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

Abstract

The invention discloses a dimming display method and device, display equipment and a computer readable storage medium, and relates to the technical field of display, and the method comprises the steps: determining a partitioned dimming region according to the high dynamic range information of a to-be-displayed image; and determining a display scene attribute of the to-be-displayed image, and executing a dimming display operation mapped by the display scene attribute according to the partitioned dimming area. The display image quality of the display equipment is improved by improving the 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 technical development direction in the display field.

[0003] The commonly used backlight dimming technology divides the micro LED (Light Emitting Diode) lamps arranged in an array into several small areas that can adjust the brightness independently. However, this traditional backlight dimming technology has certain defects. Specifically, in HDR (High-Dynamic Range) display scenes, the lack of accuracy of the local backlight control algorithm can easily cause brightness penetration problems; in high-contrast display scenes, the difference in brightness between adjacent areas can easily cause pseudo contours; in fast-moving display scenes, the asynchrony between the backlight response speed and the picture update rate can easily cause tailing; in wide color gamut display scenes, the complexity of the color mixing mechanism seriously affects the uniformity of the LED light source; in energy-saving display scenes, the lack of accuracy of 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 the present application is to provide a dimming display method, apparatus, display device and computer-readable storage medium, aiming to improve the backlight dimming performance to enhance the display quality of the display device.

[0006] To achieve the above object, the present application provides a dimming display method, the dimming display method comprising: Determine a zone dimming area according to high dynamic range information of an image to be displayed; 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.

[0007] In one embodiment, there are multiple zone dimming areas, and 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 zone dimming areas includes: In response to the high dynamic range display scene, traverse whether the luminance difference between adjacent partition dimming regions is greater than a preset luminance penetration threshold; Until it is traversed that the luminance difference is greater than the luminance penetration threshold, determine the luminance transition boundary between adjacent partition dimming regions, and perform image edge enhancement processing based on the partition dimming regions on both sides of the luminance transition boundary.

[0008] In one embodiment, when the display scene attribute is a high contrast display scene, the step of performing the dimming display operation for mapping the display scene attribute based on the partition dimming region includes: In response to the high contrast display scene, determine the luminance boundary line based on the luminance difference between adjacent pixels in the partition dimming region, and perform edge enhancement filtering processing based on the image pixel points on the luminance boundary line.

[0009] In one embodiment, the step of determining the luminance boundary line based on the luminance difference between adjacent pixels in the partition dimming region includes: Determine the average luminance of the pixels in the partition dimming region, and obtain the pseudo-contour suppression threshold based on the product data of a preset pseudo-contour suppression factor and the average luminance of the pixels; Traverse whether the luminance difference between each image pixel point and its adjacent pixel point in the partition dimming region exceeds the pseudo-contour suppression threshold; Until it is traversed that all the image pixel points with the luminance difference between adjacent pixels exceeding the pseudo-contour suppression threshold are obtained, mark each image pixel point with the luminance difference between adjacent pixels exceeding the pseudo-contour suppression threshold as a luminance boundary point, and construct a luminance boundary line based on all the luminance boundary points.

[0010] In one embodiment, when the display scene attribute is a fast moving display scene, the step of performing the dimming display operation for mapping the display scene attribute based on the partition dimming region includes: In response to the dimming display operation mapped by the fast moving display scene being a ghosting suppression operation, determine the ratio data between the frame frequency and the initial frame interval within the partition dimming region; Detect whether the product threshold between the moving speed of the moving target within the partition dimming region and the ratio data does not exceed a preset ghosting elimination response time; If the product threshold does not exceed the ghosting elimination response time, then in response to the ghosting suppression operation, update the initial frame interval according to a preset frame interval reduction threshold, and return to execute the step of determining the ratio data between the frame frequency and the initial frame interval within the partition dimming region according to the updated initial frame interval; Terminate the ghosting suppression operation until the product threshold exceeds the ghosting elimination response time.

[0011] In one embodiment, when the display scene attribute is a wide color gamut display scene, the step of performing the dimming display operation of mapping the display scene attribute according to the zoned dimming area 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 total time between 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, perform a backlight delay processing operation according to the reserved mixing delay.

[0012] In one embodiment, when the display scene attribute is an energy-saving display scene, the step of performing the dimming display operation of mapping the display scene attribute according to the zoned dimming area includes: Determine the dynamic power consumption adjustment factor of the zoned dimming area in the energy-saving display scene, and multiply the power demand difference between the preset maximum power demand value and the actual power demand value of the zoned dimming area by the dynamic power consumption adjustment factor, and then superimpose the current maximum display brightness in the zoned dimming area to obtain a power constraint brightness threshold; After adjusting the zoned energy-saving brightness value of the zoned dimming area to be less than the power constraint brightness threshold, perform an energy-saving dimming operation on the zoned dimming area according to the zoned energy-saving brightness value.

[0013] In addition, to achieve the above object, the present application further provides a dimming display device, the dimming display device includes: A dimming partition module, configured to determine a zoned dimming area according to the high dynamic range information of the image to be displayed; A dimming operation module, configured to determine the display scene attribute of the image to be displayed, and perform a dimming display operation of mapping the display scene attribute according to the zoned dimming area.

[0014] 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 when running.

