CN117542325A - Compensation device, method, equipment and storage medium of display panel - Google Patents

Compensation device, method, equipment and storage medium of display panel Download PDF

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Publication number
CN117542325A
CN117542325A CN202311572024.XA CN202311572024A CN117542325A CN 117542325 A CN117542325 A CN 117542325A CN 202311572024 A CN202311572024 A CN 202311572024A CN 117542325 A CN117542325 A CN 117542325A
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China
Prior art keywords
image
display panel
difference
acquisition
exposure time
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CN202311572024.XA
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Chinese (zh)
Inventor
王一飞
田雪松
侯帅
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BOE Technology Group Co Ltd
Chengdu BOE Optoelectronics Technology Co Ltd
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BOE Technology Group Co Ltd
Chengdu BOE Optoelectronics Technology Co Ltd
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Priority to CN202311572024.XA priority Critical patent/CN117542325A/en
Publication of CN117542325A publication Critical patent/CN117542325A/en
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • 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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/36—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 by control of light from an independent source using liquid crystals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/03—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes specially adapted for displays having non-planar surfaces, e.g. curved displays
    • G09G3/035—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes specially adapted for displays having non-planar surfaces, e.g. curved displays for flexible display surfaces
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • 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]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The application discloses a compensation device, a compensation method, compensation equipment and a storage medium of a display panel, and belongs to the technical field of display. The device comprises: the acquisition module is used for acquiring images of the pictures displayed on the display panel based on the first exposure time to obtain a first image and a second image, the pictures displayed on the display panel are refreshed once in each change period, and the time interval between the acquisition time of the first image and the acquisition time of the second image is different from the integral multiple of the change period; the acquisition module is used for acquiring a first difference degree between the first image and the second image; the determining module is used for determining a complete picture displayed by the display panel based on the first difference degree; and the compensation module is used for compensating the display panel according to the complete picture. The device analyzes the difference degree of the acquired first image and the acquired second image, so that a complete picture displayed by the display panel is used for compensation, compensation errors caused by incomplete pictures are avoided, and the compensation accuracy is improved.

Description

Compensation device, method, equipment and storage medium of display panel
Technical Field
The embodiment of the application relates to the technical field of display, in particular to a compensation device, a compensation method, compensation equipment and a storage medium of a display panel.
Background
In the manufacturing process of the display panel, the display panel may have a phenomenon of non-uniformity due to problems of purity of the light emitting material, fineness of the manufacturing process, and the like. In the related art, pictures displayed on a display panel are collected by photographing, an area of display unevenness in the display panel is determined based on the collected pictures, and compensation is performed on the display panel so that the displayed pictures are uniform.
Because the frames displayed by the display panel can be refreshed once in each change period, namely, the display panel can display a complete frame in the time of one change period, the exposure time in photographing is inconsistent with the change period of the frames displayed by the display panel in the related art, and the acquired frames are inconsistent with the complete frame displayed by the display panel, so that errors are compensated.
Disclosure of Invention
The embodiment of the application provides a compensation device, a compensation method, compensation equipment and a storage medium of a display panel, which can be used for solving the problems existing in the related technology. The technical scheme is as follows:
In a first aspect, there is provided a compensation apparatus of a display panel, the apparatus comprising:
the acquisition module is used for acquiring images of pictures displayed on the display panel based on the first exposure time to obtain a first image and a second image, the pictures displayed on the display panel are refreshed once in each change period, and the time interval between the acquisition time of the first image and the acquisition time of the second image is different from the integral multiple of the change period;
the acquisition module is used for acquiring a first difference degree between the first image and the second image;
the determining module is used for determining a complete picture displayed by the display panel based on the first difference degree;
and the compensation module is used for compensating the display panel according to the complete picture.
In another aspect, there is also provided a compensation apparatus of a display panel, the apparatus including:
the acquisition module is used for acquiring images of pictures displayed on the display panel based on first exposure time to obtain a first image, the pictures displayed on the display panel are refreshed once in each change period, and the first exposure time is determined based on integer times of the change period;
A determining module, configured to determine a complete picture displayed by the display panel based on the first image;
and the compensation module is used for compensating the display panel according to the complete picture.
In another aspect, there is provided a compensation method of a display panel, the method including:
image acquisition is carried out on a picture displayed on a display panel based on first exposure time to obtain a first image and a second image, the picture displayed on the display panel is refreshed once in each change period, and the time interval between the acquisition time of the first image and the acquisition time of the second image is different from the integral multiple of the change period;
acquiring a first difference degree between the first image and the second image, and determining a complete picture displayed by the display panel based on the first difference degree;
and compensating the display panel according to the complete picture.
In another aspect, a compensation method of a display panel is provided, the method including:
image acquisition is carried out on a picture displayed on a display panel based on a first exposure time, a first image is obtained, the picture displayed on the display panel is refreshed once in each change period, and the first exposure time is determined based on integer multiples of the change period;
Determining a complete picture displayed by the display panel based on the first image;
and compensating the display panel according to the complete picture.
In another aspect, there is also provided a computer device, the computer device including a processor and a memory, the memory storing at least one computer program, the at least one computer program being loaded and executed by the processor, to cause the computer device to implement the method of compensating for a display panel according to any of the above aspects.
In another aspect, there is also provided a computer readable storage medium having stored therein at least one computer program loaded and executed by a processor to cause a computer to implement the method for compensating a display panel according to any of the above aspects.
In another aspect, a computer program product or computer program is provided, the computer program product or computer program comprising computer instructions stored in a computer readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions so that the computer device performs the compensation method of the display panel according to any one of the above aspects.
The technical scheme provided by the embodiment of the application at least brings the following beneficial effects:
according to the technical scheme, the difference degree of the first image and the second image obtained by image acquisition on the picture displayed by the display panel is analyzed, the complete picture displayed by the display panel can be determined, and then the display panel is compensated based on the complete picture, so that the situation that the acquired image is inconsistent with the complete picture, namely, the picture is incomplete, and the error compensation is caused is avoided, and the accuracy of compensation is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of an implementation environment of a compensation device of a display panel and a compensation method of the display panel according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a compensation device of a display panel according to an embodiment of the present application;
FIG. 3 is a flowchart of an image acquisition process according to an embodiment of the present disclosure;
FIG. 4 is a flowchart of another embodiment of a method for acquiring images;
fig. 5 is a schematic diagram of a complete screen flow for determining display of a display panel according to an embodiment of the present application;
FIG. 6 is a schematic structural diagram of another compensation device for a display panel according to an embodiment of the present disclosure;
FIG. 7 is a flowchart of a compensation method for a display panel according to an embodiment of the present disclosure;
FIG. 8 is a flowchart of another compensation method for a display panel according to an embodiment of the present disclosure;
fig. 9 is a schematic structural diagram of a server according to an embodiment of the present application;
fig. 10 is a schematic structural diagram of a terminal according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
It should be noted that the terms "first," "second," and the like in the description of the present application (if any) are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or otherwise described herein. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with aspects of the present application.
