CN102945434A - Double-variant two-dimensional progressive encryption binary anti-counterfeiting printing method - Google Patents

Double-variant two-dimensional progressive encryption binary anti-counterfeiting printing method Download PDF

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CN102945434A
CN102945434A CN2012104027377A CN201210402737A CN102945434A CN 102945434 A CN102945434 A CN 102945434A CN 2012104027377 A CN2012104027377 A CN 2012104027377A CN 201210402737 A CN201210402737 A CN 201210402737A CN 102945434 A CN102945434 A CN 102945434A
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binary
group
counterfeiting information
control variables
operator control
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王明非
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Beijing Institute of Graphic Communication
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Beijing Institute of Graphic Communication
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Abstract

The invention discloses a double-variant two-dimensional progressive encryption binary anti-counterfeiting printing method which comprises the following steps: performing [+++] encrypting operation and channel encoding to binary anti-counterfeiting information to generate a binary modulating signal, and adopting a modulation mode of a looped look-up table method to embed the anti-counterfeiting information into the whole page through sequential change in a shape of amplitude-modulated dot. Therefore, the anti-counterfeiting information can be recognized from any fragment during presswork recognition. The method can be widely applied to the anti-counterfeiting field of presswork.

Description

The bivariate two dimension is gone forward one by one and is encrypted the scale-of-two antiforging printing method
affiliated technical field:
The present invention relates to a kind of anti-counterfeiting printing technology, particularly a kind of bivariate two dimension is gone forward one by one and is encrypted the scale-of-two anti-counterfeiting printing technology, and what this anti-counterfeiting printing technology can be for various printed matters is false proof.
background technology:
Existing comparatively common method for anti-counterfeit has following several: the first is laser anti-false sign, the symbol of product or special identification icon are printed to the anti-fake label of product by the recessive printing ink daylight fluorescence ink of laser printing technology, and the same class product is used the same labeling, because anti-fake label is easier to forge, and the anti-fake label of forging is used on fake products, cause the true and false of product to obscure, therefore be difficult to effectively false proof.The second is the cipher counterfeit-proof labeling, its method adopted is that every product is compiled one group of number, the coding of every product is not identical, this number is printed on labeling and hides, this number is deposited in the Computer Database that can inquire about for the consumer simultaneously, when the consumer buys product, number on sign is compared to identification by phone or networking computer input Computer Database, identical being very, difference is vacation, method is simple, identification easily, be difficult for forging, but in actual the use, because coded data is the rear labeling of printing of the unified generation of computing machine.The true and false coded data of representative products may be faked by illegal copies, and simultaneously, the coding on the product of the also recyclable not inquiry of encoding is made mark and is attached on the false pain product, and antifalse effect is difficult to guarantee.The third is texture anti-fake, false proof with the textural characteristics on its labeling, although more difficult forgery, but due to a serial number of bidding subsides, and be plain code, every piece of labeling can be inquired about repeatedly, in the necessary textural characteristics grid that the fake producer can be by warehouseman or shop-assistant be reflected during by the sequence number on labeling and inquiry have or not phenomenon to plagiarize after by this feature, forge in batches.In sum, all there is certain shortcoming in existing method for anti-counterfeit, thereby can not be from prevent fake products at all.
summary of the invention:
The shortcoming existed in order to overcome existing various printed matter anti-counterfeiting printing technology, the deficiency that the present invention is directed to existing printed matter anti-counterfeiting printing technology existence is improved prior art, a kind of encryption counterfeit printing technology of shape of scale-of-two coded signal modulation printed matter amplitude has been proposed, this anti-counterfeiting printing technology is embedded in anti-counterfeiting information in full page by the change of the shape of amplitude, can when identifying, printed matter identify anti-counterfeiting information from any one fragment, therefore there is very strong crush resistance, can fundamentally stop to adopt and take a picture, scanning waits the bootlegging behavior.
