CN100557645C - The distinguishing method between true and false of right documents such as a kind of certificate, certificate, bill - Google Patents
The distinguishing method between true and false of right documents such as a kind of certificate, certificate, bill Download PDFInfo
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- CN100557645C CN100557645C CNB2005100346104A CN200510034610A CN100557645C CN 100557645 C CN100557645 C CN 100557645C CN B2005100346104 A CNB2005100346104 A CN B2005100346104A CN 200510034610 A CN200510034610 A CN 200510034610A CN 100557645 C CN100557645 C CN 100557645C
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000003287 optical effect Effects 0.000 claims abstract description 30
- 238000003384 imaging method Methods 0.000 claims abstract description 25
- 230000003595 spectral effect Effects 0.000 claims abstract description 11
- 230000008878 coupling Effects 0.000 claims abstract description 9
- 238000010168 coupling process Methods 0.000 claims abstract description 9
- 238000005859 coupling reaction Methods 0.000 claims abstract description 9
- 230000003760 hair shine Effects 0.000 claims description 5
- 238000001228 spectrum Methods 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000004044 response Effects 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims description 2
- 241001331845 Equus asinus x caballus Species 0.000 claims 2
- 238000012850 discrimination method Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 12
- 239000012876 carrier material Substances 0.000 description 2
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- 230000002950 deficient Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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Abstract
The invention discloses the distinguishing method between true and false of right documents such as a kind of certificate, certificate, bill.The present invention adopts the security feature of the rayed aforesaid right document that is no less than two wave bands, the imaging spectral information under the irradiation of the light of generation different-waveband.When carrying out real and fake discrimination, the genuine bidimensional image that forms after the rayed of different-waveband and bidimensional image to be identified is checked one by one, relatively, conform to then for true, otherwise then be vacation.Adopt above-mentioned discrimination method, help finding the spectral characteristic difference of true and false security feature, differentiate true and false purpose thereby reach.For including the security feature of character, can also obtain and filter out the strongest bidimensional image of character and background contrasts of living in and carry out optical character identification (OCR) processing, and above-mentioned character retrieved in associated databases, retrieve coupling character and imaging spectral information conform to then be judged as true, otherwise be false, can also further improve by above-mentioned steps and differentiate true and false effect.
Description
Technical field
The present invention relates to a kind of distinguishing method between true and false, especially relate to the distinguishing method between true and false of right documents such as a kind of certificate, certificate, bill.
Background technology
The distinguishing method between true and false of right documents such as present certificate, certificate, bill comprises the steps:
A, light source produce irradiates light;
B, the irradiates light that adopts a step to produce shine the security feature zone of right documents such as certificate, certificate, bill, produce imaging;
C, photoelectric sensor receive the imaging that the b step produces by the optical imagery assembly, and convert the bidimensional image information of described security feature to.
If will carry out the true and false judges, then at first produce the bidimensional image information of right document security features such as genuine certificate, certificate, bill by the c step, and above-mentioned bidimensional image information is pre-stored in the storer, perhaps place on other visual carriers, perhaps remember merely in people's brain.In the time will carrying out real and fake discrimination, obtain the bidimensional image information of right document security features such as the certificate that will differentiate, certificate, bill by the c step, and the bidimensional image information of right document security features such as genuine certificate, certificate, bill and bidimensional image information to be identified are compared, check by artificial or computing machine, it then is true conforming to, and is not inconsistent then for false.Wherein, described security feature is a kind of in the visible logo of human eye, seal, signature, pattern, form, character, shading, watermark, the hologram or is no less than any combination of two kinds; Right documents such as described certificate, certificate, bill mainly comprise: certificates such as passport, I.D., temporary residency card, residence booklet, marriage certificate, army's testimony of a witness, driver's license, driving license, social security card, insurance card, medical card, health certificate, the pass, credit card; Certificates such as industrial and commercial operation license, enterprises and institutions' code card, Tax Registration Certificate, health quarantine card, inspection and quarantine certificate, property ownership certificate, licence; Bills such as costoms forms, tax document, insurance document, bank's document, check, draft, cashier's cheque, security, banknote.
The distinguishing method between true and false of right documents such as above-mentioned certificate, certificate, bill, because what radiation source adopted is a broadband light, be difficult to according to the different ink characteristics of the security feature of aforesaid right document, typography, and printing characteristic such as information carrier material is made tangible response.Above-mentioned defective has limited the true and false identification result of right documents such as certificate, certificate, bill greatly.
