CN114333712B - Method and device for determining characteristic value of backlight partition, storage medium and electronic equipment - Google Patents
Method and device for determining characteristic value of backlight partition, storage medium and electronic equipment Download PDFInfo
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Abstract
The disclosure provides a method, a device, a storage medium and an electronic device for determining a characteristic value of a backlight partition, wherein the method comprises the following steps: determining independent pixel areas in the display panel pixel areas corresponding to each backlight partition; determining a shared pixel region located in a first direction of the independent pixel region, wherein the first direction comprises a horizontal direction and/or a vertical direction; the feature values of the backlight partition are determined based on the first feature values and the second feature values. According to the method and the device, the independent pixel areas of the pixel areas in the display panel corresponding to each backlight partition and the shared pixel areas adjacent to the independent pixel areas are determined, the influence of the display content of the adjacent pixel areas on the pixels in the current backlight partition is fully considered in the characteristic value calculation process of the current backlight partition based on the characteristic values of the shared pixel areas, the rationality of the characteristic values of the current backlight partition is improved in a mode of adjusting the characteristic values, and then the display effect of the display device is improved.
Description
Technical Field
The disclosure relates to the technical field of display, and in particular relates to a method and a device for determining a characteristic value of a backlight partition, a storage medium and electronic equipment.
Background
Along with the higher requirement of the user on the display effect of the display device, the aim of improving the display effect is fulfilled by realizing more accurate light source adjustment through a backlight partition system capable of being independently controlled for the display device, especially for large-screen display devices such as televisions, computers and the like. However, when the backlight partitions are actually performed, each backlight partition cannot correspond to an integer row or an integer column of display pixels, at this time, the current control condition of the backlight partition also affects the display effect of the adjacent backlight partition, and if the control of the characteristic values of the backlight partition is unreasonable, the overall look and feel of the display device is affected, and the display effect of the display device is reduced.
Disclosure of Invention
An object of an embodiment of the present disclosure is to provide a method, an apparatus, a storage medium, and an electronic device for determining a feature value of a backlight partition, so as to solve a problem that in the prior art, no control is performed on a non-integer backlight partition.
The embodiment of the disclosure adopts the following technical scheme: a method for determining the characteristic value of a backlight partition comprises the following steps: determining independent pixel areas in the display panel pixel areas corresponding to each backlight partition; determining a shared pixel area located in a first direction of the independent pixel area, wherein the first direction comprises a horizontal direction and/or a vertical direction, and the shared pixel area of the current independent pixel area is at least one part of pixel areas in other independent pixel areas adjacent to the current independent pixel area; determining a first characteristic value of the independent pixel region and a second characteristic value of the shared pixel region; and determining the characteristic value of the backlight partition based on the first characteristic value and the second characteristic value.
In some embodiments, the determining an independent pixel area in the display panel pixel area corresponding to each backlight partition includes: determining a unit pixel value of one backlight partition in a first direction according to the number of pixels of the display panel in the first direction and the number of backlight partitions; determining a first boundary and a second boundary of a pixel area corresponding to a first backlight partition positioned on an Mth column and an Nth row in the display panel according to the unit pixel value, wherein the first boundary and the second boundary are represented by an integer pixel row or an integer pixel column; and determining independent pixel areas in the display panel pixel areas corresponding to the first backlight subareas according to the first boundary and the second boundary.
In some embodiments, the determining, according to the unit pixel value, a first boundary of a pixel area corresponding to a first backlight partition located in an nth row of an mth column in the display panel includes: rounding down the product of the unit pixel value and M, and/or rounding down the product of the unit pixel value and N, to obtain the first boundary; and (2) rounding down after adding 1 to the product of the unit pixel value and M-1, and/or rounding down after adding 1 to the product of the unit pixel value and N-1, so as to obtain the second boundary.
In some embodiments, the determining a shared pixel region located in the independent pixel region first direction includes: expanding X pixel rows or pixel columns along the first direction to a direction far away from the independent pixel area based on the first boundary to form a first shared pixel area; and expanding X pixel rows or pixel columns along the first direction along the second boundary in a direction away from the independent pixel area to form a second shared pixel area.
In some embodiments, the determining the first eigenvalue of the independent pixel area and the second eigenvalue of the shared pixel area comprises: determining the average value of gray values of all pixels in the independent pixel area as a first characteristic value of the independent pixel area; and respectively determining the average value of gray values of all pixels in the first shared area and the second shared area as a second characteristic value of the shared pixel area.
In some embodiments, the determining the feature value of the backlight partition based on the first feature value and the second feature value comprises: determining an influence factor of the shared pixel area according to the first characteristic value and the second characteristic value; and carrying out summation calculation on the product of the second characteristic value and the influence factor and the first characteristic value, and determining a summation value as the characteristic value of the backlight partition.
In some embodiments, the determining the influence factor of the shared pixel region according to the first feature value and the second feature value includes: determining that the influence factor is a first numerical value and the first numerical value is a positive number under the condition that the second characteristic value is larger than the first characteristic value; determining that the influence factor is a second numerical value, which is a negative number, when the second characteristic value is smaller than the first characteristic value; and determining that the influence factor is 0 in the case that the second characteristic value is equal to the first characteristic value.
In some embodiments, further comprising: detecting whether the characteristic value of the backlight partition is larger than a preset threshold value or not; and under the condition that the characteristic value of the backlight partition is larger than a preset threshold value, adjusting the characteristic value of the backlight partition to the preset threshold value.
The embodiment of the disclosure also provides a device for determining the characteristic value of the backlight partition, which comprises: the first determining module is used for determining independent pixel areas in the pixel areas of the display panel corresponding to each backlight partition; a second determining module, configured to determine a shared pixel area located in a first direction of the independent pixel area, where the first direction includes a horizontal direction and/or a vertical direction, and the shared pixel area of the current independent pixel area is at least a part of pixel areas in other independent pixel areas adjacent to the current independent pixel area; a third determining module, configured to determine a first feature value of the independent pixel area and a second feature value of the shared pixel area; and the characteristic value calculation module is used for determining the characteristic value of the backlight partition based on the first characteristic value and the second characteristic value.
