CN110069942A - Watermark embedding method, device, equipment and computer readable storage medium - Google Patents
Watermark embedding method, device, equipment and computer readable storage medium Download PDFInfo
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- CN110069942A CN110069942A CN201910204803.1A CN201910204803A CN110069942A CN 110069942 A CN110069942 A CN 110069942A CN 201910204803 A CN201910204803 A CN 201910204803A CN 110069942 A CN110069942 A CN 110069942A
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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
- G06F21/60—Protecting data
- G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
- G06F21/6218—Protecting access to data via a platform, e.g. using keys or access control rules to a system of files or objects, e.g. local or distributed file system or database
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
- H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
- H04N1/32144—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
- H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
- H04N1/32144—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
- H04N1/32149—Methods relating to embedding, encoding, decoding, detection or retrieval operations
- H04N1/3232—Robust embedding or watermarking
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Abstract
The invention discloses a kind of watermark embedding methods, comprising steps of obtaining pre-generated base unit and pre-generated watermark patterns；Wherein, the base unit is Xie Erbinsi group moment shape；The base unit is filled according to the watermark patterns, obtains watermark unit；Based on default queueing discipline, the watermark unit is embedded into file.The invention also discloses a kind of watermark embedding device, equipment and computer readable storage medium, embedded watermark unit has self-similarity, according to local watermark extracting watermark information and can restore global watermark, can effectively improve the anti-interference ability of watermark.
Description
Technical field
The present invention relates to digital watermark technology field more particularly to a kind of watermark embedding method, device, equipment and computers
Readable storage medium storing program for executing.
Background technique
With the development and progress of information technology, multimedia messages exchange has reached unprecedented depth and range, but
This also bring multimedia file infringement, bootlegging and propagate the problems such as, therefore, how to protect multimedia file copyright by
To the great attention of people, and important means of the watermark embedding technique as multimedia file copyright protection, to promoting information skill
The development of art plays important function.
Currently, the digital watermarking type of multimedia file insertion includes stealthy watermark and plaintext watermark, by by invisible water
Print or plaintext watermark with specified arrangement, be abound with arrangement, arbitrarily arrangement, troop's arrangement or diagonally the arrangement modes such as arrange and be added to
In multimedia file, to realize the watermark insertion of multimedia file.
Inventor has found in the practice of the invention, in the prior art, when the digital water of multimedia file insertion
When print type is stealthy watermark, it is difficult to carry out restoring watermark letter in the photo that reproduction obtains to the multimedia file from cracker
Breath, the anti-interference ability of stealthy watermark are lower.And when the digital watermarking type of multimedia file addition is plaintext watermark, due to
Common plaintext watermark is usually horizontal, vertical or sideling discharges ciphertext, and regularity is strong, and cracker is more to this from specific angle
Media file carries out reproduction, watermark region can be avoided, in addition, even if wrapping in the screenshot or reproduction from a photograph of the multimedia file
Watermark containing plaintext can be broken once cracker such as amplifies to its screenshot or photo, reduces, distorts or cut at the geometric attacks
Watermark in bad screenshot or photo, cause watermark information can not by accurate reproduction, the anti-interference ability of common plaintext watermark compared with
It is low.
Summary of the invention
The embodiment of the present invention provides a kind of watermark embedding method, device, equipment and computer readable storage medium, embedded
Watermark unit have self-similarity, can according to part watermark extracting watermark information and restore global watermark, can effectively mention
The anti-interference ability of high watermark.
To achieve the above object, the embodiment of the invention provides a kind of watermark embedding methods, comprising steps of
Obtain pre-generated base unit and pre-generated watermark patterns；Wherein, the base unit is Xie Erbin
This group moment shape；
The base unit is filled according to the watermark patterns, obtains watermark unit；
Based on default queueing discipline, the watermark unit is embedded into file.
As an improvement of the above scheme, the base unit generates as follows:
Based on preset minimum rectangle block size, predetermined rectangle is handled using recursive algorithm, generation is thanked
Er Binsi group moment shape, using as the base unit.
