Dimming display method, device, display device and computer-readable storage medium

Abstract

This application discloses a dimming display method, apparatus, display device, and computer-readable storage medium, relating to the field of display technology. The method includes determining a zoned dimming region based on high dynamic range information of an image to be displayed; determining a display scene attribute of the image to be displayed; and performing a dimming display operation mapped to the display scene attribute based on the zoned dimming region. This application improves the display quality of a display device by improving backlight dimming performance.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a dimming display method, apparatus, display device, and computer-readable storage medium. Background Art

[0002] With the continuous development of display technology, backlight dimming technology, as a key means to improve display quality and energy efficiency, has become an important technological development direction in the display field.

[0003] Common backlight dimming technology divides an array of micro-LEDs (Light Emitting Diodes) into several small, independently adjustable brightness zones. However, this traditional backlight dimming technology has certain drawbacks. Specifically, in HDR (High-Dynamic Range) display scenarios, the lack of precision in the local backlight control algorithm can easily lead to brightness bleeding; in high-contrast display scenarios, the brightness differences between adjacent zones can easily cause pseudo-contours; in fast-moving display scenarios, the asynchrony between the backlight response speed and the frame refresh rate can easily cause smearing; in wide-color gamut display scenarios, the complexity of the color mixing mechanism can seriously affect the uniformity of the LED light source; and in energy-saving display scenarios, the lack of precision in the backlight dimming technology can easily induce screen flicker or abnormal backlight adjustment, which can seriously affect the display quality of the display device.

[0004] Therefore, how to improve the backlight dimming performance to enhance the display quality of the display device is a technical problem that needs to be solved urgently. Summary of the Invention

[0005] The main purpose of this application is to provide a dimming display method, apparatus, display device and computer-readable storage medium, aiming to improve backlight dimming performance to enhance the display quality of the display device.

[0006] To achieve the above objectives, the present application provides a dimming display method, which includes:

[0007] Determine the zone dimming area based on the high dynamic range information of the image to be displayed;

[0008] Determine the display scene attribute of the image to be displayed, and perform a dimming display operation mapped by the display scene attribute according to the partitioned dimming area.

[0009] In one embodiment, there are multiple zoned dimming areas. When the display scene attribute is a high dynamic range display scene, the step of performing the dimming display operation mapped with the display scene attribute according to the zoned dimming areas includes:

[0010] In response to the high dynamic range display scene, traversing whether the brightness difference between adjacent partitioned dimming areas is greater than a preset brightness penetration threshold;

[0011] When the brightness difference is greater than the brightness penetration threshold, a brightness transition boundary between adjacent subarea dimming areas is determined, and image edge enhancement processing is performed according to the subarea dimming areas on both sides of the brightness transition boundary.

[0012] In one embodiment, when the display scene attribute is a high-contrast display scene, the step of performing the dimming display operation mapped with the display scene attribute according to the zoned dimming areas includes:

[0013] In response to the high-contrast display scene, a brightness boundary line is determined according to the brightness difference of adjacent pixels in the partitioned dimming area, and edge enhancement filtering processing is performed on the image pixel points on the brightness boundary line.

[0014] In one embodiment, the step of determining a brightness boundary line based on brightness differences between adjacent pixels in the zoned dimming area includes:

[0015] Determining the average brightness of pixels in the partitioned dimming area, and obtaining a false contour suppression threshold according to the product data of a preset false contour suppression factor and the average brightness of the pixels;

[0016] Checking whether the brightness difference between adjacent pixels of each image pixel and adjacent pixels in the partitioned dimming area exceeds the false contour suppression threshold;

[0017] Until all the image pixel points whose brightness difference between adjacent pixels exceeds the pseudo contour suppression threshold are traversed, each image pixel point whose brightness difference between adjacent pixels exceeds the pseudo contour suppression threshold is marked as a brightness boundary point, and a brightness boundary line is constructed based on all the brightness boundary points.

[0018] In one embodiment, when the display scene attribute is a fast-moving display scene, the step of performing the dimming display operation mapped with the display scene attribute according to the zoned dimming areas includes:

[0019] In response to the dimming display operation of the fast-moving display scene mapping being a smear suppression operation, determining ratio data between a frame frequency and an initial frame interval within the partitioned dimming area;

[0020] Detecting whether a product threshold of a moving target's moving speed within the zone dimming area and the ratio data does not exceed a preset smear elimination response time;

[0021] If the product threshold does not exceed the smear elimination response time, in response to the smear suppression operation, the initial frame interval is updated according to a preset frame interval reduction threshold, and the step of determining the ratio data between the frame frequency in the zoned dimming area and the initial frame interval is returned to based on the updated initial frame interval;

[0022] When the product threshold exceeds the smear elimination response time, the smear suppression operation is terminated.

[0023] In one embodiment, when the display scene attribute is a wide color gamut display scene, the step of performing the dimming display operation mapped by the display scene attribute according to the zoned dimming area includes:

[0024] In response to the wide color gamut display scene, determine the actual backlight adjustment delay and the backlight color mixing time of the zoned dimming area, and determine whether the sum of the preset reserved mixing delay and the backlight color mixing time exceeds the actual backlight adjustment delay;

[0025] If the total time exceeds the actual backlight adjustment delay, a backlight delay processing operation is performed according to the reserved mixing delay.

[0026] In one embodiment, when the display scene attribute is an energy-saving display scene, the step of performing the dimming display operation mapped by the display scene attribute according to the zoned dimming area includes:

[0027] Determine a dynamic power consumption adjustment factor for the zoned dimming area in the energy-saving display scenario, and multiply the power demand difference between a preset maximum power demand value and an actual power demand value of the zoned dimming area by the dynamic power consumption adjustment factor and then add the result to the current maximum display brightness in the zoned dimming area to obtain a power constraint brightness threshold;

[0028] After adjusting the partitioned energy-saving brightness value of the partitioned dimming area to be less than the power constraint brightness threshold, an energy-saving dimming operation is performed on the partitioned dimming area according to the partitioned energy-saving brightness value.

