CN111986065A - Digital watermark embedding method and device - Google Patents

Abstract

The invention discloses a digital watermark embedding method and device. The method includes: acquiring text to be embedded and watermark information, hiding the watermark information through a binarization conversion algorithm, and determining that the hidden watermark information is embedded in the text According to the embedding position, the hidden watermark information is embedded in the text according to the embedding position. Using the above invention, a hidden watermark can be embedded in the text to verify the ownership of the digital product, and the text-type digital product can be protected more effectively.

Description

A digital watermark embedding method and device

technical field

The present invention relates to the technical field of watermark processing, in particular to a method and device for embedding a digital watermark, an electronic device and a storage medium.

Background technique

With the rapid development of the Internet era, digital products are gradually widely disseminated. In order to protect the copyright of digital products, it is usually necessary to add digital watermarks in digital products. Digital watermarks are contained in original digital data (such as text, images, The indelible identification information in audio, video, etc.) is the digital identification embedded in the digital product to verify the ownership of the digital product.

At present, although digital watermarking can be applied to digital products including text, images, audio, and video, because image and video products are more valued for copyright protection, the existing digital watermark embedding technologies are aimed at image and video products. It is not suitable for other types of digital products, and in practical applications, text-type digital products (such as digital books, magazines, contracts, documents, etc.) have more protection value than those of audio, image and video. Therefore, it is necessary to provide a text-based digital watermark embedding method.

SUMMARY OF THE INVENTION

In view of the above problems, the present invention is proposed to provide a digital watermark embedding method and apparatus, electronic device, and storage medium that overcome the above problems or at least partially solve the above problems.

According to one aspect of the present invention, a digital watermark embedding method, the method includes:

Get the text and watermark information to be embedded;

Through a binarization conversion algorithm, the watermark information is hidden;

determining the embedded position where the hidden watermark information is embedded in the text;

According to the embedding position, the hidden watermark information is embedded in the text.

Optionally, encrypt the watermark information through a reversible encryption algorithm, perform binarization processing on the encrypted watermark information, and convert the binarized watermark information according to preset conversion characters.

Optionally, according to a preset text designation position, the embedded position where the hidden watermark information is embedded in the text is determined.

Optionally, the character string in the text is divided according to a preset length of the character string, and the embedding position of the hidden watermark information in the text is determined according to the position of the character string division.

Optionally, a modulo operation is performed on the character string in the text, and according to the modulo, an embedding position of the hidden watermark information is embedded in the text is determined.

Optionally, the method further includes:

Obtaining the text of the watermark information to be extracted, extracting the watermark information from the text of the watermark information to be extracted according to the embedded position, converting the extracted watermark information according to the preset conversion characters, and converting the converted watermark information Binarization processing is performed, and the binarized watermark information is decrypted through the reversible encryption algorithm.

According to another aspect of the present invention, a digital watermark embedding apparatus is provided, the apparatus comprising:

The acquisition module is used to acquire the text and watermark information to be embedded;

a hiding module, used for hiding the watermark information through a binarization conversion algorithm;

A determining module, for determining the embedded position of the hidden watermark information embedded in the text;

an embedding module, configured to embed the hidden watermark information in the text according to the embedding position.

Optionally, the hiding module is specifically configured to encrypt the watermark information through a reversible encryption algorithm, perform binarization processing on the encrypted watermark information, and perform binarization processing on the binarized watermark information according to a preset conversion character. convert.

Optionally, the determining module is specifically configured to, according to a preset text designation position, determine an embedding position where the hidden watermark information is embedded in the text.

Optionally, the determining module is specifically configured to, according to a preset string length, divide the character string in the text, and determine the embedded position where the hidden watermark information is embedded in the text according to the position of the character string division. .

Optionally, the determining module is specifically configured to perform a modulo operation on the character string in the text, and determine the embedding position where the hidden watermark information is embedded in the text according to the modulo.

