CN105160756A - Paper money facing direction recognition method and device - Google Patents
Paper money facing direction recognition method and device Download PDFInfo
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- CN105160756A CN105160756A CN201510506972.2A CN201510506972A CN105160756A CN 105160756 A CN105160756 A CN 105160756A CN 201510506972 A CN201510506972 A CN 201510506972A CN 105160756 A CN105160756 A CN 105160756A
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Abstract
The invention discloses a paper money facing direction recognition method and device. The paper money facing direction recognition method includes the following steps that: the magnetic data of paper money are acquired, a safety line magnetic region and a serial number magnetic region are respectively positioned according to the magnetic data; whether the facing direction of paper money belongs to first type facing directions where a safety line is located at the right side or second type facing directions where the safety line is located at the left side is judged according to the safety line magnetic region, wherein the first type facing directions include the forward direction of a front surface and the reverse direction of a back surface, and the second type facing directions include the reverse direction of the front surface and the forward direction of the back surface; if the facing direction of the paper money belongs to the first type facing directions, it can be recognized that the facing direction of the paper money is the forward direction of the front surface or the reverse direction of the back surface according to the serial number magnetic region; and if the facing direction of the paper money belongs to the second type facing directions, it can be recognized that the facing direction of the paper money is the reverse direction of the front surface or the forward direction of the back surface according to the serial number magnetic region. According to the paper money facing direction recognition method and device of the invention, the facing direction of the paper money can be judged preliminarily according to the safety line magnetic region, and the facing direction of the paper money can be determined according to the serial number magnetic region, and therefore, the currency of paper money recognition can be increased.
Description
Technical field
The present invention relates to paper money recognition field, particularly relate to a kind of bank note towards recognition methods and device.
Background technology
When identifying banknote Information, usually adopt view data to identify the Information obtaining banknote, the method depends on the consistance of the monochrome information of image, when data are partially bright or partially secretly, easily causes towards identification error.
Because the crown word number region of Renminbi, Great Hall of the People area of the pattern and bonding jumper region use the printing of magnetic anti-counterfeit technologic material, the region not having magnetic signal under magnetic sensor is background area, and the magnetic data of the signal that is magnetic then differs larger with the magnetic data value of background area.Magnetic stripe signal is that whole magnetic stripe all has magnetic signal, and magnetic signal accounts for whole passage; Crown word number because the height occupied at banknote is different with width, can well distinguish the area of magnetic stripe signal, crown word number regional signal, Great Hall of the People magnetic signal with the Great Hall of the People, according to they can to judge in the position of banknote banknote towards.
Summary of the invention
The invention provides a kind of bank note towards recognition methods and device, the method and device can accurately identify bank note towards.
For realizing above-mentioned design, the present invention by the following technical solutions:
Adopt a kind of bank note towards recognition methods on the one hand, comprising:
Obtain the magnetic data of bank note, according to described magnetic data positioning security line magnetic regions, crown word number magnetic regions respectively;
According to described safety line magnetic region decision bank note towards be safety line be positioned at right side the first kind towards or safety line be positioned at left side Equations of The Second Kind towards, the described first kind is reverse towards comprising front forward and reverse side, and described Equations of The Second Kind is towards comprising front oppositely and reverse side forward;
If bank note towards be the first kind towards, according to described crown word number magnetic regions identify described bank note towards for front forward or reverse side reverse;
If bank note towards be Equations of The Second Kind towards, according to described crown word number magnetic regions identify described bank note towards for front oppositely or reverse side forward.
Wherein, after the magnetic data of described acquisition bank note, also comprise: according to described magnetic data positioning image magnetic regions;
If described bank note towards be the first kind towards, according to described crown word number magnetic regions identify described bank note towards for front forward or reverse side oppositely after, also comprise:
According to described image magnetic regions identify described bank note towards for front forward or reverse side reverse; Judge that whether the result of described image magnetic regions identification is identical with the result of described crown word number image-region identification, if so, this identifies correct, otherwise, this identification error;
If bank note towards be Equations of The Second Kind towards, according to described crown word number magnetic regions identify described bank note towards for front is oppositely or after reverse side forward, also comprise:
According to described image magnetic regions identify described bank note towards for front oppositely or reverse side forward; Judge that whether the result of described image magnetic regions identification is identical with the result of described crown word number image-region identification, if so, this identifies correct, otherwise, this identification error.
Wherein, described magnetic data is divided into 18 passages, for safety line magnetic region is positioned at 10-12 passage on the right side of described safety line is positioned at, for safety line magnetic region is positioned at 7-9 passage on the left of described safety line is positioned at.
