CN108551540A - The printing quantum dot watermark encoder method of pseudo-random information spatial domain modulation - Google Patents
The printing quantum dot watermark encoder method of pseudo-random information spatial domain modulation Download PDFInfo
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- CN108551540A CN108551540A CN201810408222.5A CN201810408222A CN108551540A CN 108551540 A CN108551540 A CN 108551540A CN 201810408222 A CN201810408222 A CN 201810408222A CN 108551540 A CN108551540 A CN 108551540A
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- quantum dot
- information
- image
- printing
- coding
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
- H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
- H04N1/32144—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
- H04N1/32149—Methods relating to embedding, encoding, decoding, detection or retrieval operations
- H04N1/32203—Spatial or amplitude domain methods
- H04N1/32251—Spatial or amplitude domain methods in multilevel data, e.g. greyscale or continuous tone data
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
- H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
- H04N1/32144—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
- H04N1/32149—Methods relating to embedding, encoding, decoding, detection or retrieval operations
- H04N1/32203—Spatial or amplitude domain methods
- H04N1/32256—Spatial or amplitude domain methods in halftone data
Abstract
The invention discloses the printing quantum dot watermark encoder methods of pseudo-random information spatial domain modulation, including (1) data normalization coding；(2) information is encrypted；(3) triple inspection Error Corrections of Coding；(4) quantum dot point cloud artwork is printed；(5) graphical rule matching and subregion replicate；(6) subregion pseudorandom scramble；(7) the blind implantation carrier image of dereferenced.The present invention is Information hiding and its Reliability codes method based on printing quantum dot, it is a kind of coding method for reliable, the safe information anti-fake, Information hiding and Information value-added service technology being hidden in the anti-counterfeiting mark printed in image, image or text message, the coding method overcome existing half-tone information anti-counterfeiting technology in terms of copy-resistant, the defect of resisting breakage and the Information Embedding method simplicity existing for it is insufficient.
Description
Technical field
The present invention relates to printing anti-counterfeit field, specially a kind of printing quantum dot watermark of pseudo-random information spatial domain modulation is compiled
Code method.
Background technology
Information concealing method based on printing quantum dot is different from based on embedded gray scale FM of equal value in halftoning AM (amplitude modulation)
The half-tone information hidden method of (frequency modulation) site, also different from the side for realizing Information hiding by modulating amplitude shape
Method, the method for being more different from realizing Information hiding based on continuous toned image frequency domain characteristic, but be imaged based on printing and printing
The space lattice data of minimum ink dot (can not divide again) carry out a kind of method that pseudorandom modulation realizes Information hiding.
This method realize print quantum point image Information hiding when without the incidence relation between foundation and carrier image,
Being a kind of blind implantation has extremely strong copy-resistant performance and a simple, easy half-tone information hidden method.This method is in technology reality
It is dirty above now to will produce a large amount of information in printing or print procedure because being influenced by printing quantum dot image quality uncertain factor
Damage, bit error rate when this method being caused to extract hiding information is high, needs to meet printing or print characteristic by special
The Reliability codes technology with extremely strong EDC error detection and correction ability give and overcome and solve.
Invention content
It is an object of the invention to overcome half-tone information anti-counterfeiting technology in copy-resistant, the performance of resisting breakage and Information Embedding
It is insufficient existing in terms of method simplicity, a kind of letter based on printing quantum dot (the minimum imaging ink dot of printing or printing) is provided
Breath hides and its Reliability codes method.
