CN106355743A - Banknote version identification method and device - Google Patents
Banknote version identification method and device Download PDFInfo
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- CN106355743A CN106355743A CN201510412425.8A CN201510412425A CN106355743A CN 106355743 A CN106355743 A CN 106355743A CN 201510412425 A CN201510412425 A CN 201510412425A CN 106355743 A CN106355743 A CN 106355743A
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Abstract
The invention discloses a banknote version identification method and device. The method includes the steps: acquiring an image corresponding to the version making year of a banknote; determining the occupied width of the version making year in the image; judging whether the width of a third character in the version making year is smaller than that of a preset character or not if the occupied width of the version making year is larger than that of a preset image; determining that the version making year of the banknote is 2015. The width of the preset image corresponds to a character string 1999, and the width of the preset character corresponds to a character 0. The 2015 version RMB can be identified.
Description
Technical field
The present embodiments relate to currency examination technology, the version recognition methodss of more particularly, to a kind of bank note and device.
Background technology
With the continuous renewal of note-issue's version, the version circulating on the market is consequently increased, including mesh
Front circulation more 1999 editions and 2005 editions RMB.In order to adapt to the needs of economic development, further
Improve the monetary system of China, improve the anti-counterfeiting performance of RMB, People's Bank of China discloses 2015 editions people
People's coin.
After the RMB of 2015 editions is come out, financial machine and tool needs to 1999 editions, 2005 editions and 2015 editions
RMB is identified, to carry out subsequent operation (such as the true and false of bank note being identified).However, it is existing
Equipment only can be identified to the RMB of 1999 editions and 2005 editions it is impossible to will identify that the people of 2015 editions
People's coin.
Content of the invention
The present invention provides a kind of version recognition methodss and the device of bank note, to realize 2015 editions RMB are carried out
Identification.
In a first aspect, embodiments providing a kind of version recognition methodss of bank note, comprising:
Obtain described bank note plate-making time corresponding image；
Determine the described plate-making width that takies in described image of time；
If the width that the described plate-making time takies is more than pre-set image width, judge in the described plate-making time
Whether the width of the 3rd character is less than preset characters width, and described pre-set image width is that character string 1999 is right
The width answered, described preset characters width is the corresponding width of character 0；
If less than described preset characters width it is determined that the plate-making time of described bank note is 2015.
Second aspect, the embodiment of the present invention additionally provides a kind of version recognition device of bank note, comprising:
Plate-making time image acquisition unit, for obtaining described bank note plate-making time corresponding image；
Width determining unit, for determining that the described plate-making time obtains in described plate-making time image acquisition unit
Described image in take width；
Character duration judging unit, the width that the described plate-making time for obtaining when width determining unit takies
During more than pre-set image width, judge whether the width of the 3rd character in the described plate-making time is less than predetermined word
Symbol width, described pre-set image width is the corresponding width of character string 1999, and described preset characters width is word
Accord with 0 corresponding width；
Plate-making time determining unit, for obtaining the in the described plate-making time when described character duration judging unit
When the width of three characters is less than described preset characters width, determine that the plate-making time of described bank note is 2015.
The present invention determines the width of plate-making time occupancy in plate-making time corresponding image first, secondly by
This width is compared with pre-set image width (the corresponding width of character string 1999).Due to 2005 Hes
The overall width that 2015 overall width is more than 1999, if therefore comparative result is more than determining plate-making
Time is 2005 or 2015.Judge whether the width of the 3rd character in the plate-making time is less than predetermined word again
Symbol width (the corresponding width of character 0).Because the difference of 2005 and 2015 width is the 3rd word
Symbol, therefore by comparing the width of the 3rd character it may be determined that making a plate the time.Therefore, when in the plate-making time
When the width of the 3rd character is less than described preset characters width, determine that the plate-making time is 2015, it is right to realize
The identification of 2015 editions RMB.
