CN115602099A - Display screen display adjusting method and system, computer equipment and storage medium - Google Patents
Display screen display adjusting method and system, computer equipment and storage medium Download PDFInfo
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/10—Intensity circuits
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Abstract
The application discloses a display screen display adjusting method, a system, computer equipment and a storage medium, wherein the display screen display adjusting method comprises the following steps: acquiring a current environment video stream; comparing the current environment video stream with a preset environment database to obtain an environment comparison result; acquiring the brightness standard of the LED display screen in the current environment based on the environment comparison result; and acquiring the brightness of the current LED display screen, and adjusting the brightness of the whole screen based on the brightness and the brightness standard of the current LED display screen. The method comprises the steps of comparing a current environment video stream with a preset environment database, obtaining an environment comparison result, obtaining a brightness standard of a current environment LED display screen according to the environment comparison result, obtaining the brightness of the current LED display screen, and further adjusting the brightness of the whole screen according to the brightness and the brightness standard of the current LED display screen. The LED display screen display automatic adjustment device has the advantages that the LED display screen display automatic adjustment under different environments is realized, the damage to the eyesight of a viewer is reduced, and the reliability and the accuracy of the LED display screen display adjustment are effectively guaranteed.
Description
Technical Field
The present application relates to the field of LED display screen display, and in particular, to a method and system for adjusting display of a display screen, a computer device, and a storage medium.
Background
An LED display screen generally comprises a display module, a control system and a power system. The display module is composed of a dot matrix consisting of LED lamps and mainly takes charge of luminous display; the control system can control the on and off of the LED lamps in the corresponding area, so that the screen can display the contents of characters, pictures, videos and the like; the power supply system is responsible for converting input voltage and current into voltage and current required by the display screen.
However, how to adjust the brightness and the picture size display of the LED display screen is an urgent problem to be solved.
Disclosure of Invention
The application provides a display screen display adjusting method, a display screen display adjusting system, computer equipment and a storage medium, and aims to solve the problem that how brightness and picture size display of an LED display screen are adjusted to reduce the influence on a viewer.
A display adjustment method of a display screen comprises the following steps:
acquiring a current environment video stream;
comparing the current environment video stream with a preset environment database to obtain an environment comparison result;
acquiring the brightness standard of the LED display screen in the current environment based on the environment comparison result;
and acquiring the brightness of the current LED display screen, and adjusting the brightness of the whole screen based on the brightness and the brightness standard of the current LED display screen.
The present application may be further configured in a preferred example to: acquiring a current environment video stream, comprising:
obtaining an LED display screen identification result based on a plurality of video frames in the obtained current environment video stream;
and cutting the LED display screen images in the plurality of video frames based on the identification result to obtain the cut images of the LED display screen.
The present application may be further configured in a preferred example to: after obtaining the image of the clipped LED display screen, the method comprises the following steps:
preprocessing the image of the cut LED display screen, and analyzing the preprocessed image;
and obtaining the brightness standard of the LED display screen in the current environment based on the preprocessed image and a preset environment database.
The application may be further configured in a preferred example to: after acquiring the current environmental video stream, the method comprises the following steps:
acquiring the pixel point distance of the LED display screen and the actual distance between the LED display screen and a viewer based on the current environment video stream;
determining the scaling of a display picture based on the pixel point distance and the actual distance;
and adjusting the image size and the display brightness of the LED display screen based on the scaling.
The application may be further configured in a preferred example to: after obtaining the pixel interval of LED display screen, include:
acquiring pixel density based on the pixel point distance;
analyzing the current whole-screen brightness based on the pixel density to obtain a current whole-screen brightness result;
and adjusting the working state of the LED lamp beads based on the current whole screen brightness result.
The application may be further configured in a preferred example to: obtaining the brightness of the current LED display screen, including:
acquiring the brightness value of each lamp point in the current LED display screen;
and generating a brightness distribution diagram based on the brightness value of each lamp point in the LED display screen, and checking whether a low-brightness-value area exists in the brightness distribution diagram.