[0029] In addition, to achieve the above-mentioned purpose, the present application further provides a dimming display device, the dimming display device comprising:

[0030] A dimming partition module is used to determine the partition dimming area according to the high dynamic range information of the image to be displayed;

[0031] A dimming operation module is used to determine the display scene attribute of the image to be displayed, and perform a dimming display operation mapped with the display scene attribute according to the partitioned dimming area.

[0032] Each functional module of the dimming display device of the present application implements the steps of the dimming display method of the present application as described above during operation.

[0033] In addition, to achieve the above-mentioned purpose, the present application also provides a display device, which includes a memory, a processor, and a dimming display program stored on the memory and runnable on the processor, and when the processor executes the dimming display program, it implements the steps of any one of the above-mentioned dimming display methods.

[0034] In addition, to achieve the above-mentioned purpose, the present application also provides a computer-readable storage medium, on which a dimming display program is stored. When the dimming display program is executed by a processor, the steps of any of the above-mentioned dimming display methods are implemented.

[0035] The dimming display method provided in the present application improves the display quality of the display device by improving the backlight dimming performance. Specifically, the zoned dimming area can be accurately determined based on the high dynamic range information of the image to be displayed, thereby realizing the reasonable division of the zoned dimming area; next, after determining the display scene attributes of different zoned dimming areas, the dimming display operation corresponding to the display scene attribute mapping is performed on the zoned dimming area, that is, according to the display scene attributes of different zoned dimming areas, the corresponding dimming display operation is performed, thereby realizing accurate adaptation to various complex display scenes (such as high dynamic range display scenes, high contrast display scenes, fast moving display scenes, wide color gamut display scenes, and energy-saving display scenes). It not only avoids the common problems of brightness penetration, pseudo contour, tailing, color unevenness, and screen flicker in traditional backlight dimming technology, but also significantly improves the brightness uniformity, color reproduction, contrast, and dynamic range of the display device, thereby comprehensively improving the display quality of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0037] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0038] Figure 1 This is a flow chart of the first embodiment of the dimming display method of the present application;

[0039] Figure 2 This is a schematic diagram of the dimming process of the embodiment of the present application in a high dynamic range display scenario;

[0040] Figure 3 This is a schematic diagram of the dimming process of the embodiment of the present application in a high-contrast display scenario;

[0041] Figure 4 This is a schematic diagram of the dimming process of the embodiment of the present application in a fast-moving display scenario;

[0042] Figure 5 This is a schematic diagram of the dimming process of the embodiment of the present application in a wide color gamut display scenario;

[0043] Figure 6 This is a schematic diagram of the dimming process of the embodiment of the present application in an energy-saving display scenario;

[0044] Figure 7 This is a schematic diagram of the structure of the display device involved in the embodiment of the present application.

[0045] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0046] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0047] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0048] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0049] Exemplary embodiments are described in detail herein, with examples illustrated in the accompanying drawings. When the following description refers to the drawings, identical numerals in different drawings represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with this application.

[0050] With the continuous development of display technology, backlight dimming technology, as a key means to improve display quality and energy efficiency, has become an important technological development direction in the display field.

[0051] Common backlight dimming technology divides an array of micro-LEDs (Light Emitting Diodes) into several independently dimming zones. However, this traditional backlight dimming technology has certain drawbacks. For example, in HDR (High-Dynamic Range) display scenarios, insufficient precision in the local backlight control algorithm can lead to brightness bleeding. When displaying high-contrast images, differences in brightness between adjacent zones can cause noticeable pseudo-outlines. In fast-moving scenes, backlight adjustment can fail to synchronize with rapid image changes, resulting in smearing. When pursuing wide color gamut performance, the complexity of color mixing increases the difficulty of controlling the uniformity of the LED light source, which can easily lead to uneven color distribution. Furthermore, when operating in power-saving mode, if the dynamic dimming method employed lacks sufficient precision, it can cause slight flickering on the display or uncontrolled backlight adjustment, seriously impacting the display quality.

[0052] Therefore, how to improve the backlight dimming performance to enhance the display quality of the display device is a technical problem that needs to be solved urgently.

[0053] The above content is only used to assist in understanding the technical solution of this application and does not constitute an admission that the above content is prior art.

[0054] In order to solve the technical defects existing in the above content, the present application provides a dimming display method, device, display equipment and computer-readable storage medium.

[0055] The present application provides a dimming display method, referring to Figure 1 As shown, Figure 1 FIG1 is a flow chart of the first embodiment of the dimming display method of the present application. The dimming display method provided in the present application includes the following implementation steps S10 to S20.

[0056] Step S10: determining a zone dimming area according to high dynamic range information of the image to be displayed.

[0057] In this embodiment, the high dynamic range information of the image to be displayed may include at least the pixel brightness value of each image pixel; next, the pixel brightness value of each image pixel is mapped to the grayscale range [0, 255] to count the number of pixels at each grayscale level, and then a brightness histogram with the grayscale value range as the horizontal axis and the number of pixels as the vertical axis can be generated, and the brightness histogram is smoothed and filtered to effectively eliminate noise interference and local fluctuations, so that the brightness peak area of ​​the brightness histogram is smoother and more stable, thereby more accurately identifying the central trend of the brightness distribution; next, the brightness histogram after smoothing and filtering is traversed to identify significant peaks. If there are at least two significant peaks, values ​​(i.e., significant peak T1 and significant peak T2, and the grayscale value corresponding to the significant peak peak T1 is less than the grayscale value corresponding to the significant peak peak T2); next, the minimum valley value between the significant peak peak T1 and the significant peak peak T2 is determined, and then the partitioned dimming area of ​​the image to be displayed is divided according to the minimum valley value. Specifically, each image pixel point with a pixel brightness value in the range of [0, grayscale corresponding to the minimum valley value) is divided into a dark area, each image pixel point with a pixel brightness value in the range of [grayscale corresponding to the minimum valley value, significant peak T2) is divided into an intermediate transition area, and each image pixel point with a pixel brightness value in the range of [significant peak T2, 255] is divided into a highlight area.