In the manufacturing process of the display panel, the display panel is used as a component for the interaction between the user and the electronic equipment, and the quality of the display panel directly influences the visual experience of the user. Along with the development of display technology, the manufacturing process of the display panel is continuously improved, but in the manufacturing process, the display panel has the phenomenon of uneven display due to various factors such as the purity of the luminescent material, the fineness of the manufacturing process and the like. The phenomenon of non-uniformity of display exists in various display technologies such as liquid crystal display and organic light emitting display, and therefore, compensation is required for the display panel in the manufacturing process, so that the displayed picture is more uniform.
In the related art, a picture displayed by a display panel is acquired through photographing, and an area with uneven display is determined by utilizing an image analysis technology; then, based on the area of uneven display, the display panel is compensated by adjusting the driving signal or backlight brightness of the display panel, so that the displayed picture is more uniform.
However, in practical applications, since the display panel is dynamically refreshed, the display content is updated once in each variation period. Therefore, when the shot image is acquired, if the shot exposure time is not matched with the variation period of the display panel, the acquired image may not be consistent with the complete image displayed by the display panel, so that erroneous judgment on the uneven display area is caused, compensation errors are further caused, and the uniformity of the display effect is finally affected.
For the problem of uneven display compensation of a display panel, the embodiment of the application provides a compensation device of the display panel, which can enable acquired pictures to be consistent with complete pictures displayed by the display panel, thereby avoiding the occurrence of compensation error conditions. With respect to the display panel compensation device, the embodiment of the application also provides a display panel compensation method, referring to fig. 1, and provides a display panel compensation device and an implementation environment schematic diagram of the display panel compensation method, where the implementation environment includes an image acquisition device 11.
The image acquisition device 11 can acquire a picture displayed by the display panel, and determine a complete picture displayed by the display panel according to the difference degree of the acquired images. Illustratively, the image capturing device 11 is provided with at least one camera, the image capturing device 11 can capture a picture displayed on the display panel through the camera, the image capturing device 11 is provided with image processing hardware, the image capturing device 11 can obtain the difference degree of the captured image through the image processing hardware, and a complete picture displayed on the display panel is determined according to the obtained difference degree, and then the display panel is compensated according to the determined complete picture.
In a possible implementation, the implementation environment further includes an image processing device 12, and the image capturing device 11 and the image processing device 12 establish a communication connection through a wired or wireless network. The image capturing device 11 can send the captured image to the image processing device 12, and the image processing device 12 can receive the captured image and obtain the difference between the captured images, so that the complete picture displayed by the display panel is determined according to the obtained difference, and then the display panel is compensated according to the determined complete picture. In the embodiment of the present application, the image processing apparatus 12 may be a computer, or a server cluster composed of a plurality of servers, or a cloud computing service center.
Alternatively, the process of image capturing on the display panel may be applied to a production process of the display panel, or applied to a detection process of the display panel, which is not limited in the embodiment of the present application.
It will be appreciated by those skilled in the art that the image capturing device 11 and the image processing device 12 described above are by way of example only, and that other image capturing devices or image processing devices, as may be present in the present application, are intended to be within the scope of the present application and are incorporated herein by reference.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a compensation device of a display panel according to an embodiment of the present application. The apparatus can be applied to the implementation environment shown in fig. 1, for example, the apparatus is applied to the image capturing device 11 shown in fig. 1, or to the image capturing device 11 and the image processing device 12 shown in fig. 1. As shown in fig. 2, the compensation device of the display panel includes an acquisition module 201, an acquisition module 202, a determination module 203, and a compensation module 204.
The acquisition module 201 is configured to perform image acquisition on a frame displayed on the display panel based on the first exposure time, so as to obtain a first image and a second image, wherein the frame displayed on the display panel is refreshed once in each change period, and a time interval between the acquisition time of the first image and the acquisition time of the second image is different from an integer multiple of the change period.
In the manufacturing and quality control process of the display panel, in order to detect and compensate the problem of uneven display, an image acquisition method is adopted to acquire the picture displayed by the display panel. The exposure time refers to the time that the photosensitive element is exposed to light when a camera or other image acquisition equipment shoots or acquires an image, and the brightness and detail of the image can be influenced by the length of the exposure time. For example, the brightness of an image acquired by one lamp with an exposure time of 1 second is a first brightness, and the brightness acquired by the other lamp with an exposure time of 2 seconds is a second brightness twice, i.e., the image acquisition device can continuously superimpose and acquire the light of the photographic subject during the exposure time.
For example, taking three lamps arranged in parallel as an example, the three lamps are numbered A, B and C in sequence, and the three lamps are turned on and off one by one, for example, the A lamp is turned on for 1 second and then turned off, the B lamp is turned on for 1 second and then turned off, and the C lamp is turned on for 1 second and then turned off. Wherein, there is no interval between the off time of the A lamp and the on time of the B lamp, there is no interval between the off time of the B lamp and the on time of the C lamp, the brightness of the A, B, C three lamps is consistent, and the three lamps are considered to be off and start to happen instantaneously. At this time, if the exposure time is 1 second, only the a lamp is turned on in the obtained image, if the exposure time is 2 seconds, both the a lamp and the B lamp are turned on and the brightness is uniform in the obtained image, and if the exposure time is 3 seconds, both the a lamp, the B lamp and the C lamp are turned on and the brightness is uniform in the obtained image. It will be appreciated that the image acquisition device is capable of continuously acquiring images during the exposure time and superimposing the brightness of the continuously acquired images on one image.
In the actual operation process, if the exposure time is too short, the acquired image may be too dark, and the details are not clearly seen; if the exposure time is too long, the acquired image may be too bright or even overexposed, losing detail. Therefore, the proper exposure time can ensure that the acquired image truly reflects the display effect of the display panel, so that the detection and compensation of uneven display can be accurately performed.
The process of displaying a picture by the display panel can be understood as a scanning process, the display panel continuously and sequentially applies voltage to each pixel, and the working principle of the display panel is to realize the display of the picture based on the state of dynamically driving the pixel points. In order to maintain continuous and stable display of the picture, the display panel needs to continuously update the state of each pixel, and the update is realized through a refreshing process. The refreshing process can also prevent the picture from generating the phenomenon of residual shadow or distortion. When the display panel displays the same picture for a long time, the pixel points may have residual shadows due to continuous light emission or picture distortion due to signal interference and other reasons, and the state of the pixel points can be reset through continuous refreshing, so that the residual shadows are avoided, the possibility of distortion is reduced, and the definition and detail of the picture are maintained.
