Backlight optimization method and device based on local dimming, equipment, medium and product

Abstract

This application discloses a backlight optimization method, apparatus, device, medium, and product based on local dimming, relating to the field of lighting control technology. The method includes collecting measured data from a backlight display device; wherein the measured data includes at least lamp zone layout information and a mixing coefficient template for each lamp zone in the backlight display device; the lamp zone layout information includes the identifier and coordinates of each lamp zone; based on the measured data, determining the mixing coefficient matrix for each lamp zone; based on preset constraint information, using a constrained optimization algorithm to determine a brightness optimization scheme for the backlight display device; wherein the brightness optimization scheme includes brightness adjustment information for each lamp zone; and optimizing each lamp zone of the backlight display device based on the brightness optimization scheme to obtain an optimized backlight display device. This application can improve the brightness uniformity of the backlight display device.

Description

Technical Field

[0001] This application relates to the field of lighting control technology, and in particular to a backlight optimization method, apparatus, equipment, medium and product based on local dimming. Background Technology

[0002] Local dimming technology is widely used in direct-lit LED backlighting display devices, such as LCD TVs, monitors, and automotive displays. This technology divides the backlight into multiple independently controllable lamp zones and dynamically adjusts the brightness of each lamp zone according to the displayed content, thereby improving contrast and reducing power consumption.

[0003] However, in practice, to solve the problem of uneven brightness distribution in backlight displays using Local Dimming technology, the brightness adjustment coefficients of each lamp zone are usually adjusted manually. This method is inefficient and inaccurate, resulting in poor brightness uniformity in the adjusted backlight display. Summary of the Invention

[0004] The purpose of this application is to provide a backlight optimization method, apparatus, device, medium, and product based on local dimming, which can improve the brightness uniformity of backlight display devices.

[0005] To achieve the above objectives, this application provides the following solution: In a first aspect, this application provides a backlight optimization method based on local dimming, including: Collect measured data of the backlight display device; wherein, the measured data includes at least lamp zone layout information and a mixing coefficient template for each lamp zone in the backlight display device; the lamp zone layout information includes the identifier and coordinates of each lamp zone; Based on the measured data, the mixing coefficient matrix for each light zone is determined; Based on preset constraint information, a constrained optimization algorithm is used to determine the brightness optimization scheme of the backlight display device; wherein, the brightness optimization scheme includes brightness adjustment information for each lamp zone; Based on the brightness optimization scheme, each lamp zone of the backlight display device is optimized to obtain the optimized backlight display device.

[0006] Optionally, collect measured data from the backlight display device, specifically including: Collect data from multiple pre-set light zones on the backlight display device; A Cartesian coordinate system is constructed based on the backlight display device; Determine the identifier for each light zone and the coordinates of each light zone in the Cartesian coordinate system. The layout information of the backlight display device's light zones is determined based on the identifier and coordinates of each light zone; Based on the lighting layout information, determine the mixing coefficient template for each lighting area; The lamp layout information of the backlight display device and the mixing coefficient template of each lamp area are determined as the measured data of the backlight display device.

[0007] Optionally, a mixing coefficient template for a target lighting area is determined based on the lighting area layout information, specifically including: Based on the lamp zone layout information, the multiple lamp zones of the backlight display device are determined as a target lamp zone and multiple mixed light lamp zones; Set the brightness of the plurality of mixed light areas to the standard brightness of the target light area; Determine the brightness contribution of each mixed light zone to the supplementary lighting of the target light zone; Based on the supplementary light contribution brightness corresponding to each mixing lamp area and the standard brightness, the mixing coefficient of each mixing lamp area to the target lamp area is determined; Based on the mixing coefficient corresponding to each mixing light area, a mixing coefficient template for the target light area is constructed.

[0008] Optionally, the preset constraint information includes: The brightness of the central lamp area of ​​the backlight display device is the standard brightness. The brightness of any one of the lamp zones in the backlight display device is within a preset brightness range; The brightness uniformity of the backlight display device is greater than or equal to a preset uniformity threshold.

[0009] Optionally, the preset brightness range is 0.1~5.0 or 0.5~3.0; The brightness uniformity of the backlight display device is the ratio of the minimum brightness to the maximum brightness; wherein, the minimum brightness is the brightness of the lamp area with the lowest brightness in the backlight display device, and the maximum brightness is the brightness of the lamp area with the highest brightness in the backlight display device.