Brief description
Fig. 1 is the flow chart of the version recognition methodss of one of the embodiment of the present invention one bank note；
Fig. 2 is the flow chart of the version recognition methodss of first bank note in the embodiment of the present invention two；
Fig. 3 is the flow chart of the version recognition methodss of second bank note in the embodiment of the present invention two；
Fig. 4 is the flow chart of the version recognition methodss of the 3rd bank note in the embodiment of the present invention two；
Fig. 5 is the flow chart of the version recognition methodss of the 4th bank note in the embodiment of the present invention two；
Fig. 6 is the flow chart of the version recognition methodss of the 5th bank note in the embodiment of the present invention two；
Fig. 7 is the bank note coordinate schematic diagram in the embodiment of the present invention two；
Fig. 8 is that the target image in the embodiment of the present invention two cuts effect diagram；
Fig. 9 is the row projection result in the embodiment of the present invention two；
Figure 10 is the bianry image schematic diagram in the embodiment of the present invention two；
Figure 11 is the structural representation of the version recognition device of first bank note in the embodiment of the present invention three；
Figure 12 is the structural representation of the version recognition device of second bank note in the embodiment of the present invention three；
Figure 13 is the structural representation of the version recognition device of the 3rd bank note in the embodiment of the present invention three；
Figure 14 is the structural representation of the version recognition device of the 4th bank note in the embodiment of the present invention three.
Specific embodiment
The present invention is described in further detail for set drawings and Examples below.It is understood that this
The described specific embodiment in place is used only for explaining the present invention, rather than limitation of the invention.In addition also need
It is noted that for the ease of description, illustrate only part related to the present invention in accompanying drawing and not all knot
Structure.
Embodiment one
The flow chart of the version recognition methodss of the bank note that Fig. 1 provides for the embodiment of the present invention one, the present embodiment can
It is applied to the situation that 1999 editions, 2005 editions and 2015 editions RMB are identified, the method can be by gold
Melt equipment to execute, financial machine and tool such as paper currency sorter, anti-falsity banknote accounter, cash inspecting machine etc., the method is concrete
Comprise the steps:
Plate-making time corresponding image in step 110, acquisition bank note.
Wherein, the described plate-making time is the note issue time, such as " 1999 " " 2005 " " 2015 ".This
Outward, the plate-making time may also include character year, such as " 1999 " " 2005 " " 2015 ".
Bank note has front and back, and bank note front is the face being printed with figure painting picture, and the back side is in addition to front
Another side, the back side is printed with landscape painting.The plate-making time of bank note is located at the bank note back side, by carrying on the back to bank note
Face is scanned, and can get the image at the bank note back side.The bank note of same face amount different editions, it is made a plate the time
At same location, the position that therefore can refer to the plate-making time in existing issued bank note is carried on the back from bank note
Plate-making time corresponding image is obtained in the image in face.
The width that step 120, determination plate-making time take in the picture.
The width that the plate-making time takies in the picture can obtain plate-making by the method for graphical analyses from image
Time corresponding positional information, determines the width of plate-making time occupancy according to positional information.
The width that time takies if step 130 is made a plate is more than pre-set image width, judges the plate-making time
In the width of the 3rd character whether be less than preset characters width.
Wherein, described pre-set image width is the corresponding width of character string 1999, and described preset characters width is
The corresponding width of character 0.
The width shared by the plate-making time of 1999 editions can obtain in current paper money in circulation.Preset characters width
Can refer in 2005 millboard coin of current circulation, the printing width of character 0.The unit of width in the present embodiment
Can by mm, be alternatively the points (dots per inch, dpi) that printed of per inch.Wherein, dpi
Can be used for weighing the resolution using during scanning device acquisition banknote image, by the bank note of this resolution scan
The least unit of figure is 1dpi.As a kind of citing, pre-set image width is 90dpi；Preset characters width
Spend for 10dpi.
Because the width that character 1 takies is less than the width that character 2 takies, and the character of continuous arrangement needs to protect
The space demonstrate,proved shared by each character is identical, and the width shared by therefore 1xxx is less than the width shared by 2xxx
Degree.
If the width in the plate-making time of current bank note is more than 1999 corresponding pre-set image width, can determine that
The plate-making time of current bank note is 2005 or 2015.Difference due to 2005 and 2015 is the 3rd word
Symbol, therefore judges whether the width of plate-making the 3rd character of time is less than the corresponding preset characters width of character 0.
Step 140, if less than preset characters width it is determined that the plate-making time of bank note be 2015.
The width of plate-making the 3rd character of time is less than the corresponding preset characters width of character 0, then can determine that system
The version time is 2015.
