CN107369243A - A kind of recognition methods of bank note, device, terminal device and computer-readable storage medium - Google Patents
A kind of recognition methods of bank note, device, terminal device and computer-readable storage medium Download PDFInfo
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- CN107369243A CN107369243A CN201710485728.1A CN201710485728A CN107369243A CN 107369243 A CN107369243 A CN 107369243A CN 201710485728 A CN201710485728 A CN 201710485728A CN 107369243 A CN107369243 A CN 107369243A
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Abstract
The present invention relates to paper money recognition technical field, proposes a kind of recognition methods of bank note, device, terminal device and computer-readable storage medium.Methods described includes：The light for obtaining target bank note becomes hollow out safety line region；Become hollow out safety line region to the light and enter every trade projection, and the result projected according to row determines that the light becomes in hollow out safety line region the initial point position for specifying hollow picture and text；The safe line segment to be verified of the target bank note is determined according to the initial point position；The safe line segment to be verified of the target bank note is become into hollow out safety line with the light of standard bank note to be matched, obtains matching result；If for the matching result for the match is successful, it is normal bank note to judge the target bank note；If the matching result judges the target bank note for abnormal bank note for it fails to match.Said process successfully identifies the hollow picture and text that bank note light becomes in hollow out safety line, and completes paper money recognition using the strong security feature of hollow picture and text, improves the accuracy rate of paper money recognition.
Description
Technical field
The present invention relates to paper money recognition technical field, more particularly to a kind of recognition methods of bank note, device, terminal device and
Computer-readable storage medium.
Background technology
In recent years, light becomes hollow out safety line and is applied to more and more widely on all kinds of bank note, such as the people of version in 2015
The yuan note of coin 100, the hollow picture and text become by the light in hollow out safety line can judge the version and the true and false of bank note well.
However, the hollow picture and text that bank note light becomes in hollow out safety line can be identified by not having a kind of Paper Currency Identification at present, can not incite somebody to action
The strong security feature of hollow picture and text is efficiently applied in paper money recognition field.
The content of the invention
In view of this, the embodiments of the invention provide a kind of recognition methods of bank note, device, terminal device and computer to deposit
Storage media, the hollow picture and text that bank note light becomes in hollow out safety line can be identified.
The first aspect of the embodiment of the present invention provides a kind of recognition methods of bank note, including：
The light for obtaining target bank note becomes hollow out safety line region；
Become hollow out safety line region to the light and enter every trade projection, and determine that the light becomes hollow out according to the result of row projection
The initial point position of hollow picture and text is specified in safety line region；
The safe line segment to be verified of the target bank note is determined according to the initial point position；
The safe line segment to be verified of the target bank note is become into hollow out safety line with the light of standard bank note to be matched, obtained
Matching result；
If for the matching result for the match is successful, it is normal bank note to judge the target bank note；
If the matching result judges the target bank note for abnormal bank note for it fails to match.
The second aspect of the embodiment of the present invention provides a kind of identification device of bank note, including：
Region acquisition module, the light for obtaining target bank note become hollow out safety line region；
Initial point position determining module, enter every trade projection for becoming hollow out safety line region to the light, and thrown according to row
The result of shadow determines that the light becomes in hollow out safety line region the initial point position for specifying hollow picture and text；
Safe line segment determining module to be verified, for determining the to be verified of the target bank note according to the initial point position
Safe line segment；
Matching module, for the light of the safe line segment to be verified of the target bank note and standard bank note to be become into hollow out safety line
Matched, obtain matching result；
First determination module, if for the matching result for the match is successful, it is regular paper to judge the target bank note
Coin；
Second determination module, if judging the target bank note for abnormal paper for it fails to match for the matching result
Coin.
The third aspect of the embodiment of the present invention provides a kind of terminal device, including memory, processor and is stored in
In the memory and the computer program that can run on the processor, described in the computing device during computer program
The step of recognition methods of the bank note provided such as the first aspect of the embodiment of the present invention is provided.
The fourth aspect of the embodiment of the present invention provides a kind of computer-readable recording medium, the computer-readable storage
Media storage has computer program, and the first aspect such as the embodiment of the present invention is realized when the computer program is executed by processor
The step of recognition methods of the bank note of offer.
In embodiments of the present invention, the light for obtaining target bank note becomes hollow out safety line region；Become hollow out safety to the light
Every trade projection is entered in line region, and determines that the light becomes according to the result of row projection and hollow picture and text is specified in hollow out safety line region
Initial point position；The safe line segment to be verified of the target bank note is determined according to the initial point position；By the target bank note
The light of safe line segment to be verified and standard bank note become hollow out safety line and matched, obtain matching result；If the matching knot
For fruit for the match is successful, then it is normal bank note to judge the target bank note；If described in the matching result for it fails to match, judges
Target bank note is abnormal bank note.Said process determines that light becomes using the method for row projection and hollow picture and text is included in hollow out safety line
Safe line segment to be verified, the safe line segment to be verified is become into hollow out safety line with the light of normal bank note and matched, both contrasts
Hollow picture and text whether match, successfully identify bank note light become hollow out safety line in hollow picture and text, finally according to the knot of matching
Fruit judges whether bank note to be verified is normal bank note, completes paper money recognition using the strong security feature of hollow picture and text, improves
The accuracy rate of paper money recognition.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
In the required accompanying drawing used be briefly described, it should be apparent that, drawings in the following description be only the present invention some
Embodiment, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these
Accompanying drawing obtains other accompanying drawings.
Fig. 1 is a kind of flow chart of one embodiment of the recognition methods of bank note provided in an embodiment of the present invention；
Fig. 2 is a kind of flow chart of second embodiment of the recognition methods of bank note provided in an embodiment of the present invention；
Fig. 3 is a kind of flow chart of the 3rd embodiment of the recognition methods of bank note provided in an embodiment of the present invention；
Fig. 4 is a kind of structure chart of one embodiment of the identification device of bank note provided in an embodiment of the present invention；
Fig. 5 is a kind of schematic diagram of terminal device provided in an embodiment of the present invention.
