CN107481179A - Antifalsification label recognition methods with watermarked information and device - Google Patents
Antifalsification label recognition methods with watermarked information and device Download PDFInfo
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- CN107481179A CN107481179A CN201710346057.0A CN201710346057A CN107481179A CN 107481179 A CN107481179 A CN 107481179A CN 201710346057 A CN201710346057 A CN 201710346057A CN 107481179 A CN107481179 A CN 107481179A
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- 238000005242 forging Methods 0.000 description 4
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T1/00—General purpose image data processing
- G06T1/0021—Image watermarking
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Abstract
The invention discloses a kind of antifalsification label recognition methods with watermarked information, including step：The optical information of hologram diffraction on S100, collection antifalsification label；S200, the holographic data according to corresponding to obtaining the optical information；S300, the default corresponding relation list acquisition of basis view data corresponding with holographic data；S400, described image data, acquisition watermark feature value are calculated using preset algorithm；S500, compare whether the watermark feature value matches with default watermark information；S600, when the watermark feature value matches with the default watermark information, feed back watermark correct information.The optical information that the diffraction of present invention identification holographic microstructure is shown, realize being perfectly combined for digital watermark technology and holographic technique, brightness and the aesthetics of hologram can not only be retained, simultaneously, interference and False Rate of the hologram when watermark information is extracted in identification are reduced, substantially reduces the response time.
Description
Technical field
The present invention relates to field, more particularly to a kind of antifalsification label recognition methods with watermarked information and device.
Background technology
Laser Holographic Counterfeit-proof Technique, it is to utilize laser rainbow hologram plate-making technology and moulding replication technology, on product
A kind of visual graph text information made.With computer dot matrix photoetching technique, 3D true color holographies technology, it is multiple with dynamic into
As the comprehensive utilization of the technologies such as technology, the development of higher level Laser Holographic Counterfeit-proof Technique has been promoted.Sent out using above-mentioned technology
It is continuous to open up the encryption technologies such as the optics Random line formed, optical shrink, dynamic holographic, space multistory, digital dot matrix image
Emerge in large numbers, turn into the main flow direction of current antiforge laser holographic.The realization of these cipher modes, be using various combination optics and
The special techniques such as computer information processing are formed in the laser plate-making stage.
With constantly bringing forth new ideas for various anti-counterfeiting technologies, there is the solution that more and more compound anti-counterfeiting technologies combine.
Accordingly, how to identify that the antifalsification label that various anti-counterfeiting technologies combine generation is also this area technical issues that need to address.
The content of the invention
In order to solve the above technical problems, the present invention provides a kind of antifalsification label recognition methods with watermarked information and device,
Antifalsification label with watermarked information can be identified, by judging that antifalsification label can be identified to realize the false proof energy of antifalsification label
Power.
Technical scheme provided by the invention is as follows：
The invention discloses a kind of antifalsification label recognition methods with watermarked information, including step：S100, collection anti-counterfeiting label
Sign the optical information of hologram diffraction；S200, the holographic data according to corresponding to obtaining the optical information；Default pair of S300, basis
Relation list is answered to obtain view data corresponding with holographic data；S400, described image data, acquisition are calculated using preset algorithm
Watermark feature value；S500, compare whether the watermark feature value matches with default watermark information；S600, when the watermark feature
When value matches with the default watermark information, watermark correct information is fed back.
The present invention is converted to corresponding holographic data by gathering the optical information of hologram diffraction, according to default corresponding relation
List obtains view data, and the watermark feature value hidden in the hologram is calculated with reference to preset algorithm, by comparing watermark
Characteristic value realizes the identification of antifalsification label.
Further, the step also includes step before being S100：S000, it is pre-configured with the default corresponding relation row
Table.
Further, the holographic data includes the grating angle value of each pixel on hologram；Described image packet
Include the gray value of each pixel on hologram.
