CN115798400A - LED display control method and device based on image processing and LED display system - Google Patents
LED display control method and device based on image processing and LED display system Download PDFInfo
- Publication number
- CN115798400A CN115798400A CN202310024937.1A CN202310024937A CN115798400A CN 115798400 A CN115798400 A CN 115798400A CN 202310024937 A CN202310024937 A CN 202310024937A CN 115798400 A CN115798400 A CN 115798400A
- Authority
- CN
- China
- Prior art keywords
- display
- screen
- led display
- image
- pixel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of El Displays (AREA)
Abstract
The invention relates to the technical field of LED light-emitting control, in particular to an LED display control method, an LED display control device and an LED display system based on image processing, wherein the method comprises the following steps: acquiring a display image of the LED display screen; cutting the display image to obtain a screen area, and performing deformation correction on the obtained screen area; acquiring display content, and generating a display target graph according to the display content; superposing the deformed and corrected screen area on the display target image, and calculating the difference obtained by subtracting the pixel value of the corresponding pixel of the display target image from the pixel value of the pixel of the screen area; calculating the average value of all the absolute values of the difference values, and dividing the obtained average value by a coefficient 256 to obtain a correction factor; and adjusting the display of the LED display screen according to the correction factor. The invention obtains the display image of the LED screen, makes a difference with the display target image after the deformation correction, obtains a correction factor according to the obtained difference, and controls the display of the LED display according to the correction factor.
Description
Technical Field
The invention relates to the technical field of LED light-emitting control, in particular to an LED display control method and device based on image processing and an LED display system.
Background
The LED display screen utilizes the LED array to arrange to form the screen, and the different bright combinations of going out of LED lamp through control LED array form picture and text information, and the wide application is in fields such as traffic guidance, commercial advertisement, culture propaganda.
The LED advertising screen is most attractive in application of commercial advertising, on one hand, the display screen is rich in displayed content and is easy to attract attention of people, and on the other hand, the display screen is highest in commercial value, good in equipment maintenance and fast in content updating. LED advertising screens are widely used in large commercial areas.
The parameters mainly required to be controlled by the LED display screen during working comprise display content, display brightness, refreshing frequency, content contrast and the like. The control of the display brightness is very important, the brightness is too low, the displayed content is not easy to attract attention, and people at a distance cannot clearly observe the displayed content; too high brightness will result in wasted energy and damage to hardware. In this regard, the prior art is basically controlled by a brightness sensor. However, the brightness sensor detects brightness, and the final goal of LED brightness control is to enable a person to view a sharp picture. The brightness sensor can only detect the brightness change in the space range, and the problem that the picture seen by an observer is blurred due to the visibility of the environment cannot be solved.
Disclosure of Invention
In view of the above, it is desirable to provide an LED display control method, an LED display control apparatus, and an LED display system based on image processing.
The embodiment of the invention is realized in such a way that an LED display control method based on image processing comprises the following steps:
acquiring a display image of the LED display screen;
cutting the display image to obtain a screen area, and performing deformation correction on the obtained screen area;
acquiring display content, and generating a display target graph according to the display content;
superposing the deformed and corrected screen area on the display target image, and calculating the difference obtained by subtracting the pixel value of the corresponding pixel of the display target image from the pixel value of the pixel of the screen area;
calculating the average value of all the absolute values of the difference values, and dividing the obtained average value by a coefficient 256 to obtain a correction factor;
and adjusting the display of the LED display screen according to the correction factor.
In one embodiment, the present invention provides an image processing-based LED display control apparatus, including:
the display image acquisition module is used for acquiring a display image of the LED display screen;
the cutting correction module is used for cutting the display image to obtain a screen area and performing deformation correction on the obtained screen area;
the display content acquisition module is used for acquiring display content and generating a display target graph according to the display content;
the pixel difference calculation module is used for superposing the deformed and corrected screen area on the display target image and calculating the difference obtained by subtracting the pixel value of the pixel corresponding to the display target image from the pixel value of the pixel in the screen area;
the correction factor module is used for calculating the average value of all the absolute values of the difference values, and dividing the obtained average value by a coefficient 256 to obtain a correction factor;
and the color correction module is used for adjusting the display of the LED display screen according to the correction factor.
