CN106530481A - Method and device for detecting abnormal transmission of paper money - Google Patents
Method and device for detecting abnormal transmission of paper money Download PDFInfo
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- CN106530481A CN106530481A CN201610945849.5A CN201610945849A CN106530481A CN 106530481 A CN106530481 A CN 106530481A CN 201610945849 A CN201610945849 A CN 201610945849A CN 106530481 A CN106530481 A CN 106530481A
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- bank note
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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
- G07D7/20—Testing patterns thereon
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D11/00—Devices accepting coins; Devices accepting, dispensing, sorting or counting valuable papers
- G07D11/20—Controlling or monitoring the operation of devices; Data handling
- G07D11/22—Means for sensing or detection
- G07D11/235—Means for sensing or detection for monitoring or indicating operating conditions; for detecting malfunctions
- G07D11/237—Means for sensing or detection for monitoring or indicating operating conditions; for detecting malfunctions for detecting transport malfunctions, e.g. jams or misfeeds
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Inspection Of Paper Currency And Valuable Securities (AREA)
Abstract
The embodiment of the invention discloses a method and device for detecting the abnormal transmission of paper money. The method comprises a step of obtaining the paper money scanning image of paper money to be detected in a transmission process, a step of determining the four corner points of the paper money scanning image, a step of forming a target quadrangle according to the connection lines of the four corner points, and a step of judging whether the transmission of the paper money to be detected is abnormal or not according to the target quadrangle formed according to the geometric characteristic of the target quadrangle. According to the embodiment of the present invention, through analyzing the geometric characteristic of the quadrangle formed by the four corner points of the paper money scanning image of the paper money to be detected in the transmission process, whether the paper money has transmission abnormality or not is judged, the paper money transmission abnormality can be accurately and timely found, and the reduction of the time needed by paper money identification is facilitated.
Description
Technical field
The present embodiments relate to paper currency detection technology, more particularly to a kind of method and dress of detection paper currency transmission exception
Put.
Background technology
With the continuous improvement of people's quality of life, the velocity of currency in circuilation is more and more faster, and financial self-service equipment is appeared as
Paper money transaction is provided a great convenience.
At present, in financial self-service equipment, common configuration has currency examination device, and currency examination device can be to the true and false of bank note and damaged feelings
Condition etc. is checked, and is that the automated transaction of bank note provides safeguard.When bank note is transmitted in currency examination device passage, can be because bank note itself
The frame for movement failure and other reasons of viscose glue, tear or machine itself and in scanning process occur interim card deflection etc. phenomenon, cause
Bank note is walked about exception, scan image number corresponding with normal bank note of walking about of walking about the corresponding scan image data of abnormal bank note
Differ greatly according to comparing, easily cause paper money recognition process tedious, cause then the output time delay of paper money recognition arithmetic result, affect paper
Real-time control in coin transmitting procedure, or even can there are the serious consequences such as card paper money not in time because of control.
The content of the invention
The embodiment of the present invention provides a kind of detection paper currency transmission abnormal method and device, to realize the transmission feelings to bank note
Whether condition there is abnormal detection.
In a first aspect, a kind of abnormal method of detection paper currency transmission is embodiments provided, including：
Obtain bank note scan image of the bank note to be detected in transmitting procedure；
Determine four angle points of the bank note scan image；
Object quadrangle is constituted according to the line of four angle points；
The bank note to be detected whether transmission abnormality is judged according to the geometrical property of the object quadrangle.
Alternatively, the geometrical property includes interior angle angular characteristicses, catercorner length characteristic and opposite side parallel relation characteristic
In one or more.
Further, to judge whether the bank note to be detected transmits different for the geometrical property according to the object quadrangle
Often include：
When any one interior angle of the object quadrangle is more than or equal to predetermined angle difference with the angle difference at right angle
During threshold value, the paper currency transmission exception to be detected is determined；Or,
When the difference of two catercorner lengths of the object quadrangle is more than or equal to preset length difference threshold, really
The fixed paper currency transmission exception to be detected；Or,
When the parallel relation of any one group of opposite side of the object quadrangle does not meet default parallel relation criterion,
Determine the paper currency transmission exception to be detected.
