CN1114441A - Hologram recognizing system - Google Patents
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- CN1114441A CN1114441A CN 94106595 CN94106595A CN1114441A CN 1114441 A CN1114441 A CN 1114441A CN 94106595 CN94106595 CN 94106595 CN 94106595 A CN94106595 A CN 94106595A CN 1114441 A CN1114441 A CN 1114441A
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Abstract
The recognition system of hologram comprises hologram regeneration bench with picture holder and movable laser source for generating hologram image; reader including CCD or scanner, optical photography assembly or project screen for detecting regenerated holographic image and converting it into electric signals, and computer system for receiving and comparing said electric signals to identify the correctness of read image and controlling the movement of laser source.
Description
The invention relates to a kind of holographic technique (Holography), particularly relevant for a kind of hologram image identification system, utilize the holograms figure of the former physiological regeneration desire identification of holographic photography, and it is compared with the comparative pattern that stores in advance, with and judge the correctness of the hologram image figure of being discerned.
The photographic origin of full figure can trace back to the notion of the in-line holographic photo (In-Line Hologram) that Denis's lattice in 1948 cypress in Christian era (DennisGabor) proposed.But owing to lack good high coherence light source, therefore after nineteen sixty in Christian era developed for laser, holographic technique just had significant progress at that time.1962 Christian eras, Upatn-ineks utilizes laser to implement holographic photography, and develop from axle holograms (Off-AxisHologram), Dual Images and the problem of diffraction light interference etc. have not been overcome in the in-line holographic photo, become the standard method of the off-axis holography technology that today, holography was used always, and the three-dimensional space image that has confirmed arbitrary shaped body can note, thereby makes the development of holography and use extensive day by day.
The shooting principle of holograms mainly is to be to note Light Interference Streaks on the sensitive film, and this interference fringe is caused by two bundle coherent lights (laser is the one example).This two bundle have in coherent light a branch of be from the light source direct irradiation to sensitive film, be commonly referred to as reference light, and another Shu Ze is incident upon on the desire record object from light source, diffusion is called according to thing light to sensitive film again.This two light beam, promptly reference light and photograph thing light can form the relevant interference fringe of three-dimensional shape that writes down object with desire on sensitive film, and this promptly is the making of holograms.Be generally the relevant fully reference beam of acquisition and according to thing light, all be utilize spectroscope will be divided into from a branch of light of light source one direct irradiation to the sensitive film reference light and one expose to earlier on the desire record object, again diffusion to the sensitive film according to thing light.The interference fringe that these two strands of coherent lights cause on sensitive film can manifest various light and shades or concave and convex stripe, and these stripeds can be considered a kind of optical slot because these stripeds are quite tiny, so when light by the time can produce the diffraction phenomenon.
For bigger object, because single light beam may be not enough to cover whole desire record object according to thing light, and may produce shade on this object, therefore often need to use two bundles according to thing light, to object, this is called two according to thing light holograms from different angular illumination.
Regeneration as for hologram, it then is used identical coherent light irradiation holograms when utilizing with the holograms shooting, when this coherent light during by the interference fringe on the holograms, can be by the direction diffraction of flexion to various complexity, and the light meeting of this diffraction when taking according to the same the carrying out of the thing light situation that diffusion is come out on object, thereby appear the stereopsis that to have the entity sense in one's mind.So, reproduced light produces diffraction by passing the careful striped on the holograms, and advancing after utilizing these diffraction light by sensitive film, the stereopsis that originally was recorded object is reappeared, this promptly is the regeneration reconstruction of hologram.
Basically, holograms can be divided into penetration holograms and reflective holographic photo generally according to the difference of image pickup method.So-called penetration holograms is reference light and the captured holograms that causes in the same side that is positioned at sensitive film according to thing light, because when image reconstruction, must penetrate sensitive film and generate image with the reproduced light irradiation of image reconstruction, so be called penetration, reflective then being projected on the sensitive film from opposite two sides of sensitive film with reference light with according to thing light when taking finished, and also is that to expose to the reflected light of sensitive film by reproduced light formed when image reconstruction.
Some characteristics that can learn hologram image by the shooting and the regeneration principle of holograms, for example:
(1) because what write down on the holograms is reference light and according to the thing Light Interference Streaks, so what presented on the holograms is " unrest seven or eight grooves " striped and spot (interference fringe of laser) that some naked eyes institute can't interpretation.
