CN108734161A - Recognition methods, device, equipment and the storage medium in crown word number region - Google Patents
Recognition methods, device, equipment and the storage medium in crown word number region Download PDFInfo
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- CN108734161A CN108734161A CN201710239389.9A CN201710239389A CN108734161A CN 108734161 A CN108734161 A CN 108734161A CN 201710239389 A CN201710239389 A CN 201710239389A CN 108734161 A CN108734161 A CN 108734161A
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- G—PHYSICS
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- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/60—Type of objects
- G06V20/62—Text, e.g. of license plates, overlay texts or captions on TV images
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
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- G06V10/28—Quantising the image, e.g. histogram thresholding for discrimination between background and foreground patterns
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Abstract
The embodiment of the invention discloses a kind of recognition methods, device, equipment and the storage mediums in crown word number region.The method includes：It moves the first sliding window line by line on the gray-scale map of crown word number region of search, and determines the up-and-down boundary in crown word number region according to overlay area of first sliding window at different shift positions；Binary conversion treatment is carried out to the gray-scale map in the up-and-down boundary, forms binary image；It moves the second sliding window by column on the binary image, and determines the right boundary in the crown word number region according to overlay area of second sliding window at different shift positions.Technical solution through the invention can save processing time, improve treatment effeciency.
Description
Technical field
The present embodiments relate to image processing techniques more particularly to a kind of recognition methods in crown word number region, device, set
Standby and storage medium.
Background technology
Number on bank note is also known as serial number, and by taking RMB as an example, " prefix " is to be imprinted on bank note to be used for label print
Two or three English alphabets of batch, by the layout according to certain rules of Yin Chao factories and printing；" number " is imprinted on behind prefix
Arabic numerals serial number, for indicating every banknote putting in order in same prefix batch.
In order to identify the crown word number in bank note, generally require first to handle crown word number.The prefix generally used at present
Number processing method is：Binaryzation first is carried out to crown word number, then crown word number is accurately positioned, finally it is split.And
It is carried out before being accurately positioned due to binarization in the prior art, the plenty of time can be wasted, influence processing effect
Rate.
Invention content
The embodiment of the present invention provides a kind of recognition methods, device, equipment and the storage medium in crown word number region, to realize section
About processing time improves treatment effeciency.
In a first aspect, an embodiment of the present invention provides a kind of recognition methods in crown word number region, including：
Move the first sliding window line by line on the gray-scale map of crown word number region of search, and according to first sliding window
Overlay area at different shift positions determines the up-and-down boundary in crown word number region；
Binary conversion treatment is carried out to the gray-scale map in the up-and-down boundary, forms binary image；
Move the second sliding window by column on the binary image, and according to second sliding window in different shiftings
Overlay area at dynamic position determines the right boundary in the crown word number region.
Further, calibrated altitude and the prefix of the size of first sliding window according to the crown word number region
The width of number region of search determines；The size of second sliding window is according to the calibrated altitude and standard in the crown word number region
Width determines.
Further, it is described on the gray-scale map of crown word number region of search line by line move the first sliding window, including：
If in standard crown word number area image, the pixel accumulated value of each pixel of crown word number region coboundary is less than
The pixel accumulated value of each pixel of crown word number region lower boundary, then according to sequence from top to bottom in crown word number region of search
First sliding window is moved on gray-scale map line by line；
If in standard crown word number area image, the pixel accumulated value of each pixel of crown word number region coboundary is more than
The accumulated value of each pixel of crown word number region lower boundary, the then gray scale according to sequence from bottom to up in crown word number region of search
First sliding window is moved on figure line by line.
Further, described that crown word number is determined according to overlay area of first sliding window at different shift positions
The up-and-down boundary in region, including：
The pixel for calculating separately first sliding window each pixel in the overlay area at different shift positions is tired
It is value added；
By the up-and-down boundary of the overlay area of first sliding window corresponding with minimum pixel accumulated value, it is determined as institute
State the up-and-down boundary in crown word number region.
Further, the overlay area by first sliding window corresponding with minimum pixel accumulated value is upper and lower
Boundary is determined as the up-and-down boundary in the crown word number region, further comprises：
If at least two minimum pixel accumulated values are calculated, the moving direction of first sliding window is referred to,
By the up-and-down boundary of the overlay area of first sliding window corresponding with the minimum pixel accumulated value finally obtained, it is determined as
The up-and-down boundary in the crown word number region.
Further, the gray-scale map in the up-and-down boundary carries out binary conversion treatment, forms binary picture
Picture, including：
Binary conversion treatment is carried out to the gray-scale map in the up-and-down boundary by row, and binaryzation is completed to each row
After processing, the projection result of the row is calculated；
It is described that the crown word number region is determined according to overlay area of second sliding window at different shift positions
Right boundary, including：
According to the row for including from overlay area of second sliding window at different shift positions, and the institute that respectively arranges
Projection result is stated, the projection result accumulated value of each overlay area is calculated separately；
According to the processing mode of the binary conversion treatment, extreme value vertex type is determined；
In each projection result accumulated value, obtain cumulative with the target projection result of the extreme point type matching
Value, and by the right boundary of the overlay area of second sliding window corresponding with the target projection result accumulated value, really
It is set to the right boundary in the crown word number region.
