CN101976475A - Paper money identification method and device - Google Patents
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- CN101976475A CN101976475A CN2010102000718A CN201010200071A CN101976475A CN 101976475 A CN101976475 A CN 101976475A CN 2010102000718 A CN2010102000718 A CN 2010102000718A CN 201010200071 A CN201010200071 A CN 201010200071A CN 101976475 A CN101976475 A CN 101976475A
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/004—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using digital security elements, e.g. information coded on a magnetic thread or strip
- G07D7/0047—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using digital security elements, e.g. information coded on a magnetic thread or strip using checkcodes, e.g. coded numbers derived from serial number and denomination
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Abstract
The invention discloses a paper money identification method, which comprises: extracting the number of paper money to be detected; searching a preset counterfeit money number database; and if the database contains a number which is the same as the extracted number of the paper money, determining the paper money to be detected as suspected paper money. The invention also provides a paper money identification device, which comprises a number extraction module for extracting the number of the paper money to be detected; an identification module for searching the preset counterfeit money number database, judging if the number of the paper money to be detected is a counterfeit money number and determining the paper money to be detected is the suspected paper money if the database contains the number which is the same as the extracted number of the paper money. When the method and the device are used, the identification effectiveness and stability of a large amount of actual non-first detection can be realized easily, and thus, the counterfeit money identification level of the entire system is improved considerably and the stability and robustness of the identification of true paper money are not affected.
Description
Technical field
The present invention relates to information and image technique field, be specifically related to the paper money recognition method and apparatus.
Background technology
Cash bills is the special media of universal equivalent circulation instead, and the production technique of its anti-forgery feature point is represented the highest level of anti-counterfeiting technology.Usually the anti-counterfeiting technology that adopts in the banknote comprises: multiple modes such as color shifting ink, stealthy printing, watermark, safety line, magnetic number, infrared signature, extraordinary bank-note paper, correspondingly, at different banknote anti-counterfeiting technologies, multiple modes such as the employing color shifting ink detects, stealthy printing detection, watermark detection, safety line detection, the detection of magnetic number, infrared signature detection, banknote note detection are finished the detection to specific anti-forgery feature point on the banknote.In order to reach higher detection level, and, adopt the organic assembling of multiple detection mode usually, solve the problem of the various banknote false distinguishings that run in the reality in order to tackle the false making molecule to the wherein breakthrough of a few anti-counterfeiting technologies.
Yet because the development of technical merit, the false making molecule also can be grasped the manufacture craft of corresponding banknote anti-counterfeiting technology gradually, even the false making molecule is at concrete facility, and the combination that research breaks through various anti-counterfeiting technologies also becomes possibility.(pointer adopts national currency and clips and pastes, mends by replacing a damaged part, takes off layer, alter, be shifted, reprint etc. method processing is handled as the currency of counterfeiting currency and alter will to tackle on the one hand the counterfeit money of mixing the spurious with the genuine, make national currency change form) differentiate, also to guarantee false distinguishing means and technology on the other hand, false drop rate level to genuine notes is low as much as possible, because a large amount of daily process object of facing of currency counting and detecting machine tool or genuine notes.This just makes the false distinguishing industry when system design, to the loss level of counterfeit money with to the misclassification rate level of genuine notes balance in addition.
In the existing currency counting and detecting machine tool, when paper money is walked in system start-up, banknote is successively by each detection module, wherein several arbitrarily as the detection of magnetic number, safety line detection, stealthy printing detection, watermark detection, infrared signature detection etc., the anti-counterfeiting characteristic of this module that each module basis is extracted is judged the true and false of banknote, is finally comprehensively provided the true and false situation of this banknote by the judged result of each module.Each module is the parallel detection of finishing independently specific anti-forgery feature point on the banknote.
In addition, also proposed the various patent solutions of banknote sequence number in the industry, finished identification unique identity ID-banknote sequence number on the banknote.
