Energy-saving control method and device for LED special-shaped screen

Abstract

The invention relates to the field of LED display control, in particular to an energy-saving control method and device for an LED special-shaped screen. The energy-saving control method of the LED special-shaped screen comprises the following steps: dividing a dynamic region and a static region; acquiring environment illumination intensity data, and calculating an environment illumination mapping value; calculating the target display brightness of the dynamic region and the target display brightness of the pixels of the static region; acquiring smooth display brightness; and adjusting the brightness of the LED special-shaped screen. According to the method, the perception brightness values of different pixels are calculated, the brightness adjusting range of the pixels is finely adjusted, meanwhile, reasonable consumption of the calculation amount is considered, the dynamic area and the static area are divided for the LED special-shaped screen, overall brightness adjustment is carried out on the dynamic area, and the brightness of each pixel in the static area is accurately controlled; the dynamic and static boundaries are smoothed, so that the authenticity and consistency of colors are kept visually; the brightness adjustment based on content awareness not only improves the watching experience, but also further optimizes the use efficiency of energy.

Description

Technical Field

[0001] The invention relates to the field of LED display control, and in particular to an energy-saving control method and device for an LED special-shaped screen. Background Art

[0002] With the rapid development of LED display technology, LED special-shaped screens have been widely used in advertising, entertainment, sports events and other fields due to their unique shape and flexible display effects; however, the high energy consumption of LED special-shaped screens has always been the main bottleneck restricting their widespread application; traditional LED display devices mainly rely on simple brightness adjustment for energy saving, ignoring the brightness differences of different colors in human eye perception. This method often cannot adapt well to changes in ambient light, resulting in difficulty in achieving a balance between display effect and energy saving efficiency.

[0003] At present, the energy-saving technologies of LED special-shaped screens mainly adopt the following methods: static brightness adjustment, which is uniformly adjusted according to the preset brightness value, but this method lacks adaptability to ambient light; ambient light sensing, which adjusts the screen brightness by sensing the intensity of ambient light, but mostly adopts a simple linear relationship and cannot accurately control the matching of brightness and ambient light; regional brightness control, which adjusts the brightness of different areas of the screen, but usually ignores the dynamic characteristics of the screen content and the visual perception differences; these technologies can reduce energy consumption to a certain extent, but there are still the following problems: most energy-saving control methods do not take into account the perceived brightness differences of different colors in the human eye, resulting in a conflict between energy-saving effects and visual experience; the lack of in-depth analysis of color characteristics leads to a brightness adjustment strategy that is too simple and cannot meet the display requirements of different color content.

[0004] In view of the above problems, the present invention proposes an energy-saving control method for LED special-shaped screens based on content perception and environmental adaptation; the method realizes fine adjustment of display brightness by analyzing the perceived brightness of the displayed content, and combines the real-time monitoring of ambient light intensity to achieve more accurate and intelligent brightness adjustment; in addition, by introducing smooth display technology, the display quality is further improved, meeting the dual needs of modern LED special-shaped screens in terms of energy saving and display effects. Summary of the invention

[0005] The present invention calculates the perceived brightness values ​​of different pixels and finely adjusts the brightness adjustment range of the pixels. Taking into account the reasonable consumption of calculation amount, the present invention distinguishes the dynamic area and the static area of ​​the LED special-shaped screen, performs a simple overall brightness adjustment on the dynamic area, and accurately controls the brightness of each pixel in the static area. The boundary part of the static area and the dynamic area is smoothed, so as to visually maintain the authenticity and consistency of the color. This brightness adjustment based on content perception not only improves the viewing experience, but also further optimizes the energy efficiency.

