CN106408748A - Method and apparatus for checking new edition RMB banknote - Google Patents
Method and apparatus for checking new edition RMB banknote Download PDFInfo
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- CN106408748A CN106408748A CN201610812485.3A CN201610812485A CN106408748A CN 106408748 A CN106408748 A CN 106408748A CN 201610812485 A CN201610812485 A CN 201610812485A CN 106408748 A CN106408748 A CN 106408748A
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- Prior art keywords
- pixel
- safety line
- article
- line feature
- value
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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
- G07D7/2008—Testing patterns thereon using pre-processing, e.g. de-blurring, averaging, normalisation or rotation
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Abstract
The invention discloses a method and apparatus for checking a new-edition RMB banknote. The method comprises the steps of intercepting an area to be checked in a new-edition RMB banknote to be checked, and the area to be checked containing a second safety line feature area, conducting binary processing for the second safety line feature area, calculating the left and right boundaries according to a second safety line feature, matching a second safety line feature within a scope defined by left and right boundaries with a template, and determining the new-edition RMB banknote is authentic if the second safety line feature within a scope defined by left and right boundaries matches with the template. The method is low in algorithm complexity, and the time efficiency is high for the feature template matching algorithm. Selection of a binary threshold is set according to the proportion actually occupied by a black block, the binary effect is good, and the interference of noise is unlikely to occur. The method for checking black-and-white characteristics based on template matching ensures high accuracy.
Description
Technical field
The present embodiments relate to the technical field of paper money recognition, more particularly, to a kind of method of detection new edition RMB and
Device.
Background technology
Paper money recognition is included face amount and is differentiated with forge or true or paper money towards identification.The general identification process of bank note is first bank note to be entered
The pretreatment such as line tilt correction, then identify the currency type of bank note and face amount towards, further according to bank note face amount towards carrying out paper
The discriminating of the coin true and false.The face amount identification of bank note occupies critically important status, if first not identifying face amount, just in the identification of bank note
It is far from being and real and fake discrimination is carried out to bank note.
Because bill acceptor system requires there is real-time, typically require the face amount completing bank note in 40ms towards identification
With real and fake discrimination, so being necessary for being optimized process to recognizer.General bank note face amount recognition methodss are to bank note number
Process according to the 2-D data carrying out full width face, to the image of the bank note face amount characteristic area getting and storage in memory
The standard form of different bank note face amount characteristic areas is compared, when image and the standard of the bank note face amount characteristic area getting
When template matching correlation is more than the threshold value setting, it is this template face amount.
Existing template matching algorithm, compare is overall consistent points between template and object to be matched, if phase
Same ratio exceedes certain threshold value, that is, think that the match is successful.And the mode of this template matching fails preferably to distinguish background
Region and face amount region, because the accuracy of template matching is relatively low.
Content of the invention
The purpose of the embodiment of the present invention is to propose a kind of method and device of detection new edition RMB it is intended to how solve
Improve the problem of the accuracy of mirror paper money.
For reaching this purpose, the embodiment of the present invention employs the following technical solutions：
In a first aspect, a kind of method of detection new edition RMB, methods described includes：
Intercept the region to be identified in new edition RMB to be detected, described region to be identified includes Article 2 safety line feature
Region；
Binary conversion treatment is carried out to the region of described Article 2 safety line feature；
According to described Article 2 safety line feature calculation right boundary, and to the Article 2 safety line in the range of right boundary
Feature carries out template matching；
If the Article 2 safety line feature in the range of right boundary can be with described template matching it is determined that described new edition people
People's coin is true.
Preferably, the described region to described Article 2 safety line feature carries out binary conversion treatment, including：
Pixel values in regions distribution histogram after statistics binary conversion treatment；
Obtain the pixel number more than or equal to presetted pixel value, when pixel number with to exceed described pixel Distribution value straight
The all pixels point predetermined threshold value of square in figure, then described pixel value is binary-state threshold；
Will be greater than being entered as 255 equal to the pixel of described binary-state threshold, by the pixel less than described binary-state threshold
The point of point threshold value is entered as 0.