Embodiment
In describing below, in order to illustrate rather than in order to limit, it is proposed that such as tool of particular system structure, technology etc
Body details, thoroughly to understand the embodiment of the present invention.However, it will be clear to one skilled in the art that there is no these specific
The present invention can also be realized in the other embodiments of details.In other situations, omit to well-known system, device, electricity
Road and the detailed description of method, in case unnecessary details hinders description of the invention.
The embodiments of the invention provide a kind of recognition methods of bank note, device, terminal device and computer-readable storage medium, energy
Enough identify the hollow picture and text that bank note light becomes in hollow out safety line.
Referring to Fig. 1, a kind of one embodiment of the recognition methods of bank note includes in the embodiment of the present invention：
101st, the light for obtaining target bank note becomes hollow out safety line region；
The target bank note is bank note to be verified, can become hollow out safety line with light and in safety line have to engrave
Any type, the bank note of version of empty graph text, such as RMB, Hongkong dollar etc..The light for obtaining target bank note becomes hollow out safety line
Region, light change hollow out safety line is extracted from target bank note, is easy to follow-up paper money recognition to operate.For safety line position
Put for fixed bank note, the band of position easily can be obtained according to default fixed coordinates value.However, some bank note
Light become hollow out safety line position be not it is changeless, such as 100 yuans of version in 2015, now can not basis
Default fixed coordinates value obtains the band of position.
Further, the revocable target bank note of the safe line position of hollow out is become for light, step 101 can include：
(1) ranks projection is entered to the designated area of the target bank note, obtains each row pixel in the designated area
Cumulative gray value；
(2) region where cumulative gray value to be less than to the row pixel of default gray threshold is defined as the target bank note
Light become hollow out safety line region.
The designated area is one piece of region (i.e. safety line that light becomes residing for hollow out safety line possibility in the target bank note
Position Approximate), enter ranks projection when this subregion need to only be performed, amount of calculation can be reduced.Because light becomes hollow out peace
The gray value of the row projected image in all fronts region is much smaller relative to other regions of target bank note, is obtained by arranging projection
In designated area after the cumulative gray value of each row pixel, cumulative gray value can be less than to the row pixel of default gray threshold
The light that region where point is defined as the target bank note becomes hollow out safety line region.The gray threshold can be based on experience value
Set, for example 20 can be set to.
102nd, become hollow out safety line region to the light and enter every trade projection, and determine that the light becomes according to the result of row projection
The initial point position of hollow picture and text is specified in hollow out safety line region；
The light for getting target bank note becomes after hollow out safety line region, every trade projection is entered to the region, and throw according to row
The result of shadow determines that the light becomes in hollow out safety line the initial point position for specifying hollow picture and text.The specified hollow picture and text rises
Initial point position can be the arbitrary portion of any hollow picture and text, such as 100 yuans for version in 2015, can be hollow out
The edge point position of picture and text " $ ", can be any portion of the location of hollow picture and text " 1 " or other hollow picture and texts
The location of point.Light can be got by row projection and become the location of all hollow picture and texts in hollow out safety line, from this
The initial point position of these hollow picture and texts is specified in a little positions.Clearly as hollow picture and text has repeatability (such as version in 2015
100 yuans of " $100 " be repeatedly distributed in light and become in hollow out safety line), it may be determined that multiple initial point positions (ratio
Such as the location of each hollow picture and text " 1 ").The light can be obtained and become to engrave by becoming hollow out safety line region to light and entering every trade projection
The cumulative gray value of each row pixel in empty safety line region, then further according to hollow picture and text and the other white spaces of safety line it
Between grey value difference can find out the location of hollow picture and text.
103rd, the safe line segment to be verified of the target bank note is determined according to the initial point position；
It is determined that the light becomes in hollow out safety line after the initial point position of specified hollow picture and text, according to the starting point
Position determines the safe line segment to be verified of the target bank note.The safe line segment to be verified needs the safety line with standard bank note
Matching checking is carried out, is that the light of the target bank note becomes a part for hollow out safety line.Can be by the whole piece of the target bank note
Light becomes hollow out safety line and is all used as a safe line segment to be verified, can also be divided into light change hollow out safety line multiple to be tested
Demonstrate,prove safe line segment.When dividing safe line segment to be verified should according to determined by step 102 initial point position, ensure each to be tested
Demonstrate,prove safe line segment and comprise at least an initial point position.
104th, the safe line segment to be verified of the target bank note is become into hollow out safety line with the light of standard bank note to be matched,
Obtain matching result；
It is determined that after safe line segment to be verified, the light of the safe line segment to be verified and standard bank note is become into hollow out safety
Line is matched, and obtains matching result.The standard bank note be identify target bank note reference standard, its type, version and institute
It is identical to state target bank note.When being matched, positioned using the initial point position in safe line segment to be verified, with true
Calibrate the part for being used to be matched with the safe line segment to be verified in the safety line of quasi- bank note.The success or not of matching result
It can be determined according to the size of matching degree, if becoming the matching of hollow out safety line than the light of safe line segment to be verified and normal bank note
Degree is more than default threshold value (such as 95%), it is determined that is that the match is successful, is otherwise defined as that it fails to match.
Further, in actual applications, step 104 can be one of following 3 kinds of modes：
(1) light of the row projection grey-value curve of the safe line segment to be verified and standard bank note is become into hollow out safety line
The row projection grey-value curve of image sections is specified to carry out Curve Matching, if Curve Matching success, it is determined that the matching knot
Fruit is the match is successful；
Row projection grey-value curve described in mode (1) refers to the ash built according to row coordinate value and corresponding cumulative gray value
Angle value curve, represent the variation tendency of cumulative gray value corresponding to each row pixel.The row of safe line segment to be verified can be thrown
It is poor that row projection grey-value curve corresponding to shadow gray value curve and standard bank note is made, and judges the curve according to the size of difference
With whether succeeding.
(2) light of the gray value of the safe line segment to be verified and standard bank note is become to the specified image sections of hollow out safety line
Gray value carry out gray value matching, if the match is successful for the gray value, it is determined that the matching result is the match is successful；
Mode (2) becomes the light of the gray value of the safe line segment to be verified and standard bank note in the specified figure of hollow out safety line
, will the gray value of each pixel and the finger in the safe line segment to be verified as the gray value of section carries out gray value matching
The gray value for determining each pixel in image sections is matched, and obtains matching degree, can be true when matching degree is more than predetermined threshold value
The fixed matching result is the match is successful.
