CN114996766A - Image sharing method and system based on two-dimension code social network and storage medium - Google Patents

Image sharing method and system based on two-dimension code social network and storage medium Download PDF

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CN114996766A
CN114996766A CN202210917056.8A CN202210917056A CN114996766A CN 114996766 A CN114996766 A CN 114996766A CN 202210917056 A CN202210917056 A CN 202210917056A CN 114996766 A CN114996766 A CN 114996766A
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温文媖
范佳聪
张玉书
方玉明
左一帆
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Jiangxi University of Finance and Economics
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Abstract

The invention provides an image sharing method, system and storage medium based on a two-dimension code social network.A face in an original image is subjected to region detection to obtain a plurality of salient regions; then, carrying out encryption processing on each detected significant area by using a secret image sharing algorithm based on a polynomial to generate a plurality of initial shares, carrying out exclusive OR operation on a visual secret sharing algorithm based on a random grid and a binary authentication image through a 4-bit least significant bit, obtaining a final share of a participant and a final share of a distributor with authentication capability through combination, then generating a QR (quick response) code by a cloud server according to a storage link of an original background image, generating a cover image of the QR code according to a compressed background image, finally authenticating the final share of the participant and the final share of the distributor, and recovering the image after the authentication is successful. The method and the device can solve the problems that privacy and usability during image sharing cannot be balanced and the calculation complexity is high in the prior art.

Description

Image sharing method and system based on two-dimension code social network and storage medium
Technical Field
The invention relates to the technical field of image processing, in particular to an image sharing method and system based on a two-dimension code social network and a storage medium.
Background
With the increasing popularity of mobile devices, various online social platforms greatly simplify the difficulty of spreading and sharing images. More and more images are transmitted over networks and stored on open source software. For example, more than 10 million new photos are uploaded to Facebook, WeChat, etc. daily. People can share information online in real time, exchange information with each other, and can transmit a large amount of additional information through shared images. Thus, online social networks have become an important part of people's daily life. The sharing of social photos depends on the subjective thoughts of the photo owner (called the publisher), who has their own preferences for the privacy part. Other participants were not informed or given their consent, but had their private information exposed, prior to the release of the photograph containing the information about the other participants.
To ensure privacy, the privacy policy of the image sharing social network is mainly focused on how the service provider explores the participants' information, and by which methods the participants can control the scope of information sharing. Most systems allow participants to manually specify privacy settings. For example: whether the image is public, private, or visible to a designated family or friend. However, since social networking photos are not only a publisher but also possibly some other participants, publishers do not consider privacy security of other participants when sharing photos. If the sharing of such photos is completely controlled by the publisher, the privacy of other related participants may be compromised. This privacy problem can be further explained by the following example. Suppose user a and user B take a photo together, then user B shares the photo on his social platform without telling user a, and user B privacy is set to be visible to all. Sharing photos would violate the privacy of user a if user a were not willing to see the photos by others.
In the above example, this photo is actually common to both user A and user B. When user B shares in the photo, he should either have recourse to user a's consent or be decided by user a himself whether to share. Generally, when a participant shares a photo with others, all relevant participants in the photo will be at risk of privacy disclosure. Therefore, how to avoid privacy invasion during image sharing is a technical problem to be solved by those skilled in the art.
Secret image sharing schemes, such as those based on generating keys to confront a network, may provide solutions to the problem of autonomous privacy control in social networks. The (k, n) threshold secret sharing scheme divides the shared image into n shares, called shares (or shares). According to this scheme, these shares are allocated to the respective n participants. If at least k or more shares out of the n shares are obtained, the original image can be reconstructed. Furthermore, when there are less than k shares of the n shares, no information about the shared image is available, regardless of how powerful the attacker is. However, the existing secret image sharing scheme can cause the image to lose the usability based on the content, and the privacy and the usability during image sharing cannot be balanced.
Disclosure of Invention
In view of the foregoing situation, the main object of the present invention is to provide an image sharing method based on a two-dimensional code social network, wherein the method includes the following steps:
step 1, performing region detection on a human face in an original image to obtain a plurality of salient regions;
step 2, carrying out encryption processing on each detected significant region by utilizing a secret image sharing algorithm based on a polynomial to generate a plurality of initial shares, then carrying out XOR operation on the generated initial shares by combining a visual secret sharing algorithm based on a random grid and a binary authentication image through 4-bit least significant bits to obtain initial shares after XOR operation, finally combining the initial shares after XOR operation in a preset combination mode to obtain a final share of a participant and a final share of a distributor with authentication capability, sharing the final share of the participant to the corresponding participant, and sharing the final share of the distributor to the corresponding distributor;
step 3, taking areas except all the salient areas in the original image as original background images, uploading the original background images to a cloud server, generating a QR (quick response) code by the cloud server according to a storage link of the original background images, and generating a cover image of the QR code according to the compressed background images, wherein the image quality of the compressed background images is lower than that of the original background images, and finally, the cloud server issues the generated QR code to a social network;
and 4, when the participant and the dealer scan the QR codes through the code scanning equipment, the participant uploads the final share of the participant to the social network, the dealer uploads the final share of the dealer to the social network, the final share of the participant and the final share of the dealer are authenticated, and the image is restored by using a Lagrangian interpolation method after the authentication is successful.