The present invention determines the width of plate-making time occupancy in plate-making time corresponding image first, secondly by
This width is compared with pre-set image width (the corresponding width of character string 1999).Due to 2005 Hes
The overall width that 2015 overall width is more than 1999, if therefore comparative result is more than determining plate-making
Time is 2005 or 2015.Judge whether the width of the 3rd character in the plate-making time is less than predetermined word again
Symbol width (the corresponding width of character 0).Because the difference of 2005 and 2015 width is the 3rd word
Symbol, therefore by comparing the width of the 3rd character it may be determined that making a plate the time.Therefore, when in the plate-making time
When the width of the 3rd character is less than described preset characters width, determine that the plate-making time is 2015, it is right to realize
The identification of 2015 editions RMB.
Embodiment two
Embodiments provide a kind of version recognition methodss of bank note, as to embodiment one specifically
Bright, as shown in Fig. 2 time corresponding image of making a plate in step 110, the described bank note of acquisition, can pass through following
Mode is implemented:
Step 101, the gray-scale maps at the acquisition bank note back side.
The gray-scale maps at the bank note back side can obtain scheme by the gray-scale maps providing in prior art and obtain, herein not
Repeat.As a kind of citing, can obtain by way of black and white scans.When being scanned, use
The resolution of 200*150dpi (i.e. longitudinal 150dpi, horizontal 200dpi) is scanned.In this resolution
Under, the gross area of hundred yuan of bills of 2005 editions is about 1282*450dpi.
Step 102, in the gray-scale maps at the bank note back side, cut target image according to preset coordinate region.
Wherein, described target image includes described plate-making time corresponding image.
As a kind of implementation, preset coordinate region is horizontal x=[750-855]；Longitudinal y=[380-410].
Preset coordinate region can be used for representing that in 1999 editions or 2005 editions RMB, plate-making time corresponding coordinate is interval.
Step 103, each traveling every trade projection to target image, obtain row projection result set.
Wherein, each the row projection result in described row projection result set and each in described target image
Line number corresponds.
In gray-scale maps, the gray value of each pixel is 0 to 255, and white is 255, and black is 0.Gray value
Refer to the color depth at black white image midpoint.When entering every trade projection, the gray value of each pixel in certain row is entered
Row is cumulative, obtains this row corresponding row projection result.After traveling every trade projection each in target image, obtain
N row projection result, n is total line number of target image.
Step 104, the numerical values recited according to each row projection in row projection result set, determine the plate-making time
Corresponding line number set.
Wherein, the corresponding projection result of any row in described line number set is less than the corresponding row of arbitrary remaining row
Projection result, the row in addition to described line number set in target image described in remaining behavior described.
Because the font color in time of making a plate is partially black compared with background, therefore it is printed with the row of plate-making time word
Row projection result be less than and only print the row projection result of the row having powerful connections.The line number being taken according to the plate-making time
Amount m, exceeds relatively low m row so that the going of any a line in m row projects knot from projection result set
Fruit is respectively less than the row projection result of any a line in remaining n-m row.The line number composition line number of the m row obtaining
Set.
Step 105, by corresponding for line number set image be defined as make a plate time corresponding image.
The technical scheme that the present embodiment provides, will can accurately find the plate-making time from the gray-scale maps of bank note
Corresponding image, improves the accuracy of version identification.
Further, before entering every trade projection, binary conversion treatment can be carried out to the gray-scale maps at the bank note back side, such as
This reduces the amount of calculation of row projection, reduces and calculates the memory headroom that row projection takies.
The embodiment of the present invention additionally provides a kind of version recognition methodss of bank note, as the tool to above-described embodiment
Body illustrates, as shown in figure 3, the width that step 120, determination plate-making time take in described image, can
Implemented by following manner:
Step 201, to plate-making time corresponding image enter ranks projection, obtain first row projection result set.
Wherein, in each the row projection result in described first row projection result set and described target image
Each row number corresponds.
Because the font color in time of making a plate is partially black compared with background, therefore it is printed with the row of plate-making time word
Row projection result be less than and only print the row projection result of the row having powerful connections.
Step 202, the numerical values recited according to each row projection in first row projection result set, determine plate-making
Time corresponding first row number set.
In row projection set, row projection value is less, then partially black pixel in this row is more, is probably more
The row that the plate-making time is located.Therefore, by the less q of value in first row projection result set (common p row)
The row number of row, is defined as the first row number set.The row making any string in remaining columns (p-q row) are thrown
Shadow result is all higher than the row projection result of arbitrarily string in q row.