(2) be the interference fringe of the whole audience owing to what write down on the holograms, therefore any point on the holograms all can manifest the image of the object that writes down under the irradiation of reproduced light in theory, be not unlimited short only because of employed Wavelength of Laser, therefore this point still has its restriction, but generally speaking, only need the sub-fraction of the original holograms of intercepting can make the intactly video picture of regeneration object, the area that is intercepted is big more, and then image is clear more.
(3) because holograms is reference light and photograph thing Light Interference Streaks, and its regeneration is to utilize and the identical reproduced light irradiation of reference light holograms, produce diffraction, and image is regenerated, therefore if appreciative perspective or reproduced light angle are incorrect, all can't correctly watch the image of original record.In addition, it also can note the different interference fringes that produced by different reference light angles on same holograms, therefore can write down considerable image on a holograms, and not interfere with each other; Therefore when rebuilding a hologram, employed regeneration light beam wavelength must be the identical coherent light of reference beam wavelength when taking, and its irradiating angle also must be identical with reference light, the image of object is correctly manifested, and the position that object image presented is this object conjugate position when taking.
(4) be the careful interference fringe of laser because of what write down, so holograms have quite high storage density.
Holographic technique is owing to have such feature, thus its application suitable extensively.Use artistically self-evident, for example stereotelevision, three-dimensional film etc., even can produce new artistic expression, and on science, the application of holographic technique and contribution are limitless especially.For example in nondestructive test, holographic technique can be bad etc. in order to test material surface slit, material internal gummed, and the application that other non-destructive detects still includes: the geometric surface of optical mirror slip and curvature and the detection of analysing detection, plastic yield and the residual stress of detection, object ovality and the flatness of penetrating coefficient, the analysis of heat flow field distribution, isocontour measurement, resin fibre crystallization bottom surface status detection etc.
Application as for others, application on for example the three-dimensional space shows, modal is exactly recognition image on the credit card, in addition on being applied in the advertisement, showing that explanation is gone up of three-dimensional space image, the certificate and the medical diagnosis image processing is first-class all can be applied.On data storing, holographic technique can store photochrome in order to record in addition, or with microfilm form storage data.
Except that above-mentioned application mode, holographic technique still has many other application, for example identification of figure etc.
Used holograms doing false proof usefulness (as the hologram pattern on the credit card) on the certificate at present, but its differentiation all is with naked eyes for it, can't correctly determine incident angle of light and diffraction reconstructed image angle, and fail to bring into play the distinctive advantage of holograms, and holograms also has the people to be copied recently, but the holograms that as previously mentioned, obtain to have simultaneously same reference optic angle and image diffraction position is suitable difficulty.
The object of the present invention is to provide a kind of hologram image identification system, it utilizes the principle of holographic technique to differentiate the correctness of the holograms of certificate or identification card.This kind provided by the present invention system is suitable height for the fiduciary level of true and false identification, is quite useful for the discriminating of proof of identification or credit card.
Hologram recognizing system of the present invention includes hologram image regeneration platform, it has a holograms grip slipper movably, for the clamping holograms, with a LASER Light Source movably, but projecting laser is to the holograms to be identified that is clamped on the holograms grip slipper, to produce hologram; The hologram image reading device includes charge-coupled device (CCD) or scanister, and optics poly-picture assembly or projection screen, in order to the hologram that sensing detection generated, and will convert electric signal to; And computer system, can receive the electric signal that is produced by the hologram image reading device, and stored view data in itself and the memory bank compared, whether correct to differentiate the image that is read, this computer system also can be in order to the action of control movable light source, so that laser is projected on the holographic images photo to be identified with correct angle.
For being described more specifically the present invention, following conjunction with figs. is illustrated at some embodiments of the present invention, but should be appreciated that, these embodiment only are examples more of the present invention, and scope of the present invention is not only for this.In the accompanying drawings:
Fig. 1 shows the holographic basic shooting configuration of penetration.
Fig. 2 shows the configuration scenario of penetration holograms regeneration, and this kind configuration can produce the virtual image.
Fig. 3 shows that the another kind of penetration holograms regeneration is put and joins situation that this kind configuration can produce the conjugation real image.
