WO2018129640A1

WO2018129640A1 - Technology and assembly for storing information in application picture in hidden manner

Info

Publication number: WO2018129640A1
Application number: PCT/CN2017/000578
Authority: WO
Inventors: 王同超
Original assignee: 江苏图码信息科技有限公司
Priority date: 2017-01-11
Filing date: 2017-09-11
Publication date: 2018-07-19
Also published as: CN106780285A

Abstract

A method for storing a great amount of information in a computer application picture in a hidden manner, and a technical assembly for placing and parsing the information. The technical assembly comprises a picture forming component and a picture parsing component. By performing operations in which codes are stored in a hidden manner by using a picture color as a coding unit, a great amount of information or data is stored in a hidden manner on the basis that a memory for a picture is not increased; and the information or the data can be effectively parsed from a picture to which the information is loaded. In-depth information storage and parsing technologies are enhanced on the basis that a structure and a visual sense of the picture are not changed.

Description

A technique and component for storing information in an application image

Technical field

The invention relates to the technical field of computer processing pictures and information storage, in particular to a technology and a component for storing information in a computer application picture.

Background technique

With the rapid development of social information technology, in the field of image processing technology, people have made great progress in the processing and application of pictures. Image information hiding technology is also a very popular image application processing technology. Image hidden information technology, mainly in the unrecognizable scope of human visual organs, using a computer to subtly combine or arrange the binary data of pictures and information, so as to hide information in the picture, so that ordinary people are visually The small changes in the picture cannot be recognized, and the purpose of hiding the information in the picture is achieved.

At present, in the field of computer electronics, there are many technologies that can process texts and files and hide them in pictures, which are applied to the encryption of images and the storage of files. In the current information office or communication, some important information electronic documents and document prints are placed. The important contents and information inside are often sneaked, photographed and copied intentionally and unintentionally, causing privacy leaks and leaking trade secrets. The loss has caused a lot of trouble. Some image hiding techniques are also used in commercial communication, network communication, information encryption and anti-counterfeiting. However, such technical products are mostly additional functions of software, failing to form a single software operating system, resulting in extremely complicated operations. Flexible and inconvenient, this important efficient and low-cost information hiding technology cannot be popularized.

Summary of the invention

Through the technical research on the information such as the hidden text of the picture, the present invention proposes a set of technology and process system for storing information such as text in the application picture, and successfully develops the software component for information entry and solution. The technical component of the set of hidden information includes two parts: a mapter and a mapper, and adopts a hidden coding algorithm in which the picture color is used as a coding unit. The invention effectively realizes the function of hiding information or data in the application picture, and can effectively interpret the hidden information or the data text from the picture loading the information, thereby realizing efficient and reliable information hiding and interpretation. Compared with other hidden technologies, the present invention is in information loading technology. Surgery, information hiding structure, and hidden storage capacity have obvious technological advancement characteristics, as follows:

1 large amount of data storage

The method for hiding information in the picture of the invention is to make regular selection and coverage of the binary data of the picture itself, and on the basis of the information re-implantation, the information extension is at least the original picture itself. Half of the amount of information, which greatly increases the amount of data storage and expands the utilization of image memory.

2 small changes in visual perception before and after the picture

Since the color pixel number of the color image is higher, the color is more true. Human vision cannot distinguish sensitively small differences in image color, and the present invention utilizes visual insensitivity to achieve information implantation based on a slight change in image perception.

3 does not change the memory size of the picture

Since the method for storing information in the present invention uses the last bit of each pixel constituting the picture, the method of bit coverage is used to change the pixel value. First, the hidden information is first converted into a binary data chain, and then read one bit at a time; then the image is bit scanned, and bit coverage is performed to complete the insertion of the information. This makes the picture with the information hidden and the original picture, in the occupied memory space, the same size, that is, the picture after the hidden information, the memory has no increment. In this way, on the basis of the original memory space, the amount of information or data loading is greatly expanded by covering the pixel color data bits.