As an improvement of the above scheme, the watermark patterns generate as follows:
Obtain pre-generated basic watermark patterns and pre-generated cipher-text information；
The basic watermark patterns are filled according to the cipher-text information, obtain the watermark patterns.
As an improvement of the above scheme, described that the basic watermark patterns are filled according to the cipher-text information, it obtains
To the watermark patterns, comprising steps of
Based on preset corresponding relationship, graphic element is combined according to the cipher-text information, obtains figure ciphertext；Its
In, the preset corresponding relationship is the corresponding relationship of each character and each graphic element in the cipher-text information；
The basic watermark patterns are filled according to the figure ciphertext, obtain the watermark patterns.
As an improvement of the above scheme, described that the basic watermark patterns are filled according to the figure ciphertext, it obtains
To the watermark patterns, specifically:
Using depth-first search strategy, the basic watermark patterns are filled according to the figure ciphertext, are obtained
The watermark patterns.
As an improvement of the above scheme, described that the watermark unit is embedded into file based on default queueing discipline, it wraps
Include step:
The watermark unit is rotated according to preset watermark placement direction, obtains postrotational watermark unit；
Based on default queueing discipline, the postrotational watermark unit is embedded into file.
As an improvement of the above scheme, described that the base unit is filled according to the watermark patterns, obtain water
After impression member, further comprise the steps of:
Obtain the setup parameter of the watermark unit；
According to the setup parameter, the property parameters of the watermark unit are adjusted.
The embodiment of the invention also provides a kind of watermark embedding devices, comprising:
Module is obtained, for obtaining pre-generated base unit and pre-generated watermark patterns；Wherein, the basis
Unit is Xie Erbinsi group moment shape；
Watermark unit generation module obtains watermark for being filled according to the watermark patterns to the base unit
Unit；
It is embedded in module, for based on default queueing discipline, the watermark unit to be embedded into file.
The embodiment of the invention also provides a kind of watermark embedding apparatus, including processor, memory and it is stored in described
In memory and it is configured as the computer program executed by the processor, when the processor executes the computer program
Realize watermark embedding method as described in any one of the above embodiments.
The embodiment of the invention also provides a kind of computer readable storage medium, the computer readable storage medium includes
The computer program of storage, wherein control in computer program operation and set where the computer readable storage medium
It is standby to execute watermark embedding method as described in any one of the above embodiments.
Compared with prior art, watermark embedding method disclosed by the invention, device, equipment and computer-readable storage medium
Matter, by being filled out according to the pre-generated watermark patterns got to the pre-generated Xie Erbinsi group moment shape got
It fills, obtains watermark unit, and then based on default queueing discipline, the watermark unit is embedded into file.Due to the watermark
Unit can cover the full content in file, the safety of the file information can be effectively ensured, and the watermark unit has certainly
Similitude can extract watermark information according to the localized watermark in the watermark unit and restore global watermark, can effectively improve
The anti-interference ability of watermark.
Detailed description of the invention
Fig. 1 is a kind of flow diagram for watermark embedding method that one embodiment of the invention provides.
Fig. 2 is a kind of structural schematic diagram for Xie Erbinsi group moment shape that one embodiment of the invention provides.
Fig. 3 is a kind of structural schematic diagram for flakes figure that one embodiment of the invention provides.
Fig. 4 is a kind of watermark unit schematic diagram that one embodiment of the invention provides.
Fig. 5 is a kind of postrotational watermark unit schematic diagram that one embodiment of the invention provides.
Fig. 6 is a kind of effect diagram for realizing watermark insertion that one embodiment of the invention provides.
Fig. 7 is a kind of structural schematic diagram for watermark embedding device that one embodiment of the invention provides.
Fig. 8 is a kind of structural schematic diagram for watermark embedding apparatus that one embodiment of the invention provides.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It is a kind of flow diagram for watermark embedding method that one embodiment of the invention provides referring to Fig. 1.This method can be with
It is executed by mobile device, the mobile device for executing the interactive approach can be smart phone, tablet computer, desktop computer or notes
This computer etc., those skilled in the art can select according to the actual situation, and it is obtainable beneficial to effect not influence the present invention
Fruit.The watermark embedding method comprising steps of
S110, pre-generated base unit and pre-generated watermark patterns are obtained；Wherein, the base unit is to thank
Er Binsi group moment shape.