Step 203, according to the row number threshold value in the first row number set, determine that the plate-making time takies in the picture
Width.
Wherein, row number threshold value includes minimum threshold and max-thresholds.Minimum row are searched from the first row number set
Number as minimum threshold, search maximum row number from the first row number set as max-thresholds.By max-thresholds
It is defined as the width that takies in the picture of time of making a plate with the difference of minimum threshold.
The technical scheme that the present embodiment provides, can determine the width in plate-making time by the value of row projection result
Degree, improves the accuracy of version identification.
Further, the embodiment of the present invention additionally provides the version recognition methodss of bank note, as to above-mentioned enforcement
Example illustrate, as shown in figure 4, step 201, to plate-making time corresponding image enter ranks projection
Before, comprising:
Step 200, to plate-making time corresponding image carry out binary conversion treatment, obtain make a plate the time corresponding
Bianry image.
As a kind of implementation, carry out binary conversion treatment using maximum variance between clusters (otsu algorithm).
After carrying out binary conversion treatment, in image, the corresponding value of pixel will change into 0 or 1 from the gray value of 0-255
Value.Now, different from the value mode of gray value, in bianry image, 0 represents white, and 1 represents black
Color.
Accordingly, step 201, ranks projection is entered to described plate-making time corresponding image, also can achieve and be:
Step 201 ', to plate-making time corresponding bianry image enter ranks projection, obtain secondary series projection knot
Fruit is gathered.
Step 202 ', according in secondary series projection result set each row projection numerical values recited, determine system
Version time corresponding second row number set.
In secondary series projection set, row projection value is bigger, then partially black pixel in this row is more, more may be used
Can be the row that the plate-making time is located.Therefore, will be larger for value in secondary series projection result set (common p row)
Q row row number, be defined as the second row number set.Make any string in remaining columns (p-q row)
Row projection result is respectively less than the row projection result of arbitrarily string in q row.
Step 203 ', according to the row number threshold value in the second row number set, determine that the plate-making time accounts in the picture
Width.
Wherein, row number threshold value includes minimum threshold and max-thresholds.Minimum row are searched from the second row number set
Number as minimum threshold, search maximum row number from the second row number set as max-thresholds.By max-thresholds
It is defined as the width that takies in the picture of time of making a plate with the difference of minimum threshold.
The technical scheme that the present embodiment provides, by binary conversion treatment, can obtain relatively sharp image.
Because bianry image has less noise spot with than gray-scale maps, therefore can improve and determine plate-making time width
Accuracy.
The embodiment of the present invention additionally provides the version recognition methodss of bank note, as to above-described embodiment specifically
Bright, as shown in figure 5, after the width that step 120, determination plate-making time take in the picture, also wrapping
Include:
The width that time takies if step 150 is made a plate is less than or equal to pre-set image width it is determined that bank note
The plate-making time be 1999.
Step 130, in the time that judges to make a plate the 3rd character width whether less than preset characters width it
Afterwards, also include:
In the time if step 160 is made a plate, the width of the 3rd character is more than or equal to preset characters width,
Determine bank note the plate-making time be 2005.
The technical scheme that the present embodiment provides, can be to 1999 editions, 2005 editions, 2015 editions three versions
Bank note is identified, and identification process can be completed by an identification process, improves recognition efficiency.
It should be noted that when the plate-making time of bank note being " 1999 " " 2005 " " 2015 ",
Because the height of " year " word is identical with other fonts, therefore plate-making time corresponding row projection result with pure
The difference of the projection result of background will increase, and then part that can be removed noise or the impact being stained.
Below by a specifically used scene, above-described embodiment is specifically described, as shown in Figure 6:
Step 301, in the gray-scale maps at the bank note back side, cut target image according to preset coordinate region.
Obtain the gray-scale maps at the bank note back side according to the resolution of 200*150dpi, the total size of this gray-scale map is
1282*450dpi, as shown in fig. 7, the top left co-ordinate of this gray-scale map is (0,0), bottom right angular coordinate is
(1282,450).Cutting this preset coordinate region is x=[750-855]；Longitudinal y=[380-410].
In order to ensure target image can comprise make a plate the time, when being cut, the area of target image is big
The area taking in the plate-making time.Assume that the plate-making time (also can be replaced 1999 or 2015 for 2005
Year), the magnitude relationship in the frame of the target image cutting and plate-making time is as shown in figure 8, make a plate the time
Surrounding all leaves certain vacant amount.