The technical solution adopted for the present invention to solve the technical problems is: the amplitude in the flexographic printing hybrid screening and frequency-modulation halftone dot are separately processed, utilize image information, Word message, the anti-counterfeiting information such as trademark information generate the binary system anti-counterfeiting information table of 8 group, for preventing from ciphering process producing information spillover, 8 one group of binary messages in binary system anti-counterfeiting information table are expanded to 16 one group of binary messages, the generation most-significant byte is 0 16 one group binary system anti-counterfeiting information table entirely, 16 binary messages of i in 16 one group binary system anti-counterfeiting information table group are denoted as to N ii is greater than 0 positive integer, the eight-digit binary number encryption parameter is denoted as C, the positive integer that encryption parameter C is 0<=C<=256, two binary operator control variables are denoted as k, the positive integer that operator control variables k is 0<=k<=3, and eight control variables are denoted as j, the positive integer that control variables j is 0<=j<=256, operator
Figure 248683DEST_PATH_IMAGE001
adopt+,-, *, tetra-kinds of operators of ÷, during operator control variables k=0 be defined as respectively+, * ,-, ÷ ,+, ÷ ,+, *, during operator control variables k=1 be defined as respectively+, ÷ ,-, * ,+, ÷ ,+, *, during operator control variables k=2
Figure 497896DEST_PATH_IMAGE001
be defined as respectively-, ÷ ,+, * ,+, ÷ ,+, *, during operator control variables k=3
Figure 226555DEST_PATH_IMAGE001
be defined as respectively+, * ,+, ÷ ,-, ÷ ,+, *, during operator control variables k=0 cryptographic calculation be defined as [
Figure 83652DEST_PATH_IMAGE002
+
Figure 715622DEST_PATH_IMAGE003
+
Figure 304866DEST_PATH_IMAGE004
+
Figure 350183DEST_PATH_IMAGE005
], during operator control variables k=1 cryptographic calculation be defined as [
Figure 683075DEST_PATH_IMAGE006
+
Figure 231868DEST_PATH_IMAGE007
+
Figure 759058DEST_PATH_IMAGE004
+
Figure 963774DEST_PATH_IMAGE005
], during operator control variables k=2 cryptographic calculation be defined as [
Figure 162674DEST_PATH_IMAGE006
+
Figure 503657DEST_PATH_IMAGE003
+
Figure 700283DEST_PATH_IMAGE008
+
Figure 454613DEST_PATH_IMAGE005
], during operator control variables k=3 cryptographic calculation be defined as [
Figure 627843DEST_PATH_IMAGE006
+
Figure 88911DEST_PATH_IMAGE003
+
Figure 518755DEST_PATH_IMAGE004
+
Figure 432485DEST_PATH_IMAGE009
], the initial value of setting encryption parameter C, initial value j=0 and the k=0 of setting operator control variables j and k, set 16 binary message N in 16 one group binary system anti-counterfeiting information table iPosition Control variable i=1, first 16 binary message N from 16 one group binary system anti-counterfeiting information table 1start, to each 16 binary message in 16 one group binary system anti-counterfeiting information table carry out [
Figure 910871DEST_PATH_IMAGE002
+
Figure 554341DEST_PATH_IMAGE003
+
Figure 328656DEST_PATH_IMAGE004
+
Figure 995261DEST_PATH_IMAGE005
] cryptographic calculation, and each 16 binary message is carried out [
Figure 74075DEST_PATH_IMAGE002
+
Figure 509736DEST_PATH_IMAGE003
+ +
Figure 169704DEST_PATH_IMAGE005
] carry out i+1, j+1 and k+1 computing when cryptographic calculation, make next computing point to [
Figure 52209DEST_PATH_IMAGE006
+
Figure 840912DEST_PATH_IMAGE007
+
Figure 721143DEST_PATH_IMAGE004
+
Figure 159077DEST_PATH_IMAGE005
] wherein i, j and k all increased by 1, by each 16 binary message in 16 one group binary system anti-counterfeiting information table carry out [
Figure 517378DEST_PATH_IMAGE002
+
Figure 989947DEST_PATH_IMAGE003
+
Figure 775501DEST_PATH_IMAGE004
+
Figure 139879DEST_PATH_IMAGE005
] cryptographic calculation, generating the binary add tight defense fake information table of 16 group, the shape of amplitude is set to two kinds:
Figure 364187DEST_PATH_IMAGE010
with , wherein
Figure 913297DEST_PATH_IMAGE010
be defined as the numeral 0, be defined as numeral 1, utilize the binary add tight defense fake information of 16 group generated by circulation look-up table modulation amplitude, make the shape of amplitude in its regular hybrid screening of the alteration of form according to above-mentioned two kinds of amplitudes, make in hybrid screening that the shape of amplitude is well-regulated to change, after modulation, adjacent 16 amplitudes form one group of 16 binary message, make it carry anti-counterfeiting information, and this anti-counterfeiting information is embedded in the full page site, can more effectively resist based on bootlegging behaviors such as camera, scanner, electronic documents.Obvious embed extractible anti-counterfeiting information by non-in printed matter, can provide valid certificates for genuine piece, there is stronger anti-forgery ability simultaneously, and do not increase extra false proof cost.