Further, the prefix is being determined according to overlay area of second sliding window at different shift positions
After the right boundary in number region, further include：
In the gray-scale map of the crown word number region of search, prefix is determined according to the up-and-down boundary and the right boundary
Number area grayscale figure；
Divided in equal amounts is carried out according to the character quantity of crown word number to the crown word number area grayscale figure, forms multiple cut sections
Domain；
Binary conversion treatment is carried out respectively to the multiple cut zone.
Second aspect, the embodiment of the present invention additionally provide a kind of identification device in crown word number region, which includes：
Up-and-down boundary determining module, for moving the first sliding window line by line on the gray-scale map of crown word number region of search,
And the up-and-down boundary in crown word number region is determined according to overlay area of first sliding window at different shift positions；
Binary processing module forms two for carrying out binary conversion treatment to the gray-scale map in the up-and-down boundary
Value image；
Right boundary determining module, for moving the second sliding window by column on the binary image, and according to institute
State the right boundary that overlay area of second sliding window at different shift positions determines the crown word number region.
Further, calibrated altitude and the prefix of the size of first sliding window according to the crown word number region
The width of number region of search determines；The size of second sliding window is according to the calibrated altitude and standard in the crown word number region
Width determines.
Further, the up-and-down boundary determining module, including：
First movement submodule, if in standard crown word number area image, each picture of crown word number region coboundary
The pixel accumulated value of vegetarian refreshments is less than the pixel accumulated value of each pixel of crown word number region lower boundary, then suitable according to from top to bottom
Sequence moves first sliding window line by line on the gray-scale map of crown word number region of search；
Second mobile submodule, if in standard crown word number area image, each picture of crown word number region coboundary
The pixel accumulated value of vegetarian refreshments is more than the accumulated value of each pixel of crown word number region lower boundary, then exists according to sequence from bottom to up
First sliding window is moved on the gray-scale map of crown word number region of search line by line.
Further, the up-and-down boundary determining module further includes：
Pixel adds up submodule, for calculating separately the area of coverage of first sliding window at different shift positions
The pixel accumulated value of each pixel in domain；
Boundary determination sub-module is used for the overlay area of first sliding window corresponding with minimum pixel accumulated value
Up-and-down boundary, be determined as the up-and-down boundary in the crown word number region.
Further, the boundary determination sub-module, is further used for：
If at least two minimum pixel accumulated values are calculated, the moving direction of first sliding window is referred to,
By the up-and-down boundary of the overlay area of first sliding window corresponding with the minimum pixel accumulated value finally obtained, it is determined as
The up-and-down boundary in the crown word number region.
Further, the binary processing module, is specifically used for：
Binary conversion treatment is carried out to the gray-scale map in the up-and-down boundary by row, and binaryzation is completed to each row
After processing, the projection result of the row is calculated；
The right boundary determining module, is specifically used for：
According to the row for including from overlay area of second sliding window at different shift positions, and the institute that respectively arranges
Projection result is stated, the projection result accumulated value of each overlay area is calculated separately；
According to the processing mode of the binary conversion treatment, extreme value vertex type is determined；
In each projection result accumulated value, obtain cumulative with the target projection result of the extreme point type matching
Value, and by the right boundary of the overlay area of second sliding window corresponding with the target projection result accumulated value, really
It is set to the right boundary in the crown word number region.
Further, further include：
Gray-scale map determining module, for true according to overlay area of second sliding window at different shift positions
After the right boundary in the fixed crown word number region, in the gray-scale map of the crown word number region of search, according to described following
Boundary and the right boundary determine crown word number area grayscale figure；
Region segmentation module, for carrying out equivalent according to the character quantity of crown word number to the crown word number area grayscale figure
Segmentation, forms multiple cut zone；
Region binarization block, for carrying out binary conversion treatment respectively to the multiple cut zone.
The third aspect, the embodiment of the present invention additionally provide a kind of computer equipment, including memory, processor and are stored in
It is realized on memory and when processor described in the computer program that can run on a processor executes described program as the present invention is real
Apply the recognition methods in any crown word number region in example.
Fourth aspect, the embodiment of the present invention additionally provide a kind of computer readable storage medium, are stored thereon with computer
Program realizes the recognition methods in the crown word number region as described in any in the embodiment of the present invention when program is executed by processor.
The embodiment of the present invention is by the first sliding window mobile first, according to the first sliding window in crown word number region of search
Gray-scale map on different shift positions at overlay area determine the up-and-down boundary in crown word number region, then in up-and-down boundary
Gray-scale map carries out binary conversion treatment, finally moves the second sliding window by column on binary image again, and then determine crown word number
The right boundary in region is utilized after determining up-and-down boundary and carries out binary conversion treatment again and can save the excellent of binary conversion treatment time
Point solves in the prior art because just leading to the waste plenty of time due to carrying out binary conversion treatment before positioning, influences processing effect
The problem of rate, realizes and saves processing time, improves the effect for the treatment of effeciency.
Description of the drawings
Fig. 1 is a kind of flow diagram of the recognition methods in crown word number region that the embodiment of the present invention one provides；
Fig. 2 is a kind of flow diagram of the recognition methods in crown word number region provided by Embodiment 2 of the present invention；
Fig. 3 is a kind of structural schematic diagram of the identification device in crown word number region that the embodiment of the present invention three provides；
Fig. 4 is a kind of structural schematic diagram for computer equipment that the embodiment of the present invention four provides.
