Energy-saving control method, system and device of COB display screen and COB display screen

Abstract

The invention discloses an energy-saving control method, system and device for a COB display screen and the COB display screen. The method comprises the following steps: acquiring an edge brightness pixel value and an edge pixel position coordinate of a target object; determining numerical proportion information according to the edge brightness pixel value, comparing the numerical proportion information with a preset proportion threshold value, and determining a single color parameter according to a comparison result; performing gray and numeralization processing according to the edge pixel position coordinates to obtain background color information of the position; performing quantity statistics according to the background color information to obtain a background color quantity; performing comparative analysis according to the background color number and the single color parameter to obtain the proportion of the background color number; and performing control driving according to the background color number and the proportion of the background color number to realize the brightness contrast adjustment of the display screen. According to edge pixel distribution analysis of the target object, local or overall brightness is adjusted, so that the flexibility of the display screen is improved.

Description

Technical Field

[0001] The present invention relates to the field of screen display control technology, and in particular to an energy-saving control method, system, device and COB display screen of a COB display screen. Background Art

[0002] At present, COB (chip on board) technology is an emerging LED packaging technology. Different from the traditional SMD positive packaging technology, it is a flip-chip technology. An obvious benefit of flip-chip technology is that it minimizes the heat conduction distance between the chip and the heat sink, eliminates the heat accumulation and thermal resistance caused by the welding wire between the chip and the heat sink, eliminates the parasitic inductance, resistance and other problems caused by the welding wire of the chip in the PCB, and reduces the packaging volume, reduces the difficulty of PCB design, reduces the process flow, and improves the stability of the product.

[0003] However, in one prior art, a method for adjusting a display screen first converts the color space of a captured image into a YUV format with separated brightness and chromaticity; then, the entire image is divided into a plurality of blocks of the same size, and the pixel values ​​of each small block are counted to find a 16*16 block with the smallest average pixel value; then, with the block as the center, the range is expanded, the average pixel value of the range content block is calculated, and the range is gradually expanded until the average pixel value no longer changes or reaches a set threshold, and the range value set at this time is calculated; then, the brightness adjustment factor is calculated according to the brightness adjustment factor formula; finally, the brightness value output by the terminal is adjusted according to the calculated brightness adjustment factor.

[0004] In the prior art, the brightness value output by the terminal can only be controlled by setting a threshold, and the adjustment of the local or overall brightness cannot be achieved, resulting in a waste of energy. Summary of the invention

[0005] The present invention provides an energy-saving control method, system, device and COB display screen of a COB display screen, so as to analyze the pixel distribution at the edge of a target object and adjust the local or overall brightness, thereby reducing energy waste and improving the flexibility and energy-saving effect of the display screen.

[0006] In a first aspect, in order to solve the above technical problems, the present invention provides an energy-saving control method for a COB display screen, comprising: Obtain edge brightness pixel values ​​and edge pixel position coordinates of the target object; Determining numerical ratio information according to the edge brightness pixel value, and comparing the numerical ratio information with a preset ratio threshold, and determining a single color parameter according to the comparison result; Perform grayscale and numerical processing according to the edge pixel position coordinates to obtain background color information of the position; Perform quantity counting according to the background color information to obtain the number of background colors; Comparative analysis is performed based on the number of background colors and the single color parameter to obtain the proportion of the number of background colors; According to the number of background colors and the proportion of the number of background colors, control driving is performed to achieve display screen brightness and contrast adjustment.

[0007] As an optional implementation manner, the obtaining of edge brightness pixel values ​​and edge pixel position coordinates of the target object includes: According to the change of voltage information inside the sensor, the brightness numerical information is obtained; Performing preliminary calculations based on the brightness digitization information to obtain edge brightness pixel values; Position recognition is performed based on the brightness digitization information to obtain edge pixel position coordinates.

[0008] As an optional implementation manner, performing preliminary calculation according to the brightness digitization information to obtain edge brightness pixel values ​​includes: According to the brightness numerical information, combined with the current ambient light intensity, the screen brightness information is obtained; Obtain edge brightness pixel values ​​based on the screen brightness information and in combination with human eye brightness sensing conditions; The edge brightness pixel value is obtained based on the screen brightness information and combined with the brightness sensing of the human eye, and is calculated by the following formula: In the formula, is the edge brightness pixel value, It is the visual brightness of the current line of sight of the human eye and the light source, calculated through the intensity distribution of visible light, and has nothing to do with the chromaticity of the target color. is the background brightness in front of the head, is the ambient background brightness, , and They represent the percentage of brightness between human eyes and background, the percentage of brightness between human eyes and screen, and the percentage of brightness between ambient background and screen; Among them, the background brightness of the front area and ambient background brightness , calculated by the following formula: In the formula, is the chromaticity coordinate calculated from the three stimulus values ​​of the color spectrum to be calculated, and It is a function that calculates brightness based on chromaticity coordinates.

