CN112651056A - Anti-screenshot display method, device and system - Google Patents
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Abstract
The invention provides an anti-screen-capture display method, device and system, wherein the method comprises the following steps: acquiring pre-display content, and sampling the pre-display content to obtain a plurality of sampling frames; each sampling frame comprises a plurality of sampling frame pixel points; determining the color proportion of pixel points of each sampling frame, and constructing a plurality of display frames for each sampling frame according to the color proportion; each display frame includes a partial color of the sample frame; the plurality of display frames are sent to the display to cause the display to display the content of the plurality of display frames. According to the invention, a plurality of display frames are constructed for each sampling frame according to the color proportion of the pixel points of the sampling frames, so that the display displays the contents of the plurality of display frames, and each display frame only comprises partial colors of the sampling frames, so that the screen cutting software and tools cannot capture the complete display contents, and the protection of the output contents of the display screen is realized.
Description
Technical Field
The invention relates to the technical field of information security, in particular to a screen capture prevention display method, device and system.
Background
With the popularization of electronic devices such as personal computers, mobile phones and smart televisions, display screens are rapidly popularized and developed at a high speed as visual general output devices. From the early CRT (Cathode Ray Tube) Display screens, to LCD (Liquid Crystal Display) Display screens, OLED (Organic Light-Emitting Diode) Display screens, to the latest flexible AMOLED (Active Matrix/Organic Light Emitting Diode) Display screens, the Display screen technology is becoming mature, and the Display effect is becoming stronger. The display screen which supports high resolution, high brightness, high contrast, high refresh rate and wide visual range is produced and enters the public life.
Due to the popularization of display screens, how to protect the contents output through the display screens from being easily copied by screen capture is becoming a more and more concerned problem.
Disclosure of Invention
The invention provides a screen capture prevention display method, device and system, which can prevent screen capture software and tools from capturing complete display contents and protect output contents of a display screen.
In a first aspect, an embodiment of the present invention provides an anti-screenshot display method, including: acquiring pre-display content, and sampling the pre-display content to obtain a plurality of sampling frames; each of the sample frames comprises a plurality of sample frame pixel points; determining the color proportion of each sampling frame pixel point, and constructing a plurality of display frames for each sampling frame according to the color proportion; each display frame comprises a partial color of the corresponding sampling frame; sending the plurality of display frames to a display to cause the display to display the content of the plurality of display frames.
In a second aspect, an embodiment of the present invention further provides an anti-screen-capture display device, including: the device comprises a sampling module, a display module and a display module, wherein the sampling module is used for acquiring pre-display content and sampling the pre-display content to obtain a plurality of sampling frames; each of the sample frames comprises a plurality of sample frame pixel points; the construction module is used for determining the color proportion of each sampling frame pixel point and constructing a plurality of display frames for each sampling frame according to the color proportion; each display frame comprises a partial color of the corresponding sampling frame; and the sending module is used for sending the display frames to a display so as to enable the display to display the content of the display frames.
In a third aspect, an embodiment of the present invention further provides an anti-screenshot display system, including the anti-screenshot display apparatus.
In a fourth aspect, an embodiment of the present invention further provides a computer device, including a memory and a processor, where the memory stores a computer program operable on the processor, and the processor implements the above-mentioned anti-screenshot display method when executing the computer program.
In a fifth aspect, the present invention further provides a computer-readable medium having a non-volatile program code executable by a processor, where the program code causes the processor to execute the above anti-screenshot display method.