[0006] The energy-saving control method of LED special-shaped screen includes: Based on the display content of the LED special-shaped screen, the LED special-shaped screen is divided into a dynamic area and a static area, and the part of the static area close to the boundary of the dynamic area is marked as the boundary part; According to the adjustable range of display brightness of the LED special-shaped screen, the display brightness of the LED special-shaped screen is mapped to [0, 1], where 0 and 1 correspond to the lowest value and the highest value of the adjustable range of display brightness of the LED special-shaped screen, respectively; Acquire ambient light intensity data at the current environmental monitoring time point, and calculate and acquire an ambient light mapping value based on the acquired ambient light intensity data; For the dynamic area, the currently acquired ambient light mapping value is applied to the display brightness of the dynamic area using a dynamic calculation method to obtain the target display brightness of the dynamic area; For any pixel in the static area, read the RGB value of the pixel, calculate the perceived brightness value of the pixel based on the RGB value, and use the acquired perceived brightness value to calculate the brightness adjustment range of the pixel; apply the currently acquired ambient light mapping value to the brightness adjustment range of the pixel using a static calculation method to obtain the target display brightness of the pixel; For any pixel in the boundary part of the static area, based on the target display brightness currently obtained for the pixel and the target display brightness of the dynamic area, a smooth display brightness of the pixel is calculated and obtained; The target display brightness of the dynamic area, the target display brightness of all pixels in the static area, and the smooth display brightness are obtained by the application to adjust the brightness of the LED special-shaped screen.

[0007] Preferably, the specific operation of calculating and obtaining the ambient light mapping value based on the obtained ambient light intensity is: Set the adjustable range of ambient light intensity , and in the adjustable range Set several intervals evenly within the environment; obtain the ambient light intensity data at the current environmental monitoring time point , determine whether the ambient light intensity data E obtained at the current environmental monitoring time point is in a different range from the ambient light intensity data obtained at the previous environmental monitoring time point. If so, use the formula Calculate and obtain the ambient light mapping value ; If not, no action is taken.

[0008] Preferably, the specific operation of using a dynamic calculation method for the display brightness of the dynamic area to obtain the target display brightness of the dynamic area includes: Apply the most recently calculated ambient light map value , using the formula Calculate and obtain the display brightness of dynamic area targets ,in is the first correction coefficient, Between (1, 2), Used to control the dynamic area target display brightness In the environment light mapping value Increases while increasing, dynamic area target display brightness The growth rate is gradually accelerating.

[0009] Preferably, the specific operation of calculating and acquiring the perceived brightness value based on the RGB value of the pixel in the static area, and calculating the brightness adjustment range of the pixel using the acquired perceived brightness value includes: For any pixel in the static area, read the values ​​of the red, green, and blue channels of the pixel, which are recorded as , , ; Using the formula Calculate the perceived brightness value of the pixel ; Based on the perceived brightness value of the pixel , using the formula Calculate the upper limit of the brightness adjustment range of the obtained pixel , where x represents the lower limit of the range, Between (0, 1), when the perceived brightness value of the pixel When it is 0, the upper limit of the brightness adjustment range of the pixel That is , The value of is obtained through the swarm optimization algorithm; is the second correction coefficient, Between (0, 1), Used to control the upper limit of the brightness adjustment range With perceived brightness value The upper limit of the brightness adjustment range increases with the increase of The growth rate gradually slowed down.

[0010] Preferably, the specific operation of using the static calculation method for the display brightness of the static area includes: For any pixel in the static area, apply the most recently calculated ambient light map value , and based on the upper limit of the brightness adjustment range of the pixel , using the formula Calculate the target display brightness of the acquired pixel ,in Used to control the display brightness of the pixel target In the environment light mapping value When the target is increased, the brightness The growth rate is gradually accelerating.

[0011] Preferably, the specific operation of calculating the smooth display brightness is: For any pixel in the boundary part, the target display brightness of the pixel is calculated based on the target display brightness of the pixel. , using the formula Calculate the smooth display brightness of the pixel ,in, is the smoothing coefficient, Between (0, 1), The size of depends on the distance between the pixel and the dynamic area. The smaller the distance between the pixel and the dynamic area, The closer the value is to 1.

