CN110858470A - Display control method and device of OLED screen and terminal equipment - Google Patents
Display control method and device of OLED screen and terminal equipment Download PDFInfo
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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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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Abstract
The embodiment of the invention discloses a display control method and device of an OLED screen and terminal equipment, relates to the technical field of electronics, and aims to reduce the ghost phenomenon of the OLED screen and improve the visual experience of a user. The method comprises the following steps: acquiring at least one display picture of an OLED screen, and calculating a brightness mapping array of a gray scale picture corresponding to the display picture, wherein the brightness mapping array comprises a brightness value corresponding to each pixel point; calculating an equivalent gray scale picture of the display picture after brightness attenuation according to the brightness mapping array and the accumulated use time of the display picture; generating a brightness compensation coefficient array according to the equivalent gray scale picture corresponding to the at least one display picture; and performing brightness compensation on the current display picture according to the brightness compensation coefficient number, wherein the current display picture belongs to the at least one display picture.
Description
Technical Field
The embodiment of the invention relates to the technical field of electronics, in particular to a display control method and device of an OLED screen and terminal equipment.
Background
The brightness decay of an OLED (organic light emitting diode) panel is an inherent characteristic of the current OLED products. The pixel points of the OLED screen adopt organic light-emitting materials to emit light, and the performance of the materials is reduced after the materials work for a long time, so that the brightness of the pixel points is reduced. The adjacent pixels have different brightness attenuation degrees due to different long-time display contents. Therefore, when the same content or similar content is displayed, the problem of residual image phenomenon in vision is caused due to the difference of the pixel brightness of different areas in the picture, and the boundary, namely the residual image phenomenon, is generated in vision.
Disclosure of Invention
The embodiment of the invention provides a display control method and device of an OLED screen and terminal equipment, which can reduce the ghost phenomenon of the OLED screen and improve the visual experience of a user.
In a first aspect, a display control method for an OLED screen is provided, and includes: acquiring at least one display picture of an OLED screen, and calculating a brightness mapping array of a gray scale picture corresponding to the display picture, wherein the brightness mapping array comprises a brightness value corresponding to each pixel point; calculating an equivalent gray scale picture of the display picture after brightness attenuation according to the brightness mapping array and the accumulated use time of the display picture; generating a brightness compensation coefficient array according to the equivalent gray scale picture corresponding to the at least one display picture; and performing brightness compensation on the current display picture according to the brightness compensation coefficient number, wherein the current display picture belongs to the at least one display picture.
In the scheme, the display control device of the OLED screen can acquire at least one display picture of the OLED screen and calculate a brightness mapping array of a gray scale picture corresponding to the display picture, wherein the brightness mapping array comprises a brightness value corresponding to each pixel point; calculating an equivalent gray scale picture of the display picture after brightness attenuation according to the brightness mapping array and the accumulated use time of the display picture; generating a brightness compensation coefficient array according to the equivalent gray scale picture corresponding to the at least one display picture; and performing brightness compensation on the current display picture according to the brightness compensation coefficient number, wherein the current display picture belongs to the at least one display picture. Like this, fine solution among the prior art because on the OLED screen, the length of time is different when the pixel is used, lead to luminance decay degree inequality to when showing the same content or similar content because different regional pixel luminance difference in the picture, cause the problem that produces the ghost phenomenon in the vision, reduce the ghost phenomenon of OLED screen, improve user's visual experience.
In a second aspect, a display control apparatus for an OLED panel is provided, including: the device comprises an acquisition unit, a display unit and a control unit, wherein the acquisition unit is used for acquiring at least one display picture of an OLED screen and calculating a brightness mapping array of a gray scale picture corresponding to the display picture, and the brightness mapping array comprises a brightness value corresponding to each pixel point; the processing unit is used for calculating an equivalent gray scale picture of the display picture after brightness attenuation according to the brightness mapping array acquired by the acquisition unit and the accumulated use time of the display picture; the processing unit is further used for generating a brightness compensation coefficient array according to the equivalent gray scale picture corresponding to the at least one display picture; and the processing unit is also used for performing brightness compensation on a current display picture according to the brightness compensation coefficient number, wherein the current display picture belongs to the at least one display picture.