The embodiment of the invention has the following beneficial effects: the embodiment of the invention provides an anti-screenshot display scheme, which is characterized in that a plurality of sampling frames are obtained by sampling pre-displayed contents, each sampling frame comprises a plurality of sampling frame pixel points, then a plurality of display frames of each sampling frame are constructed by determining the color proportion of the pixel points of each sampling frame, each display frame comprises partial colors of the sampling frame, and the plurality of display frames are sent to a display, so that the display displays the contents of the plurality of display frames. According to the embodiment of the invention, a plurality of display frames are constructed for each sampling frame according to the color proportion of the pixel points of the sampling frames, so that the display displays the contents of the plurality of display frames, and each display frame only comprises partial colors of the sampling frames, so that the screen cutting software and tools cannot capture the complete display contents, and the protection of the output contents of the display screen is realized.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a flowchart of an anti-screenshot display method according to an embodiment of the present invention;
FIG. 2 is a block diagram of a possible method for constructing a display frame according to an embodiment of the present invention;
FIG. 3 is a block diagram of another possible method for constructing a display frame according to an embodiment of the present invention;
FIG. 4 is a block diagram of another possible method for constructing a display frame according to an embodiment of the present invention;
FIG. 5 is a block diagram of another possible method for constructing a display frame according to an embodiment of the present invention;
FIG. 6 is a block diagram of an anti-screenshot display apparatus according to an embodiment of the present invention;
fig. 7 is a block diagram of a computer device according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Currently, in windows platforms, a screenshot-resistant copy of display output content can be drawn through a DirectX (DX) interface. DirectX is a multimedia Programming Interface created by microsoft corporation, and is an Application Programming Interface (API). DirectX can enable a game or a multimedia program taking windows as a platform to obtain higher execution efficiency, strengthen 3D graphics and sound effects, provide a common hardware driving standard for designers, enable game developers not to write different drivers for each brand of hardware, and reduce the complexity of hardware installation and setting for users.
DirectX provides a special channel to send display contents from GPU to display, and the output stream of GPU captured by general screen capture software can not cover the data of DX special channel, so as to attain the goal of preventing screen capture copy.
DirectX is designed for windows platforms exclusively and cannot provide a cross-platform solution. And, the dedicated channel of DX is to offer and open/close the interface, after users close DX channel manually, the display content can be copied by the complete screenshot.
Based on this, the screen capture prevention display method, device and system provided by the embodiment of the invention can prevent screen capture software and tools from capturing complete display content, and can protect the output content of the display screen without affecting the integrity of the output content of the display screen.
To facilitate understanding of the embodiment, a detailed description will be given to an anti-screenshot display method disclosed in the embodiment of the present invention.
The embodiment of the invention provides an anti-screenshot display method, which is shown in a flow chart of the anti-screenshot display method shown in figure 1 and comprises the following steps:
step S102, obtaining the pre-display content, and sampling the pre-display content to obtain a plurality of sampling frames.
In the embodiment of the invention, the content to be displayed on the display is pre-displayed, the content to be displayed is sampled, the sampling density is higher than the resolution of the display, the sampling precision is higher than the color depth of the display, a plurality of sampling frames are obtained, each sampling frame comprises a plurality of sampling frame pixel points, and the plurality of sampling frames comprise all the content to be pre-displayed.
It should be noted that, because the pre-display content may exist in different formats, the pre-display content may be converted into a format convenient to process by sampling, so as to achieve the unification of the pre-display content formats.
And step S104, determining the color proportion of the pixel points of each sampling frame, and constructing a plurality of display frames for each sampling frame according to the color proportion.
In the embodiment of the invention, the sampling frame pixel points are used for displaying the colors in the pre-displayed content (original image), the colors in the original image can be decomposed into a plurality of colors, and the decomposed plurality of colors can be alternately displayed for each sampling frame pixel point due to the afterglow effect of human eyes. By the alternate display, the human eye can capture the same information as the pre-display content from the display screen. Therefore, each sampling frame pixel point can be replaced and displayed by a plurality of pixel points, each sampling frame comprises a plurality of pixel points, each pixel point is replaced and displayed by a plurality of pixel points, and therefore a plurality of display frames are obtained, and the number of pixel points of each display frame is the same as that of the sampling frame. The process of determining a plurality of replacement display frames of each sampling frame, namely the process of constructing a plurality of display frames for each sampling frame based on the colors decomposed by the original image, wherein the plurality of display frames are decomposed and reconstructed based on one sampling frame, and each display frame comprises partial colors of the sampling frame.
It should be noted that each display frame includes a partial color of the corresponding sampling frame, and each display frame cannot be the same as the sampling frame.
Step S106, the plurality of display frames are sent to the display, so that the display displays the content of the plurality of display frames.
In the embodiment of the invention, a plurality of display frames are constructed for each sampling frame, so that the pre-display content comprising the sampling frames can be displayed instead of the plurality of display frames, and the plurality of display frames are sent to the display, so that the display can display the content of the display frames, and the purpose of screen capture prevention is realized while the pre-display content is displayed.