[0015] In addition, to achieve the above object, the present application further provides a display device, the display device includes a memory, a processor, and a dimming display program stored on the memory and executable on the processor, and the processor implements the steps of the dimming display method described in any one of the above when executing the dimming display program.

[0016] In addition, to achieve the above object, the present application further 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 one of the above dimming display methods are implemented.

[0017] The dimming display method provided by the present application improves the backlight dimming performance to enhance the display quality of the display device. Specifically, the zoned dimming area can be accurately determined based on the high dynamic range information of the image to be displayed, realizing a reasonable division of the zoned dimming area. Next, after determining the display scene attributes of different zoned dimming areas, a dimming display operation corresponding to the mapped display scene attributes is performed on the zoned dimming area, that is, corresponding dimming display operations are performed according to the display scene attributes of different zoned dimming areas, realizing 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). This not only avoids common problems in traditional backlight dimming technologies such as brightness leakage, false contours, trailing, color unevenness, and screen flicker, but also significantly improves the brightness uniformity, color restoration, contrast, and dynamic range of the display device, thereby comprehensively enhancing the display quality of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present application and used together with the specification to explain the principles of the present application.

[0019] To more clearly illustrate the technical solutions in the embodiments of the present application or in the prior art, the following will briefly introduce the accompanying drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 is a flowchart of the first embodiment of the dimming display method of the present application; Figure 2 is a flowchart of the dimming process in a high dynamic range display scene of the solution of the embodiment of the present application; Figure 3 is a flowchart of the dimming process in a high contrast display scene of the solution of the embodiment of the present application; Figure 4 is a flowchart of the dimming process in a fast moving display scene of the solution of the embodiment of the present application; Figure 5 is a flowchart of the dimming process in a wide color gamut display scene of the solution of the embodiment of the present application; Figure 6 is a flowchart of the dimming process in an energy-saving display scene of the solution of the embodiment of the present application; Figure 7 This is a schematic structural diagram of a display device related to the solution of the embodiment of the present application.

[0021] The realization of the purpose of the present application, functional features and advantages will be further described in conjunction with the embodiments with reference to the accompanying drawings. Specific Embodiments

[0022] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0023] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present application, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0024] In addition, if there are descriptions such as "first", "second", etc. involved 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 quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0025] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present application.

[0026] With the continuous development of display technology, backlight dimming technology, as a key means to improve display image quality and energy efficiency, has become an important technical development direction in the display field.

[0027] The commonly used backlight dimming technology divides the micro LED (Light Emitting Diode) lamps arranged in an array into several small areas that can adjust the brightness independently. However, this traditional backlight dimming technology has certain defects. For example, in HDR (High-Dynamic Range) display scenarios, the insufficient accuracy of the local backlight control algorithm may lead to brightness penetration; when displaying high-contrast images, the difference in brightness between adjacent areas may lead to obvious pseudo-contours; in fast-moving scenes, because the backlight adjustment cannot be synchronized with the high-speed changes of the picture in time, there will be a ghosting phenomenon; when pursuing wide color gamut expression, the complexity of color mixing increases the difficulty of controlling the uniformity of the LED light source, which is prone to uneven color distribution; and when running in power saving mode, if the dynamic dimming method used lacks sufficient accuracy, it may also cause problems such as slight flickering on the display or out-of-control backlight adjustment, which will seriously affect the display quality of the display device.

[0028] 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.

[0029] The above contents are only used to assist in understanding the technical solution of the present application and do not constitute an admission that the above contents are prior art.

[0030] 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.

[0031] The present application provides a dimming display method, referring to Figure 1 As shown, Figure 1 1 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.

[0032] Step S10: determining a zone dimming area according to high dynamic range information of the image to be displayed.

[0033] In this embodiment, the high-dynamic range information of the image to be displayed may at least include the pixel brightness value of each image pixel. Next, the pixel brightness value of each image pixel is mapped to the gray level range [0, 255] to count the number of pixels at each gray level. Furthermore, a luminance histogram with the gray value range as the horizontal axis and the number of pixels as the vertical axis can be generated, and the luminance histogram is smoothed by filtering, which can effectively eliminate noise interference and local fluctuations, making the luminance peak region of the luminance histogram smoother and more stable, so as to more accurately identify the central tendency of the luminance distribution. Next, traverse the smoothed luminance histogram to identify significant peak values of the peaks. If there are at least two significant peak values of the peaks (i.e., significant peak T1 and significant peak T2, and the gray level value corresponding to the significant peak value T1 is less than the gray level corresponding to the significant peak value T2); Next, determine the minimum valley value between the significant peak value T1 and the significant peak value T2 of the significant peak, and then divide the zoned dimming area of the image to be displayed according to the minimum valley value. Specifically, each image pixel with a pixel brightness value in the range [0, the gray level corresponding to the minimum valley value) is divided into a dark area, and each image pixel with a pixel brightness value in the range [the gray level corresponding to the minimum valley value, significant peak T2) is divided into an intermediate transition area, and each image pixel with a pixel brightness value in the range [significant peak T2, 255] is divided into a high-brightness area.

