CN111276088B - Pixel compensation method - Google Patents
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- CN111276088B CN111276088B CN202010225289.2A CN202010225289A CN111276088B CN 111276088 B CN111276088 B CN 111276088B CN 202010225289 A CN202010225289 A CN 202010225289A CN 111276088 B CN111276088 B CN 111276088B
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- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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Abstract
The present disclosure provides a pixel compensation method. The method comprises the steps of providing a display panel with an under-screen camera opening and constructing a coordinate system, wherein the display panel comprises a plurality of regularly arranged sub-pixels, and the coordinate system is constructed according to the positions of the sub-pixels. And defining the circle center and the radius of each section of circular arc of the opening on the coordinate system constructed by the display panel according to the shape and the position of the opening of the under-screen camera. And determining the distance between the sub-pixel near each section of circular arc and the center of the circular arc. According to the functional relation between the distance from the sub-pixel to the center of the circular arc and the radius of the circular arc, calculating the gray-scale compensation value of each sub-pixel, and carrying out gray-scale compensation on the sub-pixels needing compensation. So as to relieve the problem that the jaggies in the edge area of the opening of the existing under-screen camera display are obvious.
Description
Technical Field
The disclosure relates to the field of display technologies, and in particular, to a pixel compensation method.
Background
Conventionally, large screen displays such as televisions have been man-machine interacted with through remote controls. With the development of image recognition processing technology, people can realize deeper interaction between human and computer by adding a camera on the television, such as remote control of the television by gestures, or develop more functions by combining with an AI technology. In the present day, a display with a narrow frame is more aesthetically pleasing to people, but the space for making the camera on the frame is insufficient, so that development of the under-screen camera technology is very necessary. The under-screen camera occupies a part of the space of the display area on the screen to place the camera, which requires removing a part of pixels and cutting the panel. The common open pore appearance at present has circular hole and water droplet hole two kinds. Unlike a mobile phone, the pixels of a large-sized display are larger, and the pixels are generally rectangular, which can make the edge area of the opening feel a clear saw-tooth feel, and affect the display quality of the display.
Therefore, the problem that the saw tooth feeling of the edge area of the hole of the existing under-screen camera display is obvious needs to be solved.
Disclosure of Invention
The invention provides a pixel compensation method for relieving the technical problem that the jaggy feeling of an opening edge area of an existing under-screen camera display is obvious.
In order to solve the above problems, the technical scheme provided by the present disclosure is as follows:
the embodiment of the disclosure provides a pixel compensation method, which comprises the following steps: step S10, a display panel with an under-screen camera hole is provided, and a coordinate system is built, wherein the display panel comprises a plurality of regularly arranged sub-pixels, and the coordinate system is built according to the positions of the sub-pixels. And step S20, defining the circle center and the radius of each section of circular arc of the under-screen camera opening on the coordinate system constructed by the display panel according to the shape and the position of the under-screen camera opening. And step S30, determining the distance from the sub-pixel near each section of circular arc to the center of the circular arc. And S40, calculating a gray level compensation value of each sub-pixel according to a functional relation between the distance from the sub-pixel to the center of the circular arc and the radius of the circular arc, and performing gray level compensation on the sub-pixel needing compensation.
In the pixel compensation method provided in the embodiment of the present disclosure, in step S10, the coordinate system is constructed with the center point of each sub-pixel as a coordinate point.
In the pixel compensation method provided in the embodiment of the present disclosure, in step S10, the coordinate system is constructed with a center point between two adjacent sub-pixels as a coordinate point.
In the pixel compensation method provided in the embodiment of the present disclosure, in step S20, the shape of the under-screen camera opening is a circular hole, and the coordinates of the first center of the circle of the circular hole in the coordinate system and the first radius R1 and the second radius R2 of the circular hole are determined according to the position and the size of the circular hole.
In the pixel compensation method provided in the embodiment of the present disclosure, in step S30, a first distance d1 from the sub-pixel near the circular hole to the first center is determined.
