CN110245535B

CN110245535B - Coding inner layer structure

Info

Publication number: CN110245535B
Application number: CN201910714508.0A
Authority: CN
Inventors: 赵烟桥; 于博洋
Original assignee: Harbin University of Science and Technology
Current assignee: Harbin University of Science and Technology
Priority date: 2016-11-19
Filing date: 2016-11-19
Publication date: 2022-06-28
Anticipated expiration: 2036-11-19
Also published as: CN110245535A; CN106557799A; CN106557799B

Abstract

The invention relates to a coding inner layer structure, which belongs to the technical field of packaging transportation, encryption and decryption and information security; the surface of the coding inner layer structure is provided with a first disc, a second disc and a third disc; the first disc comprises n fringe periods with central angles forming an arithmetic progression in the circumferential direction, and the fringe gray level in each fringe period changes monotonously; the second disc comprises pi stripe periods in the circumferential direction, and the gray scale of the stripe in each stripe period changes monotonously; the third disc comprises 1 starting line and n position lines in the circumferential direction; the method and the system can change the mode that the personal information is directly displayed on the express receipt, and further fundamentally solve the problem that the personal information is leaked through the express receipt.

Description

Coding inner layer structure

The application is a divisional application of the invention patent application 'information coding structure based on circumferentially arranged stripe arrays'.

Application date of the original case: 2016-11-19.

Original application No.: 2016110319690.

the name of the original invention is: the information coding structure is based on a circumferential arrangement stripe array.

Technical Field

The invention relates to an inner coding layer structure, which belongs to the technical field of packaging transportation, encryption and decryption and information security.

Technical Field

The online shopping is an indispensable consumption mode in the life of people, and the express bill also becomes an important certificate for the transaction between the buyer and the seller. At present, personal information of both buyers and sellers can be directly displayed on the express bills and distributed according to the information on the express bills, so that the personal information of both buyers and sellers can be completely exposed in each distribution link, and the personal information is easily lost. According to investigation, over 70% of personal information is leaked through express documents, which brings much trouble to daily life of people and even causes serious economic loss.

In the face of the safety problem of personal information leakage, although the government has been called to strengthen the strict supervision mode made for the logistics industry and improve the protection awareness of buyers and sellers on the personal information, the mode that the personal information is directly displayed on the express documents is not changed, so that the problem that the personal information is leaked through the express documents cannot be fundamentally solved.

Disclosure of Invention

Aiming at the problems, the invention discloses a packaging system with an information hiding function, which can change the mode that personal information is directly displayed on an express receipt, so that the problem that the personal information is leaked through the express receipt is fundamentally solved.

The purpose of the invention is realized as follows:

the information coding structure based on the circumferentially arranged stripe array comprises a coding inner layer and an ink outer scraping layer, wherein the ink outer scraping layer is attached to the coding inner layer, and a first disc, a second disc and a third disc are arranged on the surface of the coding inner layer;

the first disc comprises n stripe periods with central angles in an equal difference array in the circumferential direction, the gray scale of the stripes in each stripe period changes monotonously, the central angles corresponding to the stripes in the same stripe period are equal, and pi fan-shaped stripes are arranged in the ith stripe period;

the second disc comprises pi stripe periods in the circumferential direction, the gray scale of the stripe in each stripe period changes monotonously, the central angles corresponding to the stripes in the same stripe period are equal, the central angle corresponding to the jth stripe period is equal to the central angle corresponding to the jth stripe in the first disc, and qi fan-shaped stripes are arranged in the jth stripe period;

the third disc comprises 1 starting line and n position lines in the circumferential direction, the 1 starting line and the n position lines are located at radius positions, the gray levels of the starting line and the position lines are obviously different from other parts of the third disc, the starting line corresponds to an intersection line of a maximum central angle gray level period and a minimum central angle gray level period corresponding to the first disc, and each position line corresponds to a stripe period in the first disc.