Further, the paper currency transmission exception to be detected is being judged according to the geometrical property of the object quadrangle
Afterwards, also include：
Stop the operation of paper money recognition algorithm.
Further, the paper currency transmission exception to be detected is being judged according to the geometrical property of the object quadrangle
Afterwards, also include：
The transmission abnormality related data of the bank note to be detected is recorded in daily record.
Second aspect, the embodiment of the present invention additionally provide a kind of abnormal device of detection paper currency transmission, and the device includes：
Image collection module, for obtaining bank note scan image of the bank note to be detected in transmitting procedure；
Angle point determining module, for determining four angle points of the bank note scan image；
Quadrangle constitutes module, for constituting object quadrangle according to the line of four angle points；
Transmission abnormality judge module, for judging that the bank note to be detected is according to the geometrical property of the object quadrangle
No transmission abnormality.
Alternatively, the geometrical property includes interior angle angular characteristicses, catercorner length characteristic and opposite side parallel relation characteristic
In one or more.
Further, the transmission abnormality judge module specifically for：
When any one interior angle of the object quadrangle is more than or equal to predetermined angle difference with the angle difference at right angle
During threshold value, the paper currency transmission exception to be detected is determined；Or,
When the difference of two catercorner lengths of the object quadrangle is more than or equal to preset length difference threshold, really
The fixed paper currency transmission exception to be detected；Or,
When the parallel relation of any one group of opposite side of the object quadrangle does not meet default parallel relation criterion,
Determine the paper currency transmission exception to be detected.
Further, also include：
Algorithm runs abort module, for judging the paper to be detected according to the geometrical property of the object quadrangle
After coin transmission abnormality, terminate the operation of paper money recognition algorithm.
Further, also include：
Data recordin module, for judging that the bank note to be detected is passed according to the geometrical property of the object quadrangle
After defeated exception, the transmission abnormality related data of the to be detected bank note is recorded in daily record
Four angle point structures of bank note scan image of the embodiment of the present invention by analysis bank note to be detected in transmitting procedure
Into quadrangle geometrical property come judge bank note with the presence or absence of transmission abnormality problem, timely and accurately can find bank note pass
Defeated exception, advantageously reduces the time needed for paper money recognition.
Description of the drawings
Fig. 1 is a kind of flow chart of the method for detection paper currency transmission exception that the embodiment of the present invention one is provided；
Fig. 2 is a kind of flow chart of the method for detection paper currency transmission exception that the embodiment of the present invention two is provided；
Fig. 3 is the bank note scan image schematic diagram in the abnormal method of detection paper currency transmission provided in an embodiment of the present invention；
Fig. 4 is a kind of flow chart of the method for detection paper currency transmission exception that the embodiment of the present invention three is provided；
Fig. 5 is a kind of flow chart of the method for detection paper currency transmission exception that the embodiment of the present invention four is provided；
Fig. 6 is a kind of flow chart of the method for detection paper currency transmission exception that the embodiment of the present invention five is provided；
Fig. 7 is a kind of schematic diagram of the device of detection paper currency transmission exception that the embodiment of the present invention six is provided.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that, in order to just
Part related to the present invention rather than entire infrastructure are illustrate only in description, accompanying drawing.
Embodiment one
A kind of flow chart of the method for detection paper currency transmission exception that Fig. 1 is provided for the embodiment of the present invention one, the present embodiment
Situation about detected to paper currency transmission extremely is applicable to, the method can be held by the abnormal device of detection paper currency transmission
OK, the device can be realized by the mode of software and/or hardware, be typically integrated in the financial self-service equipments such as cash recycling system
In.The method specifically includes following steps：
The bank note scan image of S110, acquisition bank note to be detected in transmitting procedure.
Wherein, when bank note to be detected is transmitted in the currency examination device passage of financial self-service equipment, financial self-service equipment can be passed through
In scanning device bank note to be detected is scanned, obtain bank note scan image.
S120, four angle points for determining the bank note scan image.