Step 302, each traveling every trade projection to target image, obtain row projection result set.
As shown in figure 9, wherein vertical coordinate represents row projection result, abscissa represents line number to row projection result.
Step 303, the numerical values recited according to each row projection in row projection result set, determine the plate-making time
Corresponding line number set.
In Fig. 9, less 15 row of row projection result are defined as line number set.The row projection result of remaining row
Row projection result more than a line any in this 15 row.In Fig. 8, determine that line number collection is combined into the 13rd row to
27 row.
Step 304, by corresponding for line number set image be defined as make a plate time corresponding image.
Step 305, to plate-making time corresponding image carry out binary conversion treatment, obtain make a plate the time corresponding
Bianry image.
The bianry image obtaining as shown in Figure 10, does not have vacant amount above and below the plate-making time in this image,
The right and left still suffers from vacant amount.
Step 306, to plate-making time corresponding bianry image enter ranks projection, obtain secondary series projection result
Set.
Step 307, the numerical values recited according to each row projection in secondary series projection result set, determine plate-making
Time corresponding second row number set.
After binaryzation, in order to avoid the interference of noise spot in bianry image, row projection result is more than 2 row
Put in row number set.
Step 308, according to the row number threshold value in the second row number set, determine that the plate-making time takies in the picture
Width.
Whether the width that step 309, the time that judges to make a plate take is more than pre-set image width, if greater than then
Execution step 310, otherwise execution step 311.
Step 310, in the time that judges to make a plate, whether the width of the 3rd character is less than preset characters width.As
Fruit is less than then execution step 312, otherwise execution step 313.
Step 311, determine bank note the plate-making time be 1999.
Step 312, determine bank note the plate-making time be 2015.
Step 313, determine bank note the plate-making time be 2005.
Embodiment three
A kind of version recognition device of bank note of the embodiment of the present invention, the method for realizing above-described embodiment offer,
Shown device is located in financial machine and tool, and as shown in figure 11, shown device includes, comprising:
Plate-making time image acquisition unit 11, for obtaining described bank note plate-making time corresponding image；
Width determining unit 12, for determining the described plate-making time in described plate-making time image acquisition unit 11
The width taking in the described image obtaining；
Character duration judging unit 13, the described plate-making time for obtaining when width determining unit 12 takies
Width when being more than pre-set image width, judge in the described time of making a plate, whether the width of the 3rd character is less than
Preset characters width, described pre-set image width is the corresponding width of character string 1999, described preset characters width
Spend for the corresponding width of character 0；
Plate-making time determining unit 14, for obtaining described plate-making year when described character duration judging unit 13
When the width of the 3rd character is less than described preset characters width in part, determine that the plate-making time of described bank note is
2015.
Further, as shown in figure 12, described plate-making time image acquisition unit 11, comprising:
Gray-scale maps obtain subelement 111, for obtaining the gray-scale maps at the described bank note back side；
Target image cuts subelement 112, for obtaining described in subelement 111 acquisition in described gray-scale maps
Target image is cut according to preset coordinate region, described target image includes described in the gray-scale maps at the bank note back side
Plate-making time corresponding image；
Row projection subelement 113, for cutting the described target that subelement 112 cuts to described target image
Each traveling every trade projection of image, obtains row projection result set, each in described row projection result set
Row projection result is corresponded with each line number in described target image；
Plate-making time line number determination subelement 114, for projecting, according to described row, the institute that subelement 113 obtains
State the numerical values recited of each row projection in row projection result set, determine described plate-making time corresponding line number collection
Close, the corresponding projection result of any row in described line number set is less than arbitrary remaining row corresponding row projection knot
Really, the row in addition to described line number set in target image described in remaining behavior described；
Plate-making time image determination subelement 115, for by described plate-making time line number determination subelement 114
The corresponding image of described line number set determining is defined as described plate-making time corresponding image.
Further, as shown in figure 13, described width determining unit 12, comprising:
Row projection subelement 121, for entering ranks projection to described plate-making time corresponding image, obtains the
String projection result set, each the row projection result in described first row projection result set and described target
Each row number in image corresponds；
Plate-making time row number determination subelement 122, for the institute being obtained according to described row projection subelement 121
State in first row projection result set the numerical values recited of each row projection, determine the described plate-making time corresponding the
One row number set；
Width determination subelement 123, for determine according to described plate-making time row number determination subelement 122
Row number threshold value in described first row number set, determines the described plate-making width that takies in described image of time.