An information decoding method based on the circumferentially arranged stripe array of the information coding structure based on the circumferentially arranged stripe array comprises the following steps:

a, scraping an ink outer scraping layer to expose a coding inner layer;

b, respectively imaging the first disc, the second disc and the third disc by using an image sensor;

step c, by using an image processing technology, taking the circle center of the first disc as the circle center, taking any length not exceeding the radius of the first disc as the radius, obtaining the corresponding relation f1(l1, alpha 1) of the gray scale and the angle on the circumference, taking the circle center of the second disc as the circle center, taking any length not exceeding the radius of the second disc as the radius, obtaining the corresponding relation f2(l2, alpha 2) of the gray scale and the angle on the circumference, taking the circle center of the third disc as the circle center, taking any length not exceeding the radius of the third disc as the radius, obtaining the corresponding relation f3(d3, alpha 3) of the gray scale and the angle on the circumference;

d, obtaining a derivative of the f1(d1, alpha 1), and obtaining a stripe change angle under the condition that the absolute value of the derivative is larger than a threshold value; in the fringe change position, the derivative smaller than 0 is gray scale smaller, and the derivative larger than 0 is gray scale larger; determining the change rule of the stripes in the first disc along with the angle according to the change rule of the gray change angle and the gray change increasing and decreasing;

E, solving a derivative of the f2(d2, alpha 2), and taking a fringe change angle under the condition that the absolute value of the derivative is greater than a threshold value; in the stripe change position, the gray scale becomes smaller when the derivative is less than 0, and the gray scale becomes larger when the derivative is greater than 0; determining the change rule of the stripes in the second disc along with the angle according to the change rule of the gray change angle and the gray change increasing and decreasing;

step f, obtaining a derivative of f3(d3, alpha 3), and obtaining a stripe change angle under the condition that the absolute value of the derivative is larger than a threshold value; in the fringe change position, the derivative smaller than 0 is gray scale smaller, and the derivative larger than 0 is gray scale larger; determining the change rule of the start line and the position line along with the angle in the third disc according to the change rule of the gray change angle and the gray change increasing and decreasing;

step d, step e and step f are executed synchronously or sequentially according to any sequence;

step g, finding an intersection line of the fringe period corresponding to the maximum central angle and the fringe period corresponding to the minimum central angle in the first disc, defining the position as an initial position, and re-planning a variation rule f1(l1, beta) of the fringes along with the angle in the first disc;

step h, finding out an intersection line of the fringe period corresponding to the maximum central angle and the fringe period corresponding to the minimum central angle in the second disc, defining the position as an initial position, and replanning a rule f2(l2, beta) of the variation of the fringes along with the angle in the second disc;

Step i, finding a start line in the third disc, defining the position of the start line as a start position, and replanning a change rule f3(l3, beta) of the position line in the first disc along with the angle;

step g, step h and step i are executed synchronously or successively according to any sequence;

step j, determining the corresponding relation of the stripes in the first disc, the stripes in the second disc and the position lines in the third disc based on the principle that the angles of f1(l1, beta), f2(l2, beta) and f3(l3, beta) are equal;

and k, identifying the hidden information according to the corresponding relation among the stripes in the first disc, the stripes in the second disc and the position lines in the third disc.

In the information decoding method based on the circumferentially arranged stripe array, step k includes the following steps:

step k1, encoding the stripes in the first disc, wherein the encoding comprises a period code and a gray code;

step k2, coding the stripes in the second disc, wherein the coding comprises a large period code, a small period code and a small gray code;

step k3, coding a position line in the third disc, wherein the coding comprises a position code;

step k1, step k2 and step k3 are executed synchronously or sequentially according to any sequence;

the position code, the period code and the large period code are consistent, and the gray code and the small period code are consistent;

K4, based on the principle that the position codes, the periodic codes and the large periodic codes are consistent, and the gray codes and the small periodic codes are consistent, the first disc, the second disc and the third disc are subjected to integrated coding to obtain the periodic codes, the gray codes and the small gray codes;

and step k5, finding the information in the information table based on the period code, the gray code and the small gray code.

Has the beneficial effects that:

first, compared with express documents, the invention hides all personal information in three discs, and people cannot visually acquire the information, so that the invention has the function of hiding the personal information.

The information coding structure comprises a coding inner layer and an ink outer scraping layer, wherein the ink outer scraping layer is attached to the coding inner layer, and a first disc, a second disc and a third disc are arranged on the surface of the coding inner layer; i.e. the disc carrying the personal information is hidden in the coded inner layer, thus ensuring the information security.

Thirdly, since the ink outer scratch layer needs to be scratched off to expose the code inner layer, whether information leakage exists can be judged through whether the ink outer scratch layer is damaged.

Fourthly, after the information is identified, the personal information is still hidden in the three discs, and the package does not need to be damaged.