Basic principles and implementation

In computer systems, the video system is displayed as a matrix of pixels, ie the image can be represented using a collection of data for a series of pixels. In a monochrome graphic, each binary bit represents a picture pixel, 0 corresponds to black, 1 corresponds to white, and for color images, a number of binary representations are used, and the number of bits per pixel data is determined to be in a single bit. The number of different colors appearing in the figure, such as 4 bits of pixels, can produce sixteen colors. The more bits, the richer the color, and the closer the image is to the natural color, the true color. Basically, when the color reaches true color, the human vision cannot sensitively distinguish between small color differences. Since the image is composed of many pixel values, we can achieve the information by slightly changing the color (pixel value) of the image. The hidden.

Specific processing method: The present invention processes the last 4 bits of each color RGB component of each pixel constituting a picture, and uses bit coverage to implement information storage, wherein the original information is appropriately changed. Part of the value of the picture pixel.

Specific steps: 1 convert the information to be hidden into a binary data string, and then read it one bit at a time; 2 scan the original image bit, read the RGB color component of each pixel of the image; 3 select the color of each pixel The last 4 bits of the component are covered with the data bits of the hidden information. If it is 0, the corresponding position is 0. If it is 1, the corresponding position is 1, completing the implantation and coverage of the information data; 4 showing the hidden Save the picture of the specified information; 5 to read the information in the image, then reverse processing, scan and read the last 4 bits of the RGB color component of each pixel of the image, form a binary data string, and then convert into GBK code, The plain text can be displayed.

The invention utilizes pictures to realize application components of information hiding, including a mapper and a mapper, two technical innovation products, and an operation flow chart is shown in FIG. 1 . The following two application components are specified:

First, the mapper:

The image-forming device of the image hidden information is shown in Figure 2. In terms of structure, the mapper is mainly composed of the main interface of the mapping system, the scheme editing interface and the image selection interface. The specific functions and operation settings of each component interface are as follows: :

(1) The main interface of the mapping system, as shown in Figure 2. It mainly consists of three information boxes, two parameter setting buttons, two functional buttons and a parameter display area. The three information boxes are divided into the upper left, upper right, and lower of the main interface, which are the original pattern frame, the hidden information picture generation frame, and the information edit box. Its functions are:

Original pattern box: A picture for storing and displaying the selected hidden information. It can store a wide variety of pictures.

The hidden information picture generation frame is used to store and display the picture after the system is implanted with information. After the system hides the information in the picture, it will be displayed in the box without destroying the overall structure and shape of the original pattern.

Information edit box: This information box is used to enter the information to be implanted. It can be Chinese characters, symbols, English, etc. The information in this box will be converted into binary data for corresponding encoding.

The main interface parameter setting button of the mapping system: as shown in Figure 2, there are mainly "plan number" and "pixel side length". The specific functions are as follows:

The “Scenario Number” button is used to set the parameters. By clicking the scheme number, the user can save, view or modify the mapping content in the numbering scheme. In each mapping scheme, there are many parameter settings for the constituent scheme. . In this mapper, at least 20 image generation and editing schemes can be saved. In addition to being able to reproduce the already completed pattern, there is no need to do the editing work again for the repeated application of the picture. The number of this part of the program can be adjusted according to the actual amount.

"Pixel side length" button, this parameter is used to adjust the size of the generated hidden information picture, the adjustment range is in the range of 1 to 9, each time the "pixel side length" value is adjusted, the hidden information picture generation frame The size of the picture changes once, and the change in size is proportional. That is, if the pixel side length is increased by "1" measure, the picture size is doubled in the same proportion.

Two functional buttons mainly include "generate" and "save graphic code", and the two buttons are placed in the middle of the main interface in turn. The "Generate" button is used to select a picture to be processed and inject information, and then the command system generates a picture of the corresponding hidden information; the function of the "Save Picture Code" button is to save the generated hidden information picture to a local file. In this picture, it is also displayed as an encrypted image file.

The "Edit Scheme" button is a button from the main interface of the mapping system to open the next interface. It opens the "Program Editing" interface, as shown in Figure 3. This interface is used to generate a hidden image of the image, which is created and processed. The image before the information is saved.

A parameter display area is a "code side length" column, which is a scale value for displaying the size of the geometric coding unit. The length of the code is designed as a scale value, and generally sets a pixel point size inherent to the machine, which is a geometric coding unit. The different code lengths are determined by the ratio, which is also the reference value of the code information storage amount. The mapper allows the computer to automatically calculate the code length and display it when generating each image hidden information, thereby observing the pattern in real time. Information stock situation.

