CN109741715B - Compensation method and compensation device for display panel and storage medium - Google Patents
Compensation method and compensation device for display panel and storage medium Download PDFInfo
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Abstract
The invention provides a compensation method, a compensation device and a storage medium of a display panel, wherein the method comprises the following steps: acquiring a first compensation table for storing compensation information of each pixel; and compensating the display panel according to the compensation table. The compensation data corresponding to each compensation sub-block is obtained from a preset reference compensation sub-block corresponding to each compensation sub-block, and the reference compensation sub-block of each compensation sub-block is the compensation sub-block with the maximum cross energy spectrum peak value in a preset area near the current compensation sub-block. According to the compensation table, the compensation table is divided into the compensation sub-blocks, the reference compensation sub-block of each compensation sub-block is obtained respectively, and then a new compensation table after compression processing is obtained, so that the compression process can be simplified, the coding speed is increased, and the compensation efficiency of the display panel is improved.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a compensation method, a compensation apparatus, and a storage medium for a display panel.
Background
Liquid Crystal Display (LCD) has many advantages such as thin body, power saving, no radiation, and is widely used, for example: liquid crystal televisions, mobile phones, PADs, digital cameras, computer screens, etc., have been dominant in the field of flat panel displays.
Most of the lcd panels in the market today are backlight lcd panels, which include an lcd panel and a backlight module (backlight module). The liquid crystal display panel has the working principle that liquid crystal molecules are added between a thin film Transistor Array Substrate (thin film Transistor Array Substrate) and a Color Filter Substrate (Color Filter, CF), and the rotation direction of the liquid crystal molecules is controlled by driving voltages on the two substrates, so that light rays of the backlight module are refracted out to generate pictures.
Due to various defects of the liquid crystal display panel in the manufacturing process, the produced liquid crystal display panel often has uneven brightness and various traces, namely mura phenomenon. In order to improve the brightness uniformity of the display panel, the prior art usually performs mura compensation on the display panel, and the specific operation is to capture a picture displayed by the liquid crystal display panel through a professional measuring device, obtain a brightness difference between a central area and a peripheral area of the picture, and obtain compensation data, so that the brightness of the peripheral area is consistent with the brightness of the central area.
In order to save storage space and reduce production cost, in the prior art, a display panel is divided into a plurality of small areas for compression, compensation data of one pixel is selected in each area for storage, and compensation data of other pixels are obtained by performing bilinear interpolation on the stored pixel compensation data. However, with the development of the technology, the size and resolution of the lcd panel are continuously increased, and the compensation effect obtained by the bilinear interpolation adopted in the prior art cannot meet the requirements of people, and is poor and the images are excessively unsmooth.
Disclosure of Invention
Aiming at the defects that a compensation table occupies a large amount of system storage resources, the coding speed is low, the compression flow is complex, the mean square error only considers the integral average value, the structural similarity is neglected, and the display panel is inaccurate in the compensation method, the compensation device and the storage medium of the display panel in the prior art, the compensation method, the compensation device and the storage medium of the display panel are provided by the invention.
The invention provides a compensation method, a compensation device and a storage medium of a display panel, wherein the compensation method of the display panel comprises the following steps:
acquiring and compressing a second compensation table to obtain a first compensation table, wherein the second compensation table stores compensation information of each pixel;
each pixel in the first compensation table is divided into a plurality of compensation sub-blocks, each compensation sub-block comprises a plurality of pixels arranged in an array mode, compensation data corresponding to each compensation sub-block are obtained by a preset reference compensation sub-block corresponding to each compensation sub-block, and the reference compensation sub-block of each compensation sub-block is the compensation sub-block with the largest cross energy spectrum peak value in a preset area nearby the current compensation sub-block.
And compensating the display panel according to the first compensation table.
Further, the obtaining and compressing the second compensation table to obtain the first compensation table includes:
acquiring a second compensation table for storing initial compensation information of each pixel;
dividing each pixel in the second compensation table into a plurality of compensation sub-blocks, wherein each compensation sub-block comprises a plurality of pixels arranged in an array;
determining a reference compensation subblock for each compensation subblock;
and processing and compressing the second compensation table according to the reference compensation subblock of each compensation subblock to obtain the first compensation table.