In one embodiment, the present invention provides an LED display system comprising:
the LED display screen is used for displaying images;
the camera is used for shooting a display image of the LED display screen; and
and the control module is respectively connected with the LED display screen and the camera and is used for executing the LED display control method based on image processing to adjust the display of the LED display screen.
According to the method, the display image of the LED screen is acquired through the camera, the screen area is obtained through cutting and deforming the display image, and the screen area can be restored through deformation correction of the obtained screen area; processing the restored screen area and the display target image to obtain pixel difference, wherein the pixel difference reflects the difference between the observed screen display effect and the preset effect; a correction factor can be obtained from the pixel difference, and the power output of the LED screen is adjusted according to the obtained correction factor. Different from the brightness of the display controlled by detecting the ambient brightness through a brightness sensor in the prior art, the invention utilizes the display image of the LED display screen, is an adjusting mode based on the observation result, and can be suitable for the problem of blurred observed pictures caused by the weather with strong light scattering such as rain, snow, fog and the like.
Drawings
FIG. 1 is a flow chart of an embodiment of a method for controlling an LED display based on image processing;
FIG. 2 is a block diagram of an LED display control device based on image processing according to an embodiment;
FIG. 3 is a block diagram of an LED display system according to an embodiment;
FIG. 4 is a block diagram showing an internal configuration of a computer device according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms unless otherwise specified. These terms are only used to distinguish one element from another. For example, a first xx script may be referred to as a second xx script, and similarly, a second xx script may be referred to as a first xx script, without departing from the scope of the present disclosure.
As shown in fig. 1, in an embodiment, an LED display control method based on image processing is provided, which may specifically include the following steps:
s100, acquiring a display image of the LED display screen;
step S200, cutting the display image to obtain a screen area, and performing deformation correction on the obtained screen area;
step S300, acquiring display content, and generating a display target graph according to the display content;
step S400, superposing the deformed and corrected screen area on the display target image, and calculating the difference obtained by subtracting the pixel value of the corresponding pixel of the display target image from the pixel value of the pixel of the screen area;
step S500, calculating the average value of all the absolute values of the difference values, and dividing the obtained average value by a coefficient 256 to obtain a correction factor;
and S600, adjusting the display of the LED display screen according to the correction factor.
In this embodiment, the display image of the LED display screen is an image shot by the camera after the LED screen displays the formed image, including the screen itself, and the shot image is closer to the display result observed by the human eye, so the present invention is a control method based on the output result.
In this embodiment, when the fixed camera is used, since the screen is relatively fixed, the position and size of the display screen in the acquired image are also relatively fixed, so the method used for cutting and correcting the deformation of the displayed image is fixed, and automatic cutting and correction can be realized by programming.
In this embodiment, the display content is electronic data, and a display target map is generated according to the display content, and the display target map is generated according to basic parameters (including but not limited to screen size, resolution, refresh rate, etc.) of the display screen, which is equivalent to intercepting the display content of the display screen.
In this embodiment, the screen area is superimposed on the target display image, and the pixel value of the corresponding pixel point (pixel point having the same row and column) in the corresponding target image is subtracted from the pixel value of the pixel point in the screen area, so as to obtain the pixel difference of the corresponding pixel point, where the pixel difference obtained under the absolutely ideal condition is 0, that is, the real display result is the same as the predetermined result. However, due to the clarity of the display, light may scatter as it propagates, causing the captured display to be inconsistent with the intended result, and the pixel difference reflects the degree of such inconsistency.
In this embodiment, the power output of the display screen is adjusted by the correction factor, so that the screen can be brighter or darker, and the picture observed from a distance is clearer.
The method provided by the invention obtains the display image of the LED screen through the camera, obtains the screen area through cutting and deforming the display image, and restores the screen area through the deformation correction of the obtained screen area; processing the restored screen area and the display target image to obtain pixel difference, wherein the pixel difference reflects the difference between the observed screen display effect and the preset effect; a correction factor can be obtained from the pixel difference, and the power output of the LED screen is adjusted according to the obtained correction factor. Different from the brightness of the display controlled by detecting the ambient brightness through a brightness sensor in the prior art, the invention utilizes the display image of the LED display screen, is an adjusting mode based on the observation result, and can be suitable for the problem of blurred observed pictures caused by the weather with strong light scattering such as rain, snow, fog and the like.