Wherein, described magnetic data is divided into 138 row;
If bank note towards be the first kind towards, according to described crown word number magnetic regions identify described bank note towards for front forward or reverse side reverse, comprising:
If bank note towards be the first kind towards, described crown word number magnetic regions is capable at 12-16 passage 65-95, identify described bank note towards being front forward; If bank note towards being the first kind towards, described crown word number magnetic regions at 12-16 path 10-40 row, identify described bank note towards for reverse side reverse;
If bank note towards be Equations of The Second Kind towards, according to described crown word number magnetic regions identify described bank note towards for front oppositely or reverse side forward, comprising:
If bank note towards being Equations of The Second Kind towards, described crown word number magnetic regions at 2-6 path 10-40 row, identify described bank note towards for front reverse; If bank note towards be Equations of The Second Kind towards, described crown word number magnetic regions is capable at 2-6 passage 65-95, identify described bank note towards reverse side forward.
Wherein, described according to described image magnetic regions identify described bank note towards for front forward or reverse side reverse, comprising:
If bank note towards be the first kind towards, described image magnetic regions is that 5-9 passage 55-95 is capable, identify described bank note towards being front forward; If bank note towards be the first kind towards, described image magnetic regions is that 5-9 passage 40-80 is capable, identify described bank note towards for reverse side reverse;
Described according to described image magnetic regions identify described bank note towards for front oppositely or reverse side forward, comprising:
If bank note towards be Equations of The Second Kind towards, described image magnetic regions is that 11-14 passage 40-80 is capable, identify described bank note towards for front reverse; If bank note towards be Equations of The Second Kind towards, described image magnetic regions is that 11-14 passage 55-95 is capable, identify described bank note towards being reverse side forward.
Wherein, the magnetic data of described acquisition bank note comprises:
Obtain the magnetic picture of bank note, described magnetic picture is made up of background signal and magnetic dot signal;
Carry out filtering process to described magnetic picture, described filtering process uses Fourier transform and inverse Fourier transform;
Extract the magnetic dot signal after filtering process, the magnetic data of described magnetic dot signal composition bank note.
Wherein, the magnetic data value of described background signal is 1800-2200, and the magnetic data value of described magnetic dot signal is for being greater than 2200 or be less than 1800.
Adopt a kind of bank note towards recognition device on the other hand, comprising:
Acquiring unit, for obtaining the magnetic data of bank note, according to described magnetic data positioning security line magnetic regions, crown word number magnetic regions respectively;
Judging unit, for according to described safety line magnetic region decision bank note towards be safety line be positioned at right side the first kind towards or safety line be positioned at left side Equations of The Second Kind towards, the described first kind is reverse towards comprising front forward and reverse side, and described Equations of The Second Kind is towards comprising front oppositely and reverse side forward;
First recognition unit, if for bank note towards be the first kind towards, according to described crown word number magnetic regions identify described bank note towards for front forward or reverse side reverse;
Second recognition unit, if for bank note towards be Equations of The Second Kind towards, according to described crown word number magnetic regions identify described bank note towards for front oppositely or reverse side forward.
Wherein, also comprise:
3rd recognition unit, for identify according to described image magnetic regions described bank note towards for front forward or reverse side reverse; Judge that whether the result of described image magnetic regions identification is identical with the result of described crown word number image-region identification, if so, this identifies correct, otherwise, this identification error;
4th recognition unit, for identify according to described image magnetic regions described bank note towards for front oppositely or reverse side forward; Judge that whether the result of described image magnetic regions identification is identical with the result of described crown word number image-region identification, if so, this identifies correct, otherwise, this identification error.
Wherein, acquiring unit, also for according to described magnetic data positioning image magnetic regions;
The magnetic data of described acquisition bank note comprises:
Obtain the magnetic picture of bank note, described magnetic picture is made up of background signal and magnetic dot signal;
Carry out filtering process to described magnetic picture, described filtering process uses Fourier transform and inverse Fourier transform;
Extract the magnetic dot signal after filtering process, the magnetic data of described magnetic dot signal composition bank note;
First recognition unit, if specifically for bank note towards be the first kind towards, described crown word number magnetic regions is capable at 12-16 passage 65-95, identify described bank note towards being front forward; If bank note towards being the first kind towards, described crown word number magnetic regions at 12-16 path 10-40 row, identify described bank note towards for reverse side reverse;
Second recognition unit, if specifically for bank note towards being Equations of The Second Kind towards, described crown word number magnetic regions at 2-6 path 10-40 row, identify described bank note towards for front reverse; If bank note towards be Equations of The Second Kind towards, described crown word number magnetic regions is capable at 2-6 passage 65-95, identify described bank note towards reverse side forward.
3rd recognition unit, if specifically for bank note towards be the first kind towards, described image magnetic regions is that 5-9 passage 55-95 is capable, identify described bank note towards being front forward; If bank note towards be the first kind towards, described image magnetic regions is that 5-9 passage 40-80 is capable, identify described bank note towards for reverse side reverse; Judge that whether the result of described image magnetic regions identification is identical with the result of described crown word number image-region identification, if so, this identifies correct, otherwise, this identification error.