Fig. 4 shows the basic shooting configuration of reflective holographic photography.
Fig. 5 shows the partial section view of the holograms that is coated with the reflection horizon.
Fig. 6 shows the synoptic diagram of penetration hologram recognizing system embodiment of the present invention.
Fig. 7 shows the synoptic diagram of another embodiment of penetration hologram recognizing system of the present invention.
Fig. 8 shows the synoptic diagram of reflective holographic image identification system embodiment of the present invention.
Fig. 9 (A, B, C) shows one of the applied figure control methods of the present invention preferred embodiment, wherein A is stored in the interior comparative pattern of computer storage unit in partly being, B is the desire identification figure for being read by the hologram image reading device partly, and C partly desires the figure of identification for another that is read by the hologram image reading device.
Figure 10 (A, B) shows an embodiment of the grating bar code among the present invention, and wherein A partly is that grating fringe amplifies figure, and B partly is its diffraction luminous point.
Figure 11 (A, B) shows another embodiment of the grating bar code among the present invention, and wherein A partly is that grating fringe amplifies figure, and B partly is its diffraction luminous point.
Figure 12 (A, B) shows an embodiment again of the grating bar code among the present invention, and wherein A represents that partly grating fringe amplifies figure, and B partly is the some of its diffraction luminous point.
For being illustrated more clearly in characteristics of the present invention, before hologram recognizing system of the present invention is illustrated, cooperate Fig. 1 to Fig. 4 that the shooting of penetration holograms and reflective holographic photo and the basic configuration of regeneration roughly are described earlier.At first consult Fig. 1, it schematically shows the basic configuration that the penetration holograms is taken.Can see that in the drawings the beam of laser LB that is sent by LASER Light Source 10 is divided into reference beam RB and shines object beam OB via spectroscope 12.After reference light RB passes lens 14, directly be projected on the holofilm 160, then be projected to behind the scioptics 18 on the object 20 that desire write down according to object beam OB, and then diffusion is to holofilm 160, wherein reference light RB and all be projected on the surface, the same side of holofilm 160 according to thing light OB.By on holofilm 160, forming the stereo-picture that interference fringe can write down object 20 according to object beam OB and reference beam RB.Reference symbol M among Fig. 1 represents catoptron.So the then available configuration shown in Figure 2 of regeneration of the image in the captured holofilm that obtains 160 is carried out.
The regeneration that in Fig. 2, shows the penetration hologram.A LASER Light Source 24 wherein is set, and it can send with holograms and take used LASER Light Source 10 identical reproduced light DB, that is the reference light RB among reproduced light DB and Fig. 1 is identical coherent light.Reproduced light DB is through behind the lens 26, and exposes on the holograms 16 with the same direction of reference light RB, and observer H can see the virtual image 20 of object 20 ' the be presented on rear of holograms when the forward observation of holograms 16.
If reproduced light DB exposes on the holograms 16 with the direction opposite with reference light, also be about to holograms 16 anti-turnbacks, then can produce the conjugation real image 20 of object 20 in the place ahead of holograms 16 ", as shown in Figure 3.
The shooting configuration of reflective holographic photo then is presented among Fig. 4.As the configuration of the penetration holograms shown in Fig. 1, also include a LASER Light Source 10 in the shooting of the reflective holographic photo configuration, the laser beam LB that launches on it will be divided into reference light RB and shine thing light OB through a spectroscope 12.Reference light RB through lens 14 after, direct irradiation, exposes to the object 20 that desire is taken earlier, and then reflexes on the holofilm 160 on this object 20 certainly then by behind the lens 18 according to thing light OB to holofilm 160.What must pay special attention to is, in the reflective holographic photo, reference light RB and be that different directions is projected on the holofilm 160 according to thing light OB that is to say it is to be projected to respectively on the two opposite sides of holofilm 160, and forms interference fringe thereon.The regeneration principle of the image of reflective holographic photo is the same with penetration, is to utilize a branch of reproducing laser identical with reference light, is projected to holofilm 160 with equal angular the image of object 20 is displayed.Do not repeat them here.