(3) light of the gray value of the safe line segment to be verified after binaryzation and standard bank note is become into hollow out safety line
The gray value of specified image sections after binaryzation carries out binaryzation gray value matching, if the match is successful for the binaryzation gray value,
Then determine the matching result for the match is successful.
The difference of mode (3) and mode (2) is：Before gray value matching is carried out to the safe line segment to be verified and
The specified image sections have carried out binary conversion treatment, can simplify matching process, reduce amount of calculation.
105th, judge whether the matching result is that the match is successful；
If the matching result for the match is successful, performs step 106；If the matching result is held for it fails to match
Row step 107.
106th, judge that the target bank note is normal bank note；
If matching result shows that the hollow picture and text feature of target bank note is consistent with standard bank note for the match is successful, can
To judge the target bank note as normal bank note.
107th, judge that the target bank note is abnormal bank note.
For it fails to match, if the hollow picture and text feature and standard bank note for showing target bank note are not inconsistent matching result, can
To judge bank note of the target bank note as exception.The abnormal bank note is probably counterfeit money, it is also possible to which safety line has what is be stained
Genuine note.
In embodiments of the present invention, the light for obtaining target bank note becomes hollow out safety line region；Become hollow out safety to the light
Every trade projection is entered in line region, and determines that the light becomes according to the result of row projection and hollow picture and text is specified in hollow out safety line region
Initial point position；The safe line segment to be verified of the target bank note is determined according to the initial point position；By the target bank note
The light of safe line segment to be verified and standard bank note become hollow out safety line and matched, obtain matching result；If the matching knot
For fruit for the match is successful, then it is normal bank note to judge the target bank note；If described in the matching result for it fails to match, judges
Target bank note is abnormal bank note.Said process determines that light becomes using the method for row projection and hollow picture and text is included in hollow out safety line
Safe line segment to be verified, the safe line segment to be verified is become into hollow out safety line with the light of normal bank note and matched, both contrasts
Hollow picture and text whether match, successfully identify bank note light become hollow out safety line in hollow picture and text, finally according to the knot of matching
Fruit judges whether bank note to be verified is normal bank note, completes paper money recognition using the strong security feature of hollow picture and text, improves
The accuracy rate of paper money recognition.
Referring to Fig. 2, a kind of second embodiment of recognition methods of bank note includes in the embodiment of the present invention：
201st, the light for obtaining target bank note becomes hollow out safety line region；
Step 201 is identical with step 101, specifically can refer to the related description of step 101.
202nd, become hollow out safety line region to the light and enter every trade projection, obtain the light and become each in hollow out safety line region
The cumulative gray value of row pixel；
After the light for getting target bank note becomes hollow out safety line region, every trade projection is entered to the region, is obtained described
Light becomes the cumulative gray value of each row pixel in hollow out safety line region, i.e. the every gray value of all pixels point in row pixel
Accumulated value.
203rd, the detection light is slided in a column direction using the sliding window of predetermined width become hollow out safety line region；
After row projection terminates, the detection light is slided in a column direction using the sliding window of predetermined width and becomes hollow out safety
Line region, i.e., detected from top to bottom along the safety line region of target bank note, or along the safety line region of target bank note from
Under up detect.The width of the sliding window is the width on the column direction set according to empirical value, for example is set to 6 pixels
Point, i.e., each moment can detect the cumulative gray value of 6 row pixels.
If the 204th, detect the cumulative gray value of each row pixel that first area includes and included with second area
Each row pixel cumulative gray value and between difference be more than default first threshold, then by sliding window described in current time
Row coordinate value corresponding to specified location is defined as the light and becomes in hollow out safety line region the starting point for specifying hollow picture and text in mouthful
Position；
In the sliding process of the sliding window, if certain moment detects the tired of each row pixel that first area includes
Add the cumulative gray value of each row pixel that is gray value and being included with second area and between difference be more than default the
One threshold value, then by row coordinate value corresponding to specified location in sliding window described in current time, (row coordinate value herein is row
Coordinate value on direction, line number corresponding to expression) it is defined as specifying hollow picture and text in the light change hollow out safety line region
Initial point position.The first area and the second area are to form the sliding window by preset ratio horizontal division
Two regions, for example for the sliding window that width is 6 pixels, can be divided equally into two has 3 pixels wide
The region of degree.The specified location can be the optional position in the current time sliding window in a column direction, preferably institute
State the division position between first area and second area.By the detection of sliding window, the safety of target bank note can be found
There is the position of mutation in the gray value that added up in line, these positions may be considered the boundary between hollow picture and text and white space
(because the gray value between hollow picture and text and the white space of safety line has larger difference), so that it is determined that to specify hollow out
The initial point position of picture and text.
205th, become using the initial point position as partitioning standards in the light of the target bank note in hollow out safety line region and drawn
Separate more than two image sections；
It is determined that the light becomes in hollow out safety line region after the initial point position of specified hollow picture and text, with the starting
Point position is that partitioning standards mark off more than two image sections in the light change hollow out safety line region of the target bank note, and
Image sections more than will be described two are defined as the safe line segment to be verified of the target bank note., can be by institute in concrete application
State the part in the light change hollow out safety line region of target bank note between each two initial point position and be divided into a described image
Section；Can be using each initial point position as starting point, the position after pre-determined distance (such as the length of hollow picture and text in a column direction)
Each described image section is marked off for terminal；Region division where multiple initial point positions can also be entered same institute
State image sections.
206th, each image sections in image sections more than will be described two become hollow out safety with the light of standard bank note respectively
The specified image sections of line are matched, and obtain the matching degree of each described image section；
After these image sections are obtained, these image sections are become into specifying for hollow out safety line with the light of standard bank note respectively
Image sections are matched, and obtain the matching degree of each described image section, the specified quasi- bank note of image sections index of the standard bank note
Light become hollow out safety line in image sections corresponding with each described image fragment position.
207th, judge whether the matching degree of each described image section is all higher than default 4th threshold value；
After the matching degree of each described image section is obtained, judge they whether be all higher than default threshold value (such as
95%), if then performing step 208, otherwise performing step 209.
