LED control system for visual effects on the surface of giant spherical buildings

Abstract

The invention discloses an LED control system applied to the visual effects on the surface of a giant spherical building, and relates to the field of LED display technology. The invention comprises a display module, a control module, a communication module, a perception module, an evaluation module and an optimization module; the display module is used for displaying through a plurality of LED units installed on the surface of the spherical building; firstly, the functions that the display module needs to satisfy are determined, including brightness, color range and resolution, so as to determine the LED lamp beads in the LED unit, and determine whether the brightness, color, life and energy efficiency of the LED lamp beads satisfy the functions to be realized; the control module is used for receiving and controlling the display contents of different LED units of the display module; the communication module is used for data transmission between the control module and the display module; the invention, through continuous evaluation and optimization, the system can continuously adapt to the changes in audience needs, maintain the freshness and attractiveness of the displayed contents, and thus gain an advantage in the fierce urban cultural competition.

Description

Technical Field

[0001] The invention relates to the technical field of LED display, in particular to an LED control system applied to visual effects on the surface of a giant ball building. Background Art

[0002] With the development of urban modernization, buildings are not only places to shelter from wind and rain, but also the embodiment of urban culture and technological level. As a unique architectural form, giant spherical buildings often become landmark buildings in cities due to their unique appearance and structure. In order to enhance their visual appeal and information communication capabilities, traditional static decoration can no longer meet the needs of modern cities. Therefore, applying LED display technology to the surface of giant spherical buildings can not only enhance the artistic value of the building through dynamic visual effects and information display, but also enhance its commercial and cultural value.

[0003] Existing LED display technology is quite mature in flat applications, but it still faces challenges in visual effects on curved surfaces, especially spherical building surfaces. The irregularity of the curved surface requires that the LED unit must be able to adapt to the complex building surface while maintaining image clarity and color uniformity. In addition, since the audience may watch from different angles and distances, the display system also needs to be able to dynamically adjust the display content according to the location and number of the audience to ensure the best viewing experience. At present, there is a lack of an LED control system on the market that can monitor the number of viewers in real time and optimize the display effect based on feedback, which limits the potential of giant spherical buildings in visual communication and information display.

[0004] In order to solve the above defects, a technical solution is now provided. Summary of the invention

[0005] The purpose of the present invention is to solve the problems of adaptability, real-time monitoring and dynamic optimization existing in the application of traditional LED display technology on the surface of giant spherical buildings, and to propose an LED control system applied to the visual effects of the surface of giant spherical buildings.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] The LED control system used for the visual effects of the giant ball building surface includes:

[0008] A display module for displaying through a plurality of LED units mounted on the surface of the spherical building;

[0009] A control module, used for receiving and controlling the display contents of different LED units of the display module;

[0010] A communication module, used for data transmission between the control module and the display module;

[0011] A sensing module for real-time monitoring of the number of spectators outside the spherical building;

[0012] An evaluation module, used to evaluate the display effect of the display module and collect audience feedback for comprehensive evaluation;

[0013] The optimization module is used to determine the optimal display effect at different times according to the evaluation results.

[0014] Furthermore, the process of the evaluation module evaluating the display effect of the display module and collecting audience feedback for comprehensive evaluation is as follows:

[0015] First, a basic evaluation is performed on the display effect of the LED unit combination of the display module. Specifically, a basic judgment value is obtained by collecting basic parameters of the display effect for comprehensive evaluation. The basic judgment value is used as a basic evaluation standard for measuring the display effect of the LED unit combination. The larger the basic judgment value, the lower the basic evaluation of the display effect of the LED unit combination.

[0016] Then collect feedback from the audience, specifically through questionnaires, real-time feedback or social media, and revise the basic evaluation based on the feedback; specifically, collect evaluation parameters from the audience feedback and conduct a comprehensive analysis to obtain the revised evaluation value;

[0017] Substitute the obtained revision value into the following formula: The revised comprehensive score is obtained and used as the final judgment of the display effect; where ZPZ is the revised comprehensive score, PJD is the base judgment value, and XPP is the revised evaluation value; is the correction index;

[0018] The corrected comprehensive score is then compared with a preset threshold to determine whether it meets the standard. If it does not meet the standard, an optimization signal is sent to the optimization module for display optimization.

[0019] Furthermore, the specific operation steps of collecting basic parameters of the display effect and performing comprehensive evaluation to obtain the basic judgment value in the evaluation module are as follows:

[0020] Basic parameters include:

[0021] Overall brightness: Monitor the brightness of each LED unit and calculate the average brightness of all LED units in nits. Calculate the absolute value of the difference with the preset standard brightness and record it as the brightness difference value. This brightness difference value is used as the standard for measuring overall brightness.