Specific implementation mode
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limitation of the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
Embodiment one
Fig. 1 is a kind of flow diagram of the recognition methods in crown word number region that the embodiment of the present invention one provides.This method
The case where being applicable to handle paper money number, this method can be executed by the identification device in crown word number region, should
Device can be made of hardware and/or software, and can be generally integrated in computer and all terminals comprising image processing function.
It specifically includes as follows：
S110, the first sliding window is moved line by line on the gray-scale map of crown word number region of search, and according to the first sliding window
Overlay area of the mouth at different shift positions determines the up-and-down boundary in crown word number region.
Wherein, crown word number region of search can be in bank note gray-scale map after Primary Location gained region, specifically, tentatively
Position fixing process can, to the gray-scale map about banknote image can be obtained after bank note progress Image Acquisition, be empirically worth at this
Primary Location is carried out to crown word number region on gray-scale map.Optionally, the first sliding window covers when being moved line by line
Region can be different due to the difference of shift position, thus the pixel for being included in distinct coverage region can also change, by
There is particularity compared to the pixel value of the pixel in other regions in the pixel value of the pixel in crown word number region, therefore, when
When first sliding window is moved to specific location, the pixel value of the pixel for being included in overlay area will meet default
Condition, and then determine the up-and-down boundary in crown word number region.
Preferably, the size of the first sliding window is according to the calibrated altitude in crown word number region and the width of crown word number region of search
Degree determines.
Illustratively, if the calibrated altitude in crown word number region is 20, and the width of the crown word number region of search primarily determined
It is 300, then the height size of the first sliding window is 20, and width size is 300.The advantages of this arrangement are as follows when the first cunning
When dynamic window is moved line by line, once detect that the first sliding window is moved to the position that crown word number region can be completely covered
When, you can determine that the up-and-down boundary of the first sliding window overlay area is the up-and-down boundary in crown word number region.
S120, binary conversion treatment is carried out to the gray-scale map in up-and-down boundary, forms binary image.
Optionally, preset Image binarizing algorithm can be used, binary conversion treatment is carried out to the gray-scale map in up-and-down boundary,
Wherein Binarization methods can be OTSU (maximum between-cluster variance) algorithms or P parametric methods.The basic thought of OTSU algorithms is basis
Initial threshold divides the image into foreground, two class image of background, then calculates the variance between two classes, updates threshold value, recalculates
Inter-class variance, the threshold value when meeting inter-class variance maximum, as required optimal threshold.The basic thought of P parametric methods be exactly
When knowing in image the ratio shared by target, recycles different gray values and image is split, and calculate corresponding target institute
The ratio accounted for, if the difference of the ratio and known target ratio is sufficiently small, which is exactly required optimal segmentation threshold
Value.
Determine that carrying out binary conversion treatment again after up-and-down boundary is advantageous in that, by reducing the gray-scale map that need to be handled, i.e., only
Binary conversion treatment is carried out to the gray-scale map in up-and-down boundary and improves treatment effeciency to reduce the binary conversion treatment time.
Preferably, row are pressed, binary conversion treatment is carried out to the gray-scale map in up-and-down boundary, and binaryzation is completed to each row
After processing, the projection result of the row is calculated.
Wherein, the projection result for calculating the row refers to calculating the sum of the row pixel value of the row.It is carried out at binaryzation by row
The projection result of each column is calculated while reason to be advantageous in that, it is possible to reduce the cycle-index for once traversing each pixel makes
The process of binary conversion treatment process and the projection result for calculating each column can be within the once cycle of traversal pixel with regard to all
It completes, to further save processing time, improves treatment effeciency.
S130, the second sliding window is moved by column on binary image, and according to the second sliding window in different movements
Overlay area at position determines the right boundary in crown word number region.
Optionally, the second sliding window when being moved by column overlay area can because shift position it is different without
Together, thus in distinct coverage region the pixel for being included can also change, due to the pixel of the pixel in crown word number region
The pixel value for being worth the pixel compared to other regions has particularity, therefore, when the second sliding window is moved to specific position
When place, the pixel value for the pixel for being included in overlay area will meet preset condition, and then determine crown word number region
Up-and-down boundary.
In addition, first determining that up-and-down boundary determines that right boundary is advantageous in that again, if the gray-scale map of crown word number region of search
It is upper exist be stained or when noise, since the pixel for being included on line direction is more than column direction, is similarly stained or makes an uproar
Sound is smaller on the influence of the sum of pixel value of line direction, when being accurately positioned to crown word number region, first determines up-and-down boundary again
It determines that right boundary can improve the positioning accuracy in crown word number region, reduces influence of the noise to positioning.
Preferably, the size of the second sliding window is determined according to the calibrated altitude and normal width in crown word number region.
Optionally, the size of the second sliding window is equal to the normal size in crown word number region.
Illustratively, if the calibrated altitude in crown word number region is 20, normal width 200, then the height of the second sliding window
It is 20 to spend size, and width size is 200.The advantages of this arrangement are as follows when the second sliding window is moved by column, once
When detecting that the second sliding window is moved to the position that crown word number region can be completely covered, you can determine that the second sliding window covers
The right boundary of cover area is the right boundary in crown word number region.