As a preferred embodiment of the present invention, the cutting the display image to obtain a screen area includes:
generating a quadrilateral frame with preset size and shape at a preset position of a display image;
and deleting the contents except the quadrangular frame to obtain a screen area.
In this embodiment, since the fixed screen is photographed by using the fixed camera, the size and the relative position of the display screen are fixed in the obtained display image.
As a preferred embodiment of the present invention, the distortion correction of the obtained screen area includes:
respectively connecting two groups of opposite angles of the quadrilateral frame to obtain two intersecting lines;
calculating the average distance from the four corner points to the intersection point of the two intersecting lines;
taking the intersection point of the two intersecting lines as the center, and taking the obtained average distance as the radius to make a circle;
and moving the four angular points to a circle and moving the four angular points on the circle so that the area of a rectangle formed by the four angular points is equal to that of the original quadrilateral frame, and obtaining a corrected screen area.
In the embodiment, the screen image deformed in the display image can be corrected by the method, so that the comparison processing with the display target image is facilitated.
As a preferred embodiment of the present invention, the adjusting the display of the LED display screen according to the correction factor includes:
counting the positive and negative of the obtained difference, if m% of all the differences are regular, displaying is slightly bright, and if m% of all the differences are negative, displaying is slightly dark;
if the display is bright, obtaining the regulated output power of the LED display screen by the (1-correction factor) and the current output power of the LED display screen;
if the display is dark, obtaining the regulated output power of the LED display screen by the (1 + correction factor) and the current output power of the LED display screen;
wherein m is a positive number, and m is more than 50 and less than 100.
In this embodiment, m is preferably 70 to 80, for example, 75. Under the condition of not changing the color of the displayed image, the power can be increased or reduced to make the pixel point bright or dim, so that the method is suitable for different environmental conditions.
As a preferred embodiment of the present invention, the calculation of the average value of all absolute values of the difference values, and the division of the obtained average value by a coefficient 256 to obtain a correction factor; adjusting the display of the LED display screen according to the correction factor, comprising:
dividing the LED display screen into a plurality of control areas, counting the positive and negative of the difference value obtained by each control area, if the m% of the difference value of a single control area is regular, the display of the control area is brighter, and if the m% of the difference value of the single control area is negative, the display of the control area is darker;
if the control area displays partial brightness, the output power of the control area is adjusted according to (1-correction factor) and the output power of the current control area;
if the display of the control area is dark, the output power of the control area is adjusted according to (1 + correction factor) and the output power of the current control area;
wherein m is a positive number, and m is more than 50 and less than 100.
In the present embodiment, the difference from the foregoing embodiments is that in the present embodiment, the display area of the display screen is divided, and each area can be controlled individually. Specifically, the method can be divided into 3 × 3 control regions with the same size, 2 × 2 control regions with the same size, 4 control regions with the same size, 16 control regions with different numbers, 64 control regions with different numbers, and the like.
As a preferred embodiment of the present invention, the method further includes:
determining an environmental visibility level;
and carrying out default processing on the display image according to the environmental visibility grade, and controlling an LED screen to display the image after the default processing.
In the present embodiment, visibility here is synonymous with visibility in a general sense, except that the metric used in the present invention is different. In this embodiment, the default processing of the image means that the selected pixels in the image are not displayed, that is, the selected pixels are set to black, so that the density of the pixels is reduced, the displayed image is observed more clearly from a distance, and the phenomena of ghosting and blurring caused by scattering in the propagation process of light are solved.
As a preferred embodiment of the present invention, the determining the environmental visibility level includes:
calculating the difference value of the corresponding pixel of the image obtained after the screen area of the display image is cut off and the standard image;
the average of the obtained differences is calculated and the visibility level is obtained from the ratio of the obtained average to 256.
In the present embodiment, specifically, the visibility level may be specifically set to one level when the calculated ratio falls between (0.25, 0.5); when the calculated ratio falls between [0.5,0.75], the visibility level is second-order; when the calculated ratio falls between (0.75, 1), the visibility level is three-level.
