CN102945462A - Three-dimensional sequentially-changed single-parameter circular encryption binary anti-counterfeiting printing method - Google Patents

Three-dimensional sequentially-changed single-parameter circular encryption binary anti-counterfeiting printing method Download PDF

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CN102945462A
CN102945462A CN2012104028793A CN201210402879A CN102945462A CN 102945462 A CN102945462 A CN 102945462A CN 2012104028793 A CN2012104028793 A CN 2012104028793A CN 201210402879 A CN201210402879 A CN 201210402879A CN 102945462 A CN102945462 A CN 102945462A
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counterfeiting information
control variables
information table
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CN102945462B (en
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张明名
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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 three-dimensional sequentially-changed single-parameter circular 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 three-dimensional order one-parameter circulation encryption scale-of-two antiforging printing method that becomes
affiliated technical field:
The present invention relates to a kind of anti-counterfeiting printing technology, particularly a kind ofly three-dimensional become the circulation of order one-parameter and encrypt the scale-of-two anti-counterfeiting printing technology, 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 system control variables are denoted as k, the positive integer that control variables k is 0<=k<=3, and tetrad operator control variables is denoted as j, the positive integer that operator control variables j is 0<=j<=16, operator
Figure 834439DEST_PATH_IMAGE001
adopt+,-, *, tetra-kinds of operators of ÷, during control variables k=0 be defined as respectively+, * ,+, ÷ ,-, * ,-, ÷ ,+,-, during control variables k=1
Figure 261058DEST_PATH_IMAGE001
be defined as respectively-, * ,+, ÷ ,+, * ,-, ÷ ,+,-, during control variables k=2
Figure 715173DEST_PATH_IMAGE001
be defined as respectively-, ÷ ,+, ÷ ,-, * ,+, * ,+,-, during control variables k=3
Figure 24932DEST_PATH_IMAGE001
be defined as respectively+,-,+, ÷ ,-, * ,-, ÷ ,+, *, during control variables k=0 cryptographic calculation be defined as [
Figure 689132DEST_PATH_IMAGE002
+
Figure 742538DEST_PATH_IMAGE003
+
Figure 51160DEST_PATH_IMAGE004
+
Figure 125295DEST_PATH_IMAGE005
], during control variables k=1 cryptographic calculation be defined as [ + +
Figure 437962DEST_PATH_IMAGE004
+
Figure 682998DEST_PATH_IMAGE005
], during control variables k=2 cryptographic calculation be defined as [
Figure 728315DEST_PATH_IMAGE006
+
Figure 592366DEST_PATH_IMAGE003
+
Figure 141159DEST_PATH_IMAGE008
+ ], during control variables k=3 cryptographic calculation be defined as [
Figure 558550DEST_PATH_IMAGE006
+
Figure 491871DEST_PATH_IMAGE003
+
Figure 754225DEST_PATH_IMAGE004
+
Figure 13168DEST_PATH_IMAGE009
], the initial value of setting encryption parameter C, initial value k=0 and the j=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 970760DEST_PATH_IMAGE002
+
Figure 973351DEST_PATH_IMAGE003
+
Figure 90212DEST_PATH_IMAGE004
+
Figure 254477DEST_PATH_IMAGE005
] cryptographic calculation, and each 16 binary message is carried out [
Figure 964944DEST_PATH_IMAGE002
+ +
Figure 477014DEST_PATH_IMAGE004
+ ] carry out i+1, j+1 and k+1 computing when cryptographic calculation, make next computing point to [
Figure 9943DEST_PATH_IMAGE006
+
Figure 947812DEST_PATH_IMAGE007
+
Figure 445790DEST_PATH_IMAGE004
+
Figure 420699DEST_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 230392DEST_PATH_IMAGE002
+
Figure 112897DEST_PATH_IMAGE003
+
Figure 934223DEST_PATH_IMAGE004
+ ] cryptographic calculation, generating the binary add tight defense fake information table of 16 group, the shape of amplitude is set to two kinds: with