[0022] Color accuracy: used to evaluate whether the display color of the LED unit is accurate. The display color of each LED unit is collected, measured by sRGB, and recorded as R. The preset standard brightness is R 标, after normalization, enter the following formula: To obtain a color judgment value SPZ, and use the color judgment value SPZ as a standard for measuring the color accuracy of a single LED unit, sum the color judgment values ​​SPZ of all LED units to obtain a color accuracy evaluation value SZL, and use the color accuracy evaluation value SZL as a standard for measuring the color accuracy of all LED units;

[0023] Contrast ratio: Collect the difference between the brightest and darkest pixels in all LED units and record it as the ratio value;

[0024] Response time: Test the time required for each LED unit to switch between different display contents, and calculate the total time required for all LED units to switch between different display contents, and then divide it by the number of all LED units, record it as the response value, and use this response value as the measurement standard for measuring response time;

[0025] Pixel defect rate: Count the number of non-working LED units among several LED units, and calculate the proportion of non-working LED units, which is recorded as the defect rate. This defect rate is used as the standard for measuring pixel defect rate;

[0026] The brightness difference value, color accuracy evaluation value, comparison value, response value and defect rate are normalized and then input into the following formula: To get the basic judgment value PJD, where LC, SZL, BP, XT and QX are brightness difference value, color accuracy evaluation value, ratio judgment value, response value and defect rate respectively. They are the preset weight coefficients for brightness difference value, color accuracy evaluation value, comparison value, response value and defect rate.

[0027] Furthermore, the specific operation steps of collecting evaluation parameters in audience feedback and conducting comprehensive analysis to obtain the revised evaluation value in the evaluation module are as follows:

[0028] Evaluation parameters include:

[0029] Satisfaction score: Analyze the audience's satisfaction score on the display effect of the display module from the collected audience feedback, and calculate the average of the satisfaction scores, which is recorded as the full rating value;

[0030] Visual comfort: The visual comfort of viewers when watching displayed content, including eye fatigue, brightness adaptability and mood pleasure. The audience's eye fatigue, brightness adaptability and mood pleasure are scored through survey items, and the weighted sum is used to obtain a comprehensive score, which is used as the standard for measuring the audience's visual comfort;

[0031] Content attractiveness: audiences’ evaluation of the attractiveness and interest of real content, which is recorded as the attractiveness score and used as a criterion for measuring content attractiveness;

[0032] After normalizing the full rating value, comprehensive score and absorption score, the full rating value is used as the radius to establish the bottom circle, the comprehensive score value is used as the height to establish the cylindrical model, and the absorption rating value is used as the diameter. The center of the bottom circle is used as the center of the sphere to establish a spherical model. The surface area of ​​the irregular body formed by the cylindrical and spherical models is calculated and recorded as the revised rating value.

[0033] Furthermore, the specific operation steps of the display module for displaying by means of a plurality of LED units installed on the surface of a spherical building are as follows:

[0034] Determine the functions that the display module needs to meet, including brightness, color range and resolution, so as to determine the selection of LED lamp beads in the LED unit, including the brightness, color, life and energy efficiency of the LED lamp beads;

[0035] Design the LED units to fit the curved structure of the spherical building, and ensure that each LED unit can be independently controlled by pre-setting the driving circuit;

[0036] Assemble the selected LED units and prepare them for installation. After installation, test each LED unit.

[0037] Plan and connect the power lines and signal lines of each LED unit, and connect the signal lines of the LED units to the control module;

[0038] Install and configure software on the control module to manage display content, create display content according to user needs, including animations, images or videos, upload the created display content to the control module, monitor the operating status of the display module, and ensure the stability of the display effect.

[0039] Furthermore, the specific operation steps for testing each LED unit in the display module are as follows:

[0040] After completing the installation, test each LED unit to ensure there are no problems. The specific process is as follows:

[0041] Visual inspection:

[0042] The surface of the entire spherical building is scanned by the drone camera to obtain surface image data of all LED units;

[0043] Correcting the acquired surface image data to eliminate distortion caused by shooting angle or light, while enhancing the contrast and clarity of the surface image data;

[0044] Use image analysis software to detect anomalies in the image, including missing, misaligned or damaged LED units, combined with manual inspection of surface image data to ensure that no anomalies are missed;

[0045] Record all detected anomalies, including location, type and cause, and mark the location of the abnormal LED unit on the drawing or model of the spherical building;

[0046] Power supply test:

[0047] Connect the power cord of the LED unit to the power supply, power the LED unit, and check the power indicator or a multimeter to check whether the power is flowing normally;

[0048] Functional testing:

[0049] The command control module sends a signal to light up each LED unit, check whether all LED lamp beads can emit light normally, and test whether the LED unit can accurately display various preset colors, including grayscale level testing;

[0050] Environmental adaptability test:

[0051] For LED units installed outdoors, waterproof performance tests are conducted to ensure normal operation in humid or rainy environments, and different temperature conditions are simulated to test the performance and stability of LED units under extreme temperatures;

[0052] For the different tests mentioned above, for any anomalies detected, a technician is arranged to conduct an on-site review to confirm the problem and evaluate the repair plan. For any problems verified on-site, repair or replacement is carried out on-site. After repairing or replacing the abnormal LED unit, a test is carried out to ensure its normal operation and confirm that all anomalies are resolved.