As a preferred embodiment of the present invention, the default processing of the display image according to the environmental visibility level includes:
taking four adjacent pixels with a common angular point as a pixel group;
when the visibility is one level, default pixels are 25%, and one selected pixel of each pixel group is set to be black;
when the visibility is two-level, default pixels are 50%, and odd or even pixels of each pixel group are set to be black;
when visibility is three levels, the default pixel is 75%, and three selected pixels of each pixel group are set to black.
In this embodiment, the selected pixel may specifically refer to a pixel in a first row and a first column (from the top left corner); and the three selected pixels may in particular be other pixels than the pixels of the second row and the second column (from the upper left). It should be noted that no matter how to select the pixels, there is no substantial influence on the essence of the present invention, and it is only necessary to ensure that the manner of selecting the pixels for each pixel group is the same, and at this time, it can be ensured that the default pixels in the picture are uniformly distributed, and the final display effect is not affected.
As shown in fig. 2, an embodiment of the present invention further provides an image processing-based LED display control apparatus, including:
the display image acquisition module is used for acquiring a display image of the LED display screen;
the cutting correction module is used for cutting the display image to obtain a screen area and performing deformation correction on the obtained screen area;
the display content acquisition module is used for acquiring display content and generating a display target graph according to the display content;
the pixel difference calculating module is used for superposing and arranging the screen area after the deformation correction on the display target image and calculating the difference obtained by subtracting the pixel value of the pixel corresponding to the display target image from the pixel value of the pixel in the screen area;
the correction factor module is used for calculating the average value of all the absolute values of the difference values, and dividing the obtained average value by a coefficient 256 to obtain a correction factor;
and the color correction module is used for adjusting the display of the LED display screen according to the correction factor.
In this embodiment, each module of the LED display control device based on image processing is a module of the method part of the present invention, and for the specific explanation of each module, please refer to the contents of the method part of the present invention, which is not repeated herein.
As shown in fig. 3, an embodiment of the present invention further provides an LED display system, where the LED display system includes:
the LED display screen is used for displaying images;
the camera is used for shooting a display image of the LED display screen; and
and the control module is respectively connected with the LED display screen and the camera and is used for executing the LED display control method based on image processing to adjust the display of the LED display screen.
In the embodiment, the display image of the LED pixel screen is shot by a camera, and at this time, the original camera may be specially set, or a camera for monitoring shops and roads may be used, and the present invention is applied by the internet of things technology. The LED display screen is large in picture, long in visible distance and easy to be influenced by environmental conditions.
In this embodiment, the control module may be set in the form of a computer device, the system provided by the present invention obtains a display image of an LED screen through a camera, obtains a screen area by performing cutting deformation on the display image, and restores the screen area by performing deformation correction on the obtained screen area; processing the restored screen area and the display target image to obtain pixel difference, wherein the pixel difference reflects the difference between the observed screen display effect and the preset effect; a correction factor can be obtained from the pixel difference, and the power output of the LED screen is adjusted according to the obtained correction factor. Different from the brightness of the display controlled by detecting the ambient brightness through a brightness sensor in the prior art, the invention utilizes the display image of the LED display screen, is an adjusting mode based on the observation result, and can be suitable for the problem of blurred observed pictures caused by the weather with strong light scattering such as rain, snow, fog and the like.
FIG. 4 is a diagram illustrating an internal structure of a computer device in one embodiment. The computer device may specifically be the control module in fig. 3. As shown in fig. 4, the computer apparatus includes a processor, a memory, a network interface, an input device, and a display screen connected through a system bus. Wherein the memory includes a non-volatile storage medium and an internal memory. The non-volatile storage medium of the computer device stores an operating system, and may further store a computer program, and when the computer program is executed by the processor, the computer program may enable the processor to implement the method for controlling the LED display based on the image processing according to the embodiment of the present invention. The internal memory may also store a computer program, and when the computer program is executed by the processor, the computer program may enable the processor to execute the method for controlling LED display based on image processing according to the embodiment of the present invention. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
Those skilled in the art will appreciate that the configuration shown in fig. 4 is a block diagram of only a portion of the configuration associated with aspects of the present invention and is not intended to limit the computing devices to which aspects of the present invention may be applied, and that a particular computing device may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, the LED display control apparatus based on image processing provided by the embodiment of the present invention can be implemented in the form of a computer program, and the computer program can be run on a computer device as shown in fig. 4. The memory of the computer device may store therein various program modules constituting the image-processing-based LED display control apparatus, such as a display image acquisition module, a cropping correction module, a display content acquisition module, a pixel difference calculation module, a correction factor module, and a color correction module shown in fig. 2. The computer program constituted by the respective program modules causes the processor to execute the steps in the image processing-based LED display control method of the respective embodiments of the present invention described in this specification.
