CN102460472A - Recording device for recording fingerprints - Google Patents
Recording device for recording fingerprints Download PDFInfo
- Publication number
- CN102460472A CN102460472A CN2010800273598A CN201080027359A CN102460472A CN 102460472 A CN102460472 A CN 102460472A CN 2010800273598 A CN2010800273598 A CN 2010800273598A CN 201080027359 A CN201080027359 A CN 201080027359A CN 102460472 A CN102460472 A CN 102460472A
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- China
- Prior art keywords
- camera according
- camera
- human body
- illumination component
- body limb
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR 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
- G06V40/1312—Sensors therefor direct reading, e.g. contactless acquisition
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR 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
- G06V40/1329—Protecting the fingerprint sensor against damage caused by the finger
Abstract
The invention relates to a device for recording linear structures of human body parts. The device comprises a recording region, in which the body part to be recorded can be positioned in a contactless manner. A body part exposure and capture region, which is equipped with at least one exposure element for exposing the body part and at least one capture element for capturing the image of the body part, is located at a distance from the recording region. A transparent protective element is positioned between the recording region and the body part and between the exposure and capture region.
Description
Technical field
The present invention relates to a kind of design of camera head, particularly a kind of camera that is used to photograph such as single/a plurality of fingers or a human body limb filum such as palm.
Background technology
In the prior art, knownly can in a photographed region, carry out the non-contact type location such as single/a plurality of fingers or human body limb such as palm.This photographed region structure system be by can supplying other to select for use with the principle that the limb parts that need the reflection limbs to engage suitably stretch into and place, but needs the affiliated limbs of the filum that acceptance videos can not be put on a backing plate or the similar articles.As finger is put on the backing plate, then possibly cause the distortion of videoing.
Summary of the invention
Fundamental purpose of the present invention provides a kind of camera, and its version provides best as far as possible protective effect can for the electronic system that comprises electronic component and/or camera circuit.
For realizing this purpose, tie up to the protective cover that transparent (or translucent) is housed between photographed region and limbs illumination and the shooting district in described camera of the present invention in the abstract of invention.
This transparent (or translucent) protective cover suitably is installed between photographed region and limbs illumination and the shooting district, makes human body limb can not be in contact with it also and then the phenomenon of the distortion of can not videoing.
The present invention advises the protective roof structure that adopts; Provide effect significant protective effect can on the one hand optical elements such as responsive electronic component and illumination, reflection, can protect instrument user or person under inspection's limbs to avoid the harm of electronics and/or optical element on the other hand again.Therefore this defencive function is two-way: the specific embodiment that is suggestion on the one hand can prevent camera of the present invention to receive intentionally or infringement unintentionally; Be that the camera of the present invention that sets transparent shield can improve the use acceptance greatly on the other hand; The appearance of protective cover has shown that it is a structural design option, and the present invention is not as limit.The present invention advises adopting the bright or translucent protective cover of a full impregnated, and especially suitable being installed in illumination component and the image mechanism scope.Therefore protective cover specific embodiment described here only belongs to an example.This protective cover can comprise a plurality of elements in addition, and wherein at least one is the transparent body, and these transparent bodies and remaining nontransparent protecting cover interconnect.
But, the object of the invention also can come best the realization through another design recommendation.With the said camera of abstract of invention serves as that a protective cover is adopted in the basis suggestion; It on the one hand should be transparent at least or be provided with hole for illumination component and/or image mechanism, but the electronic component or the circuit of illumination element and/or image mechanism provide protective effect on the other hand.
Select case one at this, protective cover system need not adopt transparent material to process fully, and need only have a protective cover transparency and get final product in transparency range (supplying image mechanism and/or illumination component to use) lining.Selecting case two at this, is to realize required transparent mechanism through the form of establishing suitable hole at the protective cover lining.These holes for example can supply illumination component and/or image mechanism to embed, and the printing opacity latus rectum are provided perhaps can for the non-transparency protective cover material in this scope.
Aforementioned second selects the advantage of case, and being not only can provide best protective effect to electronic component; And for optical element, the problem that the printing opacity scheme of hole formula can effectively be avoided reflecting and other must be noted that.And aforementioned first select another advantage of case, is that the transparent shield of this version also can make photographed region separate with human body limb illumination and shooting district with insulating fully.
Through adding a district that holds that can be used for supporting other limb parts of engaging with the limbs that need to photograph in that the photographed region of camera is other; Can be convenient to the person under inspection greatly and/or the proofer uses camera of the present invention, especially can improve the correct location of human body limb in camera.
Another design aim of the present invention is need not force to adopt in addition or possess an independent limbs supporting object, and is just enough when time in finger or the human body limb insertion photographed region, holds concurrently and need not and guide.
Select in the case at of the present invention another, protective cover can both can have been fixed also detachable in camera.For guaranteeing to obtain best reflection quality, a kind of of protective cover of the present invention selects case system to design by the principle of being convenient to change, so that it can be removed when maintenance or cleaning easily.And in another specific embodiment, be to adopt the for example protective cover with abundant optical characteristics of volume production.In the case, for example can protective cover be snapped in the camera forward, and make its part bead outwardly, all bead is then better outwardly, for protective cover in camera or the corresponding location of side.Said bead subsequently can be through easy immobilization material and camera splicing.This kind version has sufficient mechanical stability on the one hand, also allows the protective cover convenient changing on the other hand simultaneously.Protective cover itself for example can be processed the cover body of partially transparent at least through injection moulding.
