CN106782300B - The offset data processing method of OLED display panel - Google Patents
The offset data processing method of OLED display panel Download PDFInfo
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- 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
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- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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Abstract
The present invention provides a kind of offset data processing method of OLED display panel, by doing wavelet transformation to offset data, give up the detail matrices that wavelet transformation obtains, the only approximate matrix that storage wavelet transformation obtains, the approximate matrix of storage is recycled to estimate detail matrices, reconstruct wavelet transformation, and carry out anti-wavelet transform function, retrieve offset data, the compression and decompression to offset data may be implemented in turn, the system memory space that compressed offset data occupies greatly reduces, it is defeated so as to shorten production lines, the time of burning data, and compressed data have fixed compression ratio, and the error that offset data and former offset data are retrieved after decompressing is minimum, the display quality of OLED display panel is not influenced.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of offset data processing methods of OLED display panel.
Background technique
Flat panel display device has many merits such as thin fuselage, power saving, radiationless, is widely used.It is existing
Flat panel display device mainly includes liquid crystal display device (Liquid Crystal Display, LCD) and Organic Light Emitting Diode
Display device (Organic Light Emitting Display, OLED).
Organic light emitting diodde desplay device due to being provided simultaneously with self-luminous, be not required to backlight, contrast are high, thickness is thin,
The excellent characteristics such as visual angle is wide, reaction speed is fast, it is wide to can be used for flexibility panel, use temperature range, construction and processing procedure are simpler,
It is considered as the emerging application technology of next-generation flat-panel screens.
OLED display generally includes: substrate, the anode on substrate, the organic luminous layer on anode, if
In the electron transfer layer on organic luminous layer and the cathode on electron transfer layer.Come when work to organic luminous layer transmitting
Hole from anode and the electronics from cathode combine these electrons and holes and generate excitability electron-hole pair, and will swash
Hair property electron-hole pair is converted to ground state realization from excited state and shines.
Often generate Mura (brightness disproportionation due to production technology etc. in two-d display panel production process at present
It is even), there is bright spot or dim spot, the display quality of panel is caused to reduce.In order to eliminate OLED display Mura, the prior art is usual
The compensated information of each pixel in OLED display is stored using compensation table.When projecting images, driving plate searches compensation table, adjustment
Signal is turned up by the signal that panel crosses dark areas, and the signal of overly bright region is turned down, and uniform display effect is presented.In compensation table
In, each pixel corresponds to one group of compensated information, and every group of compensated information includes one or more offset datas.The object of offset data
Meaning is managed depending on algorithm, usually the adjusted value of specific grey-scale or local gamma value, also have algorithm to set it to be adjusted
Voltage value.
In the prior art, size of the size of table equal to number of pixels multiplied by every group of compensated information is compensated, for example,
To compensate the OLED display panel (pixel columns be 3840, number of lines of pixels 2160) of 4k2k, it is assumed that every group of compensated information
Size is 24bit, and number of color is redgreenblue, then compensating the occupied memory space of table is 2160*3840*24bit*3
≈597Mb.It compensates table and occupies a large amount of system memory spaces, and transmission, the process consuming of burning data are a large amount of in the production line
Time reduces the speed of service and production efficiency of OLED display.
Summary of the invention
The purpose of the present invention is to provide a kind of offset data processing methods of OLED display panel, can reduce compensation number
According to the system memory space of occupancy, shorten that production lines are defeated, time of burning data.