In the pixel compensation method provided in the embodiment of the present disclosure, in step S40, the relationship between the first distance d1 and the first radius R1 and the second radius R2 of the circular hole is established as a functional relationship,where ra represents the transmittance of each of the sub-pixels.
In the pixel compensation method provided in the embodiment of the present disclosure, in the functional relation, if the first distance d1 is smaller than or equal to the first radius R1, the transmittance ra of the sub-pixel corresponding to the first distance d1 is 0, and the corresponding position is the under-screen camera hole, and the sub-pixel is not set.
In the pixel compensation method provided in the embodiment of the present disclosure, in the functional relation, if the first distance d1 is greater than the first radius R1 and less than the second radius R2, the transmittance of the sub-pixel corresponding to the first distance d1 is greater than 0 and less than 1, and the product of the original gray level of the sub-pixel corresponding to the first distance d1 and the transmittance ra is used as the new gray level of the sub-pixel, and gray level compensation is performed on the sub-pixel according to the calculated new gray level.
In the pixel compensation method provided in the embodiment of the present disclosure, in the functional relation, if the first distance d1 is greater than or equal to the second radius R2, the transmittance ra of the sub-pixel corresponding to the first distance d1 is 1, and the gray scale of the corresponding sub-pixel does not need to be compensated.
In the pixel compensation method provided in the embodiment of the present disclosure, in step S30, the sub-pixel in the rectangular area including the circular hole is selected, and a first distance d1 from the sub-pixel in the rectangular area to the center of the circular hole is determined.
The beneficial effects of the present disclosure are: in the pixel compensation method provided by the disclosure, a relevant model is constructed by determining the shape of an opening of a camera under a screen and using one or a plurality of circular arcs, and a coordinate system is constructed according to pixel arrangement on a display panel, so that the circle center and the radius of each circular arc are defined. The gray scale value of each sub-pixel is calculated according to the distance from the sub-pixel on the display panel to the circle center of the circular arc, the sub-pixel needing to be compensated is compensated, the edge smoothness of the open pore area of the camera under the screen is realized, the problem that the saw tooth sense of the open pore edge area of the display of the camera under the screen is obvious is solved, and the display quality of the display is improved.
Drawings
In order to more clearly illustrate the embodiments or the technical solutions in the prior art, the following description will briefly introduce the drawings that are needed in the embodiments or the description of the prior art, it is obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of a pixel compensation method according to an embodiment of the disclosure;
FIG. 2 is a schematic diagram of a coordinate system constructed on a display panel according to an embodiment of the disclosure;
FIG. 3 is a schematic view of an under-screen camera with circular holes according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of defining a target sub-pixel region according to an embodiment of the disclosure;
FIG. 5 is a schematic diagram of an under-screen camera with water drop holes according to an embodiment of the present disclosure;
fig. 6 is a schematic diagram illustrating a lower view of a display panel according to an embodiment of the disclosure.
Detailed Description
The following description of the embodiments refers to the accompanying drawings, which illustrate specific embodiments in which the disclosure may be practiced. The directional terms mentioned in this disclosure, such as [ up ], [ down ], [ front ], [ back ], [ left ], [ right ], [ inside ], [ outside ], [ side ], etc., are merely referring to the directions of the attached drawings. Accordingly, directional terms are used to illustrate and understand the present disclosure, and are not intended to limit the present disclosure. In the drawings, like elements are designated by like reference numerals.
In one embodiment, a pixel compensation method is provided, as shown in fig. 1, including the following steps:
step S10, a display panel with an under-screen camera hole is provided, and a coordinate system is built, wherein the display panel comprises a plurality of regularly arranged sub-pixels, and the coordinate system is built according to the positions of the sub-pixels.
Specifically, as shown in fig. 2, each sub-pixel 10 on the display panel is rectangular and is arranged on the display panel in a vertically and horizontally ordered manner. However, the subpixel shapes and arrangement rules of the display panel of the present disclosure are not limited thereto.
Further, the coordinate system is constructed with the center point of each rectangular sub-pixel 10 as a coordinate point (indicated as a center point as shown by a black dot in fig. 2).