Optionally, the device further includes:

The extraction module is used for acquiring the text of the watermark information to be extracted, extracting the watermark information from the text of the watermark information to be extracted according to the embedded position, and converting the extracted watermark information according to the preset conversion characters, The converted watermark information is binarized, and the binarized watermark information is decrypted by the reversible encryption algorithm.

According to another aspect of the present invention, an electronic device is provided, comprising: a processor, a memory, a communication interface, and a communication bus, and the processor, the memory, and the communication interface can communicate with each other through the communication bus. communication;

The memory is used to store at least one executable instruction, and the executable instruction causes the processor to perform the following operations:

Get the text and watermark information to be embedded;

Through a binarization conversion algorithm, the watermark information is hidden;

determining the embedded position where the hidden watermark information is embedded in the text;

According to the embedding position, the hidden watermark information is embedded in the text.

According to yet another aspect of the present invention, a storage medium is provided, wherein at least one executable instruction is stored in the storage medium, and the executable instruction causes a processor to perform the following operations:

Get the text and watermark information to be embedded;

Through a binarization conversion algorithm, the watermark information is hidden;

determining the embedded position where the hidden watermark information is embedded in the text;

According to the embedding position, the hidden watermark information is embedded in the text.

According to the method and device for embedding a digital watermark provided by the present invention, the method includes: acquiring the text to be embedded and watermark information, hiding the watermark information through a binarization conversion algorithm, and determining whether the hidden watermark information is embedded in the text. An embedding position, according to the embedding position, the hidden watermark information is embedded in the text. Using the above invention, a hidden watermark can be embedded in the text to verify the ownership of the digital product, and the text-type digital product can be protected more effectively.

The above description is only an overview of the technical solutions of the present invention, in order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand , the following specific embodiments of the present invention are given.

Description of drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are for the purpose of illustrating preferred embodiments only and are not to be considered limiting of the invention. Also, the same components are denoted by the same reference numerals throughout the drawings. In the attached image:

1 shows a flowchart of a method for embedding a digital watermark according to an embodiment of the present invention;

Fig. 2 shows the apparatus structure diagram of digital watermark embedding according to an embodiment of the present invention;

FIG. 3 shows a schematic structural diagram of an electronic device according to an embodiment of the present invention.

Detailed ways

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be more thoroughly understood, and will fully convey the scope of the present disclosure to those skilled in the art.

FIG. 1 shows a flowchart of a method for embedding a digital watermark according to an embodiment of the present invention. As shown in Figure 1, the method includes the following steps:

S101: Acquire text and watermark information to be embedded.

In practical applications, since text-type digital products (eg, digital books, magazines, contracts, documents, etc.) have more protection value than those of audio, image, and video, in the embodiment of this specification, it is necessary to protect text-type digital products Digital products are protected and the ownership of digital products is protected.

Because in order to realize the copyright protection of digital products, it is usually necessary to add digital watermarks in digital products. Digital watermarks are irremovable identification information contained in original digital data (such as text, images, audio, video, etc.) The digital identification in the digital product is used to verify the ownership of the digital product. Therefore, in the embodiment of this specification, a digital product of text type can be protected by embedding a digital watermark into the text.

Further, in the process of embedding the digital watermark into the text in the embodiments of the present specification, it is first necessary to obtain the text to be embedded and the watermark information.

It should be noted here that the watermark information may be determined according to requirements, and may include the author of the text, and may also include one or more personalized information such as the time of the text.

S102: Hide the watermark information through a binarization conversion algorithm.

In order to increase the confidentiality of the watermark information embedded in the text and prevent the embedded watermark information from being known to others, in the embodiment of this specification, it is necessary to hide the watermark information to be embedded through a binary conversion algorithm.

Further, the embodiment of this specification provides an implementation manner of hiding the watermark information to be embedded through a binarization conversion algorithm, as follows:

The watermark information is encrypted by a reversible encryption algorithm, the encrypted watermark information is subjected to binarization processing, and the binarized watermark information is converted according to a preset conversion character.