[0053] Furthermore, the specific operation steps of the sensing module to monitor the number of spectators outside the spherical building in real time are as follows:

[0054] Scan the spherical building and its surrounding environment, and build a three-dimensional model of the environment through scanning. Analyze the three-dimensional model of the environment to determine the area that needs to be monitored, and estimate the number of spectators based on the area occupied by the area that needs to be monitored;

[0055] According to the environmental parameters of the monitoring area, select the corresponding monitoring method to timely evaluate the number of spectators, including video analysis, infrared sensing or WiFi tracking; the environmental parameters obtained include: the physical characteristics of the monitoring area, the ambient light conditions and the flow pattern of spectators;

[0056] According to the environmental parameters, each monitoring method is scored, and the total score of all environmental parameters is calculated. The scores of different monitoring methods are compared, and the monitoring method with the highest total score is taken as the optimal monitoring method;

[0057] Then install the corresponding number monitoring equipment in the monitoring area, collect monitoring data, and use statistical or machine learning algorithms to evaluate the number of spectators, and calculate the total number of spectators in all monitoring areas.

[0058] Furthermore, the perception module scans the spherical building and the surrounding environment, establishes a three-dimensional model of the environment through scanning, analyzes the three-dimensional model of the environment, and determines the area that needs to be monitored in the following process:

[0059] First, use laser scanning, 3D photogrammetry or drone-mounted scanning equipment to obtain environmental data. Deploy scanning equipment around the spherical building to ensure that all areas that need to be monitored are covered. Perform the scanning process to collect three-dimensional data of the building and its surrounding environment.

[0060] Preprocess the collected scan data, including filtering, denoising and data cleaning, and use 3D modeling software or algorithms to convert the processed data into a 3D model of the environment. Verify the established 3D model to ensure that the difference between the environment model and the actual environment is less than a preset threshold.

[0061] Analyze the environmental model, identify areas where audiences gather, including entrances, exits, and activity areas, and mark them in the environmental model to provide a reference for subsequent audience monitoring.

[0062] Furthermore, the specific steps of the optimization module determining the optimal display effect at different times according to the evaluation results are as follows:

[0063] Obtain display effect data and audience feedback from the evaluation module, determine the display effect indicators that affect audience satisfaction, and set optimization goals based on the analysis results, including brightness or color improvement;

[0064] Develop and test different display content plans, compare the effects, and adjust the display content based on real-time data to adapt to changes in the number of viewers;

[0065] Analyze and determine the best display content for different audience sizes, and automatically adjust display settings based on the number of viewers;

[0066] Regularly evaluate and update display content to meet audience needs, using audience feedback for ongoing optimization.

[0067] Compared with the prior art, the present invention has the following beneficial effects:

[0068] The present invention realizes comprehensive control and optimization of LED display effects through integrated display modules, control modules, communication modules, perception modules, evaluation modules and optimization modules, can adapt to the complex structure of the spherical building surface, ensure the uniformity of image display and the accuracy of color, improve the quality of display effects, and enhance the visual appeal and information communication capabilities of the building;

[0069] In the present invention, the perception module can monitor the number of spectators in real time, the evaluation module provides a scientific evaluation and optimization basis for the system by comprehensively analyzing the display effect and audience feedback, and the optimization module dynamically adjusts the display content according to the evaluation results to ensure that the best display effect can be achieved under different audience numbers and environmental conditions, thereby improving the viewing experience and satisfaction of the audience, and also increasing the commercial value and cultural influence of the building;

[0070] The present invention not only realizes the innovative application of LED display technology in technology, but also demonstrates its flexibility and adaptability in practical application, providing a new visual display solution for giant spherical buildings. Through continuous evaluation and optimization, the system can continuously adapt to changes in audience needs and maintain the freshness and attractiveness of the displayed content, thereby gaining an advantage in the fierce urban cultural competition. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings;

[0072] Figure 1 This is the overall system block diagram of the present invention. DETAILED DESCRIPTION

[0073] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0074] It should be understood that the terms "include" and "comprising" used in the specification and claims of the present disclosure indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections thereof.

[0075] It should also be understood that the terms used in this disclosure are only for the purpose of describing specific embodiments and are not intended to limit the disclosure. As used in this disclosure and claims, the singular forms of "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise. It should also be further understood that the term "and / or" used in this disclosure and claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0076] like Figure 1As shown, the LED control system applied to the visual effects of the giant ball building surface includes a display module, a control module, a communication module, a perception module, an evaluation module and an optimization module;

[0077] The display module is used for displaying through a plurality of LED units installed on the surface of the spherical building;

[0078] First, determine the functions that the display module needs to meet, including brightness, color range and resolution, so as to determine the LED lamp beads in the LED unit, and determine whether the brightness, color, life and energy efficiency of the LED lamp beads meet the required functions; design the layout and shape of the LED unit so that the LED unit adapts to the curved surface structure of the spherical building surface, and through the preset drive circuit, each LED unit can be independently controlled; assemble the determined LED units to ensure that each LED unit is installed in the correct position on the spherical building surface; after the installation is completed, test each LED unit to ensure that there are no problems. The specific process is as follows:

[0079] Visual inspection:

[0080] Scan the entire surface of the spherical building through the drone camera to obtain the surface image data of all LED units, and correct the obtained surface image data to eliminate distortion caused by shooting angle or light, while enhancing the contrast and clarity of the surface image data; use image analysis software to detect anomalies in the image, such as missing, misplaced or damaged LED units, and combine manual inspection of the surface image data to ensure that no anomalies are missed; record all detected anomalies, including location, type and possible causes, and mark the location of the abnormal LED unit on the drawing or model of the spherical building;

[0081] Power supply test:

[0082] Connect the power cord of the LED unit to the power supply, power the LED unit, and check the power indicator or a multimeter to check whether the power is flowing normally;

[0083] Functional testing:

[0084] The command control module sends a signal to light up each LED unit, check whether all LED lamp beads can emit light normally, and test whether the LED unit can accurately display various preset colors, including grayscale level testing;

[0085] Environmental adaptability test:

[0086] For LED units installed outdoors, waterproof performance tests are conducted to ensure normal operation in humid or rainy environments, and different temperature conditions are simulated to test the performance and stability of LED units under extreme temperatures;

[0087] In response to the above tests, for any abnormalities detected, arrange for technicians to conduct on-site re-inspections, confirm the problems and evaluate the repair plans. For any problems verified on-site, repair or replacement are carried out in a timely manner. After repairing or replacing the abnormal LED unit, test it to ensure its normal operation, confirm that all abnormalities have been resolved, and that the display effect of the LED unit meets the requirements.

[0088] Then plan the power lines and signal lines of each LED unit and connect them to the control module through signal lines. Install and configure the control software to generate and manage display content. Produce display content according to user needs, including animations, images or videos, upload the produced display content to the control module, monitor the operating status of the display module, and ensure the stability of the display effect.

[0089] The control module is used to receive and control the display contents of different LED units of the display module;

[0090] First, determine the functions that need to be supported according to user needs, including LED unit control, brightness and color adjustment, and synchronous display, and select the corresponding processor, memory, and hardware components to meet the processing speed and stability requirements; preset the control software according to the content to be displayed, including the graphic user interface, control logic, and communication protocol, integrate the software into the selected hardware, and conduct preliminary testing. At the same time, test different functions to ensure that the control module can correctly control each LED unit; upload and manage display content such as images, videos, or animations through the user interface, control the brightness, color, and display mode of different LED units in real time, monitor the operating status of the control module, and record operation logs; diagnose control module failures, including hardware failures and software errors, and take necessary measures to restore the normal operation of the control module; regularly back up the data and settings of the control module for rapid recovery of data and settings in case of failure.

[0091] The communication module is used for data transmission between the control module and the display module;

[0092] According to the data transmission requirements between the control module and the display module, including data volume, transmission speed and real-time requirements, determine the corresponding communication technology, including wireless communication (Wi-Fi, Bluetooth, ZigBee, 4G / 5G, etc.) or wired communication (Ethernet, serial communication, etc.), and then determine the communication protocol, including data packet format, transmission control, error detection and correction mechanism; install the corresponding hardware equipment according to the determined communication technology, including wireless module, antenna, Ethernet interface, etc., and integrate the communication hardware into the control module and display module;

[0093] Based on the communication hardware, select compatible drivers and implement the software part of the communication protocol, including data encapsulation, transmission control and error handling; configure the communication network, including IP address allocation, network topology, etc., conduct communication tests, verify the stability, speed and reliability of data transmission, diagnose communication problems such as signal interference or hardware failure based on the communication test, and repair or optimize according to the diagnosed problems.

[0094] The sensing module is used to monitor the number of spectators outside the spherical building in real time;

[0095] Scan the spherical building and its surrounding environment, and build a three-dimensional model of the environment through scanning. Analyze the three-dimensional model of the environment to determine the area that needs to be monitored, and evaluate the number of spectators based on the area occupied by the area that needs to be monitored. The specific steps are as follows:

[0096] First, use laser scanning (LiDAR), 3D photogrammetry or scanning equipment carried by drones to obtain environmental data. Deploy scanning equipment around the spherical building to ensure that all areas that need to be monitored are covered. Perform the scanning process to collect three-dimensional data of the building and its surrounding environment; pre-process the collected scan data, including filtering, denoising and data cleaning, and use three-dimensional modeling software or algorithms to convert the processed data into a three-dimensional model of the environment. Verify the established three-dimensional model to ensure that the difference between the environmental model and the actual environment is less than the preset threshold; the steps for setting the preset threshold are as follows:

[0097] Preliminary testing: Before the project starts, conduct a small-scale test to evaluate the scanning accuracy under different settings; Data analysis: Analyze the test data to determine the error distribution and statistical characteristics of the data; Set the threshold: According to the analysis results, set a reasonable threshold to ensure that the accuracy of the model meets the requirements in most cases; Verification and adjustment: In actual applications, verify the model, and make necessary adjustments if the error exceeds the preset threshold. It should be noted that in actual applications, the preset threshold is determined through experiments, data analysis and project requirements. This threshold may be an error range in centimeters or millimeters. The specific value depends on the specific requirements of the project and the capabilities of the scanning technology.