Need to prove, the application of its banknote sequence number mainly is some current demand at bank in traditional number identification system, sequence number under the particular case is finished the query function of relevant information, mainly be under the normal condition, the sequence number organize content of genuine notes, such as ATM deposits the correspondence filing of number and storage people identity in, its limitation is terminal device, and there is a serious shortage in the supply (even on ATM and cleaning-sorting machine, be equipped with the sequence number identification module also seldom, unique especially on the paper money counter) and the unmanageable problem that causes owing to the huge sample size of genuine notes.
Existing banknote false distinguishing system, its performance directly depends on the performance of individual module or the stack of a plurality of module performances.For instance, the highest anti-forgery feature point of anti-counterfeiting power that color shifting ink is in the banknote to be adopted, and the magnetic detection lower anti-forgery feature point that is anti-counterfeiting power adopts its false distinguishing effect of system of color shifting ink detection scheme will be better than the system that adopts the magnetic ink detection scheme far away so.In addition, the overlapping system performance of a plurality of detection modules is better than the performance of single detection module system.But, the detection scheme that anti-counterfeiting power is high more, its system design and complexity are high more, and the stability that genuine notes are detected and the requirement of robustness are just high more.No matter adopt the single detection module or the stack of a plurality of modules, all must consider detectability and the robustness of genuine notes detection and the balance between the stability of counterfeit money.Can not pursue high performance detection simply and ignore robustness and the stability that detects for a large amount of genuine notes.
In the process of concrete banknote false distinguishing, detect the counterfeit money type of (and the counterfeit money of same kind was not detected by detector) for the first time for detector, must rely on the banknote false distinguishing system and the technology of existing system design, promptly the scheme by the single of banknote anti-counterfeiting detection technology or combination detects; And detecting non-the counterfeit money of (and the counterfeit money of same kind was once detected by detector) for the first time for detector, the scheme of existing system design makes such problem still handle according to the counterfeit money that detects (and the counterfeit money of same kind was not detected by detector) for the first time.Not only repetition and waste detectability, and because genuine notes have wearing and tearing depreciation in various degree in circulation, make respective detection point feature weaken, weakened the difference with counterfeit money, owing to take the limited ability that stability that genuine notes detect and robustness make that to a great extent the counterfeit money that detects (and the counterfeit money of same kind was not detected by detector) for the first time is detected into account.
Summary of the invention
In view of this, technical matters to be solved by this invention provides a kind of paper money recognition method and apparatus, can identify counterfeit money rapidly and accurately.
A kind of paper money recognition method provided by the invention comprises:
Extract the number of bank note to be detected;
The counterfeit money number database that inquiry sets in advance if there be the number identical with the number of paper money that is extracted in the described database, judges that then described bank note to be detected is for doubting coin.
Before the described counterfeit money number database of inquiry, load or upgrade the step of described counterfeit money number database.
Ground preferably also comprises:
One of at least described bank note to be detected is detected in the following manner, with the true and false of further identification bank note:
Color shifting ink detects, stealthy detection, watermark detection, safety line detection, magnetic detection, the infrared or ultraviolet feature detection of printing.
A kind of paper money identifier provided by the invention comprises:
The number extraction module is used to extract the number of bank note to be detected;
Identification module is used to inquire about the counterfeit money number database that sets in advance, and judges whether the number of bank note to be detected is the counterfeit money number;
If there be the number identical with the number of paper money that is extracted in the described database, then described identification module judges that described bank note to be detected is for doubting coin.
Ground preferably, this paper money identifier also comprises:
Load-on module is used for loading or upgrading described counterfeit money number database;
Ground preferably, this paper money identifier one of also comprises in the following detection module at least:
The color shifting ink detection module is used to detect the color shifting ink of described bank note, true and false with identification bank note;
Stealthy printing detection module is used to detect the stealthy typographic(al) mark of described bank note, to discern the true and false of bank note;
Watermark detection module is used to detect the watermark of described bank note, to discern the true and false of bank note;
The safety line detection module is used to detect the safety line of described bank note, true and false with identification bank note;
The magnetic detection module is used to detect the magnetic characteristic of described bank note, true and false with identification bank note;
Infrared or ultraviolet feature detection module is used to detect the infrared of described bank note or ultraviolet feature, true and false with identification bank note.