The application may be further configured in a preferred example to: adjusting the brightness of the whole screen, comprising:
adjusting the current flowing through two ends of the LED display screen;
and/or, the width of the light pulse is periodically changed according to the pulse width modulation method to realize gray scale grasping.
The second purpose of the application is to provide a display screen display adjusting system.
The second application object of the present application is achieved by the following technical scheme:
a display screen display adjustment system, comprising:
the video stream acquisition module is used for acquiring a current environment video stream;
the acquisition environment comparison module is used for comparing the current environment video stream with a preset environment database to acquire an environment comparison result;
the brightness standard obtaining module is used for obtaining the brightness standard of the LED display screen in the current environment based on the environment comparison result;
and the whole screen brightness adjusting module is used for acquiring the brightness of the current LED display screen and adjusting the whole screen brightness based on the brightness of the current LED display screen and the brightness standard.
The third purpose of the application is to provide a computer device.
The third objective of the present application is achieved by the following technical solutions:
a computer device comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the processor executes the computer program to realize the display screen display adjustment method.
The fourth purpose of the present application is to provide a computer-readable storage medium.
The fourth application purpose of the present application is achieved by the following technical solutions:
a computer-readable storage medium, in which a computer program is stored, which, when executed by a processor, implements the display adjustment method of the display screen.
In conclusion, the application has the following beneficial technical effects:
according to the display adjusting method, the display adjusting system, the display adjusting equipment and the readable storage medium, the current environment video stream is compared with the preset environment database to obtain the environment comparison result, the brightness standard of the current environment LED display screen is obtained according to the environment comparison result, the brightness of the current LED display screen is obtained, and the brightness of the whole screen is adjusted according to the brightness of the current LED display screen and the brightness standard. Therefore, automatic adjustment of LED display screen display in different environments is achieved, damage to the eyesight of a viewer is reduced, and the reliability and accuracy of LED display screen display adjustment are effectively guaranteed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the description of the embodiments of the present application will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings may be obtained according to these drawings without inventive labor.
FIG. 1 is a flow chart illustrating a display adjustment method for a display screen according to a first embodiment of the present application;
FIG. 2 is a flowchart illustrating an overall method for adjusting a display of a display screen according to a first embodiment of the present application;
FIG. 3 is a schematic diagram illustrating a display adjustment system of a display screen according to an embodiment of the present application;
FIG. 4 is a diagram illustrating a computer device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. 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 application.
In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship, unless otherwise specified.
The embodiments of the present application will be described in further detail with reference to the drawings attached hereto.
The embodiment of the application provides a display screen display adjusting method, and the main flow of the method is described as follows:
referring to fig. 1, S10, a current environment video stream is acquired.
Where current ambient video stream refers to the transmission of current ambient video data, for example, that can be processed through the network as a steady and continuous stream.
Specifically, video stream information of the current environment is collected in real time, the ambient brightness is sensed by the aid of the photosensitive diodes, and the ambient brightness is uploaded to the cloud storage monitoring terminal. The method comprises the steps of obtaining current environment video stream information from a cloud storage monitoring terminal, slicing the current environment video stream information into a plurality of video frames, and identifying environment information in each video frame.
The step S10 is used for acquiring the environmental information in the current environmental video stream in an all-around manner, so as to facilitate identification of the environmental information.
In an embodiment, the step S10 of acquiring the current environment video stream includes:
s101, obtaining an LED display screen identification result based on a plurality of acquired video frames in the current environment video stream.
The LED display screen result comprises the model, the size, the imaging position and the like of the LED display screen.
S102, based on the recognition result, the images of the LED display screens in the video frames are cut, and the cut images of the LED display screens are obtained.