Further, the step S300 is specifically included：According to each picture in default corresponding relation list acquisition and hologram
Gray value corresponding to the grating angle value of vegetarian refreshments.
The invention also discloses a kind of antifalsification label identification device, including：Acquisition module is complete on antifalsification label for gathering
Cease the optical information of figure diffraction；Holographic data acquisition module, for the holographic data according to corresponding to optical information acquisition；Picture number
According to acquisition module, for according to default corresponding relation list acquisition view data corresponding with holographic data；Computing module, it is used for
Described image data are calculated using preset algorithm, obtain watermark feature value；Comparing module, for compare the watermark feature value with
Whether default watermark information matches；Feedback module, for when the watermark feature value matches with the default watermark information, instead
Present watermark correct information.
Further, in addition to：Configuration module, for being pre-configured with the default corresponding relation list.
Further, the holographic data includes the grating angle value of each pixel on hologram；Described image packet
Include the gray value of each pixel on hologram.
Further, described image data acquisition module is specifically used for according on default corresponding relation list acquisition and hologram
Gray value corresponding to the grating angle value of each pixel.
Compared with prior art, can the present invention realize antifalsification label by identify antifalsification label with watermarked information
False proof purpose, wherein antifalsification label with watermarked information is by formation of hologram with watermarked information, watermark information and holography
Figure combines, and the gray value by watermarking images is corresponding with the grating angle value for photoetching, so as to realize the micro-structural in holography
The hiding information of upper performance, watermark information are hidden on holographic microstructure so that and every piece of contour forging printing plate all has identifiability,
There can be preferable antifalse effect, both protect aesthetics and the brightness of hologram, also avoid disturbing hologram reclaimed water official seal
The recognition of breath, solve the limitation of both connected applications in the prior art, extend the application of digital watermarking, increase simultaneously
A kind of composite holographic anti-counterfeiting technology is added.
Brief description of the drawings
Below by a manner of clearly understandable, preferred embodiment is described with reference to the drawings, the present invention is given furtherly
It is bright.
Fig. 1 is a kind of key step schematic diagram of antifalsification label recognition methods with watermarked information of the present invention；
Fig. 2 is a kind of schematic diagram of specific embodiment of the present invention；
Fig. 3 is the schematic diagram of another specific embodiment of the invention；
Fig. 4 is the schematic diagram of another specific embodiment of the invention；
Fig. 5 is the schematic diagram of another specific embodiment of the present invention；
Fig. 6 is a kind of main composition schematic diagram of antifalsification label identification device of the present invention.
Drawing reference numeral explanation：
1st, acquisition module, 2, holographic data acquisition module, 3, image data acquisition module, 4, computing module, 5, compare mould
Block, 6, feedback module.
Embodiment
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, control is illustrated below
The embodiment of the present invention.It should be evident that drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing, and obtain other embodiments.
To make simplified form, part related to the present invention is only schematically show in each figure, they are not represented
Its practical structures as product.In addition, so that simplified form readily appreciates, there is identical structure or function in some figures
Part, one of those is only symbolically depicted, or only marked one of those.Herein, "one" is not only represented
" only this ", the situation of " more than one " can also be represented.
Fig. 1 is a kind of key step schematic diagram of antifalsification label recognition methods with watermarked information of the present invention, such as Fig. 1 institutes
Show, a kind of antifalsification label recognition methods with watermarked information, including step：Hologram diffraction on S100, collection antifalsification label
Optical information；S200, the holographic data according to corresponding to obtaining the optical information；S300, according to default corresponding relation list obtain with
View data corresponding to holographic data；S400, described image data, acquisition watermark feature value are calculated using preset algorithm；S500、
Compare whether the watermark feature value matches with default watermark information；S600, when the watermark feature value and the default watermark
During information matches, watermark correct information is fed back.
Specifically, the holographic data includes the grating angle value of each pixel on hologram；Described image packet
Include the gray value of each pixel on hologram.