Optionally, in view of the light of some genuine notes becomes the region that hollow out safety line there may be parts against wear, in order to avoid inciting somebody to action
These genuine notes are included into abnormal bank note, matching result being determined as to, the condition that the match is successful replaces with：
(1) quantity of the light change hollow out safety line image sections that the match is successful of each normal bank note of described image Duan Zhongyu is big
In default threshold value, it is somebody's turn to do the image sections that the match is successful and refers to the image sections that matching degree is more than predetermined threshold value；
Such as a total of 6 sections of image sections, can be using given threshold as 4, when the light in 6 sections of image sections with normal bank note becomes
When the quantity of the hollow out safety line image sections that the match is successful is more than 4 (the match is successful for 5 sections or more of image sections), you can to incite somebody to action
Overall matching result is defined as that the match is successful.
(2) each described image section matching degree and more than default threshold value, or the matching of each described image section
The product of degree is more than default threshold value.
Assuming that there is 5 image sections, their matching degree is respectively A1、A2、A3、A4And A5If A1+A2+A3+A4+A5Or A1*
A2*A3*A4*A5Value be more than default threshold value, then judge the matching result for the match is successful, otherwise judge the matching knot
Fruit is it fails to match.It should be noted that the purpose of above-mentioned formula computing is the matching degree journey for considering each image sections
Degree, those skilled in the art, which should be appreciated that, to carry out computing using other formula.
Further, after judging that the matching degree for obtaining each described image section is all higher than default 4th threshold value, with
And the matching result is determined as that before the match is successful, can also include：
(1) respectively described two image sections above are entered with ranks projection, is obtained each in the image sections more than described two
The cumulative gray value of individual image sections in a column direction；
(2) the cumulative gray value of each described image section in a column direction is become into hollow out safety with the light of standard bank note respectively
The cumulative gray value of the standard of the specified image sections of line in a column direction is matched；
(3) if the cumulative gray value of each described image section in a column direction adds up with the standard, gray value matches into
Work(, it is determined that the otherwise matching result determines the matching result for it fails to match for the match is successful.
Above-mentioned steps (1) to (3) obtain the cumulative gray value of each image sections in a column direction, by these gray values that add up
Become the cumulative gray value of the standard of the specified image sections of hollow out safety line in a column direction with the light of standard bank note respectively to be matched,
The specified image sections are the image sections in the safety line of standard bank note with each image sections position correspondence.Come for some counterfeit moneys
Say, the row projection grey-value of its safety line is identical with standard bank note, but the row projection grey-value of its safety line and standard bank note
Have bigger difference, these counterfeit moneys can be recognized accurately by step (1) to (3), further improve paper money recognition accuracy rate.
208th, the matching result is judged for the match is successful, and the target bank note is normal bank note；
If the matching degree of each described image section is all higher than default 4th threshold value, illustrate the matching result for matching
Success, shows that the hollow picture and text feature of target bank note is consistent with standard bank note, it is possible to determine that the target bank note is normal bank note.
209th, the matching result is judged for it fails to match, and the target bank note is abnormal bank note.
If the matching degree of each described image section is not to be all higher than default 4th threshold value, illustrate that the matching result is
It fails to match, and the hollow picture and text feature and standard bank note for showing target bank note are not inconsistent, it is possible to determine that the target bank note is abnormal
Bank note.The abnormal bank note is probably counterfeit money, it is also possible to which safety line has the genuine note being stained.
In embodiments of the present invention, the light for obtaining target bank note becomes hollow out safety line region；Become hollow out safety to the light
Every trade projection is entered in line region, obtains the cumulative gray value that the light becomes each row pixel in hollow out safety line region；Using default
The sliding window of width slides the detection light and becomes hollow out safety line region in a column direction；If detect what first area included
Each row pixel that is cumulative gray value and being included with second area of each row pixel cumulative gray value and between difference
Value is more than default first threshold, then row coordinate value corresponding to specified location in sliding window described in current time is defined as into institute
State light and become in hollow out safety line region the initial point position for specifying hollow picture and text；It is partitioning standards in institute using the initial point position
State in the light change hollow out safety line region of target bank note and mark off more than two image sections, and will described two images above
Section is defined as the safe line segment to be verified of the target bank note；Each image sections in image sections more than will be described two are distinguished
The specified image sections for becoming hollow out safety line with the light of standard bank note are matched, and obtain the matching degree of each described image section；Sentence
Whether the matching degree for each described image section of breaking is all higher than default 4th threshold value；If the matching degree of each described image section is big
In default 4th threshold value, the matching result is judged for the match is successful, the target bank note is normal bank note；It is if each described
The matching degree of image sections is not to be all higher than default 4th threshold value, judges the matching result for it fails to match, the target basis
Coin is abnormal bank note.Said process determines that light becomes to be verified comprising hollow picture and text in hollow out safety line using the method for row projection
Safe line segment, the safe line segment to be verified is become into hollow out safety line with the light of normal bank note and matched, contrasts both hollow outs
Whether picture and text match, and successfully identify the hollow picture and text that bank note light becomes in hollow out safety line, are finally judged according to the result of matching
Whether bank note to be verified is normal bank note, completes paper money recognition using the strong security feature of hollow picture and text, improves bank note knowledge
Other accuracy rate.
Referring to Fig. 3, a kind of the 3rd embodiment of recognition methods of bank note includes in the embodiment of the present invention：
301st, the light for obtaining target bank note becomes hollow out safety line region；
Step 301 is identical with step 101, specifically can refer to the related description of step 101.
302nd, become hollow out safety line region to the light and enter every trade projection, obtain the light and become each in hollow out safety line region
The cumulative gray value of row pixel；
After the light for getting target bank note becomes hollow out safety line region, every trade projection is entered to the region, is obtained described
Light becomes the cumulative gray value of each row pixel in hollow out safety line region, i.e. the every gray value of all pixels point in row pixel
Accumulated value.
303rd, the detection light is slided in a column direction using the sliding window of predetermined width become hollow out safety line region；
After row projection terminates, the detection light is slided in a column direction using the sliding window of predetermined width and becomes hollow out safety
Line region, i.e., detected from top to bottom along the safety line region of target bank note, or along the safety line region of target bank note from
Under up detect.The width of the sliding window is the width on the column direction set according to empirical value, for example is set to 6 pixels
Point, i.e., each moment can detect the cumulative gray value of 6 row pixels.
