CN111815499A - A kind of watermark deletion method and device - Google Patents

Abstract

The embodiment of the invention provides a watermark deleting method and a watermark deleting device, which relate to the technical field of data processing, wherein the method comprises the following steps: the method comprises the steps of identifying pictures in a file page, determining pictures which accord with a preset distribution rule in the identified pictures as watermarks, and then deleting the determined watermarks. When the scheme provided by the embodiment of the invention is applied to delete the watermark in the file, the pictures which accord with the distribution rule in the file page are used as the watermark to delete, so that the coverage of the deleted watermark can be improved.

Description

A kind of watermark deletion method and device

technical field

The invention relates to the technical field of data processing, and in particular, to a watermark deletion method and device.

Background technique

When a user writes a file through various file processing software, a watermark is usually added to the file to protect the copyright of the file. In practical applications, the existence of the watermark will cause inconvenience to the use of the file. Therefore, in some application scenarios, the watermark in the file needs to be deleted.

In the prior art, when deleting a watermark in a file, generally, the watermark tag contained in the file is first identified, and then the watermark corresponding to the identified watermark tag is deleted. Although the watermark with the watermark tag in the file can be deleted by applying the above method, there may also be a watermark without the watermark tag in the file, and the watermark without the watermark tag in the file cannot be deleted by using the above method. That is, when the watermark in the file is deleted by the above method, the coverage of the deleted watermark is low.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present invention is to provide a watermark deletion method and apparatus, so as to improve the coverage of the deleted watermark when deleting the watermark in the file.

In a first aspect, an embodiment of the present invention provides a watermark deletion method, the method includes:

Identify pictures in document pages;

Determine the pictures that conform to the preset distribution law in the identified pictures as watermarks;

Remove the watermark.

In an embodiment of the present invention, the pictures that conform to the preset distribution law among the identified pictures, as watermarks, include:

Determine the pictures that are the same among the identified pictures and are regularly distributed in the document page as watermarks.

In an embodiment of the present invention, the pictures that are the same among the identified pictures and are regularly distributed in the document page, as watermarks, include:

Among the identified pictures, the same pictures with the same distance in the horizontal direction and the same distance in the vertical direction are determined as watermarks.

In an embodiment of the present invention, the pictures that conform to the preset distribution law among the identified pictures, as watermarks, include:

From the identified pictures, pictures that are regularly distributed among consecutive pages containing the document pages are obtained as watermarks.

In an embodiment of the present invention, the pictures that are regularly distributed among the consecutive pages including the document pages are obtained from the identified pictures, as watermarks, including:

From the identified pictures, pictures distributed at the same position in each successive page including the document page are obtained as watermarks.

In a second aspect, an embodiment of the present invention provides a watermark deletion device, the device comprising:

The picture recognition module is used to identify the pictures in the document page;

The watermark determination module is used to determine the pictures that conform to the preset distribution law in the identified pictures as watermarks;

A watermark deletion module for deleting the watermark.

In an embodiment of the present invention, the watermark determination module is specifically used for:

Determine the pictures that are the same among the identified pictures and are regularly distributed in the document page as watermarks.

In an embodiment of the present invention, the watermark determination module is specifically used for:

Among the identified pictures, the same pictures with the same distance in the horizontal direction and the same distance in the vertical direction are determined as watermarks.

In an embodiment of the present invention, the watermark determination module is specifically used for:

From the identified pictures, pictures that are regularly distributed among consecutive pages containing the document pages are obtained as watermarks.

In an embodiment of the present invention, the watermark determination module is specifically used for:

From the identified pictures, pictures distributed at the same position in each successive page including the document page are obtained as watermarks.

In a third aspect, an embodiment of the present invention provides an electronic device, including a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus;

memory for storing computer programs;

The processor is configured to implement any one of the method steps described in the first aspect above when executing the program stored in the memory.

In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, any one of the above-mentioned first aspect is implemented. method steps.

In a fifth aspect, an embodiment of the present invention further provides a computer program product including instructions, which, when executed on a computer, causes the computer to execute the method steps described in any one of the above-mentioned first aspect.