It should be noted that the original image content is respectively constructed to different display frames, based on a display screen with a high refresh rate, the display content of each constructed frame can be rapidly refreshed and displayed, a complete picture is synthesized in human brain through afterglow effect of human eyes, and meanwhile, each constructed frame does not contain all information of the original image, so that the purpose of screen capture prevention is achieved. According to the embodiment of the invention, the plurality of display frames replace the sampling frames to be displayed on the display, when the screen is shot, the content of the display frames is obtained, and the colors in the display frames are different from the colors in the sampling frames, so that a screen shot person cannot obtain the color information in the original image, and the protection of the display content is realized.
The embodiment of the invention provides an anti-screenshot display scheme, which is characterized in that a plurality of sampling frames are obtained by sampling pre-displayed contents, each sampling frame comprises a plurality of sampling frame pixel points, then a plurality of display frames of each sampling frame are constructed by determining the color proportion of the pixel points of each sampling frame, each display frame comprises partial colors of the sampling frame, and the plurality of display frames are sent to a display, so that the display displays the contents of the plurality of display frames. According to the embodiment of the invention, a plurality of display frames are constructed for each sampling frame according to the color proportion of the pixel points of the sampling frames, so that the display displays the contents of the plurality of display frames, and each display frame only comprises partial colors of the sampling frames, so that the screen cutting software and tools cannot capture the complete display contents, and the protection of the output contents of the display screen is realized.
Considering that in order to improve the efficiency of constructing the display frames, the color proportion of the pixel point of each sampling frame is determined, and a plurality of display frames are constructed for each sampling frame according to the color proportion, which can be performed according to the following steps:
carrying out color extraction on the sampling frame pixel points according to a color adding method to obtain the color proportion of each sampling frame pixel point; and constructing a plurality of display frames for each sampling frame according to the color proportion of the pixel points of the sampling frame.
In the embodiment of the present invention, the additive color method refers to a method of mixing three primary colors of red (R), green (G), and blue (B) of color light, which are added in different proportions to mix other colors. Color extraction is performed on the sampling frame pixel points according to a color adding method to obtain the RGB color proportion of each sampling frame pixel point, for example, the extraction result may be: original image color: red 216, green 0, blue 0, or the extraction result may be, the original color: red 240, green 180, blue 70. Each sample frame is then split into a plurality of display frames based on the RGB color ratios.
Considering that in order to make the display frame more fit with the user requirement, a plurality of display frames are constructed for each sampling frame according to the color proportion of the pixel points of the sampling frame, and the method can be executed according to the following steps:
determining the number of first target frames; determining the color purity of the pixel point of each first target frame according to the color proportion of the pixel point of the sampling frame and the number of the first target frames; the plurality of first target frames for which the color purity is determined are collectively used as a plurality of display frames for each sampling frame.
In the embodiment of the present invention, the number of the first target frames is the number of the display frames into which the user plans to split one frame of the sampling frame, for example, for each frame of the sampling frame, 3 frames of the display frames are planned to be constructed, so that the number of the first target frames is 3, and generally, the number of the first target frames is a positive integer greater than or equal to 2. The color purity, which means the percentage of the primary color occupied in the color, indicates the proportion of the colored component contained in the color.
Determining the color proportion of the pixel point of each first target frame according to the color proportion of the pixel point of the sampling frame and the number of the first target frames, for example, when the number of the first target frames is determined to be 3, the color proportion of the pixel point of the sampling frame is as follows: the red 240, the green 180, and the blue 70 are split based on the color ratio of the sampling frame, and the color purity of the pixel point of each first target frame is determined one by one, for example, the result may be: first target frame color purity: red 250, green 100, blue 0; second first target frame color purity: red 235, green 250, blue 50; third first target frame color purity: red 235, green 190, blue 160. The first target frame to the third first target frame are collectively used as a plurality of display frames of sampling frames having color ratios of red 240, green 180, and blue 70.