[0009] As an optional implementation manner, determining the numerical ratio information according to the edge brightness pixel value includes: According to the edge brightness pixel values, numerical sorting is performed to obtain brightness sequence numerical information; Calculate the value ratio according to the brightness sequence value information to obtain the value ratio information; The step of calculating the numerical ratio according to the brightness sequence numerical information to obtain the numerical ratio information includes: According to the brightness sequence numerical information, the area is divided into five major areas according to the numerical average, and the proportion of the five major areas to the total area is calculated respectively to obtain numerical proportion information.

[0010] As an optional implementation manner, performing grayscale and numerical processing according to the edge pixel position coordinates to obtain background color information of the position includes: According to the edge pixel position coordinates, grayscale processing is performed at the coordinate position to obtain grayscale information; Performing numerical calculation based on the grayscale information to obtain background color information of the position; The grayscale processing at the coordinate position is performed according to the edge pixel position coordinates to obtain grayscale information, including: In the formula, represents the intensity of the red channel, Represent the intensity of the green channel, represents the intensity of the blue channel, Represents the grayscale information of the reflection image.

[0011] As an optional implementation manner, performing quantity counting according to the background color information to obtain the number of background colors includes: Performing quantity statistics according to the background color information to obtain color quantity information; According to the color quantity information, combined with the required color information, the required color information quantity is obtained; According to the required amount of color information, the number of background colors is obtained.

[0012] The color quantity information is grayscale value information of the background color, and records the quantity of the same grayscale value information.

[0013] It should be further noted that the comparison between the number of divided areas and the number of background colors to obtain the proportion of the number of background colors includes: The number of divided areas is divided by the number of background colors to obtain the proportion of the number of background colors.

[0014] As an optional implementation manner, the comparative analysis based on the number of background colors and the single color parameter to obtain the proportion of the number of background colors includes: According to the number of background colors, numerical division is performed to obtain the number of divided areas; According to the number of the divided areas, combined with the single color parameter, the number of single color pixels is obtained; According to the number of divided areas and the number of single color pixels, the ratio of the number of background colors is obtained by comparing them with the number of background colors; The comparison between the number of divided areas and the number of single color pixels and the number of background colors to obtain the proportion of the number of background colors includes: The number of divided areas and the number of single-color pixels are divided by the number of background colors to obtain the proportion of the number of background colors.

[0015] As an optional implementation, the control driving is performed according to the number of background colors and the ratio of the number of background colors to achieve display screen brightness contrast adjustment, including: When the number of background colors is lower than a first preset number value and the proportion of the number of background colors is lower than 50%, adjusting the operation mode of the control chip to the first control mode; When the number of background colors is lower than a first preset number value and the proportion of the number of background colors is higher than 50%, adjusting the operation mode of the control chip to the second control mode; When the number of background colors is higher than a first preset number value and the proportion of the number of background colors is lower than 50%, adjusting the operation mode of the control chip to the third control mode; When the number of background colors is higher than a first preset number value and the proportion of the number of background colors is higher than 50%, the operation mode of the control chip is adjusted to the fourth control mode.

[0016] In a second aspect, the present invention provides an energy-saving control system for a COB display screen, characterized in that it includes: A data acquisition module is used to obtain edge brightness pixel values ​​and edge pixel position coordinates of a target object; A color parameter calculation module, used for obtaining a single color parameter according to the edge brightness pixel value; A background color acquisition module, used to obtain background color information of a position according to the edge pixel position coordinates; A color quantity calculation module, used for obtaining the background color quantity according to the background color information; A ratio calculation module, used for obtaining the ratio of the number of background colors according to the number of background colors; The brightness adjustment module is used to control and drive according to the number of background colors and the proportion of the number of background colors to achieve brightness and contrast adjustment of the display screen.

[0017] In a third aspect, the present invention further provides an electronic device, comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, the energy-saving control method for the COB display screen described in any one of the above is implemented.

[0018] In a fourth aspect, the present invention further provides a COB display screen, comprising an energy-saving control system for the COB display screen as described in any one of the above.

[0019] In a fifth aspect, the present invention further provides a computer-readable storage medium, which includes a stored computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute any one of the above-mentioned energy-saving control methods for the COB display screen.

[0020] Compared with the prior art, the present invention has the following beneficial effects: the present invention provides an energy-saving control method, system, device and COB display screen of a COB display screen, the method being executed by a controller, including: obtaining edge brightness pixel values ​​and edge pixel position coordinates of a target object; obtaining a single color parameter according to the edge brightness pixel value; obtaining background color information of the position according to the edge pixel position coordinates; obtaining the number of background colors according to the background color information; obtaining the proportion of the number of background colors according to the number of background colors combined with a single color parameter; and controlling and driving according to the number of background colors and the proportion of the number of background colors to achieve display screen brightness contrast adjustment.

[0021] The present invention identifies the edge of a target object through image processing technology, obtains its brightness pixel value and position coordinates; determines the dominant color parameters of the object by analyzing these edge brightness pixel values; then, uses the edge pixel position coordinates to identify the color information of the surrounding background, and counts the number of different background colors and their proportions in the image; finally, according to the diversity and distribution ratio of the background colors, derives the corresponding brightness and contrast adjustment strategy to achieve edge pixel distribution analysis of the target object and adjust the local or overall brightness, thereby reducing energy waste and improving the flexibility and energy-saving effect of the display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic flow chart of an energy-saving control method for a COB display screen provided by the first embodiment of the present invention; Figure 2 It is a schematic diagram of the structure of an energy-saving control system of a COB display screen provided by the second embodiment of the present invention. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not 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.