The embodiment of the disclosure also provides a storage medium storing a computer program, which is characterized in that the computer program when executed by a processor realizes the steps of the method for determining the characteristic value of the backlight partition.
The embodiment of the disclosure also provides an electronic device, at least comprising a memory and a processor, wherein the memory stores a computer program, and the method is characterized in that the processor realizes the steps of the method for determining the characteristic value of the backlight partition when executing the computer program on the memory.
The beneficial effects of the embodiment of the disclosure are that: the method comprises the steps of determining independent pixel areas of pixel areas in a display panel corresponding to each backlight partition and shared pixel areas adjacent to the independent pixel areas, fully considering the influence of display contents of adjacent pixel areas on pixels in the current backlight partition in the characteristic value calculation process of the current backlight partition based on characteristic values of the shared pixel areas, improving the rationality of the characteristic values of the current backlight partition in a mode of adjusting the characteristic values, and further improving the display effect of display equipment.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present disclosure, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
Fig. 1 is a flowchart of a method for determining a feature value of a backlight partition in a first embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a shared pixel area division of a backlight partition according to a first embodiment of the disclosure;
fig. 3 is a schematic structural diagram of a device for determining a feature value of a backlight partition according to a second embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of an electronic device according to a fourth embodiment of the present disclosure.
Detailed Description
Various aspects and features of the disclosure are described herein with reference to the drawings.
It should be understood that various modifications may be made to the embodiments of the application herein. Therefore, the above description should not be taken as limiting, but merely as exemplification of the embodiments. Other modifications within the scope and spirit of this disclosure will occur to persons of ordinary skill in the art.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and, together with a general description of the disclosure given above and the detailed description of the embodiments given below, serve to explain the principles of the disclosure.
These and other characteristics of the present disclosure will become apparent from the following description of a preferred form of embodiment, given as a non-limiting example, with reference to the accompanying drawings.
It is also to be understood that, although the disclosure has been described with reference to some specific examples, a person skilled in the art will certainly be able to achieve many other equivalent forms of the disclosure, having the characteristics as set forth in the claims and hence all coming within the field of protection defined thereby.
The above and other aspects, features and advantages of the present disclosure will become more apparent in light of the following detailed description when taken in conjunction with the accompanying drawings.
Specific embodiments of the present disclosure will be described hereinafter with reference to the accompanying drawings; however, it is to be understood that the disclosed embodiments are merely examples of the disclosure, which may be embodied in various forms. Well-known and/or repeated functions and constructions are not described in detail to avoid obscuring the disclosure in unnecessary or unnecessary detail. Therefore, specific structural and functional details disclosed herein are not intended to be limiting, but merely serve as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present disclosure in virtually any appropriately detailed structure.
The specification may use the word "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments in accordance with the disclosure.
Along with the higher requirement of the user on the display effect of the display device, the aim of improving the display effect is fulfilled by realizing more accurate light source adjustment through a backlight partition system capable of being independently controlled for the display device, especially for large-screen display devices such as televisions, computers and the like. However, when the backlight partitions are actually performed, each backlight partition cannot correspond to an integer row or an integer column of display pixels in the display panel, at this time, the current control condition of the backlight partition also affects the display effect of the adjacent backlight partition, and if the control of the characteristic value of the backlight partition is unreasonable, the overall look and feel of the display device is affected, and the display effect is reduced.
In order to solve the above-mentioned problems, a first embodiment of the present disclosure provides a method for determining a feature value of a backlight partition, which enables a corresponding backlight partition to have better brightness presentation when being lightened according to the feature value by calculating and adjusting the feature value, so that a pixel area in a display panel corresponding to the backlight partition can achieve better display effect. Fig. 1 shows a flowchart of a method for determining the feature value of a backlight partition, which specifically discloses steps S10 to S40:
S10, determining independent pixel areas in the display panel pixel areas corresponding to each backlight partition.
The backlight subareas are a plurality of independent backlight sources arranged according to actual control requirements, each backlight subarea corresponds to a part of pixel areas in the screen of the display equipment, and when the backlight areas are lightened, the corresponding pixel areas are lightened to display pictures to be displayed. The backlight partitions are controlled by the characteristic values, and display of different brightness is performed based on the input characteristic values, wherein the larger the characteristic value is, the higher the brightness of the backlight source display of the corresponding region is, so that display of different gray scales of the corresponding pixel region is realized. In general, a display screen corresponds to a plurality of backlight partitions, so as to realize finer display control, and as the number of backlight partitions increases, the finer degree of control of the display screen is correspondingly improved.
It should be noted that the size of each backlight partition is the same, and can be adjusted according to the display screen size of the display device and the number of backlight partitions the device is allowed to adjust. In the actual use process, due to different pixel resolutions in the display screen, the pixels of the display screen corresponding to each backlight partition can be subjected to the condition of non-integer pixels at the edges of the backlight partitions, namely, the pixels in the same row or column are simultaneously controlled by two adjacent backlight partitions. In order to avoid the problem of reduced display effect caused by the above situation, in this embodiment, the pixel regions of the display panel corresponding to each backlight partition are determined by dividing the independent pixel region and the shared pixel region, and the characteristic values of the independent pixel regions are finely adjusted based on the characteristic values of the shared pixel region, so that the influence of the content to be presented in the adjacent pixel region on the region is fully considered by the characteristic values of the backlight partition, and further a better display effect is achieved.