Summary of the invention
Technical matters to be solved by this invention provides the distinguishing method between true and false of right documents such as a kind of high-effect certificate, certificate, bill.
For solving the problems of the technologies described above, the present invention includes following steps:
A, light source produce irradiates light;
B, the irradiates light that adopts a step to produce shine the security feature zone of right documents such as certificate, certificate, bill, produce imaging;
C, photoelectric sensor receive the imaging that the b step produces by the optical imagery assembly, and convert the bidimensional image information of described security feature to;
D, obtain the bidimensional image information of right document security features such as genuine certificate, certificate, bill by the c step;
E, obtain the bidimensional image information of right document security features such as certificate to be identified, certificate, bill by the c step;
F, the bidimensional image information that two steps of d, e are generated are carried out computing machine contrast or artificial contrast automatically;
G, above-mentioned comparing result is judged, then differentiated for true, otherwise then differentiate for false if conform to;
Wherein, described security feature be material and human eye visible with sightless logo, seal, signature, pattern, form, character, shading, watermark, hologram in a kind of or be no less than two kinds combination in any;
Described irradiates light comprises the light that is no less than two different-wavebands, described bidimensional image information is the imaging spectral information of the security feature that obtains after the rayed of different-waveband, described imaging is reflected light or transmitted light, after finishing described g step, can also carry out the further true and false as follows and judge:
The bidimensional image information that right document security features such as h, the certificate with to be identified, certificate, bill form under the irradiation of the light of different-waveband compares, and picks out the strongest bidimensional image information of character to be identified background contrasts of living in it as pending bidimensional image information;
I, above-mentioned pending bidimensional image information is carried out optical character identification (OCR) handle, realize the automatic typing of computing machine of character to be identified;
J, the character of the automatic typing of aforementioned calculation machine is being retrieved in corresponding security feature database;
K, make genuine/counterfeit discriminating according to the comparing result of aforementioned bidimensional image and the result for retrieval of previous step;
L, genuine/counterfeit discriminating: if comparing result is judged as true and retrieves the coupling character, then differentiate, otherwise differentiate for false for true.Perhaps genuine/counterfeit discriminating is realized by following steps:
A, if comparing result is differentiated for true and retrieve the coupling character and then differentiate for very, if comparing result is differentiated for false and do not retrieve the coupling character, then differentiate for false, otherwise enter next step;
Final genuine/counterfeit discriminating is made in b, manual analysis.As improvement of the present invention, any one or the combination in any that be no less than dual mode of the light of described different-waveband in the following manner obtains:
A, one group of light source of employing, each light source sends the light of different-waveband, and by connecting each light source successively, timesharing obtains the light of different-waveband;
B, adopt a light source, this light source sends the light of different-waveband simultaneously, by adopt successively can the conducting wave band light end the optical filter of the light of its all band, timesharing obtains the light of different-waveband;
C, employing one or one group of light source, this light source sends the light of different-waveband simultaneously, each photoelectric sensing unit of photoelectric sensor be furnished with respectively can conducting wave band light and by the optical filter of the light of its all band, when light source was connected, this photoelectric sensor can be simultaneously but is got access to the light of different-waveband in different locus.
Further improve as the present invention, the light of described different-waveband any one security feature to right documents such as certificate, certificate, bills in the following manner shines:
A, shine with a fixed angle;
B, shine to timesharing to be no less than two different angles;
C, while shine to be no less than two different angles.
Described optical imagery assembly receives described imaging by following any one mode:
A, receive with a fixed angle;
B, receive to timesharing to be no less than two different angles;
C, while receive to be no less than two different angles.
Further improve as the present invention, described photoelectric sensor constitutes by following any one mode:
A, constitute by one or more single-point type photoelectric sensing assembly and two-dimentional machinery scan components;
B, constitute by the solid-state self-scanning linear array of one or more one dimension photoelectric sensing assembly and one dimension mechanical scanning assembly;
C, constitute by one or more two-dimensional solid-state self-scanning face battle array photoelectric sensing assembly.
Further improve as the present invention, the spectral range of the light of described different-waveband and the spectral response range of described photoelectric sensor drop on ultraviolet ray, visible light, ultrared electromagnetic wave spectrum interval again.