Further, the processing and compressing the second compensation table according to the reference compensation subblock of each compensation subblock to obtain the first compensation table includes:
and compressing the second compensation table by combining an encoding algorithm according to the reference compensation subblock of each compensation subblock to obtain a first compensation table.
Further, the determining the reference compensation sub-block of each compensation sub-block includes:
respectively carrying out intra-frame prediction and inter-frame prediction on each compensation subblock, and determining a cross energy spectrum between a current compensation subblock and a subblock to be referenced at a preset position;
and comparing cross energy spectrum values corresponding to the inter-frame prediction and the intra-frame prediction of the current compensation subblock, and selecting a subblock to be referenced corresponding to the maximum value of the cross energy spectrum as a reference compensation subblock of the current compensation subblock.
Further, the separately performing intra-frame prediction and inter-frame prediction on each compensation subblock, and determining a cross energy spectrum between a current compensation subblock and each reference compensation subblock includes:
determining the position of the current sub-block;
and under the intra-frame prediction mode and the inter-frame prediction mode, calculating a cross energy spectrum between the current compensation sub-block and a to-be-referenced sub-block at a preset position.
Further, the calculating a cross energy spectrum between the current compensation subblock and the subblock to be referenced in the preset position in the intra-frame prediction mode and the inter-frame prediction mode includes:
calculating a first cross energy spectrum corresponding to at least one sub block of the current compensation sub block in an intra-frame prediction mode;
calculating a second cross energy spectrum corresponding to at least one sub-block of the current compensation sub-block in an inter-frame prediction mode;
the step of comparing cross energy spectrum values corresponding to the inter-frame prediction and the intra-frame prediction of the current compensation subblock, and selecting the subblock to be referenced corresponding to the maximum value of the cross energy spectrum as the reference compensation subblock of the current compensation subblock comprises the following steps:
determining a target cross energy spectrum with a maximum peak value in the first cross energy spectrum and the second cross energy spectrum;
and taking the sub-block to be referred corresponding to the target cross energy spectrum as a reference compensation sub-block of the current compensation sub-block.
Further, the step of calculating a first cross energy spectrum corresponding to at least one sub-block of the current compensated sub-block in the intra prediction mode comprises:
when the current compensation subblock is not in the first row or the first column, respectively calculating first cross energy spectrums of the current compensation subblock and at least two subblocks at preset positions in an intra-frame prediction mode;
when the current compensation sub-block is in the first row or the first column, calculating a first cross energy spectrum of the current sub-block and at least one sub-block of a preset position in an intra-frame prediction mode.
Further, the step of calculating a second cross energy spectrum corresponding to at least one sub-block of the current compensated sub-block in the inter prediction mode comprises:
and when the current compensation subblock is not positioned in the first row or the first column, calculating a second cross energy spectrum of the current compensation subblock and the compensation subblock at the position corresponding to the previous frame in the inter-frame prediction mode.
And when the current compensation subblock is in the first row or the first column, calculating a second cross energy spectrum of the current compensation subblock and a subblock at a position corresponding to the previous frame in an inter-frame prediction mode.
The present invention also provides a compensation apparatus for a display panel, comprising: an acquisition unit and a compensation unit.
Further, the obtaining unit is configured to obtain and compress a second compensation table to obtain a first compensation table, where the second compensation table stores compensation information of each pixel; each pixel in the first compensation table is divided into a plurality of compensation sub-blocks, each compensation sub-block comprises a plurality of pixels arranged in an array mode, compensation data corresponding to each compensation sub-block are obtained by a preset reference compensation sub-block corresponding to each compensation sub-block, and the reference compensation sub-block of each compensation sub-block is the compensation sub-block with the largest cross energy spectrum peak value in a preset area nearby the current compensation sub-block.
And the compensation unit is used for compensating the display panel according to the first compensation table.
The invention has the beneficial effects that: the embodiment of the invention utilizes the peak value size of the cross energy spectrum to represent the similarity of two sub-blocks, and the larger the peak value is, the higher the similarity is. Therefore, the sub-block with the larger cross energy spectrum peak value is selected as the compensation sub-block of the current sub-block, so that the prediction mode of the current sub-block can be determined. Compared with the traditional method, the invention simplifies the data compression process and accelerates the coding speed, thereby improving the working efficiency of the display panel.