In the present invention, hold the other photographed region that is provided with in district in camera.Described here " in ... side " equals to be positioned at " side ", " on " or " under " of object.
A preferred embodiment of the present invention is to be provided with a bearing and especially a general bearing to supply at least one illumination component and at least one image mechanism to use.According to ultimate principle of the present invention, also can be illumination component, image mechanism and/or one group of illumination component or one group of image mechanism and respectively establish a bearing.When needing illumination component and image mechanism become one, the general form bearing can provide the human body limb required optical characteristics of videoing naturally comparatively easily.Not ccontaining doubting installed an illumination component and an image mechanism in the structure of the present invention.For obtaining best illumination and/or imaging effect, the present invention also can install a plurality of illumination components and/or a plurality of image mechanism when needed, and principle according to the present invention acts synergistically mutually between them.
Another preferred embodiment of the present invention is that illumination component and/or image mechanism are loaded on the one and half oval cradles, and keeps almost parallel with the finger front end surface.Such specific embodiment can guarantee that each illumination component all can select similar similarly geometrical property for use.In this case, all illumination components have similar optical tasks equally under similar geometrical boundary condition, are about to illumination component and/or image mechanism and finger surface and separate.
The definition of the roughly specific embodiment of half oval cradle described in the present invention is that cylindrical or half-cylindrical shell sector and second sphere or the hemispherical shell sector that engage with the first shell sector front end constitute half oval cell body by first.Nail finger face behind can be described through following how much main bodys comparatively ideally.The first shell sector is a cylindrical form, but can not be understood as full cylinder, and is interpreted as the part of cylindrical shell face, for example the angular range of half shell or 170 ° to 190 °.Another how much main bodys are a sphere or semisphere, accurately are one 1/4th spherical shell sector in fact, and this shell sector engages with the front end of the first circular cylindrical shell sector.The angular range of the second shell sector where necessary can be less than 90 °, for example between 45 ° and 80 °.Like this, not ccontaining rear end that is located in the cylindrical first shell sector of doubting on the regulation incoming direction of human body limb and especially finger, spherical shell sector.
But through setting the flexible stent of a supporting electronic components and/or illumination component circuit, and this flexible stent can be partially submerged in the half oval cradle at least, to realize that especially reasonably electronic circuit is made.In this proposed projects of the present invention, allow to adopt the method therefor and the instrument of convention plane formula switching circuit board setting-in that circuit and electronic component are arranged on the spherical inclined-plane.By rational method for making, just can generate in enormous quantities and can make, have very high-quality and flexible available product again.
In specific embodiment of the present invention, must there be the circuit of electronic component and/or illumination component to be placed in flexible stent at least.In the case, surface adhering element capable of using (SMD) technology is handled with other electronic components the LEDs for preparing through similar face adhering element (SMD) technology.
In another preferred embodiment of the present invention, illumination component is installed between each image mechanism by the tangent direction with respect to finger axis and/or half oval cradle.
Preferable way with human body limb (for example: the finger nail face) below total reflection light, accept reflection is.Therefore image mechanism and illumination component transposition will be more favourable, promptly by professional experiences image mechanism will be installed in (longitudinal axis that depends on the first shell sector) between each image mechanism by the tangent direction with respect to finger axis and/or half oblong slots axis.
Preferable employing video camera, the video camera of lining by line scan, sensor or similar device are used as image mechanism.Handle for ease of digital date, adopting with the semiconductor by professional experiences system is the solution on basis.
The one or more light-emittingdiodes of the preferable employing of illumination component can adopt Halogen lamp LED and/or incandescent lamp in addition.Wherein adopt light-emittingdiode (LED) especially can obtain preeminent high-level efficiency.The general system of this in addition illumination component supplies with surface adhering element, therefore when wiring harness, can handle easily.Press professional experiences by a plurality of LEDs installing sliverings or row, wherein preferred arrangement system and bearing longitudinal extension section keeping parallelism, and and then with half oblong slots longitudinal extension section or point the axis keeping parallelism.This type of LEDs bar or row are hinged with an image mechanism respectively then.Between each image mechanism in the present invention, plural LEDs bar or row can be housed.
Press professional experiences, illumination component should penetrate Essential colour and be monochromatic light source, and is positioned at visible spectral region.Monochromatic light source has certain bandwidth naturally.If the LEDs that is adopted has based semiconductor band distance and the wavelength of corresponding definition, then be understood to the monochromatic source of indication of the present invention.In visible spectral region, use light source, also have and to let the proofer estimate the advantage of the light source effect of illumination component.Through the bright lamp of illumination component, promptly send the signal of reflection process well afoot to the proofer.
Use monochromatic source also to be beneficial to the analyzing and processing of various information in addition.Therefore also use the wave filter of corresponding sensitivity by various application wavelength, and from the various information of human body limb surface picked-up.The preferable employing of the visible light colors of illumination component is cyan, green or blue for example.Wherein use green light can multiple advantages be come together in all over the body: at first green light is to check formula commencing signal (green light) reliably for the proofer, uses green light also can bring very large contrast to reflection in addition.As for the susceptibility of image mechanism, also can carry out optimization naturally and handle according to professional experiences and corresponding illumination component wavelength.
In another preferred embodiment of the present invention, protective cover and photographed region suitably separate, and are advisable not come in contact with body.One of the object of the invention is to absorb the minimum as far as possible human body limb reflection of degree of distortion.Therefore in the present invention, any possibility of always avoiding human body limb to contact with camera of the present invention.Protective cover suitably separates by professional experiences and photographed region, even finger or human body limb bending can not touched with it too.Always had some sweat or dirty on the human finger unavoidably, adhered to the chance on the protective cover, and and then avoided influencing light transmission features and the advantage of this type of geometry can lower these impurity.
