CN114579939A - Image copyright protection system and method based on block chain digital watermark - Google Patents

Image copyright protection system and method based on block chain digital watermark Download PDF

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Publication number
CN114579939A
CN114579939A CN202210198663.3A CN202210198663A CN114579939A CN 114579939 A CN114579939 A CN 114579939A CN 202210198663 A CN202210198663 A CN 202210198663A CN 114579939 A CN114579939 A CN 114579939A
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China
Prior art keywords
module
information
image
watermark
medical
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Pending
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CN202210198663.3A
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Chinese (zh)
Inventor
周琪龙
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Shanghai Yunhuichuang Network Technology Co ltd
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Shanghai Yunhuichuang Network Technology Co ltd
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Priority to CN202210198663.3A priority Critical patent/CN114579939A/en
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
    • G06F21/16—Program or content traceability, e.g. by watermarking
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/60—Protecting data
    • G06F21/602—Providing cryptographic facilities or services
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/60—Protecting data
    • G06F21/64—Protecting data integrity, e.g. using checksums, certificates or signatures
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T1/00—General purpose image data processing
    • G06T1/0021—Image watermarking

Abstract

The invention relates to the technical field of image copyright protection, in particular to an image copyright protection system and method based on block chain digital watermarking; and S1, browsing and selecting the image files existing on the system through the client composed of hardware when the medical institution personnel borrow the files of the medical images, and sending out a request for encrypted downloading. The invention embeds the mark and the medical institution mark into the image file in a digital watermark mode, and the information can be inquired through the identification code, thereby determining the copyright ownership of the image file, realizing the medical image information hiding system, embedding the copyright mark and the additional information into the medical image file in an invisible mode on the premise of ensuring the undistorted original medical image, and meeting the copyright protection requirement of the medical industry on the medical image.