For solving above-mentioned technical matters, at first anti-counterfeiting information is carried out to digitizing, generate the scale-of-two anti-counterfeiting information table of 8 group, anti-counterfeiting information can be image information, Word message, trademark information etc., 8 one group of binary messages in scale-of-two anti-counterfeiting information table are expanded to 16 one group of binary messages, the generation most-significant byte is 0 16 one group scale-of-two anti-counterfeiting information table entirely, and each 16 binary message in 16 one group scale-of-two anti-counterfeiting information table are carried out
[
Figure 963610DEST_PATH_IMAGE002
+
Figure 145193DEST_PATH_IMAGE003
+
Figure 36663DEST_PATH_IMAGE004
+
Figure 936486DEST_PATH_IMAGE005
] cryptographic calculation, generate the binary add tight defense fake information table of 16 group, utilize 16 binary messages process chnnel codings in 16 the one group binary add tight defense fake information table generated, generate the binary modulated signal of 16 group with error detecting and error correcting function.Chnnel coding can adopt the various ways such as loop coding, convolutional encoding or Turbo coding, original continuous is changed the line map, and image signal is processed (RIP) through rasterizing and hybrid screening is exported shadow tone hybrid screening picture signal, comprising amplitude and FM screened image signal, 16 one group of binary modulated signals that utilize to generate adopt the shapes of amplitude in circulation look-up table modulation system modulation hybrid screening picture signals, the shape that makes amplitude according to
Figure 440279DEST_PATH_IMAGE010
with regular changing, make adjacent 16 amplitudes in the hybrid screening picture signal carry 16 scale-of-two anti-counterfeiting information by the change of shape, thereby be created on the hybrid screening picture signal that embeds anti-counterfeiting information in the full page site, realizes anti-counterfeit printing.
When extracting anti-counterfeiting information, at first gather the halftone dot image signal, through the fuzzy diagnosis of the shape to amplitude, differentiate the shape of amplitude, extract edge signal and the shape information of amplitude, the shape information of demodulation amplitude, export the binary modulated signal of 16 group.The binary modulated signal of 16 one group to demodulation output carries out channel-decoding, generates the scale-of-two deciphering anti-counterfeiting information table of 16 group after channel-decoding, and 16 binary messages that scale-of-two is deciphered in the anti-counterfeiting information table are denoted as H i, it is known by ciphering process,
H during operator control variable k=0 i=[
Figure 40205DEST_PATH_IMAGE002
+
Figure 365007DEST_PATH_IMAGE003
+
Figure 469229DEST_PATH_IMAGE004
+
Figure 52833DEST_PATH_IMAGE005
],
H during operator control variable k=1 i=[ +
Figure 396407DEST_PATH_IMAGE007
+
Figure 507583DEST_PATH_IMAGE004
+ ],
H during operator control variable k=2 i=[
Figure 423903DEST_PATH_IMAGE006
+ +
Figure 402278DEST_PATH_IMAGE008
+
Figure 470728DEST_PATH_IMAGE005
],
H during operator control variable k=3 i=[
Figure 609586DEST_PATH_IMAGE006
+
Figure 130697DEST_PATH_IMAGE003
+
Figure 380413DEST_PATH_IMAGE004
+
Figure 303369DEST_PATH_IMAGE009
], 16 binary message H in scale-of-two deciphering anti-counterfeiting information table iposition control variable initial value design be i=1, first H from scale-of-two deciphering anti-counterfeiting information table 1start, each 16 binary message in scale-of-two deciphering anti-counterfeiting information table are carried out to H i=[
Figure 52276DEST_PATH_IMAGE002
+
Figure 123000DEST_PATH_IMAGE003
+ +
Figure 953870DEST_PATH_IMAGE005
] decrypt operation, solve scale-of-two anti-counterfeiting information N i, the generation most-significant byte is 0 16 one group scale-of-two anti-counterfeiting information table entirely, removes most-significant byte, generates the scale-of-two anti-counterfeiting information table of 8 group, recovers anti-counterfeiting signal and also exports anti-counterfeiting information.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described.
Fig. 1 loads the anti-counterfeiting information process flow diagram.
Fig. 2 extracts the anti-counterfeiting information process flow diagram.