[0010] Optionally, optimizing each lamp zone of the backlight display device based on the brightness optimization scheme to obtain an optimized backlight display device specifically includes: Adjust the initial brightness of each lamp zone of the backlight display device to the standard brightness; Obtain the adjustment ratio value corresponding to each lamp zone from the brightness optimization scheme; Based on the standard brightness and the adjustment ratio corresponding to each lamp zone, the optimized brightness corresponding to each lamp zone is determined. The optimized backlight display device is obtained by optimizing each lamp zone based on the optimized brightness corresponding to each lamp zone.

[0011] Secondly, this application provides a backlight optimization device based on local dimming, comprising: The acquisition unit is used to acquire measured data of the backlight display device; wherein, the measured data includes at least lamp zone layout information and a mixing coefficient template for each lamp zone in the backlight display device; the lamp zone layout information includes the identifier and coordinates of each lamp zone; The first determining unit is used to determine the mixing coefficient matrix of each light zone based on the measured data; The second determining unit is used to determine the brightness optimization scheme of the backlight display device based on preset constraint information and using a constrained optimization algorithm; wherein the brightness optimization scheme includes brightness adjustment information for each lamp zone; An optimization unit is used to optimize each lamp zone of the backlight display device based on the brightness optimization scheme to obtain an optimized backlight display device.

[0012] Thirdly, this application provides a computer device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the backlight optimization method based on local dimming as described above.

[0013] Fourthly, this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the backlight optimization method based on local dimming described above.

[0014] Fifthly, this application provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the backlight optimization method based on local dimming described above.

[0015] In a sixth aspect, this application provides a chip, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run a program or instructions, and the processor implementing the steps of the backlight optimization method based on local dimming as described above when executing the program or instructions.

[0016] According to the specific embodiments provided in this application, the following technical effects are disclosed: This application provides a backlight optimization method, apparatus, device, medium, and product based on local dimming. It constructs a mixing coefficient matrix for each lamp zone by collecting lamp zone layout information and using a measured mixing coefficient template. Combined with a constrained optimization algorithm, a brightness optimization scheme is obtained. This scheme can accurately match the actual hardware characteristics of the device, effectively improving the brightness uniformity of the backlight display device and making the brightness distribution of the screen smoother and more natural. Simultaneously, the constrained optimization algorithm ensures that the adjustment results are reasonable and reliable, avoiding abnormal brightness values. The scheme can be directly used for lamp zone brightness adjustment without complex manual adjustments, making operation simpler, more adaptable, and improving the overall display effect. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic flowchart illustrating a backlight optimization method based on local dimming, provided in an embodiment of this application; Figure 2 A schematic diagram of a light mixing coefficient template for a lighting area provided in an embodiment of this application; Figure 3 A schematic diagram of the functional modules of a backlight optimization device based on local dimming provided in an embodiment of this application; Figure 4 This is a schematic diagram of the structure of a computer device provided in an embodiment of this application. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] In one exemplary embodiment, such as Figure 1As shown, a backlight optimization method based on local dimming is provided. This method is executed by a computer device, specifically by a terminal or server alone, or by both a terminal and a server. In this embodiment, it includes the following steps 101 to 104. Wherein: Step 101: Collect measured data from the backlight display device.

[0022] In this embodiment of the application, the measured data includes at least the lamp zone layout information and the mixing coefficient template of each lamp zone in the backlight display device; the lamp zone layout information includes the identifier and coordinates of each lamp zone.

[0023] In this embodiment, the backlight display device can be any type of display device using direct-lit LED backlighting, such as home televisions, computer monitors, vehicle central control and instrument display devices, commercial advertising machines and conference all-in-one machines, medical diagnostic displays, industrial control screens, etc. This method can adapt to backlight systems with different numbers and layouts of LED zones, effectively improving the brightness uniformity and display effect of various backlight display devices.

[0024] As an optional implementation, step 101, which involves collecting measured data from the backlight display device, may include: Collect data from multiple pre-set light zones on the backlight display device; A Cartesian coordinate system is constructed based on the backlight display device; Determine the identifier for each light zone and the coordinates of each light zone in the Cartesian coordinate system. The layout information of the backlight display device's light zones is determined based on the identifier and coordinates of each light zone; Based on the lighting layout information, determine the mixing coefficient template for each lighting area; The lamp layout information of the backlight display device and the mixing coefficient template of each lamp area are determined as the measured data of the backlight display device.