If on the one side that interference fringe is arranged on the hologram sheet, plate one deck reflection horizon, metallic reflector for example, as shown in Figure 5, because the reflex that cause in this reflection horizon, the image that hologram sheet is regenerated and generated is no matter be that the real image or the virtual image all can be presented on and when originally not plating the reflection horizon on the opposite position.Virtual image situation with Fig. 2 is an example, if plate layer of metal reflection horizon 270 on the hologram sheet 260, then originally is created on the virtual image 20 at hologram sheet 260 rears ' will be reflected onto the place ahead of hologram sheet 260 because of the reflex in reflection horizon 270.The benefit that use is coated with the holograms of metallic reflector is, if the space at hologram sheet rear is limited, is unsuitable for setting up the image projecting screen, then image can be presented on bigger the place ahead, space, so can save the space.
After the applied principle of explanation the present invention, hereinafter hardware setting of the present invention and principle of operation thereof will be described then.
At first see also Fig. 6, wherein schematically show hologram image device for identifying of the present invention, mainly comprise three partly, a hologram image regeneration platform 30, a hologram image reading device 40 and a computer system 50.The table top 31 of hologram image regeneration platform 30 put on the shelf be provided with one can parallel up and down mobile holograms grip slipper 32, can on regenerating platform 30, move hologram image, so that holograms 16 (the penetration holograms as shown in Fig. 1 to Fig. 3) is moved on the identification position.Moving of holograms grip slipper 32 can be controlled by computing machine 50, and for example holograms grip slipper 32 is to utilize the step motor (not shown) to be driven, and this step motor is then controlled by computer 50 via circuit 52 and turned round.16 of holograms are to be clamped on this holograms grip slipper 32 in a kind of mode that can arbitrarily take off or load onto, the device of its clamping or fixed hologram photo 16 can be any suitable device, clip for example, or only be that a stria inserts in it for holograms, or other big device that gives that share, serially holograms to be identified is moved on the identification position seriatim.
On the other hand, for producing hologram, on putting on the shelf, the table top 31 of hologram image regeneration platform 30 is provided with at least one coherent source 33, so that projection reproduced light DB is to holograms 16, this coherent source 33 can be any suitable LASER Light Source or other coherent light, laser diode etc. for example, hereinafter for simplicity, represent used coherent light of holographic technique and coherent source with laser or LASER Light Source, but should be appreciated that, be fit to coherent light used in the present invention and be not limited in laser, and described herein coherent light, being meant can be for any suitable light of holographic technique use.For obtaining correct laser incident angle, lasing light emitter 33 devices move seat on 34 (hereinafter being called the laser holder) one, this laser holder 34 then can around one be that the curved path at center is done two-way moving with the identification position of holograms 16 haply, shown in arrow A among Fig. 6.Moving of laser holder 34 also controlled by computing machine 50 via a lead 54.The projection of laser regeneration light beam DB then also can be controlled via lead group 54 by computing machine 50, or carries out in the manual manipulation mode.
The another kind of mode that produces correct incident angle laser is to use a plurality of LASER Light Source 33, it is separately fixed on some fixed angle, as shown in Figure 7, and optionally produce the laser beam DB of required angle, the setting that can omit laser holder 34 in this way.The startup of these LASER Light Source 33 also can be controlled via lead group 54 by computing machine 50, or with manual operation.
The hologram image reading device 40 of hologram image device for identifying of the present invention includes a charge-coupled device (CCD) 41, has a sensing element 42 on it, the hologram that can generate for detection laser light beam DB diffraction process holograms 16, after this image reads via charge-coupled device (CCD) 41 and converts electric signal to, will be sent on the computing machine 50 via lead group 56.Please pay special attention to, because the device shown in Fig. 6 and Fig. 7 uses for the penetration holograms, therefore hologram image reading device 40 and LASER Light Source 33 are positioned on opposite two sides of holograms 16, for the holograms that is coated with metallic reflector, this two set of pieces will be positioned at the same side, as shown in Figure 8.
For the hologram of regeneration can clearly be revealed on the sensing element 42, between hologram image reading device 40 and holograms 16, an optical concentration element can be set in addition, as lens 43.
Because the power of the laser beam that LASER Light Source 33 is sent may be unstable because of any factor, for making hologram image reading device 40 can more positively read the hologram that is generated by laser diffraction, therefore on LASER Light Source 33, can add a light intensity sensor 35, a photo-resistor for example, for providing the unsettled information of laser beam DB to charge-coupled device (CCD) 41, to revise the diffraction image light intensity of its sensing.