To achieve the above object, the present invention provides a kind of offset data processing methods of OLED display panel, including such as
Lower step:
Step 1, the offset data for obtaining OLED display panel；
Step 2 does n grades of wavelet transformations to the offset data of the OLED display panel, and the n grade for obtaining the offset data is close
It is positive integer like matrix, n grades of level detail matrixes, n grades of vertical detail matrixes and n grades of diagonal line detail matrices, n；
Step 3, the n grade approximate matrix for saving the offset data, give up n grades of level detail matrixes, n grades of vertical detail squares
Battle array and n grades of diagonal line detail matrices, to compress the offset data of the OLED display panel；
Step 4, selected n grades of approximate matrixs are data to be decompressed, if m is count parameter, and m are assigned a value of 0；
Step 5, treat decompression data do 1 grade of wavelet transformation, obtain level detail matrix, the number to be decompressed of data to be decompressed
According to vertical detail matrix and data to be decompressed diagonal line detail matrices；
Step 6, amplify the level detail matrix of data to be decompressed, the vertical detail matrix of data to be decompressed and to
The diagonal line detail matrices of data are decompressed to the size of data to be decompressed；
Step 7, by the level detail matrix of amplified data to be decompressed, the vertical detail of amplified data to be decompressed
Matrix, amplified data to be decompressed diagonal line detail matrices merge with data to be decompressed and reconstruct and carry out anti-wavelet transformation,
Data after being decompressed；
Step 8 makes m=m+1, judges whether m is equal with n, if equal, terminates, and data are to decompress after current decompression
The offset data of OLED display panel afterwards, if differing, data are data to be decompressed after selecting current decompression, and return to step
Rapid 5.
The method of wavelet transformation is carried out in the step 2 and step 5 are as follows:
Firstly, selected a pair of wavelet basis bottom, the wavelet basis bottom includes: morther wavelet vector and scaling vector, the scale
The frequency of vector is lower than the morther wavelet vector；
Then the data to be transformed are filtered with the scaling vector along line direction, and down-sampling are carried out to column,
Retain a column in every two column when down-sampling, obtains the first coefficient matrix；With the morther wavelet vector to the data edge to be transformed
Line direction is filtered, and carries out down-sampling to column, is retained a column in when down-sampling every two column, is obtained the second coefficient matrix；
First coefficient matrix is filtered with the scaling vector along column direction finally, and row adopt
Sample, when down-sampling, every two row retained a line, obtained the approximate matrix of the data to be transformed；
First coefficient matrix is filtered along column direction with the morther wavelet vector, and down-sampling is carried out to row,
Every two row retains a line when down-sampling, obtains the level detail matrix of data to be transformed；
Second coefficient matrix is filtered along column direction with the scaling vector, and down-sampling is carried out to row, under
Every two row retains a line when sampling, obtains the vertical detail matrix of data to be transformed
Second coefficient matrix is filtered along column direction with the morther wavelet vector, and down-sampling is carried out to row,
Every two row retains a line when down-sampling, obtains the diagonal line detail matrices of data to be transformed.
The method of anti-wavelet transformation in the step 6 are as follows:
Reconstruct wavelet vectors corresponding with the wavelet basis bottom selected a pair of first, the reconstruct wavelet vectors include: the
One reconstruct wavelet vectors and the second reconstruct wavelet vectors, the frequency of the first reconstruct wavelet vectors is lower than the second reconstruct small echo
Vector；
Then respectively to the vertical detail matrix and data to be decompressed of the amplified data to be decompressed along line direction
It is up-sampled, every two are in the ranks inserted into a line zero when up-sampling, with the first reconstruct wavelet vectors to described by up-sampling
The vertical detail matrix of afterwards amplified wait decompress data and the data to be decompressed after up-sampling are respectively along column direction
It is filtered, and the filtered results added of the two is obtained into the first reconstruction coefficients matrix；
Then the level detail matrix to the amplified data to be decompressed and amplified data to be decompressed respectively
Diagonal line detail matrices up-sampled along line direction, every two are in the ranks inserted into a line zero when up-sampling, with second reconstruct
Wavelet vectors are to the amplified level detail matrix wait decompress data after up-sampling and after up-sampling
The diagonal line detail matrices of amplified data to be decompressed be filtered respectively along column direction, and by the filtered result of the two
Addition obtains the second reconstruction coefficients matrix；
Finally the first reconstruction coefficients matrix and the second heavy industry coefficient matrix are up-sampled respectively, when up-sampling
Every two are in the ranks inserted into a line zero, with the first reconstruct wavelet vectors to the first reconstruction coefficients matrix after up-sampling along line direction
It is filtered, the second reconstruction coefficients matrix after up-sampling is filtered along line direction with the second reconstruct wavelet vectors,
And data after being decompressed the filtered results added of the two.