[0034] In another embodiment, if the number of significant peak values of the peaks in the smoothed luminance histogram is less than two, the zoned dimming area of the image to be displayed is divided according to a preset fixed division threshold. Specifically, the preset fixed division threshold is that the dark area corresponds to the interval [0, 50), the intermediate transition area corresponds to the interval [50, 200), and the high-brightness area corresponds to the interval [200, 255), that is, each image pixel with a pixel brightness value in the interval [0, 50) is divided into a dark area, and each image pixel with a pixel brightness value in the interval [50, 200) is divided into an intermediate transition area, and each image pixel with a pixel brightness value in the interval [200, 255) is divided into a high-brightness area, so as to realize a reasonable division of the zoned dimming area.

[0035] Step S20: Determine the display scene attribute of the image to be displayed, and perform a dimming display operation for mapping the display scene attribute according to the zoned dimming area.

[0036] In this embodiment, after determining the display scene attributes of different zoned dimming regions, a dimming display operation corresponding to the display scene attribute mapping is performed on the zoned dimming regions, that is, according to the display scene attributes of different zoned dimming regions, corresponding dimming display operations are performed, 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). This not only avoids common problems in traditional backlight dimming technologies such as brightness leakage, false contours, trailing, color unevenness, and screen micro-flashing, but also significantly improves the brightness uniformity, color reproducibility, contrast, and dynamic range of the display device, thereby comprehensively enhancing the display quality of the display device.

[0037] Further, 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, the number of the zoned dimming regions is multiple. When the display scene attribute is a high dynamic range display scene, the above step S20: performing the dimming display operation of the display scene attribute mapping according to the zoned dimming regions further includes the following implementation steps S201 to S202.

[0038] Step S201: In response to the high dynamic range display scene, traverse whether the brightness difference between adjacent zoned dimming regions is greater than a preset brightness leakage threshold.

[0039] In this embodiment, there are multiple zoned dimming regions divided based on the high dynamic range information of the image to be displayed in the present application. The regional average brightness of each zoned dimming region is calculated; next, based on the regional average brightness corresponding to adjacent zoned dimming regions respectively, the brightness difference between adjacent zoned dimming regions can be accurately calculated; next, traverse whether the brightness difference between adjacent zoned dimming regions is greater than a preset brightness leakage threshold, and then it can be accurately determined whether there is a brightness leakage phenomenon between adjacent zoned dimming regions in a high dynamic range display scene.

[0040] It should be noted that the adjacent zoned dimming regions can be a dark region and a high-brightness region, a dark region and an intermediate transition region, and / or a high-brightness region and an intermediate transition region.

[0041] Step S202: Until it is traversed that the brightness difference is greater than the brightness leakage threshold, determine the brightness transition boundary between adjacent zoned dimming regions, and perform image edge enhancement processing according to the zoned dimming regions on both sides of the brightness transition boundary.

[0042] In this embodiment, until the brightness difference between adjacent partition dimming regions obtained by traversal is greater than a preset brightness penetration threshold, the brightness transition boundary between adjacent partition dimming regions is marked as a high penetration risk area; next, image edge enhancement processing is performed on the partition dimming regions on both sides of the brightness transition boundary marked as a high penetration risk area to avoid the brightness penetration phenomenon between adjacent partition dimming regions in a high dynamic range display scenario, thereby significantly improving the display image quality of the display device in a high dynamic range display scenario.

[0043] In a specific embodiment, referring to Figure 2 , Figure 2 is a schematic diagram of the dimming process of the solution of the embodiment of the present application in a high dynamic range display scenario. Taking the dark region and the highlight region as examples of adjacent partition dimming regions, after determining that the regional average brightness of the highlight region is BA and the regional average brightness of the dark region is BB, the brightness difference B_diff between the highlight region and the dark region can be determined as B_diff = BA - BB to reflect the brightness change degree between adjacent partition dimming regions; next, it is detected whether the brightness difference B_diff exceeds a preset brightness penetration threshold; if the brightness difference B_diff exceeds the preset brightness penetration threshold, the brightness transition boundary between the highlight region and the dark region is marked as a high penetration risk area; next, in response to the brightness transition boundary between the highlight region and the dark region being a high penetration risk area, the regional average brightness BA of the highlight region is reduced to BA' = BA - highlight region attenuation coefficient α * (B_diff - T1), and the regional average brightness BB of the dark region is increased to BB' = BB + dark region attenuation coefficient β * (B_diff - T1), and then the adjusted brightness difference B_diff is recalculated until the brightness difference B_diff ≤ the preset brightness penetration threshold, thereby effectively suppressing the brightness penetration phenomenon such as halos caused by too large a brightness difference between adjacent partition dimming regions, and at the same time avoiding problems such as loss of dark details caused by excessive dimming or overexposure of highlights caused by excessive brightening, thereby improving the display effect of the image to be displayed in a high dynamic range display scenario and significantly improving the display image quality of the display device.

[0044] Further, in some other feasible embodiments, when the display scene attribute is a high contrast display scene, the above step S20: performing a dimming display operation for mapping the display scene attribute according to the partition dimming region further includes the following implementation steps A10.

[0045] Step A10: In response to the high contrast display scene, determining a brightness boundary line according to the brightness difference between adjacent pixels of the partition dimming region, and performing edge enhancement filtering processing on the image pixel points on the brightness boundary line.

