CN101221619B - Adjustable photo-optics palm print image acquisition equipment - Google Patents
Adjustable photo-optics palm print image acquisition equipment Download PDFInfo
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- CN101221619B CN101221619B CN2007100000656A CN200710000065A CN101221619B CN 101221619 B CN101221619 B CN 101221619B CN 2007100000656 A CN2007100000656 A CN 2007100000656A CN 200710000065 A CN200710000065 A CN 200710000065A CN 101221619 B CN101221619 B CN 101221619B
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Abstract
The invention provides an adjustable optical photographing palm print image acquisition device which belongs to the optical photographing acquisition device. The device comprises a sealed box body which is divided into three layers, wherein the upper layer is for placing a palm, the middle layer is for placing a light source, a camera and a position adjusting mechanism of the light source and the camera, and the lower layer is for placing a power supply, a graphic acquisition card as well as electronic equipments like a light source brightness control regulating circuit, etc. A light source holder positioning plate is arranged between the middle layer and the lower layer, a plurality of light source holders perpendicular to the bottom surface of the box body are fixed on the light source holder positioning plate, each light source is a telescopic tube and is provided with a socket on the top end for assembling the light source. The invention provides a fully closed or half opened photographing environment, the number, position, angle and brightness of the light sources can be regulated independently, and the position of the camera can also be finely regulated, thereby obtaining high quality palm prints meeting various requirements.
Description
Technical field
The invention belongs to photo-optics Image Acquisition technology, relate in particular to a kind of based on photo-optical palm print image acquisition equipment.
Background technology
Living things feature recognition is as emerging identity authentication technique, is one of new and high technology of in the world tool prospect at present, belongs to international advanced subject.Palmmprint identification is an important branch of biometrics identification technology.Be used for the Palm Print Recognition System of authentication, obtaining of palmprint image is an importance, and it directly has influence on the complexity of subsequent treatment and the effect of result, and then influences discrimination, robustness and the performance of system.
The patent that up to the present, the identification of some palm print image acquisition equipments that give different ideas and palmmprint arranged.The research of online palmprint image acquiring method (comprising the design of the equipment of obtaining and assistant software) is a key issue in the palmmprint identification, wherein also there is not satisfactory solution so far based on photo-optical palmprint image acquisition methods, influence many factors of image acquisition equipment performance, comprise light source (type, color, light distribution), imaging system and palm locating device still remain further to be studied.Because palmprint image is subjected to external environment, quantity of light source, brightness and position, factor affecting such as camera position, angle very easily change, and this is very disadvantageous to palmmprint identification research and development, so need adjustment that collecting device can be precise and stable, control above-mentioned factor, and can reappear repeatedly.And on the other hand, different environments for use and application, or different recognition methodss all have special demands to palmprint image.Therefore the palmmprint collection experimental facilities that needs powerful regulating power flexibly is used for research and development of products.In the existing palmmprint collecting device, all there is the location out of true, structural instability, shortcoming such as tunable component is few, and range of adjustment is little.The number of light sources that wherein topmost problem is an equipment is fixed, and is limited on the same plane, and brightness simultaneously is unadjustable.Such structure in use has a lot of limitation, because the shape of palm is a curved surface, there is complicated fluctuating in the zone at main streakline place, so need the quantity of light source be increased and decreased, and independence adjustment is carried out in the position of each light source and brightness just might obtain higher-quality palmprint image, existing equipment obviously can not satisfy this requirement.For continuing to carry out in a deep going way the palmmprint Study of recognition, it is imperative to design novel palm-print image capture equipment.
Summary of the invention
The purpose of this invention is to provide a kind ofly based on photo-optical palm print image acquisition equipment, this equipment can dynamically accurately be adjusted quantity of light source, position, angle and brightness, user-friendly and expansion.