For example, the computer apparatus shown in fig. 4 may perform step S100 by the display image acquisition module in the LED display control device based on image processing as shown in fig. 2; the computer device may perform step S200 through the cutting correction module; the computer device may perform step S300 through the display content obtaining module; the computer device may perform step S400 through the pixel difference calculation module; the computer device may perform step S500 through the correction factor module; the computer device may perform step S600 through the color correction module.
In one embodiment, a computer device is proposed, the computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the following steps when executing the computer program:
acquiring a display image of the LED display screen;
cutting the display image to obtain a screen area, and performing deformation correction on the obtained screen area;
acquiring display content, and generating a display target graph according to the display content;
superposing the deformed and corrected screen area on the display target image, and calculating the difference obtained by subtracting the pixel value of the corresponding pixel of the display target image from the pixel value of the pixel of the screen area;
calculating the average value of all the absolute values of the difference values, and dividing the obtained average value by a coefficient 256 to obtain a correction factor;
and adjusting the display of the LED display screen according to the correction factor.
In one embodiment, a computer readable storage medium is provided, having a computer program stored thereon, which, when executed by a processor, causes the processor to perform the steps of:
acquiring a display image of the LED display screen;
cutting the display image to obtain a screen area, and performing deformation correction on the obtained screen area;
acquiring display content, and generating a display target graph according to the display content;
superposing the screen area after the deformation correction on the display target image, and calculating the difference obtained by subtracting the pixel value of the pixel corresponding to the display target image from the pixel value of the pixel in the screen area;
calculating the average value of all the absolute values of the difference values, and dividing the obtained average value by a coefficient 256 to obtain a correction factor;
and adjusting the display of the LED display screen according to the correction factor.
It should be understood that, although the steps in the flowcharts of the embodiments of the present invention are shown in sequence as indicated by the arrows, the steps are not necessarily performed in sequence as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of the steps in various embodiments may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a non-volatile computer-readable storage medium, and can include the processes of the embodiments of the methods described above when the program is executed. Any reference to memory, storage, databases, or other media used in embodiments provided herein may include non-volatile and/or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), rambus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An LED display control method based on image processing, which is characterized by comprising the following steps:
acquiring a display image of the LED display screen;
cutting the display image to obtain a screen area, and performing deformation correction on the obtained screen area;
acquiring display content, and generating a display target graph according to the display content;
superposing the deformed and corrected screen area on the display target image, and calculating the difference obtained by subtracting the pixel value of the corresponding pixel of the display target image from the pixel value of the pixel of the screen area;
calculating the average value of all the absolute values of the difference values, and dividing the obtained average value by a coefficient 256 to obtain a correction factor;
and adjusting the display of the LED display screen according to the correction factor.
2. The method for controlling LED display based on image processing according to claim 1, wherein the cropping the display image to obtain a screen area comprises:
generating a quadrilateral frame with preset size and shape at a preset position of a display image;
and deleting the contents except the quadrangular frame to obtain a screen area.
3. The image processing-based LED display control method according to claim 1, wherein the distortion correction of the obtained screen region includes:
respectively connecting two groups of opposite angles of the quadrilateral frame to obtain two intersecting lines;
calculating the average distance from the four corner points to the intersection point of the two intersecting lines;
taking the intersection point of the two intersecting lines as the center, and taking the obtained average distance as the radius to make a circle;
and moving the four angular points to a circle, and moving the four angular points on the circumference so as to enable the area of a rectangle formed by the four angular points to be equal to that of the original quadrilateral frame, thereby obtaining a corrected screen area.