4th recognition unit, if specifically for bank note towards be Equations of The Second Kind towards, described image magnetic regions is that 11-14 passage 40-80 is capable, identify described bank note towards for front reverse; If bank note towards be Equations of The Second Kind towards, described image magnetic regions is that 11-14 passage 55-95 is capable, identify described bank note towards being reverse side forward; Judge that whether the result of described image magnetic regions identification is identical with the result of described crown word number image-region identification, if so, this identifies correct, otherwise, this identification error.
Beneficial effect of the present invention is: the embodiment of the present invention passes through the magnetic data obtaining bank note, according to described magnetic data positioning security line magnetic regions, crown word number magnetic regions respectively; According to described safety line magnetic region decision bank note towards be safety line be positioned at right side the first kind towards or safety line be positioned at left side Equations of The Second Kind towards, the described first kind is reverse towards comprising front forward and reverse side, and described Equations of The Second Kind is towards comprising front oppositely and reverse side forward; If bank note towards be the first kind towards, according to described crown word number magnetic regions identify described bank note towards for front forward or reverse side reverse; If bank note towards be Equations of The Second Kind towards, according to described crown word number magnetic regions identify described bank note towards for front oppositely or reverse side forward.The present invention by safety line magnetic region tentatively judge bank note towards being divided into two classes, again with crown word number magnetic regions confirm bank note towards, add the accuracy rate of paper money recognition, and magnetic data amount magnetic data amount is significantly less than image data amount, the little processing speed of data volume is fast, use the Information of magnetic data identification banknote, compare use view data identification towards, significantly improve the processing speed of paper money recognition.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing the embodiment of the present invention is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the content of the embodiment of the present invention and these accompanying drawings.
Fig. 1 is a kind of bank note of providing in specific embodiment of the invention method flow diagram towards the first embodiment of recognition methods.
Fig. 2 is a kind of bank note of providing in specific embodiment of the invention method flow diagram towards the second embodiment of recognition methods.
Fig. 3 is a kind of bank note of providing in specific embodiment of the invention block diagram towards the first embodiment of recognition device.
Fig. 4 is a kind of bank note of providing in specific embodiment of the invention block diagram towards the second embodiment of recognition device.
Embodiment
The technical matters solved for making the present invention, the technical scheme of employing and the technique effect that reaches are clearly, be described in further detail below in conjunction with the technical scheme of accompanying drawing to the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those skilled in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 1, it is a kind of bank note of providing in specific embodiment of the invention method flow diagram towards the first embodiment of recognition methods.As shown in the figure, this bank note, towards recognition methods, comprising:
Step S101, obtains the magnetic data of bank note, according to described magnetic data positioning security line magnetic regions, crown word number magnetic regions respectively.
Concrete, bank note adopts crown word number region, safety line region (bonding jumper region) uses the printing of magnetic anti-counterfeit technologic material; Under magnetic sensor, do not have the region of magnetic signal to be background area, the magnetic data of signal of being magnetic then differs larger with the magnetic data value of background area, the magnetic data of bank note can be collected easily, wherein safety line magnetic region is bar shaped distribution, crown word number magnetic regions is near the rectangular distribution in the angle of bank note, and the shape according to the magnetic data gathered distinguishes positioning security line magnetic regions, crown word number magnetic regions.
Step S102, according to described safety line magnetic region decision bank note towards be safety line be positioned at right side the first kind towards or safety line be positioned at left side Equations of The Second Kind towards, the described first kind is reverse towards comprising front forward and reverse side, and described Equations of The Second Kind is towards comprising front oppositely and reverse side forward.
Concrete, bank note towards difference, the position also corresponding difference of safety line, safety line is positioned at right side and safety line is positioned at the left side situation that correspondence two kinds is different respectively, wherein, when safety line is positioned at right side, bank note is reverse towards comprising front forward and reverse side, bank note towards comprising towards front oppositely and reverse side forward when safety line is positioned at left side.
In the present embodiment, magnetic data is divided into 18 passages, for safety line magnetic region is positioned at 10-12 passage on the right side of described safety line is positioned at, for safety line magnetic region is positioned at 7-9 passage on the left of described safety line is positioned at.
Step S103, if bank note towards be the first kind towards, according to described crown word number magnetic regions identify described bank note towards for front forward or reverse side reverse.
Concrete, when judge according to safety line bank note towards be belong to the first kind towards be front forward and reverse side reverse time, then according to the identification of crown word number magnetic regions specifically identify bank note towards be for front forward or reverse side reverse.
In the present embodiment, magnetic data is divided into 138 row, if bank note towards be the first kind towards, described crown word number magnetic regions is capable at 12-16 passage 65-95, identify described bank note towards being front forward; If bank note towards being the first kind towards, described crown word number magnetic regions at 12-16 path 10-40 row, identify described bank note towards for reverse side reverse.
Step S104, if bank note towards be Equations of The Second Kind towards, according to described crown word number magnetic regions identify described bank note towards for front oppositely or reverse side forward.
Concrete, when judge according to safety line bank note towards be belong to Equations of The Second Kind towards i.e. front oppositely and reverse side forward time, then according to the identification of crown word number magnetic regions specifically identify bank note towards being for front is reverse and reverse side forward.