If the holograms rear does not have the space that is enough to be provided with hologram image reading device 40, then cooperate shown in Figure 5 as the front, can on holograms, plate the layer of metal reflection horizon, and hologram is imaged in and LASER Light Source the same side (for the penetration holograms).
Show among Fig. 8 that hologram recognizing system of the present invention is for the employed device of reflective holographic photo.Penetration holograms device for identifying shown in the device for identifying of reflective holographic photo and Fig. 6 or Fig. 7 is similar, have a holograms grip slipper 32, can holograms 16 ' (reflective holographic photo as shown in Figure 4) be moved on the identification position by computing machine 50 controls; LASER Light Source 33 can be done two-way arc along path B and be moved by computer control laser holder 34, so as with laser beam DB with correct angle be projected to holograms 16 ' on; One poly-picture lens 43 can be focused to hologram on the sensing element 42 of hologram image reading device 40, for converting thereof into electric signal by charge-coupled device (CCD) 41, are sent on the computing machine 50, are contrasted.Certainly, mode as shown in Figure 7 is the same, and the LASER Light Source 33 in the reflective devices also can have a plurality of light emitting sources, is separately fixed at given position on the table top 31 of hologram image regeneration platform 30.
In the use, the working method of above-mentioned hologram image device for identifying be earlier with holograms 16 to be identified or 16 ' by holograms grip slipper 32 via computing machine 50 controls and move on the identification position, again with LASER Light Source 33 from different angles projecting laser light beam DB to holograms 16 or 16 ' on, and read the hologram that is generated by the hologram image reading device, compare with the comparative pattern of memory cell one by one by computing machine.In contrast when correct, and the incident angle of recording laser light beam DB, the incident angle data of itself and storage unit are compared.Have only when the two data of figure and angle are all coincide, entirely true to Bizet.
The change of the incident angle of above-mentioned laser beam DB can (1) by artificial setting, and by computing machine 50 controls, or by manually controlling; Or (2) are set by computer software, progressively move by computing machine 50 control laser holders 34, look for different incident reproducing laser beam angles, the result that the image that goes out according to institute's diffraction and the data of storage unit compare and write down at that time angle does the contrast of angle again.
It is quite ripe in today to utilize computing machine to carry out the technology of figure contrast, therefore only explains a kind of preferred figure way of contrast with a simple explanation at this.See also Fig. 9, it shows an example of figure control methods used in the present invention.A among Fig. 9 partly is the comparative pattern that is stored in the representative in the Computer Storage unit, wherein white is background partly, and black part is a comparative pattern, according to general computer graphical representation mode, this figure can be considered by many pixels and is constituted, on its each equal representative of graphics a bit, if grey value representation with light intensity, then each pixel detects the light intensity value of each pixel of image according to the sensing element on the reading device, and gray-scale value that can computing machine is represented the size of its light intensity.And when gray scale numerical value is 0, represent the pixel of dim spot, and gray scale numerical value is at 255 o'clock, represent the pixel of bright spot.With 2 among Fig. 9 A be example, establish its coordinate and be respectively (1,1) and (n, n), wherein (1,1) position the background of non-figure partly on, and (n, n) then figure partly on, therefore as if representing with gray-scale value, if the value of (1,1) some pixel is X, and (n, n) value of some pixel is Y.Figure that on behalf of the desire that read from the hologram image reading device, the B of Fig. 9 partly contrasted also can be considered and is made of a plurality of pixel, and each pixel is then corresponding with the pixel among Fig. 9 A.On Fig. 9 B, also indicate two pixels (1,1) and (n, n), for the usefulness of correspondence.When comparing, A figure partly can be deducted B figure partly.In subtraction, if any corresponding same point has different numerical value and makes its difference non-vanishing in A figure and the B figure, then error amount is added 1, making its difference if both have identical numerical value is zero, does not then add 1.So detect after all pixels always, if gained error amount accumulation result is not more than a certain setting value, represent that then the error between two figures (A and B) is little, representative contrasts successfully.Briefly, with among figure A and the B (n is n) for example, because (n in the two, n) value is Y, therefore when detecting this, error amount does not increase by 1, but for (the m among figure A and the C, m), because the two light intensity gray scale numerical value difference, so after detecting this point, error amount must increase by 1.Hence one can see that, and this error amount is promptly represented the number of the different pixel of numerical value between the two figure A and C.