It should be noted that Xie Erbinsi group moment shape is a kind of fractal graph similar with Chezy-Manning formula, it is certainly
One kind of similar collection.Chezy-Manning formula is the figure on mathematical concept, uses square to carry out a point shape and constructs, unreal
Border is applied in watermark field, similarly, is not also correspondingly improved for watermark feature, and the Xie Erbinsiji in the present invention
Rectangle carries out a point shape using rectangle and constructs, and applies it in watermark field, to widen its scope of application.As shown in Fig. 2, Fig. 2
It is a kind of structural schematic diagram of Xie Erbinsi group moment shape provided in an embodiment of the present invention.
Further, the base unit generates as follows:
Based on preset minimum rectangle block size, predetermined rectangle is handled using recursive algorithm, generation is thanked
Er Binsi group moment shape, using as the base unit.
Specifically, steps are as follows: step 1 for the recursive generation of Xie Erbinsi group moment shape, is by predetermined rectangular partition
The rectangular block at each nine grids center is called center bulk by nine grids, and the rectangular block on center bulk periphery is known as periphery fritter；
Each periphery fritter is divided into nine grids respectively by step 2, consistent with step 1, the rectangular block at each nine grids center
Referred to as center bulk, the rectangular block on periphery are known as periphery fritter；Step 3, rerun step 2, until detecting that periphery is small
When the size of block is less than preset minimum rectangle block size, out of service, the figure generated at this time is Xie Erbinsi group moment shape.
It should be understood that in practical applications, the preset minimum rectangle block size can be selected according to the actual situation, not
Influence beneficial effects of the present invention.Preferably, it can be and minimum rectangle block size be preset as the character size being less than in file,
To guarantee all information covered in file, to further ensure the safety of the file information.
It should be understood that the pre-generated watermark patterns can be the watermark of digital form, it is also possible to text shape
The watermark of formula, the watermark of image format or geometric format can be selected, according to the actual situation in practical applications
Do not influence beneficial effects of the present invention.In practical applications, it can be the ciphertext arrangement mode of self-defining watermark patterns, such as
With the ciphertext arrangement mode of " rice " font or snowflake shape mode radially outward, so that when by reproduction attack or geometric attack,
No matter cracker with what angle is shot or is distorted, can be clearly apparent the ciphertext discharged in watermark patterns.
Further, the watermark patterns generate as follows:
S111, pre-generated basic watermark patterns and pre-generated cipher-text information are obtained.
It should be understood that the pre-generated basic watermark patterns can be number, be also possible to text, image or
Geometric figure can be selected according to the actual situation in practical applications, not influence beneficial effects of the present invention.It is preferred that
Ground, by taking the basic watermark patterns are geometric figure as an example, the basis watermark patterns can be flakes figure, so that meeting with
When by reproduction attack or geometric attack, no matter cracker with what angle is shot or is distorted, can be clearly apparent watermark patterns
The ciphertext of middle discharge.As shown in figure 3, Fig. 3 is a kind of structural schematic diagram of flakes figure provided in an embodiment of the present invention.
The cleartext information of user preset is converted using Encryption Algorithm it should be noted that can be, to generate
State cipher-text information.It is to be appreciated that the cleartext information can be text, it is also possible to the data or other shapes of various systems
The data of formula, do not influence beneficial effects of the present invention.The cipher-text information can be text, be also possible to the number of various systems
According to or other forms data, do not influence beneficial effects of the present invention.
Further, the cipher-text information generates as follows:
Obtain the cleartext information of user preset；
The cleartext information is converted into binary data, using as the cipher-text information.
By taking the cleartext information is decimal data as an example, it can be and turn what radix-2 algorithm will acquire using the decimal system
The decimal data of user preset is converted to binary data, using as the cipher-text information.