It should be noted here that, in practical applications, after the watermark information to be embedded is embedded in the text, the watermark information embedded in the text may be extracted. Therefore, in the embodiments of this specification, it is necessary to use a reversible Encryption algorithm to encrypt watermark information, such as Data Encryption Standard Algorithm, Advanced Encryption Standard Algorithm and Asymmetric Encryption Algorithm. Moreover, performing binarization processing on the encrypted watermark information means that the characters contained in the encrypted watermark information are represented by binarization (for example, 0 and 1), which is different from encrypting the watermark information only by the reversible encryption algorithm. more confidential.

In addition, the preset conversion character can be set according to requirements, that is, for 0 or 1, a conversion character is preset, that is, 0 or 1 is finally represented by the conversion character.

For example, assuming that the watermark information to be embedded in the text is: Author: Zhang San, Time: 2019/03/26, encrypt the watermark information through a reversible encryption algorithm, and obtain the following string: 5L2c6ICF77ya5byg5LiJ77yM5pe26Ze077yaMjAxOS8wMy8yNg==

The encrypted watermark information is then binarized to obtain the following string:

110101 1001100 110010 1100011 110110 1001001 1000011 1000110 110111110111 1111001 1100001 110101 1100010 1111001 1100111 110101 1001100 11010011001010 110111 110111 1111001 1001101 110101 1110000 1100101 110010 1101101011010 1100101 110000 110111 110111 1111001 1100001 1001101 1101010 10000011111000 1001111 1010011 111000 1110111 1001101 1111001 111000 1111001 10011101100111 111101 111101

Finally, convert the binarized watermark information according to the preset conversion characters, assuming that the preset conversion characters are: \u200e is used to represent the watermark separator; \u200b is used to represent 1; \u200c is used to represent 0; \u200d is used to represent spaces, resulting in the following string:

\u200e\u200b\u200b\u200c\u200b\u200c\u200b\u200d\u200b\u200c\u200c\u200b\u200b\u200c\u200c\u200d\u200b\u200b\u200c\u200c\u200b\u200c\u200d\u200b\u200b \u200c\u200c\u200c\u200b\u200b\u200d\u200b\u200b\u200c\u200b\u200b\u200c\u200d\u200b\u200c\u200c\u200b\u200c\u200c\u200b\u200d\u200b\u200c\u200c\u200c \u200c\u200b\u200b\u200d\u200b\u200c\u200c\u200c\u200b\u200b\u200c\u200d\u200b\u200b\u200c\u200b\u200b\u200b\u200d\u200b\u200b\u200c\u200b\u200b\u200b \u200d\u200b\u200b\u200b\u200b\u200c\u200c\u200b\u200d\u200b\u200b\u200c\u200c\u200c\u200c\u200b\u200d\u200b\u200b\u200c\u200b\u200c\u200b\u200d\u200b \u200b\u200c\u200c\u200c\u200b\u200c\u200d\u200b\u200b\u200b\u200b\u200c\u200c\u200b\u200d\u200b\u200b\u200c\u200c\u200b\u200b\u200b\u200d\u200b\u200b \u200c\u200b\u200c\u200b\u200d\u200b\u200c\u200c\u200b\u200b\u200c\u200c\u200d\u200b\u200b\u200c\u200b\u200c\u200c\u200b\u200d\u200b\u200c\u200c\u200b \u200c\u200b\u200c\u200d\u200b\u200b\u200c\u200b\u200b\u200b\u200d\u200b\u200b\u200c\u200b\u200b\u20 0b\u200d\u200b\u200b\u200b\u200b\u200c\u200c\u200b\u200d\u200b\u200c\u200c\u200b\u200b\u200c\u200b\u200d\u2000b\u200b\u20b\u200c20u2 u200b\u200b\u200b\u200c\u200c\u200c\u200c\u200d\u200b\u200b\u200c\u200c\u200b\u200c\u200b\u200d\u200b\u200b\u200c\u200c\u200b\u200c\u200d\u200b\u200b\ u200c\u200b\u200b\u200c\u200d\u200b\u200c\u200b\u200b\u200c\u200b\u200c\u200d\u200b\u200b\u200c\u200c\u200b\u200c\u200b\u200d\u200b\u200b\u200c\u200c\ u200c\u200c\u200d\u200b\u200b\u200c\u200b\u200b\u200b\u200d\u200b\u200b\u200c\u200b\u200b\u200b\u200d\u200b\u200b\u200b\u200b\u200c\u200c\u200b\u200d\ u200b\u200b\u200c\u200c\u200c\u200c\u200b\u200d\u200b\u200c\u200c\u200b\u200b\u200c\u200b\u200d\u200b\u200b\u200c\u200b\u200c\u200b\u200c\u200d\u200b\ u200c\u200c\u200c\u200c\u200c\u200b\u200d\u200b\u200b\u200b\u200b\u200c\u200c\u200c\u200d\u200b\u200c\u200c\u200b\u200b\u200b\u200b\u200d\u200b\u200c\ u200b\u200c\u200c\u200b\u200b\u200d\u200b\u200b\u200b\u200c\u200c\u200c\u200d\u200b\u200b\u200b\u200c\u 200b\u200b\u200b\u200d\u200b\u200c\u200c\u200b\u200b\u200c\u200b\u200d\u200b\u200b\u200b\u200b\u200c\u200c\u200b\u200d\u200b\u200b\u200b\u200c\u200c\ u200c\u200d\u200b\u200b\u200b\u200b\u200c\u200c\u200b\u200d\u200b\u200c\u200c\u200b\u200b\u200b\u200c\u200d\u200b\u200b\u200c\u200c\u200b\u200b\u200b\ u200d\u200b\u200b\u200b\u200b\u200c\u200b\u200d\u200b\u200b\u200b\u200b\u200c\u200b

S103: Determine the embedded position where the hidden watermark information is embedded in the text.

S104: Embed the hidden watermark information in the text according to the embedding position.

Further, since it is necessary to know where the watermark information is embedded in the text in practical applications, in the embodiment of this specification, after the watermark information to be embedded is converted into a binary value to obtain the hidden watermark information, it is necessary to An embedding position where the hidden watermark information is embedded in the text is determined.

It should be noted here that the embodiments of this specification provide three implementation manners for determining the embedding position where the hidden watermark information is embedded in the text, as follows:

The first implementation manner: according to a preset text designation position, determine the embedded position where the hidden watermark information is embedded in the text.

It should be noted here that the preset text designation position may be the beginning position of the text, or the end position of the text, and certainly may be any position within the text.

The second embodiment: according to the preset length of the character string, the character string in the text is divided, and according to the position of the character string division, the embedded position of the hidden watermark information is determined to be embedded in the text.

It should be noted here that dividing the character string in the text according to the preset character string length refers to dividing the character string in the text into several substrings according to the preset character string length, and then dividing the character string in the text into several substrings according to the preset character string length. The number of strings, the watermark information to be embedded is divided into sub-watermark information with the same number of sub-strings, and at least one sub-watermark information is embedded at the split position between the sub-strings.

The third implementation manner: perform a modulo operation on the character string in the text, and determine the embedding position where the hidden watermark information is embedded in the text according to the modulo.

It should be noted here that, according to the modulus, the embedded position where the hidden watermark information is embedded in the text is determined. Specifically, the character corresponding to the modulus can be found in the character string in the text, and embedded before and after the character. Hidden watermark information.