[0058] In another embodiment, if there are less than two significant peak values ​​in the brightness histogram after smoothing filtering, the partitioned dimming areas of the image to be displayed are divided according to a preset fixed division threshold. Specifically, the preset fixed division threshold is the interval [0, 50) corresponding to the dark area, the interval [50, 200) corresponding to the intermediate transition area, and the interval [200, 255] corresponding to the highlight area, that is, each image pixel point with a pixel brightness value in the interval [0, 50) is divided into a dark area, each image pixel point with a pixel brightness value in the interval [50, 200) is divided into an intermediate transition area, and each image pixel point with a pixel brightness value in the interval [200, 255] is divided into a highlight area, so as to achieve a reasonable division of the partitioned dimming areas.

[0059] Step S20: determining a display scene attribute of the image to be displayed, and performing a dimming display operation mapped with the display scene attribute according to the zoned dimming areas.

[0060] In this embodiment, after determining the display scene attributes of different partitioned dimming areas, dimming display operations corresponding to the display scene attribute mapping are performed on the partitioned dimming areas, that is, corresponding dimming display operations are performed according to the display scene attributes of different partitioned dimming areas, thereby achieving precise adaptation to various complex display scenes (such as high dynamic range display scenes, high contrast display scenes, fast moving display scenes, wide color gamut display scenes, and energy-saving display scenes). It not only avoids the common problems of brightness penetration, pseudo contours, tailing, color unevenness, and screen flicker in traditional backlight dimming technologies, but also significantly improves the brightness uniformity, color reproduction, contrast, and dynamic range of the display device, thereby comprehensively improving the display quality of the display device.

[0061] Furthermore, based on the first embodiment of the dimming display method of the present application, a second embodiment of the dimming display method of the present application is proposed. In some feasible embodiments, there are multiple zoned dimming areas, and when the display scene attribute is a high dynamic range display scene, the above step S20: performing the dimming display operation mapped to the display scene attribute according to the zoned dimming areas, further includes the following implementation steps S201 to S202.

[0062] Step S201: In response to the high dynamic range display scene, traverse and check whether the brightness difference between adjacent zone dimming areas is greater than a preset brightness penetration threshold.

[0063] In this embodiment, the present application divides multiple partitioned dimming areas based on the high dynamic range information of the image to be displayed, and calculates the regional average brightness of each partitioned dimming area; next, based on the regional average brightness corresponding to each adjacent partitioned dimming area, the brightness difference between adjacent partitioned dimming areas can be accurately calculated; next, the brightness difference between adjacent partitioned dimming areas is traversed to see whether it is greater than a preset brightness penetration threshold, and then it can be accurately determined whether there is brightness penetration between adjacent partitioned dimming areas in the high dynamic range display scenario.

[0064] It should be noted that adjacent zone dimming areas may be a dark area and a bright area, a dark area and an intermediate transition area, and / or a bright area and an intermediate transition area.

[0065] Step S202: until the brightness difference value obtained through traversal is greater than the brightness penetration threshold, determining the brightness transition boundary between adjacent partitioned dimming areas, and performing image edge enhancement processing based on the partitioned dimming areas on both sides of the brightness transition boundary.

[0066] In this embodiment, until the brightness difference between adjacent partitioned dimming areas is greater than a preset brightness penetration threshold, the brightness transition boundary between adjacent partitioned dimming areas is marked as a high penetration risk area; next, the partitioned dimming areas on both sides of the brightness transition boundary marked as the high penetration risk area are subjected to image edge enhancement processing to avoid the brightness penetration phenomenon of adjacent partitioned dimming areas in high dynamic range display scenarios, thereby significantly improving the display quality of the display device in high dynamic range display scenarios.

[0067] In a specific embodiment, referring to Figure 2 , Figure 2 This is a schematic diagram of the dimming process of the embodiment of the present application in a high dynamic range display scenario. Taking the dark area and the highlight area as an example of adjacent partition dimming areas, after determining the regional average brightness of the highlight area as BA and the regional average brightness of the dark area as BB, the brightness difference B_diff = BA-BB between the highlight area and the dark area can be determined to reflect the degree of brightness change in the adjacent partition dimming areas; next, it is detected whether the brightness difference B_diff exceeds the preset brightness penetration threshold; if the brightness difference B_diff exceeds the preset brightness penetration threshold, the brightness transition boundary between the highlight area and the dark area is marked as a high penetration risk area; next, in response to the brightness transition boundary between the highlight area and the dark area being a high penetration risk area, the regional average brightness BA of the highlight area is reduced to BA'=BA-highlight area attenuation coefficient α*(B_diff-T1), and the regional average brightness BB of the dark area is increased to BB'=BB+dark area attenuation coefficient β*(B_diff-T1), and the adjusted brightness difference B_diff is recalculated until the brightness difference B_diff ≤ the preset brightness penetration threshold, thereby effectively suppressing brightness penetration phenomena such as haloing caused by excessive brightness differences between adjacent partitioned dimming areas. At the same time, it avoids the loss of dark details due to excessive dimming or highlight overexposure due to excessive brightening, thereby improving the display effect of the image to be displayed in high dynamic range display scenarios and significantly improving the display quality of the display device.