S112, the basic watermark patterns are filled according to the cipher-text information, obtain the watermark patterns.
By taking the cipher-text information is binary data as an example, it can be and fill the binary data to the base water
Ciphertext section is used as on each line segment of impression shape, to obtain watermark patterns.
Further, described that the basic watermark patterns are filled according to the cipher-text information, obtain the watermark
Figure, comprising steps of
Based on preset corresponding relationship, graphic element is combined according to the cipher-text information, obtains figure ciphertext；Its
In, the preset corresponding relationship is the corresponding relationship of each character and each graphic element in the cipher-text information；
The basic watermark patterns are filled according to the figure ciphertext, obtain the watermark patterns.
It should be noted that the unlimited shape of the graphic element, pattern, size and color, can be according to the ciphertext
Corresponding preset corresponding relationship, which is arranged, in the data mode of information can be the cipher-text information in the preset corresponding relationship
In the corresponding graphic element of single character.By taking the cipher-text information is binary data " 011 " as an example, described preset right
In should being related to, " " in " 0 " corresponding graphic element in cipher-text information, " 1 " corresponding pattern primitive in cipher-text information can be
"-" in element is based on preset corresponding relationship, is combined according to binary data " 011 " to graphic element, obtains graphic element
It combines " -- ", using as figure ciphertext, the figure ciphertext is filled to making on each line segment of the basic watermark patterns
For ciphertext section, to obtain watermark patterns.By filling the basic watermark according to the figure ciphertext combined by graphic element
Figure, to obtain having been filled with the watermark patterns of ciphertext, so that watermark after by reproduction attack or geometric attack, is convenient for confirmation simultaneously
And cipher-text information is told, the resistivity that geometric attack and reproduction are attacked in watermark is further improved, so that watermark is passing through
Watermark information can be still restored in high precision after crossing geometric attack or reproduction attack, to further increase the anti-interference ability of watermark.
Further, described that the basic watermark patterns are filled according to the figure ciphertext, obtain the watermark
Figure, specifically:
Using depth-first search strategy, the basic watermark patterns are filled according to the figure ciphertext, are obtained
The watermark patterns.
It is that for graphic element combines " -- ", can be using depth-first search strategy by the figure ciphertext, from
The upper left corner of basic watermark patterns starts, wired with the institute of the sequential search from top to bottom from left to right basis watermark patterns
Section, and graphic element combination " -- " is successively used to fill the line segment searched as ciphertext section, to obtain the watermark patterns.
S120, the base unit is filled according to the watermark patterns, obtains watermark unit.
It, can be with it should be understood that each rectangular block in the base unit is the region for placing the watermark patterns
It is in each rectangular block that the watermark patterns are filled in the base unit, to obtain watermark unit.As shown in figure 4,
Fig. 4 is a kind of watermark unit schematic diagram provided in an embodiment of the present invention.
S130, it is based on default queueing discipline, the watermark unit is embedded into file.
It is to be appreciated that can be based on preset N*M queueing discipline, N and M value is greater than 2, the watermark unit is pressed
In default queueing discipline insertion file, it is also possible to based on the tangent rule of the adjacent watermark unit of any two or other rows
The watermark unit is pressed in default queueing discipline insertion file, does not influence beneficial effects of the present invention by column rule.It needs
It is bright, no matter the watermark unit is arranged with which kind of preset rules, requires to guarantee the adjacent watermark list of any two
The distance between member is as small as possible, and the quantity of watermark unit is more as far as possible, and ciphertext is free of in watermark figure layer to reduce
White space avoids the occurrence of cracker and is not covered by ciphertext to picture obtained from the file progress screenshot of insertion watermark or reproduction
The case where, so that the resistivity that geometric attack and reproduction are attacked in watermark is improved, so that watermark is being passed through geometric attack or turned over
Watermark information can be still restored in high precision after clapping attack.Preferably, the preset rules are the adjacent watermark unit phase of any two
It cuts.