Embodiment
In loading anti-counterfeiting information flow chart 1, original anti-counterfeiting information (image, word, trade mark) is through digitized processing, generate the binary system anti-counterfeiting information table of 8 group, 8 one group of binary messages in binary system anti-counterfeiting information table are expanded to 16 one group of binary messages, generate most-significant byte and be entirely 0 16 one group binary system anti-counterfeiting information table, 16 binary messages of i group in 16 one group binary system anti-counterfeiting information table are denoted as N iI is greater than 0 positive integer, the eight-digit binary number encryption parameter is denoted as C, the positive integer that encryption parameter C is 0<=C<=256, two binary operator control variables are denoted as k, the positive integer that operator control variables k is 0<=k<=3, and eight control variables are denoted as j, the positive integer that control variables j is 0<=j<=256, operator
Figure 372213DEST_PATH_IMAGE001
Adopt+,-, *, tetra-kinds of operators of ÷, during operator control variables k=0
Figure 602337DEST_PATH_IMAGE001
Be defined as respectively+, * ,-, ÷ ,+, ÷ ,+, *, during operator control variables k=1
Figure 459435DEST_PATH_IMAGE001
Be defined as respectively+, ÷ ,-, * ,+, ÷ ,+, *, during operator control variables k=2
Figure 589939DEST_PATH_IMAGE001
Be defined as respectively-, ÷ ,+, * ,+, ÷ ,+, *, during operator control variables k=3
Figure 241500DEST_PATH_IMAGE001
Be defined as respectively+, * ,+, ÷ ,-, ÷ ,+, *, during operator control variables k=0 cryptographic calculation be defined as [
Figure 224500DEST_PATH_IMAGE002
+
Figure 557392DEST_PATH_IMAGE003
+ +
Figure 131910DEST_PATH_IMAGE005
], during operator control variables k=1 cryptographic calculation be defined as [
Figure 398943DEST_PATH_IMAGE006
+
Figure 771412DEST_PATH_IMAGE007
+
Figure 377974DEST_PATH_IMAGE004
+
Figure 636917DEST_PATH_IMAGE005
], during operator control variables k=2 cryptographic calculation be defined as [
Figure 63350DEST_PATH_IMAGE006
+ +
Figure 527010DEST_PATH_IMAGE008
+
Figure 127493DEST_PATH_IMAGE005
], during operator control variables k=3 cryptographic calculation be defined as [ + + +
Figure 763825DEST_PATH_IMAGE009
], the initial value of setting encryption parameter C, initial value j=0 and the k=0 of setting operator control variables j and k, set 16 binary message N in 16 one group binary system anti-counterfeiting information table iPosition Control variable i=1, first 16 binary message N from 16 one group binary system anti-counterfeiting information table 1Start, to each 16 binary message in 16 one group binary system anti-counterfeiting information table carry out [
Figure 227167DEST_PATH_IMAGE002
+
Figure 509244DEST_PATH_IMAGE003
+ + ] cryptographic calculation, and each 16 binary message is carried out [
Figure 106338DEST_PATH_IMAGE002
+
Figure 988843DEST_PATH_IMAGE003
+
Figure 279010DEST_PATH_IMAGE004
+ ] carry out i+1, j+1 and k+1 computing when cryptographic calculation, make next computing point to [
Figure 331597DEST_PATH_IMAGE006
+
Figure 454012DEST_PATH_IMAGE007
+
Figure 661002DEST_PATH_IMAGE004
+
Figure 712135DEST_PATH_IMAGE005
] wherein i, j and k all increased by 1, by each 16 binary message in 16 one group binary system anti-counterfeiting information table carry out [
Figure 575049DEST_PATH_IMAGE002
+ + +
Figure 348467DEST_PATH_IMAGE005
] cryptographic calculation, generating the binary add tight defense fake information table of 16 group, the shape of amplitude is set to two kinds:
Figure 758781DEST_PATH_IMAGE010
With , wherein
Figure 906045DEST_PATH_IMAGE010
Be defined as the numeral 0,
Figure 298981DEST_PATH_IMAGE011
Be defined as numeral 1,16 binary add tight defense fake informations of generation, through chnnel coding, generate the binary modulated signal with error detecting and error correcting function.Chnnel coding can adopt the various ways such as loop coding, convolutional encoding or Turbo coding.Original continuous is changed the line map, and image signal is processed (RIP) through rasterizing and hybrid screening is exported shadow tone hybrid screening picture signal, comprising amplitude and FM screened image signal.Utilize the binary modulated signal generated to adopt the modulation system of tabling look-up that circulates, the shape of amplitude in modulation hybrid screening picture signal, make in hybrid screening that the shape of amplitude is regular to change, generate the hybrid screening picture signal that embeds anti-counterfeiting information, by the circulation modulation system of tabling look-up, make adjacent 16 amplitudes generate 16 bit binary data by the change of shape, make it carry anti-counterfeiting information, and this anti-counterfeiting information is embedded in the full page site, realize anti-counterfeit printing.