In a third aspect, a display control device of an OLED screen is provided, which includes a communication interface, a processor, a memory, and a bus; the storage is used for storing computer execution instructions, the processor is connected with the storage through the bus, and when the display control device of the OLED screen runs, the processor executes the computer execution instructions stored in the storage, so that the display control device of the OLED screen executes the display control method of the OLED screen.
In a fourth aspect, a computer storage medium is provided, which includes instructions that, when executed on a computer, cause the computer to execute the display control method for an OLED screen according to the first aspect.
In a fifth aspect, a terminal device is provided, which includes the display control apparatus of the OLED panel according to the second and third aspects.
It can be understood that any one of the terminal device, the display control device of the OLED screen, or the computer storage medium provided above is used for executing the method corresponding to the first aspect provided above, and therefore, the beneficial effects that can be achieved by the method according to the first aspect above and the beneficial effects of the solutions corresponding to the following specific embodiments are referred to, and are not repeated herein.
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In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram illustrating brightness decay of an OLED panel according to an embodiment of the present invention;
fig. 2 is a flowchart of a display control method of an OLED panel according to another embodiment of the present invention;
FIG. 3 is a gray scale image of a display image according to the present invention;
FIG. 4 is an equivalent gray scale image for brightness reduction of a display image according to the present invention;
fig. 5 is a schematic structural diagram of a display control device of an OLED panel according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a display control device of an OLED panel according to another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Currently, luminance degradation of OLED screens is an inherent characteristic of current OLED products. The pixel points of the OLED screen adopt organic light-emitting materials to emit light, and the performance of the materials is reduced after the materials work for a long time, so that the brightness of the pixel points is reduced. The adjacent pixels have different brightness attenuation degrees due to different long-time display contents. As shown in fig. 1, there are provided R/green/blue (red/green/blue) sub-pixel points of an AMOLED (Active-matrix OLED, Active-matrix OLED or Active-matrix OLED) each having different degrees of brightness attenuation, where fig. 1 shows a graph of the attenuation of the R/G/B sub-pixel points of the AMOLED, where the horizontal axis is time and the vertical axis is brightness attenuation percentage, where the blue attenuation speed is fastest and then red and green are provided. Therefore, when the same content or similar content is displayed, because of the difference of the pixel brightness of different areas in the picture, a boundary, namely a ghost phenomenon, is generated visually, and the visual experience of a user is influenced.
In order to solve the above problem, referring to fig. 2, a display control method of an OLED panel includes the following steps:
101. and acquiring at least one display picture of the OLED screen, and calculating a brightness mapping array of the gray-scale picture corresponding to the display picture, wherein the brightness mapping array comprises a brightness value corresponding to each pixel point.
When the OLED screen is used, different application programs correspond to different display frames, taking a dial plate frame as an example, in step 101, gray-scale processing is performed on a color display frame to obtain a corresponding gray-scale frame, as shown in fig. 3, where the gray-scale frame may represent the brightness of each pixel point, and the brightness of each pixel point forms a brightness mapping array of the gray-scale frame. Taking fig. 3 as an example, a luminance mapping array can be constructed according to the number of pixels of the OLED panel and represented by 1028 × 1920 data.
102. And calculating the equivalent gray scale picture of the brightness attenuation of the display picture according to the brightness mapping array and the accumulated use time of the display picture.
The method comprises the following steps that an equivalent gray scale picture of the brightness attenuation of a display picture can be calculated according to the use time of the display pictures of different applications, for example, the brightness attenuation of pixel points when the OLED screen displays a certain display picture is related to the use time of the display picture, the step 102 is realized by calculating the equivalent gray scale picture according to the formula Lx 255-L0, wherein L0 is 255 (1- (1- α%)/T), T is the total time of the maximum brightness attenuation of the pixel points of the OLED screen to α%, exemplary α% > 90%, T is the use time of the display picture, L0 is a brightness mapping array of the gray scale picture corresponding to the display picture, Lx is a brightness compensation array of the equivalent gray scale picture, the brightness compensation array comprises the brightness value of each pixel point attenuation, the picture 255 is the maximum gray scale value, the picture is the use time of the display picture, the operation time of the gray scale picture corresponding to the display picture is processed by adopting a dial of the display picture, the step 102 is a brightness compensation array of the brightness value of each pixel point, the attenuation of each pixel point is obtained by adding the application time of the equivalent gray scale, and the characteristic of the use time of the display picture is easily recorded when the residual image is easily recorded by the application of the residual image.