Wherein, scan image is analyzed, method is determined according to existing image border, obtain bank note scan image
Edge, determines four angle points of the bank note scan image according to the edge of image.
S130, according to the line of four angle points constitute object quadrangle.
Wherein, four angle points are sequentially connected, just constitute an object quadrangle, when bank note be normal bank note and
During without transmission abnormality situation, object quadrangle is rectangle, when bank note has transmission abnormality, as bank note may be in transmission channel
In there occurs torsion, tear the problems such as, with normal circumstances bank note present feature it is incomplete same, object quadrangle is just in
Reveal the shape that there are some differences with rectangle.
S140, the bank note to be detected whether transmission abnormality is judged according to the geometrical property of the object quadrangle.
Wherein, as when bank note has transmission abnormality, the object quadrangle presents and there are some differences with rectangle
Shape, then the geometrical property of object quadrangle is also different from rectangle, therefore can be according to the geometrical property of object quadrangle come right
Bank note to be detected is judged with the presence or absence of transmission abnormality, when the geometrical property of object quadrangle is showed with the geometrical property of rectangle
When different, paper currency transmission exception is can determine whether.
Alternatively, the geometrical property includes interior angle angular characteristicses, catercorner length characteristic and opposite side parallel relation characteristic
In one or more.
Wherein, when paper currency transmission is abnormal, certain interior angle can be caused not to be right angle, or two catercorner length differences,
Or opposite side it is not parallel in the case of one or more, therefore can utilize these three characteristics carry out bank note biography one or more
Defeated abnormal judgement.It is that performance priority or reliability are preferential that the selection of characteristic depends primarily on target to be reached, if
Consider performance priority, then abnormal judgement can be transmitted using any one, once noting abnormalities, then carry out problem feedback；Such as
Fruit considers that reliability is preferential, then two or three comprehensively can chosen in three kinds of characteristics is transmitted abnormal judgement, so can be with
Improve the degree of accuracy of judged result.
The technical scheme of the present embodiment, by four that analyze bank note scan image of the bank note to be detected in transmitting procedure
Angle point constitute quadrangle geometrical property come judge bank note with the presence or absence of transmission abnormality problem, reach and timely and accurately find
Paper currency transmission exception, the effect the time required to advantageously reducing paper money recognition, method are simply easily achieved.
On the basis of above-mentioned technical proposal, judged according to the geometrical property of the object quadrangle it is described to be detected
After paper currency transmission exception, also include：
Terminate the operation of paper money recognition algorithm.
Wherein, under normal circumstances, bank note can be identified using paper money recognition algorithm, for example, recognizes the thickness of bank note
Degree, size, pattern and true and false situation etc..And when bank note has transmission abnormality, if not terminating the operation of paper money recognition algorithm,
So paper money recognition algorithm can by current bank note to be detected as normal transmission bank note recognizing, cause identification process superfluous
It is long, the output time delay of algorithm recognition result.So, when judging that bank note has transmission abnormality, terminate paper money recognition algorithm in time, can be with
Reduce algorithm execution time, it is to avoid the appearance of card paper money situation.
On the basis of above-mentioned technical proposal, judged according to the geometrical property of the object quadrangle it is described to be detected
After paper currency transmission exception, also include：
The transmission abnormality related data of the bank note to be detected is recorded in daily record.
Wherein, transmission abnormality related data may include the geometrical property data of object quadrangle, such as the angle of each interior angle,
Angle of two cornerwise length differences and one group of opposite side extended line etc.；May also include the analysis number of above-mentioned geometrical property data
According to such as abnormal interior angle place orientation of angle etc..The transmission abnormality related data of the bank note to be detected is recorded in daily record
Afterwards, transmission abnormality state can be classified or abnormal cause point by analyzing the transmission abnormality related data stored in daily record
Analysis.For example, transmission abnormality state can be divided into bank note lower right corner elongation to be detected, the upper right corner are elongated and the lower left corner tears etc.
