CN107016318A - A kind of bar code decoding method and device - Google Patents
A kind of bar code decoding method and device Download PDFInfo
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- CN107016318A CN107016318A CN201710170774.2A CN201710170774A CN107016318A CN 107016318 A CN107016318 A CN 107016318A CN 201710170774 A CN201710170774 A CN 201710170774A CN 107016318 A CN107016318 A CN 107016318A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
- G06K7/1404—Methods for optical code recognition
- G06K7/1408—Methods for optical code recognition the method being specifically adapted for the type of code
- G06K7/1413—1D bar codes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
- G06K7/1404—Methods for optical code recognition
- G06K7/146—Methods for optical code recognition the method including quality enhancement steps
- G06K7/1486—Setting the threshold-width for bar codes to be decoded
Abstract
The invention discloses a kind of bar code decoding method and device, to solve prior art bar code in ink overflow or overexposure, when the empty width of bar changes, the problem of decoding is inaccurate is likely to result in.This method includes：The first ratio of the empty width of bar of each mark character in bar code to be decoded is determined, mark character includes bebinning character and/or final character；Second ratio of the empty width of bar in the standard form of each mark character of the type of identification bar code to be decoded；The scaling determined according to the first ratio and the second ratio is adjusted to the bar width or empty width in each decoding character, and each decoding character after adjustment is decoded.Due in embodiments of the present invention, the empty width of bar is adjusted according to scaling, the empty width of bar after adjustment is more nearly the empty width of bar of standard, the empty change width of the bar of bar code caused by decrease bar code ink overflow or the situation of overexposure, decoding character after adjustment is decoded, decoding accuracy can be effectively improved.
Description
Technical field
The present invention relates to barcode technology field, more particularly to a kind of bar code decoding method and device.
Background technology
Barcode technology be grow up on computer technology and Information Technology Foundation a collection coding, printing, identification,
The emerging technology of data acquisition and processing (DAP).Barcode technology is because its identification is quick, accurate, reliable and cost is low excellent
Point, is widely used in the fields such as business, taking care of books, storage, post and telecommunications, traffic and Industry Control, and certainly will be gradually emerging
Play great in " Internet of Things " application served.
In the bar code detection scheme of view-based access control model system, Bar code positioning and bar code decoding are broadly divided into.In bar code decoding mistake
How Cheng Zhong, improve the accuracy of decoding, is always an important research topic.
Existing bar code decoding scheme mainly includes：1st, the template matching algorithm based on bar width：It is aerial by record strip
The number of contained pixel determines the empty width of bar, and the template of the width of determination and normal width match and determined pair
The code value answered.2nd, average distance method：The overall width of the bar code is drawn after the original position for orienting bar code, according to the total mould of bar code
Plate length and overall width, obtain the pixel count of unit template, and then measure each empty width in bar code, by determination
Width carries out matching with the template of normal width and determines corresponding code value.3rd, similar back gauge method：It is empty by calculating adjacent strip
Width sum, is matched to decode with the empty width sum of the adjacent strip of standard character template, if but result of calculation it is similar or
When barcode encoding logic is not rigorous, then decoding may mistake.4th, by template matching algorithm of the method 1 based on bar width and side
The similar back gauge method of method 3 is combined, and is decoded using similar back gauge method, the result phase drawn for similar back gauge method
Like or the not rigorous situation of barcode encoding logic, using bar width template matching algorithm carry out error compensation, solved
Code.
When being decoded using each above-mentioned method to bar code, the empty width of bar in the accuracy and bar code of decoding has directly
Relation, but because the other problemses such as printing, the empty width of bar may be inaccurate, such as in the case of ink overflow or overexposure, bar is empty
Width will change, and it is possible that adjacent strip sky width sum is identical.Therefore existing bar code decoding side is used
Method, it would be possible to cause the inaccurate of decoding.
The content of the invention
The present invention provides a kind of bar code decoding method and device, to solve in the prior art bar code in ink overflow or overexposure feelings
Under condition, when the empty width of bar changes, the problem of decoding is inaccurate is likely to result in.
To reach above-mentioned purpose, the embodiment of the invention discloses a kind of bar code decoding method, methods described includes：
The first ratio of the bar width of each mark character and empty width in bar code to be decoded is determined, wherein, the mark
Character learning symbol includes bebinning character and/or final character；
According to the type of the bar code to be decoded, the standard form of each mark character of the bar code of the type is recognized
In bar width and empty width the second ratio；
According to first ratio and second ratio, the pantograph ratio of each decoding character in bar code to be decoded is determined
Example；
The bar width or empty width in each decoding character are adjusted according to the scaling, to bar width
Or empty width be adjusted after each decoding character decoded.
Further, it is described according to first ratio when the mark character includes bebinning character and final character
With second ratio, determining the scaling of each decoding character in bar code to be decoded includes：
According to the first ratio of bebinning character and second ratio, each decoding character in bar code to be decoded is determined
First sub- scaling；
According to the first ratio of final character and second ratio, each decoding character in bar code to be decoded is determined
Second sub- scaling；
According to the described first sub- scaling and the second sub- scaling, determine each to decode in bar code to be decoded
The scaling of character.