The technical solution adopted by the present invention to solve the technical problems is：
The printing quantum dot watermark encoder method of pseudo-random information spatial domain modulation, the method are modulated using pseudo-random information
Quantum dot spatial domain vector dot array data is printed, so that it is carried anti-counterfeiting mark or needs hiding image, text message, this method packet
Include following steps：
(1) data normalization encodes
The different-format information of anti-counterfeiting mark, image or text is handled, the binary code stream of specification is made
Data information；
(2) information is encrypted
It to the normalized number evidence of step (1) production, is encrypted according to Encryption Algorithm, generates cipher-text information；
(3) triple inspection Error Corrections of Coding
To the cipher-text information of step (2) production, the linear block codes coding of the first weight, the second weight spread spectrum coding, the are carried out
Triple two dimension checksum codings；
(4) quantum dot point cloud artwork is printed
To the dot matrix basis image for the printing quantum dot that (3) three recombination of step inspection Error Correction of Coding generates, pass through number to be printed
The spatial domain dot matrix distribution record data information of son point；
(5) graphical rule matching and subregion replicate
The binary system spatial domain dot array data information generated according to carrier image and step (4) carries out size scale matching, real
Now the subregion of printing quantum dot point cloud chart picture replicates；
(6) subregion pseudorandom scramble
Pseudorandom scramble is carried out to each subregion spatial domain dot array data, generates and randomization, homogeneous state is presented in spatial distribution
The printing quantum dot anti-counterfeiting image of distribution；
(7) the blind implantation carrier image of dereferenced
The printing quantum dot anti-counterfeiting image generated to step (6) is loaded into carrier image using the blind method for implantation of dereferenced
On, generate the printing quantum dot watermarking images with copy-resistant, resisting breakage.
As an improvement of the above technical solution, this method further includes step (8) printing quantum dot anti-counterfeiting image output：It will step
Suddenly the printing quantum dot anti-counterfeiting image that (7) generate is exported by printing or mode of printing on medium.Printing type includes ink-jet
Printing and laser printing two ways, mode of printing includes four kinds of offset printing, gravure, flexo and silk-screen modes.
As an improvement of the above technical solution, the processing of data normalization described in step (1) includes to anti-counterfeiting mark, figure
Picture, text, network address, article code, sequence number carry out standardization processing, obtain the binary system true form bit stream data information of specification.
As an improvement of the above technical solution, information described in step (2) encryption include to binary code flow data, according to
MD5, RSA or des encryption algorithm are encrypted, and generate cipher-text information.
As an improvement of the above technical solution, triple inspection Error Corrections of Coding described in step (3) include the first heavy Linear codes
Code (BCH, RS, CRC) coding, the second weight Direct Sequence Spread Spectrum coding, after serial/parallel transformation, then carry out the two-dimentional odd even of third weight
Check code.
As an improvement of the above technical solution, described in step (3) coding be based on binary system bit flow datas and by two into
The string data that bit flow datas coding processed generates.
As an improvement of the above technical solution, the matching of graphical rule described in step (5) refers to serial code circulation spatial domain
Dot array data and basis, carry out space periodicity duplication, and production is circulated with what carrier image size matched by multiple serial codes
Spatial domain dot array data is spliced anti-fake dot chart.
As an improvement of the above technical solution, subregion pseudorandom scramble described in step (6) refers to by multiple serial codes
Circulation spatial domain dot array data is spliced anti-fake dot chart, is unit by single serial code circulation spatial domain dot matrix, carries out respectively not
Pseudo random interleaving with order iteration encodes.
As an improvement of the above technical solution, the subregion pseudorandom scramble refer to using different order iteration it is pseudo- with
Machine interweaving encoding is interleaved interative computation to the image of each subregion, including changes interleaving function.
As an improvement of the above technical solution, the blind implantation carrier image of dereferenced described in step (7) refer to will be through excessive
The dot matrix image of the printing quantum dot of area's pseudorandom scramble directly modulates carrier image, realizes information load and hides.
As an improvement of the above technical solution, the carrier image include it is continuous adjust monochrome image, continuously adjust coloured image,
Halftoning monochrome image and halftone color image.
The advantageous effect that the present invention is brought has：
The present invention is based on the Information hiding and its Reliability codes method of printing quantum dot, and printing can be hidden in by being one kind
Reliable, safe information anti-fake, Information hiding and the Information value-added service of anti-counterfeiting mark, image or text message in image
The coding method of technology, the coding method overcome existing half-tone information anti-counterfeiting technology in copy-resistant, the defect of resisting breakage, with
And it is insufficient existing for Information Embedding method simplicity aspect.
Description of the drawings
Below in conjunction with the accompanying drawings and specific embodiment the invention will be further described,
Attached drawing 1 is first embodiment of the present invention flow chart；
Attached drawing 2 is triple inspection Error Correction of Coding flow charts of the present invention.