The above three implementations for determining the embedding position of the hidden watermark information into the text provided in the embodiments of the present specification are not limited to the above three implementations, and the selected implementations only need to follow the following principles: The embedded position of the hidden watermark information embedded in the text must be stable enough, and it cannot be unavailable because the text content changes; the distribution is uniform, which can ensure that the watermark information is stored as loosely as possible, and improve the difficulty of watermark extraction; There must be enough space to store the watermark information.

Finally, after determining the embedding position where the hidden watermark information is embedded in the text, the hidden watermark information is embedded in the text according to the embedding position.

Through the above method, a hidden watermark can be embedded in the text to verify the ownership of the digital product, and the text-type digital product can be protected more effectively.

In practical applications, it may be necessary to extract the watermark information in the text in order to know the attribution of the text to which the watermark information has been added, that is, who owns the text to which the watermark information has been added. In the example, an implementation manner of extracting the watermark information in the text is provided, as follows:

Obtaining the text of the watermark information to be extracted, extracting the watermark information from the text of the watermark information to be extracted according to the embedded position, converting the extracted watermark information according to the preset conversion characters, and converting the converted watermark information Binarization processing is performed, and the binarized watermark information is decrypted through the reversible encryption algorithm.

What needs to be explained here is that it can be seen from which process the watermark information is embedded into the text. Subsequently, when extracting the watermark information in the text, it is extracted through the reverse process. In the embodiment of this specification, Extracting the watermark information in the text is also called treason tracking.

The above is the method for embedding a digital watermark provided by the embodiment of the present application. Based on this, the embodiment of the present application provides a device for embedding a digital watermark. As shown in FIG. 2 , the device includes:

Obtaining module 201, for obtaining the text and watermark information to be embedded;

a hiding module 202, configured to hide the watermark information through a binarization conversion algorithm;

A determination module 203, configured to determine the embedded position where the hidden watermark information is embedded in the text;

The embedding module 204 is configured to embed the hidden watermark information in the text according to the embedding position.

The hiding module 202 is specifically configured to encrypt the watermark information through a reversible encryption algorithm, perform binarization processing on the encrypted watermark information, and convert the binarized watermark information according to preset conversion characters.

The determining module 203 is specifically configured to, according to a preset text designation position, determine an embedding position where the hidden watermark information is embedded in the text.

The determining module 203 is specifically configured to divide the character string in the text according to the preset length of the character string, and determine the embedding position where the hidden watermark information is embedded in the text according to the position of the character string division.

The determining module 203 is specifically configured to perform a modulo operation on the character string in the text, and determine the embedded position where the hidden watermark information is embedded in the text according to the modulo.

The device also includes:

The extraction module 205 is configured to obtain the text of the watermark information to be extracted, extract the watermark information from the text of the watermark information to be extracted according to the embedded position, and convert the extracted watermark information according to the preset conversion characters, Binarization is performed on the converted watermark information, and the binarized watermark information is decrypted through the reversible encryption algorithm.

Embodiments of the present application further provide a non-volatile computer storage medium, where the computer storage medium stores at least one executable instruction, and the computer executable instruction can execute the digital watermark embedding method in any of the above method embodiments.

FIG. 3 shows a schematic structural diagram of an electronic device according to an embodiment of the present invention. The specific embodiment of the present invention does not limit the specific implementation of the electronic device.

As shown in FIG. 3 , the electronic device may include: a processor (processor) 302 , a communication interface (Communications Interface) 304 , a memory (memory) 306 , and a communication bus 308 .

in:

The processor 302 , the communication interface 304 , and the memory 306 communicate with each other through the communication bus 308 .

The communication interface 304 is used for communicating with network elements of other devices such as clients or other servers.

The processor 302 is configured to execute the program 310, and specifically may execute the relevant steps in the above embodiments of the digital watermark embedding method.

Specifically, the program 310 may include program code including computer operation instructions.

The processor 302 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present invention. The one or more processors included in the electronic device may be the same type of processors, such as one or more CPUs; or may be different types of processors, such as one or more CPUs and one or more ASICs.