Referring to fig. 2, a possible method for constructing a display frame is shown, for example, an original image is a frame of a full white image, and after sampling processing, the method obtains: 1 frame red +1 frame blue +1 frame green, when the frame sequence is combined, if the number of the first target frames is 2, the red frame can be kept still, and the blue and the green are spliced into the same frame to form a frame with light blue. Thus, the first target frame is red and the second first target frame is bluish, the red and bluish being sent to the display as display frames. When the output is performed, red and light blue are alternately output, and then the output is also seen to be white; however, when the picture is captured, no matter how the picture is captured, the captured picture is either red or light blue.
In order to ensure the color purity of the original image content, the color proportion of the pixel point of each first target frame can be determined according to the following formula and the color proportion of the pixel point of the sampling frame and the number of the first target frames.
X1+ X2+ … + XN is NxR, Y1+ Y2+ … + YN is NxG, and Z1+ Z2+ … + Z3 is NxB, wherein X1, X2, …, and XN are the red color purities of the pixels in the first to nth first target frames in sequence, Y1, Y2, …, and YN are the green color purities of the pixels in the first to nth first target frames in sequence, Z1, Z2, …, and ZN are the blue color purities of the pixels in the first to nth first target frames in sequence, N is the number of the first target frames, R is the red color proportion of the pixels in the sampling frame, G is the green color proportion of the pixels in the sampling frame, and B is the blue color proportion of the pixels in the sampling frame.
It should be noted that, in the embodiment of the present invention, when the frame sequence is combined, the frame sequence may be broken into multiple frames with different color saturation degrees by using color purity (saturation degree), but it is necessary to ensure that the color purity of the original image is achieved when the frames are output cyclically.
For example, the original image is a frame of orange-yellow image, and referring to another possible method for constructing a display frame shown in fig. 5, the original image is planned to be split into 3 frames, and the color of the original image is: red 240, green 180, blue 70; in the 3 frames split, it is assumed that: first frame color: red X1, green Y1, blue Z1; color of the second frame: red X2, green Y2, blue Z2; color of the third frame: red X3, green Y3, blue Z3; the requirements are satisfied: 1. x1+ X2+ X3 ═ 3X240, for example, X1 ═ 250, X2 ═ 235, X3 ═ 235; 2. y1+ Y2+ Y3 ═ 3x180, for example, Y1 ═ 100, Y2 ═ 250, Y3 ═ 190; 3. z1+ Z2+ Z3 is 3x70, for example Z1 is 0, Z2 is 50 and Z3 is 160.
Then, the color purities of the 3 display frames constructed from the sampled frames are: first frame color: red 250, green 100, blue 0; color of the second frame: red 235, green 250, blue 50; color of the third frame: red 235, green 190, blue 160. When the images are output, 3 display frames are output circularly, the images are still orange yellow, but the original images cannot be obtained when the images are captured.
Referring to fig. 4, another possible method for constructing a display frame is shown, in the embodiment of the present invention, regarding an example of a color ratio (color purity) and a framing algorithm in case of RGB monochrome:
for example, the original image is a frame of full red image, red is pure red, and the color purity of blue and green is 0, so 3 first target frames of red, black and black are obtained after sampling, and when a frame sequence is combined, the frame sequence can be broken into multiple frames of different color saturation degrees by using the color purity (saturation degree), but when the frames are required to be output circularly, the color purity presented by the original image is achieved.
For example, split into 3 frames, original colors: red 216, green 0, blue 0; in the synthesized 3 frames, assume that: first frame color: red X1, green 0, blue 0; color of the second frame: red X2, green 0, blue 0; color of the third frame: red X3, green 0, blue 0; it is only necessary to satisfy X1+ X2+ X3-3X 216, for example, X1-255, X2-200, and X3-193 (the equation is always true based on 0+0+ 0-3X 0, so it is not necessary to consider framing of blue and green). When the image is output, 3 frames (or a plurality of frames) are output circularly, the original red can be seen, but only light or dark red pictures can be cut off when the image is captured.
It should be noted that the color purity (saturation) described herein is realized by adjusting the brightness (brightness) of the RGB bulb of the pixel when the actual display controls the imaging of the pixel.