(2) "program editing" interface: it is "editing scheme" in the interface system of Figure 2, clicked to open, expand the "program editing" interface, as shown in Figure 3, the left side is from top to bottom, followed by There are functional buttons: "Open Image", "Open Document", "Empty Scheme" "Complete Plan"; the right frame is "Picture Display Box", and their respective functions are as follows:

“Open Image”: In the “Program Edit” interface, click the “Open Image” button to enter the third-party image “Open” interface, as shown in Figure 4. In this interface, the user implements the selection process of the third-party image.

"Empty scheme": used to clear the existing image in the current display box and the image of the hidden information generated by it.

“Complete plan”: It means that the current hidden information picture has been completed. After clicking, save the picture of the current hidden information and jump to the main interface of the software system.

“Picture display box”: used to store and display the image after the system is implanted.

The steps of the mapper for applying the image hidden information of the present invention are as follows:

(1) Open the interface of the mapper system of the present invention, select the scheme number, and select one of the scheme numbers that have been set as the object of editing and saving. Click the "Edit Scheme" button to enter the "Program Edit" interface.

(2) In the “Program Editing” interface, click the “Open Picture” button to select the picture of the information to be hidden from the local device. After the selection is completed, the picture will be displayed in the picture display box on the right. Finally, click on “Complete Plan” to return to the main interface of the mapper system. If you need to change the image of the required hidden information, click “Clear Scheme”, the image already loaded in the right display box will be completely cleared, and the scheme selection can be made again.

(3) In the information bar of the main interface of the imager system, input the information that needs to be hidden, click the “Generate” button, and use the software to process the data of each color pixel that constitutes the image, using the method of bit coverage. Implantation of information.

(4) After adjusting the generated information to save the picture, click the “Save Image” button to save the picture of the information, save it to the local device, and rename it. A picture that can be applied to hide the specified information is generated. It can also be applied to file confidentiality preservation and propagation.

The above content basically introduces the mapper of the present invention using the image hidden information. At present, the mapter has been created and is well used.

Second, the mapper:

The invention utilizes the image plotter of the image hiding information technology component. As shown in FIG. 5, from the structural composition, the image solver has two display frames and three functional buttons.

The specific function settings and operations are as follows:

(1) Two display frames are divided into the left and right sides of the interface of the solver, the left frame is a hidden picture display frame, and the right frame is a display frame for reading information. Its functions are:

Hidden Image Display Box: Used to display a picture with specific information hidden and import it into the mapper system for the system to interpret.

Interpretation message box: used to store and display the information content read by the reader from the picture.

(2) Three functional buttons, which are located at the upper right of the mapper interface, including "select picture", "intercept picture", "resolution or decoding".

The function of the "Select Picture" button is to directly obtain a file saved as a hidden picture for resolution, and the picture can be in the form of "GIF", "JPG", "png", and the like.

"Capture picture" is to automatically save the picture into a solution system by intercepting a picture of the hidden information on the current computer screen, and display it in the picture frame, waiting for interpretation.

"Solution or Decoding" is the solution of the image in the hidden picture display frame. When this button is clicked, the interpretation operation is automatically performed without using peripheral devices, and the result is displayed in the interpretation information frame.

The scheme for information interpretation: the solution process is the inverse process of the hidden information mapping process. The information in the image is read out and reverse processed. The last 4 bits of each pixel of the image are scanned, and the binary string is formed after reading. The conversion can display clear text.

Therefore, the disassembler component of the present invention mainly operates as follows: 1 select or intercept a picture containing the hidden information, input to the solution display frame, and perform solution; 2 in the interpretation information box, after viewing the solution Information.

The above functions enable the component mapper of the present invention to be applicable to the interpretation of a variety of hidden picture products for online transmission and display, and can hide files in a wide range of applications without increasing memory.