In extracting anti-counterfeiting information process flow diagram 2, when extracting anti-counterfeiting information, at first gather the halftone dot image signal, fuzzy diagnosis through the shape to amplitude, differentiate the shape of amplitude, extract edge signal and the shape information of amplitude, the shape information of demodulation amplitude, export the binary modulated signal of 16 group.The binary modulated signal of 16 one group to demodulation output carries out channel-decoding, generates the scale-of-two deciphering anti-counterfeiting information table of 16 group after channel-decoding, and 16 binary messages that scale-of-two is deciphered in the anti-counterfeiting information table are denoted as H i, it is known by ciphering process,
H during operator control variable k=0 i=[ +
Figure 702597DEST_PATH_IMAGE003
+ +
Figure 801058DEST_PATH_IMAGE005
],
H during operator control variable k=1 i=[
Figure 860281DEST_PATH_IMAGE006
+
Figure 230082DEST_PATH_IMAGE007
+
Figure 323940DEST_PATH_IMAGE004
+
Figure 58678DEST_PATH_IMAGE005
],
H during operator control variable k=2 i=[
Figure 667514DEST_PATH_IMAGE006
+
Figure 14575DEST_PATH_IMAGE003
+
Figure 25256DEST_PATH_IMAGE008
+
Figure 930895DEST_PATH_IMAGE005
],
H during operator control variable k=3 i=[
Figure 964711DEST_PATH_IMAGE006
+
Figure 676315DEST_PATH_IMAGE003
+
Figure 744765DEST_PATH_IMAGE004
+
Figure 883622DEST_PATH_IMAGE009
], 16 binary message H in scale-of-two deciphering anti-counterfeiting information table iposition control variable initial value design be i=1, first H from scale-of-two deciphering anti-counterfeiting information table 1start, each 16 binary message in scale-of-two deciphering anti-counterfeiting information table are carried out to H i=[
Figure 637689DEST_PATH_IMAGE002
+
Figure 152984DEST_PATH_IMAGE003
+
Figure 75941DEST_PATH_IMAGE004
+
Figure 323382DEST_PATH_IMAGE005
] decrypt operation, solve scale-of-two anti-counterfeiting information N i, the generation most-significant byte is 0 16 one group scale-of-two anti-counterfeiting information table entirely, removes most-significant byte, generates the scale-of-two anti-counterfeiting information table of 8 group, recovers anti-counterfeiting signal and also exports anti-counterfeiting information.

Claims (1)

1. one kind generates the binary modulated signal by anti-counterfeiting information by cryptographic calculation and chnnel coding, and anti-counterfeiting information is embedded in to bivariate two dimension in full page goes forward one by one and encrypt the binary system antiforging printing method by the circulation modulation system of tabling look-up, It is characterized in that:Anti-counterfeiting information is carried out to digitlization, generate the binary system anti-counterfeiting information table of 8 group, anti-counterfeiting information is image information, Word message or trademark information, for preventing from ciphering process producing information spillover, 8 one group of binary messages in binary system anti-counterfeiting information table are expanded to 16 one group of binary messages, the generation most-significant byte is 0 16 one group binary system anti-counterfeiting information table entirely, and 16 binary messages of the group of the i in 16 one group binary system anti-counterfeiting information table are denoted as to N iI is greater than 0 positive integer, the eight-digit binary number encryption parameter is denoted as C, the positive integer that encryption parameter C is 0<=C<=256, two binary operator control variables are denoted as k, the positive integer that operator control variables k is 0<=k<=3, and eight control variables are denoted as j, the positive integer that control variables j is 0<=j<=256, operator
Figure 2012104027377100001DEST_PATH_IMAGE001
Adopt+,-, *, tetra-kinds of operators of ÷, during operator control variables k=0 Be defined as respectively+, * ,-, ÷ ,+, ÷ ,+, *, during operator control variables k=1
Figure 652381DEST_PATH_IMAGE001