By the level detail matrixes of the data to be decompressed, data to be decompressed by way of interpolation in the step 5
The diagonal line detail matrices quadruplication of vertical detail matrix and data to be decompressed.
The interpolation method that the step 5 uses is bilinear interpolation.
The offset data of OLED display panel is the data of picture format in the step 1.
The compression ratio of the offset data of the OLED display panel is 1/4n。
Level-one wavelet transformation, the pressure of the offset data of the OLED display panel are carried out to offset data in the step 2
Shrinkage is 1/4.
Beneficial effects of the present invention: the present invention provides a kind of offset data processing methods of OLED display panel, pass through
Wavelet transformation is done to offset data, gives up the detail matrices that wavelet transformation obtains, only stores the approximate matrix that wavelet transformation obtains,
It recycles the approximate matrix of storage to estimate detail matrices, reconstructs wavelet transformation, and carry out anti-wavelet transform function, retrieve benefit
Data are repaid, and then the compression and decompression to offset data may be implemented, the system memory space that compressed offset data occupies
Greatly reduce, the time defeated so as to shorten production lines, burning data, and compressed data have fixed compression ratio,
And the error that offset data and former offset data are retrieved after decompressing is minimum, does not influence the display product of OLED display panel
Matter.
Detailed description of the invention
For further understanding of the features and technical contents of the present invention, it please refers to below in connection with of the invention detailed
Illustrate and attached drawing, however, the drawings only provide reference and explanation, is not intended to limit the present invention.
In attached drawing,
Fig. 1 is the flow chart of the offset data processing method of OLED display panel of the invention；
Fig. 2 is the image change process of the first embodiment of the offset data processing method of OLED display panel of the invention
Figure.
Specific embodiment
Further to illustrate technological means and its effect adopted by the present invention, below in conjunction with preferred implementation of the invention
Example and its attached drawing are described in detail.
Referring to Fig. 1, the present invention provides a kind of offset data processing method of OLED display panel, include the following steps:
Step 1, the offset data for obtaining OLED display panel.
Specifically, in the step 1 OLED display panel offset data be picture format data.
Step 2 does n grades of wavelet transformations to the offset data of the OLED display panel, and the n grade for obtaining the offset data is close
It is positive integer like matrix, n grades of level detail matrixes, n grades of vertical detail matrixes and n grades of diagonal line detail matrices, n.
The n grades of wavelet transform procedure is first to carry out wavelet transformation to offset data, obtains 1 grade of approximate matrix, 1 grade of level
Detail matrices, 1 grade of vertical detail matrix and 1 grade of diagonal line detail matrices, then wavelet transformation is carried out to 1 grade of approximate matrix and obtains 2
Grade approximate matrix, 2 grades of level detail matrixes, 2 grades of vertical detail matrixes and 2 grades of diagonal line detail matrices, then to 2 grades of approximate squares
Battle array carries out wavelet transformation and obtains 3 grades of approximate matrixs, 3 grades of level detail matrixes, 3 grades of vertical detail matrixes and 3 grades of diagonal line details
Matrix, and so on until obtain n grades of approximate matrixs, n grades of level detail matrixes, n grades of vertical detail matrixes and n grades of diagonal lines
Detail matrices.
Step 3, the n grade approximate matrix for saving the offset data, give up n grades of level detail matrixes, n grades of vertical detail squares
Battle array and n grades of diagonal line detail matrices, to compress the offset data of the OLED display panel.