Further, first ratio for determining the bar width of each mark character and empty width in bar code to be decoded
Including：
According to the pixel being located in bar code to be decoded at least two horizontal scanning lines, recognize on every horizontal scanning line
The bar width of each mark character and the first sub- ratio of empty width, according to the first sub- ratio on every horizontal scanning line with
And the bar number of horizontal scanning line, determine the first ratio of the bar width of each mark character and empty width in the bar code to be decoded
Value.
Further, it is described that the bar width or empty width in each decoding character are carried out according to the scaling
Adjustment, each decoding character after being adjusted to bar width or empty width, which carries out decoding, to be included：
The empty width or bar width of each decoding character of identification, according to the scaling to empty width or the bar width
It is adjusted；
Bar width and the unadjusted empty width after adjustment in each decoding character or the empty width after adjustment with
Unadjusted bar width, it is determined that each decoding character after the corresponding each adjustment of decoding character, to the decoding after each adjustment
Character is decoded.
Further, it is determined that the type of the bar code to be decoded includes：
Recognize the empty width of the bar of bebinning character and/or final character of the bar code to be decoded；
It is empty wide according to the standard bar of the corresponding bebinning character of each type of bar code and/or final character pre-saved
Degree, and the empty width of the bar recognized, determine the type of the bar code to be decoded.
The embodiment of the invention discloses a kind of bar code decoding device, described device includes：
Determining module, the first ratio for determining the bar width of each mark character and empty width in bar code to be decoded
Value, wherein, the mark character includes bebinning character and/or final character；
Identification module, for the type according to the bar code to be decoded, recognizes each mark of the bar code of the type
Second ratio of bar width and empty width in the standard form of character；
The determining module, is additionally operable to, according to first ratio and second ratio, determine in bar code to be decoded
The scaling of each decoding character；
Decoder module is adjusted, for each decoding in the bar code to be decoded according to the scaling and the type
The width of character is adjusted to the bar width and empty width in each decoding character, to each decoding character after adjustment
Decoded.
Further, the determining module, specifically for the first ratio according to bebinning character and second ratio, really
First sub- scaling of each decoding character in fixed bar code to be decoded；According to the first ratio of final character and described second
Ratio, determines the second sub- scaling of each decoding character in bar code to be decoded；According to the described first sub- scaling and
The second sub- scaling, determines the scaling of each decoding character in bar code to be decoded.
Further, the determining module, specifically for according to being located at least two horizontal scanning lines in bar code to be decoded
On pixel, the bar width and the first sub- ratio of empty width of each mark character on every horizontal scanning line of identification；According to
The bar number of the first sub- ratio and horizontal scanning line on every horizontal scanning line, determines each to mark in the bar code to be decoded
First ratio of the bar width of character learning symbol and empty width.
Further, the adjustment decoder module, specifically for the empty width or bar width of each decoding character of identification, root
Empty width or the bar width is adjusted according to the scaling；The bar width after adjustment in each decoding character
With empty width and the unadjusted bar width after unadjusted empty width or adjustment, each adjusted it is determined that each decoding character is corresponding
Decoding character after whole, is decoded to the decoding character after each adjustment.
Further, the determining module, is additionally operable to recognize the bebinning character of the bar code to be decoded and/or terminates word
The empty width of the bar of symbol；According to the corresponding bebinning character of each type of bar code and/or the standard bar of final character pre-saved
Empty width, and the empty width of the bar recognized, determine the type of the bar code to be decoded.
The embodiment of the invention discloses a kind of bar code decoding method and device, methods described includes：Determine bar to be decoded
First ratio of the bar width of each mark character and empty width in code, wherein, the mark character include bebinning character and/or
Final character；According to the type of the bar code to be decoded, the master die of each mark character of the bar code of the type is recognized
Second ratio of bar width and empty width in plate；According to first ratio and second ratio, bar to be decoded is determined
The scaling of each decoding character in code；According to the scaling to the bar width or empty wide in each decoding character
Degree is adjusted, and each decoding character after being adjusted to bar width or empty width is decoded.Due in present invention implementation
In example, the first ratio of the bar width of bebinning character and/or final character in bar code to be decoded and empty width is determined, and according to
The second ratio and first ratio of the empty width of bar in the standard form of bebinning character and/or final character determine each solution
The scaling of code character, is adjusted according to the scaling to the bar width or empty width in each decoding character
It is whole, so that the bar width or empty width after adjustment are more nearly the corresponding bar width or empty width of standard, weaken bar code and overflow
The empty change width of bar caused by the situation of ink or overexposure in bar code, and then can to the decoding character progress decoding after adjustment
It is effective to improve decoding accuracy.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of bar code decoding process schematic that the embodiment of the present invention 1 is provided；
Fig. 2 is a kind of bar code decoding process schematic provided in an embodiment of the present invention；
Fig. 3 A are a kind of bar code for occurring ink overflow situation provided in an embodiment of the present invention；
Fig. 3 B are a kind of bar code for occurring ink overflow situation provided in an embodiment of the present invention；
Fig. 4 is a kind of decoding apparatus structure chart that the embodiment of the present invention 1 is provided.