Figure 328798DEST_PATH_IMAGE011
, wherein
Figure 4630DEST_PATH_IMAGE010
be defined as the numeral 0,
Figure 118080DEST_PATH_IMAGE011
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 636786DEST_PATH_IMAGE002
+
Figure 329935DEST_PATH_IMAGE003
+
Figure 657011DEST_PATH_IMAGE004
+
Figure 534837DEST_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 681785DEST_PATH_IMAGE010
with
Figure 178625DEST_PATH_IMAGE011
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 360208DEST_PATH_IMAGE002
+
Figure 420654DEST_PATH_IMAGE003
+
Figure 789319DEST_PATH_IMAGE004
+
Figure 355429DEST_PATH_IMAGE005
],
H during operator control variable k=1 i=[
Figure 984994DEST_PATH_IMAGE006
+
Figure 611147DEST_PATH_IMAGE007
+
Figure 201528DEST_PATH_IMAGE004
+
Figure 571330DEST_PATH_IMAGE005
],
H during operator control variable k=2 i=[
Figure 320980DEST_PATH_IMAGE006
+
Figure 118035DEST_PATH_IMAGE003
+
Figure 195712DEST_PATH_IMAGE008
+
Figure 697101DEST_PATH_IMAGE005
],
H during operator control variable k=3 i=[ +
Figure 144580DEST_PATH_IMAGE003
+ +
Figure 545791DEST_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 602106DEST_PATH_IMAGE004
+
Figure 710876DEST_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 system control variables are denoted as k, the positive integer that control variables k is 0<=k<=3, and tetrad operator control variables is denoted as j, the positive integer that operator control variables j is 0<=j<=16, operator
Figure 164991DEST_PATH_IMAGE001
Adopt+,-, *, tetra-kinds of operators of ÷, during control variables k=0
Figure 474750DEST_PATH_IMAGE001
Be defined as respectively+, * ,+, ÷ ,-, * ,-, ÷ ,+,-, during control variables k=1
Figure 873370DEST_PATH_IMAGE001
Be defined as respectively-, * ,+, ÷ ,+, * ,-, ÷ ,+,-, during control variables k=2
Figure 926777DEST_PATH_IMAGE001
Be defined as respectively-, ÷ ,+, ÷ ,-, * ,+, * ,+,-, during control variables k=3
Figure 235398DEST_PATH_IMAGE001
Be defined as respectively+,-,+, ÷ ,-, * ,-, ÷ ,+, *, during control variables k=0 cryptographic calculation be defined as [
Figure 716058DEST_PATH_IMAGE002
+
Figure 867554DEST_PATH_IMAGE003
+
Figure 927914DEST_PATH_IMAGE004
+
Figure 887779DEST_PATH_IMAGE005
], during control variables k=1 cryptographic calculation be defined as [ +
Figure 912553DEST_PATH_IMAGE007
+
Figure 776604DEST_PATH_IMAGE004
+
Figure 590976DEST_PATH_IMAGE005
], during control variables k=2 cryptographic calculation be defined as [
Figure 6914DEST_PATH_IMAGE006
+
Figure 742789DEST_PATH_IMAGE003
+
Figure 941689DEST_PATH_IMAGE008
+
Figure 204043DEST_PATH_IMAGE005
], during control variables k=3 cryptographic calculation be defined as [ + +
Figure 423169DEST_PATH_IMAGE004
+
Figure 540029DEST_PATH_IMAGE009
], the initial value of setting encryption parameter C, initial value k=0 and the j=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 704295DEST_PATH_IMAGE002
+ +
Figure 548940DEST_PATH_IMAGE004
+
Figure 926831DEST_PATH_IMAGE005
] cryptographic calculation, and each 16 binary message is carried out [ +
Figure 459761DEST_PATH_IMAGE003
+
Figure 397630DEST_PATH_IMAGE004
+
Figure 630028DEST_PATH_IMAGE005
] carry out i+1, j+1 and k+1 computing when cryptographic calculation, make next computing point to [
Figure 870517DEST_PATH_IMAGE006
+
Figure 821155DEST_PATH_IMAGE007
+
Figure 297136DEST_PATH_IMAGE004
+ ] 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 61010DEST_PATH_IMAGE002
+
Figure 92419DEST_PATH_IMAGE003
+
Figure 778616DEST_PATH_IMAGE004
+
Figure 454448DEST_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 567897DEST_PATH_IMAGE010
With
Figure 86603DEST_PATH_IMAGE011
, wherein
Figure 779753DEST_PATH_IMAGE010
Be defined as the numeral 0,
Figure 106829DEST_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 719076DEST_PATH_IMAGE002