[0098] Analyze the environmental model, identify areas where audiences gather, including entrances, exits, and activity areas, and mark them in the environmental model to provide a reference for subsequent audience monitoring.

[0099] According to the environmental parameters of the monitoring area, select the corresponding monitoring method to timely evaluate the number of viewers, including video analysis, infrared sensing or WiFi tracking. The specific process is as follows:

[0100] Get the following environment parameters:

[0101] Physical characteristics of the monitoring area: for example, the size, shape and density of the area; for wide doorways or open areas, video analysis may be a good choice because it can cover a wider area and provide detailed information on the dynamics of the flow of people; for smaller or specific monitoring areas, infrared sensing or WiFi tracking may be more appropriate; ambient lighting conditions: the effect of video analysis may vary under different lighting conditions; if the lighting conditions in the monitoring area are not ideal, you may need to consider using infrared sensing technology because it can work in a dimly lit environment; audience flow pattern: consider the flow pattern and direction of the audience; if you need to monitor one-way flow, such as entrances or exits, infrared sensing may be simpler and more effective; if you need to monitor two-way flow or more complex flow patterns, video analysis or WiFi tracking may be more suitable;

[0102] Based on the above environmental parameters, each monitoring method is scored, and the total score of all environmental parameters is calculated. The comprehensive scores of different monitoring methods are compared, and the monitoring method with the highest total score is taken as the optimal monitoring method.

[0103] Then install the corresponding number monitoring equipment in the monitoring area, collect monitoring data, and use statistical or machine learning algorithms to evaluate the number of spectators, and calculate the total number of spectators in all monitoring areas.

[0104] The evaluation module is used to evaluate the display effect of the display module and collect audience feedback for comprehensive evaluation;

[0105] First, a basic evaluation is conducted on the combined display effect of the LED units of the display module. Specifically, a comprehensive evaluation is conducted by collecting the basic parameters of the display effect. The basic parameters include:

[0106] Overall brightness: monitor the brightness of each LED unit, and calculate the average brightness of all LED units in nits, and calculate the absolute value of the difference with the preset standard brightness, which is recorded as the brightness difference value, and this brightness difference value is used as the standard for measuring overall brightness; Color accuracy: used to evaluate whether the display color of the LED unit is accurate, collect the display color of each LED unit, measure it through sRGB, and record it as R. The preset standard brightness is R 标 , after normalization, enter the following formula: To obtain the color judgment value SPZ, and use the color judgment value SPZ as the standard for measuring the color accuracy of a single LED unit. The color judgment values ​​SPZ of all LED units are summed to obtain the color accuracy evaluation value SZL, and this color accuracy evaluation value SZL is used as the standard for measuring the color accuracy of all LED units; Contrast: by collecting the difference between the brightest and darkest pixels in all LED units, and recording it as the contrast value; Response time: Test the time required for each LED unit to switch different display contents, and calculate the sum of the time required for all LED units to switch different display contents, and then divide it by the number of all LED units, record it as the response value, and use this response value as the measure of response time; Pixel defect rate: Count the number of non-working LED units in a number of LED units, and calculate the proportion of non-working LED units, record it as the defect rate, and use this defect rate as the standard for measuring pixel defect rate;

[0107] The brightness difference value, color accuracy evaluation value, comparison value, response value and defect rate are normalized and then input into the following formula: To get the basic judgment value PJD, where LC, SZL, BP, XT and QX are brightness difference value, color accuracy evaluation value, ratio judgment value, response value and defect rate respectively. They are preset weight coefficients for brightness difference value, color accuracy evaluation value, ratio judgment value, response value and defect rate, and the obtained base judgment value PJD is used as the basic evaluation standard for measuring the display effect of the LED unit combination. The larger the base judgment value PJD is, the lower the basic evaluation of the display effect of the LED unit combination is.

[0108] Then collect audience feedback, specifically through questionnaires, real-time feedback or social media, and revise the basic evaluation based on the feedback; specifically, make a comprehensive judgment by collecting evaluation parameters from audience feedback, including:

[0109] Satisfaction score: analyze the audience's satisfaction score on the display effect of the display module from the collected audience feedback, and calculate the average of the satisfaction score, which is recorded as the full score; Visual comfort: the visual comfort of the audience when watching the displayed content, including eye fatigue, brightness adaptability and mood pleasure. The audience's eye fatigue, brightness adaptability and mood pleasure are scored through survey items, and the weighted sum is used to obtain a comprehensive score, and this comprehensive score is used as a standard for measuring the audience's visual comfort; Content attractiveness: the audience's evaluation of the attractiveness and interest of real content, and recorded as the attraction score, which is used as a standard for measuring the attractiveness of the content; After normalizing the obtained full score, comprehensive score and attraction score, the full score is used as the radius to establish a bottom circle, the comprehensive score is used as the height to establish a cylindrical model, and the attraction score is used as the diameter. The center of the bottom circle is used as the center of the sphere to establish a spherical model, and the surface area of ​​the heteromorphic body formed by the cylinder and the spherical model is calculated, which is recorded as the revised evaluation value.