Embodiment
In order that bar code is in the case of ink overflow or overexposure, the accuracy of bar code decoding is improved, the embodiments of the invention provide
A kind of bar code decoding method and device.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1 is a kind of bar code decoding process schematic that the embodiment of the present invention 1 is provided, and the process comprises the following steps：
S101：The first ratio of the bar width of each mark character and empty width in bar code to be decoded is determined, wherein, institute
Stating mark character includes bebinning character and/or final character.
Bar code decoding method provided in an embodiment of the present invention can apply to electronic equipment, and the electronic equipment can be hand-held
It is the bar code readers such as formula barcode reader, fixed barcode reader or mobile phone with bar code decoding function, flat
The terminal devices such as plate computer.The electronic equipment can recognize the position of each mark character in the bar code to be decoded,
And the bar width in mark character and empty width can be identified.Electronic equipment at the position of each mark character of identification,
The position of the mark character can be determined according to the identification information of each mark character, the identification information can be the mark
Bar width and empty width in character learning symbol.Electronic equipment, can be according to the gray scale of pixel when recognizing bar width and empty width
The coordinate of value and pixel is recognized.The process of the position of mark character in the identification bar code to be decoded belongs to
Prior art, in embodiments of the present invention to the process without being described in detail.Bar in each mark character of identification is wide
The process of degree and empty width belongs to prior art, in embodiments of the present invention to the process without being described in detail.
The bar width and the empty width can be in the mark character the overall width of all and have time
The empty width on bar width and predeterminated position on overall width or predeterminated position.When identify mark character in bar
After width and empty width, it is possible to determine the first ratio of the bar width and empty width.Bar on the predeterminated position is wide
Empty width on degree and predeterminated position, for example, can be that the mark character includes two bars and two skies, the default position
It can be first bar and first sky to put, it is determined that the bar width and the first of empty width that identifier word is accorded with bar code to be decoded
During ratio, then the width and the first ratio of first empty width of first bar in the mark character can be determined
Value, the mark character can also be bebinning character, can be final character or bebinning character and final character.
S102：According to the type of the bar code to be decoded, the mark of each mark character of the bar code of the type is recognized
Second ratio of bar width and empty width in quasi-mode plate.
Electronic equipment is when bar code to be decoded is arrived in scanning, it may be determined that go out the type of the bar code to be decoded, every kind of
Each mark character of the bar code of type has bar width and empty width in its corresponding standard form, the standard form to be to determine
's.Bar width and empty width in the standard form of determination, it is determined that each bar in the standard form of mark character
Second ratio of width and empty width.The bar width and the empty width can be identified described in standard form in character
The sky on bar width and predeterminated position on the overall width of all and the overall width or predeterminated position had time is wide
Degree.The mark character can be bebinning character, can be final character or bebinning character and final character.
It is determined that when the first ratio and the second ratio, what the mark character that bar code to be decoded is used was used with standard form
It is identical to identify character, i.e., when the mark character that bar code to be decoded is used is bebinning character, and the standard form is used
Mark character also be bebinning character, when the mark character that bar code to be decoded is used is final character, the standard form
The mark character used is also for final character.
The determination method of first ratio and second ratio is identical, and it is the overall width of all that can be
With the ratio of had time overall width or be the empty width on bar width and predeterminated position on predeterminated position ratio
Value.
When the mark character is the bebinning character and final character, the first ratio of each mark character is being determined
Value and during the second ratio, judges the of the first ratio of bebinning character in bar code to be decoded and the bebinning character of standard form
First ratio of the final character in the first difference of two ratios, and bar code to be decoded and the final character of standard form
Second difference of the second ratio, corresponding first ratio of mark character and the second ratio for taking difference minimum.
S103：According to first ratio and second ratio, each decoding character in bar code to be decoded is determined
Scaling.
After the first ratio and the second ratio is determined, can according to first ratio and second ratio, it is determined that
The scaling of each decoding character in bar code to be decoded, can be specifically using the business of the first ratio and the second ratio as
3rd ratio or the business using the second ratio and the first ratio are as the 3rd ratio, and the 3rd ratio is to wait to solve
The scaling of each decoding character in the bar code of code.When the 3rd ratio is the business of the first ratio and the second ratio, such as
Really described 3rd ratio is more than 1, then illustrates that the bar width in the bar code to be decoded becomes big, empty width diminishes, then described to treat
The bar code of decoding occurs in that ink overflow situation；If the 3rd ratio is less than 1, illustrate that the bar in the bar code to be decoded is wide
Degree diminishes, and empty width becomes big, then the bar code occurs in that overexposure situation；If the 3rd ratio is equal to 1, illustrate described treat
The bar code of decoding is normal, ink overflow or the situation of overexposure does not occur.It is possible thereby to which class is released, when the 3rd ratio is second
During the business of ratio and the first ratio, the situation of change of bar width and empty width in the bar code to be decoded, it is believed that this area
Technical staff can be according to embodiments of the present invention description, it is determined that corresponding embodiment, herein without being described in detail.