The accumulated use time of the display picture can be recorded, and the time record can not disappear due to power failure during shutdown
103. And generating a brightness compensation coefficient array according to the equivalent gray scale picture corresponding to at least one display picture.
In step 103, when calculating the luminance compensation coefficient array, the luminance compensation coefficient array may be calculated according to a plurality of display frames with residual images. In one implementation: the method comprises the steps of superposing equivalent gray scale pictures corresponding to a plurality of display pictures to obtain an arithmetic mean value array of a brightness compensation array of at least one display picture, and determining a compensation coefficient corresponding to each pixel point according to the arithmetic mean value array; acquiring an arithmetic mean value array of a brightness compensation array of at least one display picture; and normalizing the arithmetic mean value array to obtain a brightness compensation coefficient array, wherein the brightness compensation coefficient array comprises a brightness compensation coefficient corresponding to each pixel point.
For example, corresponding to the equivalent gray-scale picture generated in step 102, for example, the data of the equivalent gray-scale picture with reduced brightness of the display picture generated for display picture a is stored in the LA array, the data of the equivalent gray-scale picture with reduced brightness of the display picture generated for display picture B is stored in the LB array, and the data of the equivalent gray-scale picture with reduced brightness of the display picture generated for display picture C is stored in the LC array. For example, when calculating the overlay effect of equivalent gray-scale frames corresponding to a plurality of display frames, calculating (LA1_1+ LB1_1+ LC1_1)/3 obtains the brightness of the overlaid data at the position of 1_1 pixel point, wherein, for a display picture or an equivalent gray scale picture, the brightness of each pixel point corresponds to a data in the two-dimensional array, according to the arrangement mode of the two-dimensional array, the images are in one-to-one correspondence from the upper left corner of the picture according to the sequence of the first row and the next row, the upper left corner of the picture corresponds to position 1_1, the lower right corner of the picture corresponds to position 1920_1028, LA1_1 represents the attenuated brightness value of the pixel in the first row and the first column of the display a in the array LA, LB1_1 represents the attenuated brightness value of the pixel in the first row and the first column of the display B in the array LB, and LC1_1 represents the attenuated brightness value of the pixel in the first row and the first column of the display C in the array LC.
For example, A, B two-dimensional arrays are adopted, an array A is used for storing the equivalent gray-scale image with the brightness attenuation of the current display image, an array B is used for storing the equivalent gray-scale image with the brightness attenuation of the next display image, when the third display occurs, A, B data of the two arrays are correspondingly calculated to obtain an arithmetic mean value array, the arithmetic mean value array is stored in the array B, the array A is used for storing the equivalent gray-scale image with the brightness attenuation of the third display image, the process is circulated until all the display images are completely calculated, finally, the arithmetic mean value array stored in the array B is normalized to obtain a brightness compensation coefficient array, exemplarily, each data in the arithmetic mean value array is normalized to form a brightness adjustment coefficient array (i _ j), namely, the brightness corresponding to each data in the arithmetic mean value array is divided by 255, the brightness adjustment coefficient still exists in one array, the brightness adjustment coefficient corresponding to each pixel point in the array I _ j is calculated to form a brightness compensation coefficient Max _ j, and the brightness compensation coefficient corresponding to each pixel point in the array is calculated according to a brightness compensation coefficient Max _ j, wherein the brightness compensation coefficient 1 pixel point comprises a brightness compensation coefficient Max _ j, and a brightness compensation coefficient # 1028 _ j, and a brightness compensation coefficient is calculated according to a pixel point β.
104. And performing brightness compensation on the current display picture according to the brightness compensation coefficient number, wherein the current display picture belongs to at least one display picture.
Illustratively, step 104 includes the steps of:
and S1, acquiring data of the RGB color space of each pixel point of the current display picture.
S2, converting the RGB color space data of each pixel point into YCbCr color space data, obtaining a brightness compensation coefficient corresponding to the pixel point in a brightness compensation coefficient array, and correcting the brightness data Y in the YCbCr color space data of the pixel point through the compensation coefficient to generate corrected YCbCr color space data.