And step S20, defining the circle center and the radius of each section of circular arc of the opening on the coordinate system constructed by the display panel according to the shape and the position of the opening of the under-screen camera.
Specifically, the shape, the position and the size of the holes needed to be formed in the display panel of the under-screen camera are determined according to actual requirements. And defining the circle center and the radius of each section of circular arc of the opening on the coordinate system constructed by the display panel according to the determined shape, the position and the size of the opening.
Further, as shown in fig. 3, taking the shape of the under-screen camera opening as a circular hole as an example, the coordinates of the first center O1 of the circular hole in the coordinate system and the first radius R1 and the second radius R2 of the circular hole are determined according to the position and the size of the circular hole.
Specifically, a circular area with the first center O1 as a center and the first radius R1 as a radius is the setting area of the under-screen camera opening.
Further, the circular area with the first circle center O1 as the circle center and the second radius R2 as the radius is removed from the setting area of the under-screen camera opening, namely, the edge transition area of the camera opening. Pixels in the edge transition area of the camera opening are incomplete pixels, and partial sub-pixels of the pixels in the edge transition area of the opening are cut due to the fact that the under-screen camera opening is arranged.
And step S30, determining the distance from the sub-pixel near each section of circular arc to the center of the circular arc.
Specifically, according to the coordinates of the sub-pixels near each arc in the coordinate system constructed on the display panel and the coordinates of the first center O1, a first distance d1 between the sub-pixels near each arc and the first center O1 (a first distance d1 between a sub-pixel in the open edge transition region shown in fig. 3 and the first center O1) may be calculated.
Further, in order to reduce the calculation amount, the sub-pixels in a certain area can be selected as target sub-pixels for calculation, and all the sub-pixels near each arc are not calculated. For example, a sub-pixel in the rectangular area 20 including a circle having the first center O1 as a center and the second radius R2 as a radius may be selected as the target sub-pixel, as shown in fig. 4. A first distance from a sub-pixel within rectangular region 20 to a first center of a circle is calculated.
And S40, calculating a gray level compensation value of each sub-pixel according to a functional relation between the distance from the sub-pixel to the center of the circular arc and the radius of the circular arc, and performing gray level compensation on the sub-pixel needing compensation.
Specifically, the relation between the first distance d1 and the first radius R1 and the second radius R2 of the circular hole is established as a functional relation,where ra represents the transmittance of each of the sub-pixels.
Specifically, in the functional relation, if the first distance d1 is smaller than or equal to the first radius R1, the transmittance ra of the sub-pixel corresponding to the first distance d1 is 0, and the corresponding position is the circular hole, and the sub-pixel is not set. That is, the sub-pixels with the first distance d1 smaller than the first radius R1 are located in the under-screen camera opening area, and all the sub-pixel gray scale values of the area are 0 or no filling pixel is needed.
Specifically, in the functional relation, if the first distance d1 is greater than the first radius R1 and less than the second radius R2, the transmittance of the sub-pixel corresponding to the first distance d1 is greater than 0 and less than 1, and the product of the original gray scale of the sub-pixel corresponding to the first distance d1 and the transmittance ra is used as the new gray scale of the sub-pixel, and gray scale compensation is performed on the sub-pixel according to the calculated new gray scale.
Further, the sub-pixels with the first distance d1 greater than the first radius R1 and smaller than the second radius R2 are located in an edge transition area of the under-screen camera opening. The pixels in the area are positioned at the edge of the under-screen camera opening, and part of the sub-pixels are cut, so that obvious saw-tooth phenomenon appears in the area during display.
Further, according to the functional relation, the transmittance of the sub-pixels in the edge transition area of the under-screen camera opening is calculated. Taking the product of the original gray scale of the sub-pixel corresponding to the first distance d1 and the transmittance ra as the new gray scale of the sub-pixel, and performing gray scale compensation on the sub-pixel according to the calculated new gray scale. And reducing the gray scale value of the sub-pixel in the edge transition area of the under-screen camera opening so as to eliminate the sawtooth phenomenon of the edge transition area of the under-screen camera opening.