S104：The bar width or empty width in each decoding character are adjusted according to the scaling, it is right
Each decoding character after bar width or empty width are adjusted is decoded.
After the scaling is determined, it is possible to know the bar code to be decoded occur in that ink overflow situation or
The situation of overexposure is occurred in that, so that it is determined that the bar width and empty width that go out in the bar code to be decoded to decode character are to carry out
Amplification adjustment or progress diminution adjustment, to make the bar width after adjustment or empty width be more nearly the corresponding bar of standard form
Width or empty width.So after the scaling is determined, can be according to the scaling to each decoded word
Bar width or empty width in symbol are adjusted, and can be specifically, the empty width or bar width of each decoding character of identification, root
Empty width or the bar width is adjusted according to the scaling.
Empty width or the bar width, which is adjusted, according to scaling can include a variety of methods, for example, when described
Scaling is the business of the first ratio and the second ratio, when corresponding 3rd ratio of scaling is more than 1, is then illustrated to be decoded
Bar width in bar code becomes big, and empty width diminishes, then the bar code to be decoded occurs in that ink overflow situation, now can will described in
Article width divided by the 3rd ratio, so as to be reduced to the bar width in the bar code to be decoded, by the empty width
The 3rd ratio is multiplied by be amplified the empty width in the bar code to be decoded.
After the bar width or empty width in each decoding character are adjusted, it is possible to each after adjustment
Decoding character decode.In decoding, template width matching process, or similar back gauge measuring method can be used,
Or both combine, or other coding/decoding method.The process that each decoding character after described pair of adjustment is decoded
Belong to prior art, in embodiments of the present invention to the process without repeating.
Due in embodiments of the present invention, determining the bar width of bebinning character and/or final character in bar code to be decoded
With the first ratio of empty width, and according to the second ratio of the empty width of bar in the standard form of bebinning character and/or final character
Value and first ratio determine the scaling of each decoding character, according to the scaling to each decoding character
In bar width or empty width be adjusted so that the bar width or empty width after adjustment are more nearly the corresponding bar of standard
The empty change width of bar caused by the situation of width or empty width, decrease bar code ink overflow or overexposure in bar code, and then to adjustment
Decoding character afterwards, which carries out decoding, can effectively improve decoding accuracy.
Embodiment 2：
For the accuracy of the scaling that further improves determination, so as to further reach raising decoding accuracy
Effect, on the basis of above-described embodiment, the present invention implement in, when it is described mark character include bebinning character and terminate word
Fu Shi, it is described according to first ratio and second ratio, determine the scaling of each decoding character in bar code to be decoded
Ratio includes：
According to the first ratio of bebinning character and second ratio, each decoding character in bar code to be decoded is determined
First sub- scaling；
According to the first ratio of final character and second ratio, each decoding character in bar code to be decoded is determined
Second sub- scaling；
According to the described first sub- scaling and the second sub- scaling, determine each to decode in bar code to be decoded
The scaling of character.
In embodiments of the present invention, when the mark character is bebinning character or final character, first ratio is
Bebinning character in the ratio of the bar width of each mark character and empty width, i.e., bar code to be decoded in the bar code to be decoded
There is final character in its corresponding first ratio, bar code to be decoded to have its corresponding first ratio.
First ratio of final character can in first ratio of bebinning character and bar code to be decoded in bar code to be decoded
With identical or difference.
Second ratio is the bar width and the ratio of empty width, i.e. banner word in the standard form of each mark character
The standard form of symbol has its corresponding second ratio, and the standard form of final character has its corresponding second ratio.
When the mark character is bebinning character and final character, it is determined that each decoding character in bar code to be decoded
Can be specifically first, according to the first ratio and second ratio of bebinning character, to determine bar to be decoded during scaling
First sub- scaling of each decoding character in code, and the first ratio and second ratio according to final character, really
Second sub- scaling of each decoding character in fixed bar code to be decoded, further according to the described first sub- scaling and described the
Two sub- scalings, determine the scaling of each decoding character in bar code to be decoded.Can be specifically that the first son contracts
The average value for putting ratio and the second sub- scaling is defined as the scaling, this determination scaling of averaging
Method, the scaling of determination can be made more accurate.
It is determined that can be according on any one horizontal scanning line when first sub- scaling and the second sub- scaling
Bar width and sky in the bar width of bebinning character to be decoded and empty first ratio of width and the standard form of bebinning character
Second ratio of width determines a sub- scaling, wide according to the bar of the final character to be decoded on any one horizontal scanning line
Second ratio of bar width and empty width in degree and empty first ratio of width and the standard form of final character determines second
Sub- scaling.For the accuracy of the scaling that further improves determination, raising decoding accuracy is further reached
Effect, it is in embodiments of the present invention, described to determine the bar width of each mark character and empty width in bar code to be decoded
First ratio includes：
According to the pixel being located in bar code to be decoded at least two horizontal scanning lines, recognize on every horizontal scanning line
The bar width of each mark character and the first sub- ratio of empty width；
According to the bar number of the first sub- ratio and horizontal scanning line on every horizontal scanning line, determine described to be decoded
First ratio of the bar width of each mark character and empty width in bar code.