Preferably, described according to described Article 2 safety line feature calculation right boundary, including：
Calculate row and, and obtain the position at the maximum row of change and place, right boundary determined according to described position.
Preferably, described template matching is carried out to the Article 2 safety line feature in the range of right boundary, including：
Determine whether described Article 2 safety line feature meets the safety line feature in template；Described safety line is characterized as week
Phase and intermittent occur in default up-downgoing and are spaced line number and be more than or equal to the pixel of described binary-state threshold and described default
Up-downgoing is spaced the pixel that line number is less than described binary-state threshold.
Preferably, described template matching is carried out to the Article 2 safety line feature in the range of right boundary, including：
Obtain the pixel number that pixel in described default upper and lower spaced rows number is not 0 and be more than predetermined number threshold value
First numerical value；
Obtain the second value that the pixel number that pixel in predetermined interval line number is 0 is more than predetermined number threshold value；
If described first numerical value and described second value are cycle and intermittent occurring it is determined that in the range of right boundary
Article 2 safety line feature can be with described template matching；
If described first numerical value and described second value are not cycle and intermittent occurring it is determined that in right boundary scope
Interior Article 2 safety line feature can not be with described template matching.
Second aspect, a kind of device of detection new edition RMB, described device includes：
Interception module, for intercepting the region to be identified in new edition RMB to be detected, described region to be identified includes
Article two, the region of safety line feature；
Binary conversion treatment module, for carrying out binary conversion treatment to the region of described Article 2 safety line feature；
Computing module, for according to described Article 2 safety line feature calculation right boundary；
Matching module, for carrying out template matching to the Article 2 safety line feature in the range of right boundary；
Determining module, if for the Article 2 safety line feature in the range of right boundary can with described template matching,
Determine that described new edition RMB is true.
Preferably, described binary conversion treatment module, specifically for：
Pixel values in regions distribution histogram after statistics binary conversion treatment；
Obtain the pixel number more than or equal to presetted pixel value, when pixel number with to exceed described pixel Distribution value straight
The all pixels point predetermined threshold value of square in figure, then described pixel value is binary-state threshold；
Will be greater than being entered as 255 equal to the pixel of described binary-state threshold, by the pixel less than described binary-state threshold
The point of point threshold value is entered as 0.
Preferably, described computing module, specifically for：
Calculate row and, and obtain the position at the maximum row of change and place, right boundary determined according to described position.
Preferably, described matching module, specifically for：
Determine the safety line feature whether described Article 2 safety line feature meets in template, described safety line is characterized as week
Phase and intermittent occur in default up-downgoing and are spaced line number and be more than or equal to the pixel of described binary-state threshold and described default
Up-downgoing is spaced the pixel that line number is less than described binary-state threshold.
Preferably, described matching module, also particularly useful for：
Obtain the pixel number that pixel in described default upper and lower spaced rows number is not 0 and be more than predetermined number threshold value
First numerical value；
Obtain the second value that the pixel number that pixel in predetermined interval line number is 0 is more than predetermined number threshold value；
If described first numerical value and described second value are cycle and intermittent occurring it is determined that in the range of right boundary
Article 2 safety line feature can be with described template matching；
If described first numerical value and described second value are not cycle and intermittent occurring it is determined that in right boundary scope
Interior Article 2 safety line feature can not be with described template matching.
The embodiment of the present invention provides a kind of method and device of detection new edition RMB, intercepts in new edition RMB to be detected
Region to be identified, described region to be identified includes the region of Article 2 safety line feature；To described Article 2 safety line feature
Region carry out binary conversion treatment；According to described Article 2 safety line feature calculation right boundary, and to right boundary in the range of
Article 2 safety line feature carry out template matching；If the Article 2 safety line feature in the range of right boundary can be with described mould
Plate mates it is determined that described new edition RMB is true.Inventive algorithm complexity is low, the algorithm being mated according to feature templates, when
Between efficiency high；Ratio setting according to shared by black patch reality for the selection of binary-state threshold, binaryzation effect is good, and is difficult by noise
Interference；Its chequered with black and white feature is detected according to the method for template matching, accuracy rate is high.