Specific implementation mode
Embodiment 1
A kind of antifalsification label that the figure punch mode being mainly used in paper delivery medium is printed, anti-counterfeit certificate, anti-fake admission ticket and
The coding method of anti-fake marketable securities.
With reference to attached drawing 1, this approach includes the following steps：
(1) data normalization encodes
The different-format information of anti-counterfeiting mark, image or text is handled, the binary system true form of specification is made
Bit stream data information.
(2) information is encrypted
It to the normalized number evidence of step (1) production, is encrypted according to MD5, RSA or des encryption algorithm, generates ciphertext letter
Breath.
(3) triple inspection Error Corrections of Coding
To the cipher-text information of step (2) production, linear block codes (BCH, RS, CRC) coding, the second weight of the first weight are carried out
Spread spectrum coding, after serial/parallel transformation, then carry out the two-dimentional checksum coding of third weight；The coding is based on binary system bit streams
Data and the string data generated by binary system bit flow datas coding.
(4) quantum dot point cloud artwork is printed
To the dot matrix basis image for the printing quantum dot that (3) three recombination of step inspection Error Correction of Coding generates, pass through number to be printed
The spatial domain dot matrix distribution record data information of son point.
(5) graphical rule matching and subregion replicate
The binary system spatial domain dot array data information generated according to carrier image and step (4) carries out size scale matching, real
Now the subregion of printing quantum dot point cloud chart picture replicates；Graphical rule matching refers to serial code circulation spatial domain dot array data and base
Plinth, carry out space periodicity duplication, production with carrier image size match by multiple serial codes circulate spatial domain dot array data
Be spliced anti-fake dot chart.
(6) subregion pseudorandom scramble
Pseudorandom scramble is carried out to each subregion spatial domain dot array data, generates and randomization, homogeneous state is presented in spatial distribution
The printing quantum dot anti-counterfeiting image of distribution；Subregion pseudorandom scramble refers to by the circulation spatial domain dot array data splicing of multiple serial codes
It is unit by single serial code circulation spatial domain dot matrix, the pseudorandom for carrying out different order iteration respectively is handed over into anti-fake dot chart
Coding is knitted, is specially encoded using the pseudo random interleaving of different order iteration, iteration fortune is interleaved to the image of each subregion
It calculates, including changes interleaving function.
(7) the blind implantation carrier image of dereferenced
To the printing quantum dot anti-counterfeiting image that step (6) generates, using the blind method for implantation of dereferenced, carrier figure is directly modulated
Picture generates the printing quantum dot watermarking images with copy-resistant, resisting breakage, realizes information load and hides.Wherein carrier image
Including continuously adjusting monochrome image, continuously adjusting coloured image, halftoning monochrome image and halftone color image.
(8) it prints out
The printing quantum dot anti-counterfeiting image that step (7) is generated is exported by printing type in paper delivery medium.Printing type
Including inkjet printing and laser printing two ways.
Embodiment 2
It is a kind of antifalsification label that the figure punch mode being mainly used in plastic film medium is printed, anti-counterfeit certificate, anti-fake
The coding method of admission ticket and anti-fake marketable securities.
This method step (1)~(7) are the same as embodiment 1, step (8) printout：The printing quantum dot that step (7) is generated
Anti-counterfeiting image is exported by printing type on plastic film medium.Printing type includes two kinds of sides of inkjet printing and laser printing
Formula.
Embodiment 3
A kind of antifalsification label, anti-counterfeit certificate, the anti-fake admission ticket and anti-fake of the mode of printing printing being mainly used in paper delivery medium
The coding method of marketable securities.
This method step (1)~(7) are the same as embodiment 1, step (8) the output for printing：The printing quantum dot that step (7) is generated
Anti-counterfeiting image is exported by mode of printing in paper delivery medium.Mode of printing includes four kinds of offset printing, gravure, flexo and silk-screen modes.
Embodiment 4
A kind of antifalsification label, anti-counterfeit certificate, the anti-fake admission ticket of the mode of printing printing being mainly used in plastic film medium
With the coding method of anti-fake marketable securities.