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In order to illustrate the embodiments or the technical solutions in the prior art more clearly, 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 invention, and it is obvious for a person skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a display panel compensation method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an embodiment of a first compensation table for obtaining and storing compensation information of each pixel in the compensation method for a display panel according to the present invention;
fig. 3 is a schematic view of a display panel compensation apparatus according to an embodiment of the present invention.
Detailed Description
The following description of the various embodiments refers to the accompanying drawings that illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], are only referring to the directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention. In the drawings, elements having similar structures are denoted by the same reference numerals.
The drawings and description are to be regarded as illustrative in nature, and not as restrictive. In the drawings, elements having similar structures are denoted by the same reference numerals. In addition, the size and thickness of each component shown in the drawings are arbitrarily illustrated for understanding and convenience of description, but the present invention is not limited thereto.
In the drawings, the thickness of layers, films, panels, regions, etc. are exaggerated for clarity. In the drawings, the thickness of some layers and regions are exaggerated for convenience of understanding and convenience of description. It is noted that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be referred to as being "on" another element. The component may be directly on the other component or intervening components may also be present.
In addition, in the description, unless explicitly described to the contrary, the word "comprise" will be understood to mean that the recited components are included, but not to exclude any other components. Further in the specification, "on … …" means above or below the target component, and does not mean that it must be on top based on the direction of gravity.
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined invention, the following detailed description is provided for the compensation method, compensation device and storage medium of the display panel according to the present invention with reference to the accompanying drawings and preferred embodiments, and the detailed implementation, structure, features and effects thereof are described below.
Fig. 1 is a schematic diagram of an embodiment of a display panel compensation method according to the present invention. In an embodiment of the present invention, the compensation method of the display panel may include the following steps:
and S1, acquiring and compressing a second compensation table to obtain a first compensation table, wherein the second compensation table stores compensation information of each pixel.
Each pixel in the first compensation table is divided into a plurality of compensation sub-blocks, each compensation sub-block comprises a plurality of pixels arranged in an array mode, compensation data corresponding to each compensation sub-block are obtained by a preset reference compensation sub-block corresponding to each compensation sub-block, and the reference compensation sub-block of each compensation sub-block is the compensation sub-block with the largest cross energy spectrum peak value in a preset area nearby the current compensation sub-block.
And S2, compensating the display panel according to the first compensation table.
The embodiment of the invention utilizes the peak value size of the cross energy spectrum to represent the similarity of two sub-blocks, and the larger the peak value is, the higher the similarity is. Therefore, the sub-block with the larger cross energy spectrum peak value is selected as the compensation sub-block of the current sub-block, so that the prediction mode of the current sub-block can be determined. Compared with the traditional method, the invention simplifies the data compression process and accelerates the coding speed, thereby improving the working efficiency of the display panel.
As shown in fig. 2, in some other embodiments of the present invention, obtaining and compressing the second compensation table to obtain the first compensation table may include:
s201, acquiring a second compensation table storing initial compensation information of each pixel.
Wherein the initial second compensation table size storing the compensation information of each pixel may be equal to the number of panel pixels multiplied by the size of each set of compensation information.
S202, dividing each pixel in the second compensation table into a plurality of compensation sub-blocks, wherein each compensation sub-block comprises a plurality of pixels arranged in an array.
In some embodiments of the present invention, the plurality of compensation sub-blocks may be: the compensation sub-block A, the upper compensation sub-block AU, the left compensation sub-block AL, the compensation sub-block B of the corresponding position of the previous frame, and the like.
And S203, determining reference compensation sub-blocks of the compensation sub-blocks.
And S204, processing and compressing the second compensation table according to the reference compensation subblock of each compensation subblock to obtain the first compensation table.
In some embodiments of the present invention, processing and compressing the second compensation table according to the reference compensation subblock of each compensation subblock to obtain the first compensation table may include: and compressing the second compensation table by combining an encoding algorithm according to the reference compensation subblock of each compensation subblock to obtain a first compensation table.