The memory 306 is used to store the program 310 . Memory 306 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk memory.

The program 310 can specifically be used to cause the processor 302 to perform the following operations:

Get the text and watermark information to be embedded;

Through a binarization conversion algorithm, the watermark information is hidden;

determining the embedded position where the hidden watermark information is embedded in the text;

According to the embedding position, the hidden watermark information is embedded in the text.

Optionally, program 310 may also be used to cause processor 302 to perform the following operations:

Encrypt the watermark information by a reversible encryption algorithm;

Binarize the encrypted watermark information;

Convert the binarized watermark information according to the preset conversion characters.

Optionally, program 310 may also be used to cause processor 302 to perform the following operations:

According to a preset text designation position, determine the embedded position where the hidden watermark information is embedded in the text.

Optionally, program 310 may also be used to cause processor 302 to perform the following operations:

According to the preset string length, the string in the text is divided;

According to the position where the character string is split, the embedded position where the hidden watermark information is embedded in the text is determined.

Optionally, program 310 may also be used to cause processor 302 to perform the following operations:

performing a modulo operation on the character string in the text;

According to the modulus, the embedded position where the hidden watermark information is embedded in the text is determined.

Optionally, program 310 may also be used to cause processor 302 to perform the following operations:

Obtain the text of the watermark information to be extracted;

According to the embedded position, extract watermark information from the text of the to-be-extracted watermark information;

Convert the extracted watermark information according to the preset conversion characters;

Binarize the converted watermark information;

The binarized watermark information is decrypted through the reversible encryption algorithm.

The algorithms and displays provided herein are not inherently related to any particular computer, virtual system, or other device. Various general-purpose systems can also be used with teaching based on this. The structure required to construct such a system is apparent from the above description. Furthermore, the present invention is not directed to any particular programming language. It is to be understood that various programming languages may be used to implement the inventions described herein, and that the descriptions of specific languages above are intended to disclose the best mode for carrying out the invention.

In the description provided herein, numerous specific details are set forth. It will be understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Similarly, it is to be understood that in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together into a single embodiment, figure, or its description. This disclosure, however, should not be construed as reflecting an intention that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the Detailed Description are hereby expressly incorporated into this Detailed Description, with each claim standing on its own as a separate embodiment of this invention.

Those skilled in the art will understand that the modules in the device in the embodiment can be adaptively changed and arranged in one or more devices different from the embodiment. The modules or units or components in the embodiments may be combined into one module or unit or component, and further they may be divided into multiple sub-modules or sub-units or sub-assemblies. All features disclosed in this specification (including accompanying claims, abstract and drawings) and any method so disclosed may be employed in any combination, unless at least some of such features and/or procedures or elements are mutually exclusive. All processes or units of equipment are combined. Each feature disclosed in this specification (including accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.

Furthermore, those skilled in the art will appreciate that although some of the embodiments described herein include certain features, but not others, included in other embodiments, that combinations of features of different embodiments are intended to be within the scope of the invention within and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.

Various component embodiments of the present invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art should understand that, in practice, a microprocessor or a digital signal processor (DSP) may be used to implement some or all of some or all of some or all of the components in the task scheduling apparatus for a cleaning robot according to an embodiment of the present invention Function. The present invention can also be implemented as apparatus or apparatus programs (eg, computer programs and computer program products) for performing part or all of the methods described herein. Such a program implementing the present invention may be stored on a computer-readable medium, or may be in the form of one or more signals. Such signals may be downloaded from Internet sites, or provided on carrier signals, or in any other form.

It should be noted that the above-described embodiments illustrate rather than limit the invention, and that alternative embodiments may be devised by those skilled in the art without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, and third, etc. do not denote any order. These words can be interpreted as names.

The invention also discloses A7, a digital watermark embedding device, comprising:

The acquisition module is used to acquire the text and watermark information to be embedded;

a hiding module, used for hiding the watermark information through a binarization conversion algorithm;

A determining module, for determining the embedded position of the hidden watermark information embedded in the text;

an embedding module, configured to embed the hidden watermark information in the text according to the embedding position.