Protective cover is installed on the bearing, and with fixed thereon of for example fixed screw, to form very closely and the structure of saving the space.
In another preferred embodiment of the present invention, protective cover is sealed the whole photographed region except that the limbs patchhole.This specific embodiment can make the optical element of electronic system and/or camera of the present invention exempt from the one hand and destroy or faulty operation, can guarantee higher safety in utilization on the other hand, and reason is a possibility of having avoided human body limb to contact with electrical equipment.Protective cover also comprises a lead hole certainly, and protective cover is also sealed the inner chamber of semicircle cradle.Wherein lead hole system is laid in the bearing side of the spherical dorsad second shell sector by the direction of finger axis and/or half oval cell body longitudinal extension section.
In another preferred embodiment of the present invention, bearing is provided with the reflection scope of image mechanism.Bearing for example can be corresponding therewith compound moulding.As above-mentioned, bearing is the semicircle bathtub construction and has multiple function.Bearing has the effect of holding and supporting illumination component on the one hand, and image mechanism is accepted the supporting of bearing equally by professional experiences.This frame mode should be realized best as far as possible optical characteristics.Be all-trans the light principle except that what note being adopted, should also be noted that the illumination effect of guaranteeing that sharpness is enough and not having diffusion certainly.Image mechanism adopts the optical element such as video camera.Because video camera has certain installation usually, so on the preferable bearing lateral surface that is installed on half oblong slots medial surface dorsad.Bearing is provided with corresponding therewith through hole, and its edge is suitable for the reflection scope of definition image mechanism.
Observed the transparent shield interface here and formed reflected light, this reflected light forms interfering hickie in the video camera reflection.Through being laid in shadow shield on the bearing and the other photographed region direction (being the direction inside of semicircle flute profile) in subtend shooting district, can effectively avoid this reflex.This shadow shield for example can as marginal mode be laid in shooting district around, and can cover those and under obtuse angle (reflecting to form), reflect the light ray that comes out by human body limb.In the case, protective cover only is installed on the bearing medial surface by corresponding short spacing, and makes human body limb and protective cover in the photographed region form maximum as far as possible spacing.
In another preferred embodiment of the present invention, receive the support at shadow shield edge on the protective cover bearing.This inventive features also can have another definition, and just protective cover is accepted the guiding and the supporting of shadow shield of edge and/or the bearing of shadow shield.This scope structure of bearing is preferably cylindrical half shell, and protective cover then has a similar profile, makes that protective cover just can be in the shadow shield edge inserts bearing.In this case, the installation of camera and replacing become simple and easy convenient.
Protective cover of the present invention has specific embodiment very flexibly.Protective cover for example can be processed by corresponding solid material, for example uses transparent, or shock-resistant plastic cement in case of necessity.Protective cover for example also can be single unitary, is perhaps formed by a plurality of interlocks or interconnected protective cover elements combination.Protective cover of the present invention also can have coat or spray protective layer.This outer protective cover also can be processed by resilient material.
Because clear plastic is preferable selecting materials, so select in the case suggestion to adopt polymethylmethacrylate (PMMA) to make protective cover at one of the present invention.Certainly other all types of clear plastics all can be adopted by the present invention.This outer protective cover also allows to be processed by the solid material of glass or other printing opacities.
Polymethylmethacrylate convention can be used as the labor and materials of glasses etc.This material has lightweight advantage, the characteristics that in injection moulding or other model methods, can be out of shape arbitrarily and adopt in addition.Therefore adopt polymethylmethacrylate can form the protective cover of multiaspect sealing and printing opacity.
Protective cover can prevent short circuit on the one hand in addition still to electrical isolation, can prevent again that on the other hand human body limb from contacting with live part.
The present invention also provides a kind of flexible protective cover specific embodiment, and it for example can adopt rubber or silica gel as labor and materials.For example laying spraying protective layer or coat (for example japanning or similar situation) on the bearing, belong to the definition category of protective cover of the present invention equally.One of purpose of protective cover in this invention scheme, being provides protective effect to the circuit of electronic component and/or illumination component at least.
In another preferred embodiment of the present invention, tie up to photographed region and be provided with the positioning unit that can supply human body limb in place.In this positioning unit, being provided with one is the shooting district that places restrictions on the photographed region border, is provided with in addition to be used to point out the signal element of the relevant human body limb of proofer with respect to the location in shooting district.
The purpose of camera of the present invention is to absorb human body limb reflection clear as far as possible and that the level contrast is clearly demarcated.For this reason, the best located of human body limb in photographed region is very important factor.Though optical unit has had certain degree of depth sharpness, but proofer's suitable guiding also helps to locate in the preferred range of human body limb in photographed region.For this reason, be provided with a shooting district that is subject to the photographed region border in the positioning unit.Not only be used for the reflection of overlooking of shooting finger (perpendicular to nail) at this positioning unit, but also the positioned parallel situation on make a video recording finger and finger nail plane is preferable attitude position to be positioned at the side limit wherein.Thus for for example it seems the finger of the non-straight that is positioned at center position from upside, it is wrong to be identified as the location.
And this dual shooting is machine-processed, in a constitutional diagram, just can be used as proofer's REFERENCE INFORMATION when needed simultaneously.
