CN110245535A - A kind of coding endothecium structure - Google Patents
A kind of coding endothecium structure Download PDFInfo
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- CN110245535A CN110245535A CN201910714508.0A CN201910714508A CN110245535A CN 110245535 A CN110245535 A CN 110245535A CN 201910714508 A CN201910714508 A CN 201910714508A CN 110245535 A CN110245535 A CN 110245535A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
- G06K19/06046—Constructional details
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
- G06K19/06046—Constructional details
- G06K19/06093—Constructional details the marking being constructed out of a plurality of similar markings, e.g. a plurality of barcodes randomly oriented on an object
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
- G06K7/10861—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices sensing of data fields affixed to objects or articles, e.g. coded labels
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Abstract
A kind of coding endothecium structure of the present invention belongs to packed and transported, encrypting and decrypting and field of information security technology；The coding endothecium structure surface is provided with the first disk, the second disk and third disk；First disk includes fringe period of the n central angle at arithmetic progression in circumferencial direction, and the fringe gray level in each fringe period is monotonically changed；Second disk includes pi fringe period in circumferencial direction, and the fringe gray level in each fringe period is monotonically changed；The third disk includes 1 start line and the n position line in circumferencial direction；The present invention can change the mode that personal information is directly displayed on express delivery document, and then be resolved personal information fundamentally by the problem of express delivery document leakage.
Description
The application is the divisional application of application for a patent for invention " the information coding structure based on circumferential arrangement striped array ".
The original bill applying date: 2016-11-19.
Original bill application number: 2016110319690.
Original bill denomination of invention: the information coding structure based on circumferential arrangement striped array.
Technical field
A kind of coding endothecium structure of the present invention belongs to packed and transported, encrypting and decrypting and field of information security technology.
Technical background
Online shopping has become a kind of consumption pattern indispensable in for people's lives, and express delivery list also becomes between both parties
The important documents of transaction.Currently, since the personal information of both parties can be directly displayed on express delivery document, and according to express delivery
Information on document is dispensed, therefore the personal information of both parties can be completely exposed in the links of dispatching, this
It is just easy to cause the loss of personal information.It shows according to investigations, the personal information more than 70% is leaked by express delivery document, this gives
Daily life brings many puzzlements, or even causes serious economic loss.
In face of the safety problem of leakage of personal information, although having appealed that government reinforces working out logistic industry in stringent prison
Pipe mode, while also both parties are being improved to the protective awareness of personal information, but since personal information is directly displayed at fastly
The problem of mode passed on document does not change, therefore personal information is revealed by express delivery document is also just had no idea fundamentally
It is resolved.
Summary of the invention
In view of the above-mentioned problems, the invention discloses a kind of packaging system with information hidden function, which can change
Become personal information and be directly displayed at the mode on express delivery document, and then personal information is made to pass through the problem of express delivery document is revealed from root
It is resolved on this.
The object of the present invention is achieved like this:
Based on scratch layers outside the information coding structure of circumferential arrangement striped array, including coding internal layer and ink, the ink
Outer scratch layers are attached on coding internal layer, and the surface for encoding internal layer is provided with the first disk, the second disk and third disk；
First disk includes fringe period of the n central angle at arithmetic progression, each fringe period in circumferencial direction
Interior fringe gray level is monotonically changed, and central angle corresponding to the striped in identical fringe period is equal, has in i-th of fringe period
Pi fan-shaped striped；
Second disk includes pi fringe period in circumferencial direction, and the fringe gray level dullness in each fringe period becomes
Change, central angle corresponding to the striped in identical fringe period is equal, central angle corresponding to j-th of fringe period and the first circle
Central angle corresponding to j-th of striped is equal in disk, there is qi fan-shaped striped in j-th of fringe period；
The third disk includes 1 start line and the n position line, 1 start line and n position in circumferencial direction
Line is respectively positioned on radial location, and the gray scale of start line and the position line is obviously different from the other parts of third disk, and start line is corresponding
The intersection in corresponding maximum central angle gray scale period and corresponding minimum central angle gray scale period, every position line are corresponding in first disk
A fringe period in first disk.