In the present embodiment, magnetic data is divided into 138 row, if bank note towards being Equations of The Second Kind towards, described crown word number magnetic regions at 2-6 path 10-40 row, identify described bank note towards for front reverse; If bank note towards be Equations of The Second Kind towards, described crown word number magnetic regions is capable at 2-6 passage 65-95, identify described bank note towards reverse side forward.
It should be noted that, step S103 and step S104 is the two kind situations of bank note towards identification, there is not sequencing, is select step S103 or step S104 one wherein when paper money recognition.
In sum, the embodiment of the present invention passes through the magnetic data obtaining bank note, according to described magnetic data positioning security line magnetic regions, crown word number magnetic regions respectively; According to described safety line magnetic region decision bank note towards be safety line be positioned at right side the first kind towards or safety line be positioned at left side Equations of The Second Kind towards, the described first kind is reverse towards comprising front forward and reverse side, and described Equations of The Second Kind is towards comprising front oppositely and reverse side forward; If bank note towards be the first kind towards, according to described crown word number magnetic regions identify described bank note towards for front forward or reverse side reverse; If bank note towards be Equations of The Second Kind towards, according to described crown word number magnetic regions identify described bank note towards for front oppositely or reverse side forward.First by safety line magnetic region tentatively judge bank note towards being divided into two classes, again with crown word number magnetic regions confirm bank note towards, add the accuracy rate of paper money recognition, and magnetic data amount magnetic data amount is significantly less than image data amount, the little processing speed of data volume is fast, use the Information of magnetic data identification banknote, compare use view data identification towards, significantly improve the processing speed of paper money recognition.
Please refer to Fig. 2, it is a kind of bank note of providing in specific embodiment of the invention method flow diagram towards the second embodiment of recognition methods.As shown in the figure, this bank note, towards recognition methods, comprising:
Step S201, obtain the magnetic picture of bank note, described magnetic picture is made up of background signal and magnetic dot signal.
Concrete, the magnetic picture of bank note is obtained by magnetic sensor, magnetic picture is made up of background signal and magnetic dot signal, under magnetic sensor, do not have the region of magnetic signal to be background area, background area differs comparatively large with the magnetic data value of the signal area that is magnetic, thus can collect the magnetic data of bank note easily.
In the present embodiment, the magnetic data value of background signal is 1800-2200, and the magnetic data value of described magnetic dot signal is for being greater than 2200 or be less than 1800.Those skilled in the art should know, the precision that scans along with magnetic sensor of the separatrix of magnetic dot signal and the magnetic data value of background signal is different and change accordingly, thus take the precision of different scanning can obtain the separatrix of different magnetic data values, do not repeat herein.
Step S202, carries out filtering process to described magnetic picture, and described filtering process uses Fourier transform and inverse Fourier transform.
Concrete, use Fourier transform and inverse Fourier transform to carry out filtering process to magnetic data, stress release treatment is on the impact of magnetic signal, and described noise mainly refers to background signal, thus further increases the accuracy rate of magnetic data collection.
Step S203, extracts the magnetic dot signal after filtering process, the magnetic data of described magnetic dot signal composition bank note.
Step S204, according to described magnetic data positioning security line magnetic regions, crown word number magnetic regions, image magnetic regions respectively.
Concrete, bank note adopts crown word number region, safety line region (bonding jumper region) and image-region to use the printing of magnetic anti-counterfeit technologic material; The region not having magnetic signal under magnetic sensor is background area, and the magnetic data of the signal that is magnetic then differs comparatively large with the magnetic data value of background area, can collect the magnetic data of bank note easily.Safety line magnetic region is bar shaped distribution, crown word number magnetic regions and all rectangular distribution of image magnetic regions, wherein, crown word number magnetic regions is little compared with magnetic picture region, and the shape according to the magnetic data gathered distinguishes positioning security line magnetic regions, crown word number magnetic regions.Such as, the crown word number region of Renminbi, the image-region (Great Hall of the People area of the pattern of 100 yuan, the Potala Palace area of the pattern of 50 yuan) and the printing of bonding jumper region use magnetic anti-counterfeit technologic material, magnetic stripe signal is that whole magnetic stripe all has magnetic signal, and magnetic signal accounts for the whole passage of magnetic signal; Crown word number with the Great Hall of the People/Potala Palace because the height occupied on bank note is different with width, safety line magnetic stripe signal, crown word number regional signal, the Great Hall of the People/Potala Palace regional signal can well be distinguished, thus positioning security line magnetic regions, crown word number magnetic regions, image magnetic regions.
Step S205, according to described safety line magnetic region decision bank note towards be safety line be positioned at right side the first kind towards or safety line be positioned at left side Equations of The Second Kind towards, the described first kind is reverse towards comprising front forward and reverse side, and described Equations of The Second Kind is towards comprising front oppositely and reverse side forward.
Step S206, if bank note towards be the first kind towards, according to described crown word number magnetic regions identify described bank note towards for front forward or reverse side reverse.