[0025] This implementation method, by establishing a coordinate system to accurately determine the identification and coordinates of the light zones, can truly reflect the actual layout of the light zones. Combined with the light zone layout to obtain the light mixing coefficient template, the collected data can better match the actual hardware characteristics of the equipment, providing an accurate basis for subsequent matrix construction and optimization calculations, and effectively improving the accuracy and reliability of backlight uniformity optimization.

[0026] In this embodiment, the identifier of each light zone can identify a unique light zone, and the light zone layout information can accurately reflect the row and column distribution characteristics of irregular light zones.

[0027] As an optional implementation, the method for determining the mixing coefficient template of a target lighting area based on the lighting area layout information may include: Based on the lamp zone layout information, the multiple lamp zones of the backlight display device are determined as a target lamp zone and multiple mixed light lamp zones; Set the brightness of the plurality of mixed light areas to the standard brightness of the target light area; Determine the brightness contribution of each mixed light zone to the supplementary lighting of the target light zone; Based on the supplementary light contribution brightness corresponding to each mixing lamp area and the standard brightness, the mixing coefficient of each mixing lamp area to the target lamp area is determined; Based on the mixing coefficient corresponding to each mixing light area, a mixing coefficient template for the target light area is constructed.

[0028] This implementation method, by using a standardized brightness benchmark, accurately measures the brightness contribution of each mixing lamp area to the target lamp area and calculates the mixing coefficient. This can truly reflect the actual mixing relationship between lamp areas, making the mixing coefficient template more closely match the real optical characteristics. This provides reliable data support for subsequent matrix construction and brightness optimization, and significantly improves the accuracy and stability of backlight uniformity optimization.

[0029] In this embodiment, the light mixing coefficient template is obtained through actual measurement. The light mixing coefficient template refers to a set of correspondences between relative positions and contribution coefficients established with the target light area as a reference. The relative position represents the orientation and distance of the light mixing area relative to the target light area; the contribution coefficient is the proportion of the measured brightness contribution of the light mixing area to the target light area when emitting light at standard brightness. This template, by mapping the relative positions of each light mixing area to its corresponding light mixing coefficient, truly reflects the optical light mixing characteristics between light areas, providing standardized and reusable basic data support for the subsequent construction of the light mixing coefficient matrix.

[0030] Please refer to the following: Figure 2 , Figure 2This is a schematic diagram of a light mixing coefficient template for a lighting area according to an embodiment of this application. The template, constructed with the central lighting area as the target lighting area, is shown in the figure. The red-marked value "1" represents the light mixing coefficient of the target lighting area itself, meaning that the area contributes 100% to its own brightness under standard brightness. The remaining values ​​represent the proportion of brightness contribution from light mixing areas at different relative positions to the target lighting area. As can be seen from this light mixing coefficient template, the closer the light mixing area is to the target lighting area, the larger its light mixing coefficient, indicating a stronger contribution to supplementing the target lighting area; the farther the light mixing area is, the smaller its light mixing coefficient, indicating a weaker contribution to supplementing the lighting. The value "0" in the template indicates that there is no lighting area at that position, or that the corresponding light mixing area does not contribute effectively to the brightness of the target lighting area. The central light area mixing coefficient template is constructed based on measured data and can truly reflect the optical mixing characteristics between light areas, avoiding the deviation of traditional ideal models. The template clearly shows the contribution of light areas at different positions to the supplementary lighting of the central light area. The closer the distance, the larger the coefficient. The edge areas with no contribution are automatically set to zero, providing accurate and reliable measured basis for subsequent construction of the mixing coefficient matrix and brightness optimization, effectively improving the accuracy and stability of backlight brightness uniformity optimization.

[0031] Step 102: Based on the measured data, determine the mixing coefficient matrix for each light zone.

[0032] In this embodiment, a mapping relationship between light area coordinates and indices can be established based on the light area layout information and the light mixing coefficient template. Each light area is traversed and the corresponding light mixing coefficient is matched with its relative position. The direction of no supplementary light at the edge is automatically identified through coordinate validity verification, and the coefficient of invalid direction is assigned to 0. Finally, an N×N light mixing coefficient matrix matching the total number of light areas (N is the total number of light areas) is generated. Each element in the matrix represents the brightness contribution of any light area to the target light area.