A kind of letter based on circumferential arrangement striped array of the above-mentioned information coding structure based on circumferential arrangement striped array
Cease coding/decoding method, comprising the following steps:
Step a, the outer scratch layers of ink are scraped off, expose coding internal layer；
Step b, using imaging sensor, the first disk, the second disk and third disk are imaged respectively；
Step c, using image processing techniques, using the first circle disk center as the center of circle, to be no more than appointing for the first disc radius
Meaning length is radius, obtains the corresponding relationship f1 (l1, α 1) of gray scale and angle on circumference, using the second circle disk center as the center of circle, with
Random length no more than the second disc radius is radius, obtains the corresponding relationship f2 (l2, α 2) of gray scale and angle on circumference, with
Third circle disk center is the center of circle, using the random length for being no more than third disc radius as radius, obtains gray scale and angle on circumference
Corresponding relationship f3 (d3, α 3)；
Step d, it differentiates to f1 (d1, α 1), is stripe order recognition angle under the angle that derivative absolute value is greater than threshold value；
In stripe order recognition position, derivative is that gray scale becomes smaller less than 0, and it is that gray scale becomes larger that derivative, which is greater than 0,；According to grey scale change angle
Become larger the changing rule to become smaller with gray scale, determines that striped is with the changing rule of angle in the first disk；
Step e, it differentiates to f2 (d2, α 2), is stripe order recognition angle under the angle that derivative absolute value is greater than threshold value；
In stripe order recognition position, derivative is that gray scale becomes smaller less than 0, and it is that gray scale becomes larger that derivative, which is greater than 0,；According to grey scale change angle
Become larger the changing rule to become smaller with gray scale, determines that striped is with the changing rule of angle in the second disk；
Step f, it differentiates to f3 (d3, α 3), is stripe order recognition angle under the angle that derivative absolute value is greater than threshold value；
In stripe order recognition position, derivative is that gray scale becomes smaller less than 0, and it is that gray scale becomes larger that derivative, which is greater than 0,；According to grey scale change angle
Become larger the changing rule to become smaller with gray scale, determines that start line and the position line are with the changing rule of angle in third disk；
Step d, step e execution synchronous with step f or in any order successively execution；
Step g, it finds in the first disk, corresponding maximum center of circle angle bead line period and corresponding minimum center of circle angle bead line period
The position is defined as initial position by intersection, plans that striped is with the changing rule f1 (l1, β) of angle in the first disk again；
Step h, it finds in the second disk, corresponding maximum center of circle angle bead line period and corresponding minimum center of circle angle bead line period
The position is defined as initial position by intersection, plans that striped is with the changing rule f2 (l2, β) of angle in the second disk again；
Step i, the start line in third disk is found, start line position is defined as initial position, planning again
In first disk the position line with angle changing rule f3 (l3, β)；
Step g, step h execution synchronous with step i or in any order successively execution；
Step j, based on f1 (l1, β), f2 (l2, β) and the equal principle of f3 (l3, β) angle, item in the first disk is determined
In line, the second disk in striped and third disk the position line corresponding relationship；
Step k, according to the corresponding relationship of the position line in striped in striped in the first disk, the second disk and third disk,
Identify hiding information.
The above-mentioned information decoding method based on circumferential arrangement striped array, the step k the following steps are included:
Step k1, striped in the first disk is encoded, the coding includes period code and gray level code；
Step k2, striped in the second disk is encoded, the coding includes large period code, minor cycle code and small gray scale
Code；
Step k3, the position line in third disk is encoded, the coding includes position code；
Step k1, step k2 execution synchronous with step k3 or in any order successively execution；
The position code, period code are consistent with large period code, and gray level code is consistent with minor cycle code；
Step k4, consistent with large period code based on position code, period code, gray level code and the minor cycle consistent principle of code will
First disk, the second disk and third disk carry out integration coding, obtain period code, gray level code and small gray level code；
Step k5, it is based on period code, gray level code and small gray level code, finds the information in information table.
The utility model has the advantages that
The first, compared with express delivery document, all personal information are all hidden in three disks by the present invention, and people can not be straight
It sees and obtains information, therefore have the function of hiding personal information.