Specifically, compressing the second compensation table with the coding algorithm to obtain the first compensation table may include transforming, quantizing, and scanning the second compensation table, and compressing the second compensation table with the coding algorithm to obtain the first compensation table.
In some other embodiments of the present invention, the determining the reference sub-block of each compensation sub-block may include:
the respectively performing intra-frame prediction and inter-frame prediction on each compensation subblock, and determining a cross energy spectrum between a current compensation subblock and a subblock to be referenced at a preset position may include: calculating a first cross energy spectrum corresponding to at least one sub block of the current compensation sub block in an intra-frame prediction mode; and calculating a second cross energy spectrum corresponding to at least one sub-block of the current compensation sub-block in the inter-prediction mode.
Comparing the first cross energy spectrum of the current compensation subblock in the inter-frame prediction mode with the second cross energy spectrum of the current compensation subblock in the intra-frame prediction mode, selecting the subblock to be referenced corresponding to the minimum value of the cross energy spectrum as the reference compensation subblock of the current compensation subblock
In some embodiments of the present invention, the sub-block to be referred to in the preset position may be a sub-block at a corresponding position of an upper sub-block, a left sub-block, and a previous frame of a current compensation sub-block.
Preferably, the calculating of the cross energy spectrum between the current compensation sub-block and the reference compensation sub-block at the preset position may employ the following method:
the image corresponding to the current compensation sub-block is f1(x, y), shifting the current compensation sub-block to obtain a corresponding image f2(x,y)=f1(x-Δx,y-Δy)
And carrying out Fourier transform on the image obtained after the displacement to obtain:
F2(u,v)=F1(u,v)e-j(uΔx+vΔy)
the cross energy spectrum is calculated, and the formula for obtaining the normalized cross energy spectrum can be as follows:
and then carrying out inverse Fourier transform on the obtained product to obtain: p (x, y), and calculating to obtain a peak value of p (x, y), namely a cross energy spectrum between the current compensation subblock and the reference compensation subblock at the preset position.
Preferably, the performing intra prediction and inter prediction on each compensation subblock separately, and the determining the cross energy spectrum between the current compensation subblock and each reference compensation subblock may include: determining the position of the current sub-block; and under the intra-frame prediction mode and the inter-frame prediction mode, calculating a cross energy spectrum between the current compensation sub-block and a to-be-referenced sub-block at a preset position.
Specifically, in some embodiments of the present invention, calculating a cross energy spectrum between a current compensation subblock and a subblock to be referenced at a preset position in an intra prediction mode and an inter prediction mode includes: calculating a first cross energy spectrum corresponding to at least one sub block of the current compensation sub block in an intra-frame prediction mode; and calculating a second cross energy spectrum corresponding to at least one sub-block of the current compensation sub-block in the inter-prediction mode.
Wherein, calculating a first cross energy spectrum corresponding to at least one sub-block of the current compensated sub-block in the intra prediction mode may include:
and when the current compensation subblock is not in the first row or the first column, respectively calculating first cross energy spectrums of the current compensation subblock and at least two subblocks at preset positions in an intra-frame prediction mode.
In some embodiments of the present invention, the at least two sub-blocks of the preset position may be an upper compensation sub-block and a left compensation sub-block of a position where a current compensation sub-block is located.
When the current compensation sub-block is in the first row or the first column, calculating a first cross energy spectrum of the current sub-block and at least one sub-block of a preset position in an intra-frame prediction mode.
In some embodiments of the present invention, the at least two sub-blocks in the preset position may be compensation sub-blocks at corresponding positions in a previous frame corresponding to a position where a current compensation sub-block is located.
Calculating a second cross energy spectrum corresponding to at least one sub-block of the current compensated sub-block in the inter prediction mode may include:
and when the current compensation subblock is not positioned in the first row or the first column, calculating a second cross energy spectrum of the current compensation subblock and the compensation subblock at the position corresponding to the previous frame in the inter-frame prediction mode.
And when the current compensation subblock is in the first row or the first column, calculating a second cross energy spectrum of the current compensation subblock and a subblock at a position corresponding to the previous frame in an inter-frame prediction mode.