[0033] By automatically constructing a mixing coefficient matrix based on the layout of the light zones and the measured mixing coefficients, the actual mixing relationship between the light zones can be accurately reproduced. It can accurately handle the physical characteristics of edge light zones without supplementary lighting, without the need for manual parameter adjustment. It can adapt to irregular light zone layouts, ensuring matrix accuracy and engineering applicability, and providing a stable and reliable data foundation for subsequent brightness optimization calculations.

[0034] Step 103: Based on preset constraint information, a constrained optimization algorithm is used to determine the brightness optimization scheme of the backlight display device.

[0035] In this embodiment, the brightness optimization scheme includes brightness adjustment information for each lamp zone. This brightness adjustment information specifically includes the coordinates of each lamp zone, the original brightness adjustment ratio, the optimized final brightness, and the final uniformity index. The lamp zone coordinates uniquely identify the lamp zone location. The original brightness adjustment ratio is obtained by a constrained light mixing coefficient matrix, a central lamp zone baseline constraint, a brightness range constraint, and a uniformity constraint using a constrained light mixing coefficient algorithm (SLSQP). This ratio characterizes the adjustment range of each lamp zone based on the standard brightness and can be directly applied to the backlight driving system to adjust the lamp zone brightness. The optimized final brightness is calculated based on the standard brightness and the original brightness adjustment ratio. The final uniformity index is the ratio of the minimum brightness to the maximum brightness of the optimized backlight display device. All of the above information is output completely and can be directly applied to the backlight driving system and for effect verification.

[0036] The brightness adjustment information is specified as the original brightness adjustment ratio of the lamp area. The adjustment method is intuitive and simple, and the physical meaning is clear. It can be adapted to backlight drive control without additional conversion. It can accurately and stably achieve brightness adjustment of each lamp area, ensuring that the optimization solution can be directly mass-produced in engineering, and effectively improve the brightness uniformity and display effect of backlight display devices.

[0037] In this embodiment of the application, the preset constraint information includes: The brightness of the central light area of ​​the backlight display device is the standard brightness; that is, the ratio of the brightness of the central light area to the standard brightness is 1.

[0038] The brightness of any lamp area in the backlight display device is within a preset brightness range; the preset brightness range can be 0.1~5.0 or 0.5~3.0. The brightness uniformity of the backlight display device is greater than or equal to a preset uniformity threshold; the brightness uniformity of the backlight display device is the ratio of the minimum brightness to the maximum brightness; wherein, the minimum brightness is the brightness of the lamp area with the lowest brightness in the backlight display device, and the maximum brightness is the brightness of the lamp area with the highest brightness in the backlight display device. The preset uniformity threshold can be 0.8.

[0039] This implementation method establishes a benchmark based on the brightness of the central light area, limits the brightness of the light area to a reasonable range, and sets a uniformity threshold. This ensures that the optimization process is stable and reliable, avoids abnormal and unreasonable brightness values, and ensures that the overall backlight meets the uniformity requirements after optimization. This effectively improves the brightness uniformity of the backlight display device and makes the optimization results more in line with actual usage needs.

[0040] In addition, the preset constraint information can also include minimizing the coefficient of variation of the final brightness (coefficient of variation = standard deviation ÷ mean). That is, the ratio of the standard deviation of brightness to the mean of brightness is used as the optimization objective function. The algorithm iterates to make this value as small as possible, so that the brightness distribution of all light areas is more concentrated, smoother and more uniform, avoiding local overbrightness or underbrightness.

[0041] Among them, the mean brightness can be the average value of the brightness of all light areas; the standard deviation of brightness can represent the degree to which the brightness of each light area deviates from the average value. The larger the standard deviation of brightness, the more uneven the brightness is; the smaller the standard deviation of brightness, the more stable and consistent the brightness is.

[0042] Step 104: Optimize each lamp zone of the backlight display device based on the brightness optimization scheme to obtain the optimized backlight display device.

[0043] In this embodiment, the initial brightness of each lamp zone can be uniformly adjusted to the standard brightness. The original brightness adjustment ratio corresponding to each lamp zone is obtained from the brightness optimization scheme. The standard brightness is multiplied by the adjustment ratio to obtain the final optimized brightness of each lamp zone. The lamp zone is driven and adjusted according to the final brightness to complete the overall backlight uniformity optimization and obtain an optimized backlight display device with brightness uniformity meeting the requirements.