[0046] In this embodiment, since the pseudo-contour phenomenon usually appears in high-contrast regions, resulting in a rough and incoherent image. When the zoned dimming region is in a high-contrast display scenario, by analyzing the luminance difference between adjacent pixels within the zoned dimming region, the position of the luminance boundary line can be accurately identified, and edge enhancement filtering is performed on the image pixel points on the luminance boundary line. That is, a filtering program for edge enhancement is executed on all image pixel points marked as the luminance boundary line. In other words, after performing Laplacian edge enhancement on the image pixel points marked as the luminance boundary line, the luminance boundary line after edge enhancement is smoothed through Gaussian filtering operation to avoid the sawtooth effect and enhance the boundary sharpness, thereby improving the image details and ensuring that users can feel a smooth and seamless effect even in a picture area with complex height changes, thus significantly improving the display quality of the display device.

[0047] It should be noted that the algorithm corresponding to Laplacian edge enhancement is L'(x,y)=L(x,y)+r* 2L(x,y), where r = 0.8~1.2; among them, L'(x,y) represents the luminance value of the image pixel point after edge enhancement at its coordinate (x,y); L(x,y) represents the luminance value of the image pixel point marked as the luminance boundary line at its coordinate (x,y), 2L(x,y) represents the calculation result of the second-order derivative of the Laplacian operator on the image pixel point at its coordinate (x,y); r represents the sharpening intensity coefficient, and the value range of this r can be 0.8~1.2, or it can be customized according to the content and requirements of the image display.

[0048] Furthermore, in some feasible embodiments, the above step A10: determining the luminance boundary line according to the luminance difference between adjacent pixels in the zoned dimming region further includes the following implementation steps A101 to A103.

[0049] Step A101: Determine the average pixel luminance of the zoned dimming region, and obtain a pseudo-contour suppression threshold based on the product data of a preset pseudo-contour suppression factor and the average pixel luminance.

[0050] In this embodiment, the average pixel luminance of the zoned dimming region (i.e., the regional average luminance) is determined. Next, a threshold for suppressing the over-contrast effect (i.e., the pseudo-contour suppression threshold) is created based on a preset pseudo-contour suppression factor C_cont and the average pixel luminance L_avg. This pseudo-contour suppression threshold T_cont = C_cont * L_avg, where the pseudo-contour suppression factor C_cont ∈ (0,1), and it can also be customized according to application requirements.

[0051] Step A102: Traverse whether the adjacent pixel brightness difference between each image pixel and its adjacent pixels in the zoned dimming area exceeds the pseudo-contour suppression threshold.

[0052] In this embodiment, when the zoned dimming area is in a high-contrast display scenario, traverse whether the adjacent pixel brightness difference between each image pixel and its adjacent pixels in the zoned dimming area exceeds a preset pseudo-contour suppression threshold, so as to identify the image pixel part with an unwanted brightness step feeling that needs to be eliminated or alleviated by increasing the boundary definition.

[0053] In a specific embodiment, the steps of calculating the adjacent pixel brightness difference between each image pixel and its adjacent pixels include Step 100 to Step 200.

[0054] Step 100: Calculate the brightness gradient magnitude of each image pixel in the zoned dimming area .

[0055] Wherein, represents the brightness gradient magnitude of the th image pixel, represents the horizontal brightness gradient of the th image pixel at its horizontal axis coordinate , represents the vertical brightness gradient of the th image pixel at its vertical axis coordinate .

[0056] Step 200: According to the difference between the brightness gradient magnitude of each image pixel and the brightness gradient magnitude of its adjacent pixel, the adjacent pixel brightness difference L_diff between each image pixel and its adjacent pixel can be accurately obtained.

[0057] Step A103: Until all the image pixels with adjacent pixel brightness differences exceeding the pseudo-contour suppression threshold are traversed, mark each image pixel with an adjacent pixel brightness difference exceeding the pseudo-contour suppression threshold as a brightness boundary point, and construct a brightness boundary line based on all the brightness boundary points.

[0058] In this embodiment, until all the image pixels with adjacent pixel brightness differences exceeding the pseudo-contour suppression threshold are traversed, mark each image pixel with an adjacent pixel brightness difference exceeding the pseudo-contour suppression threshold as a brightness boundary point, thereby realizing the accurate marking of the brightness mutation points in the zoned dimming area; next, construct a continuous brightness boundary line based on the spatial distribution of these discrete brightness boundary points, so as to perform edge enhancement filtering processing on the image pixels on the brightness boundary line, thereby effectively suppressing the pseudo-contour phenomenon of image display, and thus significantly improving the display image quality of the display device.

[0059] In a specific embodiment, referring to Figure 3 , Figure 3 is a schematic diagram of the dimming process of the embodiment solution 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.

[0060] Step 10: For the pixel position P of each image pixel ( , ), calculate the adjacent pixel brightness difference L_diff between it and the image pixels at adjacent positions (i.e., adjacent pixels).

[0061] Step 20: Create a threshold for suppressing the over-contrast effect (i.e., the pseudo-contour suppression threshold) according to the preset pseudo-contour suppression factor C_cont and the pixel average brightness L_avg. The pseudo-contour suppression threshold T_cont = C_cont * L_avg.

[0062] Step 30: If the adjacent pixel brightness difference L_diff is greater than the pseudo-contour suppression threshold T_cont, then mark the pixel position P ( , ) as part of the brightness boundary line.