If the 304th, detect the cumulative gray value of each row pixel that the 3rd region includes and included with the 4th region
Each row pixel cumulative gray value and between difference be more than default Second Threshold, then by sliding window described in current time
Row coordinate value corresponding to specified location is defined as target line coordinate value in mouthful；
In the sliding process of the sliding window, if certain moment detects the tired of each row pixel that the 3rd region includes
Add the cumulative gray value of each row pixel that is gray value and being included with the 4th region and between difference be more than default the
Two threshold values, then row coordinate value corresponding to specified location in sliding window described in current time is defined as target line coordinate value.Institute
It is two regions for forming the sliding window by preset ratio horizontal division to state the 3rd region and the 4th region, such as
For the sliding window that width is 6 pixels, two regions with 3 pixel width can be divided equally into.It is described
Specified location can be the optional position in the current time sliding window in a column direction, preferably described 3rd region and
Division position between four regions.Difference with step 204 is that step 304 does not directly determine the specified location found
For the initial point position of the specified hollow picture and text.
305th, the target location region where the target line coordinate value and the first row coordinate value is obtained respectively；
Where the target line coordinate value and the first row coordinate value it is determined that after the target line coordinate value, is obtained respectively
Target location region, the first row coordinate value are each of preset standard value integral multiple for the difference with the target line coordinate value
Individual row coordinate value, the preset standard value become two adjacent specified hollow out figures in hollow out safety line for the light of standard bank note
Row coordinate difference between text.Assuming that the target line coordinate value is the initial point position of the specified hollow picture and text really, by
Repeatedly to be arranged according to certain spacing in safety line in hollow picture and text, thus with the difference of the target line coordinate value
The initial point position for belonging to the specified hollow picture and text is should also be as each row coordinate value of preset standard value integral multiple.The mesh
Target location region where mark row coordinate value and the first row coordinate value refers to the target for including the row coordinate value correspondence position
Designated area on bank note safety line, its width in a column direction are identical with the width of the sliding window.
306th, by the cumulative gray value of each row pixel included in all target location regions got corresponding
It is overlapped respectively on each row, each row pixel for obtaining including in the target location region where the target line coordinate value
First gray value；
By the cumulative gray value of each row pixel included in all target location regions got in corresponding each row
It is upper to be overlapped respectively, obtain the first of each row pixel included in the target location region where the target line coordinate value
Gray value.Assuming that getting target location region A, B and C, they respectively include 6 row pixels, then by A, B and C the first row picture
The cumulative gray value of vegetarian refreshments is overlapped, and obtains the first gray value of the first row pixel；By A, B and C the second row pixel
Cumulative gray value be overlapped, obtain the first gray value ... of the second row pixel, by that analogy.Most it is calculated at last
These first gray values be defined as each row pixel included in the target location region where the target line coordinate value
First gray value.
307th, each row pixel that the 5th region includes in the target location region where the target line coordinate value is judged
Each row pixel that is the first gray value and being included with the 6th region the first gray value and between difference whether be more than
Default 3rd threshold value；
5th region and the 6th region are by pre- by the target location region where the target line coordinate value
If proportional level divides two regions to be formed.Due to step 307 calculate be the first gray value (multiple cumulative gray values it is folded
It is value added) difference, the 3rd threshold value should be set must be bigger than the Second Threshold in step 304.The mesh determined in step 304
It is position of the gray value in the presence of mutation of being added up in target bank note safety line corresponding to mark row coordinate value, the position is probably the finger
Determine the initial point position of hollow picture and text, it is also possible to be simply stained a little present in target bank note safety line.If target line coordinate
It is the initial point position of the specified hollow picture and text corresponding to value, then is the specified hollow picture and text corresponding to the first row coordinate value
Initial point position, i.e., the position of mutation be present in the gray value that added up corresponding to the first row coordinate value and in target bank note safety line
Put, so that each row picture that is the first gray value and being included with the 6th region for each row pixel that the 5th region includes
Vegetarian refreshments the first gray value and between difference be more than the 3rd threshold value.And if simply dirt corresponding to target line coordinate value
Point is damaged, then the blank position being likely to corresponding to the first row coordinate value in safety line, i.e., is not corresponding to the first row coordinate value
There is the position of mutation in the gray value that added up in target bank note safety line, therefore the of each row pixel for including of the 5th region
Each row pixel that is one gray value and being included with the 6th region the first gray value and between difference it is not more than described
3rd threshold value.The influence being stained a little in target bank note safety line be present it can be seen that can effectively weaken by step 303 to 307, it is accurate
Really find out the initial point position of specified hollow picture and text.
If the first of each row pixel that the 5th region includes in the target location region where the target line coordinate value
Each row pixel that is gray value and being included with the 6th region the first gray value and between difference be more than the default 3rd
Threshold value, then perform step 308；If each row picture that the 5th region includes in the target location region where the target line coordinate value
Each row pixel that is the first gray value and being included with the 6th region of vegetarian refreshments the first gray value and between difference be not
More than the 3rd threshold value, then ignore the target line coordinate value found, return to step 303 continues to detect, to determine down
One target line coordinate value, untill the initial point position of the specified hollow picture and text is found.
308th, the target line coordinate value and the first row coordinate value are defined as the light and become hollow out safety line region
In specify hollow picture and text initial point position；
309th, become using the initial point position as partitioning standards in the light of the target bank note in hollow out safety line region and drawn
Separate more than two image sections；
It is determined that the light becomes in hollow out safety line region after the initial point position of specified hollow picture and text, with the starting
Point position is that partitioning standards mark off more than two image sections in the light change hollow out safety line region of the target bank note.Tool
In body application, the light of the target bank note can be become to the part in hollow out safety line region between each two initial point position and drawn
It is divided into a described image section；Can be using each initial point position as starting point, (for example hollow picture and text is in a column direction for pre-determined distance
Length) after position mark off each described image section for terminal；Can also be by the area where multiple initial point positions
Domain is partitioned into same described image section.
310th, the gray value superposition of each image sections in image sections more than will be described two and averaged, are obtained
First image sections；
After the image sections more than described two are marked off, gray value superposition and averaged by these image sections,
The first image sections are obtained, the gray value of described first image section is the average gray value of the image sections more than described two.