Antifalsification label of the present invention is with watermarked information, and wherein watermark information in the micro-structural of hologram by showing
Come.The antifalsification label of the specific present invention generates by the following method：
First, watermark information is embedded in using at least one passage of the default watermarking algorithm in the watermarking images, generation contains
The watermarking images of watermark information；
Specifically, original image can be an anti-counterfeiting mark or a kind of false-proof texture, usually with client LOGO, figure
Case, text information etc. are used as design element or material, then integrated anti-counterfeit Technological expression effect, the requirement of mark manufacture craft, size
The factor designs such as specification go out a composition brand-new false proof graph image attractive in appearance.Watermark region is selected by client in the present invention
Or designer chooses, in this design process, it is contemplated that watermark information and this area are embedded in which region or figure
The final effect in domain whether with other graphical effect harmonies.However, actual mechanical process can also be after layout determination again
Determine the embedded watermark information of increase.This figure for just needing to select relative area bigger does the watermark region of embedded watermark.
Watermark information be substantially a kind of digital secret information form of expression can numeral, letter, even pictorial pattern etc.,
Embedded watermark information refers to by specific watermarking algorithm to watermark region selected in design configuration in design configuration
Interior image enters line translation, by that can be specifically pair in the image in the embedded watermark region of coded system (weaving into 01 bit)
The parameter value of a certain passage of image enters line translation.Watermark information is embedded in by watermark region image using watermarking algorithm herein
A certain passage in export the watermarking images of RGB patterns again, it is therefore desirable to the watermark containing encryption can be just obtained after split tunnel
The passage gray level image of information.If the mould of output mode conversion is come with present in prior art in " watermark embedded software "
Block, the step for can also omitting.
2nd, the watermarking images are subjected to processing and are converted to holographic plate-making data；
Wherein processing is carried out to watermarking images to specifically include：The noise hum pattern of the watermarking images is obtained, is made an uproar described
Point hum pattern carries out channel separation, obtains the passage gray level image of at least one passage.
3rd, hologram is formed on photoetching hectograph according to the holographic plate-making data, specifically includes step：
The GTG threshold value of the passage gray level image is adjusted in the range of preset gray scale, obtains the passage gray level image
The gray value of each pixel；The GTG threshold value of passage gray level image is adjusted by establishing gradual change mapping model, can also be led to
The method for crossing change color range reaches same effect.Present invention design gray value and grating angle correspond, therefore, gray scale
Value essence is grating angle value, is exactly further the direction for controlling optical grating diffraction light, it is transferred into this preset gray scale scope
It is because diffraction luminous energy of the grating in the range of this is collected by camera gun carries out computing so as to be converted to electric signal.And
Grating angle diffraction light outside this scope can not be collected just by camera into invalid information.So for greatest extent
Coded signal entrained by record and reduction watermarking images, by GTG threshold value preferably in this preset gray scale scope.
The watermarking images are divided into by multiple different regional graphics according to default expression effect, and are each area
Spatial frequency parameter corresponding to the figure setting of domain；Region point is carried out for the passage gray level image for being embedded with watermark information
Cut, it is therefore an objective to different spatial frequency parameters is set for different zones figure, for realizing different micro-structural stripeds, with performance
Go out abundant color.
Obtained according to default corresponding relation list corresponding with the gray value of each pixel of the passage gray level image
Grating angle value, and the spatial frequency parameter according to corresponding to each pixel affiliated area figure of the passage gray level image
Obtain grating fringe frequency corresponding to each pixel；
According to preset rules by the grating angle value of each pixel of the passage gray level image of acquisition and right
The grating fringe frequency generation holographic plate-making data answered.The passage being embedded according to watermark information is different, can be divided into following several feelings
Condition：
1st, when being only embedded in watermark information in the single passage of watermarking images, according to the pixel number of passage gray level image
Amount generates dot matrix on photoetching hectograph, for exposing point by point.Wherein, the passage ash of the passage of wherein embedded watermark information is obtained
Image is spent, specifically obtains the noise hum pattern of watermarking images, noise hum pattern is subjected to channel separation, obtains embedded watermark letter
The passage gray level image of the passage of breath.