Above-mentioned purpose of the present invention is achieved by the following technical solutions:
A kind of adjustable photo-optics palm print image acquisition equipment, comprise: a casing, box house is divided into three layers, the upper strata is for the top cover space of stretching into palm, light source and video camera and their position adjusting mechanism are placed in the middle layer, power supply is placed by lower floor, the figure capture card, and electronic equipment such as light-source brightness regulating circuit, between middle layer and lower floor, be provided with the light source bracket location-plate, on the light source bracket location-plate, fix several light source brackets vertical with tank floor, light source bracket is a telescopic tube, each light source bracket top is provided with a socket, is used to install light source, and the casing outside is provided with several light-source brightness adjusting knobs, described light-source brightness adjusting knob links to each other with the light-source brightness regulating circuit, and each knob links to each other with the light source of a light source bracket.
The top base of light source bracket is fixedlyed connected with light source bracket by a universal flexible pipe.
The light source bracket location-plate is provided with equidistant M*N the pilot hole of arranging of matrix shape, and the bottom of light source bracket is provided with positioning boss, cooperates by positioning boss and pilot hole, and light source bracket is fixed on the light source bracket location-plate.
In casing, be provided with a cover video camera governor motion, comprise a upright slide rail, former and later two L type adjusting sliders and a camera pan-tilt, wherein, be respectively equipped with chute and set bolt on each adjusting slider, the chute on the back adjusting slider and the set bolt of preceding adjusting slider cooperatively interact, and are fixed on the upright slide rail by the set bolt of back adjusting slider, chute internal fixation one camera pan-tilt of preceding adjusting slider, this camera pan-tilt is used for fixing video camera.
Between upper strata and middle layer, be provided with dismountable palm grid spacer.The center of palm grid spacer is provided with the hole of exposing for facies palmaris, respectively is provided with the reference column that several are used to block left hand and right hand on its positive and negative.
The superstructure of casing is a lid, and this lid and casing flexibly connect, and is provided with the hole of stretching into for palm in lid side.
Regulate upright slide rail at light source bracket and video camera, can be respectively equipped with scale on former and later two L type adjusting sliders, be used to regulate the position of light source and video camera.
Casing one side can be provided with chamber door, is used to settle or adjust light source, video camera and their position adjusting mechanism.
Technique effect of the present invention and advantage: light source can not be in same plane, and can be in whole space almost each position exist, and carry and can regulate brightness in the power bracket, make light source reach best regulating effect.The present invention has considered each key element of optical imagery, strengthens their adjustability as much as possible, and by coordinate, calibration summary, making this " adjustable " is repeatably, makes the research science more of palmmprint collecting device hardware components.
Advantage of the present invention further also has:
1, complete controlled totally-enclosed or semi open model photo environment;
2, palm locator meams flexibly;
3, the powerful governor motion of video camera flexibly, video camera three-dimensional position and angle totally 5 degree of freedom are adjustable, and wherein three-dimensional position can be realized the accurate adjusting of scale;
4, powerful flexible illumination governor motion, the quantity of light source changeable, each light source three-dimensional position and angle be totally 5 degree of freedom, and brightness is independent adjustable, and wherein three-dimensional position can be realized the accurate adjusting of scale;
5, modular design, expansion easily.
Description of drawings
Below in conjunction with accompanying drawing, the present invention is made detailed description.
Fig. 1 is the structural representation of palm print image acquisition equipment of the present invention;
Fig. 2 is the stereographic map of palm print image acquisition equipment of the present invention;
Fig. 3 is the light source bracket structural representation of palm print image acquisition equipment of the present invention;
Fig. 4 is the light source bracket location-plate structural representation of palm print image acquisition equipment of the present invention;
Fig. 5 is the video camera governor motion structural representation of palm print image acquisition equipment of the present invention;
Fig. 6 is the palm location-plate structural representation of palm print image acquisition equipment of the present invention;
Fig. 7 is the palm locating effect synoptic diagram of palm print image acquisition equipment of the present invention;
Fig. 8 is the electronic equipment synoptic diagram of palm print image acquisition equipment of the present invention;
Fig. 9 is the light-source brightness regulating circuit of palm print image acquisition equipment of the present invention;
The synoptic diagram of Figure 10 light source during for the use of palm print image acquisition equipment of the present invention.