According to the image sharing method based on the two-dimensional code social network, which is provided by the embodiment of the invention, as the QR code has strong robustness, the QR code generated by the link of the high-quality original background image is published to the social network, so that various damaging operations of the social network on the high-quality image can be effectively avoided: in addition, the low-quality compressed background image is used as the front cover of the QR code, and the privacy and usability of the image can be met to a certain degree. In addition, the secret image sharing algorithm of the polynomial is combined with the visual secret sharing algorithm of the random grid, the autonomous control privacy sharing can be carried out according to the intention of the participants, and the image sharing method is lower in computational complexity compared with the prior art.
The image sharing method based on the two-dimensional code social network is characterized in that in the step 2, an initial threshold value of a secret image sharing algorithm based on a polynomial is (2, 2).
The image sharing method based on the two-dimensional code social network includes the following steps:
step 2.1, setting a binary authentication image
Figure 311077DEST_PATH_IMAGE001
Is of a size of
Figure 759376DEST_PATH_IMAGE002
Of 1 at
Figure 945638DEST_PATH_IMAGE003
A significant area is
Figure 872006DEST_PATH_IMAGE004
，
Figure 951957DEST_PATH_IMAGE005
，
Figure 430212DEST_PATH_IMAGE006
Represents the total number of salient regions, will
Figure 228404DEST_PATH_IMAGE004
Is divided into the size of
Figure 568249DEST_PATH_IMAGE002
The initial threshold of the polynomial-based secret image sharing algorithm is set to (2, 2) for the three RGB channels of (1), and the salient region is set to
Figure 768286DEST_PATH_IMAGE004
Pixel value of each channel in
Figure 420372DEST_PATH_IMAGE007
Repeating steps 2.2 to 2.5, wherein,
Figure 705860DEST_PATH_IMAGE008
，
Figure 708451DEST_PATH_IMAGE009
；
step 2.2, in the secret image sharing algorithm based on the polynomial, and adopting the initial share generated by the following formula:
Figure 638361DEST_PATH_IMAGE010
wherein,
Figure 599364DEST_PATH_IMAGE011
to represent
Figure 231202DEST_PATH_IMAGE004
The value of the pixel of (a) is,
Figure 37484DEST_PATH_IMAGE012
the coefficients of the function are represented by,
Figure 87480DEST_PATH_IMAGE013
it is indicated that the remainder operation is performed,
Figure 688225DEST_PATH_IMAGE014
the number of the prime numbers is represented,
Figure 948305DEST_PATH_IMAGE015
represents the key of the secret key and the secret key,
Figure 682912DEST_PATH_IMAGE016
the initial fractions generated are respectively
Figure 712048DEST_PATH_IMAGE017
And
Figure 624640DEST_PATH_IMAGE018
，
Figure 106437DEST_PATH_IMAGE019
representing an order;
step 2.3, the vision secret image sharing algorithm based on the random grid uses two temporary bits 0 and1, feeding
Figure 644735DEST_PATH_IMAGE020
By encrypting the pixel values of
Figure 262798DEST_PATH_IMAGE021
Representing, calculating
Figure 736505DEST_PATH_IMAGE022
And so on; when in use
Figure 580964DEST_PATH_IMAGE023
When it is in use, make
Figure 267160DEST_PATH_IMAGE024
If at all
Figure 398452DEST_PATH_IMAGE025
Then, then
Figure 43060DEST_PATH_IMAGE026
Wherein
Figure 374815DEST_PATH_IMAGE027
Expressed as randomly arranged pixel values, which will then be
Figure 864702DEST_PATH_IMAGE027
Is randomly assigned to
Figure 457358DEST_PATH_IMAGE028
，
Figure 397501DEST_PATH_IMAGE029
Represented as a binary authentication image
Figure 75607DEST_PATH_IMAGE020
A pixel value of (a);
step 2.4, with
Figure 510130DEST_PATH_IMAGE030
Representing a pixel
Figure 488450DEST_PATH_IMAGE031
As a result of the xor operation with the 4 least significant bits, for each pixel value in the initial share generated in step 2.2, a decision is first made
Figure 68336DEST_PATH_IMAGE032
If yes, then determining
Figure 499318DEST_PATH_IMAGE033
And
Figure 331007DEST_PATH_IMAGE034
if the judgment result is true, obtaining the initial share after the exclusive-or operation, and entering the step 2.5, otherwise, returning to the step 2.2;
step 2.5, the initial share obtained in step 2.4 after the XOR operation is calculated as
Figure 39200DEST_PATH_IMAGE007
And
Figure 930933DEST_PATH_IMAGE035
in combination with the above, wherein,
Figure 973844DEST_PATH_IMAGE036
is shown as
Figure 609225DEST_PATH_IMAGE036
A significant area, and
Figure 906345DEST_PATH_IMAGE037
finally, the final share of the participants with authentication ability obtained by the participants is self
Figure 968979DEST_PATH_IMAGE038
And other participants
Figure 108974DEST_PATH_IMAGE018
With authentication obtained by the dealerDealer Final share of capacity as all
Figure 929469DEST_PATH_IMAGE018
A combination of (a) and (b).