A8. The device according to claim A7, wherein the concealment module is specifically configured to encrypt the watermark information through a reversible encryption algorithm, perform binarization processing on the encrypted watermark information, and perform binary processing on the two The valued watermark information is converted.

A9. The apparatus according to claim A7, wherein the determining module is specifically configured to, according to a preset text designation position, determine an embedding position where the hidden watermark information is embedded in the text.

A10. The apparatus according to claim A7, wherein the determining module is specifically configured to, according to a preset length of the character string, divide the character string in the text, and determine the hidden watermark information according to the position of the character string division Embed position to embed the text.

A11. The apparatus according to claim A7, wherein the determining module is specifically configured to perform a modulo operation on a character string in the text, and determine the embedded position where the hidden watermark information is embedded in the text according to the modulo .

A12. The apparatus of claim A8, further comprising:

The extraction module is used for acquiring the text of the watermark information to be extracted, extracting the watermark information from the text of the watermark information to be extracted according to the embedded position, and converting the extracted watermark information according to the preset conversion characters, The converted watermark information is binarized, and the binarized watermark information is decrypted by the reversible encryption algorithm.

Claims (10)

1. A digital watermark embedding method, comprising:

acquiring a text to be embedded and watermark information;

hiding the watermark information through a binarization conversion algorithm;

determining an embedding position of the hidden watermark information embedded into the text;

and embedding the hidden watermark information in the text according to the embedding position.

2. The method according to claim 1, hiding the watermark information through a binarization conversion algorithm, specifically comprising:

encrypting the watermark information by a reversible encryption algorithm;

carrying out binarization processing on the encrypted watermark information;

and converting the binarized watermark information according to a preset conversion character.

3. The method according to claim 1, wherein determining an embedding position where the hidden watermark information is embedded in the text specifically includes:

And determining the embedding position of the hidden watermark information embedded into the text according to the preset specified position of the text.

4. The method according to claim 1, wherein determining an embedding position where the hidden watermark information is embedded in the text specifically includes:

dividing character strings in the text according to a preset character string length;

and determining the embedding position of the hidden watermark information embedded into the text according to the character string segmentation position.

5. The method according to claim 1, wherein determining an embedding position where the hidden watermark information is embedded in the text specifically includes:

performing modular operation on the character strings in the text;

and determining the embedding position of the hidden watermark information embedded into the text according to the modulus.

6. The method of claim 2, further comprising:

acquiring a text of watermark information to be extracted;

extracting watermark information from the text of the watermark information to be extracted according to the embedding position;

converting the extracted watermark information according to a preset conversion character;

carrying out binarization processing on the converted watermark information;

and decrypting the watermark information after the binarization processing through the reversible encryption algorithm.

7. A digital watermark embedding apparatus, comprising:

the acquisition module is used for acquiring the text to be embedded and the watermark information;

the hiding module is used for hiding the watermark information through a binarization conversion algorithm;

the determining module is used for determining the embedding position of the hidden watermark information embedded into the text;

and the embedding module is used for embedding the hidden watermark information into the text according to the embedding position.

8. The apparatus according to claim 7, wherein the hiding module is specifically configured to encrypt the watermark information through a reversible encryption algorithm, perform binarization processing on the encrypted watermark information, and convert the binarized watermark information according to a preset conversion character.

9. An electronic device, comprising: the system comprises a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface complete mutual communication through the communication bus;

the memory is used for storing at least one executable instruction, and the executable instruction causes the processor to execute the corresponding operation of the digital watermark embedding method according to any one of claims 1-6.

10. A computer storage medium having at least one executable instruction stored therein, the executable instruction causing a processor to perform operations corresponding to the digital watermark embedding method according to any one of claims 1 to 6.

Images