Embodiment
With reference to figure 1, Fig. 2, the present invention is in order to strengthen light illumination control, and whole collecting device is integrated in the middle of the casing.Casing divides three layers, the lid 1 of upper strata for starting, and there is the hole of stretching into for palm top cover 1 side, is placed on after hand stretches on this layer palm location-plate 2; Be the middle layer under the palm location-plate 2, place video camera 8 and light source and their corresponding governor motions, casing has a side door 12, can directly adjust the position angle of each mechanism of middle layer after opening; Casing lower floor 6 adopts closure designs, in electronic equipments such as power supply 13, video frequency collection card, light source regulating circuit are arranged.After casing top cover and side door are all closed, the inner controlled totally enclosed shooting environmental fully that just forms; After top cover is opened, just form the photo environment of semi open model, can adapt to the needs of different scientific research targets respectively.
With reference to figure 1, Fig. 2, the Lights section of the present invention is positioned at the middle part of casing, wherein is provided with light source bracket location-plate 5 between middle layer and lower floor, fixes several light source brackets vertical with tank floor 7 on light source bracket location-plate 5.With reference to figure 3, light source bracket adopts the modular removable design, and quantity can be adjusted as required.Each light source bracket is made up of a telescopic tube and a base all perpendicular to tank floor, and scale 7-5 is arranged on the inner sleeve 7-4, and inner sleeve 7-4 and outer tube 7-7 fix by bolt 7-6, can realize the adjusting of light source upright position.The light source bracket top connects a socket 7-1 with the universal flexible pipe 7-2 of built-in electric wire, realizes that the light-source angle on 3 degree of freedom is regulated.On the socket 1 light source can be installed, light source can be selected floodlight as required, and spotlight etc. are dissimilar.Light source bracket is plugged on the light source bracket location-plate, and the bottom of light source bracket base 7-8 is provided with a location boss 7-9.With reference to figure 4, there is matrix shape equidistantly to arrange M*N pilot hole 5-1 on the light source location-plate 5, the positioning boss 7-9 of light source bracket cooperates with any pilot hole on the light source location-plate 5, realizes that two-dimensional position is accurately regulated on the light source levels direction.So the design guarantees that each light source bracket all independently has the position of 5 degree of freedom, angular adjustment ability.
With reference to figure 1, Fig. 2, also be provided with a video camera 8 and a governor motion thereof in the casing middle layer.The video camera governor motion comprises 10, two adjusting sliders 9 of a vertical slide rail and a camera pan-tilt composition.With reference to figure 5, two adjusting sliders all adopt L shaped design, two faces of each adjusting slider are respectively equipped with chute and set bolt, chute on the back adjusting slider 9-1 and the set bolt of preceding adjusting slider 9-2 cooperatively interact, and by the back adjusting slider set bolt 9-4 on upright slide rail 10, on upright slide rail, the adjusting slider upper hopper chute scale is arranged all, the chute internal fixation one camera pan-tilt 9-3 of preceding adjusting slider, the embedded Universal-head of this camera pan-tilt is used for fixing video camera.Adjusting slider cooperates slide rail with the bolt of strap wrenches, can guarantee to regulate smooth and easy, Stability Analysis of Structures, accurate positioning, easy to use, realize the adjusting of video camera 6 degree of freedom in the space.
Palm Print Recognition System is divided into collecting device and two key elements of algorithm, these 2 be mutual restriction, remedy mutually.Fixing algorithm allows equipment deacclimatize algorithm fully under study for action, and perhaps fixed equipment allows algorithm adapt to equipment fully.For the research of Palm Print Recognition System, need software, the common adjustment of hardware can reach more satisfactory target.So, in the middle of photo-optical palmmprint collecting device, thing, be interactional relation as, light source.It is most important having a palmmprint collecting device with very strong adjustability.Core of the present invention is for strengthening the adjustability of the Lights section and video camera part.
With reference to figure 1, Fig. 2, under the top cover palm location-plate.With reference to figure 6, the center of palm location-plate 2 is provided with the hole 21 of exposing for facies palmaris, and location-plate adopts two-sided design, and each face respectively has 6 reference columns 11, is applicable to the location of the left hand and the right hand respectively.With reference to figure 7, when the user was placed on hand on the location-plate, the hand post that can be fixed blocked, like this can guarantee to adopt picture position and form stable.The palm location-plate adopts detachable replaceable modules design, and the user also can customize location-plate as required voluntarily.