Positioning unit comprises that not only a camera that is used to point shooting (for example: video camera), be used to point out the signal element of the relevant human body limb of proofer with respect to the location in shooting district but also include.Signal element among the present invention can have multiple different structural forms, for example the signal element of light, sound or written form.
In a preferred embodiment of the present invention, the human body limb positioning unit of camera is equipped with a display screen.This display screen is used to show the human body limb reflection that has been positioned at photographed region, the shooting district scope that the photographed region border oracle that fades out in the display screen is preferable.
Suggestion specific embodiment of the present invention is not distinguished the definition method that is positioned at (from the light sensation official) within the photographed region border with a kind of relevant shooting and is exceeded, and can adopt other to be used to define the method in shooting district in addition.In the described first definition method, can implement a kind of fairly simple profile relatively, promptly from overlook to side-looking to the profile on human body limb and photographed region border relatively respectively.When these borders are damaged, then (for example: display screen) send corresponding prompt by signal element.
Can obtain preferable shooting district through a center of gravity target in addition: confirm by the geometric center of gravity of shooting human body limb; Judge that the reflection center of gravity which geometric center of gravity and is positioned at photographed region intersects, for example available arrow indicates the various direction of motion of human body limb (finger).After reaching target location or target face, this position of green indication will be arranged, and begin shooting subsequently.For obtaining best human body limb space orientation effect; Being provided with a testing agency can be from the position of a plurality of direction shooting human body limbs; For example, show through for example display screen with the form that covers mechanism simultaneously then when to human body limb side and side implementation detection from it.Because finger nail too big (for example because due to the nail salon) causes the distortion of videoing, available side reflection is corrected to point and is overlooked reflection in order to avoid finger.
The principal advantages of camera of the present invention especially is to make a video recording immediately, videos and handles and the demonstration of reflection information.The present invention has planned that the multiple different means information that is used to video shows.Except that outputing to a display screen or other display, the present invention also comprises for example audio communication output and literal output.
Positioning unit of the present invention also can comprise in addition an algorithm relatively, be used to discern the human body limb in the photographed region and then its and photographed region boundary position are made comparisons, with take place the photographed region border when impaired output one assist information.Auxiliary information for example can be the optics auxiliary symbol (arrow) in display screen or the similar device.For obtaining point-device locating effect, so information is confirmed in the position of not adopting all operational reflection data to calculate human body limb, and just press the reflection data that actual needs uses a part, especially define the required reflection data of human body limb profile.
The same image mechanism of camera is not only born the required photography of detection and location, but also is responsible for the shooting on human body limb surface.This image mechanism is preferable to be laid on the finger bottom surface, therefore can obtain complete bottom surface reflection.
A kind of camera specific embodiment that comprises a lighting mechanism also is provided in the present invention; This lighting mechanism contains illumination component and image mechanism, and wherein the susceptibility of the illumination intensity of illumination component and/or image mechanism coordinates suitably and thus can provide the clearly demarcated as far as possible human body limb of contrast to video.Basic setup by illumination intensity and susceptibility; The present invention also provides an adaptation mechanism, decides to obtain the reflection of optimum contrast as far as possible through this adaptation mechanism by the location of human body limb size, the human body limb colour of skin, human body limb transmitted light and inverted image etc.
The present invention comprises following various conception plans at this: in first kind of conception plans, the image mechanism susceptibility is fixing nonadjustable, and the illumination intensity of illumination component then can be adjusted in contrast.Make an appearance picture with an illumination intensity mean value commonly used earlier, when testing for the second time, adjust illumination intensity then and generate second reflection.The contrast that compares two reflections subsequently, to confirm that wherein trend (ascendant trend) is also made the 3rd reflection then, the illumination intensity of this reflection should change along with this trend.If the contrast of the 3rd reflection is good as second that kind, then by trend continuation adjustment illumination intensity and till follow-up reflection contrast is smaller.By this method, can find out one by the illumination intensity of susceptibility that provides and variation is local optimum contrast scope at least.
Also can make comparisons in addition, for example can implement as follows with an absolute contrast standard value:
The first step is measured existing contrast earlier.This value compares with an absolute contrast value of value as a reference.If the difference between contrast measured value and the absolute contrast value is positioned at an allowed band, just can the illumination settings of instrument be used for current shooting.If the contrast measured value exceeds allowed band, just should further correct illumination intensity, so that contrast can improve (promptly near allowed band).This adaptive operation can repeat repeatedly by actual needs, until finding acceptable settings.
Aforementioned algorithm, certainly same form are applied to fixing setting of illumination intensity and the variable all situations of illumination component susceptibility.
The characteristics of the third applicable cases are that illumination intensity and susceptibility all can change; And the preset value that these two parameters or foundation are derived from practical experience changes simultaneously; (for example: adjust illumination intensity earlier change according to the order of sequence; And then the accent susceptibility, adjust for the second time subsequently illumination intensity and and then transfer susceptibility, like that).
Because the shooting operation of image mechanism because existence and completions that can be exceedingly fast of positioning unit, so also can carry out a plurality of steps that an optimal illumination degree and/or susceptibility suitability are adjusted corresponding transient state (several parts second).