The image sharing method based on the two-dimensional code social network includes the following steps:
step 4.1, when the participants and the dealers scan the QR codes through the code scanning equipment, the participants upload the final shares of the participants to the social network, the dealers upload the final shares of the dealers to the social network, and the final shares of the participants or the dealers uploaded to the social network are adopted
Figure 471309DEST_PATH_IMAGE039
It is shown that,
Figure 580210DEST_PATH_IMAGE039
is of a size of
Figure 207501DEST_PATH_IMAGE002
There are two cases according to the number of participants:
first, when only one participant uploads the final share of the participant, the result of the XOR operation is computed
Figure 574897DEST_PATH_IMAGE040
Stacking the calculated result and the final share of the dealer to obtain a detection image
Figure 705664DEST_PATH_IMAGE041
Then detecting the image
Figure 375680DEST_PATH_IMAGE041
And binary authentication image
Figure 365633DEST_PATH_IMAGE042
Carrying out consistency comparison, if the consistency comparison is passed, the authentication is successful, and entering a step 4.2;
second, there are multiple participants uploading their respective final sharesCalculating the result of XOR operation corresponding to the final share of each participant
Figure 880928DEST_PATH_IMAGE040
Then, the calculation results are stacked pairwise to obtain a plurality of detection images
Figure 521993DEST_PATH_IMAGE041
Each detected image is processed
Figure 97331DEST_PATH_IMAGE041
And binary authentication image
Figure 699214DEST_PATH_IMAGE042
Consistency comparison is carried out, if the consistency comparison is passed, authentication is successful, and the step 4.2 is carried out;
and 4.2, carrying out image restoration on the authenticated final share of the participants and the authenticated final share of the dealers by adopting a Lagrange interpolation method to obtain
Figure 159145DEST_PATH_IMAGE006
Each size is
Figure 530084DEST_PATH_IMAGE043
Is/are as follows
Figure 400957DEST_PATH_IMAGE044
Wherein
Figure 224556DEST_PATH_IMAGE044
indicated as the salient region after reconstruction.
The image sharing method based on the two-dimensional code social network specifically comprises the following steps of 1:
and performing region detection on the face in the original image by adopting a face recognition algorithm to obtain a plurality of salient regions.
The image sharing method based on the two-dimensional code social network specifically comprises the following steps of 1:
the original image is divided into R, G, B three channels, and then the face recognition algorithm is adopted to detect the face region in the original image, so as to obtain a plurality of salient regions.
The invention also provides an image sharing system based on the two-dimensional code social network, wherein the system comprises:
a region detection module to:
carrying out region detection on the human face in the original image to obtain a plurality of salient regions;
an encryption processing module to:
carrying out encryption processing on each detected significant region by utilizing a secret image sharing algorithm based on a polynomial to generate a plurality of initial shares, then carrying out XOR operation on the generated initial shares by combining a visual secret sharing algorithm based on a random grid and a binary authentication image through 4-bit least significant bits to obtain initial shares after the XOR operation, finally combining the initial shares after the XOR operation in a preset combination mode to obtain a final share of participants and a final share of a distributor with authentication capability, sharing the final share of the participants to the corresponding participants, and sharing the final share of the distributor to the corresponding distributor;
a link generation module to:
taking areas except all salient areas in the original image as original background images, uploading the original background images to a cloud server, generating a QR code by the cloud server according to a storage link of the original background images, and generating a cover image of the QR code according to a compressed background image, wherein the image quality of the compressed background image is lower than that of the original background image, and finally, the cloud server issues the generated QR code to a social network;
an image restoration module to:
when the participants and the dealers scan the QR codes through the code scanning equipment, the participants upload the final shares of the participants to the social network, the dealers upload the final shares of the dealers to the social network, the final shares of the participants and the final shares of the dealers are authenticated, and the images are restored by using a Lagrange interpolation method after the authentication is successful.
The invention further provides a storage medium on which a computer program is stored, wherein the program is executed by a processor to implement the image sharing method based on the two-dimensional code social network.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a flowchart of an image sharing method based on a two-dimensional code social network according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an exemplary manner of combining shares;
FIG. 3 is a graph comparing peak signal-to-noise ratio (PSNR) for different schemes at threshold (2, 2);
fig. 4 is a schematic structural diagram of an image sharing system based on a two-dimensional code social network according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
These and other aspects of embodiments of the invention will be apparent with reference to the following description and attached drawings. In the description and drawings, particular embodiments of the invention have been disclosed in detail as being indicative of some of the ways in which the principles of the embodiments of the invention may be practiced, but it is understood that the scope of the embodiments of the invention is not limited correspondingly. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
Referring to fig. 1, an embodiment of the present invention provides an image sharing method based on a two-dimensional code social network, including steps 1 to 4:
step 1, carrying out region detection on a human face in an original image to obtain a plurality of salient regions.
The original image mainly refers to an original image in a social network, and specifically, a face recognition algorithm can be adopted to perform region detection on a face in the original image so as to obtain a plurality of salient regions.