Specifically, the independent pixel area is a part of pixel areas in the display panel corresponding to each backlight partition. When determining the independent pixel area of each backlight partition, firstly determining the unit pixel value of a single backlight partition in the first direction according to the number of pixels of the display screen in the first direction and the number of backlight partitions, namely the number of pixels of the display panel corresponding to the single backlight partition in the first direction, wherein the first direction can be the horizontal directionAnd/or vertical direction, corresponding horizontal unit pixel value L can be determined according to actual partition condition pixel_h Vertical unit pixel value L pixel_v I.e. the number of pixels of the display panel to which a single backlight partition corresponds in the horizontal direction as well as in the vertical direction.
After the unit pixel value is determined, a first boundary and a second boundary of a pixel region corresponding to the first backlight partition located in the nth column of the mth row in the display panel may be determined according to the unit pixel value, and when the first direction is a horizontal direction, the first boundary and the second boundary may be left and right boundaries in the horizontal direction, and when the first direction is a vertical direction, the first boundary and the second boundary may be upper and lower boundaries in the vertical direction. When the boundary is actually determined, the first direction may be determined according to the pixel number value of the display panel in the horizontal or vertical direction and the number value of the backlight partitions in the horizontal or vertical direction, if the pixel number value in the horizontal direction may exactly divide the number value of the backlight partitions, but the first direction is the vertical direction if the number value cannot be divided in the vertical direction, the upper and lower boundaries of the first backlight partition in the vertical direction are determined according to the values of the vertical direction and N, and the left and right boundaries of the horizontal partition may be determined directly according to the pixel columns of the integers corresponding to the first backlight partition, and vice versa; if the first direction cannot be divided in the horizontal direction and the vertical direction, the first direction is the horizontal direction and the vertical direction, and four boundaries need to be determined simultaneously when the corresponding boundaries are determined so as to enclose an independent pixel area corresponding to the first backlight area; if the first and second boundaries are divided in the horizontal and vertical directions, the first and second boundaries may be determined directly according to the pixel rows and pixel columns of the integer corresponding to the first backlight partition.
It should be noted that, the first backlight partition stated in this embodiment may be any one of all backlight partitions of the display device, and may be represented according to the number of rows and columns where the first backlight partition is located, and for some special backlight partitions, for example, a partition located at an edge position in all backlight partitions, there is no adjacent backlight partition in at least one of the upper, lower, left and right directions, where a horizontal boundary or a vertical boundary of a corresponding independent pixel area may be directly recorded as a first row of pixels, a last row of pixels, a first column of pixels, or a last column of pixels, which need not be determined in an additional manner.
In order to facilitate the control of the backlight partitions, both the horizontal boundary and the vertical boundary defining the backlight partitions in this embodiment need to be represented by integer pixel rows or integer pixel columns, and at the same time, it should be defined that one pixel can only belong to one backlight partition, that is, the backlight partitions cannot be overlapped. In some embodiments, for the partitioning of non-integer pixels, the determination of the first and second boundaries of the first backlight partition may be performed by: if the first direction is the horizontal direction, the unit pixel value is the horizontal unit pixel value, the product of the horizontal unit pixel value and M is determined, then the obtained product is rounded downwards, the rounded value is the first boundary of the first backlight partition (namely the right boundary of the first backlight partition), then the product of the horizontal unit pixel value and M-1 is determined, in order to avoid the situation that the backlight partitions overlap, the obtained product is rounded downwards after being added with 1, and the rounded value is the second boundary of the first backlight partition (namely the left boundary of the first backlight partition); similarly, if the first direction is the vertical direction, the unit pixel value is a vertical unit pixel value, and at this time, the product of the vertical unit pixel value and N is rounded downward based on the product of the vertical unit pixel value and N to obtain a first boundary of the first backlight partition (i.e. a lower boundary of the first backlight partition), and the product of the vertical unit pixel value and N-1 is rounded downward after adding 1 to obtain a second boundary of the first backlight partition (i.e. an upper boundary of the first backlight partition).
Taking a display screen with a resolution of 3840×2160 and 96×56 backlight partitions as an example, L pixel_h ＝3840/96＝40；L pixel_v The vertical boundaries of each backlight partition are shown in table 1, wherein L1 represents the backlight partition in the first row among all backlight partitions, the corresponding lower boundary thereof is rounded down to 38, the upper boundary thereof is 1, and L2 represents the backlight partition in the second row among all backlight partitions, the corresponding lower boundary thereof is rounded down to 177 at the rear, 39 at the upper boundary, and so on; the horizontal unit pixel value is just an integer, and the boundaries of each backlight partition in the horizontal direction are directly calculated according to the positions of the backlight partitions without performing calculation steps such as rounding down, as shown in table 2, L1 represents the backlight partition located in the first column among all the backlight partitions, the corresponding right boundary is 40, and the left boundary is 1.
TABLE 1
| Direction | Boundary of | Upper side boundary | Lower side boundary | Independent area size |
| L1 | 38.57143 | 1 | 38 | 38 |
| L2 | 77.14286 | 39 | 77 | 39 |
| L3 | 115.7143 | 78 | 115 | 38 |
| L4 | 154.2857 | 116 | 154 | 39 |
| L5 | 192.8571 | 155 | 192 | 38 |
| L6 | 231.4286 | 193 | 231 | 39 |
| L7 | 270 | 232 | 270 | 39 |
| L8 | 308.5714 | 271 | 308 | 38 |
| L9 | 347.1429 | 309 | 347 | 39 |
| L10 | 385.7143 | 348 | 385 | 38 |
| …… | …… | …… | …… | …… |
| L50 | 1928.571 | 1891 | 1928 | 38 |
| L51 | 1967.143 | 1929 | 1967 | 39 |
| L52 | 2005.714 | 1968 | 2005 | 38 |
| L53 | 2044.286 | 2006 | 2044 | 39 |
| L54 | 2082.857 | 2045 | 2082 | 38 |
| L55 | 2121.429 | 2083 | 2121 | 39 |
| L56 | 2160 | 2122 | 2160 | 39 |
TABLE 2
| Direction | Boundary of | Left side boundary | Right side boundary | Independent area size |
| L1 | 40 | 1 | 40 | 40 |
| L2 | 80 | 41 | 80 | 40 |
| L3 | 120 | 81 | 120 | 40 |
| L4 | 160 | 121 | 160 | 40 |
| L5 | 200 | 161 | 200 | 40 |
| L6 | 240 | 201 | 240 | 40 |
| L7 | 280 | 241 | 280 | 40 |
| L8 | 320 | 281 | 320 | 40 |
| L9 | 360 | 321 | 360 | 40 |
| L10 | 400 | 361 | 400 | 40 |
| …… | …… | …… | …… | …… |
| L90 | 3600 | 3561 | 3600 | 40 |
| L91 | 3640 | 3601 | 3640 | 40 |
| L92 | 3680 | 3641 | 3680 | 40 |
| L93 | 3720 | 3681 | 3720 | 40 |
| L94 | 3760 | 3721 | 3760 | 40 |
| L95 | 3800 | 3761 | 3800 | 40 |
| L96 | 3840 | 3801 | 3840 | 40 |
S20, determining the shared pixel area located in the vertical direction and/or the horizontal direction of the independent pixel area.