Classification, so that the above- mentioned information in the extractable daily record of maintainer is judged to the failure cause of currency examination device transmission channel, nothing
Substantial amounts of view data need to be called, is that fault test is provided convenience.Meanwhile, if there is often asking for same classification with money equipment
Topic, above- mentioned information can provide help with the presence or absence of problem to judge that such equipment is designed.Additionally, by defeated to what is stored in daily record
Abnormal related data carries out statistical analysis, is also capable of achieving to automatically analyze failure cause, improves financial self-service equipment frame for movement former
Because automatically analyzing ability during interim card.
Embodiment two
A kind of flow chart of the method for detection paper currency transmission exception that Fig. 2 is provided for the embodiment of the present invention two, the present embodiment
It is to be optimized on the basis of above-described embodiment, " will judges described to be checked according to the geometrical property of the object quadrangle
Survey bank note whether transmission abnormality " the step for further refined, the method specifically includes following steps：
The bank note scan image of S210, acquisition bank note to be detected in transmitting procedure.
S220, four angle points for determining the bank note scan image.
S230, according to the line of four angle points constitute object quadrangle.
S240, when the object quadrangle any one interior angle and right angle angle difference be more than or equal to predetermined angle
During difference threshold, the paper currency transmission exception to be detected is determined.
Wherein, predetermined angle difference threshold can be chosen based on experience value or be determined according to result of the test, for table
Acceptable angular error is levied, AS (angular standard) can be specifically designated as, for example, can be 0.7 degree.Angle in the present embodiment
Difference can be the absolute value of differential seat angle.When the interior angle of object quadrangle is less than predetermined angle difference threshold with the angle difference at right angle
During value, it is believed that be admissible angular error.And work as the interior angle of object quadrangle with the angle difference at right angle more than or equal to pre-
If during angle difference threshold value, then judging exception is occurred in that during coin is walked.Exemplarily, Fig. 3 is that the embodiment of the present invention is provided
The abnormal method of detection paper currency transmission in bank note scan image schematic diagram, in figure, 310 is bank note scan image (shadow part
Point), determining four angle points A, B, C and D of bank note scan image, four angle points are sequentially connected with composition object quadrangle ABDC, only
When the difference for having 90 degree of the angle when ∠ BAC, ∠ ABD, ∠ ACD and ∠ CDB and right angle is respectively less than predetermined angle difference threshold,
The bank note of normal transport can be considered, when the angle value and right angle at any one angle in ∠ BAC, ∠ ABD, ∠ ACD and ∠ CDB
90 degree of angle difference be more than or equal to predetermined angle difference threshold when, then can determine that the paper currency transmission exception to be detected.
From the figure 3, it may be seen that there is exception in transmitting procedure in 310 corresponding bank note of bank note scan image, so causing scan image to be compared
Scan image (rectangular image) during normal transmission there occurs torsional deformation.Further, will can be unsatisfactory in normal condition
Angle and corresponding angle difference are recorded in daily record, and easy access personnel consult, and then judge abnormal cause.
The technical scheme of the present embodiment, by four that analyze bank note scan image of the bank note to be detected in transmitting procedure
The interior angle characteristic of the quadrangle that angle point is constituted is reached to judge problem of the bank note with the presence or absence of transmission abnormality
Defeated exception, the effect the time required to efficiently reducing paper money recognition, method are simply easily achieved.
Embodiment three
A kind of flow chart of the method for detection paper currency transmission exception that Fig. 4 is provided for the embodiment of the present invention three, the present embodiment
It is to be optimized on the basis of above-described embodiment, " will judges described to be checked according to the geometrical property of the object quadrangle
Survey bank note whether transmission abnormality " the step for further refined, the method specifically includes following steps：
The bank note scan image of S410, acquisition bank note to be detected in transmitting procedure.
S420, four angle points for determining the bank note scan image.
S430, according to the line of four angle points constitute object quadrangle.
S440, when the object quadrangle two catercorner lengths difference be more than or equal to preset length difference threshold
When, determine the paper currency transmission exception to be detected.