Specifically, in the functional relation, if the first distance d1 is greater than or equal to the second radius R2, the transmittance ra of the sub-pixel corresponding to the first distance d1 is 1, and the gray scale of the corresponding sub-pixel does not need to be compensated.
Specifically, the sub-pixel with the first distance d1 greater than or equal to the second radius R2 is located in an area outside the under-screen camera hole and the edge transition area of the hole. I.e. the area where the display panel is normally displaying. The transmittance of the sub-pixels in the area is 1, that is, the gray-scale value of the sub-pixels in the area is the original gray-scale value, and compensation is not needed.
In one embodiment, unlike the above-described embodiments, when a coordinate system is constructed on the display panel, a center point between two adjacent sub-pixels is taken as a coordinate point. And the shape of the opening of the under-screen camera is a water drop hole.
Specifically, each sub-pixel on the display panel is rectangular and is arranged on the display panel in a vertically and horizontally ordered manner.
Further, a coordinate system is constructed on the display panel by taking a center point between two adjacent rectangular sub-pixels as a coordinate point.
Specifically, the shape of the under-screen camera opening is a water drop hole, the shape of the water drop hole, namely the opening, comprises a plurality of sections of circular arcs, and the combined shape is similar to a water drop shape.
Specifically, the water drop hole includes an arc at the bottom end and an arc symmetrical to the left and right sides, and the structure of the left half part of the water drop hole shown in fig. 5 includes an arc AB at the left side and a partial arc BC at the bottom end.
Specifically, as shown in fig. 5, according to the position and the size to be set up of the water drop hole, the circle center and the radius of each section of circular arc of the water drop hole are determined on the coordinate system constructed by the display panel. Taking the left circular arc and the bottom partial circular arc of the water drop hole as an example, determining the coordinates of a second circle center O2 of the left circular arc AB of the water drop hole and the third radius R3 and the fourth radius R4 of the left circular arc AB on a coordinate system constructed by the display panel.
Further, the area outside the circular arc with the second center O2 as the center and the fourth radius R4 as the radius is the area where the water drop hole is arranged.
Further, an area where the circular arc with the second circle center O2 as the circle center and the fourth radius R4 as the radius does not intersect with the circular arc with the second circle center O2 as the circle center and the third radius R3 as the radius is an edge transition area of the water drop hole of the camera. The pixels in the edge transition area of the camera water drop hole are incomplete pixels, and partial sub-pixels of the pixels in the edge transition area of the water drop hole are cut due to the arrangement of the camera water drop hole.
Further, according to the coordinates of the sub-pixels near the water drop holes in the coordinate system constructed on the display panel and the coordinates of the second circle center O2, a second distance d2 from the sub-pixels near the water drop holes to the second circle center O2 can be calculated. Of course, since the water drop hole comprises a plurality of sections of circular arcs, only the sub-pixels in the corresponding area of each section of circular arc need to be calculated when the distance between the sub-pixels and the circle center is calculated.
Further, the relationship between the second distance d2 and the third radius R3 and the fourth radius R4 of the water drop hole is established as a functional relationship,where ra represents the transmittance of each of the sub-pixels.
Specifically, in the functional relation, if the second distance d2 is greater than or equal to the fourth radius R4, the transmittance ra of the sub-pixel corresponding to the second distance d2 is 0, and the corresponding position is an opening area of the water drop hole, and the sub-pixel is not set. That is, the sub-pixels with the second distance d2 greater than or equal to the fourth radius R4 are located in the opening area of the drip hole of the under-screen camera, and all the sub-pixels in the area have gray scale values of 0 or do not need to be filled with pixels.
Specifically, in the functional relation, if the second distance d2 is greater than the third radius R3 and less than the fourth radius R4, the transmittance of the sub-pixel corresponding to the second distance d2 is greater than 0 and less than 1, and the product of the original gray scale of the sub-pixel corresponding to the second distance d2 and the transmittance ra is used as the new gray scale of the sub-pixel, and gray scale compensation is performed on the sub-pixel according to the calculated new gray scale.