[0068] Furthermore, in some other feasible embodiments, when the display scene attribute is a high-contrast display scene, the above step S20: performing the dimming display operation mapped with the display scene attribute according to the partitioned dimming area, further includes the following implementation step A10.

[0069] Step A10: In response to the high-contrast display scene, a brightness boundary line is determined according to the brightness difference of adjacent pixels in the partitioned dimming area, and edge enhancement filtering processing is performed on the image pixels on the brightness boundary line.

[0070] In this embodiment, since the pseudo-contour phenomenon usually occurs in high-contrast areas, causing the image to appear rough and discontinuous, when the partitioned dimming area is in a high-contrast display scene, the position of the brightness boundary line can be accurately identified by analyzing the brightness difference of adjacent pixels in the partitioned dimming area, and edge enhancement filtering processing is performed on the image pixels on the brightness boundary line, that is, an edge enhancement filtering procedure is performed on all image pixels marked as brightness boundary lines. In other words, after Laplace edge enhancement is performed on the image pixels marked as brightness boundary lines, the edge-enhanced brightness boundary lines are smoothed by Gaussian filtering operations to avoid jagged effects to enhance boundary clarity, thereby improving image details and ensuring that users can experience a smooth and seamless effect even in highly complex picture areas, thereby significantly improving the display quality of the display device.

[0071] It should be noted that the algorithm corresponding to Laplace edge enhancement is L'(x,y)=L(x,y)+r* 2L(x,y), r=0.8~1.2; where L'(x,y) represents the brightness value of the image pixel at its coordinate (x,y) after edge enhancement; L(x,y) represents the brightness value of the image pixel marked as the brightness boundary line at its coordinate (x,y). 2L(x,y) represents the calculation result of the second-order derivative of the Laplacian operator for the image pixel at its coordinate (x,y); r represents the sharpening intensity coefficient, which can range from 0.8 to 1.2 and can also be customized based on the image display content and requirements.

[0072] Furthermore, in some feasible embodiments, the above step A10: determining the brightness boundary line according to the brightness difference of adjacent pixels in the zoned dimming area, further includes the following implementation steps A101 to A103.

[0073] Step A101: Determine the average brightness of pixels in the sub-region dimming area, and obtain a false contour suppression threshold according to the product data of a preset false contour suppression factor and the average brightness of the pixels.

[0074] In this embodiment, the average brightness of pixels in the partitioned dimming area (i.e., the regional average brightness) is determined. Next, a threshold for suppressing excessive contrast effects (i.e., a pseudo contour suppression threshold) is created based on a preset pseudo contour suppression factor C_cont and the average pixel brightness L_avg. The pseudo contour suppression threshold T_cont = C_cont * L_avg, where the pseudo contour suppression factor C_cont∈(0,1) can also be customized according to application requirements.

[0075] Step A102: Check whether the brightness difference between adjacent pixels of each image pixel and adjacent pixels in the partitioned dimming area exceeds the false contour suppression threshold.

[0076] In this embodiment, when the partitioned dimming area is in a high-contrast display scene, the brightness difference between adjacent pixels of each image pixel and adjacent pixels in the partitioned dimming area is traversed to see whether it exceeds a preset pseudo-contour suppression threshold to identify the image pixel portion where the unwanted brightness step sense needs to be eliminated or alleviated by increasing the boundary definition.

[0077] In a specific embodiment, the step of calculating the adjacent pixel brightness difference between each image pixel and adjacent pixel points includes steps 100 to 200 .

[0078] Step 100: Calculate the brightness gradient amplitude of each image pixel in the partitioned dimming area .

[0079] in, Indicates the The brightness gradient amplitude of each image pixel, Indicates the The image pixel point has its horizontal coordinate The brightness level gradient, Indicates the The image pixel point has its vertical coordinate The vertical gradient of brightness.

[0080] Step 200: Based on the difference between the brightness gradient amplitude of each image pixel and the brightness gradient amplitude of the adjacent pixel, the adjacent pixel brightness difference L_diff between each image pixel and the adjacent pixel can be accurately obtained.

[0081] Step A103: until all the image pixel points whose brightness difference between adjacent pixels exceeds the pseudo contour suppression threshold are traversed, mark each image pixel point whose brightness difference between adjacent pixels exceeds the pseudo contour suppression threshold as a brightness boundary point, and construct a brightness boundary line based on all the brightness boundary points.

[0082] In this embodiment, until all image pixel points whose adjacent pixel brightness differences exceed the pseudo contour suppression threshold are traversed, each image pixel point whose adjacent pixel brightness difference exceeds the pseudo contour suppression threshold is marked as a brightness boundary point, thereby achieving accurate marking of the brightness mutation points in the partitioned dimming area; next, a continuous brightness boundary line is constructed based on the spatial distribution of these discrete brightness boundary points, so as to perform edge enhancement filtering processing on the image pixel points on the brightness boundary line, thereby effectively suppressing the pseudo contour phenomenon of the image display, thereby significantly improving the display quality of the display device.

[0083] In a specific embodiment, referring to Figure 3 , Figure 3 This is a schematic diagram of the dimming process of an embodiment of the present application in a high-contrast display scenario, that is, the dimming display method in a high-contrast display scenario may include steps 10 to 40.

[0084] Step 10: For each image pixel point, the pixel position P ( , ), calculate the adjacent pixel brightness difference L_diff between it and the image pixel points at adjacent positions (ie, adjacent pixel points).

[0085] Step 20: Create a threshold (ie, a false contour suppression threshold) for suppressing excessive contrast effects according to a preset false contour suppression factor C_cont and pixel average brightness L_avg. The false contour suppression threshold T_cont = C_cont * L_avg.

[0086] Step 30: If the brightness difference L_diff between adjacent pixels is greater than the pseudo contour suppression threshold T_cont, then mark the pixel position P ( , ) is part of the brightness boundary line.