As can be seen from the above, when applying the solution provided by the embodiment of the present invention to delete the watermark in the file, the pictures that conform to the distribution law in the file page are deleted as the watermark, so that even if the watermark in the file does not have a watermark label, as long as it is in the file. If the watermark is presented regularly, it can also be deleted. Therefore, when the watermark in the file is deleted by applying the solution provided by the embodiment of the present application, the coverage of the deleted watermark can be improved.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

1 is a schematic flowchart of a watermark deletion method according to an embodiment of the present invention;

2 is a schematic diagram of a page provided by an embodiment of the present invention;

3 is another schematic diagram of a page provided by an embodiment of the present invention;

4 is a schematic diagram of still another page provided by an embodiment of the present invention;

FIG. 5 is another schematic diagram of a page provided by an embodiment of the present invention;

FIG. 6 is another schematic diagram of a page provided by an embodiment of the present invention;

7 is a schematic structural diagram of a watermark deletion apparatus provided by an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Embodiments of the present invention provide a method and apparatus for deleting a watermark, which will be described in detail below.

First, the execution body of the watermark deletion scheme provided by the embodiment of the present invention is described.

The above-mentioned execution subject may be a software client. For example, it may be a software client for file processing such as WPS, Word, and PDF, or a software client for image processing.

In addition, the above-mentioned execution body may also be an electronic device running the above-mentioned software client. For example, desktop computers, laptops, tablets, smartphones, etc.

The watermark deletion method provided by the embodiment of the present invention will be described below through specific embodiments.

Referring to FIG. 1, FIG. 1 is a schematic flowchart of a method for deleting a watermark according to an embodiment of the present invention. The above method includes the following steps 101-103.

Step 101, identify the pictures in the file page.

In an implementation manner of the present invention, the pictures in the file page may be identified after the watermark with the watermark label in the file page is deleted.

Specifically, the above-mentioned file page may be a page designated by a user in the file, or a page with a preset page number in the file, or a page randomly selected from the file, which is not limited in this application.

Specifically, when recognizing a picture in a document page, it can be recognized line by line from the upper left corner of the page along the horizontal direction to the right, or it can be recognized from the upper left corner of the page along the vertical direction and column by column, or it can be preset in the page. The position of , is the initial position, and is identified in turn to the four sides, which is not limited in this application.

Step 102: Determine a picture that conforms to a preset distribution rule among the identified pictures as a watermark.

In an implementation manner of the present invention, pictures that are the same among the identified pictures and are regularly distributed in the file page can be determined as watermarks. That is, the watermarks in a single page are distributed regularly. In this case, the watermark within the page can be referred to as a tiled watermark.

Specifically, the above-mentioned regular distribution in the document page may be that the pictures in the document page are distributed along a straight line, such as the pictures are distributed along a horizontal line, a vertical line or an oblique line, or the pictures are distributed along a preset graph, such as Pictures are distributed along a circle, along a rectangle, along a triangle, etc.

For example, referring to Fig. 2, a picture is represented by a rectangular box with a watermark character, the pictures shown are the same, and are distributed along a diagonal line in the page, that is to say, they are distributed regularly in the document page, then the picture in the picture can be considered as Tile the watermark.

In addition, referring to FIG. 3 , each of the same pictures in the figure is distributed along a rectangle in the file page, so it can also be considered that the picture in the figure is a tiled watermark.

When determining the watermark, in addition to the graphic consideration formed from the distribution of pictures in the document page, the distance between pictures can also be considered. In view of this, in an embodiment of the present invention, from the identified pictures, the same pictures with the same distance in the horizontal direction and the same distance in the vertical direction can be determined as watermarks.

Specifically, referring to FIG. 4 , in the document page, a rectangular box with a watermark character represents the same pictures, and the same pictures are arranged in the form of a matrix, the distances between adjacent pictures in each row are equal, and the If the distances between adjacent pictures are equal, the above pictures are considered to be tiled watermarks.

In another implementation manner of the present invention, pictures that are regularly distributed among consecutive pages including the above-mentioned document pages may be obtained from the identified pictures as watermarks. That is, the watermarks in the file are watermarks that are regularly distributed between successive pages. Compared with the above tiled watermark, the watermark in this case can be called a non-tiled watermark.

The above-mentioned continuous page may be a continuous page formed by the above-mentioned document page and a page adjacent to the left side of the above-mentioned document page, or a continuous page formed by the above-mentioned document page and a page adjacent to the right side of the above-mentioned document page, or may be The above document page, the page adjacent to the left side of the above document page, and the page adjacent to the right side of the above document page form a continuous page.

Specifically, the above-mentioned regular distribution between consecutive pages may be the distribution of pictures in the same position between consecutive pages, for example, the above-mentioned same position may be the page center, the upper left corner, the lower right corner of each page, and so on.

The above-mentioned regular distribution among the consecutive pages may also mean that the pictures have regular positional distribution among the consecutive pages. For example, the position of the picture in each of the successive pages forms a straight line, forms a specific figure, and so on.