By implementing the present invention, irradiates light comprises the light that is no less than two different-wavebands.After light source irradiation, photoelectric sensor forms the bidimensional image information of described security feature under the rayed of different-waveband after receiving imaging by the optical imagery assembly.When carrying out the real and fake discrimination of right documents such as certificate, certificate, bill, the bidimensional image information of the security feature that forms after the rayed to different-waveband is checked one by one, is compared, conform to then for true, have that the bidimensional image information of formed security feature is not inconsistent then for false after the rayed of a wave band.Because different printing ink, typography or information carrier material have different reflections or see-through property to the light of different-waveband, adopt the rayed security feature of different-waveband, help finding the spectral characteristic difference of security feature with the security feature of true right document of right document to be identified, differentiate true and false purpose thereby reach, the raising identification result.
Description of drawings
Fig. 1 receives the reflected light synoptic diagram for photoelectric sensor;
Fig. 2 receives the transmitted light synoptic diagram for photoelectric sensor;
Fig. 3 shines synoptic diagram for the light source timesharing with n angle;
Fig. 4 receives synoptic diagram for the photoelectric sensor timesharing with n angle;
Fig. 5 shines synoptic diagram with n different angles simultaneously for light source;
Fig. 6 shines with n angle for the light source timesharing, and for each irradiating angle, the photoelectric sensor timesharing receives synoptic diagram with m angle;
Fig. 7 is for producing method one synoptic diagram of different-waveband light;
Fig. 8 is for producing the method two synoptic diagram of different-waveband light;
Fig. 9 is for producing method three synoptic diagram of different-waveband light;
The light of each wave band of Figure 10 and spectrum range synoptic diagram thereof;
Figure 11 is the real and fake discrimination process flow diagram of right document.
Embodiment
As shown in Figure 1, receive the catoptrical situation of irradiates light 2 for photoelectric sensor 5.As shown in Figure 2, receive the situation of the transmitted light of the irradiates light 2 that light sources 3 send for photoelectric sensor 5.
As shown in Figure 1 and Figure 2, light source 3 sends irradiates light 2, shine on the security feature 1 of right documents such as certificate, certificate, bill, form imaging: reflected light or transmitted light, optical imagery assembly 4 receives above-mentioned imaging, by the bidimensional image information of photoelectric sensor 5 generation security features 1, carry out the true and false by computer system 6 at last and judge.
Described security feature mainly comprises: human eye is visible with a kind of of truth identification features such as sightless logo, seal, signature, pattern, form, character, shading, watermark, hologram, material or be no less than any combination of two kinds.
Described irradiates light 2 comprises the above light of a wave band, i.e. the light of several specific bands is exported in timesharing.
Shown in Fig. 3,4,5,6, receive several different situations of imaging for light source irradiation, optical imagery assembly.
As shown in Figure 3, the position changeable of light source 3 shone security feature with different angles in the different moment, and optical imagery assembly 4, photoelectric sensor 5, computer system 6 positions remain unchanged, and received imaging with fixing angle.
As shown in Figure 4, the stationkeeping of light source 3, the position changeable of optical imagery assembly 4, photoelectric sensor 5, computer system 6 receives imaging in the different moment from different angles.
Certainly, the usefulness of this example be intended to be expressed as the picture optical pickup apparatus for example in this example 4 timesharing of optical imagery assembly receive the thought of imaging with different angles.Obviously, simple optical imagery assembly 4 position timesharing are variable, and photoelectric sensor 5, computer system 6 stationkeeping also belong to covering scope of the present invention.
As shown in Figure 5, a plurality of light sources such as light source 3a, 3b, 3c, 3d spatially shine security feature with different angles, and optical imagery assembly 4, photoelectric sensor 5, computer system 6 receive the imaging that the different angles light source produces with fixing angle.
As shown in Figure 6, light source 3 timesharing are with n angular illumination security feature, and 4 timesharing of optical imagery assembly receive the imaging that irradiates light produces with m angle on different angles.
Shown in Fig. 7,8,9, for producing the method synoptic diagram of different-waveband light.
As shown in Figure 7, connect each light source successively by the sequential logic controller, the light source timesharing of different wave bands is lighted, thereby timesharing obtains the light 1～n of different-waveband.
In conjunction with the accompanying drawings 1～6, this routine implication is to express the thought that obtains the light of different-waveband by the light source of lighting different-waveband, light the light source 1～n of different-waveband obviously simultaneously, each photoelectric sensing unit of photoelectric sensor 5 be furnished with respectively can conducting wave band light and by the optical filter of the light of its all band, when light source was connected, this photoelectric sensor can be simultaneously but is got access to different-waveband light in different locus.Therefore, above-mentioned thought also belongs to covering scope of the present invention.