[0024] At present, COB (chip on board) technology is an emerging LED packaging technology. Different from the traditional SMD positive packaging technology, it is a flip-chip technology. An obvious benefit of flip-chip technology is that it minimizes the heat conduction distance between the chip and the heat sink, eliminates the heat accumulation and thermal resistance caused by the welding wire between the chip and the heat sink, eliminates the parasitic inductance, resistance and other problems caused by the welding wire of the chip in the PCB, and reduces the package volume, reduces the difficulty of PCB design, reduces the process flow, and improves the stability of the product, all of which can reduce costs for LED display manufacturers.

[0025] However, in one prior art, a method for adjusting a display screen first converts the color space of a captured image into a YUV format with separated brightness and chromaticity; then, the entire image is divided into a plurality of blocks of the same size, and the pixel values ​​of each small block are counted to find a 16*16 block with the smallest average pixel value; then, with the block as the center, the range is expanded, the average pixel value of the range content block is calculated, and the range is gradually expanded until the average pixel value no longer changes or reaches a set threshold, and the range value set at this time is calculated; then, the brightness adjustment factor is calculated according to the brightness adjustment factor formula; finally, the brightness value output by the terminal is adjusted according to the calculated brightness adjustment factor.

[0026] In the prior art, the brightness and contrast of many COB display large screens used cannot be adjusted. When different brightnesses are required to display content, different display screens or display devices need to be used. It is impossible to use one screen for adjustment, and the brightness and contrast are always constant, resulting in energy waste.

[0027] In order to solve the above problems, a plastic particle detection method based on machine vision provided in an embodiment of the present application will be introduced and explained in detail through the following specific embodiments.

[0028] Reference Figure 1 The first embodiment of the present invention provides a method for controlling energy saving of a COB display screen, comprising the following steps: S11, obtaining edge brightness pixel values ​​and edge pixel position coordinates of the target object; S12, determining numerical ratio information according to the edge brightness pixel value, and comparing the numerical ratio information with a preset ratio threshold, and determining a single color parameter according to the comparison result; S13, performing grayscale and numerical processing according to the edge pixel position coordinates to obtain background color information of the position; S14, performing quantity counting according to the background color information to obtain the number of background colors; S15, performing comparative analysis based on the number of background colors and the single color parameter to obtain a proportion of the number of background colors; S16, controlling and driving according to the number of background colors and the ratio of the number of background colors to achieve brightness and contrast adjustment of the display screen.

[0029] It should be noted that the edge brightness pixel value and edge pixel position coordinates of the target object are acquired by a visual sensor, wherein the machine vision module is a key component in modern industrial automation and intelligent manufacturing. It captures and analyzes images through high-precision visual sensors to provide the necessary visual information for the automation system. This module usually includes different types of cameras, such as CCD (charge-coupled device) cameras, CMOS (complementary metal oxide semiconductor) cameras, and line array cameras, each of which has unique advantages and application scenarios. CCD cameras are known for their high resolution, high sensitivity, and excellent image quality, and are particularly suitable for applications that require high-quality image capture. CMOS cameras are favored for their fast imaging capabilities, low power consumption, and cost-effectiveness, and are widely used in situations that require fast response. Line array cameras are used for continuous object detection and measurement tasks with their expertise in high-speed scanning and precise measurement.

[0030] Exemplarily, the machine vision module in this embodiment uses a CMOS camera. The image data of the COB screen collected by the CMOS camera, and the generated digital image data contains detailed visual information of the COB display screen, which can be used for further image processing, analysis and decision making.

[0031] In an embodiment of the present invention, by obtaining the edge brightness pixel value and edge pixel position coordinates of the target object; obtaining a single color parameter according to the edge brightness pixel value; obtaining the background color information of the position according to the edge pixel position coordinates; obtaining the number of background colors according to the background color information; obtaining the proportion of the number of background colors according to the number of background colors; and controlling and driving according to the number of background colors and the proportion of the number of background colors, brightness and contrast adjustment of the display screen is realized. The present invention identifies the edge of the target object through image processing technology, obtains its brightness pixel value and position coordinates; determines the dominant color parameters of the object by analyzing these edge brightness pixel values; then, uses the edge pixel position coordinates to identify the color information of the surrounding background, and counts the number of different background colors and their proportions in the image; finally, according to the diversity and distribution ratio of the background colors, derives the corresponding brightness and contrast adjustment strategy to realize the analysis of the distribution of edge pixels of the target object and the adjustment of local or overall brightness, thereby reducing energy waste and improving the flexibility and energy saving effect of the display screen.

[0032] In order to facilitate the understanding of the present invention, some preferred embodiments of the present invention are further described below.