DRAWINGS

1 is a flow chart of applying image hidden information and interpreting information;

2 is a diagram of a mapper system interface in which a picture is hidden;

Figure 3 is a "scheme editing" interface diagram opened in the mapper system;

Figure 4 is an interface diagram opened when a third party picture is cited;

5 is a diagram of an interpreter interface for interpreting image hidden information;

Figure 6 is an example original picture;

7 is a diagram of importing an example original picture into a map system in a "program editing" interface;

8 is an interface diagram of preparing information to be implanted in a processed example image;

Figure 9 is an interface diagram for editing information on the main interface of the imager;

10 is a diagram of a picture interface for generating hidden text information in a mapper interface;

Figure 11 hides the picture pattern of the text information;

12 is a diagram of an interpreter interface for importing a hidden text information picture;

Figure 13 is a diagram of an interpreter interface for interpreting hidden text information.

detailed description

The present invention describes a technique for using a picture to store text information and a component application thereof, including an operation process of a mapper and a mapper, to further illustrate the above-mentioned invention, and to implement the flow in FIG. 1; The mapter of 2, the mapper of Figure 5, generates and interprets the information hidden in the picture.

The following example shows the process of storing text information in a picture:

1. Select a picture to load the information, as shown in Figure 6.

2. Process the image in the mapper and generate a picture of the hidden information:

1 In the main interface of the imager, in the “Scheme Number” column, select the plan number with the number 0;

2 Click the “Edit Scheme” button to enter the “Program Edit” interface, click its “Open Picture” button, and display the specified picture in the right border column of the “Program Edit” interface through the position path of the picture. As shown in Figure 7;

3 In the “Program Editing” interface, click the “Complete Plan” button, the interface will return to the main interface of the imager, and the selected information to be loaded will be displayed in the left frame, as shown in Figure 8;

4 In the main information interface of the imager "information edit box", enter the text information to be hidden, as shown in Figure 9;

5 In the main interface of the imager, select the appropriate pixel value and code side length, and then click the “Generate” button. A picture with the specified information is displayed in the right display box, as shown in Figure 10;

6 On the mapter interface, click the “Save” button and name the generated hidden information image, which will be saved in the local device for use, as shown in Figure 11.

7 For a picture that determines the information to be loaded, when the information and application are stored next time, the above-mentioned mapping process will be completed automatically and quickly, without excessive manual operation.

The process of storing the information of the stylistic information and decoding the information is as follows:

1 open the mapper interface, as shown in Figure 5;

2 Click the "Select Picture" button or the "Capture Picture" button in the mapper to select the hidden information picture and display it in the left pattern column, as shown in Figure 12;

3 Click the “Solution or Decode” button, and in the right information column, the information hidden in the image is displayed in order, as shown in Figure 13.

In this case, the text information can be directly implanted into the specified image through the mapper. Changing the structure and visual perception of the picture itself realizes the function of hiding the text information in the specified picture without increasing the memory space of the original pattern. In this example, the text information hidden in the picture is interpreted by the mapper to interpret the information hidden in the picture. It can be seen that the technology and components for hiding information in the picture of the invention increase the deep information storage and interpretation technology, and have broad application prospects.

The above examples are only one specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any modifications made by those skilled in the art, within the spirit and principle of the present invention, Equivalent substitutions, improvements, etc., are intended to be included within the scope of the present invention.

Claims

The invention provides a technical scheme and an application component for storing information in a computer application picture, adopting a hidden coding operation with a picture color as a coding unit, and realizes not changing the picture without increasing the picture memory. In the case of its own structure and visual sense, a large amount of information or data is stored and can be effectively interpreted from the picture of the loaded information; its operational components include the mapper and the mapper.
According to claim 1, in the computer application picture, a hidden coding operation using a picture color as a coding unit is adopted, which is further characterized by the following steps: 1 converting, by a computer, information to be hidden into Binary data string, then read one bit at a time; 2 bit scan the original image, read the RGB color component of each pixel of the image; 3 select the last 4 bits of the color component of each pixel, and use the data of the hidden information Bit coverage, if it is 0, the corresponding position is 0. If it is 1, the corresponding position is 1, completing the implantation and coverage of the information data; 4 displaying the picture with the specified information hidden; 5 to be hidden in the image When the information is read, the reverse processing is performed, and the last 4 bits of the RGB color component of each pixel of the image are scanned and read to form a binary data string, and then converted into a GBK code to display the plaintext.
According to claim 1, in the computer application picture, the operation component of the hidden information includes two parts, a mapper and a mapper, and their characteristics are:

(1) The main interface of the mapper system is mainly composed of three information boxes, two parameter setting buttons, two functional buttons and one parameter display area, among which three information boxes are divided into upper left and upper right positions on the main interface. And below, in order, the original pattern frame, the hidden information picture generation frame, and the information edit box;

(2) The mapper has two display boxes and three functional buttons, two of which are divided into left and right sides located on the interface of the mapper. The left frame is a hidden picture display box, and the right frame is for reading information. Display box; three functional buttons, located at the top right of the mapper interface, including "select picture", "intercept picture", "resolution or decoding".
According to the claims 1 and 3, in the computer application picture, the operation component of the hidden information includes two parts, a mapper and a mapper, and further characterized in that their function settings are respectively:

(1) In the main interface of the mapper system, its function settings are:

1 original pattern frame: used to store and display the selected hidden information picture;

2 hidden information picture generation box: used to store and display the picture after the system is implanted;

3 information edit box: used to input the information to be implanted;

4 "Scenario Number" button, used to set the parameters, by clicking on the program number, the user can save, view or modify the mapping content in the numbering plan. In each mapping scheme, there are many constituents. Parameter setting of the case;

5 "pixel side length" button, this parameter is used to adjust the size of the generated hidden information picture, the adjustment range is in the range of 1 to 9, each time the "pixel side length" value is adjusted, the hidden information picture is generated. The size of the picture in the box changes once, and the change in size is proportional;

6 "Generate" button, used to select and process the image and inject the information, the command system generates a corresponding image of the hidden information;

The function of the 7 "Save Image Code" button is to save the generated hidden information picture to a local file;

8 "Edit Scheme" button, which opens the "Scheme Edit" interface, which is used to generate a picture of hidden information, which is the picture before the creation and processing of the hidden information;

9 "code side length" column, is used to display the scale value of the geometric coding unit size, the mapter, set the machine's inherent pixel size, a geometric coding unit, to determine the different code length When generating each image hidden information, let the computer automatically calculate the code length and display it, so as to observe the information stock in the pattern in real time;

(2) In the main interface of the mapper system, its function settings are:

1 hidden picture display box: used to display the image with hidden specific information, will be interpreted;

2 Interpretation message box: used to store and display the information content read from the picture;

3 "Select picture" button is to directly obtain the file saved as a hidden picture;

4 "Capture picture" is to intercept the picture of a hidden information on the current computer screen, automatically save it into the solution system, and display it in the picture frame, waiting for interpretation;

5 "Resolution or Decoding", click this button to automatically perform the interpretation operation without using peripheral devices.
The mapper according to claims 1, 3, and 4, click on the "edit scheme" button to open the "program edit" interface, which is from top to bottom from the left side, and has a functional button: "open" Picture, Open Document, Empty Scheme, Complete Solution; the right frame is Picture Display Box, where the main function setting features are:

1 "Open picture": Click this button to enter the third-party picture interface, and the user implements the selection process of the third-party picture;

2 "Empty scheme": used to clear the existing image in the current display box and the generated hidden information picture;

3 “Complete the plan”: After the current hidden information picture is completed, click this button to save the current hidden information picture and jump to the main interface of the system.
The steps of the mapper and the mapper according to claims 1, 3, and 4 are as follows:

(1) Open the graphator system interface, select the scheme number, and select one of the scheme numbers that have been set. As the editing and saving object, click the “Edit Scheme” button to enter the “program editing” interface;

(2) In the “Program Editing” interface, click the “Open Picture” button to select the picture of the information to be hidden from the local device. After the selection is completed, click “Complete Plan” to return to the main interface of the mapper system;

(3) In the information bar of the main interface of the imager system, input the information that needs to be hidden, click the “Generate” button, the system processes the data of each color pixel that constitutes the image, and uses the method of bit coverage to complete the information. Implantation

(4) After adjusting the generated information to save the picture, click the “Save Image” button to save the picture of the information, save it to the local device, and rename it;

(5) The main operations of the mapper: 1 Select or intercept a picture containing the hidden information, input to the solution display box, and perform the solution; 2 In the interpretation message box, view the information after the solution.