Ground preferably, this paper money identifier also comprises:
Communication module is used to receive new counterfeit money number and offers described update module.
Ground preferably, this paper money identifier also comprises:
Comprehensive judge module is used for judging according to the result of described identification module and described detection module the true and false of bank note to be detected.
In the counterfeit money recognition technology scheme provided by the invention, introduce counterfeit money serial number data storehouse dynamic load and searching system, solve a large amount of discriminating validity, stability of detecting the counterfeit money of (and the counterfeit money of same kind was once detected by detector) the non-first time that exist in the reality easily, thereby greatly improved the counterfeit money identification level of total system, and can not influence the stability and the robustness of genuine notes identification at all.System performance promotes one and even several magnitude significantly, and system cost does not significantly increase.
Figure of description
Fig. 1 is the paper money recognition method flow diagram that the embodiment of the invention provides;
Fig. 2 is the paper money identifier synoptic diagram that the embodiment of the invention provides.
Embodiment
Usually, the selection and the layout of the banknote paper substrate of various countries, pattern or even false proof point, all be variant, but the banknote of any country all have its unique identity ID-banknote sequence number (perhaps being called banknote number, banknote identification number etc.) at the beginning of design.The figure place of this sequence number and coding rule all are discrepant, and hold in close confidence for country.The sequence number of any two genuine notes of the field of circulation all is not the same.Repeat print and obtain and the sequence number of counterfeit money prints at random or copy part genuine notes sequence number, and with batch counterfeit money have same sequence number substantially.Therefore, in theory, print sequence number, can distinguish the true and false of a banknote according to banknote.Yet, because genuine notes circulation huge, and the disappearance of termination number acquisition process ability, by the genuine notes database, reach the purpose of differentiating counterfeit money, present, also do not possess operability.But, according to the counterfeit money sequence number that obtains, dynamically loading and retrieve counterfeit money serial number data storehouse, the whole banknote false distinguishing of reconstruct system can realize having operability.
In existing banknote false distinguishing system, increase number extraction, identification, storage system and counterfeit money serial number data storehouse dynamic load and searching system in the frame of broken lines, be used to discern the counterfeit money feature that detects (and the counterfeit money of same kind was once detected by detector) the non-first time.In addition, by increasing comprehensive decision system, counterfeit money feature that detects (and the counterfeit money of same kind was not detected by detector) for the first time and the counterfeit money feature that detects (and the counterfeit money of same kind was once detected by detector) the non-first time are comprehensively judged, finished the final identification function of system.
A kind of counterfeit money recognition methods that the embodiment of the invention provides is exactly the number by identification bank note, and number of paper money to be detected is retrieved and differentiated, in conjunction with existing counterfeit money checking means counterfeit money is differentiated fast and accurately simultaneously.
For making principle of the present invention, characteristic and advantage clearer, be described below in conjunction with specific embodiment.
With reference to Fig. 1, a kind of counterfeit money recognition methods that the embodiment of the invention provides comprises the steps:
S01 loads or renewal counterfeit money number database;
Whether after the system start-up, at first detecting local counterfeit money serial number data library information has renewal, if do not upgrade, then loads local original counterfeit money serial number data storehouse; If counterfeit money serial number data library information upgrades to some extent, then load the counterfeit money serial number data storehouse after upgrading.
S02 extracts the number of bank note to be detected;
Layout position predetermined position on the bank note transfer passage according to number of paper money is provided with the number harvester; This method comprises:
When bank note to be checked arrives the precalculated position, gather the number area image of described bank note; The zone that described number zone may occur for number;
Detect the number area image of being gathered, judge in the described number area image whether comprise number of paper money; If comprise number of paper money, then from the described image that comprises number of paper money, extract described number.