The second, information coding structure of the present invention includes coding internal layer and the outer scratch layers of ink, and the outer scratch layers of the ink are attached to volume
On code internal layer, the surface for encoding internal layer is provided with the first disk, the second disk and third disk；Carry the disk of personal information
It is hidden in coding internal layer, it is hereby ensured that information securities.
Third needs to scrape off scratch layers outside ink due to identification information, exposes coding internal layer, therefore can be by scraping outside ink
Whether breakage is to determine whether there is information leakage for layer.
4th, after identification information, personal information is still hidden in three disks, without carrying out at damage to packaging
Reason.
5th, in structure of the invention, fringe period and each period intra-striate institute can be changed according to actual needs
Corresponding central angle increases flexibility when practical application.
6th, it in structure of the invention, due to repainting step curve according to striped relative luminance, and is encoded,
Therefore accurate processing request is not done to the gray scale of striped, equally increases flexibility when practical application.
7th, it encodes and is flexibly changed with the corresponded manner of information, scalability is strong.
To sum up, the present invention can change the mode that personal information is directly displayed on express delivery document, and then make personal information
The problem of being revealed by express delivery document is fundamentally resolved.
Meanwhile with the patent of invention " the information coding structure based on circumferential arrangement step array " declared on the same day and " be based on
The information decoding method of circumferential arrangement step array " it compares, the present invention is due to having avoided range measurement, to imaging sensor
Running track whether with plane is parallel does not do particular/special requirement where coding internal layer.
In addition, with the patent of invention " a kind of packaging system based on fringe gray level information hidden function " declared on the same day and
" a kind of hiding information recognition methods based on gray scale identification " is compared, and the present invention does not need the clearly corresponding of three disc angles and closes
System, corresponds to the position corresponding relationship of striped in two patents of invention for not needing to declare on the same day, therefore sets up and be more easier,
The setting steps of three disks are not only simplified, and reduce labour cost.
Detailed description of the invention
Fig. 1 is the information coding structural schematic diagram based on circumferential arrangement striped array before the outer scratch layers of ink scrape off.
Fig. 2 is the information coding structural schematic diagram based on circumferential arrangement striped array after the outer scratch layers of ink scrape off.
Specific embodiment
Specific embodiment one
The present embodiment is the information coding constructive embodiment based on circumferential arrangement striped array.
It is scraped outside the information coding structure based on circumferential arrangement striped array of the present embodiment, including coding internal layer and ink
Layer, the outer scratch layers of the ink are attached on coding internal layer, and the surface for encoding internal layer is provided with the first disk, the second disk and third circle
Disk；
The information coding structural schematic diagram based on circumferential arrangement striped array before the outer scratch layers of ink scrape off is as shown in Figure 1；
The outer scratch layers of ink scrape off after the information coding structural schematic diagram based on circumferential arrangement striped array as shown in Fig. 2,
In Fig. 2, low ash degree is indicated with black, indicates high gray scale with white；
First disk includes fringe period of the n central angle at arithmetic progression, each fringe period in circumferencial direction
Interior fringe gray level is monotonically changed, and central angle corresponding to the striped in identical fringe period is equal, has in i-th of fringe period
Pi fan-shaped striped；
Second disk includes pi fringe period in circumferencial direction, and the fringe gray level dullness in each fringe period becomes
Change, central angle corresponding to the striped in identical fringe period is equal, central angle corresponding to j-th of fringe period and the first circle
Central angle corresponding to j-th of striped is equal in disk, there is qi fan-shaped striped in j-th of fringe period；
The third disk includes 1 start line and the n position line, 1 start line and n position in circumferencial direction
Line is respectively positioned on radial location, and the gray scale of start line and the position line is obviously different from the other parts of third disk, and start line is corresponding
The intersection in corresponding maximum central angle gray scale period and corresponding minimum central angle gray scale period, every position line are corresponding in first disk
A fringe period in first disk.
Specific embodiment two
The present embodiment is the information decoding method embodiment based on circumferential arrangement striped array.