Description

Image copyright protection system and method based on block chain digital watermark
Technical Field
The invention relates to the technical field of image copyright protection, in particular to an image copyright protection system and method based on block chain digital watermarking.
Background
The block chain is a term in the technical field of information, and essentially, the block chain is a shared database, and data or information stored in the shared database has the characteristics of unforgeability, whole-course trace, traceability, public transparency, collective maintenance and the like. The digital watermarking technology does not affect the normal use of a carrier, some identification information with special significance is embedded into a digital product to realize copyright protection, the embedded watermarking information is based on the principle of not destroying the appreciation and use value of original data, the digital watermarking has practical value in the aspects of true and false identification, hidden communication, mark hiding and the like, the research on the digital watermarking technology is an important part in the research field of information hiding technology, is an important measure for protecting the copyright of the digital product, and is widely applied.
Chinese patent application No. CN102547254A discloses a digital video image copyright protection method and system based on watermarking and encryption, and the description includes the following steps: step 1, a sending end is used for embedding visible erasable watermarks into an original or compressed video image; and/or step 2, the sending end carries out key level parameter positioning and selective encryption processing on the compressed video image; step 3, the receiving end decrypts and erases the watermark according to the authorization, and restores the digital video image; the visible erasable watermark has visibility, robustness and erasability. Step 2 further comprises: the sending end selects part of hierarchical key data according to the coding type; the sending end selects all or part of the hierarchical key data to be encrypted and describes the hierarchical key data in the digital copyright management description information; and the receiving end obtains the decryption authority of all or part of the hierarchical key data according to the authorization, so that a high-quality complete video image or a part of the video image is obtained.
However, with the continuous development and maturity of medical imaging technology, the effect of medical images (images) is gradually increased, the requirements of medical images on image quality are higher, and the medical images have definite sensitive regions and non-sensitive regions, so that a series of information security problems such as interception, tampering, illegal copying and the like exist in network transmission, if copyright protection cannot be performed on the medical images, copyright information is not clear, and effective tracing of image files cannot be performed, and therefore, an image copyright protection system and method based on block chain digital watermarking are provided.
Disclosure of Invention
The invention aims to provide an image copyright protection system and method based on block chain digital watermarking, aiming at the defects that in the prior art, a series of information safety problems of interception, tampering, illegal copying and the like exist in network transmission of medical images, and if copyright protection cannot be performed on the medical images, the copyright information is not clear and cannot be effectively traced back to image files.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for protecting image copyright based on block chain digital watermarking comprises the following steps:
and S1, when the medical institution personnel loan the medical image file, browsing and selecting the image file existing on the system through the client side composed of hardware, and sending out a request for encrypted downloading.
And S2, after receiving the encrypted downloading request, the server encrypts and watermarks the selected image file.
S3, recording the related information into the database in the embedding process to generate a unique identification, embedding the identification and the medical institution mark into the pixel part of the image file in a digital watermark mode, and then regenerating the encrypted image file.
And S4, after the operation of encrypting and embedding the watermark is finished, providing a link for the user to download the encrypted image file.
The invention is further configured to: in the step S1, the hardware component includes a web server, a medical institution information database server, and a medical file data server.
The invention is further configured to: in step S3, the related information includes information of the pixel portion in the extracted image file, operator information, file information, and the like.
The invention also provides an image copyright protection system based on the block chain digital watermark, which comprises the following steps:
the personnel information operation module belongs to a foreground service module and is mainly used for being responsible for registration addition, identity authentication determination, management of each personnel information database and the like of medical institution personnel, the using roles of the personnel information operation module are respectively a doctor and a system manager, and the doctor and the system manager can perform authentication login and operation through a browser web interface.
The medical image encryption and watermark embedding module belongs to a background processing module and is mainly responsible for generating digital watermark information to be embedded, encrypting the digital watermark information through various algorithms and embedding the digital watermark information into an image file, wherein the embedded watermark information is a section of unique identification code and a mark of a medical institution, and other related information can be inquired from a database through the identification code.
The medical image watermark detection module belongs to a background processing module and is mainly responsible for detecting whether the image file contains a watermark embedded in advance and extracting the embedded information.
The invention is further configured to: the personnel information operation module comprises a web server module, an information registration module, an identity confirmation module, a database management module and an information recording module.
The invention is further configured to: the web server module is in signal connection with the information registration module, the information registration module is in signal connection with the identity confirmation module, and the database management module is in signal connection with the information recording module.
The invention is further configured to: the medical image encryption and watermark embedding module comprises a digital watermark information generation module, an algorithm encryption module and an embedding module, wherein the digital watermark information generation module is in signal connection with the algorithm encryption module, and the algorithm encryption module is in signal connection with the embedding module.
The invention is further configured to: the medical image watermark detection module comprises a watermark detection module and an information extraction module, and the watermark detection module is in signal connection with the information extraction module.
The invention is further configured to: the algorithm encryption module comprises a medical image extraction module, a watermark image generation module, an image scrambling module and a blocking module.
The invention is further configured to: the watermark image generation module is in signal connection with the image scrambling module, and the image scrambling module is in signal connection with the block module.
Advantageous effects
Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:
the invention embeds the mark and the medical institution mark into the image file in a digital watermark mode, useful information can be inquired through the identification code, the copyright attribution of the image file can be determined through the information, the provenance and the responsible person of the outflow of the image file can be found out if the leakage infringement occurs, a medical image information hiding system is realized, the copyright mark and additional information can be embedded into the medical image file in an invisible mode on the premise of ensuring the undistorted original medical image, the copyright protection requirement of the medical industry on the medical image can be met, the practical application of the algorithm can be directly operated at a browser end, and meanwhile, the cross-platform use can be realized, and the practicability is strong.
Drawings
FIG. 1 is a system flow diagram of a block chain digital watermark-based image copyright protection system and method;
FIG. 2 is a system diagram of a personnel information operation module of a block chain digital watermark-based image copyright protection system and method;
FIG. 3 is a system diagram of a medical image encryption and watermarking module of an image copyright protection system and method based on block chain digital watermarking;
FIG. 4 is a system diagram of a medical image watermark detection module of a system and method for image copyright protection based on block chain digital watermarking;
fig. 5 is a system diagram of an algorithm encryption module of the image copyright protection system and method based on block chain digital watermarking.
The reference numbers in the figures illustrate:
1. a personnel information operation module; 2. the medical image encryption and watermark embedding module; 3. a medical image watermark detection module; 11. a web server module; 12. an information registration module; 13. an identity confirmation module; 14. a database management module; 15. an information recording module; 21. a digital watermark information generation module; 22. an algorithm encryption module; 23. an embedding module; 31. a watermark detection module; 32. an information extraction module; 221. a medical image extraction module; 222. a watermark image generation module; 223. an image scrambling module; 224. and (5) a partitioning module.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention will be further described with reference to the following examples.
Example 1
Referring to fig. 1-5, a method for protecting image copyright based on block chain digital watermarking includes the following steps:
step one, when medical institution personnel borrow the medical image files, browsing and selecting the image files existing on the system through a client side consisting of hardware, and sending out a request for encryption and downloading.
The hardware comprises a web server, a medical institution information database server and a medical file data server.
And step two, after the server receives the encryption downloading request, encrypting and embedding the watermark on the selected image file.
And thirdly, recording related information into a database in the embedding process to generate a unique identifier, embedding the unique identifier and the medical institution mark into a pixel part of the image file in a digital watermark mode, and then regenerating the encrypted image file.
The related information includes information of a pixel portion in the extracted image file, operator information, file information, and the like.
And step four, after the operation of encrypting and embedding the watermark is finished, providing a link for the user to download the encrypted image file.
In the embodiment, the medical image data of the medical institution is stored in a DICOM file mode, so that the digital image information communication standards among different devices can be unified, and medical diagnosis devices scattered in different geographic positions are allowed to create a unified medical information database; when medical institution personnel borrow the medical image file, the medical institution personnel can browse the image file existing on the selection system through a client consisting of hardware and send out an encrypted downloading request, after receiving the encrypted downloading request, a server carries out encrypted watermark embedding on the selected image file, in the embedding process, firstly, an image pixel part in the DICOM file is extracted, then, information of an operator, information of the file and other related information are recorded into a database to generate a unique identifier, then, the identifier and a medical institution mark are embedded into the pixel part in the image file in a digital watermark mode, then, the encrypted image file is regenerated, after the operation of the encrypted watermark embedding is finished, a link is provided for a user to download the encrypted image file, and if the image file is leaked, the right of infringement occurs, the medical institution can extract the digital watermark in the suspected infringement medical image file as the legal basis for copyright maintenance.
Example 2
Referring to fig. 1-5, the present invention further provides a system for protecting image copyright based on block chain digital watermarking, including:
the personnel information operation module 1 belongs to a foreground service module and is mainly used for registering and adding medical institution personnel, identity authentication determination, management of each personnel information database and the like, the using roles of the personnel information operation module 1 are respectively a doctor and a system manager, and the doctor and the system manager can perform authentication login and operation through a browser web interface.
The medical image encryption and watermark embedding module 2 belongs to a background processing module and is mainly responsible for generating digital watermark information to be embedded, encrypting the digital watermark information through various algorithms and embedding the digital watermark information into an image file, wherein the embedded watermark information is a section of unique identification code and a mark of a medical institution, and other related information can be inquired from a database through the identification code.
The medical image watermark detection module 3, the medical image watermark detection module 3 belongs to the background processing module, and is mainly responsible for detecting whether the image file contains the watermark embedded in advance, and extracting the embedded information.
The personal information operation module 1 includes a web server module 11, an information registration module 12, an identity confirmation module 13, a database management module 14, and an information recording module 15.
The web server module 11 is in signal connection with the information registration module 12, the information registration module 12 is in signal connection with the identity confirmation module 13, and the database management module 14 is in signal connection with the information recording module 15.
The medical image encryption and watermark embedding module 2 comprises a digital watermark information generating module 21, an algorithm encryption module 22 and an embedding module 23, wherein the digital watermark information generating module 21 is in signal connection with the algorithm encryption module 22, and the algorithm encryption module 22 is in signal connection with the embedding module 23.
The medical image watermark detection module 3 comprises a watermark detection module 31 and an information extraction module 32, and the watermark detection module 31 is in signal connection with the information extraction module 32.
The algorithm encryption module 22 includes a medical image extraction module 221, a watermark image generation module 222, an image scrambling module 223, and a blocking module 224.
The watermark image generation module 222 is in signal connection with the image scrambling module 223, and the image scrambling module 223 is in signal connection with the blocking module 224.
In this embodiment, the use roles of the personnel information operation module 1 are respectively a doctor and a system manager, the personnel information operation module 1 belongs to a foreground service module, the web server module 11 provides hardware services, medical institution personnel need to log in through a browser web interface of the web server module 11, the information registration module 12 completes registration and addition of information, the identity confirmation module 13 is used for identity authentication determination, the database management module 14 processes information of each personnel after identity determination, and simultaneously transmits the information to the information recording module 15, and the information recording module 15 completes record encryption processing behaviors; the medical image encryption and watermark embedding module 2 belongs to a background processing module, after the digital watermark information generating module 21 generates digital watermark information to be embedded, the algorithm encryption module 22 encrypts the digital watermark information through various algorithms, firstly, the medical image is extracted by using the medical image extracting module 221, the watermark image is generated by using the watermark image generating module 222, the image scrambling module 223 scrambles the image by using an Arnold positive transformation algorithm, finally, the extracted medical image is subjected to 8 x 8 blocking by using the blocking module 224, and finally, the embedded module 23 embeds the encrypted watermark information into an image file (the embedded watermark information is a section of unique identification code and a mark of a medical institution), and other related information can be inquired from a database through the identification code; the medical image watermark detection module 3 belongs to a background processing module, the watermark detection module 31 can detect whether the image file contains a pre-embedded watermark, and finally the information extraction module 32 extracts the embedded information.
The invention can encrypt and embed the watermark to the image file, at the same time, the information of the operator, the information of the file and other related information can be recorded into the database to generate a unique identifier, then the identifier and the medical institution mark are embedded into the image file in the way of digital watermark, then the encrypted image file is generated again, the useful information (such as the lending time of the image file, the lending object and the processor when the image file is lent) can be inquired by the identifier code, the copyright attribution of the image file can be determined by the information, the outflow place and the responsible person of the image file can be found out if the leakage infringement occurs, when the pixel part in the image file is distorted, the extracted watermark can still identify the identifier code and the medical institution mark, the invention realizes the medical image information hiding system, under the premise of ensuring the undistorted original medical image, copyright marks and additional information can be embedded into the medical image files in an invisible mode, the copyright protection requirement of the medical industry on the medical images can be met, the practical application of the algorithm can be directly operated at a browser end, meanwhile, the cross-platform application can be realized, and the practicability is high.
Portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof, and in the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system, for example, if implemented in hardware, and in another embodiment, any one or a combination of the following techniques, as is known in the art: 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.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (10)