Considering that in order to make the display frame more fit with the user requirement, a plurality of display frames are constructed for each sampling frame according to the color proportion of the pixel points of the sampling frame, and the method can be executed according to the following steps:
determining the number of second target frames and a plurality of target area positions of each second target frame; determining the color purity of the pixel point of each target area according to the color proportion of the pixel point of the sampling frame, the number of the second target frames and the positions of a plurality of target areas of the second target frames; determining the color purity of the pixel point of each second target frame according to the color purity of the pixel point of each target area; the plurality of second target frames for which the color purity is determined are collectively used as a plurality of display frames for each sampling frame.
In this embodiment of the present invention, the number of the second target frames is the number of the display frames into which the user plans to split one frame of the sampling frame, for example, for each frame of the sampling frame, 3 frames of the display frames are planned to be constructed, so that the number of the second target frames is 3, and generally, the number of the second target frames is a positive integer greater than or equal to 2. The plurality of target region locations of the second target frame includes a range and a location of each region for which the second target frame is intended to be divided into a plurality of regions.
Referring to fig. 3, another possible method for constructing a display frame is shown, for example, the original image is a frame of full white image, and after sampling processing, the method obtains: 1 frame red +1 frame blue +1 frame green, when the frame sequence is combined, if the number of the second target frames is 4, each frame can be cut into 4 regions according to the position of the target region, so that 4 target regions are obtained, the color purity of the pixel point of each second target frame is determined according to the color purity of the pixel point of each target region, the 4 target regions can be spliced, 4 different second target frames are obtained, and then 4 display frames are obtained, and when the frame sequence is output, 4 frames are circularly output, so that the frame sequence can be seen to be white, but when the frame sequence is captured, the appearance of the white of an original image can not be seen. Each frame can also be cut into more than 4 areas, so that a sequence of more than 4 frames can be spliced and output.
In order to ensure the integrity of the content of the original image, the display frame is sent to the display, which may be performed according to the following steps:
determining the output times of the display frames according to the expected display duration and the display refresh rate; and circularly sending the display frames to the display according to the output times of the display frames.
Assuming that the expected display time of the original image is t seconds, namely the expected display time of a sampling frame is t, and the expected display time of the sampling frame is t, for the display frame, the expected display time is also t, if the sampling frame is a frame, if each sampling frame is constructed into N display frames, the display frames have a × N frames in total, for the sampling frame, the display refresh rate is F Hz, for the display frame, the display refresh frequency is required to be N × F, for the display frame, the cycle output frequency of the display frame sequence is c, according to the formula: and c, calculating the number of times of display frame cycle output, and outputting the display frame cycle to the display according to the number.
Because the software screen capture only acquires one frame of display picture, each display frame of the original picture processed by the method only consists of red (R), green (G) or blue (B), the original picture content cannot be identified, and the purpose of screen capture prevention is achieved.
When human eyes observe a scene based on the phenomenon of persistence of vision (also called afterglow effect), light signals are transmitted to cerebral nerves, a short period of time is needed, after the action of light is finished, the visual image does not disappear immediately, and only a display frame consisting of red (R), green (G) or blue (B) enters the human brain, the original image content can be synthesized, so that the purpose of not influencing the display effect is achieved.
It should be noted that, assuming that the resolution of the human eye is F hz, when the display refresh rate F satisfies the inequality: when F is larger than or equal to 3F, the method cannot influence the display effect.
In order to adapt the resolution of the display screen, the pre-display content is sampled to obtain a plurality of sampling frames, which can be performed according to the following steps:
and performing up-sampling on the pre-display content to obtain a plurality of sampling frames.
In the embodiment of the present invention, the enlarged image is sampled (or referred to as upsampling (upsampling) or image interpolation (interpolating)), and the main purpose of using this sampling method is to: the original image is enlarged so that it can be displayed on a higher resolution display device. The up-sampling method comprises the following steps: the interpolation method is to insert new elements between pixel points by adopting a proper interpolation algorithm on the basis of the original image pixels. Through the up-sampling processing, the sampling frame can be more suitable for the resolution of the display screen.
Considering that, in order to improve data processing efficiency, the pre-display content is sampled to obtain a plurality of sampling frames, the following steps may be performed:
and downsampling the pre-display content to obtain a plurality of sampling frames.