[0033] In step S11, the step of obtaining edge brightness pixel values ​​and edge pixel position coordinates of the target object includes: According to the change of voltage information inside the sensor, the brightness numerical information is obtained; Performing preliminary calculations based on the brightness digitization information to obtain edge brightness pixel values; Position recognition is performed based on the brightness digitization information to obtain edge pixel position coordinates.

[0034] It should be noted that the brightness digitization information is obtained according to the change of voltage information inside the sensor, including changing the voltage change information inside the sensor according to the captured image, performing analog-to-digital conversion according to the voltage change information to obtain numerical information, and obtaining the brightness digitization information based on the obtained numerical information.

[0035] It should be further noted that the preliminary calculation is performed based on the brightness digitization information to obtain the edge brightness pixel value, including: According to the brightness numerical information, combined with the current ambient light intensity, the screen brightness information is obtained; Obtain edge brightness pixel values ​​based on the screen brightness information and in combination with human eye brightness sensing conditions; The edge brightness pixel value is obtained based on the screen brightness information and combined with the brightness sensing of the human eye, and is calculated by the following formula: In the formula, is the edge brightness pixel value, It is the visual brightness of the current line of sight of the human eye and the light source, calculated through the intensity distribution of visible light, and has nothing to do with the chromaticity of the target color. is the background brightness in front of the head, is the ambient background brightness, and They represent the percentage of brightness between human eyes and background, the percentage of brightness between human eyes and screen, and the percentage of brightness between ambient background and screen; Among them, the background brightness of the front area and ambient background brightness , calculated by the following formula: In the formula, is the chromaticity coordinate calculated from the three stimulus values ​​of the color spectrum to be calculated, and It is a function that calculates brightness based on chromaticity coordinates.

[0036] It should be further explained that the percentage of human eye and background brightness, the percentage of human eye and screen brightness, and the percentage of ambient background brightness and screen brightness are pre-set by the user and can be 30%, 40%, and 30%. The sum of the three percentages must be 100%, which is reasonable and is not specifically limited here.

[0037] It should be further explained that and It is a function that calculates brightness based on chromaticity coordinates, which is determined based on the background information of the head area and the background information of the environment, and is calculated by the following formula: In the formula, is the brightness information of the required pixel, is the proportional constant, take 0.023, , and For what you want The red, green, and blue channel values ​​in the coordinate system, where the coordinates Taking the lower left corner of the COB display facing the observer as the origin, the left is the positive direction of the x-axis, the upward is the positive direction of the y-axis, and the direction pointing to the display is the positive direction of the z-axis.

[0038] In step S12, determining the numerical ratio information according to the edge brightness pixel value includes: According to the edge brightness pixel values, numerical sorting is performed to obtain brightness sequence numerical information; Calculate the value ratio according to the brightness sequence value information to obtain the value ratio information; The step of calculating the numerical ratio according to the brightness sequence numerical information to obtain the numerical ratio information includes: According to the brightness sequence numerical information, the area is divided into five major areas according to the numerical average, and the proportion of the five major areas to the total area is calculated respectively to obtain numerical proportion information.

[0039] It should be noted that the numerical average refers to the maximum and minimum values ​​obtained according to the brightness order values. The maximum difference is obtained by subtracting the minimum value from the maximum value. The maximum difference is divided by five and divided into five parts to obtain the numerical average.

[0040] It should be noted that the single pixel parameter is obtained based on the numerical ratio information. When the ratio of one of the five major parts is greater than 80%, the single pixel parameter is the pixel value of the area. If the ratio of no part is greater than 80%, the single pixel parameter is recorded as 0.

[0041] In step S13, grayscale and numerical processing is performed according to the edge pixel position coordinates to obtain background color information of the position, including: According to the edge pixel position coordinates, grayscale processing is performed at the coordinate position to obtain grayscale information; According to the grayscale information, numerical calculation is performed to obtain background color information of the position.

[0042] It should be noted that the grayscale processing at the coordinate position is performed according to the edge pixel position coordinates to obtain grayscale information, including: In the formula, represents the intensity of the red channel, Represent the intensity of the green channel, represents the intensity of the blue channel, Represents the grayscale information of the reflection image.

[0043] It should be noted that the , and The analog-to-digital conversion output result received by the computer is output.

[0044] In step S14, obtaining the number of background colors according to the background color information includes: Performing quantity statistics according to the background color information to obtain color quantity information; According to the color quantity information, combined with the required color information, the required color information quantity is obtained; According to the required amount of color information, the number of background colors is obtained.

[0045] The color quantity information is grayscale value information of the background color, and records the quantity of the same grayscale value information.

[0046] It should be noted that the number of pixels is counted according to the background color information, and the number of pixels is the color quantity information. This step involves collecting the color information of each pixel in the image. In a digital image, color is represented by the values ​​of the three color channels RGB (red, green, and blue), or in a grayscale image, color is represented by a single grayscale value. After collecting the color information of all pixels, this information is then counted to record the number of times each color or grayscale value appears to obtain the color quantity information. Exemplarily, a data structure, such as a hash table or an array, is used to store and count the number of times each color appears.