Step S207, if bank note towards be Equations of The Second Kind towards, according to described crown word number magnetic regions identify described bank note towards for front oppositely or reverse side forward.
It should be noted that, step S206 and step S207 is the two kind situations of bank note towards identification, there is not sequencing, is select step S206 or step S207 one wherein when paper money recognition.When paper money recognition, if the situation in step S206, then proceed step S208, if the situation in step S207, then proceed step S209.
Step S208, according to described image magnetic regions identify described bank note towards for front forward or reverse side reverse; Judge that whether the result of described image magnetic regions identification is identical with the result of described crown word number image-region identification, if so, this identifies correct, otherwise, this identification error.
In the present embodiment, when identify according to described image magnetic regions described bank note towards during for front forward, then according to image magnetic regions to bank note towards identifying, if identify bank note towards being front forward, then this identifies correct, otherwise, this identification error.When identify according to described image magnetic regions described bank note towards for reverse side reverse time, then according to image magnetic regions to bank note towards identifying, if identify bank note towards for reverse side reverse, then this identifies correct, otherwise, this identification error.
Concrete, in the present embodiment, magnetic data is divided into 18 passages, 138 row, if bank note towards be the first kind towards, described crown word number magnetic regions is capable at 12-16 passage 65-95, identify described bank note towards being front forward, if now image magnetic regions is capable at 5-9 passage 55-95, identify described bank note towards being front forward, then this identifies correct; Otherwise, this identification error.If bank note towards be the first kind towards, described crown word number magnetic regions is at 12-16 path 10-40 row, identify described bank note towards for reverse side reverse, if now image magnetic regions is that 5-9 passage 40-80 is capable, identify described bank note towards for reverse side reverse, identify described bank note towards being front forward, then this identifies correct; Otherwise, this identification error.
Step S209, according to described image magnetic regions identify described bank note towards for front oppositely or reverse side forward; Judge that whether the result of described image magnetic regions identification is identical with the result of described crown word number image-region identification, if so, this identifies correct, otherwise, this identification error.
In the present embodiment, when identify according to described image magnetic regions described bank note towards for front reverse time, then according to image magnetic regions to bank note towards identifying, if identify bank note towards for front reverse, then this identifies correct, otherwise, this identification error.When identify according to described image magnetic regions described bank note towards during for reverse side forward, then according to image magnetic regions to bank note towards identifying, if identify bank note towards being reverse side forward, then this identifies correct, otherwise, this identification error.
Concrete, in the present embodiment, magnetic data is divided into 18 passages, 138 row, if bank note towards be Equations of The Second Kind towards, described crown word number magnetic regions is at 2-6 path 10-40 row, identify described bank note towards for front reverse, if now image magnetic regions is that 11-14 passage 40-80 is capable, identify described bank note towards for front reverse, then this identifies correct; Otherwise, this identification error.If bank note towards be Equations of The Second Kind towards, described crown word number magnetic regions is capable at 2-6 passage 65-95, identify described bank note towards reverse side forward, if now image magnetic regions is that 11-14 passage 55-95 is capable, identify described bank note towards being reverse side forward, then this identifies correct, otherwise, this identification error.
It should be noted that, step S208 and step S209 is the two kind situations of bank note towards identification, there is not sequencing, is select step S208 or step S209 one wherein when paper money recognition.When paper money recognition, if the situation in step S206, then proceed step S208, if the situation in step S207, then proceed step S209.
In sum, in the embodiment of the present invention first according to safety line magnetic region tentatively judge bank note towards being divided into two classes, again with crown word number magnetic regions confirm bank note towards, then carry out second time by image magnetic regions again to identify, judge that twice towards identifying whether unanimously, when twice consistent towards identification, then error-free towards identification; When twice inconsistent towards identification, then towards identification error, greatly improve bank note towards the accuracy rate identified.
Be below the embodiment of a kind of bank note of this programme towards recognition methods, a kind of bank note realizes towards the embodiment of recognition device based on the embodiment of a kind of bank note towards recognition methods, in the description that a kind of bank note is not most in the embodiment of recognition device, please refer to the embodiment of a kind of bank note towards recognition methods.
Please refer to Fig. 3, it is a kind of bank note of providing in specific embodiment of the invention block diagram towards the first embodiment of recognition device.As shown in the figure, this bank note, towards recognition device, comprising:
Acquiring unit 310, for obtaining the magnetic data of bank note, according to described magnetic data positioning security line magnetic regions, crown word number magnetic regions respectively.
Judging unit 320, for according to described safety line magnetic region decision bank note towards be safety line be positioned at right side the first kind towards or safety line be positioned at left side Equations of The Second Kind towards, the described first kind is reverse towards comprising front forward and reverse side, and described Equations of The Second Kind is towards comprising front oppositely and reverse side forward.
First recognition unit 330, if for bank note towards be the first kind towards, according to described crown word number magnetic regions identify described bank note towards for front forward or reverse side reverse.