In the embodiment of the present invention, the reduced image is sampled (or called downsampled or downsampled), and there are two main purposes of using this sampling method: 1. fitting the image to the size of the display area; 2. a thumbnail of the corresponding image is generated. The down-sampling method comprises the following steps: for an original image with the size of M × N, performing s-fold down-sampling on the original image to obtain a resolution-divided image with the size of (M/s) × (N/s), where s is a common divisor of M and N, and if an image in a matrix form is considered, an image in an original image s × s window is changed into one pixel, and a value of the pixel is an average value of all pixels in the window.
Under the condition that the data volume of the pre-display content is large, a down-sampling method is used for obtaining sampling frames, so that the data processing amount can be reduced, and the data processing efficiency can be improved.
The embodiment of the invention provides an anti-screen capture display scheme, which comprises the following steps of: the original image content is respectively constructed on different display frames, the display content of each constructed frame can be rapidly refreshed and displayed on the basis of a display screen with a high refresh rate, a complete picture is synthesized in human brain through afterglow effect of human eyes, and meanwhile, each constructed frame does not contain all information of the original image, so that the purpose of screen capture prevention is achieved.
An embodiment of the present invention further provides an anti-screenshot display device, referring to a structural block diagram of the anti-screenshot display device shown in fig. 6, where the device includes:
the sampling module 61 is configured to acquire pre-display content and sample the pre-display content to obtain a plurality of sampling frames; each sampling frame comprises a plurality of sampling frame pixel points; the construction module 62 is configured to determine a color ratio of each sampling frame pixel point, and construct a plurality of display frames for each sampling frame according to the color ratio; each display frame comprises a part of the color of the corresponding sampling frame; and a sending module 63, configured to send the multiple display frames to the display, so that the display displays the content of the multiple display frames.
In one embodiment, the building block is specifically configured to: carrying out color extraction on the sampling frame pixel points according to a color adding method to obtain the color proportion of each sampling frame pixel point; and constructing a plurality of display frames for each sampling frame according to the color proportion of the pixel points of the sampling frame.
In one embodiment, the building block is specifically configured to: determining the number of first target frames; determining the color purity of the pixel point of each first target frame according to the color proportion of the pixel point of the sampling frame and the number of the first target frames; the plurality of first target frames for which the color purity is determined are collectively used as a plurality of display frames for each sampling frame.
In one embodiment, the building block is specifically configured to: determining the color proportion of the pixel point of each first target frame according to the color proportion of the pixel point of the sampling frame and the number of the first target frames according to the following formula: x1+ X2+ … + XN is NxR, Y1+ Y2+ … + YN is NxG, and Z1+ Z2+ … + Z3 is NxB, wherein X1, X2, …, and XN are the red color purities of the pixels in the first to nth first target frames in sequence, Y1, Y2, …, and YN are the green color purities of the pixels in the first to nth first target frames in sequence, Z1, Z2, …, and ZN are the blue color purities of the pixels in the first to nth first target frames in sequence, N is the number of the first target frames, R is the red color proportion of the pixels in the sampling frame, G is the green color proportion of the pixels in the sampling frame, and B is the blue color proportion of the pixels in the sampling frame.
In one embodiment, the building block is specifically configured to: determining the number of second target frames and a plurality of target area positions of each second target frame; determining the color purity of the pixel point of each target area according to the color proportion of the pixel point of the sampling frame, the number of the second target frames and the positions of a plurality of target areas of the second target frames; determining the color purity of the pixel point of each second target frame according to the color purity of the pixel point of each target area; the plurality of second target frames for which the color purity is determined are collectively used as a plurality of display frames for each sampling frame.
In one embodiment, the sending module is specifically configured to: determining the output times of the display frames according to the expected display duration and the display refresh rate; and circularly sending the display frames to the display according to the output times of the display frames.
In one embodiment, the sampling module is specifically configured to: and performing up-sampling on the pre-display content to obtain a plurality of sampling frames.
In one embodiment, the sampling module is specifically configured to: and downsampling the pre-display content to obtain a plurality of sampling frames.
The embodiment of the invention also provides an anti-screen capture display system which comprises any one of the anti-screen capture display devices.
The embodiment of the present invention further provides a computer device, referring to the schematic block diagram of the structure of the computer device shown in fig. 7, the computer device includes a memory 71 and a processor 72, the memory stores a computer program that can be executed on the processor, and the processor implements the steps of any one of the methods when executing the computer program.