The original image is usually a color image, for the color original image, the original image is firstly divided into R, G, B three channels, then a face recognition algorithm is adopted to carry out region detection on the face in the original image so as to obtain a plurality of salient regions (namely ROIs), each face is a salient region, each ROIS is called a secret image, and the secret image is used
Figure 488178DEST_PATH_IMAGE004
It is shown that,
Figure 448044DEST_PATH_IMAGE003
is shown as
Figure 630764DEST_PATH_IMAGE003
A region of one of the salient regions is,
Figure 334802DEST_PATH_IMAGE005
，
Figure 995590DEST_PATH_IMAGE006
representing the total number of salient regions.
And 2, encrypting each detected salient region by utilizing a secret image sharing algorithm based on a polynomial to generate a plurality of initial shares, then carrying out XOR operation on the generated initial shares by combining a visual secret sharing algorithm based on a random grid and a binary authentication image through 4-bit least significant bits to obtain initial shares after the XOR operation, finally combining the initial shares after the XOR operation in a preset combination mode to obtain a final share of a participant and a final share of a distributor with authentication capability, sharing the final share of the participant to the corresponding participant, and sharing the final share of the distributor to the corresponding distributor.
Wherein the initial threshold of the polynomial-based secret image sharing algorithm is (2, 2).
Specifically, the step 2 includes:
step 2.1, setting a binary authentication image
Figure 950908DEST_PATH_IMAGE042
Is of a size of
Figure 570108DEST_PATH_IMAGE043
First, of
Figure 102721DEST_PATH_IMAGE045
A significant region is
Figure 957413DEST_PATH_IMAGE004
，
Figure 626292DEST_PATH_IMAGE005
，
Figure 291760DEST_PATH_IMAGE006
Represents the total number of salient regions, will
Figure 577247DEST_PATH_IMAGE004
Is divided into the size of
Figure 970052DEST_PATH_IMAGE002
The initial threshold of the polynomial-based secret image sharing algorithm is set to (2, 2) for the three RGB channels of (1), and the salient region is set to
Figure 759016DEST_PATH_IMAGE004
Pixel value of each channel in (1)
Figure 720019DEST_PATH_IMAGE007
Repeating steps 2.2 to 2.5, wherein,
Figure 837010DEST_PATH_IMAGE008
，
Figure 908872DEST_PATH_IMAGE009
；
step 2.2, in the secret image sharing algorithm based on the polynomial, and adopting the initial share generated by the following formula:
Figure 208135DEST_PATH_IMAGE010
wherein,
Figure 808880DEST_PATH_IMAGE011
to represent
Figure 68960DEST_PATH_IMAGE004
The value of the pixel of (a) is,
Figure 288720DEST_PATH_IMAGE012
the coefficients of the function are represented by,
Figure 317856DEST_PATH_IMAGE013
it is shown that the remainder operation is performed,
Figure 482646DEST_PATH_IMAGE014
the number of the prime numbers is represented,
Figure 230022DEST_PATH_IMAGE015
represents the key of the secret key and the secret key,
Figure 378107DEST_PATH_IMAGE016
the initial fractions generated are respectively
Figure 137115DEST_PATH_IMAGE017
And
Figure 345243DEST_PATH_IMAGE018
，
Figure 438969DEST_PATH_IMAGE019
representing an order;
step 2.3, the visual secret image sharing algorithm based on the random grid uses two temporary bits 0 and 1 to provide
Figure 390745DEST_PATH_IMAGE020
By encrypting the pixel values of
Figure 128894DEST_PATH_IMAGE021
Representing, calculating
Figure 383289DEST_PATH_IMAGE022
By analogy, when
Figure 574099DEST_PATH_IMAGE023
When it is in use, make
Figure 454199DEST_PATH_IMAGE024
If, if
Figure 312433DEST_PATH_IMAGE025
Then, then
Figure 862363DEST_PATH_IMAGE026
Wherein
Figure 681415DEST_PATH_IMAGE027
Expressed as randomly arranged pixel values, which will then be
Figure 974993DEST_PATH_IMAGE027
Is randomly assigned to
Figure 546789DEST_PATH_IMAGE028
，
Figure 533199DEST_PATH_IMAGE029
Represented as a binary authentication image
Figure 839547DEST_PATH_IMAGE020
A pixel value of (a);
step 2.4, with
Figure 671237DEST_PATH_IMAGE030
Representing a pixel
Figure 238484DEST_PATH_IMAGE031
As a result of the xor operation with the 4 least significant bits, for each pixel value in the initial share generated in step 2.2, a decision is first made
Figure 523359DEST_PATH_IMAGE032
If yes, then determining
Figure 176058DEST_PATH_IMAGE033
And
Figure 686805DEST_PATH_IMAGE034
if the judgment result is true, obtaining the initial share after the exclusive-or operation, and entering the step 2.5, otherwise, returning to the step 2.2;
step 2.5, the initial share obtained in step 2.4 after XOR operation is divided by
Figure 108559DEST_PATH_IMAGE007
And
Figure 436772DEST_PATH_IMAGE035
in combination with the above, wherein,
Figure 701400DEST_PATH_IMAGE036
is shown as
Figure 140471DEST_PATH_IMAGE036
A significant area, and
Figure 557677DEST_PATH_IMAGE037
finally, the final share of the participants with authentication ability obtained by the participants is self
Figure 791213DEST_PATH_IMAGE038
Of other participants
Figure 418503DEST_PATH_IMAGE018
The dealer's resulting final share of the dealer with certification capability is all
Figure 520320DEST_PATH_IMAGE018
Combinations of (a) and (b).