In addition, also can learn by above-mentioned, the instability of laser also may have influence on the gray scale numerical value of diffraction image light intensity, therefore be necessary one spectroscope to be set at laser beam exit wound of bullet place, tell the laser of sub-fraction, and utilize photoresistance to detect its variation situation, input in the computing machine, for revising gray scale numerical value.
Because the figure directly interpretation with the naked eye that the hologram image camera work is captured, must be with the identical reproduced light of reference light when taking, just can make image regeneration with identical angular illumination holograms, and its image of rebuilding be the position on the angle and position identical with captured object, therefore triple contrasts can be done by system of the present invention:
(1) contrast of laser incident angle.
(2) the image diffraction position of Chong Jianing and the contrast of angle.
(3) contrast of image itself.
Because therefore the interpretation with the naked eye of this kind data can have high security.And because of holograms store recording density is quite high, therefore need not use too big area, generally speaking only need 3mm * 3mm to get final product.The interference fringe of holograms must be under particular condition in addition, can obtain desire figure, therefore be not easy to copy.So the kind system than the high security and the identification certificate that need be easy to carry about with one, as the application on the credit card, is quite favourable at need, splendid anti-system ability arranged for counterfeit.
Because what write down on the holograms is the interference fringe of light wave, this kind interference fringe then can be considered a kind of grating when the reconstruction of hologram, when shining thereon, reproduced light can produce the diffraction phenomenon, therefore except the stereopsis of record object, this kind holographic technique also can be in order to " setting " certain symbol, for example figure.For the grating with the interference fringe of being arranged in parallel, it is a row luminous point that its diffraction chart that is produced after laser radiation looks like, as shown in figure 10.In Figure 10, A partly represents to have the lenticular lenses that the interference fringe of being arranged in parallel is amplified, and supposes that interfringe spacing is definite value d, and the diffraction luminous point that is then produced is shown in the B part of Figure 10, and the distance L between wantonly two adjacent luminous points also is a definite value, and is the value decision by d.In like manner, if having two groups of parallel grating fringes on the lenticular lenses, one group is horizontal, another group is homeotropic alignment, and shown in Figure 11 A, then the spot arrangement of its gained is rectangular, shown in Figure 11 B, similarly the distance between luminous point also is by the decision of the spacing of grating.Therefore if under given condition, for example the distance between lenticular lenses and projection screen is fixed, then can come as a kind of bar code by the density of grating, represent certain symbol, as figure, because of the grating of different spacing can produce the luminous point of different spacing, and different luminous point spacings can be in order to represent different numerals.By preceding described, holograms is exactly a kind of by the grating that laser interferencefringes constituted basically, so the present invention can provide the reading device of grating bar code further.Therefore hologram recognizing system of the present invention can further include the application of grating bar code, and this has more confidentiality for the setting of numbering on the certificate.
For the certificate that is provided with hologram image figure and grating bar code simultaneously, according to the present invention, its identification mode will read its grating bar code earlier, separate numeral or the symbol of reading its representative, then carries out the hologram image identification described in the preamble again.
Characteristics of grating bar code are that it can concentrate on a plurality of numerals or symbol in the single raster pattern.See also Figure 12, wherein A partly is its concentrated type grating bar code graphics, and B partly shows the some of its diffraction luminous point.In Figure 12 A, arrow G 1, G2, G3 and G4 represent the direction of the parallel grating with different densities respectively, wherein the density of G1 grating is assumed to be every millimeter 100 grating fringes, G2 is 200, G3 is 300, and G4 is 400, if the diffraction luminous point spacing of supposition G1 is 1 unit, then the diffraction luminous point spacing that presented on angle separately of each grating fringe is respectively 1,2,3 and 4 units, shown in Figure 12 B.Therefore the holographic grating figure is being read its diffraction luminous point spacing according to different angles, can separate and read four numerals or four kinds of symbols.Above-described four direction 45 degree of being separated by respectively but also can use different interval angles, and make numeral or the symbol that can store different numbers in the raster pattern, can deposit six kinds of numerals or symbol in as 30 degree at interval, therefore can increase the storage capacity of information.