Fifthly, in the structure of the invention, the period of the stripes and the central angle corresponding to the stripes in each period can be changed according to actual needs, so that the flexibility in actual application is improved.

Sixth, in the structure of the present invention, since the step curve is redrawn according to the relative brightness of the stripes and is encoded, the gray scale of the stripes is not required to be precisely processed, and the flexibility in practical application is also increased.

Seventh, the corresponding mode of the coding and the information is flexibly changed, and the expansibility is strong.

In conclusion, the method and the system can change the mode that the personal information is directly displayed on the express receipt, and further fundamentally solve the problem that the personal information is leaked through the express receipt.

Meanwhile, compared with the invention patent of information coding structure based on the circumferential arrangement step array and the information decoding method based on the circumferential arrangement step array, which are filed on the same day, the invention avoids distance measurement, so that no special requirement is made on whether the running track of the image sensor is parallel to the plane where the coding inner layer is located.

In addition, compared with the packing system based on the stripe gray scale information hiding function and the hidden information identification method based on the gray scale identification, which are reported on the same day, the packing system based on the stripe gray scale information hiding function does not need the definite corresponding relation of angles of three disks, and does not need the position corresponding relation of the stripes in the two patents reported on the same day correspondingly, so that the packing system is easier to set, the setting steps of the three disks are simplified, and the labor cost is reduced.

Drawings

FIG. 1 is a schematic diagram of an information encoding structure based on a circumferentially arranged stripe array before an ink outer scratch layer is scraped.

FIG. 2 is a schematic diagram of an information encoding structure based on a circumferentially arranged stripe array after an ink outer scratch layer is scraped.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

Detailed description of the preferred embodiment

The embodiment is an information coding structure embodiment based on a circumferentially arranged stripe array.

the schematic diagram of the information coding structure based on the circumferentially arranged stripe array before the ink outer scratch layer is scraped is shown in FIG. 1;

the schematic diagram of the information coding structure based on the circumferentially arranged stripe array after the ink outer scratch layer is scraped is shown in fig. 2, low gray is represented by black, and high gray is represented by white;

Detailed description of the invention

The embodiment is an embodiment of an information decoding method based on a circumferentially arranged stripe array.

The information decoding method based on the circumferentially arranged fringe arrays of the present embodiment is implemented on the information coding structure based on the circumferentially arranged fringe arrays of the first specific embodiment, and the method includes the following steps:

step a, scraping an ink outer scraping layer to expose a coding inner layer;

step e, a derivative is obtained for f2(d2, alpha 2), and the angle is a stripe change angle under the condition that the absolute value of the derivative is larger than a threshold value; in the fringe change position, the derivative smaller than 0 is gray scale smaller, and the derivative larger than 0 is gray scale larger; determining the change rule of the stripes in the second disc along with the angle according to the change rule of the gray change angle and the gray change increasing and decreasing;

Step f, a derivative is obtained for f3(d3, alpha 3), and a fringe change angle is obtained when the absolute value of the derivative is larger than a threshold value; in the stripe change position, the gray scale becomes smaller when the derivative is less than 0, and the gray scale becomes larger when the derivative is greater than 0; determining the change rule of the start line and the position line along with the angle in the third disc according to the change rule of the gray change angle and the gray change increasing and decreasing;

step h, finding out an intersection line corresponding to the maximum central angle fringe period and the minimum central angle fringe period in the second disc, defining the position as an initial position, and re-planning the change rule f2(l2, beta) of the fringes along with the angle in the second disc;

step i, finding a start line in the third disc, defining the position of the start line as a start position, and re-planning a change rule f3(l3, beta) of the position line in the third disc along with the angle;

step g, step h and step i are executed synchronously or sequentially according to any sequence;

Detailed description of the invention

In the information decoding method based on the circumferentially arranged fringe array of the present embodiment, on the basis of the second specific embodiment, the further limiting step k includes the following steps:

step k1, encoding stripes in the first disc, wherein the encoding comprises a period code and a gray code;

step k2, encoding stripes in the second disc, wherein the encoding comprises a large period code, a small period code and a small gray code;

step k3, encoding the position line in the third disc, wherein the encoding comprises a position code;

step k4, based on the principle that the position code, the period code and the large period code are consistent, and the gray code and the small period code are consistent, the first disc, the second disc and the third disc are integrated and coded to obtain the period code, the gray code and the small gray code;