Specifically, a camera arranged in front of the LED display screen is used for shooting the LED display screen and the surrounding environment of the LED display screen, a plurality of video frames in the obtained current environment video stream are identified and analyzed to obtain an LED display screen result, and the video frames are properly cut according to the imaging position in the LED display screen identification result, so that only the image of the LED display screen is contained in the video frames, and other background contents except the LED display screen are not contained.
The steps S101 and S102 are for improving the accuracy of the brightness display detection of the LED display screen.
In one embodiment, after step S102, that is, after obtaining the image of the cropped LED display screen, the method includes:
s103, preprocessing the image of the cut LED display screen, and analyzing the preprocessed image.
And S104, obtaining the brightness standard of the LED display screen in the current environment based on the preprocessed image and the preset environment database.
The image preprocessing refers to the process of sorting each character image and sending the character image to an identification module for identification, and the process is called image preprocessing. In image analysis, the processing performed before feature extraction, segmentation, and matching is performed on an input image.
Specifically, the cropped image is preprocessed, including, for example, denoising, which may include removing background noise of the photograph, removing gaussian noise of the camera, and the like, and suitable modification, which may include, for example, rotation, distortion correction, and the like. Analyzing according to the environmental characteristics of the preprocessed image, comparing with a preset environmental database, and acquiring the type of the environment, such as: indoor and outdoor, etc., to extract the brightness standard in the environment type.
The brightness standard corresponding to the environment type is pre-input into a preset environment database, and the overall screen brightness of the outdoor LED display screen is generally closely related to the installation position, orientation, installation environment and other factors of the display screen. Such as: if the installation position of the outdoor LED display screen faces south or partial south, the brightness of the display screen is relatively high, generally 7000cd/m 2 The above; if the direction is north or off-north, i.e. away from the direction of direct sunlight, the brightness can be lower properly, at 5500cd/m 2 Left and right; if the outdoor LED display screen is positioned at the sheltered position of a high building and the sheltered position of a big tree in a city, the brightness is generally 4000cd/m 2 And (4) finishing.
The steps S103 and S104 have the functions of eliminating irrelevant information in the image, recovering useful real information, enhancing the detectability of relevant information and simplifying data to the maximum extent, thereby improving the reliability of feature extraction, image segmentation, matching and recognition. And moreover, the integrity of the LED display screen identification is improved.
In an embodiment, after step S10, i.e. after acquiring the current ambient video stream, the method includes:
s11, acquiring the pixel point distance of the LED display screen and the actual distance between the LED display screen and a viewer based on the current environment video stream.
The pixel point distance is the distance from the center of one lamp bead to the center of an adjacent lamp bead in the LED display screen, the unit is millimeter, the letter P in a common word of "pixel pitch" is called the dot distance for short, for example, a screen with the dot distance of 1.5mm is called P1.5, and a screen with the dot distance of 2mm is called P2. Other dot spacings, and so on.
And S12, determining the scaling of the display picture based on the pixel point distance and the actual distance.
And S13, adjusting the image size and the display brightness of the LED display screen based on the scaling.
Specifically, the scaling of the display screen is calculated according to the formula scaling = actual viewing distance/optimal viewing distance, wherein the actual viewing distance ≧ optimal viewing distance. The larger the actual line of sight, the larger the scale, i.e. the farther the viewer stands, the larger the display.
Wherein, the optimal viewing distance = pixel pitch × 3000.
The steps S11 to S13 are used for adjusting the image size and the display brightness of the LED display screen through the actual distance between the LED display screen and a viewer, and improving the feasibility and the integrity of display adjustment of the LED display screen.
In an embodiment, after step S11, that is, after obtaining the pixel pitch of the LED display screen, the method includes:
and S14, acquiring pixel density based on the pixel point distance.
And S15, analyzing the current whole-screen brightness based on the pixel density to obtain a current whole-screen brightness result.
The dot pitch reflects the pixel density from the distance between every two pixels, and the dot pitch and the pixel density are physical attributes of the display screen; the information capacity is the number unit of information carrying capacity displayed at one time per unit area pixel density. The smaller the dot pitch, the higher the pixel density, the more information capacity can be displayed at one time per unit area, and the closer the distance suitable for viewing. The larger the dot pitch, the lower the pixel density, the less information capacity per unit area that can be displayed at once, and the longer the distance suitable for viewing.