[0012] Preferably, the calculation The population optimization algorithm used for the value of is a genetic algorithm, and the specific operations are: A1: Set the population size and randomly generate n candidates in the range of (0, 1) value, n candidates will be randomly generated The values ​​form the initial population and set the maximum number of iterations; A2: For any candidate x value, use the formula Calculate the candidate The fitness F of the value, where It indicates the visual deviation value generated by applying the candidate x value to adjust the brightness of the LED special-shaped screen. and Candidates The reciprocal of the value and the visual deviation value The weight coefficient of the reciprocal of The optimization goal of the value is to minimize The value and the minimum visual deviation value; the higher the fitness calculated, the better the candidate The better the value is, A3: Apply the roulette wheel selection method to select the corresponding number of candidates with the best fitness performance at a preset selection ratio value, the selected candidate The value composition selects the set of individuals; A4: Apply the preset crossover probability to select candidates from the individual set The values ​​are cross-operated to generate the corresponding number of new candidates Value, the new candidate to be obtained The values ​​form a crossover set; candidates are randomly selected from the crossover set value, and the candidate The value is slightly adjusted, and the adjusted crossover individual set is the variant individual set; A5: Merge the selected individual set and the variant individual set to obtain the merged individual set, and calculate all the candidate The fitness of the value, the n candidates with the best fitness performance Value as the new generation population; A6: Repeat steps A3 to A5 to iteratively update the population until the maximum number of iterations is reached. The population with the best fitness in the last generation is the optimal one. value.

[0013] Preferably, an energy-saving control device for a special-shaped LED screen is applied to any of the above-mentioned energy-saving control methods for a special-shaped LED screen.

[0014] The present invention has the following advantages: 1. The present invention calculates the perceived brightness values ​​of different pixels and finely adjusts the brightness adjustment range of pixels. Taking into account the reasonable consumption of calculation, the present invention distinguishes between dynamic and static areas for the LED special-shaped screen, performs simple overall brightness adjustment on the dynamic area, and accurately controls the brightness of each pixel in the static area. The boundary between the static area and the dynamic area is smoothed, thereby visually maintaining the authenticity and consistency of the color. This content-based brightness adjustment not only improves the viewing experience, but also further optimizes the energy efficiency.

[0015] 2. The present invention monitors the ambient light intensity in real time, takes into account the nonlinear changes in the human eye's perception of ambient light, and maps it to the adjustment of the display brightness of the LED special-shaped screen, thereby achieving synchronization between energy-saving control and environmental changes; this method not only reduces energy consumption, but also ensures a clear and comfortable visual experience under different lighting conditions by dynamically adjusting the brightness; the enhancement of environmental adaptability enables the LED special-shaped screen to maintain high-quality display effects while saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a flowchart of an energy-saving control method for an LED special-shaped screen adopted in an embodiment of the present invention. DETAILED DESCRIPTION