Preferably, the left and right in crown word number region is determined according to overlay area of second sliding window at different shift positions
Boundary may include：According to the row for including from overlay area of second sliding window at different shift positions, and respectively arrange
Projection result calculates separately the projection result accumulated value of each overlay area；According to the processing mode of binary conversion treatment, extreme value is determined
Vertex type；In each projection result accumulated value, obtain with the target projection result accumulated value of extreme point type matching, and will be with
The right boundary of the overlay area of corresponding second sliding window of target projection result accumulated value, is determined as the left side in crown word number region
Right margin.
Wherein, the projection result accumulated value for calculating each overlay area calculates each row picture for being included in each overlay area
The sum of pixel value of vegetarian refreshments.
Illustratively, if in the binary image formed, prefix sign character is assigned black, and (pixel value of pixel is
0), background is assigned white (pixel value of pixel is 255), then pole type is minimum point；If prefix sign character quilt
It is assigned a value of white, background is assigned black, then pole type is maximum point.
Due to character different in crown word number, its up-and-down boundary is different, and the regional area corresponding to each character
Interior binary-state threshold also can be variant, therefore, in order to further increase the positional accuracy of crown word number, is excluded also for further
Noise jamming improves the treatment effect of binaryzation, it is preferred that in the covering according to the second sliding window at different shift positions
After region determines the right boundary in crown word number region, further include：In the gray-scale map of crown word number region of search, according to upper following
Boundary and right boundary determine crown word number area grayscale figure；Crown word number area grayscale figure is carried out according to the character quantity of crown word number etc.
Amount segmentation, forms multiple cut zone；Binary conversion treatment is carried out respectively to multiple cut zone.
Wherein, divided in equal amounts is carried out according to the character quantity of crown word number to crown word number area grayscale figure, can obtained single
Character zone can further increase binaryzation by carrying out binary conversion treatment respectively to the cut zone where single character
Treatment effect, to keep the positioning of crown word number more accurate.
The technical solution of the present embodiment, by the first sliding window mobile first, according to the first sliding window in crown word number
The overlay area at different shift positions on the gray-scale map of region of search determines the up-and-down boundary in crown word number region, then to upper
Gray-scale map in lower boundary carries out binary conversion treatment, finally moves the second sliding window by column on binary image again, in turn
The right boundary for determining crown word number region is utilized after determining up-and-down boundary and carries out binary conversion treatment again and can save at binaryzation
Manage the time the advantages of, solve in the prior art because before positioning just carry out binary conversion treatment due to cause waste the plenty of time,
The problem of influencing treatment effeciency, realizes and saves processing time, improves the effect for the treatment of effeciency.
Embodiment two
Fig. 2 is a kind of flow diagram of the recognition methods in crown word number region provided by Embodiment 2 of the present invention.This implementation
Example is optimized based on above-described embodiment, the recognition methods in preferred crown word number region is provided, specifically, in prefix
The first sliding window is moved on the gray-scale map of number region of search line by line, and according to the first sliding window at different shift positions
Overlay area determines that the up-and-down boundary in crown word number region is advanced optimized.It specifically includes as follows：
S210, in standard crown word number area image, the pixel accumulated value of each pixel of crown word number region coboundary is
The pixel accumulated value of no each pixel less than crown word number region lower boundary, if so, executing S220；If it is not, then executing S230.
Since the pixel value of the top and bottom of character included in crown word number in most cases is different, example
Such as, only in the gray-scale map comprising character " T ", upper end pixel value can be less than lower end pixel value；And in the gray scale for only including character " A "
In figure, upper end pixel value can be higher than lower end pixel value.In addition, the letter that crown word number is included in each version RMB and number
Height is possible to difference, so as to cause different, the example of the sum of the sum of each point pixel value of coboundary and each point pixel value of lower boundary
Such as, for RMB, eight characters after the height of the first two letter is higher than in the crown word number of 99 editions RMB, and 15 editions
In the crown word number of RMB the height of the first two letter will be less than rear eight characters, so as to cause coboundary each point pixel value it
The sum of with each point pixel of lower boundary to be generally higher than.Therefore, it is preced with for the different standards corresponding to different standard bank note
Font size area image needs that different moving directions should be used, to reduce noise to crown word number region up-and-down boundary positioning accuracy
It influences.
S220, the first sliding window is moved line by line on the gray-scale map of crown word number region of search according to sequence from top to bottom
Mouthful.
Illustratively, the up-and-down boundary in crown word number region is respectively the 21st row and the 40th row of crown word number region of search, when
The letter or number that crown word number region is included in standard crown word number area image, which is mostly " T ", " 7 " etc., has obviously upper end pixel
When value is less than the character of lower end pixel value, the pixel accumulated value of each pixel of crown word number region coboundary can be caused to be more than prefix
The accumulated value of each pixel of number region lower boundary.If at this point, the pixel that the pixel accumulated value of the 21st row is the 200, the 40th row is tired out
Value added is 100, then when noise occurs in the 20th row, the pixel value of noise (noise is black pixel point) needs to be less than 100 just meetings
Cause up-and-down boundary positioning wrong；When noise occurs in the 41st row, as long as the pixel value of noise may result in below less than 200
It is wrong to define position.In this case, the noise margin of lower boundary following region can be higher than coboundary area above.In addition, due to
It is generally bigger than there is the big probability being stained to occur the small probability being stained in gray-scale map, therefore, for it is general it is small be stained, occur
Mistake occurs for the positioning that crown word number region is not easily leaded in lower boundary following region.And it is cumulative there are two minimum pixels
Under the limiting case of value, preferably by the overlay area of corresponding first sliding window of the minimum pixel accumulated value finally obtained
Up-and-down boundary is determined as the up-and-down boundary in crown word number region, and therefore, moving the first sliding window according to sequence from top to bottom can
To improve the robustness of crown word number zone location.