The above only is some embodiments of the present invention; any personnel that know this technology can derive out many other relevant application or devices; therefore for the various variations or the modification that do not break away from the present patent application claim institute restricted portion, all should be considered as the scope of the application's case institute desire protection.
Claims (14)
1. hologram recognizing system includes:
One hologram image regeneration platform has a holograms grip slipper movably, for the clamping holograms, and laser source system, but projecting laser is to the holograms to be identified that is clamped on the holograms grip slipper, to produce hologram;
The hologram image reading device includes charge-coupled device (CCD) or scanister, includes a sensing element on it, can be in order to the sensing detection hologram that holograms to be identified generates because of laser beam is projected to, and convert thereof into electric signal; And
Computer system, can receive the electric signal that is produced by the hologram image reading device, and utilize a contrast program that stored comparative pattern data in itself and the storage unit are compared, whether correct to differentiate the image that is read, this computer system also can be used for controlling the laser source system action, so that laser is projected on the holograms to be measured with desired angle, and the moving of may command holograms grip slipper, so that holograms to be identified is moved on the position of identification.
2. hologram recognizing system according to claim 1 further includes the poly-picture of optics device, the hologram that is produced on holograms to be identified can be focused on the sensing element of full figure reading device.
3. hologram recognizing system according to claim 1 further includes a projection screen, the hologram that is produced on holograms to be identified can be projected on the projection screen, detects hologram on it by the hologram image reading device again.
4. hologram recognizing system according to claim 1, wherein this laser source system includes a laser holder movably, can be thereon for laser light-source device, and can be controlled by computer system and move to desired location, so that laser beam is projected on the holograms to be identified by required angle.
5. hologram recognizing system according to claim 1, wherein this laser source system includes a plurality of LASER Light Source, be separately fixed on the given positions different on the hologram image regeneration platform, by its light and shade of computer system control, laser beam is projected on the holograms to be identified by required angle.
6. hologram recognizing system according to claim 1, wherein this computer system includes a monitor, can be for the operating process of monitoring hologram recognizing system.
7. hologram recognizing system according to claim 1, the comparative pattern that wherein is stored in the computer system stores unit includes a plurality of pixels, its each represent by a light intensity gray scale numerical value, wherein gray-scale value 0 is represented the pixel of dim spot, gray-scale value 255 is then represented bright spot pixel, this hologram to be identified is after the hologram image reading device converts electric signal to, also include a plurality of pixel signals with gray scale numerical value, the contrast of the two is that corresponding pixel gray scale numerical value is compared.
8. hologram recognizing system according to claim 7, the pixel that the contrast routine package of figure wherein to be identified and original figure contains figure to be identified converts its light intensity gray scale numerical value to, and the gray scale numerical value of each corresponding pixel of two figures compared, if the difference of the two is non-vanishing, then the numerical value with an error amount adds up 1, if its value is zero, then the numerical value of this error amount is not added up, after all pixels all contrast, error amount is compared with an error reference value, if less than the error reference value, then the expression contrast is correct.
9. hologram recognizing system according to claim 1, wherein after the Figure recognition success, the recording laser light beam is incident to the angle on the holograms to be identified, and this angle is compared with the original angle data in the Computer Storage unit.
10. hologram recognizing system according to claim 1, wherein this LASER Light Source further has a light intensity sensor, with the instability of detection laser light source, the diffraction image light intensity of revising charge-coupled device (CCD) according to this and being detected.
11. hologram image identification card, the hologram that has an identification usefulness on it, and has a grating bar code holograms, for further identification, wherein this grating bar code comprises the parallel grating of many groups, each group grating is made of many equally spaced parallel grating stripeds, after via laser beam irradiation, can on screen, form equidistant luminous point, this luminous point equidistantly is that the spacing by grating is determined, therefore different grating spaces can be represented the different numerals or the information of symbol, can constitute a string numeric string of being made up of different numerals and organize grating more.
12. identification card according to claim 11, wherein this equidistant gratings strips sign indicating number is made of the hologram image interference fringe.
13. identification card according to claim 11 should equidistantly many group gratings be separated mutually wherein, and the direction that its grating extends be parallel to each other.