Specifically, the compression ratio of the offset data of the OLED display panel is 1/4n, such as: 1 grade of wavelet transformation is
1/4,2 grade of wavelet transformation is 1/16.
Step 4, selected n grades of approximate matrixs are data to be decompressed, if m is count parameter, and m are assigned a value of 0.
Specifically, the count parameter is for recording decompression number, to the number compressed through n grades of wavelet transformations when data decompression
According to, it should there is n times decompression procedure, decompression procedure is the operation of following step 5 to step 7.
Step 5, treat decompression data do 1 grade of wavelet transformation, obtain level detail matrix, the number to be decompressed of data to be decompressed
According to vertical detail matrix and data to be decompressed diagonal line detail matrices.
Step 6, amplify the level detail matrix of data to be decompressed, the vertical detail matrix of data to be decompressed and to
The diagonal line detail matrices of data are decompressed to the size of data to be decompressed.
Step 7, by the level detail matrix of amplified data to be decompressed, the vertical detail of amplified data to be decompressed
Matrix, amplified data to be decompressed diagonal line detail matrices merge with data to be decompressed and reconstruct and carry out anti-wavelet transformation,
Data after being decompressed.
Step 8 makes m=m+1, judges whether m is equal with n, if equal, terminates, and data are to decompress after current decompression
The offset data of OLED display panel afterwards, if differing, data are data to be decompressed after selecting current decompression, and return to step
Rapid 5.
Specifically, referring to Fig. 2, in the first embodiment of the present invention, doing 1 grade of wavelet transformation to the offset data,
The detailed process of wavelet transformation are as follows:
Firstly, selected a pair of wavelet basis bottom, the wavelet basis bottom includes: morther wavelet vector and scaling vector, the scale
The frequency of vector is lower than the morther wavelet vector；
Then the offset data is filtered with the scaling vector along line direction, and down-sampling is carried out to column, under
Retain a column in every two column when sampling, obtains the first coefficient matrix；With the morther wavelet vector to the offset data along row side
Down-sampling is carried out to being filtered, and to column, is retained a column in when down-sampling every two column, is obtained the second coefficient matrix；
First coefficient matrix is filtered with the scaling vector along column direction finally, and row adopt
Sample, when down-sampling, every two row retained a line, obtained the approximate matrix of the offset data；With the morther wavelet vector to described first
Coefficient matrix is filtered along column direction, and carries out down-sampling to row, and when down-sampling, every two row retained a line, obtained offset data
Level detail matrix；Second coefficient matrix is filtered along column direction with the scaling vector, and row is carried out down
Sampling, when down-sampling, every two row retained a line, obtained the vertical detail matrix of offset data；The morther wavelet vector is to described
Two coefficient matrixes are filtered along column direction, and carry out down-sampling to row, and when down-sampling, every two row retained a line, obtained compensation number
According to diagonal line detail matrices.
When preservation, give up to fall the level detail matrix, vertical detail matrix and diagonal line detail matrices of the offset data,
The approximate matrix of the offset data is only saved, to achieve the purpose that compression compensation data.
Further, when the OLED display panel is needed using offset data, system calls the approximate matrix saved
It is decompressed, firstly, the approximate matrix that selected 1 grade of wavelet transformation obtains is that data to be decompressed do 1 grade of wavelet transformation, obtains approximation
The diagonal line detail matrices of the level detail matrix of matrix, the vertical detail matrix of approximate matrix and approximate matrix, then amplify
The diagonal line detail matrices of the level detail matrix of the approximate matrix, the vertical detail matrix of approximate matrix and approximate matrix
To the size of approximate matrix, namely by the level detail matrix of approximate matrix, the vertical detail matrix and approximate square of approximate matrix
The equal quadruplication of diagonal line detail matrices of battle array, specific amplification method can choose interpolation amplification, preferably bilinear interpolation, most
Afterwards, by the level detail matrix of amplified approximate matrix, the vertical detail matrix, amplified close of amplified approximate matrix
Diagonal line detail matrices like matrix merge reconstruct with approximate matrix and carry out anti-wavelet transformation, the compensation number after being decompressed
According to.