S230, the first sliding window is moved line by line on the gray-scale map of crown word number region of search according to sequence from bottom to up
Mouthful.
Optionally, in standard crown word number area image, the pixel accumulated value of each pixel of crown word number region coboundary
Equal to each pixel of crown word number region lower boundary pixel accumulated value when, moving direction is unlimited.
Illustratively, the up-and-down boundary in crown word number region is respectively the 21st row and the 40th row of crown word number region of search, when
When the letter that crown word number region is included in standard crown word number area image and the inconsistent coboundary height of number (such as 99 editions
Or 15 editions RMB), the pixel accumulated value of each pixel of crown word number region coboundary can be caused to be more than crown word number region following
The accumulated value of each pixel on boundary.If at this point, the pixel accumulated value that the pixel accumulated value of the 21st row is the 200, the 40th row is 100,
Then when noise occurs in the 20th row, the pixel value of noise (noise is black pixel point) needs just cause less than 100 following
It is wrong to define position；When noise occurs in the 41st row, it is located as long as the pixel value of noise may result in up-and-down boundary less than 200
Accidentally, in this case, the noise margin of coboundary area above can be higher than lower boundary following region.In addition, due in gray-scale map
It is generally bigger than there is the big probability being stained to there is the small probability being stained, therefore, for it is general it is small be stained, appear in coboundary
Mistake occurs for the positioning that crown word number region is not easily leaded to when area above.And in the limit for two minimum pixel accumulated values occur
In the case of, preferably by the upper following of the overlay area of corresponding first sliding window of the minimum pixel accumulated value finally obtained
Boundary is determined as the up-and-down boundary in crown word number region, and therefore, moving the first sliding window according to sequence from bottom to up can improve
The robustness of crown word number zone location.
S240, the pixel for calculating separately the first sliding window each pixel in the overlay area at different shift positions are tired
It is value added.
Illustratively, the overlay area of the first sliding window includes 20 rows, then is moved since the 1st row when the first sliding window
When dynamic, then calculate the sum of the pixel value of all pixels point in the 1st row to the 20th row in the gray-scale map of crown word number region of search, i.e., the
The pixel accumulated value of each pixel in 1 row to the 20th row；When the first sliding window moves down a line, then the 2nd row is calculated extremely
The pixel accumulated value of each pixel in 21st row；When the first sliding window continues to move down a line, then the 3rd row is calculated to the
The pixel accumulated value of each pixel in 22 rows, and so on, until the gray-scale map for having traversed crown word number region of search includes
All rows.
S250, by the up-and-down boundary of the overlay area of the first sliding window corresponding with minimum pixel accumulated value, be determined as
The up-and-down boundary in crown word number region.
When all rows that the gray-scale map for having traversed crown word number region of search includes, multiple pixel accumulated values can be obtained, select
The overlay area of the first sliding window corresponding to wherein minimum pixel accumulated value is selected, and the up-and-down boundary in this region is determined as
The up-and-down boundary in crown word number region.
For example, when the first sliding window is moved to 21 row, the pixel accumulated value being calculated is minimum, then by the 21st row and
40th row is identified as the up-and-down boundary in crown word number region.
Preferably, if at least two minimum pixel accumulated values are calculated, the mobile side of the first sliding window is referred to
To by the up-and-down boundary of the overlay area of the first sliding window corresponding with the minimum pixel accumulated value finally obtained, being determined as
The up-and-down boundary in crown word number region.
Illustratively, a kind of limiting case is the pixel accumulated value phase of the 20th row to the 39th row and the 21st row to the 40th row
Deng, and be minimum pixel accumulated value.At this point, if the first sliding window is moved line by line according to sequence from top to bottom
, it is determined that the up-and-down boundary of the 21st row and the 40th behavior crown word number region；If the first sliding window is according to from bottom to up
What sequence was moved line by line, it is determined that the up-and-down boundary of the 20th row and the 39th behavior crown word number region.
S260, binary conversion treatment is carried out to the gray-scale map in up-and-down boundary, forms binary image.
S270, the second sliding window is moved by column on binary image, and according to the second sliding window in different movements
Overlay area at position determines the right boundary in crown word number region.
The technical solution of the present embodiment, by judging in standard crown word number area image, crown word number region coboundary
Magnitude relationship between the pixel accumulated value of each pixel and the pixel accumulated value of each pixel of crown word number region lower boundary is come
The moving direction of the first sliding window is determined, to choose minimum pixel accumulated value pair in the pixel accumulated value being calculated
The up-and-down boundary of the overlay area for the first sliding window answered is determined as the up-and-down boundary in crown word number region, improves crown word number
The positioning robustness in region reduces picture noise or is stained the influence to positioning accuracy.
Embodiment three
Fig. 3 is a kind of structural schematic diagram of the identification device in crown word number region that the embodiment of the present invention three provides.The device
The case where being applicable to handle paper money number, the device can be made of hardware and/or software, and can be generally integrated in
In computer and all terminals comprising image processing function.With reference to figure 3, the identification device in crown word number region includes：It is upper following
Boundary's determining module 310, binary processing module 320 and right boundary determining module 330 below carry out specifically each module
It is bright.