The comparing the cross energy spectrum value corresponding to the inter prediction and the intra prediction of the current compensation subblock, and selecting the subblock to be referenced corresponding to the maximum value of the cross energy spectrum as the reference compensation subblock of the current compensation subblock may include:
determining a target cross energy spectrum with a maximum peak value in the first cross energy spectrum and the second cross energy spectrum;
and taking the sub-block to be referred corresponding to the target cross energy spectrum as a reference compensation sub-block of the current compensation sub-block.
The present invention also provides a compensation apparatus for a display panel, and in some embodiments of the present invention, as shown in fig. 3, the compensation apparatus 300 for a display panel may include: an acquisition unit 301 and a compensation unit 302.
The obtaining unit 301 is configured to obtain and compress a second compensation table to obtain a first compensation table, where the second compensation table stores compensation information of each pixel;
each pixel in the first compensation table is divided into a plurality of compensation sub-blocks, each compensation sub-block comprises a plurality of pixels arranged in an array mode, compensation data corresponding to each compensation sub-block are obtained by a preset reference compensation sub-block corresponding to each compensation sub-block, and the reference compensation sub-block of each compensation sub-block is the compensation sub-block with the largest cross energy spectrum peak value in a preset area nearby the current compensation sub-block.
The compensation unit 302 is configured to compensate the display panel according to the first compensation table.
Aiming at the display panel compensation method in the prior art, the compensation table occupies a large amount of system storage resources, the coding speed is low, the compression flow is complex, the mean square error only considers the integral average value, the structural similarity is neglected, and the display panel compensation method is inaccurate.
The compensation device of the display panel in the embodiment of the invention utilizes the size of the peak value of the cross energy spectrum to represent the similarity of the two sub-blocks, and the larger the peak value is, the higher the similarity is. Therefore, the sub-block with the larger cross energy spectrum peak value is selected as the compensation sub-block of the current sub-block, so that the prediction mode of the current sub-block can be determined. Compared with the traditional compensation device of the display panel, the compensation device of the display panel simplifies the data compression process and accelerates the coding speed, thereby improving the working efficiency of the display panel.
In some embodiments of the present invention, the obtaining unit 301 may specifically be configured to:
a second compensation table storing initial compensation information of each pixel is obtained.
And dividing each pixel in the second compensation table into a plurality of compensation sub-blocks, wherein each compensation sub-block comprises a plurality of pixels arranged in an array.
A reference compensation sub-block for each compensation sub-block is determined.
And processing and compressing the second compensation table according to the reference compensation subblock of each compensation subblock to obtain the first compensation table.
In some embodiments of the present invention, the obtaining unit 301 may specifically be configured to: and compressing the second compensation table by combining an encoding algorithm according to the reference compensation subblock of each compensation subblock to obtain a first compensation table.
In some other embodiments of the present invention, the obtaining unit 301 may specifically be configured to: respectively carrying out intra-frame prediction and inter-frame prediction on each compensation subblock, and determining a cross energy spectrum between a current compensation subblock and a subblock to be referenced at a preset position; and comparing cross energy spectrum values corresponding to the inter-frame prediction and the intra-frame prediction of the current compensation subblock, and selecting a subblock to be referenced corresponding to the minimum value of the cross energy spectrum as a reference compensation subblock of the current compensation subblock.
In some embodiments of the present invention, the sub-block to be referred to in the preset position may be a sub-block at a corresponding position of an upper sub-block, a left sub-block, and a previous frame of a current compensation sub-block.
Preferably, the obtaining unit 301 may calculate the cross energy spectrum between the current compensation sub-block and the reference compensation sub-block at the preset position by using the following method:
the image corresponding to the current compensation sub-block is f1(x, y), shifting the current compensation sub-block to obtain a corresponding image f2(x,y)=f1(x-Δx,y-Δy)
And carrying out Fourier transform on the image obtained after the displacement to obtain:
F2(u,v)=F1(u,v)e-j(uΔx+vΔy)
the cross energy spectrum is calculated, and the formula for obtaining the normalized cross energy spectrum can be as follows:
and performing inverse Fourier transform on the P (u, v) to obtain: p (x, y), and calculating to obtain a peak value of p (x, y), namely a cross energy spectrum between the current compensation subblock and the reference compensation subblock at the preset position.