[0087] Step 40: For all pixel positions marked as brightness boundary lines, use an edge enhancement filter to optimize the boundaries.

[0088] For example, consider an image with a strong brightness gradient displayed on a Mini-LED (sub-millimeter light-emitting diode) display—for example, a night scene photo in which a bright city skyline is reflected on a dark pool of water. The Mini-LED display might detect high brightness variations at the edges of the water and sky, accurately demarcate these boundary areas through steps 10 to 40, and then enhance the clarity of these boundaries. This ensures the depth of the sky while avoiding unwanted artificial boundaries in the dark water. This improves the accuracy and sophistication of Mini-LED backlight management, contributing to a more natural visual experience.

[0089] Furthermore, in some other feasible embodiments, when the display scene attribute is a fast-moving display scene, the above-mentioned step S20: performing the dimming display operation mapped with the display scene attribute according to the partitioned dimming area, also includes the following implementation steps B10 to B40.

[0090] Step B10: In response to the dimming display operation of the fast-moving display scene mapping being a smear suppression operation, determining ratio data between a frame frequency within the partitioned dimming area and an initial frame interval.

[0091] In this embodiment, referring to Figure 4 , Figure 4 This is a schematic diagram of the dimming process in a fast-moving display scenario according to an embodiment of the present application. When the zoned dimming area is in a fast-moving display scenario, the dimming display operation mapped in response to the fast-moving display scenario is a smear suppression operation, and the ratio data between the frame frequency F and the initial frame interval M within the zoned dimming area is determined.

[0092] It should be noted that the initial frame interval M is set to take into account the actual perceived impact of different refresh rates on latency, with the aim of reducing the impact of drag effects.

[0093] Step B20: Detect whether a product threshold of the moving speed of the moving target within the zone dimming area and the ratio data does not exceed a preset smear elimination response time.

[0094] In this embodiment, referring to Figure 4 , detects whether the movement speed MV* (frame frequency F / initial frame interval M) of the moving target in the zone dimming area exceeds the preset smear elimination response time Δt, and then accurately determines whether the Mini-LED display has sufficient response capability to effectively eliminate the smear phenomenon in fast-moving display scenarios.

[0095] It should be noted that the preset ghosting elimination response time can be understood as the backlight adjustment time of the backlight beads in the zoned dimming area to respond normally in a fast-moving display scenario. The backlight adjustment time is a preset value and can be the median, mode or average of multiple historical backlight normal response times. This application does not impose any restrictions here.

[0096] Step B30: If the product threshold does not exceed the smear elimination response time, updating the initial frame interval according to a preset frame interval reduction threshold, and returning to the step of determining the ratio data between the frame frequency in the zoned dimming area and the initial frame interval based on the updated initial frame interval;

[0097] Step B40: terminating the smear suppression operation until the product threshold exceeds the smear elimination response time.

[0098] In this embodiment, referring to Figure 4If MV*(F / M)≤Δt, the initial frame interval is updated according to a preset frame interval reduction threshold to obtain an updated initial frame interval M=M- M_reduce, where M_reduce represents the preset frame interval reduction threshold, thereby improving the local refresh rate of the partitioned dimming area; next, based on the updated initial frame interval, the step of determining the ratio data between the frame frequency and the initial frame interval in the partitioned dimming area is returned to, so that the brightness update delay caused by the dynamic image can be more effectively adjusted by adjusting the ratio data (F / M), until MV*(F / M)>Δt, the smear suppression operation is terminated to ensure clear and smear-free image output in fast-moving display scenes.

[0099] Furthermore, in another embodiment, after completing the edge enhancement filtering processing of the image pixel points on the brightness boundary line, in response to the display scene attribute of the partitioned dimming area being a fast-moving display scene, the frame frequency and frame interval of the moving target in the partitioned dimming area are determined; the movement speed MV of the moving target in the partitioned dimming area is detected, and the speed is multiplied by the ratio data between the frame frequency F and the frame interval M to determine whether it does not exceed the preset ghost elimination response time Δt; if MV*(F / M)≤Δt, that is, the movement speed MV* (frame frequency F / initial frame interval M) of the moving target in the partitioned dimming area is less than or equal to the ghost elimination response time, the initial frame interval M is dynamically adjusted to reduce the corresponding backlight adjustment delay to suppress the ghosting phenomenon of the screen display. For example, if MV*(F / M) ≤ Δt and a moving target (i.e., a fast-moving object) is detected at a brightness boundary after edge enhancement, the initial frame interval M is reduced to update the product threshold MV*(F / M) until MV*(F / M) > Δt. This dynamically adjusts the (F / M) ratio to increase the local refresh rate and reduce update latency, thereby combating the smearing problem. This makes high-speed moving parts smoother and prevents discontinuity in human perception.

[0100] Furthermore, in some feasible embodiments, when the display scene attribute is a wide color gamut display scene, the above-mentioned step S20: performing the dimming display operation mapped with the display scene attribute according to the partitioned dimming area, also includes the following implementation steps C10 to C20.

[0101] Step C10: In response to the wide color gamut display scene, determine the actual backlight adjustment delay and backlight color mixing time of the partitioned dimming area, and determine whether the total time between the preset reserved mixing delay and the backlight color mixing time exceeds the actual backlight adjustment delay.

[0102] In this embodiment, referring to Figure 5 , Figure 5This is a schematic diagram of the dimming process of the embodiment of the present application in a wide color gamut display scenario. In response to the wide color gamut display scenario, the duration from the time the backlight lamp beads in the partitioned dimming area receive the brightness adjustment command to the actual display brightness (i.e., the final expected brightness) is recorded as the actual backlight adjustment delay T_reg, and the minimum time T_color_mix (i.e., the backlight color mixing time) required for the backlight lamp beads in the partitioned dimming area to mix and evenly mix the lamp beads during the color change process is determined; then, it is detected whether the sum of the preset reserved mixing delay T_delay and the backlight color mixing time T_color_mix (i.e., T_color_mix+T_delay) exceeds the actual backlight adjustment delay T_reg. This can ensure that in the wide color gamut display scenario, a sufficient buffer period is provided for the LED lamp, so that a smooth transition can be achieved when the color changes, effectively preventing the occurrence of color mixing in the wide color space, thereby improving the color quality and stability of the display image.