In the actual production of the LED display screen, the tricolor LED lamp tube with high luminous efficiency and rich and bright color should be selected, so that the area of a color triangle in a chromaticity diagram is as close to a spectrum track as possible, and rich color and enough brightness are met. Under the condition of defining brightness and dot density, the method for calculating the brightness of the lamp tube comprises the following steps: (two reds, one green, one blue as an example): brightness of the red LED lamp tube: luminance cd/m 2 + points/m 2 X is 0.3+2; brightness of the green LED lamp tube: luminance cd/m 2 + points/m 2 X is 0.6; brightness of the blue LED lamp tube: luminance cd/m 2 + points/m 2 X 0.1. For example: the luminance requirement of 2500 dots per square meter, 2R1G1B, per square meter is 5000 cd/m 2 The brightness of the red LED lamp tube is 5000+2500 × 0.3+2=0.3; the brightness of the green LED lamp tube is 5000+2500 multiplied by 0.6+2=1.2; the brightness of the blue LED lamp tube is 5000+2500 multiplied by 0.1=0.2; the brightness of each pixel point is 0.3 × 2+1.2+0.2=2.0 cd.
In an embodiment, in step S20, the current environment video stream is compared with a preset environment database to obtain an environment comparison result.
The preset environment database comprises indoor, outdoor, light intensity and light types. The types of light include natural light, scene light, and artificial light.
Specifically, n key frames are extracted from the current environment video stream, and m key frames are extracted according to a preset environment database; the method comprises the steps of sequentially and respectively carrying out similarity comparison on n key frames of a current environment video stream and each key frame of a preset database, obtaining a similar key frame group of the current environment video stream according to the similarity comparison of the key frames, determining a similar image group of the current environment video stream according to the similar key frame group, synchronizing time stream information to obtain a similar image segment, and analyzing the similar image segment to obtain an environment comparison result.
The step S20 has the function of improving the accuracy of judging the current environment type, so that the reliability and the accuracy of adjusting the brightness of the whole screen of the LED display screen are improved.
In an embodiment, in step S30, based on the environment comparison result, the brightness standard of the LED display screen in the current environment is obtained.
The brightness standard of the current environment LED display screen is the brightness standard which is input into a preset environment database in advance.
Specifically, the brightness standard of the LED display screen in the current environment is extracted from a preset environment database according to the obtained environment comparison result.
The step S30 is used for obtaining the brightness standard of the LED display screen in the current environment, providing reference for the brightness adjustment of the whole screen, and enabling the brightness adjustment of the whole screen to be accurate.
In an embodiment, in step S40, the brightness of the current LED display screen is obtained, and the brightness of the entire screen is adjusted based on the brightness of the current LED display screen and the brightness standard.
In an embodiment, the step S40 of obtaining the current brightness of the LED display screen includes:
s401, obtaining the brightness value of each lamp point in the current LED display screen.
S402, generating a brightness distribution graph based on the brightness value of each lamp point in the LED display screen, and checking whether a low-brightness-value area exists in the brightness distribution graph.
Specifically, determining low-brightness pixel points in a low-brightness value area as abnormal points, and judging whether the abnormal points form a connected domain or a discrete distribution state; if the connected domain is formed, determining that the abnormal point comes from the camera equipment; and if the lamp is in the discrete distribution state, determining that the abnormal point is the abnormal lamp point of the screen body. And extracting the brightness value of each lamp point of the screen body according to the brightness of the current LED display screen, and adjusting the brightness value of each lamp point of the screen body according to the brightness standard.
The steps S401 and S402 are for improving the accuracy of judging the light point state in the low brightness value region, and effectively improving the brightness adjustment efficiency of the light point in the low brightness value region.