Preferably, the obtaining unit 301 is specifically configured to: determining the position of the current sub-block; and under the intra-frame prediction mode and the inter-frame prediction mode, calculating a cross energy spectrum between the current compensation sub-block and a to-be-referenced sub-block at a preset position.
Specifically, in some embodiments of the present invention, calculating a cross energy spectrum between a current compensation subblock and a subblock to be referenced at a preset position in an intra prediction mode and an inter prediction mode includes: calculating a first cross energy spectrum corresponding to at least one sub block of the current compensation sub block in an intra-frame prediction mode; and calculating a second cross energy spectrum corresponding to at least one sub-block of the current compensation sub-block in the inter-prediction mode.
Wherein, calculating a first cross energy spectrum corresponding to at least one sub-block of the current compensated sub-block in the intra prediction mode may include:
and when the current compensation subblock is not in the first row or the first column, respectively calculating first cross energy spectrums of the current compensation subblock and at least two subblocks at preset positions in an intra-frame prediction mode.
In some embodiments of the present invention, the at least two sub-blocks of the preset position may be an upper compensation sub-block and a left compensation sub-block of a position where a current compensation sub-block is located.
When the current compensation sub-block is in the first row or the first column, calculating a first cross energy spectrum of the current sub-block and at least one sub-block of a preset position in an intra-frame prediction mode.
In some embodiments of the present invention, the at least two sub-blocks in the preset position may be compensation sub-blocks at corresponding positions in a previous frame corresponding to a position where a current compensation sub-block is located.
Calculating a second cross energy spectrum corresponding to at least one sub-block of the current compensated sub-block in the inter prediction mode may include:
and when the current compensation subblock is not positioned in the first row or the first column, calculating a second cross energy spectrum of the current compensation subblock and the compensation subblock at the position corresponding to the previous frame in the inter-frame prediction mode.
And when the current compensation subblock is in the first row or the first column, calculating a second cross energy spectrum of the current compensation subblock and a subblock at a position corresponding to the previous frame in an inter-frame prediction mode.
The comparing the cross energy spectrum value corresponding to the inter prediction and the intra prediction of the current compensation subblock, and selecting the subblock to be referenced corresponding to the maximum value of the cross energy spectrum as the reference compensation subblock of the current compensation subblock may include:
determining a target cross energy spectrum with a maximum peak value in the first cross energy spectrum and the second cross energy spectrum;
and taking the sub-block to be referred corresponding to the target cross energy spectrum as a reference compensation sub-block of the current compensation sub-block.
The present invention also provides a storage medium storing a plurality of instructions, where the instructions are suitable for being loaded by a processor to perform the steps in any of the above embodiments of the display panel compensation method.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.
Claims (10)
1. A compensation method of a display panel is characterized by comprising the following steps:
acquiring and compressing a second compensation table to obtain a first compensation table, wherein the second compensation table stores compensation information of each pixel;
each pixel in the first compensation table is divided into a plurality of compensation sub-blocks, each compensation sub-block comprises a plurality of pixels arranged in an array mode, compensation data corresponding to each compensation sub-block are obtained by a preset reference compensation sub-block corresponding to each compensation sub-block, and the reference compensation sub-block of each compensation sub-block is the compensation sub-block with the largest cross energy spectrum peak value in a preset area nearby the current compensation sub-block;
and compensating the display panel according to the first compensation table.
2. The compensation method for the display panel according to claim 1, wherein the obtaining and compressing the second compensation table to obtain the first compensation table comprises:
acquiring a second compensation table for storing initial compensation information of each pixel;
dividing each pixel in the second compensation table into a plurality of compensation sub-blocks, wherein each compensation sub-block comprises a plurality of pixels arranged in an array;
determining a reference compensation subblock for each compensation subblock;
and processing and compressing the second compensation table according to the reference compensation subblock of each compensation subblock to obtain the first compensation table.