[0103] It should be noted that the reserved mixing delay T_delay is reserved to ensure that the backlight lamp beads can achieve the time T_color_mix required for color mixing (i.e. backlight color mixing time) during the color change process.

[0104] Step C20: If the total time exceeds the actual backlight adjustment delay, a backlight delay processing operation is performed according to the reserved mixing delay.

[0105] In this embodiment, referring to Figure 5 If the sum of the preset reserved mixing delay and the backlight color mixing time exceeds the actual backlight adjustment delay, the reserved mixing delay T_delay will be reduced to between 0 and (T_reg - T_color_mix) until the expected color uniform display and uniform brightness standards are achieved. In this way, the quality of the entire screen image is improved and the image defects caused by color mixing during the period of image mixing affect the user's viewing experience.

[0106] In a specific embodiment, when operating on a Mini LED display with local dimming capabilities, if a certain zone dimming area receives a brightness adjustment command (for example, a command to change from full brightness to full black), the time from receiving this brightness adjustment command to actually seeing the screen turn black (i.e., T_reg) is measured by monitoring to be 20 milliseconds. To ensure color consistency, it is assumed that 15 milliseconds are required for complete color mixing (i.e., T_color_mix). By setting an appropriate T_delay value to start the color conversion process in advance, the total conversion time does not exceed the above-mentioned measured value, thereby optimizing the viewing experience. If T_delay is set to 3 milliseconds, it means that the color mixing operation will start 18 milliseconds before the next refresh interval. In this way, even if the time required for color mixing reaches or is slightly less than the expected time (e.g., 15 milliseconds), it can be completed within this interval.

[0107] The optimal T_delay setting in this case isn't simply about reducing it, but rather maintaining smooth transitions while meeting the formula's requirements. It typically ranges from 0 to T_reg - T_color_mix, and is adjusted based on specific usage and monitor characteristics to balance image quality and actual performance limitations. This not only avoids color mixing and distortion, but also ensures seamless brightness adjustments, ultimately improving the user's viewing experience and overall display performance.

[0108] Furthermore, in some other feasible embodiments, when the display scene attribute is an energy-saving display scene, the above step S20: performing the dimming display operation mapped with the display scene attribute according to the partitioned dimming area, also includes the following implementation steps D10 to D20.

[0109] Step D10: Determine the dynamic power consumption adjustment factor of the partitioned dimming area in the energy-saving display scenario, and multiply the power demand difference between the preset maximum power demand value and the actual power demand value of the partitioned dimming area by the dynamic power consumption adjustment factor and then superimpose the current maximum display brightness in the partitioned dimming area to obtain the power constraint brightness threshold.

[0110] In this embodiment, referring to Figure 6 , Figure 6This is a schematic diagram of the dimming process of the embodiment of the present application in an energy-saving display scenario. When the display scene attribute is an energy-saving display scene, the dynamic power consumption adjustment factor F_power of the partitioned dimming area in the energy-saving display scene is determined. Specifically, the dynamic power consumption adjustment factor F_power is set according to the energy-saving target of the partitioned dimming area in the energy-saving display scene; next, according to the actual power consumption of the backlight beads in the partitioned dimming area when the image is normally displayed in the energy-saving display scene, the actual power demand value P_act of the partitioned dimming area in the energy-saving display scene is obtained, and the maximum total power demand value P_max of the backlight beads in the partitioned dimming area is determined; then, the power demand difference between the preset maximum power demand value P_max and the actual power demand value P_act is multiplied by the dynamic power consumption adjustment factor F_power and then superimposed on the current maximum display brightness L_max in the partitioned dimming area to obtain the power constraint brightness threshold of L_max+(P_max-P_act)*F_power.

[0111] It's important to note that the dynamic power adjustment factor, F_power, is designed to find the right balance between display brightness and the flatness or uniformity across the display surface. In practical applications, if you want the display to maintain high visual quality while reducing power consumption, you must choose the appropriate F_power. The value of F_power depends on the display content, ambient light intensity, and the system's energy goals. Generally speaking, to maintain a certain level of image quality, the optimal F_power is slightly greater than 1, but not so high that the brightness is unnatural.

[0112] Step D20: After adjusting the zoned energy-saving brightness value of the zoned dimming area to be less than the power constraint brightness threshold, perform energy-saving dimming operation on the zoned dimming area according to the zoned energy-saving brightness value.

[0113] In this embodiment, referring to Figure 6, setting conditions for brightness adjustment and power consumption balance, specifically, detecting whether a preset partition energy-saving brightness value B_new of the partition dimming area is less than a power constraint brightness threshold value L_max+(P_max-P_act)*F_power; if the partition energy-saving brightness value B_new exceeds the power constraint brightness threshold value L_max+(P_max-P_act)*F_power, adjusting the partition energy-saving brightness value B_new=B_new-δB, where B_new on the left side of the equation is the adjusted partition energy-saving brightness value B_new, B_new on the right side of the equation is the preset partition energy-saving brightness value B_new of the partition dimming area, and δB is a preset scheduling adjustment reduction value, which can be customized according to user needs; until the adjusted partition energy-saving brightness value B_new is less than the power constraint brightness threshold value L_max+(P_max-P_act)*F_power, the energy-saving dimming operation is performed on the partition dimming area according to the adjusted partition energy-saving brightness value B_new, thereby reducing energy consumption while ensuring the display effect.