1. A method for protecting image copyright based on block chain digital watermark is characterized by comprising the following steps:
s1, when the medical institution personnel lend the medical image file, browsing and selecting the image file existing on the system through the client end composed of hardware, and sending out the request of encrypted downloading;
s2, after the server receives the encryption downloading request, the server carries out encryption and watermark embedding on the selected image file;
s3, recording the related information into the database in the embedding process to generate a unique identifier, embedding the unique identifier and the medical institution mark into the pixel part of the image file in a digital watermark manner, and then regenerating the encrypted image file;
and S4, after the operation of encrypting and embedding the watermark is finished, providing a link for the user to download the encrypted image file.
2. The method for image copyright protection based on block chain digital watermarking as claimed in claim 1, wherein in the step S1, the hardware components include a web server, a medical institution information database server and a medical file data server.
3. The method for protecting image copyright based on block chain digital watermark according to claim 1, wherein in the step S3, the related information includes pixel part information, operator information, file information and the like extracted from the image file.
4. An image copyright protection system based on block chain digital watermarking, comprising:
the system comprises a personnel information operation module (1), wherein the personnel information operation module (1) belongs to a foreground service module and is mainly used for registering and adding medical institution personnel, identity authentication determination, management of each personnel information database and the like, the using roles of the personnel information operation module (1) are respectively a doctor and a system manager, and the doctor and the system manager can perform authentication login and operation through a browser web interface;
the medical image encryption and watermark embedding module (2) belongs to a background processing module and is mainly responsible for generating digital watermark information to be embedded, encrypting the digital watermark information through various algorithms and embedding the digital watermark information into an image file, wherein the embedded watermark information is a section of unique identification code and a mark of a medical institution, and other related information can be inquired from a database through the identification code;
the medical image watermark detection module (3) belongs to a background processing module and is mainly responsible for detecting whether the image file contains a watermark embedded in advance and extracting the embedded information.
5. The system for protecting image copyright based on block chain digital watermark according to claim 4, characterized in that the personnel information operation module (1) comprises a web server module (11), an information registration module (12), an identity confirmation module (13), a database management module (14) and an information recording module (15).
6. The system according to claim 5, wherein the web server module (11) is in signal connection with the information registration module (12), the information registration module (12) is in signal connection with the identity confirmation module (13), and the database management module (14) is in signal connection with the information recording module (15).
7. The image copyright protection system based on block chain digital watermarking as claimed in claim 4, wherein the medical image encryption and watermarking module (2) comprises a digital watermarking information generating module (21), an algorithm encrypting module (22) and an embedding module (23), the digital watermarking information generating module (21) is in signal connection with the algorithm encrypting module (22), and the algorithm encrypting module (22) is in signal connection with the embedding module (23).
8. The system according to claim 4, wherein the medical image watermark detection module (3) comprises a watermark detection module (31) and an information extraction module (32), and the watermark detection module (31) is in signal connection with the information extraction module (32).
9. The system according to claim 7, wherein the algorithm encryption module (22) comprises a medical image extraction module (221), a watermark image generation module (222), an image scrambling module (223) and a blocking module (224).
10. The system according to claim 9, wherein the watermark image generation module (222) is in signal connection with the image scrambling module (223), and the image scrambling module (223) is in signal connection with the blocking module (224).
CN202210198663.3A 2022-03-02 2022-03-02 Image copyright protection system and method based on block chain digital watermark Pending CN114579939A (en)

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CN202210198663.3A CN114579939A (en) 2022-03-02 2022-03-02 Image copyright protection system and method based on block chain digital watermark

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Application Number Priority Date Filing Date Title
CN202210198663.3A CN114579939A (en) 2022-03-02 2022-03-02 Image copyright protection system and method based on block chain digital watermark

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