Detailed description of the invention

The information decoding method based on the circumferentially arranged stripe array of the present embodiment takes the first disk, the second disk and the third disk in fig. 2 as an example to explain specific steps of the method, and includes the following steps:

a, scraping an ink outer scraping layer to expose a coding inner layer;

for the first disc, the results detected are shown in the following table:

Angle of rotation	Image brightness
		0～60	Bright and bright
60～120	Darkness
		120～240	Bright Light (LIGHT)
240～360	Darkness

For the second disc, the results were detected as shown in the following table:

angle of rotation	Brightness of image
		0～30	Bright Light (LIGHT)
30～60	Darkness
		60～90	Bright Light (LIGHT)
90～120	Darkness
		120～180	Bright Light (LIGHT)
180～240	Darkness
		240～300	Bright Light (LIGHT)
300～360	Darkness

For the third disc, the results were detected as shown in the following table:

angle of rotation	Brightness of image
		0	Darkness
15	Darkness
		150	Darkness
Others	Bright Light (LIGHT)

The change rule of the stripe gray scale obtained in the steps d, e and f along with the angle is shown in the following table:

for the first disc, the results detected are shown in the following table:

angle of rotation	Gray scale of high and low
		0～60	Is low in
60～120	Height of
		120～240	Is low in
240～360	Height of

For the second disc, the results were detected as shown in the following table:

angle of rotation	Gray scale of high and low
		0～30	Is low in
30～60	Height of
		60～90	Is low in
90～120	Height of
		120～180	Is low in
180～240	Height of
		240～300	Is low in
300～360	Height of

For the third disc, the results were detected as shown in the following table:

angle of rotation	Gray scale of high and low
		0	Is low in
15	Is low in
		150	Is low in
Others	Height of

In this embodiment, since the first disk has only two periods, there are two intersecting lines corresponding to the maximum central angle fringe period and the minimum central angle fringe period, and the first intersecting line is the intersecting line to be found according to the counterclockwise rotation, and since the intersecting lines of the first disk, the second disk and the third disk are all at the 0-degree position, the result after the replanning is the same as that before the planning;

the obtained correspondence is that the first position line corresponds to a low in the first puck and a low in the second puck, and the second position line corresponds to a low in the first puck and a low in the second puck;

and k, identifying hidden information according to the corresponding relation among the stripes in the first disc, the stripes in the second disc and the position lines in the third disc.

The first position line is a province mark, and the corresponding relation between the stripes in the first disk and the stripes in the second disk and the provinces is shown in the following table:

first disc	Second disc	Province of labor
			Is low in	Is low in	A province
Is low in	Height of	B province
			Height of	Is low in	C province
Height of	Height of	D province

According to the corresponding relation in the table, the first position line is corresponding to the low in the first disc and the low in the second disc, and the first position line corresponds to province A;

the second position line is a city mark, and on the premise that the first position line corresponds to province A, the corresponding relation among the steps in the first disc, the steps in the second disc and the city is shown in the following table:

first disc	Second disc	City
			Is low in	Is low in	A city
Is low in	Height of	B city
			Height of	Is low in	C city
Height of	Height of	D city

According to the corresponding relation in the table, the first position line is corresponding to the low in the first disk and the low in the second disk, and the first position line corresponds to city A;

by analogy, any information can be determined.

Even if the name information is the name information, the pronunciation of the name can be determined by the initial consonant, the vowel and the tone, and then the character is determined according to the ranking in the pronunciation.

It should be noted that the start line and the position line in the third disk can be distinguished by setting different line shapes and/or line widths.

Claims

1. A coded inner layer structure is characterized in that a first disc, a second disc and a third disc are arranged on the surface of the coded inner layer, and the first disc, the second disc and the third disc are hidden in the coded inner layer, so that the information safety is ensured;

the third disc comprises 1 starting line and n position lines in the circumferential direction, the 1 starting line and the n position lines are located at radius positions, the gray levels of the starting line and the position lines are obviously different from other parts of the third disc, the starting line corresponds to an intersection line of a maximum central angle gray level period and a minimum central angle gray level period in the first disc, and each position line corresponds to a stripe period in the first disc;

changing the period of the stripes and the central angle corresponding to the stripes in each period according to actual needs, hiding all personal information in the three disks, determining the corresponding relation among the stripes in the first disk, the stripes in the second disk and the position lines in the third disk, and identifying the hidden information according to the corresponding relation among the stripes in the first disk, the stripes in the second disk and the position lines in the third disk.