[0110] Substitute the obtained revision value into the following formula: The revised comprehensive score is obtained and used as the final judgment of the display effect; where ZPZ is the revised comprehensive score, PJD is the base judgment value, and XPP is the revised evaluation value; is the correction index.

[0111] Then the corrected comprehensive score is compared with the preset threshold to determine whether it meets the standard. If it does not meet the standard, the optimization signaling is sent to the optimization module for display optimization. The setting process of the preset threshold is as follows:

[0112] The preset thresholds are based on several factors:

[0113] User experience: Set a threshold that meets the needs of most users based on audience expectations and past feedback;

[0114] Technical specifications: Specifications and capabilities of LED display technology, including brightness, color accuracy, contrast, response time, and pixel defect rate;

[0115] Environmental factors: Considering that the giant ball building may be located in different environments, such as indoors and outdoors, with different lighting conditions, etc., these factors will affect the display effect and the required threshold;

[0116] Cost-effectiveness: While ensuring the display effect, the cost should also be taken into consideration. Too high a threshold may lead to unnecessary high cost investment.

[0117] Industry Standards: Reference standards and best practices from other similar systems in the industry.

[0118] The specific threshold setting is determined through experiments and data analysis. For example, a series of tests can be conducted to collect audience feedback and display effect data under different settings, and then the data can be analyzed to determine an appropriate threshold, which can be a range rather than a fixed value to adapt to different conditions and needs.

[0119] In actual operation, the preset thresholds need to be adjusted regularly to adapt to changes in audience tastes, technological advances, and changes in environmental conditions. In addition, the preset thresholds can also be dynamically adjusted according to different times (such as day and night) and different events (such as special festivals or events).

[0120] The optimization module is used to determine the optimal display effect at different times according to the evaluation results;

[0121] When the optimization signaling of the evaluation module is collected, the improvement suggestions are analyzed from the collected audience feedback, and different content is displayed in different audience numbers. The best effect is determined in which audience number range the content is displayed, and continuous optimization is performed. The specific process is as follows:

[0122] Obtain detailed data on display effects from the evaluation module, including audience satisfaction, visual comfort, image clarity, etc., and analyze direct feedback from viewers, including questionnaire results, real-time feedback, and social media comments; identify key indicators, determine which display effect indicators have the greatest impact on audience satisfaction, and set specific optimization goals based on the analysis results, such as increasing brightness, improving color uniformity, or increasing interactivity; formulate different display content plans to test display effects under different audience numbers, implement A / B testing in actual environments, and compare the effects of different plans; monitor display effects and audience reactions in real time, and dynamically adjust display content based on real-time data to adapt to changes in the number of viewers; the specific process of quickly responding to changes in the number of viewers is as follows:

[0123] Real-time data collection: Use sensors and cameras in the perception module to monitor the number and distribution of audiences in real time, collect instant feedback from the audience through real-time feedback devices (such as touch screens, voting buttons, etc.) installed in the LED display area, and use social media monitoring tools to collect and analyze audience comments and feedback on social media in real time.

[0124] Data processing and analysis: Use high-speed data processing systems, such as edge computing devices, to instantly process and analyze the collected data, and use machine learning algorithms to perform sentiment analysis on audience feedback to assess audience satisfaction and preferences;

[0125] Dynamic content adjustment: Dynamically adjust display content based on real-time analysis results, such as brightness, color, contrast and other parameters, to achieve dynamic switching of content, such as increasing brightness when the number of viewers is detected to increase, or showing specific content in a specific time period;

[0126] Automated control: Using preset rules and algorithms, automatically adjust display settings such as brightness, contrast, and content switching based on real-time data, set different audience thresholds, and trigger different display strategies, such as showing more detailed information when the audience is small and showing more eye-catching visual effects when the audience is large;

[0127] System feedback loop: Establish a closed-loop feedback system to feed back the results of real-time monitoring to the evaluation module, continuously optimize the display effect, regularly evaluate and update the display content, and ensure that the system can adapt to changes in audience needs.

[0128] Determine in which audience size ranges, specific display content is most effective, set audience size thresholds based on the analysis results to trigger different display strategies, formulate specific display content and parameter settings for different audience size ranges, and use the control module to automatically adjust the display settings based on the real-time audience size.

[0129] Regularly re-evaluate display effects and audience feedback to ensure that audience needs continue to be met, update display content based on evaluation results and latest trends, and establish a feedback mechanism to use the collected feedback to continuously optimize display effects.