The 311st, specified image sections that described first image section is become to hollow out safety line with the light of standard bank note are matched, and are obtained
To the matching degree of described first image section；
When being matched, positioned using the initial point position in the first image sections, to determine standard bank note
Safety line in be used for the part that is matched with described first image section, i.e., described specified image sections.
312nd, judge whether the matching degree of described first image section is more than default 6th threshold value；
After the matching degree of described first image section is obtained, judge whether the matching degree is more than default 6th threshold value,
If then perform step 313, otherwise perform step 314.
313rd, the matching result is judged for the match is successful, and the target bank note is normal bank note；
If the matching degree of described first image section is more than default 6th threshold value, illustrate the matching result for matching into
Work(, show that the hollow picture and text feature of target bank note is consistent with standard bank note, it is possible to determine that the target bank note is normal bank note.
314th, the matching result is judged for it fails to match, and the target bank note is abnormal bank note.
If the matching degree of described first image section is not greater than default 6th threshold value, it is to illustrate the matching result
With failure, the hollow picture and text feature and standard bank note for showing target bank note are not inconsistent, it is possible to determine that the target bank note is abnormal paper
Coin.Abnormal bank note is probably counterfeit money, it is also possible to which safety line has the genuine note being stained.
In embodiments of the present invention, the light for obtaining target bank note becomes hollow out safety line region；Become hollow out safety to the light
Every trade projection is entered in line region, obtains the cumulative gray value that the light becomes each row pixel in hollow out safety line region；Using default
The sliding window of width slides the detection light and becomes hollow out safety line region in a column direction；If detect what the 3rd region included
Each row pixel that is cumulative gray value and being included with the 4th region of each row pixel cumulative gray value and between difference
Value is more than default Second Threshold, then row coordinate value corresponding to specified location in sliding window described in current time is defined as into mesh
Mark row coordinate value；The target location region where the target line coordinate value and the first row coordinate value is obtained respectively；It will get
All target location regions in the cumulative gray value of each row pixel that includes be overlapped respectively on corresponding each row, obtain
First gray value of each row pixel included into the target location region where the target line coordinate value；Judge the mesh
Each row pixel for including of 5th region the first gray value and with the 6th in target location region where mark row coordinate value
Each row pixel that region includes the first gray value and between difference whether be more than default 3rd threshold value；If then will
The target line coordinate value and the first row coordinate value are defined as the light and become specified hollow picture and text in hollow out safety line region
Initial point position；Become using the initial point position as partitioning standards in the light of the target bank note in hollow out safety line region and drawn
Separate more than two image sections；The gray value of each image sections in image sections more than will be described two is superimposed and asks for putting down
Average, obtain the first image sections；The specified image sections that the light of described first image section and standard bank note is become to hollow out safety line are entered
Row matching, obtains the matching degree of described first image section；Judge whether the matching degree of described first image section is more than default the
Six threshold values；If then judging the matching result for the match is successful, the target bank note is normal bank note, otherwise judges described
With result for it fails to match, the target bank note is abnormal bank note.Said process can accurately find out rising for specified hollow picture and text
Initial point position, and become hollow out safety line using the light of the first image sections with average gray value and standard bank note in matching
Specified image sections matched, indivedual hollow picture and texts in target bank note can be eliminated and the harmful effect for being stained and bringing be present, entered
One step improves the accuracy rate of paper money recognition.
It should be understood that the size of the sequence number of each step is not meant to the priority of execution sequence in above-mentioned each embodiment, respectively
The execution sequence of process should determine that the implementation process without tackling the embodiment of the present invention forms any with its function and internal logic
Limit.
A kind of recognition methods of bank note is essentially described above, a kind of identification device of bank note will be retouched in detail below
State.
Referring to Fig. 4, a kind of one embodiment of the identification device of bank note includes in the embodiment of the present invention：
Region acquisition module 401, the light for obtaining target bank note become hollow out safety line region；
Initial point position determining module 402, enter every trade projection for becoming hollow out safety line region to the light, and according to row
The result of projection determines that the light becomes in hollow out safety line region the initial point position for specifying hollow picture and text；
Safe line segment determining module 403 to be verified, for determining treating for the target bank note according to the initial point position
Verify safe line segment；
Matching module 404, for the light of the safe line segment to be verified of the target bank note and standard bank note to be become into hollow out peace
Completely matched, obtain matching result；
First determination module 405, if judging that the target bank note is normal for the matching result for the match is successful
Bank note；
Second determination module 406, if for the matching result for it fails to match, it is exception to judge the target bank note
Bank note.
The embodiment of the present invention also provides a kind of terminal device, including memory, processor and is stored in the memory
In and the computer program that can run on the processor, such as Fig. 1 is realized described in the computing device during computer program
The step of recognition methods of any one bank note represented to Fig. 3.
The embodiment of the present invention also provides a kind of computer-readable recording medium, and the computer-readable recording medium storage has
Computer program, realized when the computer program is executed by processor such as the identification of Fig. 1 to Fig. 3 any one bank note represented
The step of method.
Fig. 5 is the schematic diagram for the terminal device that one embodiment of the invention provides.As shown in figure 5, the terminal of the embodiment is set
Standby 5 include：Processor 50, memory 51 and it is stored in the meter that can be run in the memory 51 and on the processor 50
Calculation machine program 52.The processor 50 realizes the implementation of the recognition methods of above-mentioned each bank note when performing the computer program 52
Step in example, such as step 101 shown in Fig. 1 is to 107.Or the processor 50 is when performing the computer program 52
Realize the function of each module/unit in above-mentioned each device embodiment, such as the function of module 401 to 406 shown in Fig. 4.
The computer program 52 can be divided into one or more module/units, and one or more of modules/
Unit is stored in the memory 51, and is performed by the processor 50, to complete the present invention.One or more of moulds
Block/unit can be the series of computation machine programmed instruction section that can complete specific function, the instruction segment by describe it is described based on
Implementation procedure of the calculation machine program 52 in the terminal device 5.
The terminal device 5 can be various types of mobile phones, desktop PC, notebook, palm PC and high in the clouds
The computing devices such as server.The terminal device may include, but be not limited only to, processor 50, memory 51.People in the art
Member is appreciated that Fig. 5 is only the example of terminal device 5, does not form the restriction to terminal device 5, can include than diagram
More or less parts, some parts or different parts are either combined, such as the terminal device 5 can also include
Input-output equipment, network access equipment, bus etc..