In another preferred embodiment of the present invention, to stretch into human body limb in the photographed region be provided with one spacing.This is spacing to have the mechanical type motion mechanism, can the accurate position of easy qualification human body limb in photographed region.Preferred embodiment of the present invention comprises: protective cover is almost intactly sealed photographed region on the one hand, and human body limb does not contact with protective cover on the other hand, can the distortion because of pressure load to avoid the human body limb reflection.Spacingly be arranged in the photographed region by professional experiences and accept the for example support of protective cover, but it does not belong to the function element of protective cover.Spacing human body limb (finger) front position that for example can be set within the camera, and structure example is as can be register pin or inclined-plane.Arrangement form wherein for example can select to make spacing the finger nail front end played the backstop effect, forms the skin surface of characteristic curve to avoid influencing relying.In this case, note that certainly spacing horizontal influence for the finger front end can cause taking place the distortion that can ignore equally, but still belong to acceptable category among the present invention.Adopt an inclined-plane spacingly to have tangible advantage equally in addition as what nail was played the backstop effect.Limit function wherein is not limited to laterally and/or horizontal level, but also can realize the longitudinal spacing of same form.The human body limb optical profile type location that the spacing same support the present invention of mechanical action formula recommends.
The present invention also recommends illumination component should at least one pencil of parallel lines be projected on the human body limb surface in addition, especially finger and/or palm surface.
Tangent at a certain angle and form a net grid structure by this wire harness and second wire harness, can carry out definition space or location to the surface range of human body limb.According to professional experiences be wire harness and/or net grid projection (be not necessarily mutually orthogonal wire harness, the wedge angle formula tangent equally can) select another photochromic illuminant color for use as illumination component.Video camera usually cooperates a plurality of sensitization receivers to use together, and people utilize net grid projection (location or directed) to cover photochromic that a kind of and a video camera susceptibility coincide, for example red light.Through adopting another wire harness and/or the projection of net grid, can avoid the loss of relative influence and information as illuminant color.In addition because natural characteristic can not hinder the general illumination situation of shooting across the linear projection of a plurality of area of illuminations of illumination component.
The present invention also comprises the reflection method of human body limb filums such as for example single or a plurality of fingers or palm in addition, and wherein suggestion only is being positioned at the reflection that just carries out human body limb when a shooting is distinguished when human body limb and boundary line thereof.
The reflection method that the above-described camera of preferable employing is auxiliary.
The basic characteristics of reflection method of the present invention are the contrast and the degree of depth sharpness that can provide big as far as possible, and and then make human body limb reflection clearly.
The present invention also comprises another reflection method; In this reflection method along with human body limb within the camera (especially photographed region or shooting district) location time or afterwards, the shooting lighting mechanism starts by follow-up precondition: the mutual coordination of illuminance and/or susceptibility and optimize and can generate the big as far as possible human body limb reflection of contrast.Find that wherein human body limb carries out with the optimization of shooting contrast in camera and the location within the shooting district synchronously, and these two steps can be accomplished before reflection of picked-up.Better way is that two steps (location and contrast optimization) are with the multi-form identical reflection information of analyzing image mechanism.In the camera positioning process, adopt suitable form (as above) that the biometrics information is analyzed and handled, in the contrast optimizing process then to Luminance Analysis.
Certainly also can develop a kind of algorithm that can integrate and make information analysis and working routine to accelerate these two steps for this reason, video clearly to obtain the contrast distinctness and the degree of depth with a plurality of adaptation step and the best located of human body limb within the shooting district of the optimization of smooth execution contrast.
What need particularly point out is that all relevant described characteristics with camera and characteristic all should be regarded (comprising mode of operation) description of process of the present invention as, also are the disclosure that can supply the present invention to adopt therefore.This point is equally applicable to opposite order, that is to say relevant described camera architectural feature with or other processes, and all can be considered is adopted as the camera claim, therefore belongs to announcement object of the present invention equally.
Following chapters and sections combine accompanying drawing that one invention specific embodiment is set forth.
Description of drawings
Fig. 1, Fig. 2 are respectively camera bearing stereographic map of the present invention.
Fig. 3, Fig. 4, Fig. 5 are respectively protective cover front view (FV) of the present invention (Fig. 3), side view (Fig. 5) and stereographic map (Fig. 4).
Fig. 6 another seat embodiment stereographic map of the present invention.
Fig. 7 another camera of the present invention embodiment stereographic map.
The stereographic map of the camera among Fig. 8 the present invention, wherein housing is removed.
Embodiment
Indicate element identical or that coincide each other with the components identical symbol in the figure, will repeat no more as inessential.
Fig. 7 has shown the master plan of camera 1 of the present invention.
Another advantage of the transparent mode of cover plate 11 configuration is to strengthen the proofer and stretches into the identification degree in the patchhole 42 for human body limb 2, and to make camera 1 the inside no longer be the hole of gloomy formula.Can illuminate camera 1 and can see through the light of transparent or semitransparent cover plate 11 scattering outward inside, and offer the possibility that the proofer estimates human body limb 2 shooting processes.
By display screen 12 or another suitable display, can show the information of usefulness to the proofer.Display among the present invention is not limited to use display screen 12, in addition also has many options, for example also can use other acoustics or optical signalling unit.
Be equiped with bearing 3 below the cover plate 11, protective cover 4 is equipped with in its inside.
Fig. 8 diagram the structure of the shown in Figure 7 camera 1 of transparent cover plate 11 when having pulled down.As shown in the drawing, 10 parts that belong to camera of photographed region, and receive the qualification of a protective cover 4.Protective cover 4 is almost all sealed photographed region 10, but need to lay on the shell wall face except the position of patchhole 42.Owing to be provided with circular hole 13 (comparison diagram 7) in the transparent cover plate 11, slip camera 1 inside so patchhole 42 has only a local surfaces just to be used for human body limb 2.
The structure of relevant protective cover 4 further details in Fig. 3, Fig. 4 and Fig. 5.