14. identification card according to claim 11, bearing of trends that wherein should equidistantly many group gratings are to intermesh at interval and uneven with special angle, and respectively organize grating and stack together mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94106595 CN1114441A (en) | 1994-06-29 | 1994-06-29 | Hologram recognizing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94106595 CN1114441A (en) | 1994-06-29 | 1994-06-29 | Hologram recognizing system |
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| Publication Number | Publication Date |
|---|---|
| CN1114441A true CN1114441A (en) | 1996-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94106595 Pending CN1114441A (en) | 1994-06-29 | 1994-06-29 | Hologram recognizing system |
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| CN (1) | CN1114441A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100338580C (en) * | 2004-09-06 | 2007-09-19 | 宇东电浆科技股份有限公司 | Moving detecting method and its detecting system for light receivel sending module |
| CN100376889C (en) * | 2004-12-31 | 2008-03-26 | 张健 | Intelligent digital graphics context detection system and detection method |
| CN100428085C (en) * | 2003-08-28 | 2008-10-22 | 明基电通股份有限公司 | Image aquisition method and relative apparatus |
| CN100447686C (en) * | 2005-04-11 | 2008-12-31 | 索尼株式会社 | Optical recording medium, rendition apparatus and rendition method |
| CN102077567A (en) * | 2009-02-27 | 2011-05-25 | 松下电器产业株式会社 | Reading device |
| CN102507606A (en) * | 2011-10-19 | 2012-06-20 | 苏州奥美材料科技有限公司 | Cross grain online detection device for high-transparency polycarbonate sheet |
| CN103411753A (en) * | 2013-07-19 | 2013-11-27 | 苏州佳世达电通有限公司 | Image detecting system of optical module |
| US9600700B1 (en) | 2015-08-31 | 2017-03-21 | Pixart Imaging Inc. | Portable electronic device and operation method thereof |
| US9805239B2 (en) | 2015-08-31 | 2017-10-31 | Pixart Imagine Inc. | QR code detecting device and operation method thereof |
| US9805236B2 (en) | 2015-08-31 | 2017-10-31 | Pixart Imaging Inc. | Coding and decoding method using patterns and system thereof |
| CN114994941A (en) * | 2022-06-28 | 2022-09-02 | 平安银行股份有限公司 | Three-dimensional display method, device, medium and equipment based on short wave light beam |
-
1994
- 1994-06-29 CN CN 94106595 patent/CN1114441A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100428085C (en) * | 2003-08-28 | 2008-10-22 | 明基电通股份有限公司 | Image aquisition method and relative apparatus |
| CN100338580C (en) * | 2004-09-06 | 2007-09-19 | 宇东电浆科技股份有限公司 | Moving detecting method and its detecting system for light receivel sending module |
| CN100376889C (en) * | 2004-12-31 | 2008-03-26 | 张健 | Intelligent digital graphics context detection system and detection method |
| CN100447686C (en) * | 2005-04-11 | 2008-12-31 | 索尼株式会社 | Optical recording medium, rendition apparatus and rendition method |
| CN102077567A (en) * | 2009-02-27 | 2011-05-25 | 松下电器产业株式会社 | Reading device |
| CN102077567B (en) * | 2009-02-27 | 2014-06-25 | 松下电器产业株式会社 | Reading device |
| CN102507606A (en) * | 2011-10-19 | 2012-06-20 | 苏州奥美材料科技有限公司 | Cross grain online detection device for high-transparency polycarbonate sheet |
| CN103411753A (en) * | 2013-07-19 | 2013-11-27 | 苏州佳世达电通有限公司 | Image detecting system of optical module |
| US9600700B1 (en) | 2015-08-31 | 2017-03-21 | Pixart Imaging Inc. | Portable electronic device and operation method thereof |
| US9805239B2 (en) | 2015-08-31 | 2017-10-31 | Pixart Imagine Inc. | QR code detecting device and operation method thereof |
| US9805236B2 (en) | 2015-08-31 | 2017-10-31 | Pixart Imaging Inc. | Coding and decoding method using patterns and system thereof |
| CN114994941A (en) * | 2022-06-28 | 2022-09-02 | 平安银行股份有限公司 | Three-dimensional display method, device, medium and equipment based on short wave light beam |
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