[0063] Step 40: Optimize the boundary for all pixel positions marked as the brightness boundary line using an edge enhancement filter.

[0064] For example, there is an image with a strong brightness gradient displayed on a Mini-LED (Mini Light Emitting Diode, sub-millimeter light-emitting diode) display. For example, this image is a night scene mode photo, where the bright city skyline is mapped on the reflection of a dark black pool of water. At this time, the Mini-LED display may detect the high brightness changes in the edge areas of the water and the sky, and accurately calibrate these boundary areas through the above steps 10 to 40 and then enhance the clarity of these boundaries, which not only ensures the levels of the sky but also avoids unwanted artificial boundary traces in the dark water area, thereby improving the accuracy and fineness of the Mini-LED backlight management and helping to achieve an image effect closer to the natural visual experience.

[0065] Furthermore, in some other feasible embodiments, when the display scene attribute is a fast-moving display scene, the above step S20: Perform the dimming display operation of the display scene attribute mapping according to the zoned dimming area, further includes the following implementation steps B10 to B40.

[0066] Step B10: In response to the dimming display operation of the fast-moving display scene mapping being a ghosting suppression operation, determine the ratio data between the frame frequency and the initial frame interval within the zoned dimming area.

[0067] In this embodiment, referring to Figure 4 , Figure 4 is a schematic diagram of the dimming process of the solution of the embodiment of the present application in a fast-moving display scene. When the zoned dimming area is in a fast-moving display scene, in response to the dimming display operation of the fast-moving display scene mapping being a ghosting suppression operation, and determine the ratio data between the frame frequency F and the initial frame interval M within the zoned dimming area.

[0068] It should be noted that the initial frame interval M is set to consider the actual perceived impact of different refresh rates on latency, with the aim of reducing the impact of ghosting responses.

[0069] Step B20: Detect whether the product threshold between the moving speed of the moving target within the zoned dimming area and the ratio data does not exceed a preset ghosting elimination response time.

[0070] In this embodiment, referring to Figure 4 , detect whether the moving speed MV*(frame frequency F / initial frame interval M) of the moving target within the zoned dimming area exceeds a preset ghosting elimination response time Δt, and thus can accurately determine whether the Mini-LED display has sufficient response ability to effectively eliminate the ghosting phenomenon in a fast-moving display scene.

[0071] It should be noted that the preset ghosting elimination response time can be understood as the backlight adjustment time for the backlight beads in the zoned dimming area to respond normally in a fast-moving display scene. This backlight adjustment time is a preset value, which can be the median, mode or average of multiple historical backlight normal response times, and the present application does not make any restrictions here.

[0072] Step B30: If the product threshold does not exceed the ghosting elimination response time, update the initial frame interval according to a preset frame interval reduction threshold, and return to execute the step of determining the ratio data between the frame frequency and the initial frame interval within the zoned dimming area according to the updated initial frame interval; Step B40: Terminate the ghosting suppression operation until the product threshold exceeds the ghosting elimination response time.

[0073] In this embodiment, referring to Figure 4, if MV*(F / M) ≤ Δt, then update the initial frame interval 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 increasing the local refresh rate of the zoned dimming area; next, return to execute the step of determining the proportional data between the frame frequency and the initial frame interval within the zoned dimming area according to the updated initial frame interval, so as to realize that by adjusting the proportional data (F / M), the brightness update delay caused by dynamic images can be adjusted more effectively, until MV*(F / M) > Δt, terminate the ghosting suppression operation to ensure clear and ghost-free image output in a fast-moving display scene.

[0074] Further, in another embodiment, after completing the edge enhancement filtering process on the image pixel points on the brightness boundary line, in response to the display scene attribute of the zoned dimming area being a fast-moving display scene, determine the frame frequency and the frame interval of the moving target within the zoned dimming area; detect whether the product of the moving speed MV of the moving target within the zoned dimming area and the proportional data between the frame frequency F and the frame interval M exceeds a preset ghosting elimination response time Δt; if MV*(F / M) ≤ Δt, that is, the moving speed MV of the moving target within the zoned dimming area * (frame frequency F / initial frame interval M) is less than or equal to the ghosting elimination response time, then dynamically adjust the initial frame interval M to reduce the corresponding backlight adjustment delay to suppress the ghosting phenomenon of the screen display. For example, if MV*(F / M) ≤ Δt and when detecting that the moving target (i.e., a fast-moving object) passes through the brightness boundary line after edge enhancement, reduce the initial frame interval M to update the product threshold MV*(F / M) until MV*(F / M) > Δt, thereby realizing the improvement of the local refresh rate and the reduction of the update delay time by dynamically adjusting the ratio of (F / M) to combat the ghosting problem. This can make the high-speed moving part more fluent and will not cause a discontinuous situation in human eye perception.

[0075] Further, in some feasible embodiments, when the display scene attribute is a wide color gamut display scene, the above step S20: perform the dimming display operation mapped according to the display scene attribute according to the zoned dimming area, further includes the following implementation steps C10 to step C20.

[0076] Step C10: 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 judge whether the total time between the preset reserved mixing delay and the backlight color mixing time exceeds the actual backlight adjustment delay.