Brief description
Fig. 1 is a kind of schematic flow sheet of the method for detection new edition RMB provided in an embodiment of the present invention；
Fig. 2 is a kind of schematic diagram of Article 2 safety line feature provided in an embodiment of the present invention；
Fig. 3 be a kind of binary conversion treatment provided in an embodiment of the present invention after Article 2 safety line feature schematic diagram；
Fig. 4 is a kind of high-level schematic functional block diagram of the device of detection new edition RMB provided in an embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawings and examples the embodiment of the present invention is described in further detail.It is understood that this
The described specific embodiment in place is used only for explaining the embodiment of the present invention, rather than the restriction to the embodiment of the present invention.In addition also
It should be noted that for the ease of description, illustrate only the part related to the embodiment of the present invention rather than entire infrastructure in accompanying drawing.
With reference to Fig. 1, Fig. 1 is a kind of schematic flow sheet of the method for detection new edition RMB provided in an embodiment of the present invention.
As shown in figure 1, the method for described detection new edition RMB includes：
Step 101, intercepts the region to be identified in new edition RMB to be detected, and described region to be identified includes Article 2 peace
The region of all fronts feature；
Specifically, as shown in Fig. 2 Fig. 2 is a kind of schematic diagram of Article 2 safety line feature provided in an embodiment of the present invention.
Step 102, carries out binary conversion treatment to the region of described Article 2 safety line feature；
Specifically, as shown in figure 3, Fig. 3 is the Article 2 safety after a kind of binary conversion treatment provided in an embodiment of the present invention
The schematic diagram of line feature.
Preferably, the described region to described Article 2 safety line feature carries out binary conversion treatment, including：
Pixel values in regions distribution histogram after statistics binary conversion treatment；
Obtain the pixel number more than or equal to presetted pixel value, when pixel number with to exceed described pixel Distribution value straight
The all pixels point predetermined threshold value of square in figure, then described pixel value is binary-state threshold；
Will be greater than being entered as 255 equal to the pixel of described binary-state threshold, by the pixel less than described binary-state threshold
The point of point threshold value is entered as 0.
Specifically, binaryzation is carried out to characteristic area.The threshold value of binaryzation is chosen as follows：
1st, pixel value distribution histogram in statistical regions；
2nd, pixel value number is added up from low to high, when pixel number and (such as whole area when exceeding certain threshold value
The 10% of domain pixel number), pixel value now is set to binary-state threshold；
In safety line characteristic pattern, the ratio that foreground point (the low point of gray value) accounts for total pixel number is less than 20%, can set ratio
Example is 0.2.
3rd, binary conversion treatment.255 are entered as to the point more than threshold value, are entered as 0 less than the point of threshold value.
Step 103, according to described Article 2 safety line feature calculation right boundary, and to second in the range of right boundary
Bar safety line feature carries out template matching；
Preferably, described according to described Article 2 safety line feature calculation right boundary, including：
Calculate row and, and obtain the position at the maximum row of change and place, right boundary determined according to described position.
Preferably, described template matching is carried out to the Article 2 safety line feature in the range of right boundary, including：
Determine whether described Article 2 safety line feature meets the safety line feature in template；Described safety line is characterized as
Cycle and intermittent occur in default up-downgoing and are spaced line number and be more than or equal to the pixel of described binary-state threshold and described pre-
If up-downgoing is spaced the pixel that line number is less than described binary-state threshold.