Second recognition unit 340, if for bank note towards be Equations of The Second Kind towards, according to described crown word number magnetic regions identify described bank note towards for front oppositely or reverse side forward.
In sum, above-mentioned unit collaborative work, by obtaining the magnetic data of bank note, according to described magnetic data positioning security line magnetic regions, crown word number magnetic regions respectively; According to described safety line magnetic region decision bank note towards be safety line be positioned at right side the first kind towards or safety line be positioned at left side Equations of The Second Kind towards, the described first kind is reverse towards comprising front forward and reverse side, and described Equations of The Second Kind is towards comprising front oppositely and reverse side forward; If bank note towards be the first kind towards, according to described crown word number magnetic regions identify described bank note towards for front forward or reverse side reverse; If bank note towards be Equations of The Second Kind towards, according to described crown word number magnetic regions identify described bank note towards for front oppositely or reverse side forward.First by safety line magnetic region tentatively judge bank note towards being divided into two classes, again with crown word number magnetic regions confirm bank note towards, add the accuracy rate of paper money recognition, and magnetic data amount magnetic data amount is significantly less than image data amount, the little processing speed of data volume is fast, use the Information of magnetic data identification banknote, compare use view data identification towards, significantly improve bank note towards the processing speed identified.
Please refer to Fig. 4, it is a kind of bank note of providing in specific embodiment of the invention block diagram towards the first embodiment of recognition device.As shown in the figure, this bank note, towards recognition device, comprising:
Acquiring unit 310, for obtaining the magnetic data of bank note, according to described magnetic data positioning security line magnetic regions, crown word number magnetic regions respectively.
Concrete, acquiring unit 310, also for according to described magnetic data positioning image magnetic regions; The magnetic data of described acquisition bank note comprises: the magnetic picture obtaining bank note, and described magnetic picture is made up of background signal and magnetic dot signal; Carry out filtering process to described magnetic picture, described filtering process uses Fourier transform and inverse Fourier transform; Extract the magnetic dot signal after filtering process, the magnetic data of described magnetic dot signal composition bank note.
Judging unit 320, for according to described safety line magnetic region decision bank note towards be safety line be positioned at right side the first kind towards or safety line be positioned at left side Equations of The Second Kind towards, the described first kind is reverse towards comprising front forward and reverse side, and described Equations of The Second Kind is towards comprising front oppositely and reverse side forward.
First recognition unit 330, if for bank note towards be the first kind towards, according to described crown word number magnetic regions identify described bank note towards for front forward or reverse side reverse.
Concrete, the first recognition unit 330, if specifically for bank note towards be the first kind towards, described crown word number magnetic regions is capable at 12-16 passage 65-95, identify described bank note towards being front forward; If bank note towards being the first kind towards, described crown word number magnetic regions at 12-16 path 10-40 row, identify described bank note towards for reverse side reverse;
Second recognition unit 340, if for bank note towards be Equations of The Second Kind towards, according to described crown word number magnetic regions identify described bank note towards for front oppositely or reverse side forward.
Concrete, the second recognition unit 340, if specifically for bank note towards being Equations of The Second Kind towards, described crown word number magnetic regions at 2-6 path 10-40 row, identify described bank note towards for front reverse; If bank note towards be Equations of The Second Kind towards, described crown word number magnetic regions is capable at 2-6 passage 65-95, identify described bank note towards reverse side forward.
3rd recognition unit 350, for identify according to described image magnetic regions described bank note towards for front forward or reverse side reverse; Judge that whether the result of described image magnetic regions identification is identical with the result of described crown word number image-region identification, if so, this identifies correct, otherwise, this identification error.
Concrete, the 3rd recognition unit 350, if specifically for bank note towards be the first kind towards, described image magnetic regions is that 5-9 passage 55-95 is capable, identify described bank note towards being front forward; If bank note towards be the first kind towards, described image magnetic regions is that 5-9 passage 40-80 is capable, identify described bank note towards for reverse side reverse; Judge that whether the result of described image magnetic regions identification is identical with the result of described crown word number image-region identification, if so, this identifies correct, otherwise, this identification error.
4th recognition unit 360, for identify according to described image magnetic regions described bank note towards for front oppositely or reverse side forward; Judge that whether the result of described image magnetic regions identification is identical with the result of described crown word number image-region identification, if so, this identifies correct, otherwise, this identification error.
Concrete, the 4th recognition unit 360, if specifically for bank note towards be Equations of The Second Kind towards, described image magnetic regions is that 11-14 passage 40-80 is capable, identify described bank note towards for front reverse; If bank note towards be Equations of The Second Kind towards, described image magnetic regions is that 11-14 passage 55-95 is capable, identify described bank note towards being reverse side forward; Judge that whether the result of described image magnetic regions identification is identical with the result of described crown word number image-region identification, if so, this identifies correct, otherwise, this identification error.