Referring to Figure 5, the picture is represented by a rectangular box with a watermark character, the pictures are the same, and the positions in each consecutive page form a straight line, so it can be considered that the positions distributed between consecutive pages have the same law, then you can Consider the image as a non-tiled watermark.

In an embodiment of the present invention, pictures distributed at the same position in each continuous page including the above-mentioned document pages can be obtained from the identified pictures as watermarks.

Specifically, referring to FIG. 6 , two consecutive pages are shown. The page on the left includes picture A and picture B, and the page on the right includes picture A and picture C. It can be seen that both pages include picture A. Suppose the picture The position of A in the two pages is the same. Therefore, for the left page in Figure 6, the picture A in it also exists in the same position in the consecutive pages on the right side of the page. Therefore, the picture A is the watermark in the page. . For the right page in FIG. 6 , the picture A also exists in the same position on the left consecutive pages of the page, so the picture A is also the watermark of the page.

Step 103, delete the above watermark.

Specifically, for a certain tiled watermark, all tiled watermarks in the above-mentioned pages can be deleted, and according to the distribution law of tiled watermarks, the pictures at the corresponding positions in other pages of the file can be considered as tiled watermarks, so that the The tile watermarks identified in other pages of the file are deleted.

Similarly, for non-tiling watermarks, all non-tiling watermarks in the above pages can be deleted. According to the distribution law of non-tiling watermarks, the pictures at the corresponding positions in the consecutive pages of the file can be considered as non-tiling watermarks, so that the Deletion is performed on identified non-tiled watermarks within consecutive pages of the file.

Another implementation manner of the present invention is that, for pictures that are not distributed regularly, the watermark cannot be identified but can only be determined by the user's naked eye, and the picture selected by the user is obtained as the watermark and deleted.

It can be seen that when the solution provided by the embodiment of the present invention is applied to delete the watermark in the file, the pictures that conform to the distribution rules in the file page are deleted as the watermark, so that even if the watermark in the file does not have a watermark label, as long as the watermark in the file is regular It can also be deleted. Therefore, when the watermark in the file is deleted by applying the solution provided by the embodiment of the present application, the coverage of the deleted watermark can be improved.

Corresponding to the above watermark deletion method, an embodiment of the present invention further provides a watermark deletion apparatus.

FIG. 7 is a watermark deletion device provided by an embodiment of the present invention, and the device includes:

The picture identification module 701 is used for identifying pictures in the document page;

A watermark determination module 702, configured to determine a picture that conforms to a preset distribution rule among the identified pictures as a watermark;

The watermark deletion module 703 is used to delete the above watermark.

In an embodiment of the present invention, the above-mentioned watermark determination module 702 is specifically used for:

Determine the pictures that are the same among the identified pictures and are regularly distributed in the above-mentioned document pages as watermarks.

In an implementation manner of the present invention, the above-mentioned watermark determination module 702 is specifically used for:

Among the identified pictures, the same pictures with the same distance in the horizontal direction and the same distance in the vertical direction are determined as watermarks.

In an embodiment of the present invention, the above-mentioned watermark determination module 702 is specifically used for:

From the identified pictures, pictures that are regularly distributed among consecutive pages including the above-mentioned document pages are obtained as watermarks.

In an implementation manner of the present invention, the above-mentioned watermark determination module 702 is specifically used for:

From the identified pictures, pictures distributed at the same position in each successive page including the above-mentioned document pages are obtained as watermarks.

It can be seen that when the device provided by the embodiment of the present invention is used to delete the watermark in the file, the pictures that conform to the distribution law in the file page are deleted as the watermark, so that even if the watermark in the file does not have a watermark label, as long as the watermark in the file is regular It can also be deleted. Therefore, when the watermark in the file is deleted by applying the solution provided by the embodiment of the present application, the coverage of the deleted watermark can be improved.

An embodiment of the present invention further provides an electronic device, as shown in FIG. 8 , including a processor 801 , a communication interface 802 , a memory 803 and a communication bus 804 , wherein the processor 801 , the communication interface 802 , and the memory 803 pass through the communication bus 804 complete communication with each other.

a memory 803 for storing computer programs;

The processor 801 is configured to implement the watermark deletion method provided by the embodiment of the present invention when executing the program stored in the memory 803 .

The communication bus mentioned in the above electronic device may be a peripheral component interconnect standard (Peripheral Component Interconnect, PCI) bus or an Extended Industry Standard Architecture (Extended Industry Standard Architecture, EISA) bus or the like. The communication bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of presentation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus.

The communication interface is used for communication between the above electronic device and other devices.

The memory may include random access memory (Random Access Memory, RAM), and may also include non-volatile memory (Non-Volatile Memory, NVM), such as at least one disk memory. Optionally, the memory may also be at least one storage device located away from the aforementioned processor.