[0044] This optimization method uses standard brightness as a unified benchmark and directly calculates the final brightness by adjusting the ratio. The logic is clear and the calculation is simple. It can be adapted to the backlight driving system without complicated conversion. It can quickly and stably achieve accurate calibration of the brightness of each lamp area, significantly improve the overall brightness uniformity of the backlight display device, and the optimization results are reliable and easy to implement in engineering and mass production.

[0045] As an optional implementation, step 104, which optimizes each lamp zone of the backlight display device based on the brightness optimization scheme to obtain the optimized backlight display device, may include: Adjust the initial brightness of each lamp zone of the backlight display device to the standard brightness; Obtain the adjustment ratio value corresponding to each lamp zone from the brightness optimization scheme; Based on the standard brightness and the adjustment ratio corresponding to each lamp zone, the optimized brightness corresponding to each lamp zone is determined. The optimized backlight display device is obtained by optimizing each lamp zone based on the optimized brightness corresponding to each lamp zone.

[0046] This implementation method uses standard brightness as a unified benchmark and combines the adjustment ratio in the brightness optimization scheme to determine the optimized brightness of each lamp zone. The adjustment logic is simple and clear, and the execution is efficient. It can be directly adapted to the backlight driving system without complicated conversion. It can quickly and stably achieve precise adjustment of the brightness of each lamp zone, effectively improve the overall brightness uniformity of the backlight display device, and the optimization effect is reliable and easy to implement in engineering.

[0047] By implementing steps 101 to 104 above, a mixing coefficient matrix for each lamp zone is constructed using the collected lamp zone layout information and the measured mixing coefficient template. Combined with a constrained optimization algorithm, a brightness optimization scheme is obtained. This scheme accurately matches the actual hardware characteristics of the device, effectively improving the brightness uniformity of the backlight display device and resulting in a smoother and more natural brightness distribution. Simultaneously, the constrained optimization algorithm ensures that the adjustment results are reasonable and reliable, avoiding abnormal brightness values. The scheme can be directly used for lamp zone brightness adjustment without complex manual adjustments, making operation simpler, more adaptable, and improving the overall display effect. Furthermore, this application allows the collected data to better reflect the actual hardware characteristics of the device, providing an accurate basis for subsequent matrix construction and optimization calculations, effectively improving the accuracy and reliability of backlight uniformity optimization. In addition, this application can realistically reflect the actual mixing relationship between lamp zones, making the mixing coefficient template more closely match real optical characteristics, providing reliable data support for subsequent matrix construction and brightness optimization, and significantly improving the accuracy and stability of backlight uniformity optimization. Furthermore, this application ensures a stable and reliable optimization process, avoiding abnormal and unreasonable brightness values, and guarantees that the overall backlight meets uniformity requirements after optimization, effectively improving the brightness uniformity of the backlight display device and making the optimization results more in line with actual usage needs. In addition, this application can quickly and stably achieve precise brightness adjustment of each lamp zone, effectively improving the overall brightness uniformity of the backlight display device, with reliable optimization results and easy engineering implementation.

[0048] The embodiments of this application have the following technical advantages: High modeling accuracy: The model is based on the measured mixing coefficient and the actual layout of the lighting area, which restores the physical characteristics of the edge without supplementary lighting. The model fits the actual hardware and the optimization results do not require secondary correction.

[0049] The optimization results are physically reasonable: by introducing dual constraints (uniformity + ratio range), non-physical values ​​such as negative brightness and infinity are completely avoided, and the output ratio can be directly used in engineering practice.

[0050] Full-process automation: Replacing the traditional manual calculation of ratios, the entire process from modeling to output is automated, improving efficiency by more than 90% and reducing human error.

[0051] Highly adaptable: Supports irregular light zone layouts (different rows and columns have different ranges), and can adapt to different specifications of Local Dimming backlight systems through coordinate adaptive mapping without modifying the core algorithm.

[0052] The embodiments of this application also have the following application scenarios: Mass production of display devices: Suitable for mass production debugging of direct-lit local dimming backlit TVs, monitors, automotive displays and other devices, quickly outputting lamp area brightness adjustment parameters to improve production efficiency.

[0053] Backlight system design optimization: Provides data support for the lamp zone layout and light mixing structure design of the backlight system, verifies the homogenization potential of different layouts through optimization results, and assists in design decisions.