For example: y + 16+ 0.257R + 0.504G + 0.098B;
Cb＝128-0.148*R-0.291*G+0.439*B；
Cr＝128+0.439*R-0.368*G-0.071*B。
specifically, the corrected YCbCr color space data is represented by Y' ═ Y β i _ j.
And S3, converting the corrected data of the YCbCr color space into a display picture after brightness compensation.
Illustratively, converting the modified data of the YCbCr color space into data of the RGB color space results in a luminance-compensated display picture, which is expressed as:
r ' is 1.164 ═ (Y ' -16) +1.596 ═ Cr-128, and when the calculated value of R ' is less than 0, it takes a value of 0;
g ' is 1.164 ═ Y ' -16) -0.392 ═ Cb-128-0.812 ═ Cr-128, and when G ' counts less than 0, it takes a value of 0;
b ' is 1.164 ═ Y ' -16) +2.016 ═ Cb-128 (Cb — 128) when B ' counts less than 0, take value 0. When the R ', G ', B ' conversion calculation shows decimal, taking an integer according to the rounding principle.
In another implementation manner, for the RGB three-primary-color OLED screen, in step 103, the luminance value corresponding to each pixel point in the arithmetic mean value array may be decomposed into luminance values RL, GL, and BL corresponding to three sub-pixel points in the arithmetic mean value array, and the luminance compensation coefficients RL/255, GL/255, and GL/255 in the luminance compensation coefficient array are generated according to the luminance values RL, GL, and BL corresponding to the sub-pixel points in the arithmetic mean value array. Finally, according to R ' ═ R1 × RL/255, G ' ═ G1 × GL/255, and B ' ═ B1 × BL/255. Wherein, R ', B ' and G ' are the brightness values of the sub-pixels of any pixel point in the display picture after the brightness compensation is carried out on the current display picture, and R1, G1 and B1 are the brightness values of the sub-pixels of any pixel point in the current display picture, so the processing mode is more accurate. Of course, the above scheme is also applicable to AMOLED.
In the scheme, the display control device of the OLED screen can acquire at least one display picture of the OLED screen and calculate a brightness mapping array of a gray scale picture corresponding to the display picture, wherein the brightness mapping array comprises a brightness value corresponding to each pixel point; calculating an equivalent gray scale picture of the display picture after brightness attenuation according to the brightness mapping array and the accumulated use time of the display picture; generating a brightness compensation coefficient array according to the equivalent gray scale picture corresponding to the at least one display picture; and performing brightness compensation on the current display picture according to the brightness compensation coefficient number, wherein the current display picture belongs to the at least one display picture. Like this, fine solution among the prior art because on the OLED screen, the length of time is different when the pixel is used, lead to luminance decay degree inequality to when showing the same content or similar content because different regional pixel luminance difference in the picture, cause the problem that produces the ghost phenomenon in the vision, reduce the ghost phenomenon of OLED screen, improve user's visual experience.
Referring to fig. 5, there is provided a display control apparatus for an OLED panel, for implementing the above method embodiments, including:
the acquiring unit 51 is configured to acquire at least one display picture of the OLED screen, and calculate a brightness mapping array of a grayscale picture corresponding to the display picture, where the brightness mapping array includes a brightness value corresponding to each pixel point;
the processing unit 52 is configured to calculate an equivalent gray scale image of the display image after brightness attenuation according to the brightness mapping array acquired by the acquiring unit and the accumulated use time of the display image;
the processing unit 52 is further configured to generate a brightness compensation coefficient array according to the equivalent gray scale picture corresponding to the at least one display picture;
the processing unit 52 further performs brightness compensation on a current display frame according to the brightness compensation coefficient number, where the current display frame belongs to the at least one display frame.
In an exemplary embodiment, the processing unit 52 is specifically configured to calculate the equivalent gray scale picture according to the following formula: Lx-255-L0;
wherein, L0 is 255 × T/T (1- (1- α%)), T is a total time of maximum luminance attenuation of the pixels of the OLED panel to α%, T is an accumulated use time of the display frame, L0 is a luminance mapping array of the gray-scale frame corresponding to the display frame, Lx is a luminance compensation array of the equivalent gray-scale frame, and the luminance compensation array includes a luminance value of each attenuated pixel.