In embodiments of the present invention, at least two horizontal scanning lines can be located at the optional position of bar code to be decoded
On, in order to further improve the accuracy of decoding, direction that can be by bar code to be decoded along bar code, according to default decile
Number, is divided into some equal portions, every cut-off rule constitutes a horizontal scanning line using cut-off rule by the bar code to be decoded.Institute
It can carry out 3 deciles to state default decile number, then corresponding horizontal scanning line is 2 or carries out 2 deciles, then right
The horizontal scanning line answered is 1.Decile number is more, and corresponding horizontal scanning line is more, and every horizontal scanning line is parallel.
When horizontal scanning line is at least two, according to the pixel being located in bar code to be decoded at least two horizontal scanning lines
Point, identifies the bar width and empty width in each mark character on every horizontal scanning line, and determine on the horizontal scanning line
Each mark character in bar width and empty width the first sub- ratio, compared according to the first son on every horizontal scanning line
The bar number of value and horizontal scanning line, determine each mark character in the bar code to be decoded article width and empty width the
One ratio.Can be specifically that the first sub- ratio that correspondence on every horizontal scanning line is identified into character is added, then divided by institute
State the bar number of horizontal scanning line, will the mark character all first sub- ratios average value as the mark character first ratio
Value.
For example, horizontal scanning line is 3, the sub- ratio of bebinning character first on this 3 horizontal scanning lines is respectively 1.0,1.2,
1.1, the ratio of bebinning character first is (1.0+1.1+1.2)/3=1.1.
When scanning line number is more, the process for determining the first sub- ratio can also be arranged each first sub- ratio
Sequence, takes the on centrally located first sub- ratio as the first ratio.For example, horizontal scanning line is 5, this 5 horizontal scanning lines
First sub- ratio of upper final character is respectively 1.0,1.2,1.1,1.0,1.3, and the first all sub- ratio is entered from small to large
Row is ordered as：1.0th, 1.0,1.1,1.2,1.3, the on centrally located first sub- ratio is taken as the first sub- ratio, then institute
The first ratio for stating final character is 1.1.
When horizontal scanning line only has one, then the first sub- ratio of each mark character on the horizontal scanning line is regard as this
Identify the first ratio of character.
When horizontal scanning line is at least two, when it is determined that each identifying the first ratio of character, identical can be used
Method is determined, it would however also be possible to employ different methods is determined.
Each mark character has bebinning character in its first corresponding sub- ratio, i.e., bar code to be decoded to have its correspondence
The first sub- ratio, final character has its corresponding first sub- ratio in bar code to be decoded.Treating on every horizontal scanning line solves
The first of final character in bar code to be decoded in the bar code of code on the first sub- ratio and this horizontal scanning line of bebinning character
Sub- ratio can be with identical or difference.
The first ratio determined above by a plurality of horizontal scanning line is more accurate.
Embodiment 3：
When the bar width and empty width in decoding character are adjusted, can be only adjustment bar width or
Empty width is only adjusted, in order that the bar width and empty width in each decoding character after adjustment are more accurate, is further reached
The effect of the accuracy of decoding is improved, it is in embodiments of the present invention, described according to the contracting on the basis of the various embodiments described above
Put ratio to be adjusted the bar width or empty width in each decoding character, after being adjusted bar width or empty width
Each decoding character carry out decoding include：
The empty width or bar width of each decoding character of identification, according to the scaling to empty width or the bar width
It is adjusted；
Bar width and the unadjusted empty width after adjustment in each decoding character or the empty width after adjustment with
Unadjusted bar width, it is determined that each decoding character after the corresponding each adjustment of decoding character, to the decoding after each adjustment
Character is decoded.
In embodiments of the present invention, wide to the bar width or sky in each decoding character according to the scaling
Can be the bar width or empty width of each decoding character of identification, according to the scaling to described every when degree is adjusted
Bar width or empty width in individual decoding character are adjusted, and according to the bar width after each adjustment decoded in character and not
Empty width and unadjusted bar width after the empty width of adjustment or adjustment, it is determined that each after the corresponding each adjustment of decoding character
Decoding character.
, specifically can be with it is determined that during decoding character after the corresponding adjustment of decoding character for each decoding character
, if adjusted to the bar width in the decoding character, empty width not to be adjusted, then can be by the bar after adjustment
The decoding character that width is constituted with unadjusted empty width decodes character after being defined as the adjustment of the decoding character.If to the solution
Empty width in code character is adjusted, and bar width is not adjusted, then can be by the empty width after adjustment with not adjusting
Bar width constitute decoding character be defined as the adjustment of the decoding character after decode character.