[0054] Upgrade for existing equipment: It can be used to optimize the uniformity of existing backlight equipment without replacing hardware. The display effect can be improved simply by adjusting the original brightness ratio of the lamp area through software.

[0055] Based on the same inventive concept, this application also provides a backlight optimization device based on local dimming for implementing the backlight optimization method based on local dimming described above. The solution provided by this device is similar to the solution described in the above method. Therefore, the specific limitations of one or more embodiments of the backlight optimization device based on local dimming provided below can be found in the limitations of the backlight optimization method based on local dimming described above, and will not be repeated here.

[0056] In one exemplary embodiment, such as Figure 3 As shown, a backlight optimization device based on local dimming is provided, comprising: The acquisition unit 301 is used to acquire measured data of the backlight display device; wherein, the measured data includes at least lamp zone layout information and a mixing coefficient template for each lamp zone in the backlight display device; the lamp zone layout information includes the identifier and coordinates of each lamp zone; The first determining unit 302 is used to determine the mixing coefficient matrix of each light zone based on the measured data; The second determining unit 303 is used to determine the brightness optimization scheme of the backlight display device based on preset constraint information and using a constrained optimization algorithm; wherein the brightness optimization scheme includes brightness adjustment information for each lamp zone; The optimization unit 304 is used to optimize each lamp zone of the backlight display device based on the brightness optimization scheme to obtain the optimized backlight display device.

[0057] As an optional implementation method, the acquisition unit 301 can acquire the measured data of the backlight display device in the following specific ways: Collect data from multiple pre-set light zones on the backlight display device; A Cartesian coordinate system is constructed based on the backlight display device; Determine the identifier for each light zone and the coordinates of each light zone in the Cartesian coordinate system. The layout information of the backlight display device's light zones is determined based on the identifier and coordinates of each light zone; Based on the lighting layout information, determine the mixing coefficient template for each lighting area; The lamp layout information of the backlight display device and the mixing coefficient template of each lamp area are determined as the measured data of the backlight display device.

[0058] This implementation method, by establishing a coordinate system to accurately determine the identification and coordinates of the light zones, can truly reflect the actual layout of the light zones. Combined with the light zone layout to obtain the light mixing coefficient template, the collected data can better match the actual hardware characteristics of the equipment, providing an accurate basis for subsequent matrix construction and optimization calculations, and effectively improving the accuracy and reliability of backlight uniformity optimization.

[0059] As an optional implementation, the acquisition unit 301 determines the mixing coefficient template of a target lighting area based on the lighting area layout information in the following specific ways: Based on the lamp zone layout information, the multiple lamp zones of the backlight display device are determined as a target lamp zone and multiple mixed light lamp zones; Set the brightness of the plurality of mixed light areas to the standard brightness of the target light area; Determine the brightness contribution of each mixed light zone to the supplementary lighting of the target light zone; Based on the supplementary light contribution brightness corresponding to each mixing lamp area and the standard brightness, the mixing coefficient of each mixing lamp area to the target lamp area is determined; Based on the mixing coefficient corresponding to each mixing light area, a mixing coefficient template for the target light area is constructed.

[0060] This implementation method, by using a standardized brightness benchmark, accurately measures the brightness contribution of each mixing lamp area to the target lamp area and calculates the mixing coefficient. This can truly reflect the actual mixing relationship between lamp areas, making the mixing coefficient template more closely match the real optical characteristics. This provides reliable data support for subsequent matrix construction and brightness optimization, and significantly improves the accuracy and stability of backlight uniformity optimization.

[0061] In this embodiment of the application, the preset constraint information includes: The brightness of the central lamp area of ​​the backlight display device is the standard brightness. The brightness of any lamp area in the backlight display device is within a preset brightness range; the preset brightness range is 0.1~5.0 or 0.5~3.0. The brightness uniformity of the backlight display device is greater than or equal to a preset uniformity threshold; the brightness uniformity of the backlight display device is the ratio of the minimum brightness to the maximum brightness; wherein, the minimum brightness is the brightness of the lamp area with the lowest brightness in the backlight display device, and the maximum brightness is the brightness of the lamp area with the highest brightness in the backlight display device.

[0062] This implementation method establishes a benchmark based on the brightness of the central light area, limits the brightness of the light area to a reasonable range, and sets a uniformity threshold. This ensures that the optimization process is stable and reliable, avoids abnormal and unreasonable brightness values, and ensures that the overall backlight meets the uniformity requirements after optimization. This effectively improves the brightness uniformity of the backlight display device and makes the optimization results more in line with actual usage needs.