In one embodiment, the step S40 of adjusting the brightness of the whole screen includes:
and S403, regulating the current flowing through two ends of the LED display screen.
S404, realizing gray scale mastering according to a pulse width modulation method, and periodically changing the width of the light pulse.
In which the Pulse Width (PWM) is modulated, the frequency of the variations that can be perceived by the human eye is used, and the pulse width modulation method is used to achieve gray scale control, i.e. the light pulse width is periodically changed. Pulse width modulation is more suitable for digital control and has been widely used, and a common method is to adopt a microcomputer. Almost all current LED displays employ pulse width modulation to control gray scale levels.
Specifically, the sensitive characteristic of the photoresistor to the ambient light is utilized to collect the change condition of the ambient light, convert the change condition into an electric signal and send the electric signal into the singlechip, the singlechip processes the signal and controls the duty ratio of the output PWM wave according to a certain rule. A switch voltage regulating circuit is additionally arranged between the single chip microcomputer and the LED display screen, so that the brightness of the display screen is regulated by the single chip microcomputer. And controlling the switch voltage regulating circuit by the adjusted PWM wave, so that the input voltage of the display screen is adjusted, and finally the brightness control of the display screen is realized.
In the display screen display adjustment method provided by this embodiment, as shown in the overall flow diagram of the display screen display adjustment method shown in fig. 2, the current environment video stream is compared with the preset environment database to obtain an environment comparison result, the brightness standard of the current environment LED display screen is obtained according to the environment comparison result, the brightness of the current LED display screen is obtained, and the brightness of the entire screen is adjusted according to the brightness of the current LED display screen and the brightness standard. Therefore, automatic adjustment of display of the LED display screen under different environments is achieved, damage to the eyesight of a viewer is reduced, and the reliability and accuracy of display adjustment of the LED display screen are effectively guaranteed.
The application further discloses a display adjusting system of the display screen.
Referring to fig. 3, the display screen display adjustment system includes:
an acquiring video stream module 10, configured to acquire a current environment video stream;
the acquired environment comparison module 20 is configured to compare the current environment video stream with a preset environment database, and acquire an environment comparison result;
the brightness standard obtaining module 30 is configured to obtain a brightness standard of the LED display screen in the current environment based on the environment comparison result;
and the whole screen brightness adjusting module 40 is used for acquiring the brightness of the current LED display screen and adjusting the whole screen brightness based on the brightness and the brightness standard of the current LED display screen.
The display screen display adjusting system provided by this embodiment can achieve the same technical effects as the foregoing embodiment because of the functions of the modules themselves and the logical connections among the modules, and for the principle analysis, reference may be made to the related description of the steps of the method for adjusting the display of the LED display screen, which will not be repeated herein.
For specific limitations of the display adjustment system of the display screen, reference may be made to the above limitations on the display adjustment method of the display screen, which are not described herein again. The modules in the display regulation system of the display screen can be wholly or partially realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, which may be a monitoring terminal, and its internal structure diagram may be as shown in fig. 4. The computer device includes a processor, a memory, a network interface, and a database connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile medium, an internal memory. The non-volatile medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile media. The database of the computer device is used for storing data to be saved in the camera-based monitoring method. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a display adjustment method for a display screen.
In an embodiment, a computer device is provided, which includes a memory, a processor, and a computer program stored on the memory and executable on the processor, and when the processor executes the computer program, the display screen display adjustment method according to the above embodiments is implemented, for example, in S10 to S40 shown in fig. 1. Alternatively, the processor, when executing the computer program, implements the functions of the modules/units of the display screen display adjustment system in the above embodiments, such as the functions of the modules 10 to 40 shown in fig. 3. To avoid repetition, further description is omitted here.
In an embodiment, a computer-readable storage medium is provided, on which a computer program is stored, and the computer program is executed by a processor to implement the display screen display adjustment method of the above embodiment, or the computer program is executed by the processor to implement the functions of each module/unit in the display screen display adjustment system of the above system embodiment. To avoid repetition, the description is omitted here.