Up-and-down boundary determining module 310, for moving the first sliding window line by line on the gray-scale map of crown word number region of search
Mouthful, and determine according to overlay area of first sliding window at different shift positions the up-and-down boundary in crown word number region；
Binary processing module 320 is formed for carrying out binary conversion treatment to the gray-scale map in the up-and-down boundary
Binary image；
Right boundary determining module 330, on the binary image by column move the second sliding window, and according to
Overlay area of second sliding window at different shift positions determines the right boundary in the crown word number region.
The identification device in crown word number region provided in an embodiment of the present invention, by moving the first sliding window first, according to
Overlay area of first sliding window at the different shift positions on the gray-scale map of crown word number region of search determines crown word number area
The up-and-down boundary in domain, then binary conversion treatment is carried out to the gray-scale map in up-and-down boundary, finally moved by column on binary image again
Dynamic second sliding window, and then determine the right boundary in crown word number region, it is utilized after determining up-and-down boundary and carries out binaryzation again
Processing the advantages of can saving the binary conversion treatment time, solve in the prior art because before positioning with regard to progress binary conversion treatment
And the problem of causing to waste the plenty of time, influencing treatment effeciency, it realizes and saves processing time, improve the effect for the treatment of effeciency.
Optionally, calibrated altitude and the crown word number of the size of first sliding window according to the crown word number region
The width of region of search determines；The size of second sliding window is wide according to the calibrated altitude and standard in the crown word number region
Degree determines.
Optionally, up-and-down boundary determining module 310 may include：
First movement submodule, if in standard crown word number area image, each picture of crown word number region coboundary
The pixel accumulated value of vegetarian refreshments is less than the pixel accumulated value of each pixel of crown word number region lower boundary, then suitable according to from top to bottom
Sequence moves first sliding window line by line on the gray-scale map of crown word number region of search；
Second mobile submodule, if in standard crown word number area image, each picture of crown word number region coboundary
The pixel accumulated value of vegetarian refreshments is more than the accumulated value of each pixel of crown word number region lower boundary, then exists according to sequence from bottom to up
First sliding window is moved on the gray-scale map of crown word number region of search line by line.
Optionally, up-and-down boundary determining module 310 can also include：
Pixel adds up submodule, for calculating separately overlay area of first sliding window at different shift positions
In each pixel pixel accumulated value；
Boundary determination sub-module is used for the overlay area of first sliding window corresponding with minimum pixel accumulated value
Up-and-down boundary, be determined as the up-and-down boundary in the crown word number region.
Optionally, the boundary determination sub-module, can be further used for：
If at least two minimum pixel accumulated values are calculated, the moving direction of first sliding window is referred to,
By the up-and-down boundary of the overlay area of first sliding window corresponding with the minimum pixel accumulated value finally obtained, it is determined as
The up-and-down boundary in the crown word number region.
Optionally, binary processing module 320 specifically can be used for：
Binary conversion treatment is carried out to the gray-scale map in the up-and-down boundary by row, and binaryzation is completed to each row
After processing, the projection result of the row is calculated；
Right boundary determining module 330, specifically can be used for：
According to the row for including from overlay area of second sliding window at different shift positions, and the institute that respectively arranges
Projection result is stated, the projection result accumulated value of each overlay area is calculated separately；
According to the processing mode of the binary conversion treatment, extreme value vertex type is determined；
In each projection result accumulated value, obtain cumulative with the target projection result of the extreme point type matching
Value, and by the right boundary of the overlay area of second sliding window corresponding with the target projection result accumulated value, really
It is set to the right boundary in the crown word number region.
Optionally, can also include：
Gray-scale map determining module, for true according to overlay area of second sliding window at different shift positions
After the right boundary in the fixed crown word number region, in the gray-scale map of the crown word number region of search, according to described following
Boundary and the right boundary determine crown word number area grayscale figure；
Region segmentation module, for carrying out equivalent point according to the character quantity of crown word number to the crown word number area grayscale figure
It cuts, forms multiple cut zone；
Region binarization block, for carrying out binary conversion treatment respectively to the multiple cut zone.
The said goods can perform the method that any embodiment of the present invention is provided, and have the corresponding function module of execution method
And advantageous effect.
Example IV
Fig. 4 is a kind of structural schematic diagram for computer equipment that the embodiment of the present invention four provides.Fig. 4 is shown suitable for using
Come realize embodiment of the present invention exemplary computer device 12 block diagram.The computer equipment 12 that Fig. 4 is shown is only one
A example should not bring any restrictions to the function and use scope of the embodiment of the present invention.
As shown in figure 4, computer equipment 12 is showed in the form of universal computing device.The component of computer equipment 12 can be with
Including but not limited to：One or more processor or processing unit 16, system storage 28 connect different system component
The bus 18 of (including system storage 28 and processing unit 16).
Bus 18 indicates one or more in a few class bus structures, including memory bus or Memory Controller,
Peripheral bus, graphics acceleration port, processor or the local bus using the arbitrary bus structures in a variety of bus structures.It lifts
For example, these architectures include but not limited to industry standard architecture (ISA) bus, microchannel architecture (MAC)
Bus, enhanced isa bus, Video Electronics Standards Association (VESA) local bus and peripheral component interconnection (PCI) bus.