It should be noted that, when paper money recognition, if identified by the first recognition unit 330 before this, then continue employing the 3rd recognition unit 350 and carry out Discern and judge, if identified by the second recognition unit 340 before this, then continue employing the 4th recognition unit 360 and carry out Discern and judge.
In sum, above-mentioned unit collaborative work, in the embodiment of the present invention first according to safety line magnetic region tentatively judge bank note towards being divided into two classes, again with crown word number magnetic regions confirm bank note towards, then carry out second time by image magnetic regions again to identify, judge that twice towards identifying whether unanimously, when twice is consistent towards identification, then error-free towards identification; When twice inconsistent towards identification, then towards identification error, greatly improve bank note towards the accuracy rate identified.
In the embodiment of the present invention, magnetic data only has 18 passages, 138 row data; And view data is 693 row, 3456 row, magnetic data amount is fewer than image data amount nearly 1000 times, the little processing speed of data volume is fast, uses the Information of magnetic data identification banknote, compare use view data identification towards, significantly improve algorithm process speed; Depend on the consistance of cmos sensor (CIS sensor) brightness unduly compared to image information, and CIS brightness uniformity correction program is loaded down with trivial details, is difficult to be corrected to ideal range during operative sensor CIS gamma correction; Brightness of image is affected by bank note newness, stained, person's handwriting etc. also can simultaneously, uses magnetic data identification banknote Information, can eliminate CIS luminance difference and cause towards knowledge situation by mistake, improve the discrimination of algorithm; Use image recognition banknote towards time, cannot according to Image Priori Knowledge to towards identifying whether wrong judging; Because banknote magnetic information is one of them important false proof point of banknote, and magnetic fraud difficulty is large, can reduce owing to causing other algorithm zone location mistakes towards identification error; Use crown word number, safety line magnetic dot distribution judge banknote towards, the magnetic dot distribution secondary-confirmation banknote re-using image-region (as the Great Hall of the People in Renminbi 100 yuan, Potala Palace in 50 yuan) towards, ensure that the accuracy towards identifying and robustness.
Below know-why of the present invention is described in conjunction with specific embodiments.These describe just in order to explain principle of the present invention, and can not be interpreted as limiting the scope of the invention by any way.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other embodiment of the present invention, and these modes all will fall within protection scope of the present invention.
Claims (10)
1. bank note is towards a knowledge method for distinguishing, it is characterized in that, comprising:
Obtain the magnetic data of bank note, according to described magnetic data positioning security line magnetic regions, crown word number magnetic regions respectively;
According to described safety line magnetic region decision bank note towards be safety line be positioned at right side the first kind towards or safety line be positioned at left side Equations of The Second Kind towards, the described first kind is reverse towards comprising front forward and reverse side, and described Equations of The Second Kind is towards comprising front oppositely and reverse side forward;
If bank note towards be the first kind towards, according to described crown word number magnetic regions identify described bank note towards for front forward or reverse side reverse;
If bank note towards be Equations of The Second Kind towards, according to described crown word number magnetic regions identify described bank note towards for front oppositely or reverse side forward.
2. method according to claim 1, is characterized in that, after the magnetic data of described acquisition bank note, also comprises: according to described magnetic data positioning image magnetic regions;
If described bank note towards be the first kind towards, according to described crown word number magnetic regions identify described bank note towards for front forward or reverse side oppositely after, also comprise:
According to described image magnetic regions identify described bank note towards for front forward or reverse side reverse; Judge that whether the result of described image magnetic regions identification is identical with the result of described crown word number image-region identification, if so, this identifies correct, otherwise, this identification error;
If bank note towards be Equations of The Second Kind towards, according to described crown word number magnetic regions identify described bank note towards for front is oppositely or after reverse side forward, also comprise:
According to described image magnetic regions identify described bank note towards for front oppositely or reverse side forward; Judge that whether the result of described image magnetic regions identification is identical with the result of described crown word number image-region identification, if so, this identifies correct, otherwise, this identification error.
3. method according to claim 2, is characterized in that, described magnetic data is divided into 18 passages, for safety line magnetic region is positioned at 10-12 passage on the right side of described safety line is positioned at, for safety line magnetic region is positioned at 7-9 passage on the left of described safety line is positioned at.
4. method according to claim 3, is characterized in that, described magnetic data is divided into 138 row;
If bank note towards be the first kind towards, according to described crown word number magnetic regions identify described bank note towards for front forward or reverse side reverse, comprising:
If bank note towards be the first kind towards, described crown word number magnetic regions is capable at 12-16 passage 65-95, identify described bank note towards being front forward; If bank note towards being the first kind towards, described crown word number magnetic regions at 12-16 path 10-40 row, identify described bank note towards for reverse side reverse;
If bank note towards be Equations of The Second Kind towards, according to described crown word number magnetic regions identify described bank note towards for front oppositely or reverse side forward, comprising:
If bank note towards being Equations of The Second Kind towards, described crown word number magnetic regions at 2-6 path 10-40 row, identify described bank note towards for front reverse; If bank note towards be Equations of The Second Kind towards, described crown word number magnetic regions is capable at 2-6 passage 65-95, identify described bank note towards reverse side forward.
