CN106600288A - Anti-counterfeiting method and device - Google Patents
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Abstract
The embodiment of the invention discloses an anti-counterfeiting method and a device. The anti-counterfeiting method comprises the steps of identifying a plurality of ink dots in a target region of an anti-counterfeiting pattern; analyzing the area consistency of the plurality of ink dos; according to the area consistency for the plurality of ink dos, determining the authenticity of the anti-counterfeiting pattern. In the prior art, through the image processing process of the anti-counterfeiting pattern, data hidden in the pattern can be identified. However, after the anti-counterfeiting pattern is copied by high-accuracy copying equipment, data hidden in the pattern are still retrained. In this way, the anti-counterfeiting purpose is not realized. According to the technical scheme of the invention, after the high-accuracy anti-counterfeiting pattern is copied, the consistency of ink dos in the pattern gets very poor. Based on the anti-counterfeiting method and the device, through analyzing the area consistency of the plurality of ink dos in the target region of the anti-counterfeiting pattern, the authenticity of the anti-counterfeiting pattern is determined. Therefore, the identification reliability of the anti-counterfeiting pattern is improved.
Description
Technical field
The present embodiments relate to digital false-proof technology field, more particularly to a kind of method for anti-counterfeit and device.
Background technology
Counterfeit and shoddy goods are flooded with a large number consumption market, and to business and consumer huge loss is brought, in order to beat
Hit fake and inferior commodities, enterprise comes up with many method for anti-counterfeit, such as two-dimension code anti-counterfeit, Help by Phone be false proof, laser hologram label
False proof and concealed code is false proof etc..
Wherein, specific image is implanted to Jie by hidden anti-fake code on the basis of existing typography in the way of ink
Matter surface forms security pattern.During discriminating, use can capture the image that the device of the pattern obtains the security pattern, at image
After reason, wherein hiding data are identified.But, this kind of hidden anti-fake code through high accuracy copier duplicating after, using upper
When stating method discriminating, hiding data still can be identified, not have false proof effect, the reliability of anti-counterfeiting image identification
It is low.
The content of the invention
The embodiment of the present invention provides a kind of method for anti-counterfeit and device, to improve the reliability of anti-counterfeiting image identification.
In a first aspect, embodiments providing a kind of method for anti-counterfeit, the method for anti-counterfeit includes：
Recognize the multiple ink dots in the target area of false proof figure；
Analyze the concordance of the plurality of ink dot area；
The true and false of the false proof figure is determined according to the concordance of the plurality of ink dot area.
Further, the concordance of the plurality of ink dot area of the analysis, including：
The area of the plurality of each ink dot of ink dot is calculated, the meansigma methodss of the plurality of ink dot area are calculated；
According to the mean value calculation statistical errors value, the statistical errors value is used to represent the plurality of ink dot face
Long-pending concordance.
Further, the printing precision of the false proof figure is more than or equal to 600dpi.
Further, the method for anti-counterfeit also includes：
Calculate the actual range between arbitrary two ink dots in the false proof figure；
Accordingly, the concordance according to the plurality of ink dot area determines that the true and false of the false proof figure includes：
If the actual range is consistent with the actual range of ink dot in genuine piece, according to the actual range and the plurality of
The concordance of ink dot area determines the true and false of the false proof figure.
Further, the reference line that length is fixed is set beside the false proof figure, and the method for anti-counterfeit also includes：
Obtain the length of the reference line；
If the length of the reference line is consistent with the length of reference line in genuine piece, the reference line is calculated false proof with described
The size of image；
Accordingly, the concordance according to the plurality of ink dot area determines that the true and false of the false proof figure includes：
If the size is consistent with the size in genuine piece, according to the size and the plurality of ink dot
The concordance of area determines the true and false of the false proof figure.
Second aspect, the embodiment of the present invention additionally provides a kind of false proof device, and the false proof device includes：
Ink dot identification module, for the multiple ink dots in the target area for recognizing false proof figure；
Consistency analysis module, for analyzing the concordance of the plurality of ink dot area；
True and false determining module, for determining the true and false of the false proof figure according to the concordance of the plurality of ink dot area.