Specifically, the detailed process of anti-wavelet transformation in this first embodiment are as follows:
Reconstruct wavelet vectors corresponding with the wavelet basis bottom selected a pair of first, the reconstruct wavelet vectors include: the
One reconstruct wavelet vectors and the second reconstruct wavelet vectors, the frequency of the first reconstruct wavelet vectors is lower than the second reconstruct small echo
Vector；
Then the vertical detail matrix to the amplified approximate matrix and approximate matrix are carried out along line direction respectively
Up-sampling, every two are in the ranks inserted into a line zero when up-sampling, with the first reconstruct wavelet vectors to described after up-sampling
The vertical detail matrix of amplified approximate matrix and the approximate matrix after up-sampling are filtered along column direction respectively
Wave, and the filtered results added of the two is obtained into the first reconstruction coefficients matrix；
Then pair of the level detail matrix to the amplified approximate matrix and amplified approximate matrix respectively
Linea angulata detail matrices are up-sampled along line direction, and every two are in the ranks inserted into a line zero when up-sampling, with the second reconstruct small echo
Level detail matrix of the vector to the amplified approximate matrix after up-sampling and the amplification after up-sampling
The diagonal line detail matrices of approximate matrix afterwards are filtered along column direction respectively, and the filtered results added of the two is obtained
Second reconstruction coefficients matrix；
Finally the first reconstruction coefficients matrix and the second reconstruction coefficients matrix are up-sampled respectively, when up-sampling
Every two are in the ranks inserted into a line zero, with the first reconstruct wavelet vectors to the first reconstruction coefficients matrix after up-sampling along line direction
It is filtered, the second reconstruction coefficients matrix after up-sampling is filtered along line direction with the second reconstruct wavelet vectors,
And the offset data of the OLED display panel after being decompressed the filtered results added of the two.
In the first embodiment of the present invention, the offset data after comparing raw compensation data and decompression, root-mean-square error
It is 1.64, root-mean-square error/original image average value is equal to 3.24%, it is seen that the offset data after raw compensation data and decompression is very
It is close, compensation effect will not be had an impact substantially.
In addition, the present invention can also do multilevel wavelet to offset data other than doing 1 grade of wavelet transformation to the offset data
Transformation, such as: in the second embodiment of the present invention, 3 grades of wavelet transformations, 3 grades of wavelet transformations are done to the offset data
Process is first to carry out wavelet transformation to offset data, obtains 1 grade of approximate matrix, 1 grade of level detail matrix, 1 grade of vertical detail square
Battle array and 1 grade of diagonal line detail matrices, then wavelet transformation is carried out to 1 grade of approximate matrix and obtains 2 grades of approximate matrixs, 2 grades of level details
Matrix, 2 grades of vertical detail matrixes and 2 grades of diagonal line detail matrices, then wavelet transformation is carried out to 2 grades of approximate matrixs and obtains 3 grades closely
Like matrix, 3 grades of level detail matrixes, 3 grades of vertical detail matrixes and 3 grades of diagonal line detail matrices, the method for wavelet transformations at different levels
It is identical as the small wave converting method in first embodiment, it is only repeated as many times, is no longer described in detail herein.And when decompressing, then first
3 grades of approximate matrixs are decompressed, 2 grades of approximate matrixs after being decompressed, then 2 grades of approximate matrixs are decompressed, 1 grade of approximation after being decompressed
Matrix, finally decompress 1 grade of approximate matrix, the offset data of the OLED display panel after decompress, specific decompressing method and
First embodiment is identical, is only repeated as many times, is no longer described in detail herein.