Wherein, preset length difference threshold can rule of thumb be chosen or be determined according to result of the test, for characterizing
Acceptable length difference error, can specifically be designated as LS (length standard).The difference of two catercorner lengths in the present embodiment
Value can be the absolute value of two cornerwise length differences.When the difference of two catercorner lengths of the object quadrangle is less than
During preset length difference threshold, it is believed that be the error in allowable range, can determine whether that bank note walks coin normally, when four side of the target
When the difference of two catercorner lengths of shape is more than or equal to preset length difference threshold, then illustrate that object quadrangle is not square
Shape, it may be determined that the bank note to be detected occurs abnormal in transmitting procedure.Exemplarily, as shown in figure 3, in object quadrangle
In ABDC, two diagonal are respectively line segment AD and line segment BC, and the length of the length of line segment AD and line segment BC is subtracted each other poor, when
When the difference asked for is more than or equal to preset length difference threshold, it may be determined that the bank note to be detected occurs different in transmitting procedure
Often.
The technical scheme of the present embodiment, by four that analyze bank note scan image of the bank note to be detected in transmitting procedure
The catercorner length characteristic of the quadrangle that angle point is constituted reaches in time discovery judging problem of the bank note with the presence or absence of transmission abnormality
Paper currency transmission exception, the effect the time required to efficiently reducing paper money recognition, method are simply easily achieved.
Example IV
A kind of flow chart of the method for detection paper currency transmission exception that Fig. 5 is provided for the embodiment of the present invention four, the present embodiment
It is to be optimized on the basis of above-described embodiment, " will judges described to be checked according to the geometrical property of the object quadrangle
Survey bank note whether transmission abnormality " the step for further refined, the method specifically includes following steps：
The bank note scan image of S510, acquisition bank note to be detected in transmitting procedure.
S520, four angle points for determining the bank note scan image.
S530, according to the line of four angle points constitute object quadrangle.
S540, mark is judged when the parallel relation of any one group of opposite side of the object quadrangle does not meet default parallel relation
On time, determine the paper currency transmission exception to be detected.
Wherein, presetting parallel relation criterion is used to judge whether the opposite side of quadrangle is parallel, can specifically be designated as PS (flat
Rower is accurate).For example can be determined that the point in a line to the maximum normal distance and minimum perpendicular distance of the opposite side on the side
Whether difference meets standard (as the difference is less than predeterminable range difference), or can also judge that the angle of two opposite side extended lines is
It is no meet standard etc. (as the angle be less than preset angle angle value), said method and other be used for judge two straight lines it is whether parallel
Method can judge whether opposite side is parallel, and the present embodiment is not specifically limited.Exemplary, as shown in figure 3, on four side of target
In shape ABDC, when judging the parallel relation of AB and CD, it is possible to determine that maximum normal distance and minimum of the AB when upper point is to CD
Whether the difference of vertical range meets standard, or can also judge AB while and the angle of extended line during CD whether meet standard
Deng.When the parallel relation of any one group of opposite side of the object quadrangle does not meet default parallel relation criterion, then say
The bright object quadrangle is not rectangle, it may be determined that the paper currency transmission exception to be detected.
The technical scheme of the present embodiment, by four that analyze bank note scan image of the bank note to be detected in transmitting procedure
The opposite side parallel nature of the quadrangle that angle point is constituted is reached judging problem of the bank note with the presence or absence of transmission abnormality
Coin transmission abnormality, the effect the time required to efficiently reducing paper money recognition, method are simply easily achieved.
In actual applications, judge whether the method for transmission abnormality can be institute in above-described embodiment to the bank note to be detected
Any one in the method for offer, it is also possible to while detected using two or three therein, when only selecting a kind of, can
Preferably to ensure agility, while when being detected using two or three therein, can preferably ensure the degree of accuracy.
Embodiment five
A kind of flow chart of the method for detection paper currency transmission exception that Fig. 6 is provided for the embodiment of the present invention five, the present embodiment
It is to be optimized on the basis of above-described embodiment, the present embodiment is one on the basis of above-described embodiment preferred real
Example, detects to interior angle angular characteristicses, catercorner length characteristic and opposite side parallel relation characteristic simultaneously, specifically includes following step
Suddenly：
The bank note scan image of S601, acquisition bank note to be detected in transmitting procedure.