Further, described that the watermark unit is embedded into file based on default queueing discipline, comprising steps of
The watermark unit is rotated according to preset watermark placement direction, obtains postrotational watermark unit；
Based on default queueing discipline, the postrotational watermark unit is embedded into file.
In practical applications, the watermark placement direction can be preset according to the actual situation, not influence the present invention
Beneficial effect.As shown in figure 5, Fig. 5 is a kind of postrotational watermark unit schematic diagram provided in an embodiment of the present invention, such as can
To be default watermark placement direction for 45 degree of overturning angles, then 45 degree of overturning angle rotations is carried out to the watermark unit, rotated
Watermark unit after 45 degree, in subsequent insertion file, and then to improve the resist geometric attacks ability of watermark, thus further
Improve the anti-interference ability of watermark.As shown in fig. 6, Fig. 6 is a kind of effect for realizing watermark insertion provided in an embodiment of the present invention
Schematic diagram.
Watermark embedding method disclosed by the embodiments of the present invention, by according to the pre-generated watermark patterns that get to obtaining
The pre-generated Xie Erbinsi group moment shape got is filled, and watermark unit is obtained, and then based on default queueing discipline, by institute
Watermark unit is stated to be embedded into file.The full content in file can be covered due to the watermark unit, can be effectively ensured
The safety of the file information, and the watermark unit has self-similarity, can be mentioned according to the localized watermark in the watermark unit
It takes watermark information and restores global watermark, the anti-interference ability of watermark can be effectively improved.
It is described that the base unit is filled out according to the watermark patterns in another preferred embodiment of the invention
It fills, after obtaining watermark unit, further comprises the steps of:
Obtain the setup parameter of the watermark unit；
According to the setup parameter, the property parameters of the watermark unit are adjusted.
It should be noted that before the property parameters adjustment for not carrying out the watermark unit, the attribute of the watermark unit
Parameter is default parameters, and the default parameters can be set according to the actual situation, does not influence beneficial effects of the present invention.
In practical applications, the setup parameter of the watermark unit is set by the user, and the setup parameter of the watermark unit can be
Lightness parameter is also possible to watermark color parameter, can also be the combination or other parameters of above-mentioned two parameter, does not influence
Beneficial effects of the present invention.By taking the setup parameter of the watermark unit is watermark color parameter as an example, it can be basis and get
The watermark unit set by user color parameter, adjust the shade of the watermark unit, as will be described watermark list
The corresponding watermark color of bigger rectangular block is deeper in member, so that it is guaranteed that the readability of file is strong.
It is a kind of structural schematic diagram of watermark embedding device 20 provided in an embodiment of the present invention, described device packet referring to Fig. 7
It includes:
Module 21 is obtained, for obtaining pre-generated base unit and pre-generated watermark patterns；Wherein, the base
Plinth unit is Xie Erbinsi group moment shape；
Watermark unit generation module 22 obtains water for being filled according to the watermark patterns to the base unit
Impression member；
It is embedded in module 23, for based on default queueing discipline, the watermark unit to be embedded into file.
Watermark embedding method of the course of work of the watermark embedding device 20 as described in above-described embodiment, does not go to live in the household of one's in-laws on getting married herein
It states.
Watermark embedding device disclosed by the embodiments of the present invention, by according to the pre-generated watermark patterns that get to obtaining
The pre-generated Xie Erbinsi group moment shape got is filled, and watermark unit is obtained, and then based on default queueing discipline, by institute
Watermark unit is stated to be embedded into file.The full content in file can be covered due to the watermark unit, can be effectively ensured
The safety of the file information, and the watermark unit has self-similarity, can be mentioned according to the localized watermark in the watermark unit
It takes watermark information and restores global watermark, the anti-interference ability of watermark can be effectively improved.
Referring to Fig. 8, one embodiment of the invention additionally provides a kind of watermark embedding apparatus 30, including processor 31, memory
It 32 and is stored in the memory 32 and is configured as the computer program executed by the processor 31, the processor
Watermark embedding method described in any embodiment as above is realized when the 31 execution computer program.Alternatively, the processor 31
The function of each module in watermark embedding device 20 is realized when executing the computer program.