The shared pixel area corresponding to one backlight partition is an area formed by partial pixel rows or pixel columns which are close to the current backlight partition in the independent pixel areas corresponding to other backlight partitions adjacent to the backlight partition, and the partial area can influence the lighting effect of pixels in the current backlight partition when the partial area is lighted, so that the characteristic value of the independent pixel area corresponding to the current backlight partition can be finely adjusted by combining the characteristic value of the shared pixel area, the influence of the display content of the adjacent pixel area on the pixels in the current backlight partition is fully considered, the rationality of the characteristic value of the current backlight partition is improved, and the aim of improving the display effect of display equipment is fulfilled. Similarly, the pixel row or column near the edge in the current backlight partition is also the shared pixel area corresponding to the other adjacent backlight partition.
It should be appreciated that, in the actual use process, if the backlight partition just realizes the partition of integer pixels, the lighting effect of the backlight in the current partition has less influence on the display effect of the pixels in other adjacent backlight partitions; however, in the case of non-integer partitions, the backlight in the current partition may illuminate pixels in the pixel row or pixel column affected by the neighboring backlight partition, resulting in a certain light leakage phenomenon, and at this time, the partition of the shared pixel area and the calculation of the corresponding eigenvalue are needed to implement the eigenvalue adjustment of the current backlight partition.
When determining the shared pixel region, the first shared pixel region may be formed by extending X pixel rows or pixel columns in a direction away from the independent pixel region based on the first boundary along the first direction, while the second shared pixel region may be formed by extending X pixel rows or pixel columns in a direction away from the independent pixel region based on the second boundary along the first direction. That is, in the case where the horizontal unit pixel value is an integer and the vertical unit pixel value is not an integer, the first direction is the vertical direction, and only the shared pixel region of the current backlight partition in the vertical direction may be calculated when the shared pixel region is determined; if the horizontal unit pixel value is not an integer, and the vertical unit pixel value is an integer, the first direction is the horizontal direction, and only the shared pixel area of the current backlight partition in the horizontal direction can be calculated when the shared pixel area is determined; if the horizontal unit pixel value and the vertical unit pixel value are not integers, and the first direction is the horizontal direction and the vertical direction, then the shared pixel area of the current backlight partition in the vertical direction and the horizontal direction needs to be determined when the shared pixel area is determined. It should be noted that the value of X may have different values when the positions of the shared pixel regions are different, for example, the value of X may be set to P when the shared pixel region is determined along the horizontal direction of the independent pixel region, and the values of X may be set to Q when the shared pixel region is determined along the vertical direction of the independent pixel region, and the values of P and Q may be the same or different.
Specifically, under the condition that the horizontal unit pixel value is not an integer, expanding P pixel columns to the right along the horizontal direction based on a first boundary to form a first horizontal shared pixel area of a first backlight partition, and expanding P pixel columns to the left along the horizontal direction based on a second boundary to form a second horizontal shared pixel area of the first backlight partition; similarly, under the condition that the vertical unit pixel value is not an integer, extending Q pixel rows downwards along the vertical direction based on the first boundary to form a first vertical shared pixel area of the first backlight partition; and expanding the Q pixel rows upwards along the vertical direction based on the second vertical boundary to form a second vertical shared pixel area of the first backlight partition. Fig. 2 shows a schematic diagram of the division of the shared pixel region at a horizontal unit pixel value of 40 and a vertical unit pixel value of 38.57, wherein only two vertical shared pixel regions on the upper and lower sides in the vertical direction are required for a single pixel region.
It should be noted that the value of P may be determined according to the number of pixel columns a included in the independent pixel area, the value of Q may be determined according to the number of pixel columns b included in the independent pixel area, and in general, the value of P may be set between 1% and 10% of the value of a, and the Q values are the same, and the specific settings of the P value and the Q value may be determined according to the actual requirement of the user or the size of the pixel, which is not limited in this embodiment.
S30, determining a first characteristic value of the independent pixel area and a second characteristic value of the shared pixel area.
The first characteristic value of the independent pixel area is denoted as F1, which is represented by the average value of the gray values of all the pixels in the area, where the gray values of all the pixels in the area are determined according to the current frame to be displayed, which is not described in detail in this embodiment. Similarly, the second characteristic value of the shared pixel area is the average value of the gray values of all pixels in the area, but since the number of the shared pixel areas may be multiple, the average value calculation of the gray values needs to be performed for multiple shared pixel areas respectively to obtain the second characteristic value of each shared pixel area, and when the characteristic value of the backlight partition is calculated finally, the multiple second characteristic values are used for collaborative calculation.