In this embodiment of the present application, the frame displayed by the display panel is a static solid-color frame, so that the image collected by the embodiment of the present application compensates the display panel, and the refresh mode of the display panel is exemplified by refreshing one line and one line, that is, the pixels in the first line are simultaneously lit up in the display process, if there is one thousand lines in the display panel, after traversing one thousand lines, the display panel applies a voltage to the pixels in the first line again and makes the pixels in the first line be lit up again. Thus, the first row of the display panel does not emit light until the first row is re-lit after the first row is turned off, and at this time, the pixels of the first row may be being charged and prepared for the next light emission.
It can be seen that, during the exposure time, if the exposure time is continued from the first line to be re-lit, the brightness of the first line is higher than that of the other lines in the acquired picture. If this image is used as an image for compensating the display panel, the brightness of the first line may be erroneously lowered.
Referring to a flowchart of an image acquisition process shown in fig. 3, a process of acquiring an image during an exposure time is shown in fig. 3, including an image 301 to be acquired, an image 302 to be acquired in the middle, and an image 303 to be acquired to be 304, it can be seen that a shadow exists in the image 301 to be acquired, and the shadow is considered to be that the pixels in the first row may be charging, and a shadow area exists in the image 304 to be acquired through superposition of the images acquired by 301 to 303.
Referring to another acquired picture flow chart shown in fig. 4, the acquired picture flow chart has large polarity differences between different rows and even different frames due to Chopper setting, the exposure time does not cover the whole Chopper variation period, and stripes similar to horizontal stripes appear. The display period set by Chopper can be regarded as applying positive polarity for a first time to one pixel and applying negative polarity for the first time so that the integration becomes zero. At this time, the frame displayed on the display panel is a complete frame.
The principle of the Chopper setting is to realize complete display of the display panel picture based on dynamic driving and refreshing technology. The voltage polarity of the pixel point is periodically changed, so that the accumulation effects of the positive voltage and the negative voltage are mutually counteracted in a complete change period, and the zero net charge state of the pixel point is realized. This periodic refresh ensures that each pixel on the display panel emits light uniformly and continuously and eliminates pixel residue that may occur due to long-term unipolar driving.
Thus, in fig. 4, the polarity accumulation of the four rows of pixels is not zero, and the brightness is larger as the corresponding accumulation value is larger, so that the brightness of the second row image 402, the first row image 401, the third row image 403 and the fourth row image 404 is gradually reduced, wherein the accumulation value is determined by the polarity in the accumulation time. For example, the first row corresponds to a positive polarity duration of 10 units of time, a negative polarity duration of 6 units of time, and the cumulative value is the positive polarity duration minus the negative polarity duration of 4. Correspondingly, the accumulated value of the second row is 6, the accumulated value of the third row is-8, and the accumulated value of the fourth row is-10.
And acquiring images of the pictures displayed by the display panel, and at least obtaining a first image and a second image so as to determine whether the exposure time used for the acquisition is correct or not according to the difference between the first image and the second image.
Illustratively, a time interval between the acquisition time of the first image and the acquisition time of the second image is different from an integer multiple of the variation period. If the time interval between the acquisition time of the first image and the acquisition time of the second image is the same as the integral multiple of the change period, and because the picture displayed by the display panel is refreshed once in each change period, in this case, the first image and the second image are consistent, it is impossible to determine whether the exposure time is appropriate by judging the difference degree of the first image and the second image. For the acquisition process of acquiring multiple images, the position of the image acquisition equipment is kept unchanged, so that the designability of the obtained images is improved, namely, the first image and the second image are used for indicating the images with the same conditions except for different acquisition time, and the first image and the second image can be compared.
In one possible implementation, a time interval between the acquisition time of the first image and the acquisition time of the second image is less than or equal to a time interval threshold. The time interval threshold may be set differently according to different batches of display panels, for example, the time interval threshold may be zero. Optionally, the acquisition module 321 is configured to continuously perform image acquisition on the frame displayed on the display panel twice based on the first exposure time, so as to obtain a first image and a second image. Therefore, the time for image acquisition can be saved, and the condition that the time interval between the acquisition time of the first image and the acquisition time of the second image is different from the integral multiple of the change period can be satisfied.
An obtaining module 202 is configured to obtain a first degree of difference between the first image and the second image.
In the case that the first image and the second image are acquired by the acquisition module 201, in order to determine whether the display panel is uniformly displayed, the acquired first image and second image are typically analyzed and compared, and a complete picture displayed by the display panel is determined according to the analysis result. The degree of difference may be understood as the degree of difference or similarity between two images. The degree of difference of the two images at the pixel level or the feature level can be calculated by an image processing algorithm. The degree of difference may be a numerical value or a difference map for quantitatively expressing the difference between the two images.
In one possible implementation, the first difference degree can indicate a difference of pixel points between the two images, and the obtaining module 202 is configured to obtain the first difference degree between the first image and the second image based on the number of pixels included in the first image and the pixel value of each pixel point, the number of pixels included in the second image and the pixel value of each pixel point.
Each image is composed of a large number of pixels, and each pixel is the smallest unit of the image. The number of pixels is the total number of pixel points contained in the image. Each pixel has one or more values, typically including the values of three channels, red, green, and blue, and possibly transparency. These values determine the color and brightness of the pixel. There are various methods of calculating the degree of difference between two images, including but not limited to: comparing the pixel values of the corresponding pixels, for example, the difference between the RGB values of two pixels at the same position can be calculated; or comparing the histograms of the two images, wherein the histograms can reflect the distribution condition of each pixel value in the images; alternatively, by extracting features of the image, then comparing differences between the features.
In one possible implementation, the first degree of difference may be MSE (Mean squared error, mean square error) or PSNR (Peak Signal to Noise Ratio ). For example, acquiring a first degree of difference of the first image and the second image includes: and acquiring the mean square error between the pixel points of the first image and the pixel points of the second image, wherein the mean square error indicates the first degree of difference, and the mean square error is positively correlated with the first degree of difference. The mean square error of the pixels of the first image and the second image may be obtained by performing the following formula,
wherein MSE is mean square error, N is the number of pixels in the first image or the second image, i is the number of pixel bits in the first image or the second image, x i For the brightness or color value, y, of the ith pixel in the first image i Is the luminance or color value of the ith pixel in the second image. A smaller mean square error indicates a smaller first degree of difference, i.e. a smaller difference between the first image and the second image.