The gray value of each pixel of passage gray level image is obtained, and each picture is obtained according to default corresponding relation list
Grating angle value corresponding to the gray value of vegetarian refreshments, and each pixel affiliated area figure according to the passage gray level image
Corresponding spatial frequency parameter obtains grating fringe frequency corresponding to each pixel.
According to the grating angle value and grating fringe frequency of each pixel, corresponding pixel is enterprising on photoetching hectograph
Row photoetching.
Fig. 2 is a kind of schematic diagram of specific embodiment of the present invention.As shown in Fig. 2 A represents a picture of passage gray level image
Vegetarian refreshments, a represents a pixel of photoetching hectograph, when single channel is embedded in watermark information, in a pixels according to passage gray scale
The pixel A of image grating angle value and grating fringe frequency carries out photoetching.
2nd, when being embedded in watermark information in multiple passages of watermarking images, the number of the pixel on photoetching hectograph is improved
Amount, it is larger than the pixel quantity sum of multiple passages.It is specific as follows by taking two passages as an example：
The passage gray level image of two passages of embedded watermark information is obtained, specifically obtains the noise information of watermarking images
Figure, noise hum pattern is subjected to channel separation, obtains the passage gray level image of each passage respectively.
The gray value of each pixel in each passage gray level image is obtained respectively, and is obtained according to default corresponding relation list
Grating angle value corresponding to the gray value of each pixel is taken, and according to belonging to each pixel of the passage gray level image
Spatial frequency parameter corresponding to regional graphics obtains grating fringe frequency corresponding to each pixel.
The quantity for improving pixel on photoetching hectograph is the pixel quantity sum of two passage gray level images.Fig. 3 is this
Invent the schematic diagram of another specific embodiment.As shown in figure 3, A represents a pixel of first passage gray level image, B
A pixel of another passage gray level image is represented, a, b, c, d represent a pixel of photoetching hectograph respectively, at two
When passage is embedded in watermark information, photoetching hectograph a pixels according to the pixel A of first passage gray level image grating
Angle value and grating fringe frequency carry out photoetching, photoetching hectograph b pixels according to the pixel of another passage gray level image
Point B grating angle value and grating fringe frequency carry out photoetching, remaining c pixels and d pixel vacancy on photoetching hectograph, no
Carry out photoetching.From the figure 3, it may be seen that the resolution ratio of photoetching hectograph is 4 times of passage gray level image resolution ratio.
Above-described embodiment only enumerates two kinds of situations, including but not limited to above-mentioned two situations.If embedded in three passages
Enter watermark information, accordingly, need to only improve the resolution ratio of photoetching hectograph so that pixel quantity is more than three and led on photoetching hectograph
The pixel sum of road gray level image.Fig. 4 is the schematic diagram of another specific embodiment of the invention.As shown in figure 4, A tables
Show a pixel of first passage gray level image, B represents a pixel of second passage gray level image, and C represents the
One pixel of three passage gray level images, a, b, c, d represent a pixel of photoetching hectograph respectively, in three passages
During embedded watermark information, photoetching hectograph a pixels according to the pixel A of first passage gray level image grating angle value
Carry out photoetching with grating fringe frequency, photoetching hectograph b pixels according to the pixel B of second passage gray level image light
Grid angle value and grating fringe frequency carry out photoetching, photoetching hectograph c pixels according to the picture of the 3rd passage gray level image
Vegetarian refreshments C grating angle value and grating fringe frequency carry out photoetching, remaining d pixels vacancy on photoetching hectograph, without light
Carve.