[0063] As an optional implementation, the optimization unit 304 optimizes each lamp zone of the backlight display device based on the brightness optimization scheme, and the optimized backlight display device can be obtained in the following ways: Adjust the initial brightness of each lamp zone of the backlight display device to the standard brightness; Obtain the adjustment ratio value corresponding to each lamp zone from the brightness optimization scheme; Based on the standard brightness and the adjustment ratio corresponding to each lamp zone, the optimized brightness corresponding to each lamp zone is determined. The optimized backlight display device is obtained by optimizing each lamp zone based on the optimized brightness corresponding to each lamp zone.

[0064] This implementation method uses standard brightness as a unified benchmark and combines the adjustment ratio in the brightness optimization scheme to determine the optimized brightness of each lamp zone. The adjustment logic is simple and clear, and the execution is efficient. It can be directly adapted to the backlight driving system without complicated conversion. It can quickly and stably achieve precise adjustment of the brightness of each lamp zone, effectively improve the overall brightness uniformity of the backlight display device, and the optimization effect is reliable and easy to implement in engineering.

[0065] By implementing the above methods, a mixing coefficient matrix for each lamp zone is constructed using the collected lamp zone layout information and the measured mixing coefficient template. Combined with a constrained optimization algorithm, a brightness optimization scheme is obtained. This scheme accurately matches the actual hardware characteristics of the device, effectively improving the brightness uniformity of the backlight display and resulting in a smoother, more natural brightness distribution. Simultaneously, the constrained optimization algorithm ensures the adjustment results are reasonable and reliable, avoiding abnormal brightness values. The scheme can be directly used for lamp zone brightness adjustment without complex manual adjustments, making operation simpler, more adaptable, and improving the overall display effect. Furthermore, this application allows the collected data to better reflect the actual hardware characteristics of the device, providing an accurate basis for subsequent matrix construction and optimization calculations, effectively improving the accuracy and reliability of backlight uniformity optimization. In addition, this application can realistically reflect the actual mixing relationship between lamp zones, making the mixing coefficient template more closely match real optical characteristics, providing reliable data support for subsequent matrix construction and brightness optimization, and significantly improving the accuracy and stability of backlight uniformity optimization. Furthermore, this application ensures a stable and reliable optimization process, avoiding abnormal and unreasonable brightness values, and guarantees that the overall backlight meets uniformity requirements after optimization, effectively improving the brightness uniformity of the backlight display device and making the optimization results more in line with actual usage needs. In addition, this application can quickly and stably achieve precise brightness adjustment of each lamp zone, effectively improving the overall brightness uniformity of the backlight display device, with reliable optimization results and easy engineering implementation.

[0066] In one exemplary embodiment, a computer device is provided, which may be a server or a terminal, and its internal structure diagram may be as follows. Figure 4 As shown, this computer device includes a processor, memory, input / output (I / O) interfaces, and a communication interface. The processor, memory, and I / O interfaces are connected via a system bus, and the communication interface is also connected to the system bus via the I / O interfaces. The processor provides computational and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and a database. The internal memory provides the environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The database stores backlight optimization data based on local dimming. The I / O interfaces are used for exchanging information between the processor and external devices. The communication interface is used for communication with external terminals via a network connection. When the computer program is executed by the processor, it implements a backlight optimization method based on local dimming.

[0067] Those skilled in the art will understand that Figure 4The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0068] In one exemplary embodiment, a computer device is also provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps in the above-described method embodiments.

[0069] In one exemplary embodiment, a computer-readable storage medium is provided storing a computer program that, when executed by a processor, implements the steps in the above-described method embodiments.

[0070] In one exemplary embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps in the above-described method embodiments.

[0071] In one exemplary embodiment, a chip is provided, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run programs or instructions to implement the steps in the above method embodiments and achieve the same technical effect, and will not be described again here to avoid repetition.

[0072] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0073] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant data must comply with relevant regulations.

[0074] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments described above. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM).