[0047] It should be noted that the color information required is expressed as a single color parameter. If the single color parameter is 0, it means that the color parameter value has not changed. At this time, the color information required is the color information with the largest proportion of grayscale values. This step involves screening and counting the number of these colors according to the set requirements (the color information required). For example, if the color information required is a single color parameter, then the number of times this single color parameter appears needs to be counted.

[0048] Finally, according to the above statistical results, the number of each color in the background, that is, the number of background colors, is determined. The number of background colors can be determined in the following ways: select the color with the most occurrences as the background color; or set a threshold and select the color with the number of occurrences exceeding the threshold as the background color; or use a clustering algorithm (such as K-means) to group the colors and then select the color with the most occurrences in each group as the background color.

[0049] Optionally, if the color information required is 0, it means that the color parameter has not changed (ie, a single color parameter). In this case, it is necessary to find the color that appears the most times, that is, the color with the largest proportion of grayscale values.

[0050] Through the above steps, the number of colors can be accurately counted to obtain accurate background color distribution information, which is very important for image analysis and processing. This process can be adjusted according to different required color information to adapt to different application scenarios, such as image segmentation, background extraction, etc., and can simultaneously realize efficient processing and analysis of large amounts of image data.

[0051] In step S15, the ratio of the number of background colors is obtained based on the number of background colors and combined with a single color parameter, including: According to the number of background colors, numerical division is performed to obtain the number of divided areas; According to the number of the divided areas, combined with the single color parameter, the number of single color pixels is obtained; According to the number of divided areas and the number of single color pixels, the ratio of the number of background colors is obtained by comparing them with the number of background colors; The comparison between the number of divided areas and the number of single color pixels and the number of background colors to obtain the proportion of the number of background colors includes: The number of divided areas and the number of single-color pixels are divided by the number of background colors to obtain the proportion of the number of background colors.

[0052] It should be noted that the number of single color pixels is obtained according to the number of divided areas in combination with a single color parameter, including: obtaining the largest number of grayscale values ​​according to the number of divided areas, and comparing them with the single color parameter to obtain the number of single color pixels.

[0053] In step S16, the control driving is performed according to the number of background colors and the ratio of the number of background colors to achieve display screen brightness contrast adjustment, including: When the number of background colors is lower than a first preset number value and the proportion of the number of background colors is lower than 50%, adjusting the operation mode of the control chip to the first control mode; When the number of background colors is lower than a first preset number value and the proportion of the number of background colors is higher than 50%, adjusting the operation mode of the control chip to the second control mode; When the number of background colors is higher than a first preset number value and the proportion of the number of background colors is lower than 50%, adjusting the operation mode of the control chip to the third control mode; When the number of background colors is higher than a first preset number value and the proportion of the number of background colors is higher than 50%, the operation mode of the control chip is adjusted to the fourth control mode.

[0054] It should be noted that the first preset quantity value is preset by the user and can be 5000, which is reasonable and is not specifically limited here. The first control mode, the second control mode, the third control mode, and the fourth control mode are set by the user and can adjust the light intensity to 25%, 50%, 75%, and 100%, which are not specifically limited here.

[0055] In order to facilitate the understanding of the present invention, some preferred embodiments of the present invention are further described below.

[0056] In this embodiment, an energy-saving control device for a COB display screen is proposed. The system consists of the following key parts: an image edge detection device, a color parameter analysis device, a background color analysis device, a color quantity statistics device, a ratio calculation and module decision device, and a display screen adjustment execution device. Among them, the image edge detection device is used to digitize the brightness information by analyzing the voltage change of the sensor, and calculate the edge brightness pixel value by combining the ambient light intensity and the brightness sensing of the human eye; the color parameter analysis device is used to extract a single color parameter in the image by sorting and calculating the ratio; the background color analysis device is used to identify the color components in the background by graying and digitizing the coordinate position; the color quantity statistics device is used to understand the diversity of colors in the background through statistics and analysis of color quantity information; the ratio calculation and module decision device is used to calculate the proportion of the background color quantity, and make control decisions based on these ratio data; the display screen adjustment execution device is used to adjust the brightness and contrast of the display screen. The specific working steps are as follows: Step 1: Capture the edge brightness and position information of the target object through the sensor, convert the optical signal into an electrical signal, and provide basic data for subsequent processing.

[0057] Step 2: Using edge brightness information, the system calculates the dominant color parameters in the image to provide a reference for adjusting the display color.

[0058] Step 3: The system processes and identifies the background color information based on the edge pixel position coordinates, laying the foundation for the quantitative analysis of the background color.

[0059] Step 4: The system counts the frequency of occurrence of different background colors and determines the diversity of colors in the background, which is crucial for subsequent color ratio calculations.

[0060] Step 5: Combining the number of background colors and single color parameters, the system calculates the proportion of various colors, providing accurate data support for the brightness and contrast adjustment of the display.

[0061] Step 6: Based on the calculated ratio and quantity information, the system intelligently adjusts the brightness and contrast of the display screen to adapt to different display requirements and achieve energy-saving effects.