In an exemplary scheme, the processing unit 52 is specifically configured to obtain a brightness compensation array of each equivalent gray scale picture according to the equivalent gray scale picture corresponding to the at least one display picture; acquiring an arithmetic mean value array of the brightness compensation array of the at least one display picture; and normalizing the arithmetic mean value array to obtain a brightness compensation coefficient array, wherein the brightness compensation coefficient array comprises a brightness compensation coefficient corresponding to each pixel point.
In an exemplary scheme, the processing unit is specifically configured to obtain data of an RGB color space of each pixel point of the current display image; converting the data of the RGB color space of each pixel point into data of a YCbCr color space, acquiring a brightness compensation coefficient corresponding to the pixel point from the brightness compensation coefficient array, and correcting brightness data Y in the data of the YCbCr color space of the pixel point through the brightness compensation coefficient to generate corrected data of the YCbCr color space; and converting the corrected data of the YCbCr color space into a display picture after brightness compensation.
All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and the function thereof is not described herein again.
In the case of an integrated module, the display control device of the OLED panel includes: the device comprises a storage unit, a processing unit and an interface unit. The processing unit is used for controlling and managing the action of the display control device of the OLED panel, for example, the processing unit is used for the display control device of the OLED panel to execute the process 101 and 104 in fig. 2. The interface unit is used for supporting the interaction between the display control device of the OLED screen and other devices, such as acquiring at least one display picture of the OLED screen from a database or a storage unit. And the storage unit is used for storing program codes and data of the display control device of the OLED screen.
For example, the processing unit is a processor, the storage unit is a memory, and the interface unit is a communication interface. The display control device of the AMOLED screen is shown in fig. 6, and includes a communication interface 601, a processor 602, a memory 603, and a bus 604, where the communication interface 601 and the processor 602 are connected to the memory 603 through the bus 604.
The Memory 603 may be a Read-Only Memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical Disc storage, optical Disc storage (including Compact Disc, laser Disc, optical Disc, digital versatile Disc, blu-ray Disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such. The memory may be self-contained and coupled to the processor via a bus. The memory may also be integral to the processor.
The memory 603 is used for storing application program codes for executing the scheme of the application, and the processor 602 controls the execution. The communication interface 601 is used for acquiring contents of other devices, for example, acquiring at least one display frame of the AMOLED screen. The processor 602 is configured to execute the application program code stored in the memory 603, thereby implementing the methods described in the embodiments of the present application.
The embodiment of the invention provides terminal equipment which comprises the display control device of the OLED screen. Further, a computing storage medium (or media) is also provided, comprising instructions which, when executed, perform the operations of the method in the above embodiments.
Additionally, a computer program product is also provided, comprising the above-described computing storage medium (or media). A terminal device is provided, which comprises the OLED screen display control device.
It should be understood that, in various embodiments of the present invention, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the units is only one logical functional division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (11)
1. A display control method of an OLED screen is characterized by comprising the following steps:
acquiring at least one display picture of an OLED screen, and calculating a brightness mapping array of a gray scale picture corresponding to the display picture, wherein the brightness mapping array comprises a brightness value corresponding to each pixel point;
calculating an equivalent gray scale picture of the brightness attenuation of the display picture according to the brightness mapping array and the accumulated use time of the display picture;
generating a brightness compensation coefficient array according to the equivalent gray scale picture corresponding to the at least one display picture;
and performing brightness compensation on the current display picture according to the brightness compensation coefficient number, wherein the current display picture belongs to the at least one display picture.
2. The method according to claim 1, wherein the calculating an equivalent gray-scale image of the luminance decay of the display image according to the luminance mapping array and the accumulated usage time of the display image comprises:
calculating the equivalent gray scale picture according to the following formula: Lx-255-L0;
wherein, L0 is 255 × T/T (1- (1- α%)), T is a total time of maximum luminance attenuation of the pixels of the OLED panel to α%, T is an accumulated use time of the display frame, L0 is a luminance mapping array of the gray-scale frame corresponding to the display frame, Lx is a luminance compensation array of the equivalent gray-scale frame, and the luminance compensation array includes a luminance value of each attenuated pixel.