Relevant protective cover 4 snaps in the situation of 3 li of bearings, continues to set forth with reference to Fig. 1, Fig. 2.Receiving on bearing 3 inwalls 33 that protective cover 4 beads 30 cover, be equiped with a flexible stent of wearing LED illumination component 31.
Irradiate light human body limb 2 that illumination component 31 emits and therefrom reflection then, reflected light reflection image mechanism 39.
The affiliated shooting district of component symbol 38 each image mechanism 39 of expression.Bearing is provided with a through hole for 3 li, and the light that human body limb 2 reflections are come out passes this through hole and injects in the image mechanism 39.
The accompanying drawing the inside has illustrated the primary element of camera of the present invention.Fig. 1, Fig. 2 have shown the spatial structure of bearing 3.Bearing 3 is generally an annular half and opens wide body, just described half oval cell body 32.Should can be divided into two shell sectors (34,35) by half oval cell body.
The first shell sector 34 is cylindrical half shell that opens wide forward, then is the second spherical shell sector 35 at its back side.The structure of bearing 3 is sealed photographed region 10, but this structure might not belong to claim of the present invention.Wherein selected version, be human body limb for example: finger can be from the front, and promptly the back side of the second shell sector 35 is stretched into.
Wherein be equiped with a flexible stent of processing by the flexible planar material on cylindrical and/or (partly) spherical inside surface 33 (first, second shell sector 34,35), in the semicircle cell body of the bearing of perhaps packing into, and make the required profile of flexible stent accurate balance in (partly).
Flexible stent is used to support the circuit of electronic component and/or illumination component.
In inwall 33 outsides of photographed region 10 dorsad, especially in the cylinder scope, be provided with and supply not shown image mechanism to peg graft and fixing holder 36 here.
Photographed region 10 is arranged in the centering or point midway of camera basically, especially suitable inwall 33 districts that are arranged in bearing 3 in human body limb illumination and shooting district 30.
Half oval cell body 32 of the planform of protective cover 4 and bearing 3 coincide.
Fig. 6 has shown another structure of the bearing 3 of camera of the present invention.As shown in the figure, bearing 3 is made up of the illumination component 31 of a plurality of modular structures, and these illumination components have constituted the semicircle cell body around human finger 2 longitudinal axis 20.Cylindrical first shell sector 34 of 3 times branches of the bearing here and (partly) spherical second a shell sector 35 that is positioned at finger tip scope (being finger tips).The preferred arrangement system of image mechanism is loaded between each illumination component 31, is advisable in full emission light, making a video recording.Because the space of a whole page is limit, Fig. 6 fails to show the independent structure of protective cover 4.
The present invention is left each object requires protection in partial monopoly application or selection process right, even under claim and the discharged situation of retroactive effect.
The claim of following the patented claim here or will present in future, belonging to does not have legal precedent and trial elaboration that the further protection of palpus application is weighed.
If similar test and especially relevant prior art show that though one of target of the present invention or multinomial characteristic are comparatively excellent; But be not to have decisive meaning; Naturally should seek this category feature not to be enumerated interior, and especially not list in the independent claims now.
Other is noted that, more than various embodiment are said all allows combination in any each other with each specific embodiment of the invention shown in the drawings and modification.Wherein single or a plurality of characteristics all allow to exchange.These characteristics combination should be regarded the content that has disclosed as equally.
Listed linked character in the claim subordinate item is meant various dependent claims for the replenishing of the object of independent claims, but can not be interpreted as the independent target property protection power of the dependent claims characteristic of abandoning having reviewed.
For the characteristic that only in patent specification, discloses so far, can in the requisition procedure process, be seen as characteristic with invention basic meaning, for example produce difference with prior art.
For so far only in the characteristic that discloses in the patent specification or include the individual characteristics in the application range of multinomial characteristic; Can make a distinction and list in independent claims at any time with prior art, illustrated and/or can cooperate other characteristics to obtain favourable achievement interrelatedly with other characteristics but condition is these characteristics.
Claims (35)
1. a camera is used for photography such as single/a plurality of fingers or a human body limb filum such as palm, and this camera (1) comprises a photographed region (10), needs the limbs (2) of photography to carry out the non-contact type location in its inside; Comprise the limbs illumination and the shooting district (30) that separate with this photographed region (10) in addition, installed at least one illumination component (31) that is used to illuminate these limbs (2) in its inside and at least one is used for the image mechanism (39) of these limbs (2) photography; Comprise the local transparent shield (4) that is installed between illumination of this photographed region (10) and this limbs and the shooting district (30) in addition.
2. camera is used to photograph such as single/a plurality of fingers or a human body limb filum such as palm, and this camera (1) comprises a photographed region (10), needs the limbs (2) of photography to carry out the non-contact type location in its inside; Comprise the limbs illumination and the shooting district (30) that separate with this photographed region (10) in addition, installed at least one illumination component (31) that is used to illuminate these limbs (2) in its inside and at least one is used for the image mechanism (39) of these limbs (2) photography; Comprise a protective cover (4) in addition; It perhaps is provided with hole corresponding to this illumination component (31) and/or this image mechanism (39) for transparent on the one hand, and electronic unit or the circuit to this illumination component (31) and/or this image mechanism (39) provides protective effect on the other hand.
3. camera according to claim 1 and 2 is characterized in that, this photographed region (10) is held the other extension in district at one of this camera (1), and wherein this holds the district and is used to support other limb parts that engage with these limbs (2) of being photographed.
