and " identification " flow process.
During registration:
The keeper selects registration left eye or iris of right eye by press function key in the registering functional district.To select the registration iris of right eye is example, and then the left side three-color LED of harvester is lighted, and the right side three-color LED extinguishes.Otherwise (, if select the registration iris of left eye, then the right side three-color LED of harvester is lighted, the left side three-color LED extinguishes.)
The luffing angle of user's manual adjusting device makes eyes catoptron picture and the left side three-color LED that can see oneself in the half-reflection and half-transmission filter.Then, the user should adjust longitudinal separation according to the color of LED: if be blue, then head leans on into harvester forward; If take on a red color, then head back is left harvester; If be green and flicker, the user should keep the current distance of head and harvester, and adjust green spot that position, the head left and right sides makes left side LED and be under the place between the eyebrows of binoculus picture center and locate (hereinafter to be referred as " following place between the eyebrows place "), thereby guarantee that the camera behind the filter aims at iris of right eye.Camera this moment infrared LED on every side illuminates the iris of right eye zone, and the infrared light that is reflected by iris of right eye passes the half-reflection and half-transmission filter, enters lens group, again through the lens group refraction, and final imaging on the image device of camera.
Image-guidance user action and the attitude of keeper by showing in real time on the liquid crystal display gathered so that cooperate.After collection was finished, the keeper pressed function button according to the operation indicating of liquid crystal display, and checks fie image quality is imported user profile and configuration, thereby finished the registration of iris of right eye.
Repeat above operating process, can finish the iris registration of another eyes (left eye).User's iris of both eyes all needs registration, so that improve the ease for use of device in the iris recognition process.
During identification:
The three-color LED of the harvester left and right sides is lighted simultaneously, the user as mentioned above, adjust the luffing angle of harvester and the distance between head and the harvester, and adjust position, the head left and right sides and make the LED green spot of any side be in " following place between the eyebrows place ", thereby guarantee that the camera behind the filter aims at the iris of a certain eyes.Camera this moment infrared LED on every side illuminates iris region, and the infrared light that is reflected by iris region passes the half-reflection and half-transmission filter, enters lens group, again through the lens group refraction, and final imaging on the image device of camera.This image feeds back matching result through the embedded program computing on liquid crystal display.
Through above process, any iris identification that device collects is passed through, and then the user has finished authentication, can regard as validated user.
Ask for an interview the schematic flow sheet 5 of iris image acquiring method.
Description of drawings
Fig. 1 is the harvester structural representation.
Fig. 2 is the luffing mechanism synoptic diagram.
Fig. 3 is two contrast minute surface synoptic diagram.
Fig. 4 gathers distance indication synoptic diagram.
Fig. 5 is the schematic flow sheet of iris image acquiring method.
Claims (5)
- A kind of Binoculus iris image acquiring method and device based on single camera, its characteristic is:1. adopt single camera to carry out the method that iris of both eyes is gatheredThis harvester has a camera and a slice half-reflection and half-transmission filter, and the user can see the binoculus picture simultaneously in filter, aims at by selecting a certain three-color LED to carry out sight line, and camera can be gathered the image of any iris.During registration: the keeper selects to register left eye or iris of right eye, and then the three-color LED of correspondence position is lighted, and the user only need keep three-color LED to be under the place between the eyebrows of two glasses pictures centers in catoptron locating, can make corresponding iris by camera collection, finish registration.During identification: two three-color LEDs are lighted simultaneously, and the user keeps any one three-color LED to be in the place between the eyebrows center of mirror image in catoptron, and this moment, no matter left eye or iris of right eye were passed through by camera collection and identification, and this usefulness is finished authentication per family.
- 2. the center symmetrical expression luffing mechanism of cameraThe camera luffing mechanism of general harvester is installed in the top of body, and the turning axle of the camera luffing mechanism of this device is positioned at the body center, and the formula that is centrosymmetric is installed.This design not only can obtain bigger luffing angle, so that adapt to the height of different user; And the area of pitching platform is bigger, can people's face camera be installed at this, adjusts shooting angle with the pitching platform, gathers facial image when gathering iris image, realizes many Feature Fusion or monitoring function.
- 3. the dual feedback mechanism that combines with liquid crystal display of half-reflection and half-transmission filterThe feedback mechanism of general harvester adopts catoptron or display screen, and this device has designed the dual feedback mechanism that the half-reflection and half-transmission filter combines with liquid crystal display.In the iris recognition process: before the collection, this device of liquid crystal display prompting user using method; During collection, the user adjusts attitude by the half-reflection and half-transmission filter, carries out sight line and aims at; After the collection, liquid crystal display output recognition result, and show that iris image provides reference for the user gathers next time.In the iris registration process: the user adjusts attitude by the half-reflection and half-transmission filter, carries out sight line and aims at; The keeper observes iris image by liquid crystal display, the input essential information, and guides user cooperates.