Alternatively, acquiring a first degree of difference of the first image and the second image includes: and obtaining peak signal-to-noise ratios of the first image and the second image, wherein the peak signal-to-noise ratio indicates the degree of difference, and the peak signal-to-noise ratio is in negative correlation with the degree of difference. The peak signal-to-noise ratio of the first image and the second image may be obtained by performing the following formula,
Wherein PSNR is peak signal-to-noise ratio, MSE is mean square error, and N is the number of pixels in the first image or the second image. The larger the peak signal-to-noise ratio is, the smaller the first degree of difference, i.e. the smaller the difference between the first image and the second image.
The determining module 203 is configured to determine a complete picture displayed on the display panel based on the first difference.
After obtaining the first difference between the first image and the second image through the obtaining module 202, the determining module 203 may determine the displayed complete frame of the display panel according to the first difference. If the first difference degree is small, the first image and the second image are very similar, which means that the exposure time is close to the change period, that is, the obtained first image and the second image are all the superposition of the images with integral multiple of the change period, that is, the complete picture displayed by the display panel. If the first degree of difference is large, indicating a large difference between the two images, an adjustment of the exposure time is required.
In a possible implementation manner, the determining module 203 is configured to adjust the first exposure time to the second exposure time in a case where the first difference does not meet the difference condition; the acquisition module 201 is further configured to perform image acquisition on a frame displayed on the display panel based on the second exposure time, so as to obtain a third image and a fourth image, where a time interval between the acquisition time of the third image and the acquisition time of the fourth image is different from an integer multiple of the variation period; the obtaining module 202 is further configured to obtain a second degree of difference between the third image and the fourth image; the determining module 203 is further configured to determine a complete picture based on the second degree of difference.
The embodiment in which the acquisition module 201 performs image acquisition on the picture displayed on the display panel based on the second exposure time is similar to the embodiment in which the acquisition module 201 performs image acquisition on the picture displayed on the display panel based on the first exposure time; an embodiment in which the acquisition module 202 acquires the second degree of difference between the third image and the fourth image is similar to an embodiment in which the acquisition module 202 acquires the first degree of difference between the first image and the second image; the determining module 203 determines an embodiment of the complete picture based on the second degree of difference, similar to the determining module 203 determines an embodiment of the complete picture based on the second degree of difference; the embodiments of the present application are not described in detail.
In a possible implementation, the determining module 203 is configured to adjust the first exposure time to the second exposure time based on the first difference; or, for adjusting the first exposure time to the second exposure time based on an integer multiple of the variation period.
The process of adjusting the first exposure time to the second exposure time based on the first difference degree may be that, in a case where the first difference degree does not satisfy the difference degree condition, the first exposure time is adjusted to be any one third exposure time, and a third difference degree between at least two images acquired based on the third exposure time is acquired. If the third difference degree meets the difference degree condition, determining the third exposure time as the second exposure time; if the third difference degree does not meet the difference degree condition, adjusting the third exposure time to be any updated third exposure time, acquiring updated third difference degree between at least two images acquired based on the updated third exposure time, and determining the updated third exposure time to be the second exposure time until the updated third difference degree meets the difference degree condition. The difference condition may be that there is no difference, that is, two images are completely identical, or a threshold interval is set, and in the threshold interval, the obtained image is considered to indicate a complete picture displayed by the display panel.
The process of adjusting the first exposure time to the second exposure time based on the integer multiple of the variation period may be that the variation period of the display panel is directly obtained through the acquired code of the display panel, and the second exposure time is set to the integer multiple of the variation period.
In a possible implementation manner, the determining module 203 is configured to determine that at least one of the first image and the second image is a complete picture when the first difference degree meets a difference degree condition. If the first degree of difference satisfies the degree of difference condition, the first image and the second image may be considered similar or the difference between them may be insignificant, and thus, at least one image may be considered as a complete picture, and thus, at least one of the first image and the second image may be considered as a complete picture.
The compensation module 204 is configured to compensate the display panel according to the complete frame.
After the complete picture of the display panel is determined, if the display panel is found to have a problem of uneven display, compensation for the display panel is required. The compensation process for compensating the display panel may be automated or may be manually fine-tuned. For example, parameters such as brightness, contrast, color, etc. of the display panel are adjusted, or the physical structure of the display panel is fine-tuned to eliminate the phenomenon of uneven display. The process of compensation may involve multiple iterations and adjustments until the display effect reaches a desired uniformity.
In one possible implementation, the compensation module 204 is configured to determine, according to the brightness of each pixel on the complete screen, a first pixel in the display panel, where the brightness of the first pixel is inconsistent with the brightness of other pixels around the first pixel; and compensating the first pixel point in the display panel so as to enable the brightness of the first pixel point to be consistent with the brightness of other pixel points.
By way of example, compensation may include aspects that make the brightness distribution across the display panel more uniform by increasing or decreasing the brightness of a particular area. Or, for the problem of uneven display color, the color balance of the display panel can be achieved by adjusting the color setting of the display panel. Alternatively, in some cases, the display unevenness may be caused by a problem of the physical structure of the display panel, and fine adjustment of the physical structure of the display panel may be required. Or, by adjusting the electronic signals driving the display panel, the display effect can be improved and the picture can be more uniform.
After compensation is completed, the image is typically acquired again for analysis to verify the effect of the compensation. If the effect is unsatisfactory, further adjustments and optimizations may be made.
Illustratively, the compensation module 204 is configured to execute the complete screen flow diagram shown in fig. 5 for determining the display panel display. As shown in fig. 5, the determination of the complete picture flow displayed by the display panel includes, but is not limited to, the following steps 501-505.
Step 501, starting to collect a picture displayed by a display panel based on the same exposure time; step 502, acquiring a first image according to an acquisition result; step 503, obtaining a second image according to the acquisition result; step 504, determining a degree of difference between the first image and the second image; step 505, judging whether the difference degree meets the difference degree condition; if the difference degree meets the difference degree condition, determining that the first image and the second image are complete images displayed by the display panel, executing step 506, outputting the complete images displayed by the display panel, and returning to executing step 501; if the difference does not meet the difference condition, determining that the first image and the second image are not complete images displayed by the display panel, executing step 507, and checking the problem of the change period or adjusting the exposure time.
In summary, according to the compensation device for the display panel provided by the embodiment of the application, the difference degree between the first image and the second image obtained by image acquisition of the image displayed by the display panel is analyzed, the complete image displayed by the display panel can be determined, and then the display panel is compensated based on the complete image, so that the situation that the acquired image is inconsistent with the complete image, namely, the image is incomplete, and the compensation error is caused is avoided, and the compensation accuracy is improved.