As shown in Figure 8, light source 3 sends the light 8 of the mixing wave band that includes wave band 1～n, and behind optical filter 7, timesharing leaches the light of wave band 1～n.Described optical filter 7 has different transmitances in the different moment to the light of different-waveband, obviously, at a time the band of light that transmitance is big is through, and mixes the irradiates light 2 of the light 8 of wave band through the light 9 conduct irradiation security features 1 of optical filter 7 back timesharing acquisition different-wavebands.
As shown in Figure 9, optical filter 7a～7b can be respectively applied for the light 9a～9b through wave band 1～n, and wherein photoelectric sensing unit 11a～11b is used for responding to light 9a～9b of wave band 1～n respectively.Particularly, the light 8 that mixes wave band produces the light 9a of wave band 1 through behind the optical filter 7a, and the light 9a of this wave band converts corresponding electric signal to by photoelectric sensing unit 11a.
As shown in figure 10, the spectral range of the light of each wave band drops on ultraviolet ray, visible light, ultrared electromagnetic wave spectrum interval.
As shown in figure 11, when carrying out real and fake discrimination, comprise the steps:
A, light source 3 produce the light of different-waveband as irradiates light 2;
B, the irradiates light 2 that adopts a step to produce shine the security feature 1 of right documents such as certificates, certificate, bill, produce imaging;
C, photoelectric sensor 5 receive the imaging that the b step produces by optical imagery assembly 4, and form the bidimensional image information of described security feature;
D, obtain the bidimensional image information of right document security features such as genuine certificate, certificate, bill in advance by the c step;
E, obtain the bidimensional image information of right document security features such as the certificate that need carry out real and fake discrimination, certificate, bill by the c step;
F, the bidimensional image information that two steps of d, e are produced are carried out computing machine contrast or artificial contrast automatically by computer system 6;
G, if conform to then fully and differentiate for true, otherwise then differentiate for false;
After finishing described g step, can also carry out the further true and false and judge:
The bidimensional image information that right document security features such as a, the certificate with to be identified, certificate, bill form under the irradiation of the light of different-waveband compares, and picks out the strongest bidimensional image information of character to be identified background contrasts of living in it as pending bidimensional image information;
B, above-mentioned pending bidimensional image information is carried out optical character identification (OCR) handle, realize the automatic typing of computing machine of character to be identified;
C, the character of the automatic typing of aforementioned calculation machine is being retrieved in corresponding security feature database;
D, if comparing result is differentiated for true and retrieve the coupling character and then differentiate for very, if comparing result is differentiated for false and do not retrieve the coupling character, then differentiate for false, otherwise enter next step;
Final genuine/counterfeit discriminating is made in e, manual analysis.
Wherein, refer to the searching database of setting up in advance according to different right documents, for example ID (identity number) card No. searching database etc. with the corresponding security feature database of the character that is retrieved.
Claims (8)
1, the distinguishing method between true and false of right documents such as a kind of certificate, certificate, bill comprises the steps:
A, light source produce irradiates light;
B, the irradiates light that adopts a step to produce shine the security feature zone of right documents such as certificate, certificate, bill, produce imaging;
C, photoelectric sensor receive the imaging that the b step produces by the optical imagery assembly, and convert the bidimensional image information of described security feature to;
D, obtain the bidimensional image information of right document security features such as genuine certificate, certificate, bill by the c step;
E, obtain the bidimensional image information of right document security features such as certificate to be identified, certificate, bill by the c step;
F, the bidimensional image information that two steps of d, e are generated are carried out computing machine contrast or artificial contrast automatically;
G, above-mentioned comparing result is judged, then differentiated for true, otherwise then differentiate for false if conform to; Wherein, described security feature is the visible logo of human eye, seal, signature, pattern, form, character, shading, watermark, a kind of in the hologram or be no less than two kinds combination in any, described irradiates light comprises the light that is no less than two different-wavebands, described bidimensional image information is the imaging spectral information of the security feature that obtains after the rayed of different-waveband, described security feature also comprises material, and the sightless logo of human eye, seal, signature, pattern, form, character, shading, watermark, a kind of in the hologram or be no less than two kinds combination in any, it is characterized in that: after finishing described g step, carry out the further true and false in conjunction with the genuine/counterfeit discriminating method of following steps and judge:
The bidimensional image information that right document security features such as h, the certificate with to be identified, certificate, bill form under the irradiation of the light of different-waveband compares, and picks out the strongest bidimensional image information of character to be identified background contrasts of living in it as pending bidimensional image information;
I, above-mentioned pending bidimensional image information is carried out optical character identification (OCR) handle, realize the automatic typing of computing machine of character to be identified;
J, the character of the automatic typing of aforementioned calculation machine is being retrieved in corresponding security feature database;
K, make genuine/counterfeit discriminating according to the comparing result of aforementioned bidimensional image and the result for retrieval of previous step;
L, genuine/counterfeit discriminating: if comparing result is judged as true and retrieves the coupling character, then differentiate, otherwise differentiate for false for true.