4. camera according to claim 1 and 2 is characterized in that, this camera (1) the inside is equipped with a bearing (3) and especially can be supplied at least one illumination component (31) and the general bearing (3) of at least one image mechanism (39) use.
5. camera according to claim 1 and 2 is characterized in that, this illumination component (31) and/or this image mechanism (39) are loaded on the bearing (3) of half the oval cell body (32), and keeps almost parallel with the finger front end surface.
6. camera according to claim 5 is characterized in that, should half oval cell body (32) be generally by one (partly) the cylindrical first shell sector (34) and (partly) the spherical second shell sector (35) that engages with this first shell sector (34) front end form.
7. camera according to claim 5 is characterized in that, this camera (1) but have supporting electronic components and/or the flexible stent of illumination component circuit, and this flexible stent can be partially submerged into this half oval cell body (32) bearing (3) lining at least.
8. camera according to claim 5 is characterized in that, this illumination component (31) is by the tangent direction of oval cell body (32) bearing (3) is installed in respectively between this image mechanism (39) with respect to pointing axis (20) and/or being somebody's turn to do partly.
9. camera according to claim 1 and 2 is characterized in that, be adopt video camera, line by line scan video camera or sensor be as this image mechanism (39).
10. camera according to claim 1 and 2 is characterized in that, is to adopt light-emittingdiode (LED), Halogen lamp LED, incandescent lamp or LED bar or row as this illumination component (31).
11. camera according to claim 10 is characterized in that, and is parallel with the longitudinal extension body of bearing (3) as this LED bar of this illumination component or row's installation position.
12. camera according to claim 1 and 2 is characterized in that, it is monochromatic light source that this illumination component (31) penetrates Essential colour, and is positioned at visible spectral region.
13. camera according to claim 12 is characterized in that, the visible light colors of this illumination component (31) adopts cyan, green or blue.
14. camera according to claim 1 and 2 is characterized in that, this protective cover (4) suitably separates with this photographed region (10), and does not come in contact with these limbs (2).
15. camera according to claim 1 and 2 is characterized in that, this protective cover (4) is sealed whole this photographed region (10) except that these limbs (2) patchholes (42).
16. camera according to claim 1 and 2 is characterized in that, this protective cover (4) is fixed on this bearing (3) and/or the shell block, and wherein protective cover (4) also can embed in the bearing (3).
17. camera according to claim 1 and 2 is characterized in that, on this bearing (3), is provided with a shooting district (38) of this image mechanism (39).
18. camera according to claim 17 is characterized in that, a shadow shield is loaded on last and other this photographed region (10) in this shooting district (38) of subtend of this bearing (3).
19. camera according to claim 18 is characterized in that, this protective cover (4) is accepted the support at this shadow shield edge on this bearing (3).
20. camera according to claim 1 and 2 is characterized in that, this protective cover (4) is a single unitary, is perhaps formed by a plurality of interlocks or interconnected protective cover elements combination.
21. camera according to claim 1 and 2 is characterized in that, this protective cover (4) is made by clear plastic and especially polymethylmethacrylate (PMMA) or glass.
22. camera according to claim 1 and 2 is characterized in that, this protective cover (4) has coat or spraying protective layer, perhaps is made by resilient material.
23. camera according to claim 1 and 2; It is characterized in that; Be provided with in this photographed region (10) and can supply this human body limb (2) positioning unit in place; And in this positioning unit, being provided with one is the shooting district that places restrictions on the photographed region border, is provided with in addition to be used to point out the signal element of relevant this human body limb (2) of proofer with respect to the location in this shooting district.
24. camera according to claim 23; It is characterized in that; This positioning unit that is used to discern the on-station position of this human body limb (2) in this photographed region (10) is equipped with a display screen (12); This display screen is used for showing this human body limb (2) reflection that has been positioned at this photographed region (10), the shooting district scope that the photographed region border oracle that fades out in this display screen is preferable.
25. camera according to claim 24 is characterized in that, the reflection of this human body limb (2) absorbs by the image mechanism (39) of this camera, and is preferably the image mechanism (39) of subtend finger bottom surface.
26. camera according to claim 25 is characterised in that, this camera (1) is can make a video recording immediately, video to handle and the demonstration of reflection information.
27. camera according to claim 24; It is characterized in that; This positioning unit comprises also that in addition one compares algorithm (belong to positioning systems and unify assembly); Be used to discern this human body limb (2) in this photographed region and then its and this photographed region (10) boundary position made comparisons, with take place the photographed region border when impaired output one assist information, and the optics auxiliary symbol is outputed to this display screen (12).
28. camera according to claim 1 and 2; It is characterized in that; One lighting mechanism contains this illumination component (31) and this image mechanism (39), and wherein the susceptibility of the illumination intensity of this illumination component (31) and/or this image mechanism (39) coordinates suitably and thus to provide clearly demarcated as far as possible this human body limb (2) of contrast to video.
29. camera according to claim 1 and 2 is characterized in that, at least a portion illumination component (31) projects at least one pencil of parallel lines on finger and/or the palm surface.
30. camera according to claim 1 and 2 is characterized in that, at least a portion illumination component (31) projects two pencil of parallel lines on finger and/or the palm surface at least, and therefore forms the projection of net grid formula.
31. camera according to claim 30 is characterized in that, the photochromic same illuminant color as this human body limb of wire harness and/or the projection of net grid.
32. camera according to claim 1 and 2 is characterized in that, this camera (1) is provided with one and is used in the spacing of this photographed region backstop human body limb.
33. camera according to claim 1 and 2 is characterized in that, this protective cover (4) both can have been fixed also detachable in this camera.