3. The display control method of the OLED screen according to claim 2, wherein a brightness compensation coefficient array is generated according to an equivalent gray scale picture corresponding to the at least one display picture; the method comprises the following steps:
acquiring a brightness compensation array of each equivalent gray scale picture according to the equivalent gray scale picture corresponding to the at least one display picture;
acquiring an arithmetic mean value array of the brightness compensation array of the at least one display picture;
and normalizing the arithmetic mean value array to obtain a brightness compensation coefficient array, wherein the brightness compensation coefficient array comprises a brightness compensation coefficient corresponding to each pixel point.
4. The display control method of the OLED screen according to claim 1, wherein the brightness compensation is performed on the current display frame according to the brightness compensation coefficient set; the method comprises the following steps:
acquiring data of RGB color space of each pixel point of the current display picture;
converting the data of the RGB color space of each pixel point into data of a YCbCr color space, acquiring a brightness compensation coefficient corresponding to the pixel point from the brightness compensation coefficient array, and correcting brightness data Y in the data of the YCbCr color space of the pixel point through the brightness compensation coefficient to generate corrected data of the YCbCr color space;
and converting the corrected data of the YCbCr color space into a display picture after brightness compensation.
5. A display control device of an OLED screen is characterized by comprising:
the device comprises an acquisition unit, a display unit and a control unit, wherein the acquisition unit is used for acquiring at least one display picture of an OLED screen and calculating a brightness mapping array of a gray scale picture corresponding to the display picture, and the brightness mapping array comprises a brightness value corresponding to each pixel point;
the processing unit is used for calculating an equivalent gray scale picture of the brightness attenuation of the display picture according to the brightness mapping array acquired by the acquisition unit and the accumulated service time of the display picture;
the processing unit is further used for generating a brightness compensation coefficient array according to the equivalent gray scale picture corresponding to the at least one display picture;
and the processing unit is also used for performing brightness compensation on a current display picture according to the brightness compensation coefficient number, wherein the current display picture belongs to the at least one display picture.
6. The display control device of the OLED panel according to claim 5, wherein the processing unit is specifically configured to calculate the equivalent grayscale picture according to the following formula: Lx-255-L0;
wherein, L0 is 255 × T/T (1- (1- α%)), T is a total time of maximum luminance attenuation of the pixels of the OLED panel to α%, T is an accumulated use time of the display frame, L0 is a luminance mapping array of the gray-scale frame corresponding to the display frame, Lx is a luminance compensation array of the equivalent gray-scale frame, and the luminance compensation array includes a luminance value of each attenuated pixel.
7. The display control device of the OLED screen according to claim 6, wherein the processing unit is specifically configured to obtain a brightness compensation array of each equivalent grayscale picture according to the equivalent grayscale picture corresponding to the at least one display picture; acquiring an arithmetic mean value array of the brightness compensation array of the at least one display picture; and normalizing the arithmetic mean value array to obtain a brightness compensation coefficient array, wherein the brightness compensation coefficient array comprises a brightness compensation coefficient corresponding to each pixel point.
8. The display control device of the OLED panel according to claim 5, wherein the processing unit is specifically configured to obtain data of RGB color space of each pixel point of the current display screen; converting the data of the RGB color space of each pixel point into data of a YCbCr color space, acquiring a brightness compensation coefficient corresponding to the pixel point from the brightness compensation coefficient array, and correcting brightness data Y in the data of the YCbCr color space of the pixel point through the brightness compensation coefficient to generate corrected data of the YCbCr color space; and converting the corrected data of the YCbCr color space into a display picture after brightness compensation.
9. The display control device of the OLED screen is characterized by comprising a communication interface, a processor, a memory and a bus; the memory is used for storing computer-executable instructions, the processor is connected with the memory through the bus, and when the display control device of the OLED screen runs, the processor executes the computer-executable instructions stored in the memory, so that the display control device of the OLED screen executes the display control method of the OLED screen according to any one of claims 1 to 4.
10. A computer storage medium comprising instructions that, when run on a computer, cause the computer to perform the method of display control of an OLED screen according to any one of claims 1-4.
11. A terminal device, characterized by comprising a display control apparatus of an OLED screen as claimed in any one of claims 5 to 9.
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