The information decoding method based on circumferential arrangement striped array of the present embodiment, based on circle described in the specific embodiment one
It is realized in the information coding structure of week arrangement striped array, method includes the following steps:
Step a, the outer scratch layers of ink are scraped off, expose coding internal layer；
Step b, using imaging sensor, the first disk, the second disk and third disk are imaged respectively；
Step c, using image processing techniques, using the first circle disk center as the center of circle, to be no more than appointing for the first disc radius
Meaning length is radius, obtains the corresponding relationship f1 (l1, α 1) of gray scale and angle on circumference, using the second circle disk center as the center of circle, with
Random length no more than the second disc radius is radius, obtains the corresponding relationship f2 (l2, α 2) of gray scale and angle on circumference, with
Third circle disk center is the center of circle, using the random length for being no more than third disc radius as radius, obtains gray scale and angle on circumference
Corresponding relationship f3 (d3, α 3)；
Step d, it differentiates to f1 (d1, α 1), is stripe order recognition angle under the angle that derivative absolute value is greater than threshold value；
In stripe order recognition position, derivative is that gray scale becomes smaller less than 0, and it is that gray scale becomes larger that derivative, which is greater than 0,；According to grey scale change angle
Become larger the changing rule to become smaller with gray scale, determines that striped is with the changing rule of angle in the first disk；
Step e, it differentiates to f2 (d2, α 2), is stripe order recognition angle under the angle that derivative absolute value is greater than threshold value；
In stripe order recognition position, derivative is that gray scale becomes smaller less than 0, and it is that gray scale becomes larger that derivative, which is greater than 0,；According to grey scale change angle
Become larger the changing rule to become smaller with gray scale, determines that striped is with the changing rule of angle in the second disk；
Step f, it differentiates to f3 (d3, α 3), is stripe order recognition angle under the angle that derivative absolute value is greater than threshold value；
In stripe order recognition position, derivative is that gray scale becomes smaller less than 0, and it is that gray scale becomes larger that derivative, which is greater than 0,；According to grey scale change angle
Become larger the changing rule to become smaller with gray scale, determines that start line and the position line are with the changing rule of angle in third disk；
Step d, step e execution synchronous with step f or in any order successively execution；
Step g, it finds in the first disk, corresponding maximum center of circle angle bead line period and corresponding minimum center of circle angle bead line period
The position is defined as initial position by intersection, plans that striped is with the changing rule f1 (l1, β) of angle in the first disk again；
Step h, it finds in the second disk, corresponding maximum center of circle angle bead line period and corresponding minimum center of circle angle bead line period
The position is defined as initial position by intersection, plans that striped is with the changing rule f2 (l2, β) of angle in the second disk again；
Step i, the start line in third disk is found, start line position is defined as initial position, planning again
In third disk the position line with angle changing rule f3 (l3, β)；
Step g, step h execution synchronous with step i or in any order successively execution；
Step j, based on f1 (l1, β), f2 (l2, β) and the equal principle of f3 (l3, β) angle, item in the first disk is determined
In line, the second disk in striped and third disk the position line corresponding relationship；
Step k, according to the corresponding relationship of the position line in striped in striped in the first disk, the second disk and third disk,
Identify hiding information.
Specific embodiment three
The present embodiment is the information decoding method embodiment based on circumferential arrangement striped array.
The information decoding method based on circumferential arrangement striped array of the present embodiment, on the basis of specific embodiment two,
Further limit step k the following steps are included:
Step k1, striped in the first disk is encoded, the coding includes period code and gray level code；
Step k2, striped in the second disk is encoded, the coding includes large period code, minor cycle code and small gray scale
Code；
Step k3, the position line in third disk is encoded, the coding includes position code；
Step k1, step k2 execution synchronous with step k3 or in any order successively execution；
The position code, period code are consistent with large period code, and gray level code is consistent with minor cycle code；
Step k4, consistent with large period code based on position code, period code, gray level code and the minor cycle consistent principle of code will
First disk, the second disk and third disk carry out integration coding, obtain period code, gray level code and small gray level code；
Step k5, it is based on period code, gray level code and small gray level code, finds the information in information table.
Specific embodiment four
The present embodiment is the information decoding method embodiment based on circumferential arrangement striped array.