Computer equipment 12 typically comprises a variety of computer system readable media.These media can be it is any can be by
The usable medium that computer equipment 12 accesses, including volatile and non-volatile media, moveable and immovable medium.
System storage 28 may include the computer system readable media of form of volatile memory, such as arbitrary access
Memory (RAM) 30 and/or cache memory 32.Computer equipment 12 may further include it is other it is removable/can not
Mobile, volatile/non-volatile computer system storage medium.Only as an example, storage system 34 can be used for reading and writing not
Movably, non-volatile magnetic media (Fig. 4 do not show, commonly referred to as " hard disk drive ").It although not shown in fig 4, can be with
It provides for the disc driver to moving non-volatile magnetic disk (such as " floppy disk ") read-write, and to removable non-volatile
The CD drive of CD (such as CD-ROM, DVD-ROM or other optical mediums) read-write.In these cases, each driving
Device can be connected by one or more data media interfaces with bus 18.Memory 28 may include at least one program
There is one group of (for example, at least one) program module, these program modules to be configured to perform the present invention for product, the program product
The function of each embodiment.
Program/utility 40 with one group of (at least one) program module 42 can be stored in such as memory 28
In, such program module 42 includes --- but being not limited to --- operating system, one or more application program, other programs
Module and program data may include the realization of network environment in each or certain combination in these examples.Program mould
Block 42 usually executes function and/or method in embodiment described in the invention.
Computer equipment 12 can also be with one or more external equipments 14 (such as keyboard, sensing equipment, display 24
Deng) communication, can also be enabled a user to one or more equipment interact with the computer equipment 12 communicate, and/or with make
The computer equipment 12 any equipment (such as network interface card, the modulatedemodulate that can be communicated with one or more of the other computing device
Adjust device etc.) communication.This communication can be carried out by input/output (I/O) interface 22.Also, computer equipment 12 may be used also
To pass through network adapter 20 and one or more network (such as LAN (LAN), wide area network (WAN) and/or public network
Network, such as internet) communication.As shown, network adapter 20 is logical by bus 18 and other modules of computer equipment 12
Letter.It should be understood that although not shown in the drawings, can in conjunction with computer equipment 12 use other hardware and/or software module, including
But it is not limited to：Microcode, device driver, redundant processing unit, external disk drive array, RAID system, tape drive
And data backup storage system etc..
Processing unit 16 is stored in program in system storage 28 by operation, to perform various functions application and
Data processing, such as realize the recognition methods in the crown word number region that the embodiment of the present invention is provided：In crown word number region of search
The first sliding window, and the overlay area according to first sliding window at different shift positions are moved on gray-scale map line by line
Determine the up-and-down boundary in crown word number region；Binary conversion treatment is carried out to the gray-scale map in the up-and-down boundary, forms two-value
Change image；Move the second sliding window by column on the binary image, and according to second sliding window in different shiftings
Overlay area at dynamic position determines the right boundary in the crown word number region.
Embodiment five
The embodiment of the present invention five provides a kind of computer readable storage medium, is stored thereon with computer program, the journey
The recognition methods in the crown word number region provided such as all inventive embodiments of the application is provided when sequence is executed by processor：In crown word number
The first sliding window is moved on the gray-scale map of region of search line by line, and according to first sliding window at different shift positions
Overlay area determine the up-and-down boundary in crown word number region；The gray-scale map in the up-and-down boundary is carried out at binaryzation
Reason forms binary image；Move the second sliding window by column on the binary image, and according to second sliding window
Overlay area of the mouth at different shift positions determines the right boundary in the crown word number region.
The arbitrary combination of one or more computer-readable media may be used.Computer-readable medium can be calculated
Machine readable signal medium or computer readable storage medium.Computer readable storage medium for example can be --- but it is unlimited
In --- electricity, system, device or the device of magnetic, optical, electromagnetic, infrared ray or semiconductor, or the arbitrary above combination.It calculates
The more specific example (non exhaustive list) of machine readable storage medium storing program for executing includes：Electrical connection with one or more conducting wires, just
It takes formula computer disk, hard disk, random access memory (RAM), read-only memory (ROM), erasable type and may be programmed read-only storage
Device (EPROM or flash memory), optical fiber, portable compact disc read-only memory (CD-ROM), light storage device, magnetic memory device,
Or above-mentioned any appropriate combination.In this document, can be any include computer readable storage medium or storage journey
The tangible medium of sequence, the program can be commanded the either device use or in connection of execution system, device.
Computer-readable signal media may include the data letter propagated in a base band or as a carrier wave part
Number, wherein carrying computer-readable program code.Diversified forms may be used in the data-signal of this propagation, including ---
But it is not limited to --- electromagnetic signal, optical signal or above-mentioned any appropriate combination.Computer-readable signal media can be with
Any computer-readable medium other than computer readable storage medium, which can send, propagate or
Person transmission for by instruction execution system, device either device use or program in connection.
The program code for including on computer-readable medium can transmit with any suitable medium, including --- but it is unlimited
In --- wireless, electric wire, optical cable, RF etc. or above-mentioned any appropriate combination.