[0017] In order to enable persons skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0018] Embodiment, energy-saving control method of LED special-shaped screen, such as Figure 1 As shown, including: Based on the display content of the LED special-shaped screen, the LED special-shaped screen is divided into a dynamic area and a static area, and then the part of the static area close to the boundary of the dynamic area is marked as the boundary part, and the boundary part is the pixel close to the edge of the dynamic area in the static area; these pixels visually connect the dynamic and static areas, and need special processing to avoid sudden changes in brightness and color, so as to maintain the smoothness and consistency of the overall display; since the brightness adjustment method for the static area of ​​the present invention involves a large amount of calculation, it is not applicable to the dynamic area that changes frequently; and for the dynamic area, although the amount of calculation is large, it only needs to be calculated once, and it can be applied all the time in the future; by distinguishing between dynamic and static areas, different brightness adjustment strategies can be applied in a targeted manner to avoid uniform brightness adjustment of the entire screen, thereby reducing the amount of calculation and processing time; at the same time, in addition to reducing the amount of calculation, the dynamic area may need to maintain a higher brightness to ensure the visual effect due to frequent changes in content; and the static area can appropriately reduce the brightness due to the unchanged content, thereby saving energy; by specially processing the boundary part, the brightness or color difference that may occur between the dynamic and static areas can be reduced, and the overall visual comfort and display quality can be improved; According to the adjustable brightness range of the LED special-shaped screen, the display brightness of the LED special-shaped screen is mapped to [0, 1]. This is a standardized processing method, which allows us to process and compare different brightness values ​​in a unified and simplified way, because all brightness values ​​are converted to the same scale. At the same time, the use of standardized brightness values ​​can make it easier to implement the logic of the algorithm. 0 and 1 correspond to the lowest and highest values ​​of the adjustable brightness range of the LED special-shaped screen respectively. The ambient light intensity data is obtained at the current environmental monitoring time point. The obtained ambient light intensity data is a specific value, usually in lux, which indicates the brightness level of the ambient light. When the ambient light is bright, the screen brightness can be appropriately reduced to reduce energy consumption; when the ambient light is dark, the brightness can be appropriately increased to ensure the display effect. The ambient light mapping value is calculated based on the obtained ambient light intensity data. The calculation of the ambient light mapping value is the basis for realizing the intelligent control of LED special-shaped screens and provides the necessary input parameters for the subsequent brightness adjustment algorithm. For dynamic areas, the currently acquired ambient light mapping value is applied to the display brightness of the dynamic area using a dynamic calculation method to obtain the target display brightness of the dynamic area. By adjusting the brightness according to the ambient light intensity, the brightness can be reduced when the ambient light is strong to reduce energy consumption, and the brightness can be appropriately increased when the ambient light is weak to maintain the display effect; at the same time, dynamic adjustment of brightness helps to maintain the clarity and visibility of the content under different lighting conditions, avoiding the viewing experience affected by too high or too low brightness; For any pixel in the static area, read the RGB value of the pixel. These values ​​together determine the color and brightness of the pixel. The perceived brightness value of the pixel is calculated based on the RGB value. Perceived brightness refers to the human eye's ability to perceive the brightness of different colors. Usually, red and green contribute more to brightness than blue. The brightness adjustment range of the pixel is calculated using the acquired perceived brightness value. This range determines the maximum range in which the pixel brightness can be adjusted. Apply the currently acquired ambient light mapping value to use a static calculation method within the brightness adjustment range of the pixel. This method takes into account the ambient light and the perceived brightness of the pixel to obtain the target display brightness of the pixel. The static calculation method allows personalized brightness adjustment for each pixel to adapt to its position on the screen and content characteristics. For any pixel in the boundary part of the static area, its target display brightness has been calculated based on its RGB value and perceived brightness value; at the same time, each pixel in the dynamic area also has its corresponding target display brightness, and the smooth display brightness of the pixel is calculated based on the target display brightness currently obtained by the pixel and the target display brightness of the dynamic area; by calculating the smooth display brightness, the sudden change in brightness between the static area and the dynamic area can be reduced, making the viewer's visual transition more natural; smooth brightness adjustment helps to create visual coherence between different areas of the screen and avoid the dividing line effect caused by brightness differences; especially in the case of mixed display of dynamic and static content such as the present invention, smooth brightness transition can provide a more comfortable and pleasant viewing experience; this method embodies the intelligent processing capability of LED special-shaped screens, and can automatically adjust the brightness according to the screen content and environmental conditions, reducing manual intervention; The target display brightness of the dynamic area, the target display brightness of all pixels in the static area and the smooth display brightness are obtained by the application to adjust the brightness of the LED special-shaped screen to ensure that the brightness distribution of the entire screen meets both energy-saving requirements and visual comfort and display effects.

[0019] The specific operation of obtaining the ambient light mapping value based on the obtained ambient light intensity calculation is as follows: Set the adjustable range of ambient light intensity , and in the adjustable range Set several intervals evenly within the environment; obtain the ambient light intensity data at the current environmental monitoring time point , determine the ambient light intensity data obtained at the current environmental monitoring time point Whether the ambient light intensity data obtained at the previous environmental monitoring time point is in a different range, this step is to determine whether the ambient light mapping value needs to be updated to avoid a brightness adjustment every time the ambient light intensity data is obtained, which increases the complexity and amount of calculation; if the ambient light intensity data obtained at the current environmental monitoring time point is If the ambient light intensity data obtained at the previous environmental monitoring time point is in a different range, the formula is used Calculate and obtain the ambient light mapping value ; If not, no action is taken.