Further, the consistency analysis module, specifically for：
The area of the plurality of each ink dot of ink dot is calculated, the meansigma methodss of the plurality of ink dot area are calculated；
According to the mean value calculation statistical errors value, the statistical errors value is used to represent the plurality of ink dot face
Long-pending concordance.
Further, the false proof device also includes：
Distance calculation module, for calculating the actual range between arbitrary two ink dots of the false proof figure；
Accordingly, the true and false determining module, is used for：
If the actual range between the actual range and ink dot in genuine piece is consistent, according to the actual range and described many
The concordance of individual ink dot area determines the true and false of the false proof figure.
Further, the reference line that length is fixed is set beside the false proof figure, and the false proof device also includes：
Length acquisition module, for obtaining the length of the reference line；
Ratio computing module, for when the length of the reference line is consistent with the length of reference line in genuine piece, calculating institute
State the size of reference line and the anti-counterfeiting image；
Accordingly, the true and false determining module, is used for：
If the size is consistent with the size in genuine piece, according to the size and the plurality of ink dot
The concordance of area determines the true and false of the false proof figure.
Multiple ink dots in the target area that the embodiment of the present invention passes through the false proof figure of identification, then analyze multiple ink dot faces
Long-pending concordance, finally according to the concordance of multiple ink dot areas the true and false of false proof figure is determined.In prior art, false proof figure
Through high accuracy copier duplicate after, although can retain in figure hide data, but high-precision false proof figure quilt
After duplicating, the concordance of ink dot is relatively low with respect to genuine piece in figure, and the ink dot concordance of genuine piece is higher with respect to autotype.It is based on
This, the embodiment of the present invention determines false proof figure by the concordance of multiple ink dot areas in the target area for analyzing false proof figure
The true and false, improve the reliability of false proof Figure recognition.
Description of the drawings
Fig. 1 is a kind of flow chart of the method for anti-counterfeit in the embodiment of the present invention one；
Fig. 2 a are the amplification effect comparison diagrams of genuine piece and copy under the 600dpi printing precisions in the embodiment of the present invention one；
Fig. 2 b are the ink dot administrative division maps that the genuine piece in the embodiment of the present invention one is chosen with copy；
Fig. 3 is a kind of flow chart of the method for anti-counterfeit in the embodiment of the present invention two；
Fig. 4 a are a kind of flow charts of the method for anti-counterfeit in the embodiment of the present invention three；
Fig. 4 b are the design sketchs of the false proof figure that increased dotted line and solid line reference line in the embodiment of the present invention three；
Fig. 5 is a kind of structural representation of false proof device in the embodiment of the present invention four.
Specific embodiment
With reference to the accompanying drawings and examples the present invention is described in further detail.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that, in order to just
Part related to the present invention rather than entire infrastructure are illustrate only in description, accompanying drawing.
Embodiment one
Fig. 1 is a kind of flow chart of method for anti-counterfeit that the embodiment of the present invention one is provided, and the present embodiment is applicable to commodity
Carry out false proof situation, the method by false proof instrumentation or can install the Intelligent mobile equipment of anti-counterfeit software performing,
Specifically include following steps：
Step 110, recognizes the multiple ink dots in the target area of false proof figure.
Wherein, target area can be a certain subregion of the Zone Full or false proof figure for constituting false proof figure.Ink
The shape of point can be circular, square or other irregular shapes, and preferable shape is circle.
Under this application scene, recognizing the basic process of the multiple ink dots in the target area of false proof figure can be, will
The identification mouth of for example false proof instrumentation of anti counterfeit appts or the photographic head of intelligent mobile terminal are directed at false proof figure, and anti counterfeit appts pass through
Photographic head recognizes the multiple ink dots in the target area of false proof figure, then calculates the area of each ink dot.Wherein, it is false proof special
Can be S4 etc. with the model of instrument, intelligent mobile terminal can be mobile phone or flat board.
Preferably, the printing precision of false proof figure is more than or equal to 600dpi, and Fig. 2 a are 600dpi in the embodiment of the present invention one
The amplification effect comparison diagram of genuine piece and copy under printing precision.