It can be write with one or more programming languages or combinations thereof for executing the computer that operates of the present invention
Program code, described program design language include object oriented program language-such as Java, Smalltalk, C++,
Further include conventional procedural programming language-such as " C " language or similar programming language.Program code can be with
It fully executes, partly execute on the user computer on the user computer, being executed as an independent software package, portion
Divide and partly executes or executed on a remote computer or server completely on the remote computer on the user computer.?
Be related in the situation of remote computer, remote computer can pass through the network of any kind --- including LAN (LAN) or
Wide area network (WAN)-be connected to subscriber computer, or, it may be connected to outer computer (such as carried using Internet service
It is connected by internet for quotient).
Note that above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The present invention is not limited to specific embodiments described here, can carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out to the present invention by above example
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
May include other more equivalent embodiments, and the scope of the present invention is determined by scope of the appended claims.
Claims (10)
1. a kind of recognition methods in crown word number region, which is characterized in that including：
Move the first sliding window line by line on the gray-scale map of crown word number region of search, and according to first sliding window not
The up-and-down boundary in crown word number region is determined with the overlay area at shift position；
Binary conversion treatment is carried out to the gray-scale map in the up-and-down boundary, forms binary image；
Move the second sliding window by column on the binary image, and according to second sliding window in different mobile positions
The overlay area at the place of setting determines the right boundary in the crown word number region.
2. according to the method described in claim 1, it is characterized in that：
The size of first sliding window is according to the calibrated altitude in the crown word number region and the crown word number region of search
Width determines；The size of second sliding window is determined according to the calibrated altitude and normal width in the crown word number region.
3. according to the method described in claim 2, it is characterized in that, described move line by line on the gray-scale map of crown word number region of search
Dynamic first sliding window, including：
If in standard crown word number area image, the pixel accumulated value of each pixel of crown word number region coboundary is less than prefix
The pixel accumulated value of each pixel of number region lower boundary, the then gray scale according to sequence from top to bottom in crown word number region of search
First sliding window is moved on figure line by line；
If in standard crown word number area image, the pixel accumulated value of each pixel of crown word number region coboundary is more than prefix
The accumulated value of each pixel of number region lower boundary, then according to sequence from bottom to up on the gray-scale map of crown word number region of search
First sliding window is moved line by line.
4. according to the method described in claim 3, it is characterized in that, it is described according to first sliding window in different mobile positions
The overlay area at the place of setting determines the up-and-down boundary in crown word number region, including：
Calculate separately the pixel accumulated value of first sliding window each pixel in the overlay area at different shift positions；
By the up-and-down boundary of the overlay area of first sliding window corresponding with minimum pixel accumulated value, it is determined as the hat
The up-and-down boundary in font size region.
5. according to the method described in claim 4, it is characterized in that, described will corresponding with minimum pixel accumulated value described first
The up-and-down boundary of the overlay area of sliding window is determined as the up-and-down boundary in the crown word number region, further comprises：
If at least two minimum pixel accumulated values are calculated, the moving direction of first sliding window is referred to, it will be with
The up-and-down boundary of the overlay area of corresponding first sliding window of minimum pixel accumulated value finally obtained is determined as described
The up-and-down boundary in crown word number region.
6. according to the method described in claim 1, it is characterized in that, the gray-scale map in the up-and-down boundary carries out
Binary conversion treatment forms binary image, including：
Binary conversion treatment is carried out to the gray-scale map in the up-and-down boundary by row, and binary conversion treatment is completed to each row
Afterwards, the projection result of the row is calculated；
The left side that the crown word number region is determined according to overlay area of second sliding window at different shift positions
Right margin, including：
According to the row for including from overlay area of second sliding window at different shift positions, and the throwing that respectively arranges
Shadow is as a result, calculate separately the projection result accumulated value of each overlay area；
According to the processing mode of the binary conversion treatment, extreme value vertex type is determined；
In each projection result accumulated value, the target projection result accumulated value with the extreme point type matching is obtained,
And by the right boundary of the overlay area of second sliding window corresponding with the target projection result accumulated value, it is determined as
The right boundary in the crown word number region.
7. according to the method described in claim 1, it is characterized in that, according to second sliding window in different shift positions
After the overlay area at place determines the right boundary in the crown word number region, further include：
In the gray-scale map of the crown word number region of search, crown word number area is determined according to the up-and-down boundary and the right boundary
Domain gray-scale map；
Divided in equal amounts is carried out according to the character quantity of crown word number to the crown word number area grayscale figure, forms multiple cut zone；
Binary conversion treatment is carried out respectively to the multiple cut zone.
8. a kind of identification device in crown word number region, which is characterized in that including：
Up-and-down boundary determining module, for moving the first sliding window, and root line by line on the gray-scale map of crown word number region of search
The up-and-down boundary in crown word number region is determined according to overlay area of first sliding window at different shift positions；
Binary processing module forms binaryzation for carrying out binary conversion treatment to the gray-scale map in the up-and-down boundary
Image；
Right boundary determining module, for moving the second sliding window by column on the binary image, and according to described the
Overlay area of two sliding windows at different shift positions determines the right boundary in the crown word number region.
9. a kind of computer equipment, including memory, processor and storage are on a memory and the meter that can run on a processor
Calculation machine program, which is characterized in that the processor realizes the side as described in any in claim 1-7 when executing described program
Method.
10. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the program is by processor
The method as described in any in claim 1-7 is realized when execution.
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