Alleged processor 50 can be CPU (Central Processing Unit, CPU), can also be
Other general processors, digital signal processor (Digital Signal Processor, DSP), application specific integrated circuit
(Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field-
Programmable Gate Array, FPGA) either other PLDs, discrete gate or transistor logic,
Discrete hardware components etc..General processor can be microprocessor or the processor can also be any conventional processor
Deng.
The memory 51 can be the internal storage unit of the terminal device 5, such as the hard disk of terminal device 5 or interior
Deposit.The memory 51 can also be the External memory equipment of the terminal device 5, such as be equipped with the terminal device 5
Plug-in type hard disk, intelligent memory card (Smart Media Card, SMC), secure digital (Secure Digital, SD) card, dodge
Deposit card (Flash Card) etc..Further, the memory 51 can also both include the storage inside list of the terminal device 5
Member also includes External memory equipment.The memory 51 is used to store needed for the computer program and the terminal device
Other programs and data.The memory 51 can be also used for temporarily storing the data that has exported or will export.
It is apparent to those skilled in the art that for convenience of description and succinctly, only with above-mentioned each work(
Can unit, module division progress for example, in practical application, can be as needed and by above-mentioned function distribution by different
Functional unit, module are completed, i.e., the internal structure of described device are divided into different functional units or module, more than completion
The all or part of function of description.Each functional unit, module in embodiment can be integrated in a processing unit, also may be used
To be that unit is individually physically present, can also two or more units it is integrated in a unit, it is above-mentioned integrated
Unit can both be realized in the form of hardware, can also be realized in the form of SFU software functional unit.In addition, each function list
Member, the specific name of module are not limited to the protection domain of the application also only to facilitate mutually distinguish.Said system
The specific work process of middle unit, module, the corresponding process in preceding method embodiment is may be referred to, will not be repeated here.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, the corresponding process in preceding method embodiment is may be referred to, will not be repeated here.
In the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, and is not described in detail or remembers in some embodiment
The part of load, it may refer to the associated description of other embodiments.
Those of ordinary skill in the art are it is to be appreciated that the list of each example described with reference to the embodiments described herein
Member and algorithm steps, it can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
Performed with hardware or software mode, application-specific and design constraint depending on technical scheme.Professional and technical personnel
Described function can be realized using distinct methods to each specific application, but this realization is it is not considered that exceed
The scope of the present invention.
In embodiment provided by the present invention, it should be understood that disclosed apparatus and method, others can be passed through
Mode is realized.For example, system embodiment described above is only schematical, for example, the division of the module or unit,
Only a kind of division of logic function, can there is an other dividing mode when actually realizing, such as multiple units or component can be with
With reference to or be desirably integrated into another system, or some features can be ignored, or not perform.It is another, it is shown or discussed
Mutual coupling or direct-coupling or communication connection can be by some interfaces, the INDIRECT COUPLING of device or unit or
Communication connection, can be electrical, mechanical or other forms.
The unit illustrated as separating component can be or may not be physically separate, show as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.Above-mentioned integrated list
Member can both be realized in the form of hardware, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and is used as independent production marketing or use
When, it can be stored in a computer read/write memory medium.Based on such understanding, the present invention realizes above-described embodiment side
All or part of flow in method, by computer program the hardware of correlation can also be instructed to complete, described computer
Program can be stored in a computer-readable recording medium, and the computer program can be achieved above-mentioned each when being executed by processor
The step of individual embodiment of the method.Wherein, the computer program includes computer program code, and the computer program code can
Think source code form, object identification code form, executable file or some intermediate forms etc..The computer-readable medium can be with
Including：Any entity or device, recording medium, USB flash disk, mobile hard disk, magnetic disc, the light of the computer program code can be carried
Disk, computer storage, read-only storage (ROM, Read-Only Memory), random access memory (RAM, Random
Access Memory), electric carrier signal, telecommunication signal and software distribution medium etc..It should be noted that the computer
The content that computer-readable recording medium includes can carry out appropriate increase and decrease according to legislation in jurisdiction and the requirement of patent practice, such as
In some jurisdictions, according to legislation and patent practice, computer-readable medium does not include being electric carrier signal and telecommunications letter
Number.
Embodiment described above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although with reference to foregoing reality
Example is applied the present invention is described in detail, it will be understood by those within the art that：It still can be to foregoing each
Technical scheme described in embodiment is modified, or carries out equivalent substitution to which part technical characteristic；And these are changed
Or replace, the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme, all should
Within protection scope of the present invention.
Claims (10)
- A kind of 1. recognition methods of bank note, it is characterised in that including：The light for obtaining target bank note becomes hollow out safety line region；Become hollow out safety line region to the light and enter every trade projection, and determine that the light becomes hollow out safety according to the result of row projection The initial point position of hollow picture and text is specified in line region；The safe line segment to be verified of the target bank note is determined according to the initial point position；The safe line segment to be verified of the target bank note is become into hollow out safety line with the light of standard bank note to be matched, matched As a result；If for the matching result for the match is successful, it is normal bank note to judge the target bank note；If the matching result judges the target bank note for abnormal bank note for it fails to match.
- 2. the recognition methods of bank note as claimed in claim 1, it is characterised in that the light for obtaining target bank note becomes hollow out peace All fronts region includes：Ranks projection is entered to the designated area of the target bank note, obtains the cumulative gray scale of each row pixel in the designated area Value；The light that region where cumulative gray value to be less than to the row pixel of default gray threshold is defined as the target bank note becomes Hollow out safety line region.
- 3. the recognition methods of bank note as claimed in claim 1, it is characterised in that described that hollow out safety line region is become to the light Enter every trade projection, and determine that the light becomes the starting point of specified hollow picture and text in hollow out safety line region according to the result of row projection Position includes：Become hollow out safety line region to the light and enter every trade projection, obtain the light and become each row pixel in hollow out safety line region Cumulative gray value；The detection light is slided in a column direction using the sliding window of predetermined width becomes hollow out safety line region；If detect the cumulative gray value of each row pixel that first area includes and each row pixel included with second area Point cumulative gray value and between difference be more than default first threshold, then will be specified in sliding window described in current time The row coordinate value of position correspondence is defined as the light and becomes in hollow out safety line region the initial point position for specifying hollow picture and text, described First area and the second area are two regions that the sliding window is pressed to the formation of preset ratio horizontal division.