4. The method of claim 1, wherein the adjusting the display of the LED display screen according to the correction factor comprises:
counting the positive and negative of the obtained difference, if m% of all the differences are regular, displaying the difference to be brighter, and if m% of all the differences are negative, displaying the difference to be darker;
if the display is slightly bright, obtaining the regulated output power of the LED display screen by (1-correction factor) and the output power of the current LED display screen;
if the display is dark, obtaining the regulated output power of the LED display screen by the (1 + correction factor) and the current output power of the LED display screen;
wherein m is a positive number, and m is more than 50 and less than 100.
5. The image processing-based LED display control method according to claim 4, wherein the calculating of the average value of all the absolute values of the difference values, the dividing of the average value by a coefficient 256, obtains a correction factor; adjusting the display of the LED display screen according to the correction factor, comprising:
dividing the LED display screen into a plurality of control areas, counting the positive and negative of the difference value obtained by each control area, if the m% of the difference value of a single control area is regular, the display of the control area is brighter, and if the m% of the difference value of the single control area is negative, the display of the control area is darker;
if the display of the control area is slightly bright, the output power of the control area after regulation is obtained by (1-correction factor) and the output power of the current control area;
if the display of the control area is dark, the output power of the control area is adjusted according to (1 + correction factor) and the output power of the current control area;
wherein m is a positive number, and m is more than 50 and less than 100.
6. The image processing-based LED display control method according to claim 4 or 5, characterized in that the method further comprises:
determining an environmental visibility level;
and carrying out default processing on the display image according to the environmental visibility grade, and controlling an LED screen to display the image after the default processing.
7. The image processing-based LED display control method of claim 6, wherein the determining the ambient visibility level comprises:
calculating the difference value of the corresponding pixel of the image obtained after the screen area of the display image is cut off and the standard image;
the average of the obtained differences is calculated and the visibility level is obtained from the ratio of the obtained average to 256.
8. The method as claimed in claim 6, wherein the default processing of the display image according to the environmental visibility level comprises:
taking four adjacent pixels with a common angular point as a pixel group;
when the visibility is one level, default pixels are 25%, and one selected pixel of each pixel group is set to be black;
when the visibility is two-level, default pixels are 50%, and odd or even pixels of each pixel group are set to be black;
when visibility is three levels, the default pixel is 75%, and three selected pixels of each pixel group are set to black.
9. An image processing-based LED display control apparatus, comprising:
the display image acquisition module is used for acquiring a display image of the LED display screen;
the cutting correction module is used for cutting the display image to obtain a screen area and performing deformation correction on the obtained screen area;
the display content acquisition module is used for acquiring display content and generating a display target graph according to the display content;
the pixel difference calculating module is used for superposing and arranging the screen area after the deformation correction on the display target image and calculating the difference obtained by subtracting the pixel value of the pixel corresponding to the display target image from the pixel value of the pixel in the screen area;
the correction factor module is used for calculating the average value of all the absolute values of the difference values, and dividing the obtained average value by a coefficient 256 to obtain a correction factor;
and the color correction module is used for adjusting the display of the LED display screen according to the correction factor.
10. An LED display system, comprising:
the LED display screen is used for displaying images;
the camera is used for shooting a display image of the LED display screen; and
a control module, connected to the LED display screen and the camera respectively, for executing the LED display control method based on image processing according to any one of claims 1 to 8 to adjust the display of the LED display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310024937.1A CN115798400B (en) | 2023-01-09 | 2023-01-09 | LED display control method and device based on image processing and LED display system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310024937.1A CN115798400B (en) | 2023-01-09 | 2023-01-09 | LED display control method and device based on image processing and LED display system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115798400A true CN115798400A (en) | 2023-03-14 |