With reference to figure 8, each light source bracket links to each other with the light-source brightness regulating circuit of lower floor by plug, and the light-source brightness regulating circuit is powered by general supply, and links to each other with several outer brightness regulation knobs of casing.Outer several light-source brightness adjusting knobs of case are corresponding one by one with light source on the light source bracket, can the brightness of each light source in the independent regulation case under the situation that casing cuts out fully.Each adjusting knob is the rheostat that has scale, can independently accurately regulate single source brightness, from zero to maximal value.With reference to figure 9, regulating circuit adopts emitter follower, uses other circuit or controllable silicon and so on also passable, as long as can regulate the brightness of lamp.The main live part of this equipment except that light-source brightness regulating circuit plate 16, also has video frequency collection card, radiator fan 17, general supply 15 etc., master switch 13, supply socket 14 etc. all at orlop.Video frequency collection card is responsible for converting analog video signal to digital signal and is imported computing machine into; Radiator fan is responsible for the heat radiation of whole box body inner ventilation, guarantees system stability; General supply is responsible for the total system power supply; Master switch, the power on/off of control whole box body; Supply socket is the video camera power supply.
Job step of the present invention is: at first open the lid of casing, handle is placed on the fixed position of fixed head, opens the side door of casing, regulates the position and the height of light source.With reference to Figure 10, four light sources are separately positioned on upper left, lower-left and upper right, the bottom right that is positioned at palm, wherein light source 1 and 3 is brighter, and is closer from the palm vertical range, and horizontal range is also closer, and purpose is clearly to depict main line.Light source 2 is brighter, and is distant from the palm vertical range, and horizontal range is also distant, and purpose is to eliminate the shade that near the projection of thumb causes, in case its interference characteristic extracts, discerns to such an extent as to disturb.Light source 4 is not essential, and brightness should not be too bright, and distance is far away relatively, and fundamental purpose is to eliminate the shade of palm root portion.Casing top also has 4 adjusting knobs, controls the brightness of 4 light sources respectively.Then, regulate video camera in suitable position, the tested palm of alignment lens is taken pictures.The invention enables each lamp can both be in whole space almost each position exist, and in power bracket, can regulate brightness, make light source reach best regulating effect.Adjusting aspect video camera makes to take pictures and can be not limited only to primary optical axis, has promoted modulability, makes more stable, the science more of sampling.Entire equipment has also strengthened encapsulation, uses more convenient.
The application prospect of this product also not only is confined to based on photo-optical palmmprint collection, also is applicable to the experimental study that all need " the middle distance image acquisition under controlled light is shone " simultaneously, for example, and document reproduction etc.
Claims (9)
1. adjustable photo-optics palm print image acquisition equipment, comprise: a casing, box house is divided into three layers, the upper strata is the space of placing palm, light source and video camera and their position adjusting mechanism are placed in the middle level, power supply is placed by lower floor, the figure capture card, and light-source brightness regulating circuit, it is characterized in that: between middle level and lower floor, be provided with the light source bracket location-plate, on the light source bracket location-plate, fix several light source brackets vertical with tank floor, light source bracket is a telescopic tube, each light source bracket top is provided with a socket, is used to install light source, and the casing outside is provided with several light-source brightness adjusting knobs, described light-source brightness adjusting knob links to each other with the light-source brightness regulating circuit, and each knob links to each other with the light source of a light source bracket.
2. adjustable photo-optics palm print image acquisition equipment as claimed in claim 1, it is characterized in that: the light source bracket location-plate is provided with the equidistant pilot hole of arranging of matrix shape, the bottom of light source bracket is provided with positioning boss, cooperate by positioning boss and pilot hole, light source bracket is fixed on the light source bracket location-plate.
3. adjustable photo-optics palm print image acquisition equipment as claimed in claim 1 or 2, it is characterized in that: in casing, be provided with a cover video camera governor motion, comprise a upright slide rail, former and later two L type adjusting sliders and a camera pan-tilt, wherein, be respectively equipped with chute and set bolt on each adjusting slider, the chute on the back adjusting slider and the set bolt of preceding adjusting slider cooperatively interact, and being bolted on the upright slide rail by the back adjusting slider, chute internal fixation one camera pan-tilt of preceding adjusting slider, this camera pan-tilt is used for fixing video camera.