Wherein, the corresponding area of size of single pixel is about 2000 square microns under 600dpi printing precisions, and
600dpi is commonplace a kind of printing precision specification in current printing industry.As shown in Figure 2 a, under this application scene, ink is worked as
Point average area in about 2000 square microns and following (area of the circle equivalent to a diameter of 50 microns), in copy
Ink dot serious lose a little or part ink dot substantially becomes big just occurs so that its consistency becomes excessively poor, uses intelligent sliding
The concordance of dynamic equipment or special anti-counterfeiting Instrumental Analysis its ink dot areas, can determine whether out that it is copy.
Step 120, analyzes the concordance of multiple ink dot areas.
The concordance of ink dot area can be represented by statistical errors, wherein, statistical errors can be variance or
Standard deviation.Under this application scene, the conforming method for analyzing multiple ink dot areas can calculate multiple ink dot faces first
Long-pending meansigma methodss, then according to mean value calculation statistical errors value.
Preferably, step 120 includes：The area of the plurality of each ink dot of ink dot is calculated, the plurality of ink dot face is calculated
Long-pending meansigma methodss, according to mean value calculation statistical errors value.
Exemplary, it is assumed that the ink dot number in the target area of the false proof figure of identification is n, and the area of each ink dot is
xn, then the computing formula of ink dot area average is：
In formula, x is the meansigma methodss of ink dot area.
Variance and standard deviation can reflect the dispersion of one group of data in statistics, and standard deviation passes through variance sqrt
Obtain, variance yields are less, and the dispersion of the data of this group is less, i.e., concordance is better.So that variance represents concordance as an example, root
The computing formula of variance is asked to be according to the above-mentioned meansigma methodss tried to achieve：
In formula, s2It is the variance of ink dot area.Exemplary, the genuine piece and copy from Fig. 2 a chooses respectively same zone
Ink dot in domain, calculates respectively the variance yields of ink dot area, and Fig. 2 b are that the genuine piece in the embodiment of the present invention one is chosen with copy
Ink dot administrative division map.Table 1 is the area of each ink dot and calculated meansigma methodss and variance.
Table 1
As it can be seen from table 1 the variance of ink dot is much larger in the variance ratio genuine piece of ink dot in copy, in showing copy
The concordance of ink dot area is very poor.
The technical scheme of this enforcement, calculates the meansigma methodss of multiple ink dot areas, according to mean value calculation statistical errors value.
The concordance of ink dot area is represented using statistical errors value, method for anti-counterfeit is converted into into mathematical calculation, by the mathematical calculation
Method is placed in anti-counterfeit software so that any intelligent mobile terminal serves as false proof instrument, increased false proof convenience.
Step 130, according to the concordance of multiple ink dot areas the true and false of false proof figure is determined.
Under this application scene, when the concordance of multiple ink dot areas relatively low (statistical errors value is more than threshold value), should
False proof figure is copy；When concordance preferably (statistical errors value is less than or equal to threshold value) of multiple ink dot areas, this is prevented
Pseudo- figure is genuine piece.
Exemplary, when the concordance of ink dot area is represented with variance, a proper threshold value, example can be set
Such as the threshold value is set to 30000.When calculated variance yields are more than 30000, it may be determined that the false proof figure is copy, when
When calculated variance yields are less than or equal to 30000, it may be determined that the false proof figure is genuine piece.The ink dot face of genuine piece in above-mentioned table 1
Long-pending variance is 6789, and the variance of the ink dot area of copy is 471853, it is clear that the variance of the ink dot area of genuine piece is less than threshold
Value, and the variance of the ink dot area of copy is far longer than threshold value.
The technical scheme that the present embodiment is provided, by the multiple ink dots in the target area for recognizing false proof figure, Ran Houfen
The concordance of multiple ink dot areas is analysed, finally according to the concordance of multiple ink dot areas the true and false of false proof figure is determined.Existing skill
In art, false proof figure through high accuracy copier duplicating after, although can retain in figure hide data, but high accuracy
False proof figure duplicated after, the concordance of ink dot is relatively low with respect to genuine piece in figure, and the ink dot concordance of genuine piece is relative duplicates
Product are higher.Based on this, the embodiment of the present invention pass through the concordance of multiple ink dot areas in the target area of the false proof figure of analysis come
Determine the true and false of false proof figure, improve the reliability of false proof Figure recognition.