Extracting the implementation of number of paper money, can be the technical scheme of describing in 201010104234.2 the patented claim of obtaining the banknote sequence number referring to application number specifically.
S03, inquiry counterfeit money number database sees wherein whether there be the number identical with the number of paper money that is extracted;
If there be the number identical in the described database, judge that then described bank note to be detected is for doubting coin with the number of paper money that is extracted.
S04 adopts existing bank note detection means that bank note is differentiated;
Particularly, one of at least described bank note to be detected is detected in the following manner, with the true and false of further identification bank note:
Color shifting ink detects, stealthy detection, watermark detection, safety line detection, magnetic detection, the infrared or ultraviolet feature detection of printing.
S05 comprehensively judges the true and false of bank note.
Can with the judged result among the step S04 in conjunction with before by the judgement that make of identification number of paper money, like this, the true and false of identification note rapidly and accurately.
Need to prove, in step S01, the loading and the renewal in counterfeit money serial number data storehouse, its requirement to real-time has different levels, so can design the update strategy of different real-times according to actual demand, satisfies the actual demand of differentiation.
Particularly,, can utilize cable network or 2G/3G mobile internet, even place with good conditionsi can utilize wireless wifi network, finish counterfeit money serial number data storehouse and load and upgrade for the environment that real-time is had relatively high expectations;
For the less demanding environment of real-time, adopt the mode of serial ports upgrading or USB flash disk upgrading in the time of can utilizing terminal machine daily servicing, finish the loading and the renewal in counterfeit money serial number data storehouse.
In view of the importance in counterfeit money serial number data storehouse, when loading/renewal, need take encryption measures personalized, high security to data.
Renewal for counterfeit money serial number data storehouse, can fully use for reference existing all facilities and ability, no matter be counting facility, large-scale facility or even finally think the counterfeit money recognition result of judging, can unify to conclude in the database of counterfeit money sequence number by the expert.And in the note circulation process of reality, the counterfeit money information that any link is found is aggregated in the unified counterfeit money serial number data storehouse after all should confirming.
With reference to Fig. 2, the embodiment of the invention also provides a kind of paper money identifier 200, comprising:
Load-on module 210 is used for loading or upgrading described counterfeit money number database;
If there be the number identical with the number of paper money that is extracted in the described database, then described identification module judges that described bank note to be detected is for doubting coin.
Color shifting ink detection module 240a is used to detect the color shifting ink of described bank note, true and false with identification bank note;
Stealthy printing detection module 240b is used to detect the stealthy typographic(al) mark of described bank note, to discern the true and false of bank note;
Safety line detection module 240d is used to detect the safety line of described bank note, true and false with identification bank note;
Infrared or ultraviolet feature detection module 240f is used to detect the infrared of described bank note or ultraviolet feature, true and false with identification bank note.
Paper money identifier also comprises:
In the counterfeit money recognition technology scheme that the embodiment of the invention provides, (storage problem is stored and managed to banknote sequence number and recognition result, under the situation that does not adopt any compression means, 10 bit sequence number of a banknote of Renminbi need the memory capacity of 10 Byte, the memory capacity of 1MByte of converting can be stored about 100,000 banknote sequence numbers, and carrying cost is lower).Like this, for the second time or even under the situation about need use for the N time, the dynamic load and the index in counterfeit money serial number data storehouse can be only passed through, the discriminating of bank note can be finished in similar problem.
In addition, for the stained fuzzy situation of paper money sequence number part, can count sequence number to the remaining bit that can discern and mate, can reach very high identification level equally, the sequence number uniqueness does not have too big variation.