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 hardware instructions of a computer program, which can be stored in a non-volatile computer-readable medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. 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).
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the system is divided into different functional units or modules to perform all or part of the above-mentioned functions.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. A display screen display adjusting method is characterized by comprising the following steps:
acquiring a current environment video stream;
comparing the current environment video stream with a preset environment database to obtain an environment comparison result;
acquiring the brightness standard of the LED display screen in the current environment based on the environment comparison result;
and acquiring the brightness of the current LED display screen, and adjusting the brightness of the whole screen based on the brightness of the current LED display screen and the brightness standard.
2. The method for adjusting display of display screen according to claim 1, wherein said obtaining the current ambient video stream comprises:
obtaining an LED display screen identification result based on a plurality of acquired video frames in the current environment video stream;
and cutting the LED display screen images in the video frames based on the identification result to obtain the cut images of the LED display screen.
3. A display adjustment method for a display screen according to claim 2, wherein after obtaining the image of the cropped LED display screen, the method comprises:
preprocessing the image of the cut LED display screen, and analyzing the preprocessed image;
and obtaining the brightness standard of the LED display screen in the current environment based on the preprocessed image and the preset environment database.
4. A method for adjusting display of a display screen according to claim 1, after said obtaining the current ambient video stream, comprising:
acquiring the pixel point distance of the LED display screen and the actual distance between the LED display screen and a viewer based on the current environment video stream;
determining the scaling of a display picture based on the pixel point distance and the actual distance;
and adjusting the image size and the display brightness of the LED display screen based on the scaling.
5. The display screen display adjustment method according to claim 4, after obtaining the pixel pitch of the LED display screen, comprising:
acquiring pixel density based on the pixel point distance;
and analyzing the current whole-screen brightness based on the pixel density to obtain a current whole-screen brightness result.
6. The display screen display adjusting method according to claim 1, wherein the obtaining the brightness of the current LED display screen comprises:
acquiring the brightness value of each lamp point in the current LED display screen;
and generating a brightness distribution graph based on the brightness value of each lamp point in the LED display screen, and checking whether a low-brightness-value area exists in the brightness distribution graph.
7. The display screen display adjusting method according to claim 1, wherein the adjusting of the brightness of the whole screen comprises:
adjusting the current flowing through two ends of the LED display screen;
and/or, the width of the light pulse is periodically changed according to the pulse width modulation method to realize gray scale grasping.
8. A display screen display adjustment system, comprising:
the video stream acquisition module is used for acquiring a current environment video stream;
the acquisition environment comparison module is used for comparing the current environment video stream with a preset environment database to acquire an environment comparison result;
the brightness standard obtaining module is used for obtaining the brightness standard of the LED display screen in the current environment based on the environment comparison result;
and the whole screen brightness adjusting module is used for acquiring the brightness of the current LED display screen and adjusting the whole screen brightness based on the brightness of the current LED display screen and the brightness standard.
9. 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 display screen display adjustment method according to any one of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium, in which a computer program is stored, which computer program, when being executed by a processor, carries out a method of adjusting a display of a display screen according to any one of claims 1 to 7.
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| CN202211222980.0A CN115602099A (en) | 2022-10-08 | 2022-10-08 | Display screen display adjusting method and system, computer equipment and storage medium |
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| CN (1) | CN115602099A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116403511A (en) * | 2023-04-06 | 2023-07-07 | 青岛中兴通轨道交通科技有限公司 | Subway line EL display method and device, computer equipment and storage medium |
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2022
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116403511A (en) * | 2023-04-06 | 2023-07-07 | 青岛中兴通轨道交通科技有限公司 | Subway line EL display method and device, computer equipment and storage medium |
| CN116403511B (en) * | 2023-04-06 | 2024-03-12 | 青岛中兴通轨道交通科技有限公司 | Subway line EL display method and device, computer equipment and storage medium |
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