Further, the sub-pixels with the second distance d2 larger than the third radius R3 and smaller than the fourth radius R4 are located in the opening edge transition area of the water drop hole of the under-screen camera. The pixels in the area are positioned at the edge of the water drop hole of the under-screen camera, and part of the sub-pixels are cut, so that obvious saw-tooth phenomenon appears in the area during display.
Further, according to the functional relation, the transmittance of the sub-pixels in the transition area of the edge of the water drop hole of the under-screen camera is calculated. And taking the product of the original gray scale of the sub-pixel corresponding to the second distance d2 and the transmittance ra as the new gray scale of the sub-pixel, and performing gray scale compensation on the sub-pixel according to the calculated new gray scale. And reducing the gray scale value of the sub-pixel in the transition area of the opening edge of the water drop hole of the under-screen camera so as to eliminate the sawtooth phenomenon of the transition area of the opening edge of the water drop hole of the under-screen camera.
Specifically, in the functional relation, if the second distance d2 is smaller than or equal to the third radius R3, the transmittance ra of the sub-pixel corresponding to the second distance d2 is 1, and the gray scale of the corresponding sub-pixel does not need to be compensated.
Specifically, the sub-pixel with the second distance d2 smaller than or equal to the third radius R3 is located in an area outside the opening of the water drop hole of the under-screen camera and the transition area of the edge of the opening. I.e. the area where the display panel is normally displaying. The transmittance of the sub-pixels in the area is 1, that is, the gray-scale value of the sub-pixels in the area is the original gray-scale value, and gray-scale compensation is not needed.
Further, as shown in fig. 5, coordinates of a third center O3 of the bottom end portion arc BC of the water drop hole and a fifth radius R5 and a sixth radius R6 of the bottom end portion arc are determined on a coordinate system constructed by the display panel. The length of the fifth radius R5 is equal to the length of the third radius R3 of the left arc AB, the length of the sixth radius R6 is equal to the length of the fourth radius R4 of the left arc AB, and the intersection of the third radius R3 and the sixth radius R6 at the junction of the left arc AB and the bottom end portion arc BC is a straight line, or the intersection of the fourth radius R4 and the fifth radius R5 is a straight line (as the intersection B shown in fig. 5).
Further, a third distance d3 from the sub-pixel in the area corresponding to the bottom end partial arc BC to the third center O3 is determined. Wherein the second distance and the third distance are not shown in fig. 5, the second distance is denoted d2 and the third distance is denoted d3 for descriptive purposes.
Further, a functional relation is established between the third distance d3 and the relation between the fifth radius R5 and the sixth radius R6 of the circular arc BC at the bottom end of the water drop hole, a gray-scale compensation value of each sub-pixel is calculated, and gray-scale compensation is performed on the sub-pixel to be compensated. For the specific functional relation and the compensation method, please refer to the description when the shape of the opening of the under-screen camera is a circular hole, and the description is omitted here.
In one embodiment, a display panel 100 is provided, as shown in fig. 6, the display panel 100 includes a display area 30, an aperture area 40 corresponding to an under-screen camera, and an edge transition area 50 between the display area 30 and the aperture area 40. The sub-pixels of the edge transition region 50 are compensated using the pixel compensation method in the above-described embodiment.
As can be seen from the above embodiments:
the invention provides a pixel compensation method, which comprises the steps of providing a display panel with an under-screen camera opening and constructing a coordinate system, wherein the display panel comprises a plurality of regularly arranged sub-pixels, and the coordinate system is constructed according to the positions of the sub-pixels. And defining the circle center and the radius of each arc of the opening on the coordinate system constructed by the display panel according to the shape and the position of the opening of the under-screen camera. And determining the distance between the sub-pixel near each section of circular arc and the center of the circular arc. According to the distance from the sub-pixel to the center of the circular arc and the radius of the circular arc, a functional relation is established, a gray-scale compensation value of the sub-pixel is calculated, gray-scale compensation is carried out on the sub-pixel to be compensated, edge smoothness of an open hole area of an under-screen camera is achieved, the problem that saw tooth feel of the open hole edge area of an existing under-screen camera display is obvious is solved, and the display quality of the display is improved.