Embodiment two
Actually quoting in scene, after genuine piece is exaggerated to be replicated, the one of each ink dot area in the copy after amplification
Cause property is relatively good, and copy and genuine piece now cannot be differentiated by way of variance.In order to solve the problem, the present embodiment is carried
For a kind of by judging whether false proof figure is method that is exaggerated, differentiating copy and genuine piece.Fig. 3 is the embodiment of the present invention two
The flow chart of a kind of method for anti-counterfeit for providing, based on above-described embodiment, as shown in figure 3, the method for anti-counterfeit also includes：
Step 210, calculates the actual range of arbitrary two ink dots in false proof figure.
Wherein, the actual range of arbitrary two ink dots can be adjacent two ink dot or non-conterminous ink dot.Meter
Calculating the process of the actual range in false proof figure between arbitrary two ink dots can be：When anti-counterfeit software is developed, one is taken first
Individual scale, scale can be ruler, and with instrumentation the image of scale high scale is captured, and can be identification the characteristics of instrumentation
When recognize tight-lipped patch targeted graphical, it is ensured that the distance of camera lens to targeted graphical be fixed value, it is ensured that the accuracy of measurement, Ran Houcong
The scale of unit length (such as 1cm or 1mm), the i.e. line segment of selection unit's length are chosen in image, two end points of the line segment exist
Coordinate in image is designated as (x1,y1) and (x2,y2), the computing formula of coordinate distance is between 2 points：
In formula, L is the corresponding coordinate distance of unit length, using the value as benchmark, for during follow-up measurement；In false proof inspection
During survey, if two arbitrary ink dots for needing to measure actual range are A and B, the two points centre coordinate difference in the picture
It is (xa,ya) and (xb,yb), then point A is to the coordinate distance of point B：
In formula, Len is the coordinate distance of image midpoint A and point B point-to-point transmissions, then the calculating of point A to the actual range of point B is public
Formula is：
L=Len/L
In formula, the actual range between l point A and point B, its unit can be cm or mm etc..When this 2 points of reality
Distance is significantly greater than in genuine piece during actual range between correspondence ink dot, such as more than 10% and more than, show that the false proof figure is
It is exaggerated, as copy.
Accordingly, step 130 includes：
Step 220, if actual range is consistent with the actual range of ink dot in genuine piece, according to actual range and the plurality of
The concordance of ink dot area determines the true and false of false proof figure.
Wherein, it is consistent that can be actual range essentially equal with the actual range of ink dot in genuine piece or there is less mistake
Difference.If the actual range of 2 points corresponding with genuine piece of the actual range between above-mentioned point A and point B is consistent, continue to analyze anti-
The concordance of multiple ink dot areas of the target area of pseudo- figure, finally according to actual range and the concordance of multiple ink dot areas
Determine the true and false of false proof figure.
The technical scheme that the present embodiment is provided, calculates the actual range between any two ink dot, such as fruit in false proof figure
Border distance is consistent with the actual range of ink dot in genuine piece, is determined according to the concordance of actual range and the plurality of ink dot area anti-
The true and false of pseudo- figure.By the actual range of point-to-point transmission in the actual range and genuine piece between any two points in relatively more false proof figure,
After can effectively preventing copy to be exaggerated, the concordance for relying only on analysis ink dot area cannot be accurately false proof, improves the true and false and knows
Other accuracy.
Embodiment three
Fig. 4 a are a kind of flow chart of method for anti-counterfeit that the embodiment of the present invention three is provided, based on above-described embodiment,
False proof figure side arranges the reference line that length is fixed, and as shown in fig. 4 a, the method for anti-counterfeit also includes：
Step 310, acquisition refers to line length.