Referring to fig. 6, fig. 6 is a schematic structural diagram of another compensation device for a display panel according to an embodiment of the present application. The apparatus can be applied to the implementation environment shown in fig. 1, for example, the apparatus is applied to the image capturing device 11 shown in fig. 1, or to the image capturing device 11 and the image processing device 12 shown in fig. 1. As shown in fig. 6, the compensation device of the display panel includes an acquisition module 601, a determination module 602, and a compensation module 603.
The acquisition module 601 is configured to perform image acquisition on a frame displayed on the display panel based on a first exposure time, so as to obtain a first image, wherein the frame displayed on the display panel is refreshed once in each change period, and the first exposure time is determined based on an integer multiple of the change period.
In display technology, image acquisition is the process of acquiring the current display content of a display panel, and is usually performed by a camera, a scanner or other image capturing devices. The exposure time is a parameter of the camera or the image acquisition equipment when acquiring images, and determines the time of exposure of the photosensitive element of the camera to light, so that the brightness, definition and detail of the acquired images are affected. After the first exposure time is set, image acquisition is carried out on a picture displayed by the display panel, and the output result is a first image. The process of acquiring the first image may refer to the related description of the acquisition module 201 in fig. 2, which is not described herein. As explained above, the display panel displays a picture that is refreshed once per change period.
In order to ensure that the acquired image accurately reflects the display content of the display panel, the first exposure time is set to an integer multiple of the variation period. The choice of integer multiples may also be adapted appropriately, and longer integer multiples may average out some details, with the choice of appropriate integer multiples being based on specific application needs and scenarios. Taking into account the variation period of the display panel and the influence of exposure time in the image acquisition process, the obtained first image is ensured to reflect the complete picture displayed by the display panel most accurately. The embodiment of the application does not limit the method for determining the integer multiple of the change period, for example, the change period set in the display program of the display panel is directly read.
The acquisition module 601 is similar to the embodiment of the acquisition module 201 and will not be described again here. Wherein the acquisition module 601 differs from the acquisition module 201 in that the first exposure time is determined based on an integer multiple of the variation period.
A determining module 602, configured to determine a complete picture displayed by the display panel based on the first image.
In order to determine the accuracy of the currently acquired complete picture displayed by the display panel, the first image may be verified, where the verification process includes performing image acquisition again on the picture displayed by the display panel based on the first exposure time to obtain a second image, where a time interval between the acquisition time of the first image and the acquisition time of the second image is different from an integer multiple of the variation period, and the time interval is used to acquire a first difference degree between the first image and the second image, and determining the complete picture based on the first difference degree.
In a possible implementation manner, the acquisition module 601 is further configured to acquire an image of a frame displayed on the display panel again based on the first exposure time, so as to obtain a second image, where a time interval between the acquisition time of the first image and the acquisition time of the second image is different from an integer multiple of the variation period; the apparatus further comprises: the acquisition module is used for acquiring a first difference degree between the first image and the second image; a determining module 602, configured to determine a complete picture based on the first degree of difference.
The acquiring module in the embodiment of the present application is similar to the implementation manner of the acquiring module 202, and the determining module 602 is similar to the implementation manner of the determining module 203, which is not described herein. Alternatively, the determining module 602 may also directly determine the first image as a complete picture displayed by the display panel.
The compensation module 603 is configured to compensate the display panel according to the complete frame.
The compensation module 603 is similar to the implementation of the compensation module 204 and will not be described here again.
In summary, according to the compensation device for the display panel provided by the embodiment of the application, the exposure time is determined based on the integral multiple of the change period of the picture displayed by the display panel, the first image acquired based on the exposure time is the complete picture displayed by the display panel, and the situation that the acquired first image is inconsistent with the complete picture and the error is compensated is avoided. In addition, the second image is acquired again through the picture displayed on the display panel, and the accuracy of compensation is improved through the difference degree of the first image and the second image as a verification mode.
It should be noted that, when any of the apparatuses provided in the embodiments of fig. 2 and fig. 6 implement the functions thereof, only the division of the functional modules is illustrated, and in actual functions, the functional allocation may be performed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules, so as to perform all or part of the functions described above. In addition, the apparatus and method embodiments provided in the foregoing embodiments belong to the same concept, and the specific implementation process of the apparatus and method embodiments can be seen in the following method embodiments.
Referring to fig. 7, fig. 7 is a flowchart of a compensation method for a display panel according to an embodiment of the present application, where the method is applied to the compensation device for the display panel shown in fig. 2. The method is applicable to the implementation environment shown in fig. 1, for example, the method is performed by the image acquisition apparatus 11 shown in fig. 1; alternatively, the method is interactively performed by the image capturing apparatus 11 and the image processing apparatus 12 shown in fig. 1. As shown in fig. 7, the method includes, but is not limited to, the following steps 701-703.
In step 701, image acquisition is performed on a picture displayed on the display panel based on the first exposure time to obtain a first image and a second image, the picture displayed on the display panel is refreshed once in each change period, and a time interval between the acquisition time of the first image and the acquisition time of the second image is different from an integer multiple of the change period.
Optionally, a time interval between the acquisition time of the first image and the acquisition time of the second image is less than or equal to a time interval threshold. The embodiment of step 701 may refer to the embodiment of the acquisition module 201 shown in fig. 2, and will not be described herein.
Step 702, obtaining a first difference between the first image and the second image, and determining a complete frame displayed on the display panel based on the first difference.
In one possible implementation, the first difference degree can indicate a difference of pixel points between two images, and acquiring the first difference degree between the first image and the second image includes: and acquiring a first difference degree between the first image and the second image based on the pixel number and the pixel value of each pixel point included in the first image and the pixel number and the pixel value of each pixel point included in the second image. Illustratively, the first degree of difference is MSE or PSNR.
In one possible implementation, the process of determining a complete picture displayed by the display panel based on the first degree of difference includes: and when the first difference degree does not meet the difference degree condition, adjusting the first exposure time to be the second exposure time. The method further comprises the steps of: and acquiring a second difference degree between the third image and the fourth image, and determining a complete picture based on the second difference degree.
Wherein, under the condition that the first difference degree does not meet the difference degree condition, the process of adjusting the first exposure time to the second exposure time comprises the following steps: adjusting the first exposure time to a second exposure time based on the first degree of difference; or, for adjusting the first exposure time to the second exposure time based on an integer multiple of the variation period.
In one possible implementation, the process of determining a complete picture displayed by the display panel based on the first degree of difference includes: and determining at least one of the first image and the second image as a complete picture in the case that the first degree of difference satisfies the degree of difference condition.
The embodiment of step 702 may refer to the embodiments of the acquisition module 202 and the determination module 203 shown in fig. 2, and will not be described herein.