The information decoding method based on circumferential arrangement striped array of the present embodiment, with the first disk, the second disk in Fig. 2
For third disk, the specific steps of this method are illustrated, comprising the following steps:
Step a, the outer scratch layers of ink are scraped off, expose coding internal layer；
Step b, using imaging sensor, the first disk, the second disk and third disk are imaged respectively；
Step c, using image processing techniques, using the first circle disk center as the center of circle, to be no more than appointing for the first disc radius
Meaning length is radius, obtains the corresponding relationship f1 (l1, α 1) of gray scale and angle on circumference, using the second circle disk center as the center of circle, with
Random length no more than the second disc radius is radius, obtains the corresponding relationship f2 (l2, α 2) of gray scale and angle on circumference, with
Third circle disk center is the center of circle, using the random length for being no more than third disc radius as radius, obtains gray scale and angle on circumference
Corresponding relationship f3 (d3, α 3)；
For the first disk, the result detected is as shown in the table:
| Angle | Brightness of image |
| 0~60 | It is bright |
| 60~120 | Secretly |
| 120~240 | It is bright |
| 240~360 | Secretly |
For the second disk, the result detected is as shown in the table:
| Angle | Brightness of image |
| 0~30 | It is bright |
| 30~60 | Secretly |
| 60~90 | It is bright |
| 90~120 | Secretly |
| 120~180 | It is bright |
| 180~240 | Secretly |
| 240~300 | It is bright |
| 300~360 | Secretly |
For third disk, the result detected is as shown in the table:
| Angle | Brightness of image |
| 0 | Secretly |
| 15 | Secretly |
| 150 | Secretly |
| It is other | It is bright |
Step d, it differentiates to f1 (d1, α 1), is stripe order recognition angle under the angle that derivative absolute value is greater than threshold value；
In stripe order recognition position, derivative is that gray scale becomes smaller less than 0, and it is that gray scale becomes larger that derivative, which is greater than 0,；According to grey scale change angle
Become larger the changing rule to become smaller with gray scale, determines that striped is with the changing rule of angle in the first disk；
Step e, it differentiates to f2 (d2, α 2), is stripe order recognition angle under the angle that derivative absolute value is greater than threshold value；
In stripe order recognition position, derivative is that gray scale becomes smaller less than 0, and it is that gray scale becomes larger that derivative, which is greater than 0,；According to grey scale change angle
Become larger the changing rule to become smaller with gray scale, determines that striped is with the changing rule of angle in the second disk；
Step f, it differentiates to f3 (d3, α 3), is stripe order recognition angle under the angle that derivative absolute value is greater than threshold value；
In stripe order recognition position, derivative is that gray scale becomes smaller less than 0, and it is that gray scale becomes larger that derivative, which is greater than 0,；According to grey scale change angle
Become larger the changing rule to become smaller with gray scale, determines that start line and the position line are with the changing rule of angle in third disk；
Step d, the fringe gray level that step e and step f are obtained is as shown in the table with the changing rule of angle:
For the first disk, the result detected is as shown in the table:
| Angle | Gray scale height |
| 0~60 | It is low |
| 60~120 | It is high |
| 120~240 | It is low |
| 240~360 | It is high |
For the second disk, the result detected is as shown in the table:
| Angle | Gray scale height |
| 0~30 | It is low |
| 30~60 | It is high |
| 60~90 | It is low |
| 90~120 | It is high |
| 120~180 | It is low |
| 180~240 | It is high |
| 240~300 | It is low |
| 300~360 | It is high |
For third disk, the result detected is as shown in the table:
| Angle | Gray scale height |
| 0 | It is low |
| 15 | It is low |
| 150 | It is low |
| It is other | It is high |
Step d, step e execution synchronous with step f or in any order successively execution；
Step g, it finds in the first disk, corresponding maximum center of circle angle bead line period and corresponding minimum center of circle angle bead line period
The position is defined as initial position by intersection, plans that striped is with the changing rule f1 (l1, β) of angle in the first disk again；
Step h, it finds in the second disk, corresponding maximum center of circle angle bead line period and corresponding minimum center of circle angle bead line period
The position is defined as initial position by intersection, plans that striped is with the changing rule f2 (l2, β) of angle in the second disk again；
Step i, the start line in third disk is found, start line position is defined as initial position, planning again
In third disk the position line with angle changing rule f3 (l3, β)；
In the present embodiment, since the first disk is only there are two the period, corresponding maximum center of circle angle bead line period and right
Answering the intersection in minimum center of circle angle bead line period has two, and according to rotation counterclockwise, first intersection is the intersection to be looked for, due to
The intersection of first disk, the second disk and third disk is all 0 degree of position, therefore the result after planning and the preceding phase of planning again
Together；
Step g, step h execution synchronous with step i or in any order successively execution；
Step j, based on f1 (l1, β), f2 (l2, β) and the equal principle of f3 (l3, β) angle, item in the first disk is determined
In line, the second disk in striped and third disk the position line corresponding relationship；
Obtained corresponding relationship is, low in low and the second disk in corresponding first disk of first position line, second
It is low in low and the second disk in corresponding first disk of a position line；
Step k, according to the corresponding relationship of the position line in striped in striped in the first disk, the second disk and third disk,
Identify hiding information.