In conclusion the present invention provides a kind of offset data processing method of OLED display panel, by compensation number
According to wavelet transformation is done, give up the detail matrices that wavelet transformation obtains, only store the approximate matrix that wavelet transformation obtains, recycling is deposited
The approximate matrix of storage estimates detail matrices, reconstructs wavelet transformation, and carry out anti-wavelet transform function, retrieves offset data,
The compression and decompression to offset data may be implemented in turn, the system memory space that compressed offset data occupies subtracts significantly
It is few, the time defeated so as to shorten production lines, burning data, and compressed data have fixed compression ratio, and solve
The error that offset data and former offset data are retrieved after pressure is minimum, does not influence the display quality of OLED display panel.
The above for those of ordinary skill in the art can according to the technique and scheme of the present invention and technology
Other various corresponding changes and modifications are made in design, and all these change and modification all should belong to the claims in the present invention
Protection scope.
Claims (8)
1. a kind of offset data processing method of OLED display panel, which comprises the steps of:
Step 1, the offset data for obtaining OLED display panel；
Step 2 does n grades of wavelet transformations to the offset data of the OLED display panel, obtains the approximate square of n grade of the offset data
Battle array, n grades of level detail matrixes, n grades of vertical detail matrixes and n grades of diagonal line detail matrices, n are positive integer；
Step 3, the n grade approximate matrix for saving the offset data, give up n grades of level detail matrixes, n grades of vertical detail matrixes and n
Grade diagonal line detail matrices, to compress the offset data of the OLED display panel；
Step 4, selected n grades of approximate matrixs are data to be decompressed, if m is count parameter, and m are assigned a value of 0；
Step 5 treats decompression data and does 1 grade of wavelet transformation, obtains the level detail matrixes of data to be decompressed, data to be decompressed
The diagonal line detail matrices of vertical detail matrix and data to be decompressed；
Step 6 amplifies the level detail matrix of data to be decompressed, the vertical detail matrix of data to be decompressed and wait decompress
The size of the diagonal line detail matrices of data extremely data to be decompressed；
Step 7, by the level detail matrix of amplified data to be decompressed, the vertical detail square of amplified data to be decompressed
Battle array, the diagonal line detail matrices of amplified data to be decompressed merge with data to be decompressed to be reconstructed and carries out anti-wavelet transformation, is obtained
Data after to decompression；
Step 8 makes m=m+1, judges whether m is equal with n, if equal, terminates, and data are after decompressing after current decompression
The offset data of OLED display panel, if differing, selecting data after current decompression is data to be decompressed, and return step 5.
2. the offset data processing method of OLED display panel as described in claim 1, which is characterized in that the step 2 and
The method of wavelet transformation is carried out in step 5 are as follows:
Firstly, selected a pair of wavelet basis bottom, the wavelet basis bottom includes: morther wavelet vector and scaling vector, the scaling vector
Frequency be lower than the morther wavelet vector；
Then data to be transformed are filtered with the scaling vector along line direction, and down-sampling is carried out to column, when down-sampling
Retain a column in every two column, obtains the first coefficient matrix；With the morther wavelet vector to the data to be transformed along line direction into
Row filtering, and carry out down-sampling to column retains a column in when down-sampling every two column, obtains the second coefficient matrix；
First coefficient matrix is filtered with the scaling vector along column direction finally, and down-sampling is carried out to row, under
Every two row retains a line when sampling, obtains the approximate matrix of the data to be transformed；
First coefficient matrix is filtered along column direction with the morther wavelet vector, and to row carry out down-sampling, under adopt
Every two row retains a line when sample, obtains the level detail matrix of data to be transformed；
Second coefficient matrix is filtered along column direction with the scaling vector, and down-sampling, down-sampling are carried out to row
When every two row retain a line, obtain the vertical detail matrix of data to be transformed；
Second coefficient matrix is filtered along column direction with the morther wavelet vector, and to row carry out down-sampling, under adopt
Every two row retains a line when sample, obtains the diagonal line detail matrices of data to be transformed.