An exemplary combination of shares is shown in fig. 2, the image has 4 participants, respectively users A, B, C, D, and each ROIs region can obtain two initial shares, namely, two initial shares, after the above steps 2.1 to 2.5 are performed on each detected ROIs region
Figure 916666DEST_PATH_IMAGE038
、
Figure 462048DEST_PATH_IMAGE018
. Each user can be shared by his own ROI
Figure 576635DEST_PATH_IMAGE038
With other users
Figure 91930DEST_PATH_IMAGE018
The final share of the combined participants, which the distributor can obtain shared by each ROIs
Figure 732996DEST_PATH_IMAGE018
The combined dealer final share.
And 3, taking the areas outside all the salient areas in the original image as original background images, uploading the original background images to a cloud server, generating a QR (quick response) code by the cloud server according to the storage link of the original background images, generating a cover image of the QR code according to the compressed background images, wherein the image quality of the compressed background images is lower than that of the original background images, and finally, issuing the generated QR code to a social network by the cloud server.
After the encryption in the step 2, the original background image is uploaded to the cloud server, the cloud server generates a QR code according to the storage link of the original background image, and generates a cover image of the QR code according to the compressed background image, wherein the image quality of the compressed background image is lower than that of the original background image. The low-quality compressed background image is used for generating a front cover image of the QR code, and the privacy and the usability of the QR code can be met to a certain extent. And finally, the generated QR code is published to a social network.
And 4, when the participant and the dealer scan the QR codes through the code scanning equipment, the participant uploads the final share of the participant to the social network, the dealer uploads the final share of the dealer to the social network, the final share of the participant and the final share of the dealer are authenticated, and the image is restored by using a Lagrangian interpolation method after the authentication is successful.
In the authentication recovery stage, the image can be recovered by using a Lagrange interpolation method after the authentication is successful by only performing simple stacking operation on the share uploaded to the cloud by the participant and other participants or dealers. The cloud end can combine the ROIs restored and reconstructed with the background image, the link of the QR code is updated and generated, and other users can obtain the lossless reconstructed secret image only by scanning again.
Specifically, step 4 includes:
and 4.1, when the participants and the dealers scan the QR codes through the code scanning equipment, uploading the final shares of the participants to the social network by the participants, uploading the final shares of the dealers to the social network by the dealers, and adopting the final shares of the participants or the final shares of the dealers uploaded to the social network
Figure 573913DEST_PATH_IMAGE039
It is shown that,
Figure 51162DEST_PATH_IMAGE039
is of a size of
Figure 370147DEST_PATH_IMAGE002
There are two cases according to the number of participants:
first, when only one participant uploads the participant's final share, the XOR operation result is computed
Figure 880368DEST_PATH_IMAGE040
And will beStacking the calculated result and the final share of the dealer to obtain a detection image
Figure 892187DEST_PATH_IMAGE041
Then detecting the image
Figure 591152DEST_PATH_IMAGE041
And binary authentication image
Figure 713829DEST_PATH_IMAGE042
Carrying out consistency comparison, if the consistency comparison is passed, successfully authenticating, and entering a step 4.2, otherwise, unsuccessfully authenticating, marking the participant as a deceptive person and recording the deceptive person by the cloud, and then informing other participants of the information;
secondly, when a plurality of participants upload respective final shares of the participants, calculating the exclusive or operation result corresponding to the final shares of the participants
Figure 939274DEST_PATH_IMAGE040
Then, the calculation results are stacked pairwise to obtain a plurality of detection images
Figure 981048DEST_PATH_IMAGE041
Each detected image is processed
Figure 557523DEST_PATH_IMAGE041
And binary authentication image
Figure 359257DEST_PATH_IMAGE042
And (4) consistency comparison is carried out, if the consistency comparison is passed, the authentication is successful, the step 4.2 is carried out, otherwise, the authentication is unsuccessful, the cloud records the deceased person, and the information is informed to other participants.
And 4.2, carrying out image restoration on the authenticated final share of the participants and the authenticated final share of the dealers by adopting a Lagrange interpolation method to obtain
Figure 173629DEST_PATH_IMAGE006
Each size is
Figure 792829DEST_PATH_IMAGE043
Is/are as follows
Figure 450076DEST_PATH_IMAGE044
Wherein, in the process,
Figure 914555DEST_PATH_IMAGE044
represented as a salient region after reconstruction.
An image in the social network is experimentally analyzed by applying the method of the embodiment, and fig. 3 is a comparison graph of peak signal-to-noise ratio (PSNR) of different schemes under a threshold value of (2, 2). Fig. 3 shows that by analyzing peak signal-to-noise ratios (PSNR) of images under different schemes, the PSNR of the social network recovery graph obtained by using the method of the present invention is the highest, and the effect is the best, that is, the method of the present invention can achieve lossless recovery. The method can effectively meet the autonomous privacy control sharing of the social network participants.
In summary, according to the image sharing method based on the two-dimensional code social network provided by the embodiment, because the QR code has strong robustness, the QR code generated by the link of the high-quality original background image is published to the social network, so that various lossy operations of the social network on the high-quality image can be effectively avoided.