Specifically, when the second characteristic value of any one or more of the first horizontal shared pixel region, the second horizontal shared pixel region, the first vertical shared pixel region, and the second vertical shared pixel region is calculated, the second characteristic value F2 of the first vertical shared pixel region and the second characteristic value F3 of the second vertical shared pixel region may be calculated based on the gray values of different a×q pixels in the first vertical shared pixel region and the second vertical shared pixel region, respectively, taking fig. 2 as an example, where a×b pixels are shared among the pixels of the individual pixel regions, and a×q pixels are shared among the first vertical shared pixel region and the second vertical shared pixel region.
In some embodiments, if the independent pixel area further has a first horizontal shared pixel area and a second horizontal shared pixel area, the second feature values corresponding to the respective shared pixel areas are performed according to the same calculation principle, which is not described herein.
S40, determining the characteristic value of the backlight partition based on the first characteristic value and the second characteristic value.
When the characteristic values of the backlight partitions are determined, the characteristic values are determined mainly according to the first characteristic values of the independent pixel areas, and the second characteristic values of the shared pixel areas are utilized for fine adjustment of the first characteristic values, so that a better dimming effect is achieved. Specifically, the shared pixel area is correspondingly provided with an influence factor T to represent the influence degree of the content displayed by the pixels in the shared pixel area on the display effect of the pixels in the independent pixel area, or the influence degree of the content displayed by the pixels in the independent pixel area on the display effect of the pixels in the shared pixel area. When determining the characteristic value of the backlight partition, the first characteristic value F1 corresponding to the independent pixel area may be used as a basis, the influence degree between the shared pixel area and the independent pixel area is determined according to the product of the second characteristic value and the influence factor T, and in the case that there are a plurality of second characteristic values of the shared pixel areas, the value of the influence factor corresponding to each shared pixel area is different, for example, the influence factor corresponding to the second characteristic value F2 of the first vertical shared pixel area is T2, the influence factor corresponding to the second characteristic value F3 of the second vertical shared pixel area is T3, and the value of the characteristic value F of the backlight partition is the sum value obtained by adding the product of F3 and T3 to the product of F2 and T3 and adding F1, i.e., f=f1+f2+f2+f3×t3.
Specifically, for a shared pixel region, different values may exist for the corresponding influencing factors based on the magnitude relation between the second characteristic value and the first characteristic value. For example, when the second characteristic value is greater than the first characteristic value, it is described that the brightness of the independent pixel area is smaller than the brightness of the shared pixel area, and the influence factor is determined to be a first value, and the first value is defined to be a positive number, so that the brightness of the illumination of the backlight partition is improved when the first characteristic value is increased, and the display brightness of the current backlight partition is more approximate to the brightness of the adjacent backlight partition; if the second characteristic value is smaller than the first characteristic value, the brightness of the independent pixel area is larger than the brightness of the shared pixel area, at the moment, the influence factor is determined to be a second numerical value, the second numerical value is limited to be a negative number, the reduction of the first characteristic value is realized, the lighting brightness of the current backlight partition is reduced, and the display brightness of the current backlight partition is ensured to be closer to the brightness of the adjacent backlight partition; if the second characteristic value is the same as the first characteristic value, the influence factor is 0, and the first characteristic value is not required to be additionally adjusted, and the lighting is directly carried out according to the first characteristic value.
In some embodiments, the specific values of the first value and the second value may be preset by a developer, or may be determined according to the number of pixel rows or the number of pixel columns of the shared pixel area set by the current user, which is extended compared with the boundary of the independent pixel area. For example, as shown in fig. 2, the pixel columns of the first vertical sharing pixel area and the second vertical sharing pixel area are both a, the pixel columns of the first vertical sharing pixel area and the second vertical sharing pixel area are the same as the pixel columns of the independent pixel areas, and the pixel columns of the first vertical sharing pixel area and the second vertical sharing pixel area are both Q, and then the influence factor T2 corresponding to the first vertical sharing pixel area and the influence factor T3 corresponding to the second vertical sharing pixel area can be determined based on the Q and b values, for example, when F2< F1, the sharing factor t2= -Q/b, when F2 > F1, the sharing factor t2=q/b, and when f2=f1, the sharing factor t2=0; when f3< F1, the sharing factor t2= -Q/b, when F3 > F1, the sharing factor t2=q/b, and when f3=f1, the sharing factor t2=0. It should be noted that, in this embodiment, as shown in fig. 2, the Q value corresponding to the first vertical shared pixel area and the Q value corresponding to the second vertical shared pixel area may be the same or different in actual use, and may be calculated according to the actual Q value in determining the influence factor; similarly, if the backlight partition has a first horizontal sharing pixel area and a second horizontal sharing pixel area, the influence factors corresponding to the first horizontal sharing pixel area and the second horizontal sharing pixel area are calculated according to the ratio of P to a.
In the practical use process, the luminance of the backlight partition can emit light is limited, namely the characteristic value input into the backlight partition has an upper limit, namely a preset threshold value, after the characteristic value F of the backlight partition is determined according to the first characteristic value, the second characteristic value and the influence factor of the shared pixel area, whether the value F is larger than the preset threshold value can be detected, if the value F is larger than the preset threshold value, the value F is adjusted to the preset threshold value, the backlight partition emits light according to the maximum luminance, and if the value F is smaller than or equal to the preset threshold value, the backlight partition is controlled to emit light according to the value F.
According to the embodiment, the influence of the display content of the adjacent pixel areas on the pixels in the current backlight partition is fully considered in the characteristic value calculation process of the current backlight partition based on the characteristic values of the shared pixel areas by determining the independent pixel areas of the pixel areas in the display panel corresponding to each backlight partition and the shared pixel areas adjacent to the independent pixel areas, and the rationality of the characteristic values of the current backlight partition is improved in a mode of adjusting the characteristic values, so that the display effect of the display device is improved.
The second embodiment of the present disclosure discloses a device for determining a characteristic value of a backlight partition, which can be installed in any display device having a backlight partition system, and is used for determining the characteristic value of each backlight partition, so as to achieve improvement of the display effect of the display device.