[0114] Furthermore, in another embodiment, performing the energy-saving dimming operation on the zoned dimming area based on the zoned energy-saving brightness value may further include the following implementation steps: setting priorities based on prominent features of the screen in the zoned dimming area, for example, setting the screen center, face detection area, or subtitle area as a high-priority zone of the zoned dimming area, and setting the edge background or solid color area as a low-priority zone of the zoned dimming area; then, fully powering the high-priority zone according to the adjusted zoned energy-saving brightness value B_new. And reducing the brightness of the low-priority zone to 0.8 times the adjusted zoned energy-saving brightness value B_new.

[0115] Furthermore, in another embodiment, after the energy-saving dimming operation is performed on the partitioned dimming area according to the partitioned energy-saving brightness value, the backlight driving circuit power consumption P_new of the partitioned dimming area is measured in real time through the current sensor; if the backlight driving circuit power consumption P_new is greater than the preset expected energy-saving power consumption P_target, then F_power is reduced (for example, reduced by 0.05) to update the power constraint brightness threshold L_max+(P_max-P_act)*F_power, and then the step of adjusting the partitioned energy-saving brightness value B_new of the partitioned dimming area to be less than the power constraint brightness threshold is returned to, until the backlight driving circuit power consumption P_new ≤ the preset expected energy-saving power consumption P_target, thereby achieving that F_power can help dynamically adjust B_new to ensure the best picture quality without exceeding the preset power consumption limit.

[0116] In a specific embodiment, when the display device enters a lower energy consumption stage, it is adjusted according to the set rules. Assume that in an application scenario, a TV receives a sunset video with highlighted details. In order to show the colorful sunset without sacrificing the details of the remaining dark background and reducing overall power consumption, the above method can be used to dynamically set B_new suitable for the display area by adjusting F_power. This not only saves power but also keeps the image from being distorted or too dark. In this way, the display device can improve the overall performance without causing any display problems on the screen, so that the end user can get a good visual experience.

[0117] In summary, the dimming display method set in this application first automatically divides the screen into multiple dimming areas through an algorithm based on image analysis, and independently adjusts each mini-LED in these areas. This not only improves the display system's ability to recognize the fineness of the displayed content, but also can achieve fine dimming according to the specific needs of different blocks on the screen, which is crucial to improving the overall visual experience of the picture. This technology is a solution to the brightness overflow phenomenon during the processing of HDR content. It applies a special image analysis algorithm when identifying specific image details to ensure that the backlight only illuminates those real highlights that require high brightness to enhance the details. This method avoids unnatural brightening of areas that do not require additional light intensity, effectively reduces the problem of brightness penetration, and maintains the depth that the dark areas in the picture should have.

[0118] When displaying scenes with highly dynamic brightness contrast, the system fine-tunes each individual zone to prevent the occurrence of artifacts or false contours around the edges of the screen due to sudden brightness changes. The system precisely sets the brightness for each dimming unit based on the amount of image information it needs to display.

[0119] For images in fast-moving scenes, the dimming display method provided by this application shortens the backlight response time by accelerating feedback to adjust the backlight algorithm. This ensures that the backlight state can be adjusted in time to keep up with the image change rate during dynamic scene playback, greatly reducing or eliminating the problem of smearing caused by visual retention. This improves the instant responsiveness of the display device and enhances the user's experience when viewing rapidly switching images.

[0120] Furthermore, to meet the requirements of wide color gamut content display, the display system incorporates an advanced color coordination algorithm to address various challenges encountered during color mixing. This algorithm adjusts the backlight intensity of each color channel to achieve an ideal color balance, thereby improving the color consistency challenges faced by LED lights when presenting different hues, achieving a true and accurate color display.

[0121] Finally, while taking energy efficiency into consideration, this method provides a sophisticated energy management mechanism that dynamically adjusts backlight power according to different environments and application scenarios. This minimizes energy loss while maintaining a stable backlight output level without affecting the user experience. This effectively suppresses screen flickering or other unexpected behavior caused by over-dimming or improper dimming even in low-power states.

[0122] In addition, to achieve the above-mentioned purpose, the present application further provides a dimming display device, and the dimming display device provided in the present application includes:

[0123] A dimming partition module is used to determine the partition dimming area according to the high dynamic range information of the image to be displayed;

[0124] A dimming operation module is used to determine the display scene attribute of the image to be displayed, and perform a dimming display operation mapped with the display scene attribute according to the partitioned dimming area.

[0125] Each functional module of the dimming display device of the present application implements the steps of the dimming display method of the present application as described above during operation.

[0126] In addition, this application also provides a display device. Figure 7 , Figure 7 Schematic diagram of the structure of the display device involved in the embodiment of the present application. The display device in the embodiment of the present application can specifically be a device for locally running the dimming display method.

[0127] like Figure 7 As shown, the display device of the embodiment of the present application may include: a display panel, a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and optionally the user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a Wi-Fi interface).

[0128] Memory 1005 is provided on the display device body and stores programs that, when executed by processor 1001, implement corresponding operations. Memory 1005 is also used to store parameters used by the display device. Memory 1005 can be high-speed RAM or non-volatile memory, such as disk storage. Memory 1005 can also optionally be a storage device independent of processor 1001.

[0129] Those skilled in the art will understand that Figure 7 The display device structure shown in the figure does not constitute a limitation on the display device, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0130] like Figure 7 As shown, the memory 1005 as a storage medium may include an operating system, a network communication module, a user interface module, and a dimming display program of a display device.

[0131] exist Figure 7 In the display device shown, the processor 1001 can be used to call the dimming display program of the display device stored in the memory 1005 and execute the steps of the dimming display method as described above.