Described template matching is carried out to the Article 2 safety line feature in the range of right boundary, including：
Obtain the pixel number that pixel in described default upper and lower spaced rows number is not 0 and be more than predetermined number threshold value
First numerical value；
Obtain the second value that the pixel number that pixel in predetermined interval line number is 0 is more than predetermined number threshold value；
If described first numerical value and described second value are cycle and intermittent occurring it is determined that in the range of right boundary
Article 2 safety line feature can be with described template matching；
If described first numerical value and described second value are not cycle and intermittent occurring it is determined that in right boundary scope
Interior Article 2 safety line feature can not be with described template matching.
Specifically, Article 2 safety line is the most intuitively characterized as that black surround is alternate, and the length of its black patch is big with the length of white block
Little is fixing, and we can choose template and it is detected according to this feature.According to template (0,24,47,72,92,
120,141,164,188 }, from top to bottom with respect to first red line position as shown in figure 3, its intercharacter segmentation relative position
It is fixing for putting), to each feature locations, the feature of certain row under calculating thereon.
If certain line number black picture element points are more than certain threshold value up and down, it is designated as 1.
If certain line number black points are less than certain threshold value up and down, it is designated as 0.
Here the selection of threshold value could be arranged to the half of right boundary.
As shown in figure 3, the pattern of this figure is { 1,0,1,0,1,0,1,0,1 }.
Step 104, if the Article 2 safety line feature in the range of right boundary can be with described template matching it is determined that institute
It is true for stating new edition RMB.
Specifically, to calculate row and, moving die plate from top to bottom, check for pattern be 1,0,1,0,1,0,
1,0,1 } feature, if existing, false distinguishing is correct.
The embodiment of the present invention provides a kind of method of detection new edition RMB, intercepts treating in new edition RMB to be detected and knows
Other region, described region to be identified includes the region of Article 2 safety line feature；Region to described Article 2 safety line feature
Carry out binary conversion treatment；According to described Article 2 safety line feature calculation right boundary, and to second in the range of right boundary
Bar safety line feature carries out template matching；If the Article 2 safety line feature in the range of right boundary can be with described template
Join it is determined that described new edition RMB is true.Inventive algorithm complexity is low, and according to the algorithm of feature templates coupling, the time imitates
Rate is high；Ratio setting according to shared by black patch reality for the selection of binary-state threshold, binaryzation effect is good, and is difficult to be done by noise
Disturb；Its chequered with black and white feature is detected according to the method for template matching, accuracy rate is high.
With reference to Fig. 4, Fig. 4 is that a kind of functional module of the device of detection new edition RMB provided in an embodiment of the present invention is illustrated
Figure.
As shown in figure 4, described device includes：
Interception module 401, for intercepting the region to be identified in new edition RMB to be detected, described region to be identified includes
The region of Article 2 safety line feature；
Binary conversion treatment module 402, for carrying out binary conversion treatment to the region of described Article 2 safety line feature；
Preferably, described binary conversion treatment module 402, specifically for：
Pixel values in regions distribution histogram after statistics binary conversion treatment；
Obtain the pixel number more than or equal to presetted pixel value, when pixel number with to exceed described pixel Distribution value straight
The all pixels point predetermined threshold value of square in figure, then described pixel value is binary-state threshold；
Will be greater than being entered as 255 equal to the pixel of described binary-state threshold, by the pixel less than described binary-state threshold
The point of point threshold value is entered as 0.
Computing module 403, for according to described Article 2 safety line feature calculation right boundary；
Preferably, described computing module 403, specifically for：
Calculate row and, and obtain the position at the maximum row of change and place, right boundary determined according to described position.
Matching module 404, for carrying out template matching to the Article 2 safety line feature in the range of right boundary；
Preferably, described matching module 404, specifically for：
Determine the safety line feature whether described Article 2 safety line feature meets in template, described safety line is characterized as week
Phase and intermittent occur in default up-downgoing and are spaced line number and be more than or equal to the pixel of described binary-state threshold and described default
Up-downgoing is spaced the pixel that line number is less than described binary-state threshold.