[0077] In this embodiment, refer to Figure 5 , Figure 5It is a schematic diagram of the dimming process of the embodiment solution of the present application in a wide color gamut display scenario. In response to the wide color gamut display scenario, record the duration from when the backlight beads in the zoned dimming area receive the brightness adjustment instruction to the actual display brightness (i.e., the final expected brightness) as the actual backlight adjustment delay T_reg, and determine the minimum time T_color_mix required for the backlight beads in the zoned dimming area to mix and blend the bead colors during the color change process (i.e., the backlight color mixing and blending time); then detect whether the total time between the preset reserved mixing and blending delay T_delay and the backlight color mixing and blending time T_color_mix (i.e., T_color_mix + T_delay) exceeds the actual backlight adjustment delay T_reg, which can ensure that in the wide color gamut display scenario, enough buffer time is provided for the LED lights, enabling a smooth transition during color changes, effectively preventing color mixing phenomena in the wide color space, and thus improving the color quality and stability of the display screen.

[0078] It should be noted that the reserved mixing and blending delay T_delay is reserved to ensure that the backlight beads can reach the time T_color_mix required for color mixing and blending (i.e., the backlight color mixing and blending time) during the color change process.

[0079] Step C20: If the total time exceeds the actual backlight adjustment delay, perform a backlight delay processing operation according to the reserved mixing and blending delay.

[0080] In this embodiment, referring to Figure 5 , if the total time between the preset reserved mixing and blending delay and the backlight color mixing and blending time exceeds the actual backlight adjustment delay, then reduce the reserved mixing and blending delay T_delay to between 0 and (T_reg - T_color_mix) until the expected color uniform display and uniform brightness standard are achieved, thereby improving the quality of the entire screen image and avoiding affecting the user experience due to image defects caused during color mixing.

[0081] In a specific embodiment, when working on a Mini LED display with local dimming capabilities, if a certain zoned dimming area receives a brightness adjustment command (such as a command to change from full brightness to full black), the time measured through monitoring from receiving this brightness adjustment command to actually seeing the screen turn black (i.e., T_reg) is 20 milliseconds. To ensure color consistency, it is assumed that 15 milliseconds are required for a complete color mixing (i.e., T_color_mix). By setting an appropriate value for T_delay to start the color transformation process in advance, the total transformation 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 starts 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 value (such as 15 milliseconds), it can be completed within this interval.

[0082] For the optimal T_delay setting in this case, it is not simply to reduce it, but to maintain the smoothness of the picture switching as much as possible while meeting the formula requirements. Generally, it may be between 0 and T_reg - T_color_mix, and it is adjusted according to the specific usage situation and the characteristics of the display to balance the picture quality performance and the actual performance limitations. The purpose of doing this is not only to avoid the phenomenon of color mixing and distortion, but also to ensure that the brightness adjustment process is smooth and seamless, ultimately improving the user's viewing experience and the overall performance evaluation of the display.

[0083] 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 of mapping the display scene attribute according to the zoned dimming area further includes the following implementation steps D10 to step D20.

[0084] Step D10: Determine the dynamic power consumption adjustment factor of the zoned dimming area in the energy-saving display scene, and multiply the power demand difference between the preset maximum power demand value and the actual power demand value of the zoned dimming area by the dynamic power consumption adjustment factor, and then superimpose the current maximum display brightness within the zoned dimming area to obtain the power constraint brightness threshold.

[0085] In this embodiment, referring to Figure 6 , Figure 6It is a schematic diagram of the dimming process of the solution of the embodiment of the present application in the energy-saving display scenario. When the display scenario attribute is the energy-saving display scenario, determine the dynamic power consumption adjustment factor F_power of the zoned dimming area in this energy-saving display scenario. Specifically, set the dynamic power consumption adjustment factor F_power according to the energy-saving target of the zoned dimming area in this energy-saving display scenario; Next, based on the actual power consumption of the backlight beads in the zoned dimming area when the normal display screen is displayed in the energy-saving display scenario, obtain the actual power demand value P_act of the zoned dimming area in this energy-saving display scenario, and determine the maximum total power demand value P_max of the backlight beads in this zoned dimming area; Subsequently, multiply the power demand difference between the preset maximum power demand value P_max and the actual power demand value P_act by the dynamic power consumption adjustment factor F_power, and then superimpose the current maximum display brightness L_max in the zoned dimming area to obtain the power constraint brightness threshold as L_max+(P_max - P_act)*F_power.

[0086] It should be noted that the role of the dynamic power consumption adjustment factor F_power is to find a suitable trade-off point between the brightness level of the display and the flatness or consistency between various parts of the display surface. In actual application scenarios, if it is desired that the display can still maintain a high-quality visual effect while reducing power consumption, then an appropriate selection of F_power must be made. The value of F_power depends on the display content, ambient light intensity, and the energy consumption target of the system. Generally speaking, in order to ensure a certain image quality, the optimal F_power will be slightly greater than 1, but it will not make the brightness abrupt.

[0087] 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 an energy-saving dimming operation on the zoned dimming area according to the zoned energy-saving brightness value.