[0132] In addition, to achieve the above-mentioned purpose, the present application also provides a computer-readable storage medium, on which a dimming display program is stored. When the dimming display program is executed by a processor, the steps of any of the above-mentioned dimming display methods are implemented.

[0133] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or system. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or system comprising the element.

[0134] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0135] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium such as ROM / RAM, magnetic disk, or optical disk as mentioned above, and includes a number of instructions for enabling a display device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0136] The above are only preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A dimming display method, characterized in that: The dimming display method includes: Determine the zone dimming area based on the high dynamic range information of the image to be displayed; Determining a display scene attribute of the image to be displayed, and performing a dimming display operation mapped with the display scene attribute according to the partitioned dimming area; When the display scene attribute is a fast-moving display scene, the step of performing the dimming display operation mapped by the display scene attribute according to the zoned dimming areas includes: In response to the dimming display operation of the fast-moving display scene mapping being a smear suppression operation, determining ratio data between a frame frequency and an initial frame interval within the partitioned dimming area; Detecting whether a product threshold of a moving target's moving speed within the zone dimming area and the ratio data does not exceed a preset smear elimination response time; If the product threshold does not exceed the smear elimination response time, in response to the smear suppression operation, the initial frame interval is updated according to a preset frame interval reduction threshold, and the step of determining the ratio data between the frame frequency in the zoned dimming area and the initial frame interval is returned to based on the updated initial frame interval; When the product threshold exceeds the smear elimination response time, the smear suppression operation is terminated.

2. The dimming display method according to claim 1, wherein: There are multiple zoned dimming areas. When the display scene attribute is a high dynamic range display scene, the step of performing the dimming display operation mapped by the display scene attribute according to the zoned dimming areas includes: In response to the high dynamic range display scene, traversing whether the brightness difference between adjacent partitioned dimming areas is greater than a preset brightness penetration threshold; When the brightness difference is greater than the brightness penetration threshold, a brightness transition boundary between adjacent subarea dimming areas is determined, and image edge enhancement processing is performed according to the subarea dimming areas on both sides of the brightness transition boundary.

3. The dimming display method according to claim 1, wherein: When the display scene attribute is a high-contrast display scene, the step of performing the dimming display operation mapped with the display scene attribute according to the zoned dimming areas includes: In response to the high-contrast display scene, a brightness boundary line is determined according to the brightness difference of adjacent pixels in the partitioned dimming area, and edge enhancement filtering processing is performed on the image pixel points on the brightness boundary line.

4. The dimming display method according to claim 3, wherein: The step of determining the brightness boundary line according to the brightness difference of adjacent pixels in the partitioned dimming area includes: Determining the average brightness of pixels in the partitioned dimming area, and obtaining a false contour suppression threshold according to the product data of a preset false contour suppression factor and the average brightness of the pixels; Checking whether the brightness difference between adjacent pixels of each image pixel and adjacent pixels in the partitioned dimming area exceeds the false contour suppression threshold; Until all the image pixel points whose brightness difference between adjacent pixels exceeds the pseudo contour suppression threshold are traversed, each image pixel point whose brightness difference between adjacent pixels exceeds the pseudo contour suppression threshold is marked as a brightness boundary point, and a brightness boundary line is constructed based on all the brightness boundary points.

5. The dimming display method according to claim 1, wherein: When the display scene attribute is a wide color gamut display scene, the step of performing the dimming display operation mapped by the display scene attribute according to the zoned dimming areas includes: In response to the wide color gamut display scene, determine the actual backlight adjustment delay and the backlight color mixing time of the zoned dimming area, and determine whether the sum of the preset reserved mixing delay and the backlight color mixing time exceeds the actual backlight adjustment delay; If the total time exceeds the actual backlight adjustment delay, a backlight delay processing operation is performed according to the reserved mixing delay.

6. The dimming display method according to claim 1, wherein: When the display scene attribute is an energy-saving display scene, the step of performing the dimming display operation mapped by the display scene attribute according to the zoned dimming area includes: Determine a dynamic power consumption adjustment factor for the zoned dimming area in the energy-saving display scenario, and multiply the power demand difference between a preset maximum power demand value and an actual power demand value of the zoned dimming area by the dynamic power consumption adjustment factor and then add the result to the current maximum display brightness in the zoned dimming area to obtain a power constraint brightness threshold; After adjusting the partitioned energy-saving brightness value of the partitioned dimming area to be less than the power constraint brightness threshold, an energy-saving dimming operation is performed on the partitioned dimming area according to the partitioned energy-saving brightness value.

7. A dimming display device, characterized in that: The dimming display device includes: A dimming partition module is used to determine the partition dimming area according to the high dynamic range information of the image to be displayed; a dimming operation module, configured to determine a display scene attribute of the image to be displayed, and perform a dimming display operation mapped to the display scene attribute according to the partitioned dimming areas; The dimming operation module is also used to, when the display scene attribute is a fast-moving display scene, in response to the dimming display operation mapped by the fast-moving display scene being a drag suppression operation, determine the ratio data between the frame frequency and the initial frame interval within the partitioned dimming area; detect whether the product threshold between the movement speed of the moving target within the partitioned dimming area and the ratio data does not exceed the preset drag elimination response time; if the product threshold does not exceed the drag elimination response time, then in response to the drag suppression operation, update the initial frame interval according to the preset frame interval reduction threshold, and return to the step of determining the ratio data between the frame frequency and the initial frame interval within the partitioned dimming area according to the updated initial frame interval; until the product threshold exceeds the drag elimination response time, terminate the drag suppression operation.

8. A display device, characterized in that: The display device includes a memory, a processor, and a dimming display program stored in the memory and executable on the processor. When the processor executes the dimming display program, the steps of the dimming display method according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a dimming display program, and when the dimming display program is executed by the processor, the steps of the dimming display method according to any one of claims 1 to 6 are implemented.

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