34. the mapping method of a human body limb filum; Be used for for example single or a plurality of fingers or palm etc.; And by a camera according to claim 1 and 2, wherein the shooting of this human body limb is just to have begun to carry out within the boundary line of this human body limb has been positioned at a shooting district the time.
35. the mapping method of human body limb filum according to claim 34; It is characterized in that; Along with this human body limb when locating within this camera and this photographed region or afterwards, a shooting lighting mechanism that comprises this illumination component and this image mechanism starts by follow-up precondition: the mutual coordination of the illuminance of this illumination component and/or this image mechanism susceptibility and optimize and can generate the big as far as possible human body limb reflection of contrast.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009018374.4 | 2009-04-23 | ||
| DE102009018374A DE102009018374A1 (en) | 2009-04-23 | 2009-04-23 | cradle |
| PCT/EP2010/002515 WO2010121824A2 (en) | 2009-04-23 | 2010-04-23 | Recording device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102460472A true CN102460472A (en) | 2012-05-16 |
| CN102460472B CN102460472B (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080027359.8A Expired - Fee Related CN102460472B (en) | 2009-04-23 | 2010-04-23 | The camera of photography finger mark |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2422296A2 (en) |
| KR (1) | KR101845220B1 (en) |
| CN (1) | CN102460472B (en) |
| DE (1) | DE102009018374A1 (en) |
| WO (1) | WO2010121824A2 (en) |
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|---|---|---|---|---|
| DE102022105950A1 (en) | 2022-03-15 | 2023-09-21 | TRUMPF Werkzeugmaschinen SE + Co. KG | Scanning device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20121729U1 (en) * | 2001-05-15 | 2003-06-12 | Atelion Gmbh | Person identification with 3-dimensional finger group analysis involves analyzing fingerprint, fingertip shape from different perspectives to prevent deception using planar images |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5726443A (en) * | 1996-01-18 | 1998-03-10 | Chapman Glenn H | Vision system and proximity detector |
| US6512381B2 (en) * | 1999-12-30 | 2003-01-28 | Stmicroelectronics, Inc. | Enhanced fingerprint detection |
| DE20121731U1 (en) * | 2001-05-15 | 2003-06-12 | Atelion Gmbh | Person identification with 3-dimensional finger group analysis involves analyzing fingerprint, fingertip shape from different perspectives to prevent deception using planar images |
| US20050089204A1 (en) * | 2003-10-22 | 2005-04-28 | Cross Match Technologies, Inc. | Rolled print prism and system |
| WO2005106774A2 (en) * | 2004-04-23 | 2005-11-10 | Validity Sensors, Inc. | Methods and apparatus for acquiring a swiped fingerprint image |
| DE102004041115A1 (en) * | 2004-08-24 | 2006-03-09 | Tbs Holding Ag | Airline passenger`s finger-or face characteristics recording method, involves recording objects by two sensors, where all points of surface to be displayed are represented in two different directions in digital two-dimensional pictures |
| EP1810218A2 (en) * | 2004-11-05 | 2007-07-25 | TBS Holding AG | Method and device for acquiring biometric data |
| US7515252B2 (en) * | 2005-12-30 | 2009-04-07 | Cardinal Health 303, Inc. | Optical fingerprint imaging system and method with protective film |
| JP5034359B2 (en) * | 2006-08-07 | 2012-09-26 | 富士通株式会社 | Image authentication apparatus, image authentication method, image authentication program, recording medium, and electronic device |
| US7660442B2 (en) * | 2006-09-01 | 2010-02-09 | Handshot, Llc | Method and system for capturing fingerprints, palm prints and hand geometry |
| JP4680158B2 (en) * | 2006-09-13 | 2011-05-11 | 株式会社日立製作所 | Biometric authentication device |
| JP4786483B2 (en) * | 2006-09-14 | 2011-10-05 | 富士通株式会社 | Biometric guidance control method for biometric authentication device and biometric authentication device |
| US20080157252A1 (en) * | 2006-12-27 | 2008-07-03 | Lite-On Semiconductor Corp. | Optical sensor package |
| JP4389957B2 (en) * | 2007-04-11 | 2009-12-24 | ソニー株式会社 | Biometric authentication device |
| CN101843020B (en) * | 2007-06-11 | 2014-05-14 | 路迈蒂姆公司 | Contactless multispectral biometric capture |
-
2009
- 2009-04-23 DE DE102009018374A patent/DE102009018374A1/en not_active Withdrawn
-
2010
- 2010-04-23 EP EP10719733A patent/EP2422296A2/en not_active Withdrawn
- 2010-04-23 WO PCT/EP2010/002515 patent/WO2010121824A2/en active Application Filing
- 2010-04-23 CN CN201080027359.8A patent/CN102460472B/en not_active Expired - Fee Related
- 2010-04-23 KR KR1020117027769A patent/KR101845220B1/en active IP Right Grant
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20121729U1 (en) * | 2001-05-15 | 2003-06-12 | Atelion Gmbh | Person identification with 3-dimensional finger group analysis involves analyzing fingerprint, fingertip shape from different perspectives to prevent deception using planar images |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2010121824A2 (en) | 2010-10-28 |
| EP2422296A2 (en) | 2012-02-29 |
| DE102009018374A1 (en) | 2010-10-28 |
| WO2010121824A3 (en) | 2011-01-20 |
| KR20120028309A (en) | 2012-03-22 |
| KR101845220B1 (en) | 2018-04-05 |
| CN102460472B (en) | 2016-05-11 |
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