Fig. 3 shows a schematic structural diagram of a feature value determining apparatus in this embodiment, which mainly includes a first determining module 10, a second determining module 20, a third determining module 30, and a feature value calculating module that are sequentially coupled, where the first determining module 10 is configured to determine an independent pixel area in a display panel pixel area corresponding to each backlight partition; the second determining module 20 is configured to determine a shared pixel area located in a first direction of the independent pixel area, where the first direction includes a horizontal direction and/or a vertical direction, and the shared pixel area of the current independent pixel area is at least a part of pixel areas in other independent pixel areas adjacent to the current independent pixel area; the third determining module 30 is configured to determine a first feature value of an independent pixel area and a second feature value of a shared pixel area; the feature value calculation module 40 is configured to determine a feature value of the backlight partition based on the first feature value and the second feature value.
In some embodiments, the first determining module 10 is specifically configured to determine a unit pixel value of one backlight partition in the first direction according to the number of pixels of the display panel in the first direction and the number of backlight partitions; determining a first boundary and a second boundary of a pixel area corresponding to a first backlight partition of an Mth column and an Nth row in a display panel according to a unit pixel value, wherein the first boundary and the second boundary are represented by an integer pixel row or an integer pixel column; and determining independent pixel areas in the pixel areas of the display panel corresponding to the first backlight partition according to the first boundary and the second boundary.
In some embodiments, the first determining module 10 is further configured to round down the product of the unit pixel value and M, and/or round down the product of the unit pixel value and N, to obtain a first boundary; and (2) adding 1 to the product of the unit pixel value and M-1 and then rounding downwards, and/or adding 1 to the product of the unit pixel value and N-1 and then rounding downwards to obtain a second boundary.
In some embodiments, the second determining module 20 is specifically configured to extend X pixel rows or pixel columns along the first direction away from the independent pixel area based on the first boundary to form a first shared pixel area; the second shared pixel region is formed based on the second boundary extending X pixel rows or pixel columns in a direction away from the individual pixel regions along the first direction.
In some embodiments, the third determining module 30 is specifically configured to determine, as the first characteristic value of the independent pixel area, a mean value of gray values of all pixels in the independent pixel area; and respectively determining the average value of the gray values of all pixels in the first sharing area and the second sharing area as a second characteristic value of the sharing pixel area.
In some embodiments, the feature value calculating module 40 is specifically configured to determine an impact factor of the shared pixel area according to the first feature value and the second feature value; and carrying out summation calculation on the product of the second characteristic value and the influence factor and the first characteristic value, and determining the summation value as the characteristic value of the backlight partition.
In some embodiments, the feature value calculating module 40 is specifically configured to determine that the influence factor is a first value, where the first value is a positive number, if the second feature value is greater than the first feature value; under the condition that the second characteristic value is smaller than the first characteristic value, determining that the influence factor is a second numerical value, wherein the second numerical value is a negative number; in the case where the second characteristic value is equal to the first characteristic value, the influence factor is determined to be 0.
In some embodiments, the feature value calculating module 40 is further configured to detect whether the feature value of the backlight partition is greater than a preset threshold; and under the condition that the characteristic value of the backlight partition is larger than a preset threshold value, adjusting the characteristic value of the backlight partition to the preset threshold value.
According to the embodiment, the influence of the display content of the adjacent pixel areas on the pixels in the current backlight partition is fully considered in the characteristic value calculation process of the current backlight partition based on the characteristic values of the shared pixel areas by determining the independent pixel areas of the pixel areas in the display panel corresponding to each backlight partition and the shared pixel areas adjacent to the independent pixel areas, and the rationality of the characteristic values of the current backlight partition is improved in a mode of adjusting the characteristic values, so that the display effect of the display device is improved.
A third embodiment of the present disclosure provides a storage medium, which is installable in any display device having a backlight partition system, and which is specifically a computer readable medium storing a computer program which, when executed by a processor, implements the method provided by any embodiment of the present disclosure, including steps S31 to S34 as follows:
s31, determining independent pixel areas in the display panel pixel areas corresponding to each backlight partition;
s32, determining a shared pixel area positioned in a first direction of the independent pixel area, wherein the first direction comprises a horizontal direction and/or a vertical direction, and the shared pixel area of the current independent pixel area is at least one part of pixel areas in other independent pixel areas adjacent to the current independent pixel area;
s33, determining a first characteristic value of an independent pixel area and a second characteristic value of a shared pixel area;
s34, determining the characteristic value of the backlight partition based on the first characteristic value and the second characteristic value.
The computer program is executed by the processor to determine an independent pixel area in the display panel pixel area corresponding to each backlight partition, and the processor specifically executes the following steps: determining a unit pixel value of one backlight partition in the first direction according to the number of pixels of the display panel in the first direction and the number of backlight partitions; determining a first boundary and a second boundary of a pixel area corresponding to a first backlight partition of an Mth column and an Nth row in a display panel according to a unit pixel value, wherein the first boundary and the second boundary are represented by an integer pixel row or an integer pixel column; and determining independent pixel areas in the pixel areas of the display panel corresponding to the first backlight partition according to the first boundary and the second boundary.
When the computer program is executed by the processor and determines the first boundary of the pixel area corresponding to the first backlight partition located in the mth column and the nth row of the display panel according to the unit pixel value, the processor specifically executes the following steps: rounding down the product of the unit pixel value and M and/or rounding down the product of the unit pixel value and N to obtain a first boundary; and (2) adding 1 to the product of the unit pixel value and M-1 and then rounding downwards, and/or adding 1 to the product of the unit pixel value and N-1 and then rounding downwards to obtain a second boundary.
The computer program is executed by the processor to determine the shared pixel area located in the first direction of the independent pixel area, and the processor specifically executes the following steps: expanding X pixel rows or pixel columns along a first direction along a first boundary to form a first shared pixel region, wherein the X pixel rows or pixel columns are far away from the independent pixel region; the second shared pixel region is formed based on the second boundary extending X pixel rows or pixel columns in a direction away from the individual pixel regions along the first direction.