Further, as shown in figure 14, described width determining unit 12 also includes:
Binary conversion treatment subelement 124, for binary conversion treatment is carried out to described plate-making time corresponding image,
Obtain described plate-making time corresponding bianry image；
Accordingly, described row projection subelement 121 is additionally operable to: to described plate-making time corresponding bianry image
Enter ranks projection, obtain secondary series projection result set.
Described plate-making time row number determination subelement 122 is additionally operable to: according to described secondary series projection result set
In each row projection numerical values recited, determine described plate-making time corresponding second row number set；
Described width determination subelement 123 is additionally operable to: according to the row number threshold value in described second row number set,
Determine the described plate-making width that takies in described image of time
Further, described plate-making time determining unit 14 is additionally operable to:
If the width that the described plate-making time takies is less than or equal to pre-set image width it is determined that described bank note
The plate-making time is 1999；
If the width that the described plate-making time takies is less than or equal to pre-set image width, and in the described plate-making time
The width of the 3rd character is more than or equal to described preset characters width it is determined that the plate-making time of described bank note is
2005.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.Those skilled in the art
It will be appreciated that the invention is not restricted to specific embodiment described here, can enter for a person skilled in the art
Row various obvious changes, readjust and substitute without departing from protection scope of the present invention.Therefore, though
So by above example, the present invention is described in further detail, but the present invention be not limited only to
Upper embodiment, without departing from the inventive concept, can also include other Equivalent embodiments more,
And the scope of the present invention is determined by scope of the appended claims.
Claims (10)
1. a kind of version recognition methodss of bank note are it is characterised in that include:
Obtain described bank note plate-making time corresponding image；
Determine the described plate-making width that takies in described image of time；
If the width that the described plate-making time takies is more than pre-set image width, judge in the described plate-making time
Whether the width of the 3rd character is less than preset characters width, and described pre-set image width is that character string 1999 is right
The width answered, described preset characters width is the corresponding width of character 0；
If less than described preset characters width it is determined that the plate-making time of described bank note is 2015.
2. the version recognition methodss of bank note according to claim 1 are it is characterised in that described acquisition institute
State plate-making time corresponding image in bank note, comprising:
Obtain the gray-scale maps at the described bank note back side；
Cut target image according to preset coordinate region in the gray-scale maps at the described bank note back side, described target figure
As including described plate-making time corresponding image；
Each traveling every trade projection to described target image, obtains row projection result set, described row projection knot
Each row projection result during fruit is gathered is corresponded with each line number in described target image；
According to the numerical values recited of each row projection in described row projection result set, determine the described plate-making time pair
The line number set answered, the corresponding projection result of any row in described line number set is less than arbitrary remaining row and corresponds to
Row projection result, the row in addition to described line number set in target image described in remaining behavior described；
Corresponding for described line number set image is defined as described plate-making time corresponding image.
3. the version recognition methodss of bank note according to claim 2 are it is characterised in that described determination institute
State the plate-making width that takies in described image of time, comprising:
Ranks projection is entered to described plate-making time corresponding image, obtains first row projection result set, described
A pair of each row number 1 in each row projection result in first row projection result set and described target image
Should；
According to the numerical values recited of each row projection in described first row projection result set, determine described plate-making year
The corresponding first row number set of part；
According to the row number threshold value in described first row number set, determine that the described plate-making time accounts in described image
Width.
4. the version recognition methodss of bank note according to claim 3 are it is characterised in that described to institute
State plate-making time corresponding image enter ranks projection before, comprising:
Binary conversion treatment is carried out to described plate-making time corresponding image, obtains the described plate-making time corresponding two
Value image；
Accordingly, described to described plate-making time corresponding image enter ranks projection, comprising:
Ranks projection is entered to described plate-making time corresponding bianry image, obtains secondary series projection result set；
Accordingly, the described numerical values recited according to each row projection in described first row projection result set, really
Fixed described plate-making time corresponding first row number set, comprising:
According to the numerical values recited of each row projection in described secondary series projection result set, determine described plate-making year
The corresponding second row number set of part；
Accordingly, described according to the row number threshold value in described first row number set, determine described plate-making the time exist
The width taking in described image, comprising:
According to the row number threshold value in described second row number set, determine that the described plate-making time accounts in described image
Width.