Referring to fig. 4, the present invention further provides an image sharing system based on a two-dimensional code social network, wherein the system includes:
a region detection module to:
carrying out region detection on the human face in the original image to obtain a plurality of salient regions;
an encryption processing module to:
carrying out encryption processing on each detected significant region by utilizing a secret image sharing algorithm based on a polynomial to generate a plurality of initial shares, then carrying out XOR operation on the generated initial shares by combining a visual secret sharing algorithm based on a random grid and a binary authentication image through 4-bit least significant bits to obtain initial shares after the XOR operation, finally combining the initial shares after the XOR operation in a preset combination mode to obtain a final share of participants and a final share of a distributor with authentication capability, sharing the final share of the participants to the corresponding participants, and sharing the final share of the distributor to the corresponding distributor;
a link generation module to:
taking areas except all salient areas in the original image as original background images, uploading the original background images to a cloud server, generating a QR code by the cloud server according to a storage link of the original background images, and generating a cover image of the QR code according to a compressed background image, wherein the image quality of the compressed background image is lower than that of the original background image, and finally, the cloud server issues the generated QR code to a social network;
an image restoration module to:
when the participants and the dealers scan the QR codes through the code scanning equipment, the participants upload the final shares of the participants to the social network, the dealers upload the final shares of the dealers to the social network, the final shares of the participants and the final shares of the dealers are authenticated, and the images are restored by using a Lagrangian interpolation method after the authentication is successful.
The invention further provides a storage medium on which a computer program is stored, wherein the program is executed by a processor to implement the image sharing method based on the two-dimensional code social network.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.

Claims (8)

1. An image sharing method based on a two-dimensional code social network is characterized by comprising the following steps:
step 1, performing region detection on a human face in an original image to obtain a plurality of salient regions;
step 2, carrying out encryption processing on each detected significant region by utilizing a secret image sharing algorithm based on a polynomial to generate a plurality of initial shares, then carrying out XOR operation on the generated initial shares by combining a visual secret sharing algorithm based on a random grid and a binary authentication image through 4-bit least significant bits to obtain initial shares after XOR operation, finally combining the initial shares after XOR operation in a preset combination mode to obtain a final share of a participant and a final share of a distributor with authentication capability, sharing the final share of the participant to the corresponding participant, and sharing the final share of the distributor to the corresponding distributor;
step 3, taking areas except all the salient areas in the original image as original background images, uploading the original background images to a cloud server, generating a QR (quick response) code by the cloud server according to a storage link of the original background images, and generating a cover image of the QR code according to the compressed background images, wherein the image quality of the compressed background images is lower than that of the original background images, and finally, the cloud server issues the generated QR code to a social network;
and 4, when the participant and the dealer scan the QR codes through the code scanning equipment, the participant uploads the final share of the participant to the social network, the dealer uploads the final share of the dealer to the social network, the final share of the participant and the final share of the dealer are authenticated, and the image is restored by using a Lagrangian interpolation method after the authentication is successful.
2. The image sharing method based on the two-dimensional code social network is characterized in that in the step 2, the initial threshold value of the secret image sharing algorithm based on the polynomial is (2, 2).
3. The image sharing method based on the two-dimensional code social network according to claim 2, wherein the step 2 specifically comprises:
step 2.1, setting a binary authentication image
Figure 217883DEST_PATH_IMAGE001
Is of a size of
Figure 887898DEST_PATH_IMAGE002
First, of
Figure 2485DEST_PATH_IMAGE003
A significant region is
Figure 48938DEST_PATH_IMAGE004
，
Figure 299791DEST_PATH_IMAGE005
，
Figure 140708DEST_PATH_IMAGE006
Represents the total number of salient regions, will
Figure 742591DEST_PATH_IMAGE004
Is divided into the size of
Figure 327156DEST_PATH_IMAGE002
The initial threshold of the polynomial-based secret image sharing algorithm is set to (2, 2) for the three RGB channels of (1), and the salient region is set to
Figure 698094DEST_PATH_IMAGE004
Pixel value of each channel in
Figure 709913DEST_PATH_IMAGE007
Repeating steps 2.2 to 2.5, wherein,
Figure 796162DEST_PATH_IMAGE008
，
Figure 918839DEST_PATH_IMAGE009
；