Preferably, described matching module 404, also particularly useful for：
Obtain the pixel number that pixel in described default upper and lower spaced rows number is not 0 and be more than predetermined number threshold value
First numerical value；
Obtain the second value that the pixel number that pixel in predetermined interval line number is 0 is more than predetermined number threshold value；
If described first numerical value and described second value are cycle and intermittent occurring it is determined that in the range of right boundary
Article 2 safety line feature can be with described template matching；
If described first numerical value and described second value are not cycle and intermittent occurring it is determined that in right boundary scope
Interior Article 2 safety line feature can not be with described template matching.
Determining module 405, if for the Article 2 safety line feature in the range of right boundary can with described template matching,
Then determine that described new edition RMB is true.
The embodiment of the present invention provides a kind of device of detection new edition RMB, intercepts treating in new edition RMB to be detected
Identification region, described region to be identified includes the region of Article 2 safety line feature；Area to described Article 2 safety line feature
Domain carries out binary conversion treatment；According to described Article 2 safety line feature calculation right boundary, and in the range of right boundary
Article two, safety line feature carries out template matching；If the Article 2 safety line feature in the range of right boundary can be with described template
Join it is determined that described new edition RMB is true.Inventive algorithm complexity is low, and according to the algorithm of feature templates coupling, the time imitates
Rate is high；Ratio setting according to shared by black patch reality for the selection of binary-state threshold, binaryzation effect is good, and is difficult to be done by noise
Disturb；Its chequered with black and white feature is detected according to the method for template matching, accuracy rate is high.
Describe the know-why of the embodiment of the present invention above in association with specific embodiment.These descriptions are intended merely to explain this
The principle of inventive embodiments, and the restriction to embodiment of the present invention protection domain can not be construed to by any way.Based on herein
Explanation, those skilled in the art do not need to pay performing creative labour and can associate the other concrete of the embodiment of the present invention
Embodiment, these modes fall within the protection domain of the embodiment of the present invention.
Claims (10)
1. a kind of method of detection new edition RMB is it is characterised in that methods described includes：
Intercept the region to be identified in new edition RMB to be detected, described region to be identified includes the area of Article 2 safety line feature
Domain；
Binary conversion treatment is carried out to the region of described Article 2 safety line feature；
According to described Article 2 safety line feature calculation right boundary, and to the Article 2 safety line feature in the range of right boundary
Carry out template matching；
If the Article 2 safety line feature in the range of right boundary can be with described template matching it is determined that described new edition RMB
It is true.
2. method according to claim 1 is it is characterised in that the described region to described Article 2 safety line feature is carried out
Binary conversion treatment, including：
Pixel values in regions distribution histogram after statistics binary conversion treatment；
Obtain the pixel number more than or equal to presetted pixel value, when pixel number and exceed described pixel value distribution histogram
In all pixels point predetermined threshold value, then described pixel value be binary-state threshold；
Will be greater than being entered as 255 equal to the pixel of described binary-state threshold, by the pixel threshold less than described binary-state threshold
The point of value is entered as 0.
3. method according to claim 1 it is characterised in that described according to described Article 2 safety line feature calculation about
Border, including：
Calculate row and, and obtain the position at the maximum row of change and place, right boundary determined according to described position.
4. the method according to claims 1 to 3 any one it is characterised in that described in the range of right boundary
Article two, safety line feature carries out template matching, including：
Determine whether described Article 2 safety line feature meets the safety line feature in template；Described safety line be characterized as the cycle and
Intermittent occurs in default up-downgoing and is spaced line number more than or equal to the pixel of described binary-state threshold with described default upper and lower
Between-line spacing line number is less than the pixel of described binary-state threshold.
5. method according to claim 4 is it is characterised in that the described Article 2 safety line in the range of right boundary is special
Levy and carry out template matching, including：
Obtain the pixel number that pixel in described default upper and lower spaced rows number is not 0 and be more than the first of predetermined number threshold value
Numerical value；
Obtain the second value that the pixel number that pixel in predetermined interval line number is 0 is more than predetermined number threshold value；
If described first numerical value and described second value are cycle and intermittent occur it is determined that in the range of right boundary the
Article two, safety line feature can be with described template matching；
If described first numerical value and described second value are not cycle and intermittent occurring it is determined that in the range of right boundary
Article 2 safety line feature can not be with described template matching.