5. bank note according to any one of claim 1 to 4 version recognition methodss it is characterised in that
After determining the width that the described plate-making time takies in described image, also include:
If the width that the described plate-making time takies is less than or equal to pre-set image width it is determined that described bank note
The plate-making time is 1999；
After in judging the described plate-making time, whether the width of the 3rd character is less than preset characters width, also
Including:
If the width of the 3rd character is more than or equal to described preset characters width, really in the described plate-making time
The plate-making time of fixed described bank note is 2005.
6. a kind of version recognition device of bank note is it is characterised in that include:
Plate-making time image acquisition unit, for obtaining described bank note plate-making time corresponding image；
Width determining unit, for determining that the described plate-making time obtains in described plate-making time image acquisition unit
Described image in take width；
Character duration judging unit, the width that the described plate-making time for obtaining when width determining unit takies
During more than pre-set image width, judge whether the width of the 3rd character in the described plate-making time is less than predetermined word
Symbol width, described pre-set image width is the corresponding width of character string 1999, and described preset characters width is word
Accord with 0 corresponding width；
Plate-making time determining unit, for obtaining the in the described plate-making time when described character duration judging unit
When the width of three characters is less than described preset characters width, determine that the plate-making time of described bank note is 2015.
7. the version recognition device of bank note according to claim 6 is it is characterised in that described plate-making year
Part image acquisition unit, comprising:
Gray-scale maps obtain subelement, for obtaining the gray-scale maps at the described bank note back side；
Target image cuts subelement, for obtaining, in described gray-scale maps, the described bank note back side that subelement obtains
Gray-scale maps in cut target image according to preset coordinate region, described target image includes the described plate-making time
Corresponding image；
Row projection subelement, for cutting each of the described target image that subelement cuts to described target image
Traveling every trade projects, and obtains row projection result set, each row projection knot in described row projection result set
Fruit is corresponded with each line number in described target image；
Plate-making time line number determination subelement, for projecting, according to described row, the described row projection that subelement obtains
The numerical values recited of each row projection in results set, determines described plate-making time corresponding line number set, described
The corresponding projection result of any row in line number set is less than arbitrary remaining row corresponding row projection result, described
Row in addition to described line number set in target image described in remaining behavior；
Plate-making time image determination subelement, for the institute determining described plate-making time line number determination subelement
State the corresponding image of line number set and be defined as described plate-making time corresponding image.
8. the version recognition device of bank note according to claim 7 is it is characterised in that described width is true
Order unit, comprising:
Row projection subelement, for entering ranks projection to described plate-making time corresponding image, obtains first row
Projection result set, each the row projection result in described first row projection result set and described target image
In each row number correspond；
Plate-making time row number determination subelement, for the described first row being obtained according to described row projection subelement
The numerical values recited of each row projection in projection result set, determines described plate-making time corresponding first row number collection
Close；
Width determination subelement, for described first according to described plate-making time row number determination subelement determination
Row number threshold value in row number set, determines the described plate-making width that takies in described image of time.
9. the version recognition device of bank note according to claim 8 is it is characterised in that described width is true
Order unit also includes:
Binary conversion treatment subelement, for carrying out binary conversion treatment to described plate-making time corresponding image, obtains
To described plate-making time corresponding bianry image；
Accordingly, described row projection subelement is additionally operable to: described plate-making time corresponding bianry image is carried out
Row projection, obtains first row projection result set；
Described plate-making time row number determination subelement is additionally operable to: according to each in described secondary series projection result set
The numerical values recited of individual row projection, determines described plate-making time corresponding second row number set；
Described width determination subelement is additionally operable to: according to the row number threshold value in described second row number set, determines
The width that the described plate-making time takies in described image.
10. the version recognition device of the bank note according to any one of claim 6 to 9, its feature exists
In described plate-making time determining unit is additionally operable to:
If the width that the described plate-making time takies is less than or equal to pre-set image width it is determined that described bank note
The plate-making time is 1999；
If the width that the described plate-making time takies is less than or equal to pre-set image width, and in the described plate-making time
The width of the 3rd character is more than or equal to described preset characters width it is determined that the plate-making time of described bank note is
2005.
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| CN201510412425.8A CN106355743A (en) | 2015-07-14 | 2015-07-14 | Banknote version identification method and device |
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