This method step (1)~(7) are the same as embodiment 1, step (8) the output for printing：The printing quantum dot that step (7) is generated
Anti-counterfeiting image is exported by mode of printing on plastic film medium.Mode of printing includes four kinds of offset printing, gravure, flexo and silk-screen
Mode.
Embodiment 5
A kind of triple inspection error correction/encoding methods.
With reference to attached drawing 2, this method includes the combination and program circuit of three recodifications, specifically includes following steps：
(1) linear block codes (BCH, RS, CRC) encodes；
(2) Direct Sequence Spread Spectrum coding (DSSS)；
(3) serial/parallel transformation；
(4) two-dimentional checksum coding.
Wherein, the data to be encoded described in (1) step are serial code stream data, including binary system and multi-system data,
Character string；Data to be encoded described in (1) are false proof mark data, text, image and two-dimensional code data；(4) step is strange
Even parity check coding includes two kinds of coding methods of even-odd check of the parity check sum parallel Packet Data of overall parallel data.
Although above describe a variety of different embodiments of the present invention, it is obvious to a person skilled in the art that this
Invention is not limited to the details of above-mentioned exemplary embodiment, and the above is only presently preferred embodiments of the present invention, is not to be regarded as using
In the practical range for limiting the present invention.Any changes and modifications in accordance with the scope of the present application should all be belonged to still
Within the patent covering scope of the present invention.
Simultaneously it should be appreciated that although this specification is described according to embodiment, not each embodiment only includes one
This narrating mode of independent technical solution, this specification is merely for the sake of clarity, and those skilled in the art should will say
As a whole, the technical solutions in the various embodiments may also be suitably combined for bright book, and forming those skilled in the art can be with
The other embodiment of understanding.
Claims (10)
1. the printing quantum dot watermark encoder method of pseudo-random information spatial domain modulation, it is characterised in that：The method using it is pseudo- with
Machine information modulation printing quantum dot spatial domain vector dot array data, makes it carry anti-counterfeiting mark or needs hiding image, text envelope
Breath, this approach includes the following steps：
(1) data normalization encodes；
(2) information is encrypted；
(3) triple inspection Error Corrections of Coding；
(4) quantum dot point cloud artwork is printed；
(5) graphical rule matching and subregion replicate；
(6) subregion pseudorandom scramble；
(7) the blind implantation carrier image of dereferenced.
2. printing quantum dot watermark encoder method according to claim 1, it is characterised in that：The method specifically include with
Lower step：
(1) data normalization encodes
The different-format information of anti-counterfeiting mark, image or text is handled, the binary code flow data of specification is made
Information；
(2) information is encrypted
It to the normalized number evidence of step (1) production, is encrypted according to Encryption Algorithm, generates cipher-text information；
(3) triple inspection Error Corrections of Coding
To the cipher-text information of step (2) production, linear block codes coding, the second heavy spread spectrum coding, the third weight of the first weight are carried out
Two-dimentional checksum coding；
(4) quantum dot point cloud artwork is printed
To the dot matrix basis image for the printing quantum dot that (3) three recombination of step inspection Error Correction of Coding generates, by printing quantum dot
Spatial domain dot matrix distribution record data information；
(5) graphical rule matching and subregion replicate
The binary system spatial domain dot array data information generated according to carrier image and step (4) carries out size scale matching, realizes print
The subregion of brush quantum dot point cloud chart picture replicates；
(6) subregion pseudorandom scramble
Pseudorandom scramble is carried out to each subregion spatial domain dot array data, generates and randomization, homogeneous state distribution is presented in spatial distribution
Printing quantum dot anti-counterfeiting image；
(7) the blind implantation carrier image of dereferenced
The printing quantum dot anti-counterfeiting image generated to step (6) is loaded into using the blind method for implantation of dereferenced on carrier image,
Generate the printing quantum dot watermarking images with copy-resistant, resisting breakage；
(8) printing quantum dot anti-counterfeiting image output.
3. printing quantum dot watermark encoder method according to claim 2, it is characterised in that：Data described in step (1)
Standardization processing includes that anti-counterfeiting mark, image, text, network address, article code, sequence number are carried out standardization processing, advised
The binary system true form bit stream data information of model.