According to estimates, in the actual environment, the counterfeit money proportion that detects for the first time (and the counterfeit money of same kind was not detected by detector) connects 10% less than (unusual Bao Shou numeral, real data may be far smaller than 10%), mostly be the counterfeit money that detects (and the counterfeit money of same kind was once detected by detector) the non-first time greatly.By such system design, problem that can disposable solution 90%, the problem for remaining 10% solves by the corresponding techniques means again.Estimate according to this ratio, even can not accomplish 100% solution to the counterfeit money feature that detects (and the counterfeit money of same kind was not detected by detector) for the first time, only solved 50%, actual detected rate under the correspondingly new system architecture should be 90%x100%+10%x50%=95%, contrast and the discrimination that originally all problems all was grouped in the counterfeit money feature that detects for the first time (and the counterfeit money of same kind was not detected by detector) 50% are undoubtedly huge lifting! Even, solved 90% (far below present technology real standard) if detect the counterfeit money feature of (and the counterfeit money of same kind was not detected by detector) for the first time, then the discrimination of system is 90%x100%+10%x90%=99% under this system architecture, and traditional mode is 90%, and system optimization is near an order of magnitude!
Now, detect the solution possibility of the counterfeit money recall rate 100% of (and the counterfeit money of same kind was once detected by detector) for the non-first time and do an explanation, because the discrimination of number can not reach 100%.Misclassification rate to the Renminbi number among the new national standard GB16999-200X is defined as follows: have an item sign indicating number that mistake takes place in the Renminbi sequence number 10 item sign indicating numbers and know, promptly regard mistake as and know once.Same algorithm and hardware, if two item sign indicating numbers are made mistakes simultaneously and regarded mistake as and know, discrimination promptly approximately promotes square progression, estimates according to conservative permillage, two probabilities of makeing mistakes simultaneously are 1,000,000/, infinitely near 100%.Even and consider the serious forgiveness of two item sign indicating numbers, also be very little to the influence of banknote sequence number uniqueness.
Below an explanation is done in the identification of the adulterium currency in the counterfeit money.The false making molecule adopts the false connecting method of the true part of part, makes the adulterium currency, and the false proof point that causes facility to detect just in time is that the genuine notes part causes the problem that can't effectively detect, and is a difficult problem that is difficult to overcome of existing detector always.But,, can not cause puzzlement to the counterfeit money Database Systems no matter banknote sequence number splicing part is genuine note or counterfeit money.Because in case the number of a genuine note is used as the adulterium currency, this genuine note number management of entering the counterfeit money database naturally so, another genuine note that same number can not occur influences the counterfeit money database dynamic to be managed.
The management in counterfeit money serial number data storehouse is dynamic, even the fraud molecule can be known the database information of counterfeit money management, for faking, do not have any help, because the number of just avoiding existing counterfeit money storehouse that they can do, select the number of new number or copy genuine notes, so just increased the sample size that detector detects the counterfeit money of (and the counterfeit money of same kind was not detected by detector) for the first time, very little to the influence of entire system performance.The most important thing is that for the solution that detects the counterfeit money of (and the counterfeit money of same kind was once detected by detector) the non-first time, the source in its counterfeit money serial number data storehouse no longer is limited to a certain or a certain concrete currency examine machine.But the testing result of the machine of the various performances in all financial machine and tool industries, in the banking system, or even the result who detects by expertise at last, can bring the counterfeit money that is used to detect the non-detection first time (and the counterfeit money of same kind was once detected by detector) in the counterfeit money serial number data storehouse into.
In the counterfeit money recognition technology scheme provided by the invention, introduce counterfeit money serial number data storehouse dynamic load and searching system, solve a large amount of discriminating validity, stability of detecting the counterfeit money of (and the counterfeit money of same kind was once detected by detector) the non-first time that exist in the reality easily, thereby greatly improved the counterfeit money identification level of total system, and can not influence the stability and the robustness of genuine notes identification at all.System performance promotes one and even several magnitude significantly, and system cost does not significantly increase.