Be defined as respectively+, ÷ ,-, * ,+, ÷ ,+, *, during operator control variables k=2
Figure 534887DEST_PATH_IMAGE001
Be defined as respectively-, ÷ ,+, * ,+, ÷ ,+, *, during operator control variables k=3
Figure 326519DEST_PATH_IMAGE001
Be defined as respectively+, * ,+, ÷ ,-, ÷ ,+, *, during operator control variables k=0 cryptographic calculation be defined as [
Figure 269067DEST_PATH_IMAGE002
+ +
Figure 644685DEST_PATH_IMAGE004
+
Figure 2012104027377100001DEST_PATH_IMAGE005
], during operator control variables k=1 cryptographic calculation be defined as [
Figure 940668DEST_PATH_IMAGE006
+
Figure 2012104027377100001DEST_PATH_IMAGE007
+
Figure 849456DEST_PATH_IMAGE004
+
Figure 962905DEST_PATH_IMAGE005
], during operator control variables k=2 cryptographic calculation be defined as [
Figure 825819DEST_PATH_IMAGE006
+
Figure 987810DEST_PATH_IMAGE003
+
Figure 49307DEST_PATH_IMAGE008
+
Figure 271341DEST_PATH_IMAGE005
], during operator control variables k=3 cryptographic calculation be defined as [
Figure 683868DEST_PATH_IMAGE006
+
Figure 151015DEST_PATH_IMAGE003
+
Figure 270280DEST_PATH_IMAGE004
+ ], the initial value of setting encryption parameter C, initial value j=0 and the k=0 of setting operator control variables j and k, set 16 binary message N in 16 one group binary system anti-counterfeiting information table iPosition Control variable i=1, first 16 binary message N from 16 one group binary system anti-counterfeiting information table 1Start, to each 16 binary message in 16 one group binary system anti-counterfeiting information table carry out [
Figure 397636DEST_PATH_IMAGE002
+
Figure 297459DEST_PATH_IMAGE003
+
Figure 801253DEST_PATH_IMAGE004
+
Figure 539139DEST_PATH_IMAGE005
] cryptographic calculation, and each 16 binary message is carried out [ +
Figure 224516DEST_PATH_IMAGE003
+
Figure 594317DEST_PATH_IMAGE004
+ ] carry out i+1, j+1 and k+1 computing when cryptographic calculation, make next computing point to [
Figure 157334DEST_PATH_IMAGE006
+
Figure 766170DEST_PATH_IMAGE007
+
Figure 378810DEST_PATH_IMAGE004
+
Figure 389491DEST_PATH_IMAGE005
] wherein i, j and k all increased by 1, by each 16 binary message in 16 one group binary system anti-counterfeiting information table carry out [
Figure 295130DEST_PATH_IMAGE002
+
Figure 328945DEST_PATH_IMAGE003
+
Figure 40550DEST_PATH_IMAGE004
+
Figure 843420DEST_PATH_IMAGE005
] cryptographic calculation, generating the binary add tight defense fake information table of 16 group, the shape of amplitude is set to two kinds:
Figure 982278DEST_PATH_IMAGE010
With
Figure 2012104027377100001DEST_PATH_IMAGE011
, wherein
Figure 939607DEST_PATH_IMAGE010
Be defined as the numeral 0,
Figure 189323DEST_PATH_IMAGE011
Be defined as numeral 1, utilize the binary add tight defense fake information of 16 group generated through chnnel coding, generation has 16 one group of binary modulated signals of error detecting and error correcting function, original continuous is changed the line map, and image signal is processed (RIP) through rasterizing and hybrid screening is exported halftoning hybrid screening picture signal, comprising amplitude and FM screened image signal, 16 one group of binary modulated signals that utilize to generate adopt the shapes of amplitude in circulation look-up table modulation system modulation hybrid screening picture signals, the shape that makes amplitude according to
Figure 112280DEST_PATH_IMAGE010
With
Figure 422038DEST_PATH_IMAGE011
Regular changing, make adjacent 16 amplitudes in the hybrid screening picture signal carry 16 binary add tight defense fake informations by the change of shape, thereby be created on the hybrid screening picture signal that embeds anti-counterfeiting information in the full page site, realize anti-counterfeit printing.
CN2012104027377A 2012-10-22 2012-10-22 Double-variant two-dimensional progressive encryption binary anti-counterfeiting printing method Pending CN102945434A (en)

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Application publication date: 20130227