3. The compensation method of claim 2, wherein the processing and compressing the second compensation table according to the reference compensation sub-block of each compensation sub-block to obtain the first compensation table comprises:
and compressing the second compensation table by combining an encoding algorithm according to the reference compensation subblock of each compensation subblock to obtain a first compensation table.
4. The compensation method for a display panel according to claim 2, wherein the determining the reference compensation sub-block of each compensation sub-block comprises:
respectively carrying out intra-frame prediction and inter-frame prediction on each compensation subblock, and determining a cross energy spectrum between a current compensation subblock and a subblock to be referenced at a preset position;
and comparing cross energy spectrum values corresponding to the inter-frame prediction and the intra-frame prediction of the current compensation subblock, and selecting a subblock to be referenced corresponding to the maximum value of the cross energy spectrum as a reference compensation subblock of the current compensation subblock.
5. The compensation method for the display panel according to claim 4, wherein the separately performing intra-frame prediction and inter-frame prediction on each compensation sub-block, and determining the cross energy spectrum between the current compensation sub-block and each reference compensation sub-block comprises:
determining the position of the current sub-block;
and under the intra-frame prediction mode and the inter-frame prediction mode, calculating a cross energy spectrum between the current compensation sub-block and a to-be-referenced sub-block at a preset position.
6. The compensation method of claim 5, wherein the calculating of the cross energy spectrum between the current compensated sub-block and the pre-set position of the sub-block to be referenced in the intra-frame prediction mode and the inter-frame prediction mode comprises:
calculating a first cross energy spectrum corresponding to at least one sub block of the current compensation sub block in an intra-frame prediction mode;
calculating a second cross energy spectrum corresponding to at least one sub-block of the current compensation sub-block in an inter-frame prediction mode;
the step of comparing cross energy spectrum values corresponding to the inter-frame prediction and the intra-frame prediction of the current compensation subblock, and selecting the subblock to be referenced corresponding to the maximum value of the cross energy spectrum as the reference compensation subblock of the current compensation subblock comprises the following steps:
determining a target cross energy spectrum with a maximum peak value in the first cross energy spectrum and the second cross energy spectrum;
and taking the sub-block to be referred corresponding to the target cross energy spectrum as a reference compensation sub-block of the current compensation sub-block.
7. The compensation method as claimed in claim 6, wherein the step of calculating the first cross energy spectrum corresponding to at least one sub-block of the current compensated sub-block in intra prediction mode comprises:
when the current compensation subblock is not in the first row or the first column, respectively calculating first cross energy spectrums of the current compensation subblock and at least two subblocks at preset positions in an intra-frame prediction mode;
when the current compensation sub-block is in the first row or the first column, calculating a first cross energy spectrum of the current sub-block and at least one sub-block of a preset position in an intra-frame prediction mode.
8. The compensation method as claimed in claim 6, wherein the step of calculating the second cross energy spectrum corresponding to at least one sub-block of the current compensated sub-block in the inter prediction mode comprises:
when the current compensation subblock is not in the first row or the first column, calculating a second cross energy spectrum of the current compensation subblock and a compensation subblock at a position corresponding to the previous frame in an inter-frame prediction mode;
and when the current compensation subblock is in the first row or the first column, calculating a second cross energy spectrum of the current compensation subblock and a subblock at a position corresponding to the previous frame in an inter-frame prediction mode.
9. A compensation apparatus for a display panel, comprising: an acquisition unit, and a compensation unit;
the acquiring unit is used for acquiring and compressing a second compensation table to obtain a first compensation table, wherein the second compensation table stores compensation information of each pixel;
each pixel in the first compensation table is divided into a plurality of compensation sub-blocks, each compensation sub-block comprises a plurality of pixels arranged in an array mode, compensation data corresponding to each compensation sub-block are obtained by a preset reference compensation sub-block corresponding to each compensation sub-block, and the reference compensation sub-block of each compensation sub-block is the compensation sub-block with the largest cross energy spectrum peak value in a preset area nearby the current compensation sub-block;
and the compensation unit is used for compensating the display panel according to the first compensation table.
10. A storage medium storing a plurality of instructions, the instructions being adapted to be loaded by a processor to perform the steps of the compensation method for a display panel according to any one of claims 1 to 8.
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