[0088] In this embodiment, refer to Figure 6, set the conditions for brightness adjustment and power consumption balance. Specifically, detect whether the partition energy-saving brightness value B_new of the preset partition dimming area is less than the power constraint brightness threshold L_max + (P_max - P_act) * F_power. If the partition energy-saving brightness value B_new exceeds the power constraint brightness threshold L_max + (P_max - P_act) * F_power, then adjust 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 the 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 L_max + (P_max - P_act) * F_power, perform energy-saving dimming operation on the partition dimming area according to the adjusted partition energy-saving brightness value B_new, so as to reduce energy consumption while ensuring the display effect.

[0089] Furthermore, in another embodiment, performing the energy-saving dimming operation on the partition dimming area according to the partition energy-saving brightness value may further include the following implementation steps: set priorities according to the picture highlighting features of the partition dimming area. For example, set the center of the picture, the face detection area, or the subtitle area, etc. as the high-priority areas of the partition dimming area, and set the edge background or solid color area, etc. as the low-priority areas of the partition dimming area; next, supply full power to the high-priority areas according to the adjusted partition energy-saving brightness value B_new. And reduce the area brightness of the low-priority areas to 0.8 times the adjusted partition energy-saving brightness value B_new.

[0090] Furthermore, in yet another embodiment, after performing the energy-saving dimming operation on the partition dimming area according to the partition energy-saving brightness value, use a current sensor to measure the power consumption P_new of the backlight driving circuit of the partition dimming area in real time; if the power consumption P_new of the backlight driving circuit > the preset expected energy-saving power consumption P_target, then reduce F_power (for example, reduce by 0.05) to update the power constraint brightness threshold L_max + (P_max - P_act) * F_power, and then return to execute the step of adjusting the partition energy-saving brightness value B_new of the partition dimming area to be less than the power constraint brightness threshold until the power consumption P_new of the backlight driving circuit ≤ the preset expected energy-saving power consumption P_target, so as to realize that F_power can help dynamically adjust B_new to ensure the best picture quality without exceeding the preset power consumption limit too much.

[0091] In a specific embodiment, when the display device enters a lower energy consumption phase, it is adjusted according to a set rule. Suppose in an application scenario, a TV receives a sunset video with high - light details. To display a colorful sunset while not sacrificing the details in the remaining dark background and reducing the overall power consumption, the above - mentioned method can be used to dynamically set B_new suitable for the display area by adjusting F_power. This can not only save electric energy but also keep the image from being distorted or too dark. In this way, the display device can improve the overall efficiency without causing any display problems on the screen, enabling the end - user to obtain a good visual experience.

[0092] In summary, the dimming display method set in this application first automatically divides multiple dimming areas on the screen through an algorithm based on image analysis, and independently controls each mini - LED in these areas. This not only improves the display system's cognitive ability for the fineness of the display content, but also enables fine - tuned dimming according to the specific needs of different blocks on the screen, which is crucial for enhancing the overall visual experience of the picture. The solution to the problem of brightness overflow during the processing of HDR content in this technology applies a dedicated image analysis algorithm when identifying specific image details to ensure that the backlight only illuminates those real bright points that require high brightness to enhance details. This method avoids the unnatural brightening of areas that do not require additional light intensity, effectively reduces the problem of brightness penetration, and maintains the proper depth of the dark areas in the picture.

[0093] When encountering a scene with a high dynamic brightness contrast in the display, by finely adjusting each independent partition, it prevents the occurrence of virtual images or so - called pseudo - contour phenomena generated around the picture due to a sharp change in brightness. The system will make an accurate brightness setting for each dimming unit according to the amount of image information it needs to display.

[0094] For images in a fast - dynamic scene, the dimming display method set in this application shortens the backlight response time by accelerating the algorithm for feedback - adjusting the backlight, ensuring that the backlight state can be adjusted in time to keep up with the image change rate during the playback of a dynamic scene, greatly reducing or eliminating the ghosting problem caused by visual persistence. This improves the instant response ability of the display device and enhances the quality of the user's feeling when viewing fast - switching pictures.

[0095] In addition, to meet the requirements of wide - color - gamut content display, the display system incorporates an advanced color - coordination algorithm to handle various problems encountered in the color - mixing process. The color - coordination algorithm adjusts the backlight intensity under each color channel to reach an ideal color balance point, thereby improving the chromaticity consistency problem faced by LED lights when presenting different hues and achieving true and accurate color display.

[0096] Finally, considering the energy consumption efficiency, the method provides a sophisticated energy management mechanism that can dynamically adjust the backlight power according to different environments and application scenarios. While minimizing energy loss without affecting the user experience, it maintains a stable backlight output level, which enables effective suppression of screen flickering or other unexpected behaviors caused by excessive dimming or improper dimming even in a low-power state.

[0097] In addition, to achieve the above object, the present application also provides a dimming display device, and the dimming display device provided by the present application includes: A dimming partition module for determining a partition dimming area according to the high dynamic range information of the image to be displayed; A dimming operation module for determining the display scene attribute of the image to be displayed and performing a dimming display operation mapped by the display scene attribute according to the partition dimming area.

[0098] 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 when running.

[0099] In addition, the present application also provides a display device. Please refer to Figure 7 , Figure 7 which is a schematic structural diagram of the display device involved in the solution of the embodiment of the present application. The display device of the embodiment of the present application may specifically be a device for locally running the dimming display method.

[0100] As Figure 7 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) and an input unit such as a keyboard (Keyboard). Optionally, the user interface 1003 may further 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).