Fig. 5 is the schematic diagram of another embodiment of the present invention.As shown in figure 5, A represents one of first passage gray level image
Pixel, B represent a pixel of second passage gray level image, and C represents a pixel of the 3rd passage gray level image
Point, a1, a2, a3, b1, b2, b3, c1, c2, c3 are respectively the pixel on photoetching hectograph, according to first passage gray level image
A pixels the photoetching on tri- pixels of a1, a2, a3 of grating angle value and grating fringe frequency, that is, pass through photoetching hectograph
Upper three pixels represent the A pixels of first passage gray level image, similarly, according to second passage gray level image
The grating angle value and grating fringe frequency of B pixels photoetching on tri- pixels of b1, b2, b3, according to the 3rd passage ash
Spend grating angle value and grating fringe the frequency photoetching on tri- pixels of c1, c2, c3 of the C pixels of image.
4th, the contour forging printing plate containing the hologram is formed in metallic nickel version by the way of electroforming；
One layer of silver conductive layer is formed in photoetching hectograph hologram surface using the method for chemical silvering, makes it conductive, will
There is the photoetching hectograph of silver conductive layer as negative electrode, be put into the electrolyte containing nickel ion, using electroplating principle is electrolysed, in negative electrode
Metallic nickel is plated on silver layer and deposits to certain thickness.The version for depositing to certain thickness nickel metal is taken out, takes glass plate off, washes
Fall the photoresist on metallograph top layer, just obtain a hologram metal matrix for carrying mirror image pattern, i.e. contour forging plate.
5th, by the contour forging plate by the hologram transfer on plastic material, generate antifalsification label.
Antifalsification label of the present invention is formed by the laser pattern of embedded watermark information, and the watermark information is to pass through
The diffraction of holographic microstructure shows, and has identifiability.The present invention is by identifying that antifalsification label realizes antifalsification label
False proof purpose, the present invention are perfectly combined by digital watermark technology and holographic technique, are reduced hologram and are extracted water in identification
Interference and False Rate when official seal ceases, substantially reduce the response time, at the same can retain on laser plate the brightness of hologram and
Aesthetics.
The identification process of the present invention is specific as follows：
The optical information of hologram diffraction on antifalsification label is gathered, the holographic data according to corresponding to obtaining the optical information.Its
Middle holographic data refers to the grating fringe frequency and grating angle value of each pixel.Obtained according to default corresponding relation list
View data corresponding with holographic data, wherein view data refer to the gray value of pixel.Pass through self-defined one default pair
Relation list is answered, grating angle value and gray value are made into corresponding relation, obtain the gray value of each pixel.Using preset algorithm
The gray value is calculated, watermark feature value is obtained, compares whether the watermark feature value matches with default watermark information, when described
When watermark feature value matches with the default watermark information, watermark correct information is fed back.
Fig. 6 is a kind of main composition schematic diagram of antifalsification label identification device of the present invention.As shown in fig. 6, antifalsification label is known
Other device includes：Acquisition module 1, for gathering the optical information of hologram diffraction on antifalsification label；Holographic data acquisition module 2,
For the holographic data according to corresponding to optical information acquisition；Image data acquisition module 3, for being arranged according to default corresponding relation
Table obtains view data corresponding with holographic data；Computing module 4, for calculating described image data using preset algorithm, obtain
Water intaking print characteristic value；Comparing module 5, for comparing whether the watermark feature value matches with default watermark information；Feedback module
6, for when the watermark feature value matches with the default watermark information, feeding back watermark correct information.
The holographic data includes the grating angle value of each pixel on hologram；Described image data include hologram
The gray value of upper each pixel.
Preferably, in addition to configuration module, for being pre-configured with the default corresponding relation list.
Preferably, described image data acquisition module 3 is specifically used for according to default corresponding relation list acquisition and hologram
Gray value corresponding to the grating angle value of upper each pixel.