After the bar width in decoding character or empty width are adjusted, it is possible to which the decoding character after adjustment is entered
Row is decoded.In decoding, template width matching process, or similar back gauge measuring method, or both knot can be used
Close, or other coding/decoding methods.The process that decoding character after described pair of adjustment is decoded belongs to prior art,
To the process without repeating in the embodiment of the present invention.
Include when being adjusted according to the scaling to the bar width or empty width in each decoding character many
The method of kind, for example, as the business that the scaling is the second ratio and the first ratio, corresponding 3rd ratio of scaling is more than
When 1, then illustrate that the bar width in bar code to be decoded diminishes, empty width becomes big, then the bar code to be decoded occurs in that overexposure
Situation, now can multiply the 3rd ratio by described article of width, so as to be carried out to the bar width in the bar code to be decoded
Amplify or by the empty width divided by the 3rd ratio, so as to enter to the empty width in the bar code to be decoded
Row reduces.
For each decoding character in the bar code in be decoded, the mode of adjustment is consistent, for example, can be equal root
Bar width is adjusted according to the scaling or empty width is adjusted all in accordance with the scaling.
Embodiment 4：
On the basis of the various embodiments described above, in embodiments of the present invention, the type bag of the bar code to be decoded is determined
Include：
Recognize the empty width of the bar of bebinning character and/or final character of the bar code to be decoded；
It is empty wide according to the standard bar of the corresponding bebinning character of each type of bar code and/or final character pre-saved
Degree, and the empty width of the bar recognized, determine the type of the bar code to be decoded.
In embodiments of the present invention, it is determined that the bar code to be decoded type when, can be according to bar to be decoded
What the bebinning character of code was determined, the standard bar that the corresponding bebinning character of each type of bar code is preserved in electronic equipment is empty wide
Degree, can be by the bar of identification when the empty width of the bar that electronic equipment recognizes the bebinning character of the bar code to be decoded
The empty width of the standard bar of empty width bebinning character corresponding with each type of bar code pre-saved is matched, by matching degree
Corresponding type when high, is defined as the type of the bar code to be decoded.
It is determined that the bar code to be decoded type when, can be according to the final character of bar code to be decoded determine
, the empty width of standard bar of the corresponding final character of each type of bar code is preserved in electronic equipment, when electronic equipment identification
To the final character of the bar code to be decoded bar empty width when, by the empty width of the bar of identification and can pre-save
The empty width of standard bar of the corresponding final character of each type of bar code is matched, by matching degree it is high when corresponding type, really
It is set to the type of the bar code to be decoded.
It is determined that the bar code to be decoded type when, can be the final character according to bar code to be decoded and starting
What character was determined, the standard bar that the corresponding bebinning character of each type of bar code and final character are preserved in electronic equipment is empty wide
Degree, when electronic equipment recognize the bar code to be decoded bebinning character and final character bar empty width when, will can know
The standard bar sky of the empty width of other bar bebinning character corresponding with each type of bar code pre-saved and final character
Width is matched, by matching degree it is high when corresponding type, be defined as the type of the bar code to be decoded.
Wherein electronic equipment is in the empty width of bar for recognizing the bebinning character of the bar code to be decoded and/or final character
Process belongs to prior art, in embodiments of the present invention without repeating.
Fig. 2 is a kind of bar code decoding process schematic provided in an embodiment of the present invention, and the process comprises the following steps：
S201：According to the pixel being located in bar code to be decoded at least two horizontal scanning lines, every row scanning is recognized
First sub- ratio of the bar width of each mark character on line and empty width；According to the first son on every horizontal scanning line
The bar number of ratio and horizontal scanning line, determine in the bar code to be decoded each mark character article width and empty width the
Character is identified described in one ratio includes bebinning character and/or final character.
S202：According to the type of the bar code to be decoded, the mark of each mark character of the bar code of the type is recognized
Second ratio of bar width and empty width in quasi-mode plate.
S203：According to the first ratio of bebinning character and second ratio, determine each to decode in bar code to be decoded
First sub- scaling of character；According to the first ratio of final character and second ratio, determine in bar code to be decoded
Second sub- scaling of each decoding character；According to the described first sub- scaling and the second sub- scaling, it is determined that
The scaling of each decoding character in bar code to be decoded.
S204：The empty width or bar width of each decoding character of identification, according to the scaling to the empty width or
Bar width is adjusted；The bar width after adjustment in each decoding character and the sky after unadjusted empty width or adjustment
Width and unadjusted bar width, it is determined that each decoding character after the corresponding each adjustment of decoding character, after each adjustment
Decoding character decoded.
Fig. 3 A are the bar code to be decoded provided in an embodiment of the present invention for occurring ink overflow situation, and the bar code to be decoded is
The bar width of the mark character of the code128 codes to be decoded of this in code128 codes, Fig. 3 A and the first ratio of empty width, than
Second ratio of bar width and empty width in the standard form of the mark character of the code128 codes is big, to be decoded to this
Bar code for code128 codes each decoding character in bar width and sky width be adjusted when, it is necessary to according to the first ratio
The scaling determined with the second ratio, the bar width decoded in character is turned down, empty width is tuned up.Adjustment mode can be used
Any one described in the various embodiments described above.