5. method according to claim 4, is characterized in that, described according to described image magnetic regions identify described bank note towards for front forward or reverse side reverse, comprising:
If bank note towards be the first kind towards, described image magnetic regions is that 5-9 passage 55-95 is capable, identify described bank note towards being front forward; If bank note towards be the first kind towards, described image magnetic regions is that 5-9 passage 40-80 is capable, identify described bank note towards for reverse side reverse;
Described according to described image magnetic regions identify described bank note towards for front oppositely or reverse side forward, comprising:
If bank note towards be Equations of The Second Kind towards, described image magnetic regions is that 11-14 passage 40-80 is capable, identify described bank note towards for front reverse; If bank note towards be Equations of The Second Kind towards, described image magnetic regions is that 11-14 passage 55-95 is capable, identify described bank note towards being reverse side forward.
6. method according to claim 1, is characterized in that, the magnetic data of described acquisition bank note comprises:
Obtain the magnetic picture of bank note, described magnetic picture is made up of background signal and magnetic dot signal;
Carry out filtering process to described magnetic picture, described filtering process uses Fourier transform and inverse Fourier transform;
Extract the magnetic dot signal after filtering process, the magnetic data of described magnetic dot signal composition bank note.
7. method according to claim 6, is characterized in that, the magnetic data value of described background signal is 1800-2200, and the magnetic data value of described magnetic dot signal is for being greater than 2200 or be less than 1800.
8. bank note is towards the device identified, it is characterized in that, comprising:
Acquiring unit, for obtaining the magnetic data of bank note, according to described magnetic data positioning security line magnetic regions, crown word number magnetic regions respectively;
Judging unit, for according to described safety line magnetic region decision bank note towards be safety line be positioned at right side the first kind towards or safety line be positioned at left side Equations of The Second Kind towards, the described first kind is reverse towards comprising front forward and reverse side, and described Equations of The Second Kind is towards comprising front oppositely and reverse side forward;
First recognition unit, if for bank note towards be the first kind towards, according to described crown word number magnetic regions identify described bank note towards for front forward or reverse side reverse;
Second recognition unit, if for bank note towards be Equations of The Second Kind towards, according to described crown word number magnetic regions identify described bank note towards for front oppositely or reverse side forward.
9. device according to claim 8, is characterized in that, also comprises:
3rd recognition unit, for identify according to described image magnetic regions described bank note towards for front forward or reverse side reverse; Judge that whether the result of described image magnetic regions identification is identical with the result of described crown word number image-region identification, if so, this identifies correct, otherwise, this identification error;
4th recognition unit, for identify according to described image magnetic regions described bank note towards for front oppositely or reverse side forward; Judge that whether the result of described image magnetic regions identification is identical with the result of described crown word number image-region identification, if so, this identifies correct, otherwise, this identification error.
10. device according to claim 9, is characterized in that,
Acquiring unit, also for according to described magnetic data positioning image magnetic regions;
The magnetic data of described acquisition bank note comprises:
Obtain the magnetic picture of bank note, described magnetic picture is made up of background signal and magnetic dot signal;
Carry out filtering process to described magnetic picture, described filtering process uses Fourier transform and inverse Fourier transform;
Extract the magnetic dot signal after filtering process, the magnetic data of described magnetic dot signal composition bank note;
First recognition unit, if specifically for bank note towards be the first kind towards, described crown word number magnetic regions is capable at 12-16 passage 65-95, identify described bank note towards being front forward; If bank note towards being the first kind towards, described crown word number magnetic regions at 12-16 path 10-40 row, identify described bank note towards for reverse side reverse;
Second recognition unit, if specifically for bank note towards being Equations of The Second Kind towards, described crown word number magnetic regions at 2-6 path 10-40 row, identify described bank note towards for front reverse; If bank note towards be Equations of The Second Kind towards, described crown word number magnetic regions is capable at 2-6 passage 65-95, identify described bank note towards reverse side forward;
3rd recognition unit, if specifically for bank note towards be the first kind towards, described image magnetic regions is that 5-9 passage 55-95 is capable, identify described bank note towards being front forward; If bank note towards be the first kind towards, described image magnetic regions is that 5-9 passage 40-80 is capable, identify described bank note towards for reverse side reverse; Judge that whether the result of described image magnetic regions identification is identical with the result of described crown word number image-region identification, if so, this identifies correct, otherwise, this identification error;
4th recognition unit, if specifically for bank note towards be Equations of The Second Kind towards, described image magnetic regions is that 11-14 passage 40-80 is capable, identify described bank note towards for front reverse; If bank note towards be Equations of The Second Kind towards, described image magnetic regions is that 11-14 passage 55-95 is capable, identify described bank note towards being reverse side forward; Judge that whether the result of described image magnetic regions identification is identical with the result of described crown word number image-region identification, if so, this identifies correct, otherwise, this identification error.
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