First position line is province mark, striped in the first disk, in the second disk striped and province corresponding relationship
It is as shown in the table:
| First disk | Second disk | Province |
| It is low | It is low | A is saved |
| It is low | It is high | B is saved |
| It is high | It is low | C is saved |
| It is high | It is high | D is saved |
According to the corresponding relationship in table, it is able to know that in low and the second disk in corresponding first disk of first position line
It is low, it is corresponding be A save；
Second position line is urban sign, under the premise of determining corresponding to first position line is that A is saved, the first circle
Step in disk, step and the corresponding relationship in city are as shown in the table in the second disk:
| First disk | Second disk | City |
| It is low | It is low | The city A |
| It is low | It is high | The city B |
| It is high | It is low | The city C |
| It is high | It is high | The city D |
According to the corresponding relationship in table, it is able to know that in low and the second disk in corresponding first disk of first position line
It is low, corresponding is the city A；
And so on, it can determine any information.
Even name information, the pronunciation of name can also be determined by initial consonant, simple or compound vowel of a Chinese syllable, tone, further according in the pronunciation
In ranking determination be which word.
It should also be noted that, start line and the position line in third disk, it can be by the way that different linear or/and lines be arranged
Width distinguishes.
Claims (1)
1. a kind of coding endothecium structure, which is characterized in that surface is provided with the first disk, the second disk and third disk, described
First disk, the second disk and third disk are hidden in coding internal layer, it is ensured that information security；
First disk includes fringe period of the n central angle at arithmetic progression in circumferencial direction, in each fringe period
Fringe gray level is monotonically changed, and central angle corresponding to the striped in identical fringe period is equal, there is pi in i-th of fringe period
Fan-shaped striped；
Second disk includes pi fringe period in circumferencial direction, and the fringe gray level in each fringe period is monotonically changed,
Central angle corresponding to striped in identical fringe period is equal, central angle corresponding to j-th of fringe period and the first disk
In central angle corresponding to j-th of striped it is equal, have qi fan-shaped striped in j-th of fringe period；
The third disk includes 1 start line and the n position line in circumferencial direction, and 1 start line and the n position line are equal
Positioned at radial location, the gray scale of start line and the position line is obviously different from the other parts of third disk, start line corresponding first
The intersection in corresponding maximum central angle gray scale period and corresponding minimum central angle gray scale period in disk, every position line corresponding first
A fringe period in disk；
Change central angle corresponding to fringe period and each period intra-striate according to actual needs, all by all personal information
It is hidden in three disks, determines striped in the first disk, the corresponding of the position line is closed in striped and third disk in the second disk
System identifies according to the corresponding relationship of the position line in striped in striped in the first disk, the second disk and third disk and hides letter
Breath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910714508.0A CN110245535B (en) | 2016-11-19 | 2016-11-19 | Coding inner layer structure |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN110245535B (en) | 2022-06-28 |
| CN106557799B (en) | 2019-07-05 |
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