6. a kind of device of detection new edition RMB is it is characterised in that described device includes：
Interception module, for intercepting the region to be identified in new edition RMB to be detected, described region to be identified includes Article 2
The region of safety line feature；
Binary conversion treatment module, for carrying out binary conversion treatment to the region of described Article 2 safety line feature；
Computing module, for according to described Article 2 safety line feature calculation right boundary；
Matching module, for carrying out template matching to the Article 2 safety line feature in the range of right boundary；
Determining module, if for the Article 2 safety line feature in the range of right boundary can with described template matching it is determined that
Described new edition RMB is true.
7. device according to claim 6 is it is characterised in that described binary conversion treatment module, specifically for：
Pixel values in regions distribution histogram after statistics binary conversion treatment；
Obtain the pixel number more than or equal to presetted pixel value, when pixel number and exceed described pixel value distribution histogram
In all pixels point predetermined threshold value, then described pixel value be binary-state threshold；
Will be greater than being entered as 255 equal to the pixel of described binary-state threshold, by the pixel threshold less than described binary-state threshold
The point of value is entered as 0.
8. device according to claim 6 is it is characterised in that described computing module, specifically for：
Calculate row and, and obtain the position at the maximum row of change and place, right boundary determined according to described position.
9. the device according to claim 6 to 8 any one is it is characterised in that described matching module, specifically for：
Determine the safety line feature whether described Article 2 safety line feature meets in template, described safety line be characterized as the cycle and
Intermittent occurs in default up-downgoing and is spaced line number more than or equal to the pixel of described binary-state threshold with described default upper and lower
Between-line spacing line number is less than the pixel of described binary-state threshold.
10. device according to claim 9 is it is characterised in that described matching module, also particularly useful for：
Obtain the pixel number that pixel in described default upper and lower spaced rows number is not 0 and be more than the first of predetermined number threshold value
Numerical value；
Obtain the second value that the pixel number that pixel in predetermined interval line number is 0 is more than predetermined number threshold value；
If described first numerical value and described second value are cycle and intermittent occur it is determined that in the range of right boundary the
Article two, safety line feature can be with described template matching；
If described first numerical value and described second value are not cycle and intermittent occurring it is determined that in the range of right boundary
Article 2 safety line feature can not be with described template matching.
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| CN201610812485.3A CN106408748A (en) | 2016-09-08 | 2016-09-08 | Method and apparatus for checking new edition RMB banknote |
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| CN201610812485.3A CN106408748A (en) | 2016-09-08 | 2016-09-08 | Method and apparatus for checking new edition RMB banknote |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109448219A (en) * | 2018-10-25 | 2019-03-08 | 深圳怡化电脑股份有限公司 | Image matching method, device, bill identifier and computer readable storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105243730A (en) * | 2015-10-28 | 2016-01-13 | 深圳怡化电脑股份有限公司 | Banknote identification method and system |
| CN105719386A (en) * | 2016-01-18 | 2016-06-29 | 新达通科技股份有限公司 | Paper currency identification method and device based on optically-variable hollowed windowing security line |
-
2016
- 2016-09-08 CN CN201610812485.3A patent/CN106408748A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105243730A (en) * | 2015-10-28 | 2016-01-13 | 深圳怡化电脑股份有限公司 | Banknote identification method and system |
| CN105719386A (en) * | 2016-01-18 | 2016-06-29 | 新达通科技股份有限公司 | Paper currency identification method and device based on optically-variable hollowed windowing security line |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109448219A (en) * | 2018-10-25 | 2019-03-08 | 深圳怡化电脑股份有限公司 | Image matching method, device, bill identifier and computer readable storage medium |
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