The computer program is executed by the processor to determine a first characteristic value of the independent pixel region and a second characteristic value of the shared pixel region, and the processor specifically executes the following steps: determining the average value of gray values of all pixels in the independent pixel area as a first characteristic value of the independent pixel area; and respectively determining the average value of the gray values of all pixels in the first sharing area and the second sharing area as a second characteristic value of the sharing pixel area.
The computer program is executed by the processor to determine the characteristic value of the backlight partition based on the first characteristic value and the second characteristic value, and the specific steps are executed by the processor as follows: determining an influence factor of the shared pixel area according to the first characteristic value and the second characteristic value; and carrying out summation calculation on the product of the second characteristic value and the influence factor and the first characteristic value, and determining the summation value as the characteristic value of the backlight partition.
The computer program is executed by the processor to determine an influence factor of the shared pixel region according to the first characteristic value and the second characteristic value, and the processor specifically executes the following steps: under the condition that the second characteristic value is larger than the first characteristic value, determining an influence factor as a first numerical value, wherein the first numerical value is a positive number; under the condition that the second characteristic value is smaller than the first characteristic value, determining that the influence factor is a second numerical value, wherein the second numerical value is a negative number; in the case where the second characteristic value is equal to the first characteristic value, the influence factor is determined to be 0.
The computer program is further executed by the processor to: detecting whether the characteristic value of the backlight partition is larger than a preset threshold value; and under the condition that the characteristic value of the backlight partition is larger than a preset threshold value, adjusting the characteristic value of the backlight partition to the preset threshold value.
According to the embodiment, the influence of the display content of the adjacent pixel areas on the pixels in the current backlight partition is fully considered in the characteristic value calculation process of the current backlight partition based on the characteristic values of the shared pixel areas by determining the independent pixel areas of the pixel areas in the display panel corresponding to each backlight partition and the shared pixel areas adjacent to the independent pixel areas, and the rationality of the characteristic values of the current backlight partition is improved in a mode of adjusting the characteristic values, so that the display effect of the display device is improved.
The fourth embodiment of the present disclosure provides an electronic device, which may be any display device having a backlight partition system, and a schematic structural diagram of the electronic device is shown in fig. 4, and the electronic device at least includes a memory 100 and a processor 200, where the memory 100 stores a computer program, and the processor 200 implements the method provided by any embodiment of the present disclosure when executing the computer program on the memory 100. Exemplary, the electronic device computer program steps are as follows S41 to S44:
s41, determining independent pixel areas in the display panel pixel areas corresponding to each backlight partition;
s42, determining a shared pixel area positioned in a first direction of the independent pixel area, wherein the first direction comprises a horizontal direction and/or a vertical direction, and the shared pixel area of the current independent pixel area is at least one part of pixel areas in other independent pixel areas adjacent to the current independent pixel area;
S43, determining a first characteristic value of an independent pixel area and a second characteristic value of a shared pixel area;
s44, determining the characteristic value of the backlight partition based on the first characteristic value and the second characteristic value.
The processor, when executing the independent pixel areas in the display panel pixel areas corresponding to each backlight partition stored on the memory, specifically executes the following computer program: determining a unit pixel value of one backlight partition in the first direction according to the number of pixels of the display panel in the first direction and the number of backlight partitions; determining a first boundary and a second boundary of a pixel area corresponding to a first backlight partition of an Mth column and an Nth row in a display panel according to a unit pixel value, wherein the first boundary and the second boundary are represented by an integer pixel row or an integer pixel column; and determining independent pixel areas in the pixel areas of the display panel corresponding to the first backlight partition according to the first boundary and the second boundary.
When the processor determines the first boundary of the pixel area corresponding to the first backlight partition located in the mth column and the nth row of the display panel according to the unit pixel value, the processor specifically executes the following computer program: rounding down the product of the unit pixel value and M and/or rounding down the product of the unit pixel value and N to obtain a first boundary; and (2) adding 1 to the product of the unit pixel value and M-1 and then rounding downwards, and/or adding 1 to the product of the unit pixel value and N-1 and then rounding downwards to obtain a second boundary.
The processor, when executing the shared pixel area stored on the memory that is determined to be located in the first direction of the independent pixel area, specifically executes the following computer program: expanding X pixel rows or pixel columns along a first direction along a first boundary to form a first shared pixel region, wherein the X pixel rows or pixel columns are far away from the independent pixel region; the second shared pixel region is formed based on the second boundary extending X pixel rows or pixel columns in a direction away from the individual pixel regions along the first direction.
The processor, when executing the first characteristic value of the determined independent pixel area and the second characteristic value of the shared pixel area stored on the memory, specifically executes the following computer program: determining the average value of gray values of all pixels in the independent pixel area as a first characteristic value of the independent pixel area; and respectively determining the average value of the gray values of all pixels in the first sharing area and the second sharing area as a second characteristic value of the sharing pixel area.
The processor, when executing the first and second characteristic values stored on the memory to determine the characteristic values of the backlight partition, specifically executes the following computer program: determining an influence factor of the shared pixel area according to the first characteristic value and the second characteristic value; and carrying out summation calculation on the product of the second characteristic value and the influence factor and the first characteristic value, and determining the summation value as the characteristic value of the backlight partition.
The processor, when executing the influence factor stored on the memory for determining the shared pixel area based on the first characteristic value and the second characteristic value, specifically executes the following computer program: under the condition that the second characteristic value is larger than the first characteristic value, determining an influence factor as a first numerical value, wherein the first numerical value is a positive number; under the condition that the second characteristic value is smaller than the first characteristic value, determining that the influence factor is a second numerical value, wherein the second numerical value is a negative number; in the case where the second characteristic value is equal to the first characteristic value, the influence factor is determined to be 0.
The processor also executes the following computer program stored on the memory: detecting whether the characteristic value of the backlight partition is larger than a preset threshold value; and under the condition that the characteristic value of the backlight partition is larger than a preset threshold value, adjusting the characteristic value of the backlight partition to the preset threshold value.