And step 703, compensating the display panel according to the complete picture.
In one possible implementation, compensating the display panel according to the complete picture includes: determining a first pixel point in the display panel according to the brightness of each pixel point on the complete picture, wherein the brightness of the first pixel point is inconsistent with the brightness of other pixel points around the first pixel point; and compensating the first pixel point in the display panel so as to enable the brightness of the first pixel point to be consistent with the brightness of other pixel points.
The embodiment of step 703 may refer to the embodiment of the compensation module 204 shown in fig. 2, and will not be described herein.
In summary, according to the compensation method for the display panel provided by the embodiment of the application, the difference degree of the first image and the second image, which are obtained by performing image acquisition on the image displayed by the display panel, can be determined to obtain the complete image displayed by the display panel, so that the display panel is compensated based on the complete image, the situation that the acquired image is inconsistent with the complete image, namely, the image is incomplete, and the compensation error is caused is avoided, and the compensation accuracy is improved.
Referring to fig. 8, fig. 8 is a flowchart of another compensation method for a display panel according to an embodiment of the present application, where the method is applied to the compensation device for a display panel shown in fig. 6. The method is applicable to the implementation environment shown in fig. 1, for example, the method is performed by the image acquisition apparatus 11 shown in fig. 1; alternatively, the method is interactively performed by the image capturing apparatus 11 and the image processing apparatus 12 shown in fig. 1. As shown in fig. 8, the method includes, but is not limited to, the following steps 801-803.
Step 801, image acquisition is performed on a picture displayed on the display panel based on a first exposure time, so as to obtain a first image, the picture displayed on the display panel is refreshed once in each change period, and the first exposure time is determined based on an integer multiple of the change period.
The embodiment of step 801 may refer to the embodiment of the acquisition module 601 shown in fig. 6, and will not be described herein.
Step 802, determining a complete picture displayed by the display panel based on the first image.
In order to ensure the accuracy of the complete picture displayed by the display panel, a verification process is required. During the verification process, the method further comprises: and acquiring the image of the picture displayed by the display panel by using the same first exposure time again to obtain a second image. The second image is a picture of the display panel acquired at a different point in time than the first image. The time interval between the acquisition time of the first image and the acquisition time of the second image is different from the integral multiple of the change period, so that the influence of image difference caused by normal refreshing of the display panel is eliminated, and the integrity and the accuracy of a picture are detected more accurately. The first degree of difference between the first image and the second image is calculated by comparing the pixel values, colors or other relevant features of the two images. This degree of difference quantifies the difference between the two acquired images.
According to the first difference degree, the accuracy of the complete picture displayed by the display panel can be evaluated. If the first difference degree is smaller, the difference between the two acquired images is not large, and the currently acquired picture displayed by the display panel can be considered to be complete. If the first difference is larger, it may mean that the acquired picture cannot represent the complete picture displayed by the display panel, and the exposure time needs to be readjusted to determine the complete picture.
The implementation of step 802 may refer to the implementation of the determining module 602 shown in fig. 6, which is not described herein.
And 803, compensating the display panel according to the complete picture.
The embodiment of step 803 can be referred to the embodiment of the compensation module 603 shown in fig. 6, and will not be described herein.
In summary, according to the compensation method for the display panel provided by the embodiment of the application, the exposure time is determined based on the integral multiple of the change period of the picture displayed by the display panel, the first image acquired based on the exposure time is the complete picture displayed by the display panel, and the situation of compensation errors caused by inconsistent acquired first image and complete picture is avoided. In addition, the second image is acquired again through the picture displayed on the display panel, and the accuracy of compensation is improved through the difference degree of the first image and the second image as a verification mode.
Fig. 9 is a schematic structural diagram of a server provided in the embodiment of the present application, where the server may have a relatively large difference due to different configurations or performances, and may include one or more processors 901 and one or more memories 902, where the one or more memories 902 store at least one computer program, and the at least one computer program is loaded and executed by the one or more processors 901, so that the server implements the compensation method for the display panel provided in each method embodiment. Of course, the server may also have a wired or wireless network interface, a keyboard, an input/output interface, and other components for implementing the functions of the device, which are not described herein.
Fig. 10 is a schematic structural diagram of a terminal according to an embodiment of the present application. The terminal may be, for example: smart phones, tablet computers, players, notebook computers or desktop computers. Terminals may also be referred to by other names as user equipment, portable terminals, laptop terminals, desktop terminals, etc.
Generally, the terminal includes: a processor 1001 and a memory 1002.
The processor 1001 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and so on. The processor 1001 may be implemented in at least one hardware form of DSP (Digital Signal Processing ), FPGA (Field-Programmable Gate Array, field programmable gate array), PLA (Programmable Logic Array ). The processor 1001 may also include a main processor, which is a processor for processing data in an awake state, also referred to as a CPU (Central Processing Unit ), and a coprocessor; a coprocessor is a low-power processor for processing data in a standby state. In some embodiments, the processor 1001 may be integrated with a GPU (Graphics Processing Unit, image processor) for taking care of rendering and drawing of content that the display screen needs to display. In some embodiments, the processor 1001 may also include an AI (Artificial Intelligence ) processor for processing computing operations related to machine learning.
Memory 1002 may include one or more computer-readable storage media, which may be non-transitory. Memory 1002 may also include high-speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In some embodiments, a non-transitory computer readable storage medium in memory 1002 is configured to store at least one instruction for execution by processor 1001 to cause the terminal to implement the compensation method for a display panel provided by the method embodiments in the present application.
In some embodiments, the terminal may further optionally include: a peripheral interface 1003, and at least one peripheral. The processor 1001, the memory 1002, and the peripheral interface 1003 may be connected by a bus or signal line. The various peripheral devices may be connected to the peripheral device interface 1003 via a bus, signal wire, or circuit board. Specifically, the peripheral device includes: at least one of radio frequency circuitry 1004, a display 1005, a camera assembly 1006, audio circuitry 1007, and a power supply 1008.
Peripheral interface 1003 may be used to connect I/O (Input/Output) related at least one peripheral to processor 1001 and memory 1002. In some embodiments, processor 1001, memory 1002, and peripheral interface 1003 are integrated on the same chip or circuit board; in some other embodiments, either or both of the processor 1001, memory 1002, and peripheral interface 1003 may be implemented on a separate chip or circuit board, which is not limited in this embodiment.