[0130] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The LED control system used for the visual effects of giant ball buildings is characterized by: include: A display module for displaying through a plurality of LED units mounted on the surface of the spherical building; A control module, used for receiving and controlling the display contents of different LED units of the display module; A communication module, used for data transmission between the control module and the display module; A sensing module for real-time monitoring of the number of spectators outside the spherical building; The evaluation module is used to evaluate the display effect of the display module and collect audience feedback for comprehensive evaluation. The specific process is as follows: First, a basic evaluation is performed on the display effect of the LED unit combination of the display module. Specifically, a basic judgment value is obtained by collecting basic parameters of the display effect for comprehensive evaluation. The basic judgment value is used as a basic evaluation standard for measuring the display effect of the LED unit combination. The larger the basic judgment value, the lower the basic evaluation of the display effect of the LED unit combination. Then collect feedback from the audience, specifically through questionnaires, real-time feedback or social media, and revise the basic evaluation based on the feedback; specifically, collect evaluation parameters from the audience feedback and conduct a comprehensive analysis to obtain the revised evaluation value; Substitute the obtained revision value into the following formula: The revised comprehensive score is obtained and used as the final judgment of the display effect; where ZPZ is the revised comprehensive score, PJD is the base judgment value, and XPP is the revised evaluation value; is the correction index; The corrected comprehensive score is then compared with the preset threshold to determine whether it meets the standard. If it does not meet the standard, the optimization signaling is sent to the optimization module for display optimization; The optimization module is used to determine the optimal display effect at different times according to the evaluation results.

2. The LED control system for the surface visual effects of a giant ball building according to claim 1 is characterized in that: The specific operation steps of the evaluation module to collect basic parameters of the display effect for comprehensive evaluation to obtain the basic judgment value are as follows: Basic parameters include: Overall brightness: Monitor the brightness of each LED unit and calculate the average brightness of all LED units in nits. Calculate the absolute value of the difference with the preset standard brightness and record it as the brightness difference value. This brightness difference value is used as the standard for measuring overall brightness. Color accuracy: used to evaluate whether the display color of the LED unit is accurate. The display color of each LED unit is collected, measured by sRGB, and recorded as R. The preset standard brightness is R 标 , after normalization, enter the following formula: To obtain a color judgment value SPZ, and use the color judgment value SPZ as a standard for measuring the color accuracy of a single LED unit, sum the color judgment values ​​SPZ of all LED units to obtain a color accuracy evaluation value SZL, and use the color accuracy evaluation value SZL as a standard for measuring the color accuracy of all LED units; Contrast ratio: Collect the difference between the brightest and darkest pixels in all LED units and record it as the ratio value; Response time: Test the time required for each LED unit to switch between different display contents, and calculate the total time required for all LED units to switch between different display contents, and then divide it by the number of all LED units, record it as the response value, and use this response value as the measurement standard for measuring response time; Pixel defect rate: Count the number of non-working LED units among several LED units, and calculate the proportion of non-working LED units, which is recorded as the defect rate. This defect rate is used as the standard for measuring pixel defect rate; The brightness difference value, color accuracy evaluation value, comparison value, response value and defect rate are normalized and then input into the following formula: To get the basic judgment value PJD, where LC, SZL, BP, XT and QX are brightness difference value, color accuracy evaluation value, ratio judgment value, response value and defect rate respectively. They are the preset weight coefficients for brightness difference value, color accuracy evaluation value, comparison value, response value and defect rate.

3. The LED control system for the visual effect of the giant ball building surface according to claim 1 is characterized in that: The specific operation steps of collecting evaluation parameters from audience feedback and conducting comprehensive analysis to obtain the revised evaluation value in the evaluation module are as follows: Evaluation parameters include: Satisfaction score: Analyze the audience's satisfaction score on the display effect of the display module from the collected audience feedback, and calculate the average of the satisfaction scores, which is recorded as the full rating value; Visual comfort: The visual comfort of viewers when watching displayed content, including eye fatigue, brightness adaptability and mood pleasure. The audience's eye fatigue, brightness adaptability and mood pleasure are scored through survey items, and the weighted sum is used to obtain a comprehensive score, which is used as the standard for measuring the audience's visual comfort; Content attractiveness: audiences’ evaluation of the attractiveness and interest of real content, which is recorded as the attractiveness score and used as a criterion for measuring content attractiveness; After normalizing the full rating value, comprehensive score and absorption score, the full rating value is used as the radius to establish the bottom circle, the comprehensive score value is used as the height to establish the cylindrical model, and the absorption rating value is used as the diameter. The center of the bottom circle is used as the center of the sphere to establish a spherical model. The surface area of ​​the irregular body formed by the cylindrical and spherical models is calculated and recorded as the revised rating value.