3. the offset data processing method of OLED display panel as claimed in claim 2, which is characterized in that in the step 7
The method of anti-wavelet transformation are as follows:
A pair of reconstruct wavelet vectors corresponding with the wavelet basis bottom selected first, the reconstruct wavelet vectors include: the first weight
Structure wavelet vectors and the second reconstruct wavelet vectors, the frequency of the first reconstruct wavelet vectors is lower than the second reconstruct wavelet vectors；
Then the vertical detail matrix to the amplified data to be decompressed and data to be decompressed are carried out along line direction respectively
Up-sampling, every two are in the ranks inserted into a line zero when up-sampling, with the first reconstruct wavelet vectors to described after up-sampling
The amplified vertical detail matrix wait decompress data and the data to be decompressed after up-sampling are carried out along column direction respectively
Filtering, and the filtered results added of the two is obtained into the first reconstruction coefficients matrix；
Then the level detail matrix to the amplified data to be decompressed and pair of amplified data to be decompressed respectively
Linea angulata detail matrices are up-sampled along line direction, and every two are in the ranks inserted into a line zero when up-sampling, with the second reconstruct small echo
Vector is to the amplified level detail matrix wait decompress data after up-sampling and putting after up-sampling
The diagonal line detail matrices of data to be decompressed after big are filtered along column direction respectively, and by the filtered results added of the two
Obtain the second reconstruction coefficients matrix；
Finally the first reconstruction coefficients matrix and the second heavy industry coefficient matrix are up-sampled respectively, every two when up-sampling
It is in the ranks inserted into a line zero, the first reconstruction coefficients matrix after up-sampling is carried out along line direction with the first reconstruct wavelet vectors
Filtering is filtered the second reconstruction coefficients matrix after up-sampling along line direction with the second reconstruct wavelet vectors, and will
Data after the filtered results added of the two is decompressed.
4. the offset data processing method of OLED display panel as described in claim 1, which is characterized in that in the step 5
By the level detail matrix of the data to be decompressed, the vertical detail matrix of data to be decompressed and wait solve by way of interpolation
Press the diagonal line detail matrices quadruplication of data.
5. the offset data processing method of OLED display panel as claimed in claim 4, which is characterized in that the step 5 is adopted
Interpolation method is bilinear interpolation.
6. the offset data processing method of OLED display panel as described in claim 1, which is characterized in that in the step 1
The offset data of OLED display panel is the data of picture format.
7. the offset data processing method of OLED display panel as described in claim 1, which is characterized in that the OLED is shown
The compression ratio of the offset data of panel is 1/4n。
8. the offset data processing method of OLED display panel as claimed in claim 7, which is characterized in that in the step 2
Level-one wavelet transformation is carried out to offset data, the compression ratio of the offset data of the OLED display panel is 1/4.
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| CN107294538B (en) * | 2017-06-09 | 2020-09-01 | 深圳市华星光电半导体显示技术有限公司 | Compression method and decompression method for compensation gauge of OLED display device |
| CN109767722B (en) * | 2017-11-09 | 2021-03-05 | 上海和辉光电股份有限公司 | OLED module Gamma adjusting method and device |
| US10860399B2 (en) * | 2018-03-15 | 2020-12-08 | Samsung Display Co., Ltd. | Permutation based stress profile compression |
| US10515612B2 (en) * | 2018-03-26 | 2019-12-24 | Samsung Display Co., Ltd. | Transformation based stress profile compression |
| CN110176210B (en) | 2018-07-27 | 2021-04-27 | 京东方科技集团股份有限公司 | Display driving method, compression and decompression method, display driving device, compression and decompression device, display device and storage medium |
| CN109166511B (en) * | 2018-09-03 | 2021-07-20 | Tcl华星光电技术有限公司 | Compression method for compensating gauge of display device |
| CN109036275B (en) * | 2018-09-19 | 2020-06-19 | 京东方科技集团股份有限公司 | Mura phenomenon compensation method and device of display screen |
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