- 4. two contrast minute surfacesThe front casing panel of half-reflection and half-transmission filter and black organic glass material is in same mounting plane, so that the reflection image smooth connection that the user sees in two minute surfaces.Since the light reflectance difference of two minute surfaces, so mirror image presents different contrasts: the brightness of half-reflection and half-transmission filter imaging is big, the contrast height, and the brightness of black organic glass panel imaging is little, and contrast is low.The picture of hard contrast is the image-region of camera collection, and low-contrast picture camera is not gathered.This design had both guaranteed that the user can see complete human face region in catoptron, more meet people's visual custom, make that again the iris region of gathering is more outstanding, improved the accuracy that sight line is aimed at.
- 5. distance is gathered in the three-color LED indication, and has the flicker stimulatory functionGeneral harvester adopts the mode of voice to point out the user to gather distance, and this device has adopted bluish-green red trichromatism LED indication to gather distance: when the distance between user and the harvester was excessive, it is blue that LED is, and the prompting user is close forward; When the distance between user and the harvester was too small, LED took on a red color, the prompting user backward away from; When the user was in the acquisition range of device, it is green that LED is, and the prompting user keeps current attitude motionless, and green LED begins flicker simultaneously, attracts user's sight line, stimulates pupil contraction.Adopt three-color LED to indicate and gather, be convenient to user's rapid adjustment attitude, improve iris capturing speed apart from more directly perceived, and LED flicker stimulation pupil contraction, help collecting unscreened iris image.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102708357A (en) * | 2012-04-12 | 2012-10-03 | 北京释码大华科技有限公司 | Single-image sensor based double-eye iris recognition equipment |
| CN103593647A (en) * | 2013-10-21 | 2014-02-19 | 王晓鹏 | Biological characteristic imaging method and equipment |
| CN104776801A (en) * | 2014-01-14 | 2015-07-15 | 索尼公司 | Information processing apparatus and information processing method |
| CN105678228A (en) * | 2014-04-04 | 2016-06-15 | 沈洪泉 | Iris identification optical imaging module for mobile safety identity authentication, and application method thereof |
| CN105787435A (en) * | 2016-02-03 | 2016-07-20 | 北京天诚盛业科技有限公司 | Indication method and apparatus for iris acquisition |
| CN106203410A (en) * | 2016-09-21 | 2016-12-07 | 上海星寰投资有限公司 | A kind of auth method and system |
| CN106886742A (en) * | 2015-12-16 | 2017-06-23 | 东莞市中控电子技术有限公司 | A kind of method for collecting iris and iris collection device |
| CN107729831A (en) * | 2017-10-09 | 2018-02-23 | 北京无线电计量测试研究所 | A kind of embedded iris recognition terminal including its identifying system and recognition methods |
| CN110287687A (en) * | 2019-06-26 | 2019-09-27 | Oppo广东移动通信有限公司 | Register method, register device, helmet and storage medium |
| WO2020042188A1 (en) * | 2018-08-31 | 2020-03-05 | 华为技术有限公司 | Image capturing method and device |
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2009
- 2009-04-30 CN CN200910050533XA patent/CN101877061A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102708357A (en) * | 2012-04-12 | 2012-10-03 | 北京释码大华科技有限公司 | Single-image sensor based double-eye iris recognition equipment |
| CN103593647A (en) * | 2013-10-21 | 2014-02-19 | 王晓鹏 | Biological characteristic imaging method and equipment |
| CN104776801B (en) * | 2014-01-14 | 2018-12-28 | 索尼公司 | Information processing unit and information processing method |
| CN104776801A (en) * | 2014-01-14 | 2015-07-15 | 索尼公司 | Information processing apparatus and information processing method |
| CN105678228A (en) * | 2014-04-04 | 2016-06-15 | 沈洪泉 | Iris identification optical imaging module for mobile safety identity authentication, and application method thereof |
| CN105678228B (en) * | 2014-04-04 | 2017-11-28 | 贵阳科安科技有限公司 | Iris recognition optical imagery module and application method for safety identification authentication |
| CN106886742A (en) * | 2015-12-16 | 2017-06-23 | 东莞市中控电子技术有限公司 | A kind of method for collecting iris and iris collection device |
| CN105787435A (en) * | 2016-02-03 | 2016-07-20 | 北京天诚盛业科技有限公司 | Indication method and apparatus for iris acquisition |
| CN106203410A (en) * | 2016-09-21 | 2016-12-07 | 上海星寰投资有限公司 | A kind of auth method and system |
| CN106203410B (en) * | 2016-09-21 | 2023-10-17 | 上海星寰投资有限公司 | Identity verification method and system |
| CN107729831A (en) * | 2017-10-09 | 2018-02-23 | 北京无线电计量测试研究所 | A kind of embedded iris recognition terminal including its identifying system and recognition methods |
| WO2020042188A1 (en) * | 2018-08-31 | 2020-03-05 | 华为技术有限公司 | Image capturing method and device |
| CN110287687A (en) * | 2019-06-26 | 2019-09-27 | Oppo广东移动通信有限公司 | Register method, register device, helmet and storage medium |
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Application publication date: 20101103 |