[0062] In summary, the present invention provides an energy-saving control method, system, device and COB display screen of a COB display screen. The method is executed by a controller, and includes: obtaining edge brightness pixel values ​​and edge pixel position coordinates of a target object; determining numerical ratio information according to the edge brightness pixel values, and comparing the numerical ratio information with a preset ratio threshold, and determining a single color parameter according to the comparison result; performing grayscale and numerical processing according to the edge pixel position coordinates to obtain background color information of the position; performing quantity statistics according to the background color information to obtain the number of background colors; performing comparative analysis according to the number of background colors and the single color parameter to obtain the proportion of the number of background colors; controlling and driving according to the number of background colors and the proportion of the number of background colors to achieve display screen brightness contrast adjustment. The present invention identifies the edge of a target object through image processing technology, obtains its brightness pixel value and position coordinates; determines the dominant color parameters of the object by analyzing these edge brightness pixel values; then, uses the edge pixel position coordinates to identify the color information of the surrounding background, and counts the number of different background colors and their proportions in the image; finally, according to the diversity and distribution ratio of the background colors, derives the corresponding brightness and contrast adjustment strategy to achieve edge pixel distribution analysis of the target object and adjust the local or overall brightness, thereby reducing energy waste and improving the flexibility and energy-saving effect of the display screen.

[0063] Reference Figure 2 The second embodiment of the present invention provides an energy-saving control system for a COB display screen, comprising: A data acquisition module is used to obtain edge brightness pixel values ​​and edge pixel position coordinates of a target object; A color parameter calculation module, used for obtaining a single color parameter according to the edge brightness pixel value; A background color acquisition module, used to obtain background color information of a position according to the edge pixel position coordinates; A color quantity calculation module, used for obtaining the background color quantity according to the background color information; A ratio calculation module, used to obtain the ratio of the number of background colors according to the number of background colors and a single color parameter; The brightness adjustment module is used to control and drive according to the number of background colors and the proportion of the number of background colors to achieve brightness and contrast adjustment of the display screen.

[0064] In one embodiment, the data acquisition module is used to acquire edge brightness pixel values ​​and edge pixel position coordinates of the target object, including: According to the change of voltage information inside the sensor, the brightness numerical information is obtained; Performing preliminary calculations based on the brightness digitization information to obtain edge brightness pixel values; Position recognition is performed based on the brightness digitization information to obtain edge pixel position coordinates.

[0065] In one implementation, the color parameter calculation module, the step of obtaining the edge brightness pixel value and edge pixel position coordinates of the target object, includes: According to the change of voltage information inside the sensor, the brightness numerical information is obtained; Performing preliminary calculations based on the brightness digitization information to obtain edge brightness pixel values; Position recognition is performed based on the brightness digitization information to obtain edge pixel position coordinates.

[0066] The method for obtaining a single color parameter according to the edge brightness pixel value includes: According to the brightness numerical information, combined with the current ambient light intensity, the screen brightness information is obtained; Obtain edge brightness pixel values ​​based on the screen brightness information and in combination with human eye brightness sensing conditions; The edge brightness pixel value is obtained based on the screen brightness information and combined with the brightness sensing of the human eye, and is calculated by the following formula: In the formula, is the edge brightness pixel value, It is the visual brightness of the current line of sight of the human eye and the light source, calculated through the intensity distribution of visible light, and has nothing to do with the chromaticity of the target color. is the background brightness in front of the head, is the ambient background brightness, and They represent the percentage of brightness between human eyes and background, the percentage of brightness between human eyes and screen, and the percentage of brightness between ambient background and screen; Among them, the background brightness of the front area and ambient background brightness , calculated by the following formula: In the formula, is the chromaticity coordinate calculated from the three stimulus values ​​of the color spectrum to be calculated, and It is a function that calculates brightness based on chromaticity coordinates.

[0067] In one implementation, the background color acquisition module is used to obtain the background color information of the position according to the edge pixel position coordinates, including: According to the edge pixel position coordinates, grayscale processing is performed at the coordinate position to obtain grayscale information; Performing numerical calculation based on the grayscale information to obtain background color information of the position; The grayscale processing at the coordinate position is performed according to the edge pixel position coordinates to obtain grayscale information, including: In the formula, represents the intensity of the red channel, Represent the intensity of the green channel, represents the intensity of the blue channel, Represents the grayscale information of the reflection image.

[0068] In one implementation, the color quantity calculation module is used to obtain the number of background colors according to the background color information, including: Performing quantity statistics according to the background color information to obtain color quantity information; According to the color quantity information, combined with the required color information, the required color information quantity is obtained; According to the required color information quantity, the number of background colors is obtained; The color quantity information is grayscale value information of the background color, and records the quantity of the same grayscale value information.

[0069] In one implementation, the ratio calculation module is used to obtain the ratio of the number of background colors according to the number of background colors and a single color parameter, including: According to the number of background colors, numerical division is performed to obtain the number of divided areas; According to the number of the divided areas, combined with the single color parameter, the number of single color pixels is obtained; According to the number of divided areas and the number of single color pixels, the ratio of the number of background colors is obtained by comparing them with the number of background colors; The comparison between the number of divided areas and the number of single color pixels and the number of background colors to obtain the proportion of the number of background colors includes: The number of divided areas and the number of single-color pixels are divided by the number of background colors to obtain the proportion of the number of background colors.