Antifalsification label of the present invention, generally radium-shine packaging material, by the way that the antifalsification label is identified, Neng Goufang
Model is pirate.The antifalsification label of the present invention is by formation of hologram with watermarked information, passes through the gray value and use of watermarking images
It is corresponding in the grating angle value of photoetching, show hiding information in the micro-structural of holography so as to realize so that every piece of holographic mould
Pressure version all has identifiability, has both protected aesthetics and the brightness of hologram, also avoids disturbing watermark information in hologram
Recognition, solve the limitation of both connected applications in the prior art, extend the application of digital watermarking, add simultaneously
A kind of composite holographic anti-counterfeiting technology.There can be preferable antifalse effect.
It should be noted that the content such as information exchange, implementation procedure in the present apparatus between each module and the above method are real
Apply example and be based on same design, particular content can be found in the narration in the inventive method embodiment, and here is omitted.
It should be noted that above-described embodiment can independent assortment as needed.Described above is only the preferred of the present invention
Embodiment, it is noted that for those skilled in the art, do not departing from the premise of the principle of the invention
Under, some improvements and modifications can also be made, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of antifalsification label recognition methods with watermarked information, contain hologram on antifalsification label, it is characterised in that including step
Suddenly：
The optical information of hologram diffraction on S100, collection antifalsification label；
S200, the holographic data according to corresponding to obtaining the optical information；
S300, the default corresponding relation list acquisition of basis view data corresponding with holographic data；
S400, described image data, acquisition watermark feature value are calculated using preset algorithm；
S500, compare whether the watermark feature value matches with default watermark information；
S600, when the watermark feature value matches with the default watermark information, feed back watermark correct information.
2. antifalsification label recognition methods with watermarked information as claimed in claim 1, it is characterised in that also include step before
Suddenly：
S000, it is pre-configured with the default corresponding relation list.
3. antifalsification label recognition methods with watermarked information as claimed in claim 1, it is characterised in that the holographic data bag
Include the grating angle value of each pixel on hologram；Described image data include the gray value of each pixel on hologram.
4. antifalsification label recognition methods with watermarked information as claimed in claim 2, the step S300 are specifically included：
According to default corresponding relation list acquisition gray value corresponding with the grating angle value of each pixel on hologram.
A kind of 5. antifalsification label identification device, it is characterised in that including：
Acquisition module, for gathering the optical information of hologram diffraction on antifalsification label；
Holographic data acquisition module, for the holographic data according to corresponding to optical information acquisition；
Image data acquisition module, for according to default corresponding relation list acquisition view data corresponding with holographic data；
Computing module, for calculating described image data using preset algorithm, obtain watermark feature value；
Comparing module, for comparing whether the watermark feature value matches with default watermark information；
Feedback module, for when the watermark feature value matches with the default watermark information, feeding back watermark correct information.
6. antifalsification label identification device as claimed in claim 5, it is characterised in that also include：
Configuration module, for being pre-configured with the default corresponding relation list.
7. antifalsification label identification device as claimed in claim 5, it is characterised in that the holographic data includes every on hologram
The grating angle value of individual pixel；Described image data include the gray value of each pixel on hologram.
8. antifalsification label identification device as claimed in claim 5, it is characterised in that described image data acquisition module is specifically used
According to default corresponding relation list acquisition gray value corresponding with the grating angle value of each pixel on hologram.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108537945A (en) * | 2018-03-09 | 2018-09-14 | 深圳怡化电脑股份有限公司 | Bill method of detecting watermarks, system and self-service device |
| CN109840875A (en) * | 2019-03-06 | 2019-06-04 | 深圳市金天速科技有限公司 | A kind of anti-counterfei waterprint generation method, device, electronic equipment and storage medium |
| CN110264442A (en) * | 2019-05-16 | 2019-09-20 | 苏州科达科技股份有限公司 | A kind of integrity check method of watermark, electronic equipment and readable storage medium storing program for executing |
| CN112329673A (en) * | 2020-11-12 | 2021-02-05 | 北京文通科技有限公司 | Anti-counterfeiting fiber identification method, anti-counterfeiting identification device and storage medium |
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Application publication date: 20171215 |