In summary, although the present disclosure has been described with reference to the preferred embodiments, the preferred embodiments are not intended to limit the disclosure, and those skilled in the art may make various modifications and alterations without departing from the spirit and scope of the disclosure, so that the scope of the disclosure is defined by the appended claims.
Claims (8)
1. The pixel compensation method of the display panel with the under-screen camera openings is characterized by comprising the following steps of:
step S10, providing a display panel with an under-screen camera hole and constructing a coordinate system, wherein the display panel comprises a plurality of regularly arranged sub-pixels, and the coordinate system is constructed according to the positions of the sub-pixels;
step S20, defining the circle center and the radius of each section of circular arc of the under-screen camera opening on the coordinate system constructed by the display panel according to the shape and the position of the under-screen camera opening;
step S30, determining the distance from the sub-pixel near each section of circular arc to the center of the circular arc; and
step S40, according to the functional relation between the distance from the sub-pixel to the center of the circular arc and the radius of the circular arc, calculating a gray level compensation value of each sub-pixel, and carrying out gray level compensation on the sub-pixels needing compensation;
in step S20, the shape of the under-screen camera opening is a circular hole, and the coordinates of a first center of a circle of the circular hole in the coordinate system, a first radius (R1) of the circular hole and a second radius (R2) larger than the first radius (R1) are determined according to the position and the size of the circular hole;
in step S30, a first distance (d 1) from a target sub-pixel near the circular hole to the first center is determined, the target sub-pixel is the sub-pixel in a rectangular area, and a boundary of a circle defined by the first center and the second radius is inscribed on a boundary of the rectangular area.
2. The pixel compensation method of a display panel with an under-screen camera aperture according to claim 1, wherein in step S10, the coordinate system is constructed with a center point of each of the sub-pixels as a coordinate point.
3. The pixel compensation method of a display panel with an under-screen camera aperture according to claim 1, wherein in step S10, the coordinate system is constructed with a center point between two adjacent sub-pixels as a coordinate point.
4. The method for pixel compensation of a display panel with an under-screen camera aperture according to claim 1, wherein in step S40, the relation between the first distance (d 1) and the first radius (R1) and the second radius (R2) of the circular aperture is established as a functional relation,where ra represents the transmittance of each of the sub-pixels.
5. The method according to claim 4, wherein if the first distance (d 1) is less than or equal to the first radius (R1), the transmittance (ra) of the sub-pixel corresponding to the first distance (d 1) is 0, the corresponding position is the circular hole, and the sub-pixel is not disposed.
6. The method according to claim 4, wherein if the first distance (d 1) is greater than the first radius (R1) and less than the second radius (R2), the transmittance of the sub-pixel corresponding to the first distance (d 1) is greater than 0 and less than 1, and the product of the original gray scale of the sub-pixel corresponding to the first distance (d 1) and the transmittance (ra) is used as the new gray scale of the sub-pixel, and the sub-pixel is subjected to gray scale compensation according to the calculated new gray scale.
7. The method according to claim 4, wherein in the functional relation, if the first distance (d 1) is greater than or equal to the second radius (R2), the transmittance (ra) of the sub-pixel corresponding to the first distance (d 1) is 1, and the gray scale of the corresponding sub-pixel does not need to be compensated.
8. The method of claim 1, wherein in step S30, the target sub-pixel is located within a rectangular area containing the circular aperture.
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| CN112233028B (en) * | 2020-10-15 | 2023-10-31 | 上海通途半导体科技有限公司 | Sub-pixel rendering method and device of under-screen camera |
| CN113903304B (en) * | 2021-09-30 | 2022-12-02 | 昆山国显光电有限公司 | Compensation method and compensation device of display panel and display device |
| CN114661394B (en) * | 2022-03-01 | 2024-06-25 | 网易（杭州）网络有限公司 | Interface display control method and device, storage medium and processor |
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