One embodiment of the invention additionally provides a kind of computer readable storage medium, the computer readable storage medium packet
Include the computer program of storage, wherein where controlling the computer readable storage medium in computer program operation
Equipment executes watermark embedding method described in any embodiment as above.
Illustratively, the computer program can be divided into one or more modules, one or more of moulds
Block is stored in the memory 32, and is executed by the processor 31, to complete the present invention.One or more of modules
It can be the series of computation machine program instruction section that can complete specific function, the instruction segment is for describing the computer program
Implementation procedure in the watermark embedding apparatus 30.For example, the computer program, which can be divided into, obtains module, watermark
Unit generation module and insertion module, each module concrete function are as follows: module are obtained, for obtaining pre-generated base unit
With pre-generated watermark patterns；Wherein, the base unit is Xie Erbinsi group moment shape；Watermark unit generation module, is used for
The base unit is filled according to the watermark patterns, obtains watermark unit；It is embedded in module, for based on default arrangement
The watermark unit is embedded into file by rule.
The watermark embedding apparatus 30 can be the meter such as desktop PC, notebook, palm PC and cloud server
Calculate equipment.The watermark embedding apparatus 30 may include, but be not limited only to, processor 31, memory 32.Those skilled in the art can
To understand, the schematic diagram is only the example of watermark embedding apparatus 30, does not constitute the restriction to watermark embedding apparatus 30, can
To include perhaps combining certain components or different components, such as watermark insertion than illustrating more or fewer components
Equipment 30 can also include input-output equipment, network access equipment, bus etc..
Alleged processor 31 can be central processing unit (Central Processing Unit, CPU), can also be
Other general processors, digital signal processor (Digital Signal Processor, DSP), specific integrated circuit
(Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field-
Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic,
Discrete hardware components etc..General processor can be microprocessor or the processor is also possible to any conventional processor
Deng the processor 31 is the control centre of the watermark embedding apparatus 30, utilizes various interfaces and the entire watermark of connection
The various pieces of embedded equipment 30.
The memory 32 can be used for storing the computer program and/or module, and the processor is by operation or holds
Row stores computer program and/or module in the memory, and calls the data being stored in memory, realizes institute
State the various functions of watermark embedding apparatus 30.The memory 32 can mainly include storing program area and storage data area, wherein
Storing program area can application program needed for storage program area, at least one function (for example sound-playing function, image play
Function etc.) etc.；Storage data area, which can be stored, uses created data (such as audio data, phone directory etc.) according to mobile phone
Deng.It can also include nonvolatile memory in addition, memory may include high-speed random access memory, such as hard disk, interior
It deposits, plug-in type hard disk, intelligent memory card (Smart Media Card, SMC), secure digital (Secure Digital, SD) card,
Flash card (Flash Card), at least one disk memory, flush memory device or other volatile solid-state parts.
Wherein, if module/unit that the watermark embedding apparatus 30 integrates is realized in the form of SFU software functional unit simultaneously
When sold or used as an independent product, it can store in a computer readable storage medium.Based on such reason
Solution, the present invention realize all or part of the process in above-described embodiment method, can also instruct correlation by computer program
Hardware complete, the computer program can be stored in a computer readable storage medium, the computer program is in quilt
When processor executes, it can be achieved that the step of above-mentioned each embodiment of the method.Wherein, the computer program includes computer program
Code, the computer program code can be source code form, object identification code form, executable file or certain intermediate forms
Deng.The computer-readable medium may include: any entity or device, record that can carry the computer program code
Medium, USB flash disk, mobile hard disk, magnetic disk, CD, computer storage, read-only memory (ROM, Read-Only Memory), with
Machine access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium etc..