4. adjustable photo-optics palm print image acquisition equipment as claimed in claim 1 is characterized in that: the top base of light source bracket is fixedlyed connected with light source bracket by a universal flexible pipe.
5. adjustable photo-optics palm print image acquisition equipment as claimed in claim 1 is characterized in that: the superstructure of casing is a lid, and this lid and casing flexibly connect, and is provided with the hole of stretching into for palm in lid side.
6. as claim 1 or 5 described adjustable photo-optics palm print image acquisition equipments, it is characterized in that: between upper strata and middle level, be provided with a palm grid spacer, the center of palm grid spacer is provided with the hole of exposing for facies palmaris, respectively is provided with the reference column that several are used to block finger above being positioned at center pit on the positive and negative of palm grid spacer.
7. as claim 1,2 or 4 described adjustable photo-optics palm print image acquisition equipments, it is characterized in that: on light source bracket, be provided with scale.
8. adjustable photo-optics palm print image acquisition equipment as claimed in claim 3 is characterized in that: regulate upright slide rail at video camera, be respectively equipped with scale on former and later two L type adjusting sliders.
9. adjustable photo-optics palm print image acquisition equipment as claimed in claim 1 is characterized in that: casing one side is provided with chamber door, is used to settle or adjust light source, video camera and their position adjusting mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100000656A CN101221619B (en) | 2007-01-09 | 2007-01-09 | Adjustable photo-optics palm print image acquisition equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100000656A CN101221619B (en) | 2007-01-09 | 2007-01-09 | Adjustable photo-optics palm print image acquisition equipment |
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| Publication Number | Publication Date |
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| CN101221619A CN101221619A (en) | 2008-07-16 |
| CN101221619B true CN101221619B (en) | 2010-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007100000656A Expired - Fee Related CN101221619B (en) | 2007-01-09 | 2007-01-09 | Adjustable photo-optics palm print image acquisition equipment |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101833647B (en) * | 2009-03-11 | 2014-03-26 | 中国科学院自动化研究所 | Acquisition device and processing method of palm print image |
| CN101819629B (en) * | 2010-04-08 | 2013-01-23 | 西京学院 | Supervising tensor manifold learning-based palmprint identification system and method |
| CN103209281B (en) * | 2013-04-03 | 2015-05-13 | 中国人民解放军***福州总医院 | Medical graphic and text information acquisition system |
| CN103413140A (en) * | 2013-07-16 | 2013-11-27 | 华立仪表集团股份有限公司 | Instrument scutcheon character recognition method and device |
| CN103731962A (en) * | 2014-01-15 | 2014-04-16 | 广州市灵感摄影有限公司 | Intelligent lighting system and intelligent lighting adjusting method |
| CN108464820A (en) * | 2018-05-17 | 2018-08-31 | 安徽昱康智能科技有限公司 | A kind of hand physiology information detecting device and its physical-examination machine |
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| EP0617919A2 (en) * | 1993-03-30 | 1994-10-05 | Nec Corporation | Apparatus for obtaining ridge line pattern image on a curved surface |
| CN1685357A (en) * | 2002-09-25 | 2005-10-19 | 香港理工大学 | Method and apparatus for identifying a palmprint image |
| CN1728158A (en) * | 2004-07-28 | 2006-02-01 | 北京大学 | Device for capturing palm print image based on photo optics |
| CN1726867A (en) * | 2004-07-28 | 2006-02-01 | 北京大学 | Method and device for picking-up palm print |
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- 2007-01-09 CN CN2007100000656A patent/CN101221619B/en not_active Expired - Fee Related
Patent Citations (4)
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|---|---|---|---|---|
| EP0617919A2 (en) * | 1993-03-30 | 1994-10-05 | Nec Corporation | Apparatus for obtaining ridge line pattern image on a curved surface |
| CN1685357A (en) * | 2002-09-25 | 2005-10-19 | 香港理工大学 | Method and apparatus for identifying a palmprint image |
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