2, the distinguishing method between true and false of right documents such as certificate according to claim 1, certificate, bill is characterized in that: after the described k step, replace described 1 to go on foot mule with following steps:
A, if comparing result is differentiated for true and retrieve the coupling character and then differentiate for very, if comparing result is differentiated for false and do not retrieve the coupling character, then differentiate for false, otherwise enter next step mule;
Final genuine/counterfeit discriminating is made in b, manual analysis.
3, according to the distinguishing method between true and false of right documents such as the described certificate of any one claim, certificate, bill in the claim 1 to 2, it is characterized in that: described imaging is reflected light or transmitted light.
4, the distinguishing method between true and false of right documents such as certificate according to claim 3, certificate, bill is characterized in that: any one or the combination in any that be no less than dual mode of the light of described different-waveband in the following manner obtains:
A, one group of light source of employing, each light source sends the light of different-waveband, and by connecting each light source successively, timesharing obtains the light of different-waveband;
B, adopt a light source, this light source sends the light of different-waveband simultaneously, by adopt successively can the conducting wave band light end the optical filter of the light of its all band, timesharing obtains the light of different-waveband;
C, employing one or one group of light source, this light source sends the light of different-waveband simultaneously, each photoelectric sensing unit of photoelectric sensor be furnished with respectively can conducting wave band light and by the optical filter of the light of its all band, when light source was connected, this photoelectric sensor can be simultaneously but is got access to the light of different-waveband in different locus.
5, the distinguishing method between true and false of right documents such as certificate according to claim 4, certificate, bill is characterized in that: the light of described different-waveband any one security feature to right documents such as certificate, certificate, bills in the following manner shines:
A, shine with a fixed angle;
B, shine to timesharing to be no less than two different angles;
C, while shine to be no less than two different angles.
6, the distinguishing method between true and false of right documents such as certificate according to claim 5, certificate, bill, it is characterized in that: described optical imagery assembly receives described imaging by following any one mode:
A, receive with a fixed angle;
B, receive to timesharing to be no less than two different angles;
C, while receive to be no less than two different angles.
7, the distinguishing method between true and false of right documents such as certificate according to claim 6, certificate, bill, it is characterized in that: described photoelectric sensor constitutes by following any one mode:
A, constitute by one or more single-point type photoelectric sensing assembly and two-dimentional machinery scan components;
B, constitute by the solid-state self-scanning linear array of one or more one dimension photoelectric sensing assembly and one dimension mechanical scanning assembly;
C, constitute by one or more two-dimensional solid-state self-scanning face battle array photoelectric sensing assembly.
8, the distinguishing method between true and false of right documents such as certificate according to claim 7, certificate, bill, it is characterized in that: the spectral range of the light of described different-waveband and the spectral response range of described photoelectric sensor drop on ultraviolet ray, visible light, ultrared electromagnetic wave spectrum interval.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100346104A CN100557645C (en) | 2005-05-11 | 2005-05-11 | The distinguishing method between true and false of right documents such as a kind of certificate, certificate, bill |
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| CNB2005100346104A CN100557645C (en) | 2005-05-11 | 2005-05-11 | The distinguishing method between true and false of right documents such as a kind of certificate, certificate, bill |
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| CN102236930A (en) * | 2010-04-27 | 2011-11-09 | 北京中科金财科技股份有限公司 | Method and device for digitally collecting and indentifying anti-counterfeiting material information of bill |
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| CN102236931A (en) * | 2010-04-27 | 2011-11-09 | 北京中科金财科技股份有限公司 | Method and device for digitally collecting and indentifying anti-counterfeiting spectroscopic analysis information of bill |
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