4. The LED control system for the surface visual effects of a giant ball building according to claim 1 is characterized in that: The specific operation steps of the display module for displaying by means of multiple LED units installed on the surface of the spherical building are as follows: Determine the functions that the display module needs to meet, including brightness, color range and resolution, so as to determine the selection of LED lamp beads in the LED unit, including the brightness, color, life and energy efficiency of the LED lamp beads; Design the LED units to fit the curved structure of the spherical building, and ensure that each LED unit can be independently controlled by pre-setting the driving circuit; Assemble the selected LED units and prepare them for installation. After installation, test each LED unit. Plan and connect the power lines and signal lines of each LED unit, and connect the signal lines of the LED units to the control module; Install and configure software on the control module to manage display content, create display content according to user needs, including animations, images or videos, upload the created display content to the control module, monitor the operating status of the display module, and ensure the stability of the display effect.

5. The LED control system for the surface visual effects of a giant ball building according to claim 4 is characterized in that: The specific operation steps for testing each LED unit in the display module are as follows: After completing the installation, test each LED unit to ensure there are no problems. The specific process is as follows: Visual inspection: The surface of the entire spherical building is scanned by the drone camera to obtain surface image data of all LED units; Correcting the acquired surface image data to eliminate distortion caused by shooting angle or light, while enhancing the contrast and clarity of the surface image data; Use image analysis software to detect anomalies in the image, including missing, misaligned or damaged LED units, combined with manual inspection of surface image data to ensure that no anomalies are missed; Record all detected anomalies, including location, type and cause, and mark the location of the abnormal LED unit on the drawing or model of the spherical building; Power supply test: Connect the power cord of the LED unit to the power supply, power the LED unit, and check the power indicator or a multimeter to check whether the power is flowing normally; Functional testing: The command control module sends a signal to light up each LED unit, check whether all LED lamp beads can emit light normally, and test whether the LED unit can accurately display various preset colors, including grayscale level testing; Environmental adaptability test: For LED units installed outdoors, waterproof performance tests are conducted to ensure normal operation in humid or rainy environments, and different temperature conditions are simulated to test the performance and stability of LED units under extreme temperatures; For different tests, for any abnormalities detected, technicians are arranged to conduct on-site re-inspections, confirm the issues and evaluate the repair solutions. For any issues verified on-site, repairs or replacements are performed on-site. After repairing or replacing the abnormal LED unit, tests are performed to ensure that it is functioning properly and to confirm that all abnormalities have been resolved.

6. The LED control system for the surface visual effects of a giant ball building according to claim 1 is characterized in that: The specific operation steps of the sensing module to monitor the number of spectators outside the spherical building in real time are as follows: Scan the spherical building and its surrounding environment, and build a three-dimensional model of the environment through scanning. Analyze the three-dimensional model of the environment to determine the area that needs to be monitored, and estimate the number of spectators based on the area occupied by the area that needs to be monitored; According to the environmental parameters of the monitoring area, select the corresponding monitoring method to timely evaluate the number of spectators, including video analysis, infrared sensing or WiFi tracking; the environmental parameters obtained include: physical characteristics of the monitoring area, ambient lighting conditions and spectator flow patterns; According to the environmental parameters, each monitoring method is scored, and the total score of all environmental parameters is calculated. The scores of different monitoring methods are compared, and the monitoring method with the highest total score is taken as the optimal monitoring method; Then install the corresponding number monitoring equipment in the monitoring area, collect monitoring data, and use statistical or machine learning algorithms to evaluate the number of spectators, and calculate the total number of spectators in all monitoring areas.

7. The LED control system for the surface visual effects of a giant ball building according to claim 6 is characterized in that: The sensing module scans the spherical building and the surrounding environment, establishes a three-dimensional model of the environment through scanning, analyzes the three-dimensional model of the environment, and determines the area that needs to be monitored. The process is as follows: First, use laser scanning, 3D photogrammetry or drone-mounted scanning equipment to obtain environmental data. Deploy scanning equipment around the spherical building to ensure that all areas that need to be monitored are covered. Perform the scanning process to collect three-dimensional data of the building and its surrounding environment. Preprocess the collected scan data, including filtering, denoising and data cleaning, and use 3D modeling software or algorithms to convert the processed data into a 3D model of the environment. Verify the established 3D model to ensure that the difference between the environment model and the actual environment is less than a preset threshold. Analyze the environmental model, identify areas where audiences gather, including entrances, exits, and activity areas, and mark them in the environmental model to provide a reference for subsequent audience monitoring.

8. The LED control system for the surface visual effects of a giant ball building according to claim 1 is characterized in that: The specific steps of the optimization module determining the optimal display effect at different times according to the evaluation results are as follows: Obtain display effect data and audience feedback from the evaluation module, determine the display effect indicators that affect audience satisfaction, and set optimization goals based on the analysis results, including brightness or color improvement; Develop and test different display content plans, compare the effects, and adjust the display content based on real-time data to adapt to changes in the number of viewers; Analyze and determine the best display content for different audience sizes, and automatically adjust display settings based on the number of viewers; Regularly evaluate and update display content to meet audience needs, using audience feedback for ongoing optimization.

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