4. printing quantum dot watermark encoder method according to claim 1 or 3, it is characterised in that：Step is believed described in (2)
Encryption for information includes that binary code flow data is encrypted according to MD5, RSA or des encryption algorithm, generates cipher-text information.
5. printing quantum dot watermark encoder method according to claim 4, it is characterised in that：It is triple described in step (3)
It includes the first weight linear block codes coding, the second weight Direct Sequence Spread Spectrum coding to examine Error Correction of Coding, after serial/parallel transformation, then into
The two-dimentional checksum coding of row third weight.
6. printing quantum dot watermark encoder method according to claim 5, it is characterised in that：Step encodes described in (3)
It is to encode the string data generated based on binary system bit flow datas and by binary system bit flow datas.
7. printing quantum dot watermark encoder method according to claim 1 or 5, it is characterised in that：Step is schemed described in (5)
As scale matching refers to carrying out space periodicity duplication, production and carrier figure with serial code circulation spatial domain dot array data and basis
As what size matched is spliced anti-fake dot chart by multiple serial codes circulation spatial domain dot array data.
8. printing quantum dot watermark encoder method according to claim 7, it is characterised in that：Subregion described in step (6)
Pseudorandom scramble refers to being spliced anti-fake dot chart by multiple serial codes circulation spatial domain dot array data, by single serial code stream
It is unit to turn spatial domain dot matrix, carries out the pseudo random interleaving coding of different order iteration respectively.
9. printing quantum dot watermark encoder method according to claim 8, it is characterised in that：The subregion pseudorandom is set
Refer to disorderly being encoded using the pseudo random interleaving of different order iteration, interative computation is interleaved to the image of each subregion, including
Change interleaving function.
10. the printing quantum dot watermark encoder method according to claim 1 or 8, it is characterised in that：Described in step (7)
The blind implantation carrier image of dereferenced refers to that the dot matrix image of the printing quantum dot by subregion pseudorandom scramble is directly modulated load
Body image is realized information load and is hidden.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810408222.5A CN108551540B (en) | 2018-05-02 | 2018-05-02 | Printing quantum dot watermark coding method based on pseudo-random information spatial domain modulation |
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| CN201810408222.5A CN108551540B (en) | 2018-05-02 | 2018-05-02 | Printing quantum dot watermark coding method based on pseudo-random information spatial domain modulation |
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Cited By (5)
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| CN109889311A (en) * | 2019-03-25 | 2019-06-14 | 西安电子科技大学 | Gap channel communication method based on assembly coding |
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| CN111914714A (en) * | 2020-07-24 | 2020-11-10 | 深圳市鹰硕教育服务股份有限公司 | Lattice book interaction method |
| CN112668677A (en) * | 2020-12-21 | 2021-04-16 | 北京印刷学院 | Printed quantum dot information encoding method and decoding method |
| CN113762446A (en) * | 2021-08-13 | 2021-12-07 | 北京印刷学院 | Multicolor spectrum-multispectral composite anti-counterfeiting two-dimensional code based on CMYK common ink |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109889311A (en) * | 2019-03-25 | 2019-06-14 | 西安电子科技大学 | Gap channel communication method based on assembly coding |
| CN110512465A (en) * | 2019-08-28 | 2019-11-29 | 泰中特种纸有限公司 | A kind of method that quantum dot assistant depositing prepares colored anti-counterfei waterprint paper |
| CN111914714A (en) * | 2020-07-24 | 2020-11-10 | 深圳市鹰硕教育服务股份有限公司 | Lattice book interaction method |
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| CN112668677A (en) * | 2020-12-21 | 2021-04-16 | 北京印刷学院 | Printed quantum dot information encoding method and decoding method |
| CN113762446A (en) * | 2021-08-13 | 2021-12-07 | 北京印刷学院 | Multicolor spectrum-multispectral composite anti-counterfeiting two-dimensional code based on CMYK common ink |
| CN113762446B (en) * | 2021-08-13 | 2023-05-05 | 北京印刷学院 | Multi-color spectrum-multi-spectrum composite anti-counterfeiting two-dimensional code based on CMYK common ink |
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