[0101] The memory 1005 is disposed on the main body of the display device. A program is stored on the memory 1005, and when the program is executed by the processor 1001, corresponding operations are realized. The memory 1005 is also used to store parameters for the display device to use. The memory 1005 may be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0102] Those skilled in the art can understand,Figure 7 The display device structure shown does not constitute a limitation on the display device, and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0103] As Figure 7 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 for the display device.

[0104] In Figure 7 the display device shown, the processor 1001 may be used to call the dimming display program stored in the memory 1005 and execute the steps of the dimming display method as described above.

[0105] In addition, to achieve the above object, the present application also provides a computer-readable storage medium, on which a dimming display program is stored, and when the dimming display program is executed by a processor, the steps of the dimming display method described in any one of the above are implemented.

[0106] It should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or system. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or system including that element.

[0107] The serial numbers of the above embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments.

[0108] Through the description of the above embodiments, those skilled in the art can clearly understand that the above embodiment methods can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium as described above (such as ROM / RAM, magnetic disk, optical disc), and includes several instructions for causing a display device (which may be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in various embodiments of the present application.

[0109] The above are only the 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 by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present application.

Claims

1. A dimming display method, characterized in that, The dimming display method includes: Determining a zoned dimming area according to the high dynamic range information of the image to be displayed; Determining the display scene attribute of the image to be displayed, and performing a dimming display operation of mapping the display scene attribute according to the zoned dimming area.

2. The dimming display method according to claim 1, wherein There are multiple numbers of the zoned dimming areas. When the display scene attribute is a high dynamic range display scene, the step of performing the dimming display operation of mapping the display scene attribute according to the zoned dimming area includes: In response to the high dynamic range display scene, traversing whether the brightness difference between adjacent zoned dimming areas is greater than a preset brightness penetration threshold; Until it is traversed that the brightness difference is greater than the brightness penetration threshold, determining the brightness transition boundary between adjacent zoned dimming areas, and performing image edge enhancement processing according to the zoned 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 of mapping the display scene attribute according to the zoned dimming area includes: In response to the high contrast display scene, determining a brightness boundary line according to the brightness difference between adjacent pixels of the zoned dimming area, and performing edge enhancement filtering processing according to 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 between adjacent pixels of the zoned dimming area includes: Determining the average pixel brightness of the zoned dimming area, and obtaining a pseudo contour suppression threshold according to the product data of a preset pseudo contour suppression factor and the average pixel brightness; Traversing whether the brightness difference between each image pixel point and its adjacent pixel point in the zoned dimming area exceeds the pseudo contour suppression threshold; Until it is traversed that all the image pixel points with the brightness difference between adjacent pixels exceeding the pseudo contour suppression threshold are obtained, marking each image pixel point with the brightness difference between adjacent pixels exceeding the pseudo contour suppression threshold as a brightness boundary point, and constructing a brightness boundary line according to all the brightness boundary points.

5. The dimming display method according to claim 1, wherein When the display scene attribute is a fast moving display scene, the step of performing the dimming display operation of mapping the display scene attribute according to the zoned dimming area includes: The dimming display operation mapped in response to the fast moving display scene is a ghosting suppression operation. Determining the ratio data between the frame frequency and the initial frame interval in the zoned dimming area; Detecting whether the product threshold between the moving speed of the moving target in the zoned dimming area and the ratio data does not exceed a preset ghosting elimination response time; If the product threshold does not exceed the ghosting elimination response time, then in response to the ghosting suppression operation, updating the initial frame interval according to a preset frame interval reduction threshold, and returning to execute the step of determining the ratio data between the frame frequency and the initial frame interval in the zoned dimming area according to the updated initial frame interval; Until the product threshold exceeds the ghosting elimination response time, terminating the ghosting suppression operation.

6. 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 by mapping the display scene attribute according to the zoned dimming area 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 total time between 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, perform a backlight delay processing operation according to the reserved mixing delay.

7. The dimming display method according to claim 1, characterized in that When the display scene attribute is an energy-saving display scene, the step of performing the dimming display operation by mapping the display scene attribute according to the zoned dimming area includes: Determine the dynamic power consumption adjustment factor of the zoned dimming area in the energy-saving display scene, and multiply the power demand difference between the preset maximum power demand value and the actual power demand value of the zoned dimming area by the dynamic power consumption adjustment factor, and then superimpose the current maximum display brightness in the zoned dimming area to obtain a power constraint brightness threshold; After adjusting the zoned energy-saving brightness value of the zoned dimming area to be less than the power constraint brightness threshold, perform an energy-saving dimming operation on the zoned dimming area according to the zoned energy-saving brightness value.

8. A dimming display device, characterized in that, The dimming display device includes: A dimming partition module, configured to determine a zoned dimming area according to the high dynamic range information of the image to be displayed; A dimming operation module, configured to determine the display scene attribute of the image to be displayed, and perform a dimming display operation by mapping the display scene attribute according to the zoned dimming area.

9. A display device, characterized in that, The display device includes a memory, a processor, and a dimming display program stored on 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 7 are implemented.

10. A computer-readable storage medium, characterized in that, A computer-readable storage medium stores a dimming display program, and when the dimming display program is executed by a processor, the steps of the dimming display method according to any one of claims 1 to 7 are implemented.

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