The above-mentioned processor may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU), a network processor (Network Processor, NP), etc.; may also be a digital signal processor (Digital Signal Processing, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

In another embodiment provided by the present invention, a computer-readable storage medium is also provided, and a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, any one of the above watermark deletion methods is implemented A step of.

In yet another embodiment provided by the present invention, there is also provided a computer program product containing instructions, which, when running on a computer, enables the computer to execute any of the watermark deletion methods in the above-mentioned embodiments.

It can be seen that when applying the electronic equipment provided by the above embodiments to delete the watermark, executing the computer program stored in the computer-readable storage medium provided by the above embodiments to delete the watermark, and running the computer program products provided by the above embodiments on the computer. When the watermark is deleted, the pictures in the file page are identified, and the pictures that conform to the preset distribution law among the identified pictures are determined as watermarks, so that the determined watermarks are deleted.

The electronic device, the readable storage medium, and the computer program product provided by the embodiments of the present invention can quickly and accurately implement the watermark deletion method provided by the embodiments of the present invention. Compared with the prior art, when applying the solution provided by the embodiment of the present invention to delete the watermark, the pictures that conform to the distribution law in the file page are deleted as the watermark, so that even if the watermark in the file does not have a watermark label, as long as the watermark is in the file It is regularly presented and can also be deleted. Therefore, when the watermark in the file is deleted by the solution provided by the embodiments of the present application, the coverage of the deleted watermark can be improved.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present invention are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server or data center Transmission to another website site, computer, server, or data center is by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes an integration of one or more available media. The usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), among others.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

Each embodiment in this specification is described in a related manner, and the same and similar parts between the various embodiments may be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the apparatus embodiments, the electronic device embodiments, the computer-readable storage medium embodiments, and the computer program product embodiments, since they are basically similar to the method embodiments, the descriptions are relatively simple, and for relevant details, refer to the method embodiments part of the description.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims (12)

1. A method of watermark deletion, the method comprising:

identifying pictures in a file page;

determining pictures which accord with a preset distribution rule in the identified pictures as watermarks;

and deleting the watermark.

2. The method according to claim 1, wherein the determining, as the watermark, the picture that meets the preset distribution rule in the identified pictures comprises:

and determining the same pictures which are regularly distributed in the file page in the identified pictures as the watermarks.

3. The method according to claim 2, wherein the determining, as the watermark, the pictures that are the same in the identified pictures and regularly distributed in the document page comprises:

and determining the same pictures with equal horizontal direction spacing distance and equal vertical direction spacing distance as the watermarks in the identified pictures.

4. The method according to claim 1 or 2, wherein the determining, as the watermark, the picture that meets the preset distribution rule in the identified pictures comprises:

and obtaining pictures which are regularly distributed among the continuous pages containing the document pages from the identified pictures as watermarks.

5. The method according to claim 4, wherein said obtaining, from the identified pictures, pictures regularly distributed between successive pages containing the document page as watermarks comprises:

and obtaining pictures distributed at the same position in each continuous page containing the file page from the identified pictures as the watermark.

6. An apparatus for deleting a watermark, the apparatus comprising:

the picture identification module is used for identifying pictures in the file page;

the watermark determining module is used for determining pictures which accord with a preset distribution rule in the identified pictures as watermarks;

and the watermark deleting module is used for deleting the watermark.

7. The apparatus of claim 6, wherein the watermark determination module is specifically configured to:

and determining the same pictures which are regularly distributed in the file page in the identified pictures as the watermarks.

8. The apparatus of claim 7, wherein the watermark determination module is specifically configured to:

and determining the same pictures with equal horizontal direction spacing distance and equal vertical direction spacing distance as the watermarks in the identified pictures.

9. The apparatus according to claim 6 or 7, wherein the watermark determining module is specifically configured to:

and obtaining pictures which are regularly distributed among the continuous pages containing the document pages from the identified pictures as watermarks.

10. The apparatus of claim 9, wherein the watermark determination module is specifically configured to:

and obtaining pictures distributed at the same position in each continuous page containing the file page from the identified pictures as the watermark.

11. An electronic device is characterized by comprising a processor, a communication interface, a memory and a communication bus, wherein the processor and the communication interface are used for realizing mutual communication by the memory through the communication bus;

a memory for storing a computer program;

a processor for implementing the method steps of any one of claims 1 to 5 when executing a program stored in the memory.

12. A computer-readable storage medium, characterized in that a computer program is stored in the computer-readable storage medium, which computer program, when being executed by a processor, carries out the method steps of any one of the claims 1-5.

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