+ +
Figure 628443DEST_PATH_IMAGE004
+ ],
H during operator control variable k=1 i=[
Figure 858753DEST_PATH_IMAGE006
+
Figure 961838DEST_PATH_IMAGE007
+
Figure 527949DEST_PATH_IMAGE004
+
Figure 423093DEST_PATH_IMAGE005
],
H during operator control variable k=2 i=[
Figure 49246DEST_PATH_IMAGE006
+
Figure 639627DEST_PATH_IMAGE003
+
Figure 9429DEST_PATH_IMAGE008
+
Figure 759079DEST_PATH_IMAGE005
],
H during operator control variable k=3 i=[ +
Figure 633811DEST_PATH_IMAGE003
+
Figure 135200DEST_PATH_IMAGE004
+ ], 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 582678DEST_PATH_IMAGE002
+
Figure 678810DEST_PATH_IMAGE003
+
Figure 983890DEST_PATH_IMAGE004
+
Figure 317919DEST_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 three-dimensional in full page becomes the circulation of order one-parameter 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 system control variables are denoted as k, the positive integer that control variables k is 0<=k<=3, and tetrad operator control variables is denoted as j, the positive integer that operator control variables j is 0<=j<=16, operator
Figure 2012104028793100001DEST_PATH_IMAGE001
Adopt+,-, *, tetra-kinds of operators of ÷, during control variables k=0
Figure 137990DEST_PATH_IMAGE001
Be defined as respectively+, * ,+, ÷ ,-, * ,-, ÷ ,+,-, during control variables k=1
Figure 314893DEST_PATH_IMAGE001
Be defined as respectively-, * ,+, ÷ ,+, * ,-, ÷ ,+,-, during control variables k=2
Figure 830188DEST_PATH_IMAGE001
Be defined as respectively-, ÷ ,+, ÷ ,-, * ,+, * ,+,-, during control variables k=3
Figure 612199DEST_PATH_IMAGE001
Be defined as respectively+,-,+, ÷ ,-, * ,-, ÷ ,+, *, during control variables k=0 cryptographic calculation be defined as [
Figure 2012104028793100001DEST_PATH_IMAGE002
+
Figure 390800DEST_PATH_IMAGE003
+
Figure 2012104028793100001DEST_PATH_IMAGE004
+
Figure 523841DEST_PATH_IMAGE005
], during control variables k=1 cryptographic calculation be defined as [
Figure 2012104028793100001DEST_PATH_IMAGE006
+
Figure 170723DEST_PATH_IMAGE007
+ +
Figure 960004DEST_PATH_IMAGE005
], during control variables k=2 cryptographic calculation be defined as [
Figure 111500DEST_PATH_IMAGE006
+
Figure 171860DEST_PATH_IMAGE003
+
Figure 2012104028793100001DEST_PATH_IMAGE008
+
Figure 459622DEST_PATH_IMAGE005
], during control variables k=3 cryptographic calculation be defined as [
Figure 845604DEST_PATH_IMAGE006
+
Figure 625341DEST_PATH_IMAGE003
+
Figure 614025DEST_PATH_IMAGE004
+
Figure 897239DEST_PATH_IMAGE009
], the initial value of setting encryption parameter C, initial value k=0 and the j=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 719702DEST_PATH_IMAGE002
+
Figure 580210DEST_PATH_IMAGE003
+
Figure 779110DEST_PATH_IMAGE004
+
Figure 916831DEST_PATH_IMAGE005
] cryptographic calculation, and each 16 binary message is carried out [ + +
Figure 463853DEST_PATH_IMAGE004
+
Figure 580713DEST_PATH_IMAGE005
] carry out i+1, j+1 and k+1 computing when cryptographic calculation, make next computing point to [
Figure 479399DEST_PATH_IMAGE006
+
Figure 721025DEST_PATH_IMAGE007
+
Figure 589623DEST_PATH_IMAGE004
+
Figure 764253DEST_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 99419DEST_PATH_IMAGE002
+
Figure 421816DEST_PATH_IMAGE003
+ +
Figure 467450DEST_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 2012104028793100001DEST_PATH_IMAGE010
With , wherein
Figure 252052DEST_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 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 80517DEST_PATH_IMAGE010
With
Figure 491906DEST_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.
CN201210402879.3A 2012-10-22 2012-10-22 Three-dimensional change sequence one-parameter circulation encrypted binary antiforging printing method Expired - Fee Related CN102945462B (en)

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