S602, four angle points A, B, C and D determining the bank note scan image.
S603, according to the line of four angle points constitute object quadrangle ABDC.
Whether S604, judgement | 90 ° of-∠ BAC | if so, perform S605 less than predetermined angle difference threshold；Otherwise perform
S611。
Whether S605, judgement | 90 ° of-∠ ABD | if so, perform S606 less than predetermined angle difference threshold；Otherwise perform
S611。
Whether S606, judgement | 90 ° of-∠ ACD | if so, perform S607 less than predetermined angle difference threshold；Otherwise perform
S611。
Whether S607, judgement | 90 ° of-∠ CDB | if so, perform S608 less than predetermined angle difference threshold；Otherwise perform
S611。
S608, judge that two cornerwise length differences, whether less than preset length difference threshold, if so, perform S609；It is no
S611 is performed then.
S609, judge whether the parallel relation of AB and CD meets default parallel relation criterion, if so, perform S610；
S611 is performed otherwise.
S610, judge whether the parallel relation of AD and BC meets default parallel relation criterion, if so, perform S612；
S611 is performed otherwise.
S611, determine the paper currency transmission exception to be detected.
S612, determine that the paper currency transmission to be detected is normal.
Wherein, when interior angle angular characteristicses, catercorner length characteristic and opposite side parallel relation characteristic all meet standard, side
Can determine that the paper currency transmission to be detected is normal.
The technical scheme of the present embodiment, by bank note scan image of the comprehensive analysis bank note to be detected in transmitting procedure
The interior angle angular characteristicses of the quadrangle that four angle points are constituted, catercorner length characteristic and opposite side parallel relation characteristic are judging bank note
With the presence or absence of the problem of transmission abnormality, reach, the time required to efficiently reducing paper money recognition
Effect, method are simply easily achieved.
Embodiment six
Fig. 7 is a kind of schematic diagram of the abnormal device of detection paper currency transmission that the embodiment of the present invention six is provided, and the device has
Body includes：
Image collection module 710, for obtaining bank note scan image of the bank note to be detected in transmitting procedure；
Angle point determining module 720, for determining four angle points of the bank note scan image；
Quadrangle constitutes module 730, for constituting object quadrangle according to the line of four angle points；
Transmission abnormality judge module 740, for judging the paper to be detected according to the geometrical property of the object quadrangle
Coin whether transmission abnormality.
Alternatively, the geometrical property includes interior angle angular characteristicses, catercorner length characteristic and opposite side parallel relation characteristic
In one or more.
Further, the transmission abnormality judge module concrete 740 is used for：
When any one interior angle of the object quadrangle is more than or equal to predetermined angle difference with the angle difference at right angle
During threshold value, the paper currency transmission exception to be detected is determined；Or,
When the difference of two catercorner lengths of the object quadrangle is more than or equal to preset length difference threshold, really
The fixed paper currency transmission exception to be detected；Or,
When the parallel relation of any one group of opposite side of the object quadrangle does not meet default parallel relation criterion,
Determine the paper currency transmission exception to be detected.
Further, also include：
Algorithm runs abort module, for judging the paper to be detected according to the geometrical property of the object quadrangle
After coin transmission abnormality, terminate the operation of paper money recognition algorithm.
Further, also include：
Data recordin module, for judging that the bank note to be detected is passed according to the geometrical property of the object quadrangle
After defeated exception, the transmission abnormality related data of the to be detected bank note is recorded in daily record.
The abnormal device of detection paper currency transmission provided in an embodiment of the present invention can perform any embodiment of the present invention and be provided
The abnormal method of detection paper currency transmission, possess the corresponding functional module of execution method and beneficial effect.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although the present invention is carried out by above example
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
More other Equivalent embodiments can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (10)
1. a kind of abnormal method of detection paper currency transmission, it is characterised in that include：
Obtain bank note scan image of the bank note to be detected in transmitting procedure；
Determine four angle points of the bank note scan image；
Object quadrangle is constituted according to the line of four angle points；
The bank note to be detected whether transmission abnormality is judged according to the geometrical property of the object quadrangle.