It should be noted that the apparatus embodiments described above are merely exemplary, wherein described be used as separation unit
The unit of explanation may or may not be physically separated, and component shown as a unit can be or can also be with
It is not physical unit, it can it is in one place, or may be distributed over multiple network units.It can be according to actual
It needs that some or all of the modules therein is selected to achieve the purpose of the solution of this embodiment.In addition, device provided by the invention
In embodiment attached drawing, the connection relationship between module indicate between them have communication connection, specifically can be implemented as one or
A plurality of communication bus or signal wire.Those of ordinary skill in the art are without creative efforts, it can understand
And implement.
Watermark embedding apparatus and computer readable storage medium disclosed by the embodiments of the present invention, by pre- according to getting
The watermark patterns first generated are filled the pre-generated Xie Erbinsi group moment shape got, obtain watermark unit, in turn
Based on default queueing discipline, the watermark unit is embedded into file.Since the watermark unit can cover in file
Full content, the safety of the file information can be effectively ensured, and the watermark unit has self-similarity, can be according to the water
Localized watermark in impression member extracts watermark information and restores global watermark, can effectively improve the anti-interference ability of watermark.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (10)
1. a kind of watermark embedding method, which is characterized in that comprising steps of
Obtain pre-generated base unit and pre-generated watermark patterns；Wherein, the base unit is Xie Erbinsiji
Rectangle；
The base unit is filled according to the watermark patterns, obtains watermark unit；
Based on default queueing discipline, the watermark unit is embedded into file.
2. watermark embedding method as described in claim 1, which is characterized in that the base unit generates as follows:
Based on preset minimum rectangle block size, predetermined rectangle is handled using recursive algorithm, generates Xie Erbin
This group moment shape, using as the base unit.
3. watermark embedding method as described in claim 1, which is characterized in that the watermark patterns generate as follows:
Obtain pre-generated basic watermark patterns and pre-generated cipher-text information；
The basic watermark patterns are filled according to the cipher-text information, obtain the watermark patterns.
4. watermark embedding method as claimed in claim 3, which is characterized in that it is described according to the cipher-text information to the basis
Watermark patterns are filled, and obtain the watermark patterns, comprising steps of
Based on preset corresponding relationship, graphic element is combined according to the cipher-text information, obtains figure ciphertext；Wherein, institute
State the corresponding relationship that preset corresponding relationship is each character and each graphic element in the cipher-text information；
The basic watermark patterns are filled according to the figure ciphertext, obtain the watermark patterns.
5. watermark embedding method as claimed in claim 4, which is characterized in that it is described according to the figure ciphertext to the basis
Watermark patterns are filled, and obtain the watermark patterns, specifically:
Using depth-first search strategy, the basic watermark patterns are filled according to the figure ciphertext, are obtained described
Watermark patterns.
6. watermark embedding method as described in claim 1, which is characterized in that it is described based on default queueing discipline, by the water
Impression member is embedded into file, comprising steps of
The watermark unit is rotated according to preset watermark placement direction, obtains postrotational watermark unit；
Based on default queueing discipline, the postrotational watermark unit is embedded into file.
7. watermark embedding method as described in claim 1, which is characterized in that it is described according to the watermark patterns to the basis
Unit is filled, and after obtaining watermark unit, is further comprised the steps of:
Obtain the setup parameter of the watermark unit；
According to the setup parameter, the property parameters of the watermark unit are adjusted.
8. a kind of watermark embedding device characterized by comprising
Module is obtained, for obtaining pre-generated base unit and pre-generated watermark patterns；Wherein, the base unit
For Xie Erbinsi group moment shape；
Watermark unit generation module obtains watermark unit for being filled according to the watermark patterns to the base unit；
It is embedded in module, for based on default queueing discipline, the watermark unit to be embedded into file.
9. a kind of watermark embedding apparatus, which is characterized in that including processor, memory and storage in the memory and by
It is configured to the computer program executed by the processor, is realized when the processor executes the computer program as right is wanted
Watermark embedding method described in asking 1 to 7.
10. a kind of computer readable storage medium, which is characterized in that the computer readable storage medium includes the calculating of storage
Machine program, wherein equipment where controlling the computer readable storage medium in computer program operation is executed as weighed
Benefit require 1 to 7 described in watermark embedding method.
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