step 2.2, in the secret image sharing algorithm based on the polynomial, and adopting the initial share generated by the following formula:
Figure 144283DEST_PATH_IMAGE010
wherein,
Figure 592582DEST_PATH_IMAGE011
to represent
Figure 903478DEST_PATH_IMAGE004
The value of the pixel of (a) is,
Figure 829846DEST_PATH_IMAGE012
the coefficients of the function are represented by,
Figure 175376DEST_PATH_IMAGE013
it is indicated that the remainder operation is performed,
Figure 528997DEST_PATH_IMAGE014
the number of the prime numbers is represented,
Figure 327189DEST_PATH_IMAGE015
represents the key of the secret key and the secret key,
Figure 57248DEST_PATH_IMAGE016
the initial fractions generated are respectively
Figure 257285DEST_PATH_IMAGE017
And
Figure 516228DEST_PATH_IMAGE018
，
Figure 801716DEST_PATH_IMAGE019
representing an order;
step 2.3, the visual secret image sharing algorithm based on the random grid uses two temporary bits 0 and 1 to provide
Figure 335465DEST_PATH_IMAGE020
Is encrypted with
Figure 124430DEST_PATH_IMAGE021
Representing, calculating
Figure 85432DEST_PATH_IMAGE022
And so on; when in use
Figure 861146DEST_PATH_IMAGE023
When it is in use, make
Figure 667428DEST_PATH_IMAGE024
If, if
Figure 842057DEST_PATH_IMAGE025
Then, then
Figure 973961DEST_PATH_IMAGE026
Wherein
Figure 234042DEST_PATH_IMAGE027
Expressed as randomly arranged pixel values, which will then be
Figure 844014DEST_PATH_IMAGE027
Is randomly assigned to
Figure 873150DEST_PATH_IMAGE028
，
Figure 175956DEST_PATH_IMAGE029
Represented as a binary authentication image
Figure 657753DEST_PATH_IMAGE020
A pixel value of (a);
step 2.4, with
Figure 71416DEST_PATH_IMAGE030
Representing a pixel
Figure 955059DEST_PATH_IMAGE031
As a result of the xor operation with the 4 least significant bits, for each pixel value in the initial share generated in step 2.2, a decision is first made
Figure 428765DEST_PATH_IMAGE032
If yes, then judge
Figure 397858DEST_PATH_IMAGE033
And
Figure 349634DEST_PATH_IMAGE034
if the result is positive, obtaining the initial share after the XOR operation, and entering the step 2.5, otherwise, returning to the step 2.2;
step 2.5, the initial share obtained in step 2.4 after the XOR operation is calculated as
Figure 353362DEST_PATH_IMAGE007
And
Figure 997970DEST_PATH_IMAGE035
in combination with the above, wherein,
Figure 287367DEST_PATH_IMAGE036
is shown as
Figure 42833DEST_PATH_IMAGE036
A significant area, and
Figure 635489DEST_PATH_IMAGE037
finally, the final share of the participants with authentication ability obtained by the participants is self
Figure 450998DEST_PATH_IMAGE038
And other participants
Figure 394683DEST_PATH_IMAGE018
In combination with (1)The final share of the dealer with certification ability obtained by the dealer is all
Figure 953840DEST_PATH_IMAGE018
Combinations of (a) and (b).
4. The image sharing method based on the two-dimensional code social network according to claim 3, wherein the step 4 specifically comprises:
and 4.1, when the participants and the dealers scan the QR codes through the code scanning equipment, uploading the final shares of the participants to the social network by the participants, uploading the final shares of the dealers to the social network by the dealers, and adopting the final shares of the participants or the final shares of the dealers uploaded to the social network
Figure 666582DEST_PATH_IMAGE039
It is shown that,
Figure 387413DEST_PATH_IMAGE039
is of the size of
Figure 818394DEST_PATH_IMAGE002
There are two cases according to the number of participants:
first, when only one participant uploads the final share of the participant, the result of the XOR operation is computed
Figure 915663DEST_PATH_IMAGE040
Stacking the calculated result and the final share of the dealer to obtain a detection image
Figure 748490DEST_PATH_IMAGE041
Then detecting the image
Figure 640223DEST_PATH_IMAGE041
And binary authentication image
Figure 558500DEST_PATH_IMAGE042
Carrying out consistency comparison, if the consistency comparison is passed, the authentication is successful, and entering a step 4.2;
secondly, when a plurality of participants upload respective final shares of the participants, calculating the exclusive or operation result corresponding to the final shares of the participants
Figure 459460DEST_PATH_IMAGE040
Then, the calculation results are stacked pairwise to obtain a plurality of detection images
Figure 881214DEST_PATH_IMAGE041
Each detected image is processed
Figure 209427DEST_PATH_IMAGE041
And binary authentication image
Figure 352351DEST_PATH_IMAGE042
Consistency comparison is carried out, if the consistency comparison is passed, authentication is successful, and the step 4.2 is carried out;
and 4.2, carrying out image restoration on the authenticated final share of the participants and the authenticated final share of the dealers by adopting a Lagrange interpolation method to obtain the final share of the participants and the dealers
Figure 57002DEST_PATH_IMAGE043
Is/are as follows
Figure 598842DEST_PATH_IMAGE044
Wherein
Figure 97956DEST_PATH_IMAGE044
represented as a salient region after reconstruction.
5. The image sharing method based on the two-dimensional code social network according to claim 1, wherein the step 1 specifically comprises:
and detecting the regions of the human face in the original image by adopting a human face recognition algorithm to obtain a plurality of salient regions.
6. The image sharing method based on the two-dimensional code social network according to claim 5, wherein the step 1 specifically comprises:
the original image is divided into R, G, B three channels, and then the face recognition algorithm is adopted to detect the face region in the original image, so as to obtain a plurality of salient regions.