According to described disclosed embodiment, can be so that those skilled in the art can realize or use the present invention.To those skilled in the art, the various modifications of these embodiment are conspicuous, and the general principles of definition here also can be applied to other embodiment on the basis that does not depart from the scope of the present invention with purport.Above-described embodiment only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a paper money recognition method is characterized in that, comprising:
Extract the number of bank note to be detected;
The counterfeit money number database that inquiry sets in advance if there be the number identical with the number of paper money that is extracted in the described database, judges that then described bank note to be detected is for doubting coin.
2. paper money recognition method as claimed in claim 1 is characterized in that, also comprises:
Before the described counterfeit money number database of inquiry, load or upgrade the step of described counterfeit money number database.
3. paper money recognition method as claimed in claim 1 is characterized in that, also comprises:
One of at least described bank note to be detected is detected in the following manner, with the true and false of further identification bank note:
Color shifting ink detects, stealthy detection, watermark detection, safety line detection, magnetic detection, the infrared or ultraviolet feature detection of printing.
4. paper money recognition method as claimed in claim 1 is characterized in that, the number of described extraction bank note to be detected specifically comprises:
When bank note to be checked arrives the precalculated position, gather the number area image of described bank note; The zone that described number zone may occur for number;
Detect the number area image of being gathered, judge in the described number area image whether comprise number of paper money; If comprise number of paper money, then from the described image that comprises number of paper money, extract described number.
5. paper money recognition method as claimed in claim 2 is characterized in that, described renewal counterfeit money number database comprises one of following mode:
Send new counterfeit money number to described counterfeit money number database by wireless communication link, described wireless communication link comprises mobile communication link or WLAN (wireless local area network) link;
Adopt serial ports or USB flash disk that new counterfeit money number is loaded into described counterfeit money number database, finish renewal.
6. a paper money identifier is characterized in that, comprising:
The number extraction module is used to extract the number of bank note to be detected;
Identification module is used to inquire about the counterfeit money number database that sets in advance, and judges whether the number of bank note to be detected is the counterfeit money number;
If there be the number identical with the number of paper money that is extracted in the described database, then described identification module judges that described bank note to be detected is for doubting coin.
7. paper money identifier as claimed in claim 6 is characterized in that, also comprises:
Load-on module is used for loading or upgrading described counterfeit money number database;
8. as claim 6 or 7 described paper money identifiers, it is characterized in that, one of also comprise in the following detection module at least:
The color shifting ink detection module is used to detect the color shifting ink of described bank note, true and false with identification bank note;
Stealthy printing detection module is used to detect the stealthy typographic(al) mark of described bank note, to discern the true and false of bank note;
Watermark detection module is used to detect the watermark of described bank note, to discern the true and false of bank note;
The safety line detection module is used to detect the safety line of described bank note, true and false with identification bank note;
The magnetic detection module is used to detect the magnetic characteristic of described bank note, true and false with identification bank note;
Infrared or ultraviolet feature detection module is used to detect the infrared of described bank note or ultraviolet feature, true and false with identification bank note.
9. as claim 6 or 7 described paper money identifiers, it is characterized in that, also comprise:
Communication module is used to receive new counterfeit money number and offers described update module.
10. paper money identifier as claimed in claim 8 is characterized in that, also comprises:
Comprehensive judge module is used for judging according to the result of described identification module and described detection module the true and false of bank note to be detected.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102000718A CN101976475A (en) | 2010-06-08 | 2010-06-08 | Paper money identification method and device |
| PCT/CN2010/079381 WO2011153798A1 (en) | 2010-06-08 | 2010-12-02 | Identifying method and device for financial bill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102000718A CN101976475A (en) | 2010-06-08 | 2010-06-08 | Paper money identification method and device |
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| Publication Number | Publication Date |
|---|---|
| CN101976475A true CN101976475A (en) | 2011-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102000718A Pending CN101976475A (en) | 2010-06-08 | 2010-06-08 | Paper money identification method and device |
Country Status (2)
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| CN (1) | CN101976475A (en) |
| WO (1) | WO2011153798A1 (en) |
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