2. method according to claim 1, it is characterised in that the geometrical property includes interior angle angular characteristicses, diagonal
One or more in length characteristic and opposite side parallel relation characteristic.
3. method according to claim 2, it is characterised in that described to be judged according to the geometrical property of the object quadrangle
Whether transmission abnormality includes the bank note to be detected：
When any one interior angle of the object quadrangle is more than or equal to predetermined angle difference threshold with the angle difference at right angle
When, determine the paper currency transmission exception to be detected；Or,
When the difference of two catercorner lengths of the object quadrangle is more than or equal to preset length difference threshold, institute is determined
State paper currency transmission exception to be detected；Or,
When the parallel relation of any one group of opposite side of the object quadrangle does not meet default parallel relation criterion, it is determined that
The paper currency transmission exception to be detected.
4. according to the arbitrary described method of claim 1-3, it is characterised in that in the geometrical property according to the object quadrangle
After judging the paper currency transmission exception to be detected, also include：
Stop the operation of paper money recognition algorithm.
5. the either method according to claim 1-3, it is characterised in that in the geometrical property according to the object quadrangle
After judging the paper currency transmission exception to be detected, also include：
The transmission abnormality related data of the bank note to be detected is recorded in daily record.
6. the abnormal device of a kind of detection paper currency transmission, it is characterised in that include：
Image collection module, for obtaining bank note scan image of the bank note to be detected in transmitting procedure；
Angle point determining module, for determining four angle points of the bank note scan image；
Quadrangle constitutes module, for constituting object quadrangle according to the line of four angle points；
Transmission abnormality judge module, for judging whether the bank note to be detected passes according to the geometrical property of the object quadrangle
Defeated exception.
7. device according to claim 6, it is characterised in that the geometrical property includes interior angle angular characteristicses, diagonal
One or more in length characteristic and opposite side parallel relation characteristic.
8. device according to claim 7, it is characterised in that the transmission abnormality judge module specifically for：
When any one interior angle of the object quadrangle is more than or equal to predetermined angle difference threshold with the angle difference at right angle
When, determine the paper currency transmission exception to be detected；Or,
When the difference of two catercorner lengths of the object quadrangle is more than or equal to preset length difference threshold, institute is determined
State paper currency transmission exception to be detected；Or,
When the parallel relation of any one group of opposite side of the object quadrangle does not meet default parallel relation criterion, it is determined that
The paper currency transmission exception to be detected.
9. according to the arbitrary described device of claim 6-8, it is characterised in that also include：
Algorithm runs abort module, for judging that the bank note to be detected is passed according to the geometrical property of the object quadrangle
After defeated exception, terminate the operation of paper money recognition algorithm.
10. according to the arbitrary described device of claim 6-8, it is characterised in that also include：
Data recordin module, for judging that the paper currency transmission to be detected is different according to the geometrical property of the object quadrangle
After often, the transmission abnormality related data of the bank note to be detected is recorded in daily record.
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| CN201610945849.5A CN106530481A (en) | 2016-11-02 | 2016-11-02 | Method and device for detecting abnormal transmission of paper money |
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| CN201610945849.5A CN106530481A (en) | 2016-11-02 | 2016-11-02 | Method and device for detecting abnormal transmission of paper money |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107393139A (en) * | 2017-08-31 | 2017-11-24 | 深圳怡化电脑股份有限公司 | A kind of currency checking module detection device |
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| CN111524134A (en) * | 2020-05-09 | 2020-08-11 | 中南大学 | Method and device for detecting regularity of honeycomb products on production line |
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| CN111524133B (en) * | 2020-05-09 | 2023-05-19 | 中南大学 | Window statistical vertex extraction method and system for honeycomb regularity detection |
| CN111583242B (en) * | 2020-05-09 | 2023-05-23 | 中南大学 | Morphological vertex extraction method and detection device for honeycomb regularity detection |
| CN111583234B (en) * | 2020-05-09 | 2023-05-23 | 中南大学 | Geometric form evaluation method, detection and evaluation system for honeycomb products |
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