7. An image sharing system based on a two-dimensional code social network is characterized in that the system comprises:
a region detection module to:
carrying out region detection on the human face in the original image to obtain a plurality of salient regions;
an encryption processing module to:
carrying out encryption processing on each detected significant region by utilizing a secret image sharing algorithm based on a polynomial to generate a plurality of initial shares, then carrying out XOR operation on the generated initial shares by combining a visual secret sharing algorithm based on a random grid and a binary authentication image through 4-bit least significant bits to obtain initial shares after the XOR operation, finally combining the initial shares after the XOR operation in a preset combination mode to obtain a final share of participants and a final share of a distributor with authentication capability, sharing the final share of the participants to the corresponding participants, and sharing the final share of the distributor to the corresponding distributor;
a link generation module to:
taking areas except all salient areas in the original image as original background images, uploading the original background images to a cloud server, generating a QR code by the cloud server according to a storage link of the original background images, and generating a cover image of the QR code according to a compressed background image, wherein the image quality of the compressed background image is lower than that of the original background image, and finally, the cloud server issues the generated QR code to a social network;
an image restoration module to:
when the participants and the dealers scan the QR codes through the code scanning equipment, the participants upload the final shares of the participants to the social network, the dealers upload the final shares of the dealers to the social network, the final shares of the participants and the final shares of the dealers are authenticated, and the images are restored by using a Lagrangian interpolation method after the authentication is successful.
8. A storage medium having a computer program stored thereon, wherein the computer program is executed by a processor to implement the image sharing method based on the two-dimensional code social network according to any one of claims 1 to 6.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116095245A (en) * 2023-04-07 2023-05-09 江西财经大学 Secret information sharing method, system, terminal and storage medium

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130080589A1 (en) * 2011-09-22 2013-03-28 Walton Advanced Engineering Inc. Image-based data sharing system and its executive method
CN103942290A (en) * 2014-04-11 2014-07-23 北京金山网络科技有限公司 Method and equipment used for providing images in webpage in terminal
US20160078335A1 (en) * 2014-09-15 2016-03-17 Ebay Inc. Combining a qr code and an image
CN106529368A (en) * 2016-09-29 2017-03-22 上海正雅齿科科技有限公司 Method for localizing recognition region of two-dimensional code
CN207282157U (en) * 2017-07-20 2018-04-27 朗昇科技（苏州）有限公司 A kind of Quick Response Code ultrasonoscopy shared system
CN110602349A (en) * 2019-08-27 2019-12-20 成都信息工程大学 Method for security protection of associated image content
CN110751500A (en) * 2019-09-06 2020-02-04 中国平安财产保险股份有限公司 Processing method and device for sharing pictures, computer equipment and storage medium
WO2020156552A1 (en) * 2019-01-31 2020-08-06 北京嘀嘀无限科技发展有限公司 Two-dimensional code generation and recognition methods and devices
CN112422767A (en) * 2020-10-30 2021-02-26 国家电网有限公司大数据中心 Secret sharing method and system based on visual effect
CN112529974A (en) * 2020-12-03 2021-03-19 中国科学院深圳先进技术研究院 Color visual password sharing method and device for binary image
CN113160944A (en) * 2021-02-03 2021-07-23 江西财经大学 Medical image sharing method based on block chain

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130080589A1 (en) * 2011-09-22 2013-03-28 Walton Advanced Engineering Inc. Image-based data sharing system and its executive method
CN103942290A (en) * 2014-04-11 2014-07-23 北京金山网络科技有限公司 Method and equipment used for providing images in webpage in terminal
US20160078335A1 (en) * 2014-09-15 2016-03-17 Ebay Inc. Combining a qr code and an image
CN106529368A (en) * 2016-09-29 2017-03-22 上海正雅齿科科技有限公司 Method for localizing recognition region of two-dimensional code
CN207282157U (en) * 2017-07-20 2018-04-27 朗昇科技（苏州）有限公司 A kind of Quick Response Code ultrasonoscopy shared system
WO2020156552A1 (en) * 2019-01-31 2020-08-06 北京嘀嘀无限科技发展有限公司 Two-dimensional code generation and recognition methods and devices
CN110602349A (en) * 2019-08-27 2019-12-20 成都信息工程大学 Method for security protection of associated image content
CN110751500A (en) * 2019-09-06 2020-02-04 中国平安财产保险股份有限公司 Processing method and device for sharing pictures, computer equipment and storage medium
CN112422767A (en) * 2020-10-30 2021-02-26 国家电网有限公司大数据中心 Secret sharing method and system based on visual effect
CN112529974A (en) * 2020-12-03 2021-03-19 中国科学院深圳先进技术研究院 Color visual password sharing method and device for binary image
CN113160944A (en) * 2021-02-03 2021-07-23 江西财经大学 Medical image sharing method based on block chain

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
SONG WAN 等: "Visual Secret Sharing Scheme with (k, n) Threshold Based on QR Codes", 《2016 12TH INTERNATIONAL CONFERENCE ON MOBILE AD-HOC AND SENSOR NETWORKS (MSN)》 *
WENYING WEN 等: "A novel selective image encryption method based on saliency detection", 《2016 VISUAL COMMUNICATIONS AND IMAGE PROCESSING (VCIP)》 *
宫庆红: "无损恢复的秘密图像分享关键技术研究", 《中国优秀硕士学位论文全文数据库 信息科技辑》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116095245A (en) * 2023-04-07 2023-05-09 江西财经大学 Secret information sharing method, system, terminal and storage medium

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