Wherein, reference line is the line segment that a length is fixed, and can be dotted line or solid line, can be one or more, Fig. 4 b
The design sketch of the false proof figure that increased dotted line and solid line reference line in for the embodiment of the present invention three.Under this application scene,
Obtain with reference to line length method can with embodiment two in calculate the method for actual range in false proof figure between two ink dots
Identical, here is omitted.Or judge whether the length of reference line in false proof figure is exaggerated by human eye.If with reference to
Line length is significantly greater than the length of reference line in genuine piece, then it represents that anti-counterfeiting image is exaggerated, as copy.
Step 320, if the length of reference line is consistent with the length of reference line in genuine piece, calculates reference line and anti-counterfeiting image
Size.
Wherein, reference line and the size of false proof figure can be the two point distances set in reference line and false proof figure
Size, for example, the length of reference line is fixedly installed as 5 millimeters in genuine piece, in genuine piece figure set 2 points distance be 1
Millimeter, then reference line and the size of anti-counterfeiting image are 5 in genuine piece:1.Under this application scene, the length of reference line with it is true
The length of the reference line expression reference line that is consistent is not exaggerated in product, and then calculates the size of reference line and false proof figure,
If the size for calculating is significantly less than the size in genuine piece, then it represents that false proof figure is exaggerated, as copy.
Accordingly, step 130 includes：
Step 330, if size is consistent with the size in genuine piece, according to size and multiple ink dot areas
Concordance determine the true and false of false proof figure.
Under this application scene, if size is consistent with the size in genuine piece, represent false proof figure not by
Amplify, then continue the concordance of multiple ink dot areas of the target area for analyzing false proof figure, finally according to size and many
The concordance of individual ink dot area determines the true and false of false proof figure.
The technical scheme of the present embodiment, obtains the length of reference line, if in the length of reference line and genuine piece reference line length
Degree is consistent, then the size of reference line and the anti-counterfeiting image is calculated, if the size phase in size and genuine piece
Symbol, according to the concordance of size and multiple ink dot areas the true and false of false proof figure is determined.By setting beside false proof figure
The reference line of regular length is put, after can effectively preventing copy to be exaggerated, the concordance for relying only on analysis ink dot area cannot
It is accurately false proof.
Example IV
Fig. 5 is a kind of structural representation of false proof device that the embodiment of the present invention four is provided, as shown in figure 5, the anti-camouflage
Put including：Ink dot identification module 410, consistency analysis module 420, true and false determining module 430, distance calculation module 440, length
Acquisition module 450 and ratio computing module 460.
Ink dot identification module 410, for the multiple ink dots in the target area for recognizing false proof figure；
Consistency analysis module 420, for analyzing the concordance of multiple ink dot areas；
True and false determining module 430, for determining the true and false of the false proof figure according to the concordance of multiple ink dot areas.
Preferably, consistency analysis module 420, specifically for：
The area of the plurality of each ink dot of ink dot is calculated, the meansigma methodss of the plurality of ink dot area are calculated；
According to mean value calculation statistical errors value, statistical errors value is used to represent the consistent of the plurality of ink dot area
Property.
Preferably, the printing precision of false proof figure is more than or equal to 600dpi.
Preferably, false proof device also includes：
Distance calculation module 440, for calculating false proof figure in arbitrary two ink dots actual range；
Accordingly, true and false determining module 430, is used for：
If actual range is consistent with the actual range of ink dot in genuine piece, according to actual range and the plurality of ink dot area
Concordance determine the true and false of false proof figure.
Preferably, the reference line that length is fixed is set beside false proof figure, and false proof device also includes：
Length acquisition module 450, for obtaining the length of the reference line；
Ratio computing module 460, for when the length of reference line is consistent with the length of reference line in genuine piece, calculating reference
The size of line and anti-counterfeiting image.
Accordingly, true and false determining module 430, is used for：
If size is consistent with the size in genuine piece, according to size and the concordance of multiple ink dot areas
Determine the true and false of false proof figure.
The method that the aforementioned all embodiments of the executable present invention of said apparatus are provided, possesses execution said method corresponding
Functional module and beneficial effect.Ins and outs of detailed description in the present embodiment, not can be found in the aforementioned all enforcements of the present invention
The method that example is provided.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although the present invention is carried out by above example
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
More other Equivalent embodiments can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (10)
1. a kind of method for anti-counterfeit, it is characterised in that the method for anti-counterfeit includes：
Recognize the multiple ink dots in the target area of false proof figure；
Analyze the concordance of the plurality of ink dot area；
The true and false of the false proof figure is determined according to the concordance of the plurality of ink dot area.