Radio Frequency circuit 1004 is used to receive and transmit RF (Radio Frequency) signals, also known as electromagnetic signals. Radio frequency circuitry 1004 communicates with a communication network and other communication devices via electromagnetic signals. The radio frequency circuit 1004 converts an electrical signal into an electromagnetic signal for transmission, or converts a received electromagnetic signal into an electrical signal. Optionally, the radio frequency circuit 1004 includes: antenna systems, RF transceivers, one or more amplifiers, tuners, oscillators, digital signal processors, codec chipsets, subscriber identity module cards, and so forth. Radio frequency circuitry 1004 may communicate with other terminals via at least one wireless communication protocol. The wireless communication protocol includes, but is not limited to: metropolitan area networks, various generations of mobile communication networks (2G, 3G, 4G, and 5G), wireless local area networks, and/or WiFi (Wireless Fidelity ) networks. In some embodiments, the radio frequency circuitry 1004 may also include NFC (Near Field Communication ) related circuitry, which is not limited in this application.
The display screen 1005 is used to display a UI (User Interface). The UI may include graphics, text, icons, video, and any other combination. When the display 1005 is a touch screen, the display 1005 also has the ability to capture touch signals at or above the surface of the display 1005. The touch signal may be input to the processor 1001 as a control signal for processing. At this time, the display 1005 may also be used to provide virtual buttons and/or virtual keyboards, also referred to as soft buttons and/or soft keyboards. In some embodiments, the display 1005 may be one, disposed on the front panel of the terminal; in other embodiments, the display 1005 may be at least two, respectively disposed on different surfaces of the terminal or in a folded design; in other embodiments, the display 1005 may be a flexible display disposed on a curved surface or a folded surface of the terminal. Even more, the display 1005 may be arranged in a non-rectangular irregular pattern, i.e., a shaped screen. The display 1005 may be made of LCD (Liquid Crystal Display ), OLED (Organic Light-Emitting Diode) or other materials.
The camera assembly 1006 is used to capture images or video. Optionally, camera assembly 1006 includes a front camera and a rear camera. Typically, the front camera is disposed on the front panel of the terminal and the rear camera is disposed on the rear surface of the terminal. In some embodiments, the at least two rear cameras are any one of a main camera, a depth camera, a wide-angle camera and a tele camera, so as to realize that the main camera and the depth camera are fused to realize a background blurring function, and the main camera and the wide-angle camera are fused to realize a panoramic shooting and Virtual Reality (VR) shooting function or other fusion shooting functions. In some embodiments, camera assembly 1006 may also include a flash. The flash lamp can be a single-color temperature flash lamp or a double-color temperature flash lamp. The dual-color temperature flash lamp refers to a combination of a warm light flash lamp and a cold light flash lamp, and can be used for light compensation under different color temperatures.
The audio circuit 1007 may include a microphone and a speaker. The microphone is used for collecting sound waves of users and environments, converting the sound waves into electric signals, and inputting the electric signals to the processor 1001 for processing, or inputting the electric signals to the radio frequency circuit 1004 for voice communication. For the purpose of stereo acquisition or noise reduction, a plurality of microphones can be respectively arranged at different parts of the terminal. The microphone may also be an array microphone or an omni-directional pickup microphone. The speaker is used to convert electrical signals from the processor 1001 or the radio frequency circuit 1004 into sound waves. The speaker may be a conventional thin film speaker or a piezoelectric ceramic speaker. When the speaker is a piezoelectric ceramic speaker, not only the electric signal can be converted into a sound wave audible to humans, but also the electric signal can be converted into a sound wave inaudible to humans for ranging and other purposes. In some embodiments, audio circuit 1007 may also include a headphone jack.
The power supply 1008 is used to power the various components in the terminal. The power supply 1008 may be an alternating current, a direct current, a disposable battery, or a rechargeable battery. When the power supply 1008 includes a rechargeable battery, the rechargeable battery may support wired or wireless charging. The rechargeable battery may also be used to support fast charge technology.
In some embodiments, the terminal further includes one or more sensors 1009. The one or more sensors 1009 include, but are not limited to: acceleration sensor 1010, gyro sensor 1011, pressure sensor 1012, optical sensor 1013, and proximity sensor 1014.
The acceleration sensor 1010 can detect the magnitudes of accelerations on three coordinate axes of a coordinate system established with a terminal. For example, the acceleration sensor 1010 may be used to detect components of gravitational acceleration in three coordinate axes. The processor 1001 may control the display screen 1005 to display a user interface in a landscape view or a portrait view according to the gravitational acceleration signal acquired by the acceleration sensor 1010. The acceleration sensor 1010 may also be used for the acquisition of motion data of a game or a user.
The gyro sensor 1011 may detect a body direction and a rotation angle of the terminal, and the gyro sensor 1011 may collect a 3D motion of the user to the terminal in cooperation with the acceleration sensor 1010. The processor 1001 may implement the following functions according to the data collected by the gyro sensor 1011: motion sensing (e.g., changing UI according to a tilting operation by a user), image stabilization at shooting, game control, and inertial navigation.
The pressure sensor 1012 may be disposed at a side frame of the terminal and/or at an underlying layer of the display 1005. When the pressure sensor 1012 is disposed on a side frame of the terminal, a grip signal of the terminal by a user can be detected, and the processor 1001 performs left-right hand recognition or quick operation according to the grip signal collected by the pressure sensor 1012. When the pressure sensor 1012 is disposed at the lower layer of the display screen 1005, the processor 1001 controls the operability control on the UI interface according to the pressure operation of the user on the display screen 1005. The operability controls include at least one of a button control, a scroll bar control, an icon control, and a menu control.
The optical sensor 1013 is used to collect the intensity of the ambient light. In one embodiment, the processor 1001 may control the display brightness of the display screen 1005 based on the ambient light intensity collected by the optical sensor 1013. Specifically, when the intensity of the ambient light is high, the display brightness of the display screen 1005 is turned up; when the ambient light intensity is low, the display brightness of the display screen 1005 is turned down. In another embodiment, the processor 1001 may also dynamically adjust the shooting parameters of the camera module 1006 according to the ambient light intensity collected by the optical sensor 1013.
A proximity sensor 1014, also referred to as a distance sensor, is typically provided on the front panel of the terminal. The proximity sensor 1014 is used to collect the distance between the user and the front face of the terminal. In one embodiment, when the proximity sensor 1014 detects that the distance between the user and the front face of the terminal gradually decreases, the processor 1001 controls the display 1005 to switch from the bright screen state to the off screen state; when the proximity sensor 1014 detects that the distance between the user and the front surface of the terminal gradually increases, the processor 1001 controls the display 1005 to switch from the off-screen state to the on-screen state.
It will be appreciated by those skilled in the art that the structure shown in fig. 10 is not limiting of the terminal and may include more or fewer components than shown, or may combine certain components, or may employ a different arrangement of components.