According to the embodiment, the influence of the display content of the adjacent pixel areas on the pixels in the current backlight partition is fully considered in the characteristic value calculation process of the current backlight partition based on the characteristic values of the shared pixel areas by determining the independent pixel areas of the pixel areas in the display panel corresponding to each backlight partition and the shared pixel areas adjacent to the independent pixel areas, and the rationality of the characteristic values of the current backlight partition is improved in a mode of adjusting the characteristic values, so that the display effect of the display device is improved.
While various embodiments of the present disclosure have been described in detail, the present disclosure is not limited to these specific embodiments, and various modifications and embodiments can be made by those skilled in the art on the basis of the concepts of the present disclosure, and these modifications and modifications should be within the scope of the present disclosure as claimed.
Claims (10)
1. A method for determining a characteristic value of a backlight partition, comprising:
determining independent pixel areas in the display panel pixel areas corresponding to each backlight partition;
determining a shared pixel area located in a first direction of the independent pixel area, wherein the first direction comprises a horizontal direction and/or a vertical direction, and the shared pixel area of the current independent pixel area is at least one part of pixel areas in other independent pixel areas adjacent to the current independent pixel area;
determining a first characteristic value of the independent pixel region and a second characteristic value of the shared pixel region;
determining a feature value of the backlight partition based on the first feature value and the second feature value;
wherein the determining an independent pixel area in the display panel pixel areas corresponding to each backlight partition includes:
determining a unit pixel value of one backlight partition in a first direction according to the number of pixels of the display panel in the first direction and the number of backlight partitions;
Determining a first boundary and a second boundary of a pixel area corresponding to a first backlight partition positioned on an Mth column and an Nth row in the display panel according to the unit pixel value, wherein the first boundary and the second boundary are represented by an integer pixel row or an integer pixel column;
and determining independent pixel areas in the display panel pixel areas corresponding to the first backlight subareas according to the first boundary and the second boundary.
2. The method according to claim 1, wherein determining a first boundary of a pixel region corresponding to a first backlight partition located in an mth column and an nth row of the display panel according to the unit pixel value includes:
rounding down the product of the unit pixel value and M, and/or rounding down the product of the unit pixel value and N, to obtain the first boundary;
and (2) rounding down after adding 1 to the product of the unit pixel value and M-1, and/or rounding down after adding 1 to the product of the unit pixel value and N-1, so as to obtain the second boundary.
3. The feature value determining method according to claim 2, wherein the determining a shared pixel region located in the first direction of the independent pixel region includes:
Expanding X pixel rows or pixel columns along the first direction to a direction far away from the independent pixel area based on the first boundary to form a first shared pixel area;
and expanding X pixel rows or pixel columns along the first direction along the second boundary in a direction away from the independent pixel area to form a second shared pixel area.
4. The feature value determination method according to claim 3, wherein the determining the first feature value of the independent pixel region and the second feature value of the shared pixel region includes:
determining the average value of gray values of all pixels in the independent pixel area as a first characteristic value of the independent pixel area;
and respectively determining the average value of gray values of all pixels in the first shared pixel area and the second shared pixel area as a second characteristic value of the shared pixel area.
5. The feature value determination method according to claim 4, wherein the determining the feature value of the backlight partition based on the first feature value and the second feature value includes:
determining an influence factor of the shared pixel area according to the first characteristic value and the second characteristic value;
And carrying out summation calculation on the product of the second characteristic value and the influence factor and the first characteristic value, and determining a summation value as the characteristic value of the backlight partition.
6. The feature value determination method according to claim 5, wherein the determining the influence factor of the shared pixel region from the first feature value and the second feature value includes:
determining that the influence factor is a first numerical value and the first numerical value is a positive number under the condition that the second characteristic value is larger than the first characteristic value;
determining that the influence factor is a second numerical value, which is a negative number, when the second characteristic value is smaller than the first characteristic value;
and determining that the influence factor is 0 in the case that the second characteristic value is equal to the first characteristic value.
7. The characteristic value determination method according to any one of claims 1 to 6, characterized by further comprising:
detecting whether the characteristic value of the backlight partition is larger than a preset threshold value or not;
and under the condition that the characteristic value of the backlight partition is larger than a preset threshold value, adjusting the characteristic value of the backlight partition to the preset threshold value.
8. A characteristic value determining apparatus of a backlight partition, comprising:
The first determining module is used for determining independent pixel areas in the pixel areas of the display panel corresponding to each backlight partition;
a second determining module, configured to determine a shared pixel area located in a first direction of the independent pixel area, where the first direction includes a horizontal direction and/or a vertical direction, and the shared pixel area of the current independent pixel area is at least a part of pixel areas in other independent pixel areas adjacent to the current independent pixel area;
a third determining module, configured to determine a first feature value of the independent pixel area and a second feature value of the shared pixel area;
a feature value calculation module, configured to determine a feature value of the backlight partition based on the first feature value and the second feature value;
the first determining module is specifically configured to determine a unit pixel value of a backlight partition in a first direction according to the number of pixels of the display panel in the first direction and the number of backlight partitions; determining a first boundary and a second boundary of a pixel area corresponding to a first backlight partition of an Mth column and an Nth row in a display panel according to a unit pixel value, wherein the first boundary and the second boundary are represented by an integer pixel row or an integer pixel column; and determining independent pixel areas in the pixel areas of the display panel corresponding to the first backlight partition according to the first boundary and the second boundary.
9. A storage medium storing a computer program, wherein the computer program when executed by a processor implements the steps of the method for determining the feature value of a backlight partition according to any one of claims 1 to 7.
10. An electronic device comprising at least a memory, a processor, the memory having stored thereon a computer program, characterized in that the processor, when executing the computer program on the memory, implements the steps of the method for determining the characteristic value of a backlight partition according to any one of claims 1 to 7.
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