It is clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the computer device described above may refer to the corresponding process in the foregoing method embodiments, and no further description is provided herein
Embodiments of the present invention also provide a computer readable medium having non-volatile program code executable by a processor, the program code causing the processor to perform any of the steps of the above-described method.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (12)
1. An anti-screen-capture display method, comprising:
acquiring pre-display content, and sampling the pre-display content to obtain a plurality of sampling frames; each of the sample frames comprises a plurality of sample frame pixel points;
determining the color proportion of each sampling frame pixel point, and constructing a plurality of display frames for each sampling frame according to the color proportion; each display frame comprises a partial color of the corresponding sampling frame;
sending the plurality of display frames to a display to cause the display to display the content of the plurality of display frames.
2. The method of claim 1, wherein determining a color ratio for each pixel point of the sample frames and constructing a plurality of display frames for each of the sample frames based on the color ratios comprises:
carrying out color extraction on the sampling frame pixel points according to a color adding method to obtain the color proportion of each sampling frame pixel point;
and constructing a plurality of display frames for each sampling frame according to the color proportion of the pixel points of the sampling frame.
3. The method of claim 2, wherein constructing a plurality of display frames for each of the sample frames based on the color ratios of the pixel points of the sample frame comprises:
determining the number of first target frames;
determining the color purity of the pixel point of each first target frame according to the color proportion of the pixel point of the sampling frame and the number of the first target frames;
and using the plurality of first target frames with the determined color purity as a plurality of display frames of each sampling frame.
4. The method of claim 3, comprising:
determining the color purity of the pixel point of each first target frame according to the color proportion of the pixel point of the sampling frame and the number of the first target frames according to the following formula:
X1+X2+…+XN＝NxR，
Y1+Y2+…+YN＝NxG，
Z1+Z2+…+Z3＝NxB，
x1, X2, … and XN are red color purities of pixel points in the first target frame to the Nth first target frame in sequence, Y1, Y2, … and YN are green color purities of pixel points in the first target frame to the Nth first target frame in sequence, Z1, Z2, … and ZN are blue color purities of pixel points in the first target frame to the Nth first target frame in sequence, N is the number of the first target frames, R is a red color proportion of pixel points of sampling frames, G is a green color proportion of pixel points of the sampling frames, and B is a blue color proportion of pixel points of the sampling frames.
5. The method of claim 2, wherein constructing a plurality of display frames for each of the sample frames based on the color ratios of the pixel points of the sample frame comprises:
determining the number of second target frames and a plurality of target area positions of each second target frame;
determining the color purity of the pixel point of each target area according to the color proportion of the pixel point of the sampling frame, the number of the second target frames and the positions of a plurality of target areas of the second target frames;
determining the color purity of the pixel point of each second target frame according to the color purity of the pixel point of each target area;
and using the plurality of second target frames with the determined color purity as a plurality of display frames of each sampling frame.
6. The method of any of claims 1-5, wherein sending the display frame to a display comprises:
determining the output times of the display frames according to the expected display duration and the display refresh rate;
and circularly sending the display frames to a display according to the output times of the display frames.
7. The method of any of claims 1-5, wherein sampling the pre-display content for a plurality of sampled frames comprises:
and performing upsampling on the pre-display content to obtain a plurality of sampling frames.
8. The method of any of claims 1-5, wherein sampling the pre-display content for a plurality of sampled frames comprises:
and downsampling the pre-display content to obtain a plurality of sampling frames.
9. An anti-screen capture display device, comprising:
the device comprises a sampling module, a display module and a display module, wherein the sampling module is used for acquiring pre-display content and sampling the pre-display content to obtain a plurality of sampling frames; each of the sample frames comprises a plurality of sample frame pixel points;
the construction module is used for determining the color proportion of each sampling frame pixel point and constructing a plurality of display frames for each sampling frame according to the color proportion; each display frame comprises a partial color of the corresponding sampling frame;
and the sending module is used for sending the display frames to a display so as to enable the display to display the content of the display frames.
10. An anti-screenshot display system comprising an anti-screenshot display device according to claim 9.
11. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method of any one of claims 1 to 8 when executing the computer program.
12. A computer-readable medium having non-volatile program code executable by a processor, the program code causing the processor to perform the method of any of claims 1 to 8.
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