2. method for anti-counterfeit according to claim 1, it is characterised in that the plurality of ink dot area of the analysis it is consistent
Property, including：
The area of the plurality of each ink dot of ink dot is calculated, the meansigma methodss of the plurality of ink dot area are calculated；
According to the mean value calculation statistical errors value, the statistical errors value is used to represent the plurality of ink dot area
Concordance.
3. method for anti-counterfeit according to claim 1 and 2, it is characterised in that
The printing precision of the false proof figure is more than or equal to 600dpi.
4. method for anti-counterfeit according to claim 1, it is characterised in that the method for anti-counterfeit also includes：
Calculate the actual range of arbitrary two ink dots in the false proof figure；
Accordingly, the concordance according to the plurality of ink dot area determines that the true and false of the false proof figure includes：
If the actual range is consistent with the actual range of ink dot in genuine piece, according to the actual range and the plurality of ink dot
The concordance of area determines the true and false of the false proof figure.
5. method for anti-counterfeit according to claim 1, it is characterised in that arrange what length was fixed beside the false proof figure
Reference line, the method for anti-counterfeit also includes：
Obtain the length of the reference line；
If the length of the reference line is consistent with the length of reference line in genuine piece, the reference line is calculated with the anti-counterfeiting image
Size；
Accordingly, the concordance according to the plurality of ink dot area determines that the true and false of the false proof figure also includes：
If the size is consistent with the size in genuine piece, according to the size and the plurality of ink dot area
Concordance determine the true and false of the false proof figure.
6. a kind of false proof device, it is characterised in that the false proof device includes：
Ink dot identification module, for the multiple ink dots in the target area for recognizing false proof figure；
Consistency analysis module, for analyzing the concordance of the plurality of ink dot area；
True and false determining module, for determining the true and false of the false proof figure according to the concordance of the plurality of ink dot area.
7. false proof device according to claim 6, it is characterised in that the consistency analysis module, specifically for：
The area of the plurality of each ink dot of ink dot is calculated, the meansigma methodss of the plurality of ink dot area are calculated；
According to the mean value calculation statistical errors value, the statistical errors value is used to represent the plurality of ink dot area
Concordance.
8. the false proof device according to claim 6 or 7, it is characterised in that
The printing precision of the false proof figure is more than or equal to 600dpi.
9. false proof device according to claim 6, it is characterised in that the false proof device also includes：
Distance calculation module, for calculating the false proof figure in arbitrary two ink dots actual range；
Accordingly, the true and false determining module is used for：
If the actual range between the actual range and ink dot in genuine piece is consistent, according to the actual range and the plurality of ink
The concordance of point area determines the true and false of the false proof figure.
10. false proof device according to claim 6, it is characterised in that length is set beside the false proof figure and is fixed
Reference line, the false proof device also includes：
Length acquisition module, for obtaining the length of the reference line；
Ratio computing module, for when the length of the reference line is consistent with the length of reference line in genuine piece, calculating the ginseng
Examine the size of line and the anti-counterfeiting image；
Accordingly, the true and false determining module is used for：If the size is consistent with the size in genuine piece, according to institute
The concordance for stating size and the plurality of ink dot area determines the true and false of the false proof figure.
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| CN201611089529.0A CN106600288B (en) | 2016-12-01 | 2016-12-01 | A kind of method for anti-counterfeit and device |
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| CN201611089529.0A CN106600288B (en) | 2016-12-01 | 2016-12-01 | A kind of method for anti-counterfeit and device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107194708A (en) * | 2017-06-14 | 2017-09-22 | 上海美声服饰辅料有限公司 | Method for anti-counterfeit and its system |
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| CN111950317A (en) * | 2020-08-07 | 2020-11-17 | 程烨 | Microcosmic coded image extraction device and method for identifying authenticity after image extraction |
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