Fig. 3 B are the bar code to be decoded provided in an embodiment of the present invention for occurring ink overflow situation, and the bar code to be decoded is
The bar width of the mark character of the code128 codes to be decoded of this in code128 codes, Fig. 3 B and the first odds ratio institute of empty width
Second ratio of bar width and empty width in the standard form for the mark character for stating code128 codes is small, to be decoded to this
When bar code is adjusted for the bar width in each decoding character of code128 codes and sky width, it is necessary to according to the first ratio and
The scaling that second ratio is determined, the bar width decoded in character is tuned up, empty width is turned down.Adjustment mode can use upper
State any one described in each embodiment.
Fig. 4 is a kind of decoding apparatus structure chart that the embodiment of the present invention 1 is provided, and described device includes：
Determining module 41, the first ratio for determining the bar width of each mark character and empty width in bar code to be decoded
Value, wherein, the mark character includes bebinning character and/or final character；
Identification module 42, for the type according to the bar code to be decoded, recognizes each mark of the bar code of the type
Second ratio of bar width and empty width in the standard form of character learning symbol；
The determining module 41, is additionally operable to, according to first ratio and second ratio, determine bar code to be decoded
In each decoding character scaling；
Decoder module 43 is adjusted, for wide to the bar width or sky in each decoding character according to the scaling
Degree is adjusted, and each decoding character after being adjusted to bar width or empty width is decoded.
The determining module 41, specifically for the first ratio according to bebinning character and second ratio, it is determined that waiting to solve
First sub- scaling of each decoding character in the bar code of code；According to the first ratio of final character and second ratio,
Determine the second sub- scaling of each decoding character in bar code to be decoded；According to the described first sub- scaling and described
Two sub- scalings, determine the scaling of each decoding character in bar code to be decoded.
The determining module 41, specifically for according to the pixel being located in bar code to be decoded at least two horizontal scanning lines
The bar width of each mark character on point, every horizontal scanning line of identification and the first sub- ratio of empty width；According to described every
The bar number of the first sub- ratio and horizontal scanning line on horizontal scanning line, determines each mark character in the bar code to be decoded
First ratio of bar width and empty width.
The adjustment decoder module 43, specifically for the empty width or bar width of each decoding character of identification, according to described
Scaling is adjusted to empty width or the bar width；The bar width after adjustment in each decoding character is not with adjusting
Empty width and unadjusted bar width after whole empty width or adjustment, it is determined that each after the corresponding each adjustment of decoding character
Character is decoded, the decoding character after each adjustment is decoded.
The determining module 41, is additionally operable to recognize the bebinning character and/or the bar of final character of the bar code to be decoded
Empty width；According to the empty width of the standard bar of the corresponding bebinning character of each type of bar code and/or final character pre-saved,
And the empty width of the bar of identification, determine the type of the bar code to be decoded.
The embodiment of the invention discloses a kind of bar code decoding method and device, methods described includes：Determine bar to be decoded
First ratio of the bar width of each mark character and empty width in code, wherein, the mark character include bebinning character and/or
Final character；According to the type of the bar code to be decoded, the master die of each mark character of the bar code of the type is recognized
Second ratio of bar width and empty width in plate；According to first ratio and second ratio, bar to be decoded is determined
The scaling of each decoding character in code；According to the scaling to the bar width or empty wide in each decoding character
Degree is adjusted, and each decoding character after being adjusted to bar width or empty width is decoded.Due in present invention implementation
In example, the first ratio of the bar width of bebinning character and/or final character in bar code to be decoded and empty width is determined, and according to
The second ratio and first ratio of the empty width of bar in the standard form of bebinning character and/or final character determine each solution
The scaling of code character, is adjusted according to the scaling to the bar width or empty width in each decoding character
It is whole, so that the bar width or empty width after adjustment are more nearly the corresponding bar width or empty width of standard, weaken bar code and overflow
The empty change width of bar caused by the situation of ink or overexposure in bar code, and then can to the decoding character progress decoding after adjustment
It is effective to improve decoding accuracy.
For systems/devices embodiment, because it is substantially similar to embodiment of the method, so the comparison of description is simple
Single, the relevent part can refer to the partial explaination of embodiments of method.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or an operation make a distinction with another entity or another operation, and not necessarily require or imply these entities
Or there is any this actual relation or order between operation.
It should be understood by those skilled in the art that, embodiments herein can be provided as method, system or computer program
Product.Therefore, the application can use the reality of complete hardware embodiment, complete Application Example or connected applications and hardware aspect
Apply the form of example.Moreover, the application can be used in one or more computers for wherein including computer usable program code
The computer program production that usable storage medium is implemented on (including but is not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The application is the flow with reference to method, equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram are described.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram
Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided
The processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which is produced, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that in meter
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, thus in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
Although having been described for the preferred embodiment of the application, those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to include excellent
Select embodiment and fall into having altered and changing for the application scope.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the application to the application
God and scope.So, if these modifications and variations of the application belong to the scope of the application claim and its equivalent technologies
Within, then the application is also intended to comprising including these changes and modification.