In an exemplary embodiment, a computer device is also provided, the computer device comprising a processor and a memory, the memory having at least one computer program stored therein. The at least one computer program is loaded and executed by one or more processors to cause the computer apparatus to implement any of the methods of compensating a display panel described above.
In an exemplary embodiment, there is also provided a computer-readable storage medium having stored therein at least one computer program loaded and executed by a processor of a computer device to cause the computer to implement the compensation method of any one of the display panels described above.
In one possible implementation, the computer readable storage medium may be a Read-Only Memory (ROM), a random-access Memory (Random Access Memory, RAM), a compact disc Read-Only Memory (CD-ROM), a magnetic tape, a floppy disk, an optical data storage device, and the like.
In an exemplary embodiment, a computer program product or a computer program is also provided, the computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions to cause the computer device to perform any of the compensation methods of the display panel described above.
It should be noted that, information (including but not limited to user equipment information, user personal information, etc.), data (including but not limited to data for analysis, stored data, presented data, etc.), and signals referred to in this application are all authorized by the user or are fully authorized by the parties, and the collection, use, and processing of relevant data is required to comply with relevant laws and regulations and standards of relevant countries and regions. For example, the relevant data of the display panel referred to in the present application are all acquired under the condition of sufficient authorization.
It should be understood that references herein to "a plurality" are to two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.
The foregoing description of the exemplary embodiments of the present application is not intended to limit the invention to the particular embodiments of the present application, but to limit the scope of the invention to any modification, equivalents, or improvements made within the principles of the present application.

Claims (14)

1. A compensation device for a display panel, the device comprising:
the acquisition module is used for acquiring images of pictures displayed on the display panel based on the first exposure time to obtain a first image and a second image, the pictures displayed on the display panel are refreshed once in each change period, and the time interval between the acquisition time of the first image and the acquisition time of the second image is different from the integral multiple of the change period;
the acquisition module is used for acquiring a first difference degree between the first image and the second image;
The determining module is used for determining a complete picture displayed by the display panel based on the first difference degree;
and the compensation module is used for compensating the display panel according to the complete picture.
2. The apparatus of claim 1, wherein the determining module is configured to adjust the first exposure time to a second exposure time if the first degree of difference does not satisfy a degree of difference condition;
the acquisition module is further used for acquiring images of the pictures displayed by the display panel based on the second exposure time to obtain a third image and a fourth image, and the time interval between the acquisition time of the third image and the acquisition time of the fourth image is different from the integral multiple of the change period;
the acquisition module is further used for acquiring a second difference degree between the third image and the fourth image;
the determining module is further configured to determine the complete picture based on the second degree of difference.
3. The apparatus of claim 2, wherein the determining module is configured to adjust the first exposure time to the second exposure time based on the first degree of difference; or, the first exposure time is adjusted to the second exposure time based on an integer multiple of the variation period.
4. The apparatus according to claim 1, wherein the determining module is configured to determine that at least one of the first image and the second image is the complete picture if the first degree of difference satisfies a degree of difference condition.
5. The apparatus of claim 1, wherein the obtaining module is configured to obtain the first degree of difference between the first image and the second image based on a number of pixels included in the first image and a pixel value of each pixel point, and a number of pixels included in the second image and a pixel value of each pixel point.
6. The apparatus according to any of claims 1-5, wherein the first degree of difference is a mean square error, MSE, or a peak signal to noise ratio, PSNR.
7. The apparatus of any of claims 1-5, wherein a time interval between the acquisition time of the first image and the acquisition time of the second image is less than or equal to a time interval threshold.
8. The apparatus according to any one of claims 1-5, wherein the compensation module is configured to determine a first pixel in the display panel according to a luminance of each pixel on the complete picture, where the luminance of the first pixel is inconsistent with a luminance of other pixels around the first pixel; and compensating the first pixel point in the display panel to ensure that the brightness of the first pixel point is consistent with the brightness of the other pixel points.
9. A compensation device for a display panel, the device comprising:
the acquisition module is used for acquiring images of pictures displayed on the display panel based on first exposure time to obtain a first image, the pictures displayed on the display panel are refreshed once in each change period, and the first exposure time is determined based on integer times of the change period;
a determining module, configured to determine a complete picture displayed by the display panel based on the first image;
and the compensation module is used for compensating the display panel according to the complete picture.
10. The apparatus of claim 9, wherein the acquisition module is further configured to acquire a second image from a screen displayed on the display panel based on the first exposure time, and a time interval between the acquisition time of the first image and the acquisition time of the second image is different from an integer multiple of the variation period;
the apparatus further comprises: the acquisition module is used for acquiring a first difference degree between the first image and the second image;
the determining module is configured to determine the complete picture based on the first degree of difference.
11. A method of compensating a display panel, the method comprising:
image acquisition is carried out on a picture displayed on a display panel based on first exposure time to obtain a first image and a second image, the picture displayed on the display panel is refreshed once in each change period, and the time interval between the acquisition time of the first image and the acquisition time of the second image is different from the integral multiple of the change period;
acquiring a first difference degree between the first image and the second image, and determining a complete picture displayed by the display panel based on the first difference degree;
and compensating the display panel according to the complete picture.
12. A method of compensating a display panel, the method comprising:
image acquisition is carried out on a picture displayed on a display panel based on a first exposure time, a first image is obtained, the picture displayed on the display panel is refreshed once in each change period, and the first exposure time is determined based on integer multiples of the change period;
determining a complete picture displayed by the display panel based on the first image;
and compensating the display panel according to the complete picture.
13. A computer device, characterized in that the computer device comprises a processor and a memory, in which at least one computer program is stored which is loaded and executed by the processor to cause the computer device to implement the method of compensating a display panel according to claim 11 or to cause the computer device to implement the method of compensating a display panel according to claim 12.
14. A computer-readable storage medium, in which at least one computer program is stored, which is loaded and executed by a processor, to cause a computer to implement the compensation method of a display panel according to claim 11 or to implement the compensation method of a display panel according to claim 12.
CN202311572024.XA 2023-11-23 2023-11-23 Compensation device, method, equipment and storage medium of display panel Pending CN117542325A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311572024.XA CN117542325A (en) 2023-11-23 2023-11-23 Compensation device, method, equipment and storage medium of display panel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311572024.XA CN117542325A (en) 2023-11-23 2023-11-23 Compensation device, method, equipment and storage medium of display panel

Publications (1)

Publication Number Publication Date
CN117542325A true CN117542325A (en) 2024-02-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311572024.XA Pending CN117542325A (en) 2023-11-23 2023-11-23 Compensation device, method, equipment and storage medium of display panel

Country Status (1)

Country Link
CN (1) CN117542325A (en)

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