[0075] The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0076] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0077] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A method for backlight optimization based on local dimming, characterized in that, The backlight optimization method based on local dimming includes: Collect measured data of the backlight display device; wherein, the measured data includes at least lamp zone layout information and a mixing coefficient template for each lamp zone in the backlight display device; the lamp zone layout information includes the identifier and coordinates of each lamp zone; Based on the measured data, the mixing coefficient matrix for each light zone is determined; Based on preset constraint information, a constrained optimization algorithm is used to determine the brightness optimization scheme of the backlight display device; wherein, the brightness optimization scheme includes brightness adjustment information for each lamp zone; Based on the brightness optimization scheme, each lamp zone of the backlight display device is optimized to obtain the optimized backlight display device.

2. The local dimming-based backlight optimization method of claim 1, wherein, The measured data collected from the backlight display device specifically includes: Collect data from multiple pre-set light zones on the backlight display device; A Cartesian coordinate system is constructed based on the backlight display device; Determine the identifier for each light zone and the coordinates of each light zone in the Cartesian coordinate system. The layout information of the backlight display device's light zones is determined based on the identifier and coordinates of each light zone; Based on the lighting layout information, determine the mixing coefficient template for each lighting area; The lamp layout information of the backlight display device and the mixing coefficient template of each lamp area are determined as the measured data of the backlight display device.

3. The backlight optimization method based on local dimming according to claim 2, characterized in that, Based on the aforementioned lighting layout information, a mixing coefficient template for a target lighting area is determined, specifically including: Based on the lamp zone layout information, the multiple lamp zones of the backlight display device are determined as a target lamp zone and multiple mixed light lamp zones; Set the brightness of the plurality of mixed light areas to the standard brightness of the target light area; Determine the brightness contribution of each mixed light zone to the supplementary lighting of the target light zone; Based on the supplementary light contribution brightness corresponding to each mixing lamp area and the standard brightness, the mixing coefficient of each mixing lamp area to the target lamp area is determined; Based on the mixing coefficient corresponding to each mixing light area, a mixing coefficient template for the target light area is constructed.

4. The backlight optimization method based on local dimming according to claim 3, characterized in that, The preset constraint information includes: The brightness of the central lamp area of ​​the backlight display device is the standard brightness. The brightness of any one of the lamp zones in the backlight display device is within a preset brightness range; The brightness uniformity of the backlight display device is greater than or equal to a preset uniformity threshold.

5. The backlight optimization method based on local dimming according to claim 4, characterized in that, The preset brightness range is 0.1~5.0 or 0.5~3.0; The brightness uniformity of the backlight display device is the ratio of the minimum brightness to the maximum brightness; wherein, the minimum brightness is the brightness of the lamp area with the lowest brightness in the backlight display device, and the maximum brightness is the brightness of the lamp area with the highest brightness in the backlight display device.

6. The backlight optimization method based on local dimming according to claim 5, characterized in that, The step of optimizing each lamp zone of the backlight display device based on the brightness optimization scheme to obtain an optimized backlight display device specifically includes: Adjust the initial brightness of each lamp zone of the backlight display device to the standard brightness; Obtain the adjustment ratio value corresponding to each lamp zone from the brightness optimization scheme; Based on the standard brightness and the adjustment ratio corresponding to each lamp zone, the optimized brightness corresponding to each lamp zone is determined. The optimized backlight display device is obtained by optimizing each lamp zone based on the optimized brightness corresponding to each lamp zone.

7. A backlight optimization device based on local dimming, characterized in that, The backlight optimization device based on local dimming includes: The acquisition unit is used to acquire measured data of the backlight display device; wherein, the measured data includes at least lamp zone layout information and a mixing coefficient template for each lamp zone in the backlight display device; the lamp zone layout information includes the identifier and coordinates of each lamp zone; The first determining unit is used to determine the mixing coefficient matrix of each light zone based on the measured data; The second determining unit is used to determine the brightness optimization scheme of the backlight display device based on preset constraint information and using a constrained optimization algorithm; wherein the brightness optimization scheme includes brightness adjustment information for each lamp zone; An optimization unit is used to optimize each lamp zone of the backlight display device based on the brightness optimization scheme to obtain an optimized backlight display device.

8. A computer device, comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that the processor executes the computer program to implement the steps of the backlight optimization method based on local dimming as described in any one of claims 1-6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, the computer program implements the steps of the backlight optimization method based on local dimming as described in any one of claims 1-6.

10. A computer program product, comprising a computer program, characterized in that, When executed by a processor, the computer program implements the steps of the backlight optimization method based on local dimming as described in any one of claims 1-6.

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