- 4. the recognition methods of bank note as claimed in claim 1, it is characterised in that described that hollow out safety line region is become to the light Enter every trade projection, and determine that the light becomes the starting point of specified hollow picture and text in hollow out safety line region according to the result of row projection Position includes：Become hollow out safety line region to the light and enter every trade projection, obtain the light and become each row pixel in hollow out safety line region Cumulative gray value；The detection light is slided in a column direction using the sliding window of predetermined width becomes hollow out safety line region；If detect the cumulative gray value of each row pixel that the 3rd region includes and each row pixel included with the 4th region Point cumulative gray value and between difference be more than default Second Threshold, then will be specified in sliding window described in current time The row coordinate value of position correspondence is defined as target line coordinate value, and the 3rd region and the 4th region are by the sliding window Two regions that mouth is formed by preset ratio horizontal division；The target location region where the target line coordinate value and the first row coordinate value, the first row coordinate value are obtained respectively For with each row coordinate value that the difference of the target line coordinate value is preset standard value integral multiple, the target location region exists Width on column direction is identical with the width of the sliding window, and the preset standard value becomes hollow out safety for the light of standard bank note Row coordinate difference in line between two adjacent specified hollow picture and texts；The cumulative gray value of each row pixel included in all target location regions got is divided on corresponding each row It is not overlapped, obtains the first gray scale of each row pixel included in the target location region where the target line coordinate value Value；If the first gray scale of each row pixel that the 5th region includes in the target location region where the target line coordinate value Each row pixel that is value and being included with the 6th region the first gray value and between difference be more than default 3rd threshold value, The target line coordinate value and the first row coordinate value are then defined as the light and become specified hollow out in hollow out safety line region The initial point position of picture and text, the 5th region and the 6th region are by the target location where the target line coordinate value Press two regions that preset ratio horizontal division is formed in region.
- 5. the recognition methods of bank note as claimed in claim 1, it is characterised in that described that institute is determined according to the initial point position Stating the safe line segment to be verified of target bank note includes：Become using the initial point position as partitioning standards in the light of the target bank note in hollow out safety line region and mark off two More than image sections, and will it is described two more than image sections be defined as the safe line segment to be verified of the target bank note；The safe line segment to be verified by the target bank note becomes hollow out safety line with the light of standard bank note and matched, and obtains Matching result includes：Each image sections in image sections more than will be described two become specifying for hollow out safety line with the light of standard bank note respectively Image sections are matched, and obtain the matching degree of each described image section；If the matching degree of each described image section is all higher than default 4th threshold value, judge the matching result for matching into Work(, otherwise judge the matching result for it fails to match；OrIf each described image section matching degree and more than default 5th threshold value, judge the matching result for matching into Work(, otherwise judge the matching result for it fails to match；OrIf the product of the matching degree of each described image section is more than default 6th threshold value, judge the matching result for matching into Work(, otherwise judge the matching result for it fails to match.
- 6. the recognition methods of bank note as claimed in claim 1, it is characterised in that described that institute is determined according to the initial point position Stating the safe line segment to be verified of target bank note includes：Become using the initial point position as partitioning standards in the light of the target bank note in hollow out safety line region and mark off two Image sections above；The gray value superposition of each image sections in image sections more than will be described two and averaged, obtain the first image Section；Described first image section is defined as to the safe line segment to be verified of the target bank note；The safe line segment to be verified by the target bank note becomes hollow out safety line with the light of standard bank note and matched, and obtains Matching result includes：The specified image sections that the light of described first image section and standard bank note is become to hollow out safety line are matched, and obtain described the The matching degree of one image sections；If the matching degree of described first image section is more than default 7th threshold value, judge the matching result for the match is successful；If the matching degree of described first image section is less than or equal to the 7th threshold value, judge that the matching result loses for matching Lose.
- 7. the recognition methods of the bank note as described in claim 5 or 6, it is characterised in that in the peace to be verified of the target bank note After the light of all fronts section and standard bank note becomes hollow out safety line the match is successful, and determine the matching result for the match is successful it Before, in addition to：Respectively described two image sections above are entered with ranks projection, obtains each image sections in the image sections more than described two Cumulative gray value in a column direction；Light of the cumulative gray value of each described image section in a column direction respectively with standard bank note is become into the finger of hollow out safety line Determine the cumulative gray value of the standard of image sections in a column direction to be matched；If the cumulative gray value of each described image section in a column direction adds up with the standard, the match is successful for gray value, really Otherwise the fixed matching result determines the matching result for it fails to match for the match is successful.
- A kind of 8. identification device of bank note, it is characterised in that including：Region acquisition module, the light for obtaining target bank note become hollow out safety line region；Initial point position determining module, enter every trade projection for becoming hollow out safety line region to the light, and according to row projection As a result determine that the light becomes in hollow out safety line region the initial point position for specifying hollow picture and text；Safe line segment determining module to be verified, for determining the safety to be verified of the target bank note according to the initial point position Line segment；Matching module, carried out for the light of the safe line segment to be verified of the target bank note and standard bank note to be become into hollow out safety line Matching, obtains matching result；First determination module, if for the matching result for the match is successful, it is normal bank note to judge the target bank note；Second determination module, if judging the target bank note for abnormal bank note for it fails to match for the matching result.
- 9. a kind of terminal device, including memory, processor and it is stored in the memory and can be on the processor The computer program of operation, it is characterised in that realize such as claim 1 to 7 described in the computing device during computer program Any one of bank note recognition methods the step of.
- 10. a kind of computer-readable recording medium, the computer-readable recording medium storage has computer program, and its feature exists In the recognition methods of bank note of the realization as any one of claim 1 to 7 when the computer program is executed by processor The step of.
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| CN111915792A (en) * | 2020-05-19 | 2020-11-10 | 武汉卓目科技有限公司 | Method and device for identifying zebra crossing image-text |
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| CN107369243B (en) | 2019-08-27 |
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