[0070] In one embodiment, the brightness adjustment module is used to control and drive according to the number of background colors and the ratio of the number of background colors to achieve display screen brightness contrast adjustment, including: When the number of background colors is lower than a first preset number value and the proportion of the number of background colors is lower than 50%, adjusting the operation mode of the control chip to the first control mode; When the number of background colors is lower than a first preset number value and the proportion of the number of background colors is higher than 50%, adjusting the operation mode of the control chip to the second control mode; When the number of background colors is higher than a first preset number value and the proportion of the number of background colors is lower than 50%, adjusting the operation mode of the control chip to the third control mode; When the number of background colors is higher than a first preset number value and the proportion of the number of background colors is higher than 50%, the operation mode of the control chip is adjusted to the fourth control mode.

[0071] In an embodiment of the present invention, by obtaining the edge brightness pixel value and edge pixel position coordinates of the target object; obtaining a single color parameter according to the edge brightness pixel value; obtaining the background color information of the position according to the edge pixel position coordinates; obtaining the number of background colors according to the background color information; obtaining the proportion of the number of background colors according to the number of background colors; and controlling and driving according to the number of background colors and the proportion of the number of background colors, brightness and contrast adjustment of the display screen is realized. The present invention identifies the edge of the target object through image processing technology, obtains its brightness pixel value and position coordinates; determines the dominant color parameters of the object by analyzing these edge brightness pixel values; then, uses the edge pixel position coordinates to identify the color information of the surrounding background, and counts the number of different background colors and their proportions in the image; finally, according to the diversity and distribution ratio of the background colors, derives the corresponding brightness and contrast adjustment strategy to realize the analysis of the distribution of edge pixels of the target object and the adjustment of local or overall brightness, thereby reducing energy waste and improving the flexibility and energy saving effect of the display screen.

[0072] It should be noted that the energy-saving control system of a COB display screen provided in an embodiment of the present invention is used to execute all the process steps of the energy-saving control method of a COB display screen in the above embodiment. The working principles and beneficial effects of the two correspond one to one, and thus will not be described in detail.

[0073] The embodiment of the present invention further provides an electronic device. The electronic device includes: a processor, a memory, and a computer program stored in the memory and executable on the processor, such as a numerical calculation program. When the processor executes the computer program, the steps of the energy-saving control method of each COB display screen described above are implemented, such as Figure 1 Alternatively, when the processor executes the computer program, the functions of the modules / units in the above-mentioned device embodiments are realized, such as the data acquisition module.

[0074] Exemplarily, the computer program may be divided into one or more modules / units, which are stored in the memory and executed by the processor to implement the present invention. The one or more modules / units may be a series of computer program instruction segments capable of implementing specific functions, which are used to describe the execution process of the computer program in the electronic device.

[0075] The electronic device may be a computing device such as a desktop computer, a notebook, a PDA, and a smart tablet. The electronic device may include, but is not limited to, a processor and a memory. Those skilled in the art will appreciate that the above components are merely examples of electronic devices and do not constitute a limitation on the electronic device. The electronic device may include more or fewer components than the above components, or a combination of certain components, or different components. For example, the electronic device may also include input and output devices, network access devices, buses, etc.

[0076] The processor may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc. The processor is the control center of the electronic device, and uses various interfaces and lines to connect various parts of the entire electronic device.

[0077] The memory can be used to store the computer program and / or module, and the processor realizes various functions of the electronic device by running or executing the computer program and / or module stored in the memory, and calling the data stored in the memory. The memory can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created according to the use of the mobile phone (such as audio data, a phone book, etc.), etc. In addition, the memory can include a high-speed random access memory, and can also include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0078] Wherein, if the module / unit integrated in the electronic device is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Wherein, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium. It should be noted that the content contained in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electric carrier signals and telecommunication signals.

[0079] It should be noted that the device embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. In addition, in the accompanying drawings of the device embodiments provided by the present invention, the connection relationship between the modules indicates that there is a communication connection between them, which may be specifically implemented as one or more communication buses or signal lines. A person of ordinary skill in the art may understand and implement it without paying any creative effort.

[0080] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. It is particularly pointed out that for those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for energy saving control of a COB display screen, characterized in that: include: Obtain edge brightness pixel values ​​and edge pixel position coordinates of the target object; Determining numerical ratio information according to the edge brightness pixel value, and comparing the numerical ratio information with a preset ratio threshold, and determining a single color parameter according to the comparison result; Perform grayscale and numerical processing according to the edge pixel position coordinates to obtain background color information of the position; Perform quantity counting according to the background color information to obtain the number of background colors; Comparative analysis is performed based on the number of background colors and the single color parameter to obtain the proportion of the number of background colors; According to the number of background colors and the proportion of the number of background colors, control driving is performed to achieve display screen brightness and contrast adjustment.