Claims (10)
1. a kind of bar code decoding method, it is characterised in that methods described includes：
The first ratio of the bar width of each mark character and empty width in bar code to be decoded is determined, wherein, the identifier word
Symbol includes bebinning character and/or final character；
According to the type of the bar code to be decoded, in the standard form of each mark character for recognizing the bar code of the type
Second ratio of bar width and empty width；
According to first ratio and second ratio, the scaling of each decoding character in bar code to be decoded is determined；
The bar width or empty width in each decoding character are adjusted according to the scaling, to bar width or sky
Each decoding character after width is adjusted is decoded.
2. the method as described in claim 1, it is characterised in that when the mark character includes bebinning character and final character
When, it is described according to first ratio and second ratio, determine the pantograph ratio of each decoding character in bar code to be decoded
Example includes：
According to the first ratio of bebinning character and second ratio, first of each decoding character in bar code to be decoded is determined
Sub- scaling；
According to the first ratio of final character and second ratio, second of each decoding character in bar code to be decoded is determined
Sub- scaling；
According to the described first sub- scaling and the second sub- scaling, each decoding character in bar code to be decoded is determined
Scaling.
3. method as claimed in claim 1 or 2, it is characterised in that each mark character in determination bar code to be decoded
Bar width and the first ratio of empty width include：
According to the pixel being located in bar code to be decoded at least two horizontal scanning lines, recognize each on every horizontal scanning line
Identify the bar width of character and the first sub- ratio of empty width；
According to the bar number of the first sub- ratio and horizontal scanning line on every horizontal scanning line, the bar code to be decoded is determined
In each mark character bar width and the first ratio of empty width.
4. the method as described in claim 1, it is characterised in that it is described according to the scaling to each decoding character
In bar width or empty width be adjusted, each decoding character after being adjusted to bar width or empty width carries out decoding bag
Include：
The empty width or bar width of each decoding character of identification, are carried out according to the scaling to empty width or the bar width
Adjustment；
The bar width after adjustment in each decoding character is with the empty width after unadjusted empty width or adjustment with not adjusting
Whole bar width, it is determined that each decoding character after the corresponding each adjustment of decoding character, to the decoding character after each adjustment
Decoded.
5. the method as described in claim 1, it is characterised in that determining the type of the bar code to be decoded includes：
Recognize the empty width of the bar of bebinning character and/or final character of the bar code to be decoded；
According to the empty width of the standard bar of the corresponding bebinning character of each type of bar code and/or final character pre-saved, with
And the empty width of the bar of identification, determine the type of the bar code to be decoded.
6. a kind of bar code decoding device, it is characterised in that described device includes：
Determining module, the first ratio for determining the bar width of each mark character and empty width in bar code to be decoded, its
In, the mark character includes bebinning character and/or final character；
Identification module, for the type according to the bar code to be decoded, recognizes each mark character of the bar code of the type
Standard form in bar width and empty width the second ratio；
The determining module, is additionally operable to according to first ratio and second ratio, determines each in bar code to be decoded
Decode the scaling of character；
Decoder module is adjusted, for being carried out according to the scaling to the bar width or empty width in each decoding character
Adjustment, each decoding character after being adjusted to bar width or empty width is decoded.
7. device as claimed in claim 6, it is characterised in that the determining module, specifically for according to bebinning character
One ratio and second ratio, determine the first sub- scaling of each decoding character in bar code to be decoded；According to termination
First ratio of character and second ratio, determine the second sub- scaling of each decoding character in bar code to be decoded；
According to the described first sub- scaling and the second sub- scaling, the contracting of each decoding character in bar code to be decoded is determined
Put ratio.
8. device as claimed in claims 6 or 7, it is characterised in that the determining module, specifically for according to bar to be decoded
Be located in code each mark character on the pixel at least two horizontal scanning lines, every horizontal scanning line of identification bar width and
First sub- ratio of empty width；According to the bar number of the first sub- ratio and horizontal scanning line on every horizontal scanning line, it is determined that
First ratio of the bar width of each mark character and empty width in the bar code to be decoded.
9. device as claimed in claim 6, it is characterised in that the adjustment decoder module, specifically for each decoding of identification
The empty width or bar width of character, are adjusted according to the scaling to empty width or the bar width；According to each solution
Bar width after adjustment in code character and the empty width and unadjusted bar width after unadjusted empty width or adjustment, it is determined that
Each decoding character decoded after the corresponding each adjustment of character, is decoded to the decoding character after each adjustment.
10. device as claimed in claim 6, it is characterised in that the determining module, is additionally operable to the identification bar to be decoded
The bebinning character of code and/or the empty width of the bar of final character；According to the corresponding banner word of each type of bar code pre-saved
The empty width of the standard bar of symbol and/or final character, and the empty width of the bar recognized, determine the class of the bar code to be decoded
Type.
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| CN107016318B (en) | 2019-09-17 |
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