[0020] The specific operation of using a dynamic calculation method for the display brightness of the dynamic area to obtain the target display brightness of the dynamic area includes: Apply the most recently calculated ambient light map value , this value is a value in the interval [0, 1], reflecting the position of the current ambient light intensity relative to the adjustable range. Calculate and obtain the display brightness of dynamic area targets ,in is the first correction coefficient, Between (1, 2), Used to control the dynamic area target display brightness In the environment light mapping value Increases while increasing, dynamic area target display brightness The growth rate is gradually increasing, here considering the dynamic area target display brightness and ambient light mapping values It is not a simple linear relationship. In low ambient light conditions, a small change in display brightness will significantly affect the visual effect, while in strong ambient light conditions, the display brightness needs to be greatly increased to maintain readability. If the brightness adjustment is in a simple linear relationship with the ambient light intensity, then the change in screen brightness will be in a fixed proportion to the change in ambient light intensity. This simple relationship may not accurately reflect the human eye's perception of brightness changes, and may not be able to adapt to all viewing environments. By introducing the first correction coefficient , which can turn brightness adjustment into a nonlinear process; this coefficient allows the brightness growth rate to be adjusted when the ambient light intensity changes, making the brightness change more in line with the perception characteristics of the human eye.

[0021] The specific operation of calculating and obtaining the perceived brightness value based on the RGB value of the pixel in the static area, and calculating the brightness adjustment range of the pixel using the obtained perceived brightness value includes: For any pixel in the static area, read the values ​​of the red, green, and blue channels of the pixel, which are recorded as , , ; Using the formula Calculate the perceived brightness value of the pixel ; By calculating the perceived brightness based on the RGB values, the human eye's perception of the brightness of different colors can be more accurately reflected, thereby achieving brightness adjustment that is more in line with the visual characteristics of the human eye; by calculating the brightness adjustment range of each pixel, the brightness of pixels with lower perceived brightness can be reduced to reduce energy consumption while maintaining sufficient visual clarity; Based on the perceived brightness value of the pixel , using the formula Calculate the upper limit of the brightness adjustment range of the obtained pixel , where x represents the lower limit of the range, Between (0, 1), when the perceived brightness value of the pixel When it is 0, the upper limit of the brightness adjustment range of the pixel That is , The value of is obtained through the swarm optimization algorithm; is the second correction coefficient, Between (0, 1), Used to control the upper limit of the brightness adjustment range As the perceived brightness value P increases, the upper limit of the brightness adjustment range The growth rate gradually slows down; here, it is also considered that the relationship between the upper limit of the brightness adjustment range and the perceived brightness value is not a simple linear relationship. If the brightness adjustment and the perceived brightness value are in a simple linear relationship, then the brightness changes of all colors will be carried out at the same rate, which may not accurately reflect the differences in human eye's perception of different brightness levels; by introducing the second correction coefficient , a nonlinear brightness adjustment model can be created to better adapt to the nonlinear perception characteristics of the human eye to brightness.

[0022] The specific operations of using the static calculation method for the display brightness of the static area include: For any pixel in the static area, apply the most recently calculated ambient light map value , and based on the upper limit of the brightness adjustment range of the pixel , using the formula Calculate the target display brightness of the acquired pixel ,in Used to control the display brightness of the pixel target In the environment light mapping value When the target is increased, the brightness The growth rate is gradually accelerating.

[0023] Specific operations for calculating smooth display brightness: For any pixel in the boundary part, the target display brightness of the pixel is calculated based on the target display brightness of the pixel. , using the formula Calculate the smooth display brightness of the pixel ,in, is the smoothing coefficient, Between (0, 1), The size of depends on the distance between the pixel and the dynamic area. The smaller the distance between the pixel and the dynamic area, The closer the value is to 1; the calculation of smooth display brightness helps to create a visually smooth transition between dynamic and static areas, avoiding unnatural viewing caused by sudden changes in brightness; this method allows the LED special-shaped screen to intelligently adjust the brightness according to the dynamic characteristics and position of the content to adapt to different display needs.

[0024] calculate The population optimization algorithm used for the value of is a genetic algorithm, which is a search algorithm that simulates the principles of natural selection and genetics and is used to solve optimization problems. It iteratively improves candidate solutions by simulating mechanisms such as inheritance, mutation, crossover, and selection in the biological evolution process. In a genetic algorithm, each candidate solution is regarded as an individual, and the fitness of the individual is evaluated by a fitness function, which measures the individual's ability to solve problems. The algorithm starts with a set of randomly generated initial populations, retains individuals with higher fitness through a selection process, and then generates a new offspring population through crossover and mutation operations. This process is repeated until the stopping condition is met, such as reaching the maximum number of iterations or the quality of the solution meets the preset standard. Genetic algorithms have been widely used in function optimization, pattern recognition, machine learning and other fields due to their strong global search capabilities, fewer parameter settings, and easy implementation. Specific operations: A1: Set the population size and randomly generate n candidates in the range of (0, 1) value, n candidates will be randomly generated The values ​​form the initial population and set the maximum number of iterations; A2: For any candidate Value, using the formula Calculate the fitness of the candidate x value ,in, Indicates that the candidate is applied The visual deviation value caused by adjusting the brightness of the LED special-shaped screen. and Candidates The reciprocal of the value and the visual deviation value The weight coefficient of the reciprocal of , which means that the optimization goal of the candidate x value is to minimize The value and the minimum visual deviation value; the higher the fitness calculated, the better the candidate The better the value is, A3: Apply the roulette wheel selection method to select the corresponding number of candidates with the best fitness performance at a preset selection ratio value, the selected candidate The value composition selects the set of individuals; A4: Apply the preset crossover probability to select candidates from the individual set The values ​​are cross-operated to generate the corresponding number of new candidates Value, the new candidate to be obtained The values ​​form a crossover set; candidates are randomly selected from the crossover set value, and the candidate The value is slightly adjusted, and the adjusted crossover individual set is the variant individual set; A5: Merge the selected individual set and the variant individual set to obtain the merged individual set, and calculate all the candidate The fitness of the value, the n candidates with the best fitness performance Value as the new generation population; A6: Repeat steps A3 to A5 to iteratively update the population until the maximum number of iterations is reached. The population with the best fitness in the last generation is the optimal one. value.

[0025] An energy-saving control device for an LED special-shaped screen, wherein the device is applied to any of the above-mentioned energy-saving control methods for an LED special-shaped screen.

[0026] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the appended claims of the present invention. Parts not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. The energy-saving control method of LED special-shaped screen is characterized in that: include: Based on the display content of the LED special-shaped screen, the LED special-shaped screen is divided into a dynamic area and a static area, and the part of the static area close to the boundary of the dynamic area is marked as the boundary part; According to the adjustable display brightness range of the LED special-shaped screen, the display brightness of the LED special-shaped screen is mapped to [0, 1], where 0 and 1 correspond to the lowest value and the highest value of the adjustable display brightness range of the LED special-shaped screen, respectively; Acquire ambient light intensity data at the current environmental monitoring time point, and calculate and acquire an ambient light mapping value based on the acquired ambient light intensity data; For the dynamic area, the currently acquired ambient light mapping value is applied to the display brightness of the dynamic area using a dynamic calculation method to obtain the target display brightness of the dynamic area; For any pixel in the static area, read the RGB value of the pixel, calculate the perceived brightness value of the pixel based on the RGB value, and use the acquired perceived brightness value to calculate the brightness adjustment range of the pixel; apply the currently acquired ambient light mapping value to the brightness adjustment range of the pixel using a static calculation method to obtain the target display brightness of the pixel; For any pixel in the boundary part of the static area, based on the target display brightness currently obtained for the pixel and the target display brightness of the dynamic area, a smooth display brightness of the pixel is calculated and obtained; The target display brightness of the dynamic area, the target display brightness of all pixels in the static area, and the smooth display brightness are obtained by the application to adjust the brightness of the LED special-shaped screen.

2. The energy-saving control method of LED special-shaped screen according to claim 1 is characterized in that: The specific operation of obtaining the ambient light mapping value based on the obtained ambient light intensity calculation is as follows: Set the adjustable range of ambient light intensity , and in the adjustable range Set several intervals evenly within the environment; obtain the ambient light intensity data at the current environmental monitoring time point , determine the ambient light intensity data obtained at the current environmental monitoring time point Is the ambient light intensity data obtained at the previous environmental monitoring time point in a different range? If so, use the formula Calculate and obtain the ambient light mapping value ; If not, no action is taken.

3. The energy-saving control method of LED special-shaped screen according to claim 2 is characterized in that: The specific operation of using a dynamic calculation method for the display brightness of the dynamic area to obtain the target display brightness of the dynamic area includes: Apply the most recently calculated ambient light map value , using the formula Calculate and obtain the display brightness of dynamic area targets , where The first correction factor, Between (1, 2), Used to control the dynamic area target display brightness In the environment light mapping value Increases while increasing, dynamic area target display brightness The growth rate is gradually accelerating.

4. The energy-saving control method of LED special-shaped screen according to claim 3 is characterized in that: The specific operation of calculating and obtaining the perceived brightness value based on the RGB value of the pixel in the static area, and calculating the brightness adjustment range of the pixel using the obtained perceived brightness value includes: For any pixel in the static area, read the values ​​of the red, green, and blue channels of the pixel, which are recorded as , , ; Using the formula Calculate the perceived brightness value of the pixel ; Based on the perceived brightness value of the pixel , using the formula Calculate the upper limit of the brightness adjustment range of the pixel ,in Indicates the lower limit of the range, Between (0, 1), when the perceived brightness value of the pixel When it is 0, the upper limit of the brightness adjustment range of the pixel That is , The value of is obtained through the swarm optimization algorithm; is the second correction coefficient, Between (0, 1), Used to control the upper limit of the brightness adjustment range With perceived brightness value The upper limit of the brightness adjustment range increases with the increase of The growth rate gradually slowed down.

5. The energy-saving control method of LED special-shaped screen according to claim 4 is characterized in that: The specific operation of using the static calculation method for the display brightness of the static area includes: for any pixel in the static area, applying the most recently calculated ambient light mapping value , and based on the upper limit of the brightness adjustment range of the pixel , using the formula Calculate the target display brightness of the acquired pixel ,in Used to control the display brightness of the pixel target In the environment light mapping value When the target is increased, the brightness The growth rate is gradually accelerating.

6. The energy-saving control method of LED special-shaped screen according to claim 5 is characterized in that: Specific operations for calculating smooth display brightness: For any pixel in the boundary part, the target display brightness of the pixel is calculated based on the target display brightness of the pixel. , using the formula Calculate the smooth display brightness of the pixel ,in, is the smoothing coefficient, Between (0, 1), The size of depends on the distance between the pixel and the dynamic area. The smaller the distance between the pixel and the dynamic area, The closer the value is to 1.

7. The energy-saving control method of LED special-shaped screen according to claim 6, characterized in that: calculate The population optimization algorithm used for the value of is a genetic algorithm, and the specific operations are: A1: Set the population size and randomly generate n candidates in the range of (0, 1) value, n candidates will be randomly generated The values ​​form the initial population and set the maximum number of iterations; A2: For any candidate Value, using the formula Calculate the candidate The fitness of the value ,in, Indicates the visual deviation value generated by applying the candidate value to adjust the brightness of the LED special-shaped screen. and Candidates The reciprocal of the value and the visual deviation value The weight coefficient of the reciprocal of The optimization goal of the value is to minimize The value and the minimum visual deviation value; the higher the fitness calculated, the better the candidate The better the value is, A3: Apply the roulette wheel selection method to select the corresponding number of candidates with the best fitness performance at a preset selection ratio value, the selected candidate The value composition selects the set of individuals; A4: Apply the preset crossover probability to select candidates from the individual set The values ​​are cross-operated to generate the corresponding number of new candidates Value, the new candidate to be obtained The values ​​form a crossover set; candidates are randomly selected from the crossover set value, and the candidate The value is slightly adjusted, and the adjusted crossover individual set is the variant individual set; A5: Merge the selected individual set and the variant individual set to obtain the merged individual set, and calculate all the candidate The fitness of the value, the n candidates with the best fitness performance Value as the new generation population; A6: Repeat steps A3 to A5 to iteratively update the population until the maximum number of iterations is reached. The population with the best fitness in the last generation is the optimal one. value.

8. The energy-saving control device of LED special-shaped screen is characterized in that: The device is applied to the energy-saving control method of the LED special-shaped screen described in any one of claims 1 to 7.

Images