2. The energy-saving control method of the COB display screen according to claim 1, characterized in that: The step of obtaining the edge brightness pixel value and edge pixel position coordinates of the target object includes: According to the change of voltage information inside the sensor, the brightness numerical information is obtained; Performing preliminary calculations based on the brightness digitization information to obtain edge brightness pixel values; Position recognition is performed based on the brightness digitization information to obtain edge pixel position coordinates.

3. The energy-saving control method of the COB display screen according to claim 2, characterized in that: The step of performing preliminary calculation according to the brightness digitization information to obtain edge brightness pixel values ​​includes: According to the brightness numerical information, combined with the current ambient light intensity, the screen brightness information is obtained; Obtain edge brightness pixel values ​​based on the screen brightness information and in combination with human eye brightness sensing conditions; The edge brightness pixel value is obtained based on the screen brightness information and combined with the brightness sensing of the human eye, and is calculated by the following formula: In the formula, is the edge brightness pixel value, It is the visual brightness of the current sight line of the human eye and the light source, calculated by the intensity distribution of visible light; is the background brightness in front of the head, is the ambient background brightness, and They represent the percentage of brightness between human eyes and background, the percentage of brightness between human eyes and screen, and the percentage of brightness between ambient background and screen; Among them, the background brightness of the front area and ambient background brightness , calculated by the following formula: In the formula, is the chromaticity coordinate calculated from the three stimulus values ​​of the color spectrum to be calculated, and It is a function that calculates brightness based on chromaticity coordinates.

4. The energy-saving control method of the COB display screen according to claim 1, characterized in that: The determining of the numerical ratio information according to the edge brightness pixel value comprises: According to the edge brightness pixel values, numerical sorting is performed to obtain brightness sequence numerical information; Calculate the value ratio according to the brightness sequence value information to obtain the value ratio information; The step of calculating the numerical ratio according to the brightness sequence numerical information to obtain the numerical ratio information includes: According to the brightness sequence numerical information, the area is divided into five major areas according to the numerical average, and the proportion of the five major areas to the total area is calculated respectively to obtain numerical proportion information.

5. The energy-saving control method of the COB display screen according to claim 1, characterized in that: The grayscale and numerical processing is performed according to the edge pixel position coordinates to obtain the background color information of the position, including: According to the edge pixel position coordinates, grayscale processing is performed at the coordinate position to obtain grayscale information; According to the grayscale information, numerical calculation is performed to obtain background color information of the position.

6. The energy-saving control method of the COB display screen according to claim 1, characterized in that: The step of performing quantity counting according to the background color information to obtain the number of background colors includes: Performing quantity statistics according to the background color information to obtain color quantity information; According to the color quantity information, combined with the required color information, the required color information quantity is obtained; According to the required color information quantity, the number of background colors is obtained; The color quantity information is grayscale value information of the background color, and records the quantity of the same grayscale value information.

7. The energy-saving control method of the COB display screen according to claim 1, characterized in that: The comparative analysis based on the number of background colors and the single color parameter to obtain the proportion of the number of background colors includes: According to the number of background colors, numerical division is performed to obtain the number of divided areas; According to the number of the divided areas, combined with the single color parameter, the number of single color pixels is obtained; According to the number of divided areas and the number of single color pixels, the ratio of the number of background colors is obtained by comparing them with the number of background colors; The comparison between the number of divided areas and the number of single color pixels and the number of background colors to obtain the proportion of the number of background colors includes: The number of divided areas and the number of single-color pixels are divided by the number of background colors to obtain the proportion of the number of background colors.

8. The energy-saving control method of the COB display screen according to claim 1, characterized in that: The control driving is performed according to the number of background colors and the ratio of the number of background colors to achieve the brightness and contrast adjustment of the display screen, including: When the number of background colors is lower than a first preset number value and the proportion of the number of background colors is lower than 50%, adjusting the operation mode of the control chip to the first control mode; When the number of background colors is lower than a first preset number value and the proportion of the number of background colors is higher than 50%, adjusting the operation mode of the control chip to the second control mode; When the number of background colors is higher than a first preset number value and the proportion of the number of background colors is lower than 50%, adjusting the operation mode of the control chip to the third control mode; When the number of background colors is higher than a first preset number value and the proportion of the number of background colors is higher than 50%, the operation mode of the control chip is adjusted to the fourth control mode.

9. An energy-saving control system for a COB display screen, characterized in that: include: A data acquisition module is used to obtain edge brightness pixel values ​​and edge pixel position coordinates of a target object; A color parameter calculation module, used for obtaining a single color parameter according to the edge brightness pixel value; A background color acquisition module, used to obtain background color information of a position according to the edge pixel position coordinates; A color quantity calculation module, used for obtaining the background color quantity according to the background color information; A ratio calculation module, used to obtain the ratio of the number of background colors according to the number of background colors and a single color parameter; The brightness adjustment module is used to control and drive according to the number of background colors and the proportion of the number of background colors to achieve brightness and contrast adjustment of the display screen.

10. A COB display screen, characterized in that: An energy-saving control system comprising the COB display screen as claimed in claim 9.

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