| CN115798400B CN115798400B (en) | 2023-04-18 |
Family
ID=85428788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310024937.1A Active CN115798400B (en) | 2023-01-09 | 2023-01-09 | LED display control method and device based on image processing and LED display system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115798400B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110134150A1 (en) * | 2008-10-24 | 2011-06-09 | Sharp Kabushiki Kaisha | Display device and method of driving display device |
| CN102158684A (en) * | 2010-02-12 | 2011-08-17 | 王炳立 | Self-adapting scene image auxiliary system with image enhancement function |
| KR20110135467A (en) * | 2010-06-11 | 2011-12-19 | 주식회사 힘스인터내셔널 | Video magnifying apparatus which have mouse type input device |
| CN107292820A (en) * | 2017-05-11 | 2017-10-24 | 厦门中控智慧信息技术有限公司 | Image split-joint method and device |
| US20180165052A1 (en) * | 2016-12-14 | 2018-06-14 | Samsung Electronics Co., Ltd. | Display apparatus and method of controlling the same |
| CN108510445A (en) * | 2018-03-30 | 2018-09-07 | 长沙全度影像科技有限公司 | A kind of Panorama Mosaic method |
| CN111625213A (en) * | 2019-02-28 | 2020-09-04 | 北京小米移动软件有限公司 | Picture display method, device and storage medium |
| CN114708821A (en) * | 2022-03-17 | 2022-07-05 | 空间显示(深圳)有限公司 | Intelligent LED display screen system based on multi-sensor data fusion |
-
2023
- 2023-01-09 CN CN202310024937.1A patent/CN115798400B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110134150A1 (en) * | 2008-10-24 | 2011-06-09 | Sharp Kabushiki Kaisha | Display device and method of driving display device |
| CN102158684A (en) * | 2010-02-12 | 2011-08-17 | 王炳立 | Self-adapting scene image auxiliary system with image enhancement function |
| KR20110135467A (en) * | 2010-06-11 | 2011-12-19 | 주식회사 힘스인터내셔널 | Video magnifying apparatus which have mouse type input device |
| US20180165052A1 (en) * | 2016-12-14 | 2018-06-14 | Samsung Electronics Co., Ltd. | Display apparatus and method of controlling the same |
| CN107292820A (en) * | 2017-05-11 | 2017-10-24 | 厦门中控智慧信息技术有限公司 | Image split-joint method and device |
| CN108510445A (en) * | 2018-03-30 | 2018-09-07 | 长沙全度影像科技有限公司 | A kind of Panorama Mosaic method |
| CN111625213A (en) * | 2019-02-28 | 2020-09-04 | 北京小米移动软件有限公司 | Picture display method, device and storage medium |
| CN114708821A (en) * | 2022-03-17 | 2022-07-05 | 空间显示(深圳)有限公司 | Intelligent LED display screen system based on multi-sensor data fusion |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115798400B (en) | 2023-04-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109147668B (en) | External compensation method of display panel, driving unit and display panel | |
| CN108877740B (en) | Method and device for acquiring Mura compensation data, computer equipment and storage medium | |
| CN109036245B (en) | Display processing method and device, integrated circuit and computer storage medium | |
| CN108877631B (en) | Mura compensation method and device for display screen, computer equipment and storage medium | |
| EP3516646B1 (en) | Apparatus for enhancing brightness uniformity of displayed image, display apparatus, and method for displaying image | |
| JP2020522726A (en) | Display panel unevenness correction method and display panel | |
| KR20190079748A (en) | Display device and method of driving the same | |
| CN109817170B (en) | Pixel compensation method and device and terminal equipment | |
| CN110364123B (en) | Backlight control method and device, electronic equipment and computer readable storage medium | |
| US20150116384A1 (en) | Display device and compensation method for the same | |
| CN104616631A (en) | Display method and device for MVA (multi-domain vertical alignment) wide viewing angle LCD (liquid crystal display) screen | |
| CN112614468B (en) | Brightness compensation method and system of display panel | |
| CN101290747A (en) | Image displaying method of electronic paper screen | |
| CN111258527A (en) | Display adjustment method, device, equipment and storage medium | |
| US8952881B2 (en) | Image display apparatus and information processing apparatus | |
| JP5337310B2 (en) | Image processing apparatus, display apparatus, and image processing method | |
| JP2011039451A (en) | Display device, luminance unevenness correction method, and device and method for generating correction data | |
| CN113538271A (en) | Image display method, image display device, electronic equipment and computer readable storage medium | |
| CN114999385A (en) | Memory-saving compensation method for rapidly dividing Mura area | |
| CN115798400B (en) | LED display control method and device based on image processing and LED display system | |
| CN114170976A (en) | Display brightness adjusting method and device, electronic equipment and computer readable storage medium | |
| CN111899690B (en) | Method and device for improving low-brightness Mura | |
| CN116634624A (en) | Illumination control method and device for transparent screen display cabinet | |
| KR100727835B1 (en) | Information display device | |
| US7991225B2 (en) | Methods and systems for dynamic color equalization |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |