CN109859700A - A kind of data processing method and data processing equipment - Google Patents
A kind of data processing method and data processing equipment Download PDFInfo
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Abstract
The application provides a kind of data processing method and data processing equipment, comprising the following steps: data are converted into yuv format from rgb format；The data of the yuv format are compressed by a certain percentage；First threshold and second threshold are set, and first threshold is greater than second threshold；A pixel is chosen as current pixel point, the current compression data pixels point and surrounding pixel point are subjected to size comparison, obtain difference；It excludes difference and is greater than first threshold surrounding pixel point corresponding with second threshold is less than, remaining surrounding pixel is selected as reference image vegetarian refreshments, and the number of corresponding position is set, the corresponding position number for choosing the reference image vegetarian refreshments replaces the data of the current pixel point.
Description
Technical field
This application involves data processing method and the frameworks of data processing equipment, more particularly to the number in display field
According to processing method and data processing equipment.
Background technique
It is occupancy SRAM (Static Random- the most in the over driver (overvoltage drive, OD) of display device
Access Memory, static random access memory) module, and the size clock synchronization of SRAM (static random access memory)
The cost impact of sequence controller is very big.Over driver needs to store former frame in the design of existing sequence controller
Whole data, current picture determine final output data number according to the data check look-up table of previous picture and current picture
According to, therefore over driver is the module for most occupying SRAM, therefore, SRAM cost needed for sequence controller field is very at present
It is high.
With current HD (High Definition, high definition), FHD (Full High Definition, full HD) and UHD
For (Ultra High Definition, ultra high-definition) three kinds of resolutions, the occupied SRAM capacity of over driver is not examined
It is 26Mbit, 50Mbit, 200Mbit under the premise of considering compression, accounts for entire chip and design very big ratio, therefore current industry
Inside generally using data compression technique in the design of over driver, the capacity of SRAM can be greatlyd save, with general in industry
For the three times compression used, then SRAM can reduce as original one third, HD/FHD/UHDTCON (Timer
Control Register, logic card) need SRAM capacity be reduced to 8.7Mbit/16.7Mbit/66.7Mbit, still
Over driver still occupies a large amount of SRAM, very big to the cost impact of sequence controller, can not efficiently control cost.
Summary of the invention
In order to solve the above-mentioned technical problem, the purpose of the application is, provides a kind of data processing method.In the number
According in processing method, data are converted into yuv format from rgb format, then by the data of the yuv format according to certain
Ratio is compressed, and on this basis one by one compares pixel and surrounding pixel point, excludes to be greater than first threshold and small
In the pixel of second threshold, further given threshold is decided whether according to the quantity of reference image vegetarian refreshments, until selected pixels point
Position Number replace the data of the current pixel point, make in this way compressed data technology in terms of data compression more fully,
And then with achieving the effect that more high magnification compressed data, reach the use for reducing SRAM, the mesh of the cost of control sequential controller
, meanwhile, the brightness of display picture also can be improved, improve the contrast of display picture to a certain extent.
It the purpose of the application and solves its technical problem and adopts the following technical solutions to realize.It is proposed according to the application
Data processing method, step 1: data are transformed into yuv format from rgb format, wherein Y represents brightness, and UV represents coloration,
Thus the brightness shown in data and chrominance separation are come out；Step 2: being much higher than color according to sensibility of the human eye to brightness
The characteristic of the sensibility of degree using the human eye characteristic as reference, and then determines its compression factor, such as: brightness can incite somebody to action
8bit boil down to 4bit, UV originally then can be compressed to YUV (422) with 8bit boil down to 2bit, such RGB (888), in this way
Just reach the data compression benefit of 3 multiplying powers；Step 3: on the basis of the compression of 3 haplotype data of second step, by the data of current pixel point
It is compared with the data of surrounding pixel point and obtains more than one difference as difference, exclude the difference greater than first threshold and small
In the corresponding pixel number evidence of second threshold, remaining pixel is as reference image vegetarian refreshments and corresponding Position Number is arranged, and selects
One Position Number replaces the data of the current pixel point, to achieve the effect that data compression.
In some embodiments of the present application, using the pixel in picture element matrix as basic unit, seriatim by pixel
Data and its surrounding pixel point data comparison, reference meet correlated condition reference image vegetarian refreshments number as current pixel
The compressed data of point.
In the embodiment of the application, first threshold and second threshold is arranged, wherein first threshold in the threshold value
Greater than second threshold.
In embodiments herein, first threshold is more close with the data of the reference image vegetarian refreshments within second threshold,
Therefore, the corresponding number of reference image vegetarian refreshments in the threshold value can randomly select, and replace the data of current pixel point.
In the embodiment of the application, the data of the data of current pixel point and surrounding pixel point are compared into work
Difference obtains more than one difference, when multiple differences are all larger than first threshold or respectively less than second threshold, further sets
Determine second threshold, makes quantity 1 of reference image vegetarian refreshments or more.
In the embodiment of the application, the relative position of the corresponding reference image vegetarian refreshments of the current pixel point is not
Together, different Position Numbers is set to it.
In the embodiment of the application, the number for the surrounding pixel point that different pixels is possessed may be identical,
May be different, when the quantity of the surrounding pixel point is less than a certain limit value, the data of current pixel point will be kept.
In the embodiment of the application, as shown in figure 3, reference pixel point is located at left side, a left side for the current pixel point
Top and top, but not limited to this, specific location according to specific embodiment the case where set.
In the embodiment of the application, the number of surrounding pixel point is 3, positioned at the left side of current pixel point, top and
Upper left side, but not limited to this, the number of different embodiment specified pixel points can be set as the case may be with position.
In the embodiment of the application, the number of the reference image vegetarian refreshments of current pixel point is less than of surrounding pixel point
Number, reference image vegetarian refreshments be 1, surrounding pixel point be 3, but not limited to this, different embodiments according to the actual situation depending on.
In the embodiment of the application, the data of current pixel point replaced the number of a reference image vegetarian refreshments,
When decompression, the data numbered on corresponding pixel pass to the current pixel point as decompression data.
In the embodiment of the application, a number when pixel is as reference image vegetarian refreshments is cited as current pixel point
Compressed data, the size of data of the reference image vegetarian refreshments will be fixed, and its it is corresponding number be only limitted to by the current pixel
Cited in point.
In the embodiment of the application, current pixel point quotes the number of a reference image vegetarian refreshments as its compressed data
When, data, which are not used in, to be compared, replaces.
In the embodiment of the application, the difference between the reference pixel data and current pixel data is all larger than
When one threshold value or respectively less than second threshold, second threshold is further set, makes number 1 of reference image vegetarian refreshments or more, and right
Its setting position number.
In the embodiment of the application, the threshold value is still unable to satisfy reference after further setting second threshold
When the number of pixel, a pixel is separately selected as data standard, and is quoted a particular number and replaced the current pixel point
Data, decompression data of the value of the data of the data standard pixel as the current location.
In the embodiment of the application, the number of the current pixel point is cited and is, the data of the current pixel point
It remains unchanged.
In the embodiment of the application, use the number an of n-bit as number, wherein n can be 2,3,4, but not
It is limited to this.
In the embodiment of the application, use the number of a n-bit size as number, the number of pixel is less than etc.
In 2^n；In general, increasing the number of reference image vegetarian refreshments in a sense when the number of surrounding pixel point is 2^n, having
Bring error is replaced conducive to reducing.
The purpose of the application, which also resides in, provides a kind of data processing equipment, including, data conversion module, by original RGB
The data of format are converted to the data of yuv format；Data compressing module, to the data of the yuv format according to certain ratio
Example is compressed；And data comparison replacement module, the data of pixel and the data of surrounding pixel point are compared, are excluded
Surrounding pixel point outside threshold value randomly selects a remaining reference image vegetarian refreshments and quotes the number that its number replaces current pixel point
According to.
The application is by data processing method, on the basis of traditional three times compression, more high magnification compressed data, in real time
Effectively, it is unique consummate to be related to compress technique, has reached the SRAM capacity for reducing sequence controller, and then reach control sequential control
The effect of device cost；Meanwhile the brightness of display panel can be improved, so that the comparison of display picture can be improved to a certain extent
Degree.
Detailed description of the invention
Fig. 1 is the architecture diagram of exemplary overvoltage drive；
Fig. 2 is that the rgb format data of embodiments herein are converted to the conversion formula of yuv format data；
Fig. 3 is the data comparison schematic diagram in the embodiment of the application；
Fig. 4 is the flow chart of embodiments herein；
Fig. 5 is the data compression system schematic diagram of the embodiment of the application；
Fig. 6 is the schematic diagram of multiple reference image vegetarian refreshments of the embodiment of the application.
Specific embodiment
The explanation of following embodiment is to can be used to the particular implementation of implementation to illustrate the application with reference to additional schema
Example.The direction term that the application is previously mentioned, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outside", " side "
Deng being only the direction with reference to annexed drawings.Therefore, the direction term used be to illustrate and understand the application, rather than to
Limit the application.
Attached drawing and explanation are considered inherently illustrative, rather than restrictive.The similar list of structure in the figure
Member is to be given the same reference numerals.In addition, in order to understand and be convenient for description, the size and thickness of each component shown in the accompanying drawings are
It is arbitrarily shown, but the application is without being limited thereto.
In addition, in the description, unless explicitly described as opposite, otherwise word " comprising " will be understood as meaning to wrap
The component is included, but is not excluded for any other component.In addition, in the description, " above " means to be located at target group
Part either above or below, and be not intended to must be positioned on the top based on gravity direction.
Further to illustrate that the application is the technical means and efficacy reaching predetermined goal of the invention and being taken, below in conjunction with
Attached drawing and specific embodiment, to the data processing method and data processing system proposed according to the application, specific implementation
Mode, structure, feature and its effect, detailed description is as follows.
Fig. 1 is exemplary overvoltage drive architecture diagram.As shown in Figure 1, the in the design of existing sequence controller
Driver needs to store whole data information of former frame, and current picture is according to the data check of previous picture and current picture
Look-up table determines that final output data, over driver are the modules for most occupying SRAM, therefore current frame data
And it needs to compress data before previous frame data input buffer.
With reference to Fig. 1, the data of previous frame and the data of present frame are first passed to data compressing module 101 and data pressure respectively
Contracting module 102 is compressed, and current frame data is passed to linear cache module 108, and data compressing module 101 and 102 is completed
After data compression, compressed data is stored in frame buffer module 103 and linear cache module 104；In comparison present frame and previous frame
When data, the data of the data of frame buffer module 103 and linear cache module 104 are passed to 105 sum number of data decompression module respectively
According to decompression module 106, complete that data will be decompressed after data decompression being passed to overpressure treatment unit 107 and obtain present frame and previous frame
The data difference of comparison；The current frame data of the data difference of comparison and linear cache module is finally passed to processing unit 109
It is handled, determines final output overvoltage drive value in conjunction with current frame data.
With reference to Fig. 2, the conversion formula that rgb format data are converted to yuv format data is as follows: Y=0.30R+0.59G+
0.11B；U=0.493 (B-Y)；V=0.877 (R-Y).
Some embodiments of the present application are carried out on the basis of the compression of the three times of exemplary data, i.e., in three multiplication of voltages
Further data are handled on the basis of contracting, to further increase the effect of the data compression in process as shown in Figure 1
Benefit, to reduce the cost of the volume controlled sequence controller of SRAM.
In some embodiments of the present application, using the pixel in picture element matrix as basic unit, image is further compressed
Pixel yuv data.
In the embodiment of the present application, the reference image vegetarian refreshments is made of one or more pixel datas around；Wherein, if
The number of reference image vegetarian refreshments is 1, then is numbered 00 to the reference pixel point；If the number of reference image vegetarian refreshments is 2, right
The reference pixel point is numbered 00,01；Wherein, if the number of reference image vegetarian refreshments is 1, to three reference pixels
Point is numbered 00,01,10.
In the embodiment of the present application, the reference image vegetarian refreshments, as shown in fig. 6, for the reference image vegetarian refreshments of current pixel point
Number be greater than 4, and be less than or equal to 6 when, occupancys size be 3 bits；The number of the reference image vegetarian refreshments of current pixel point is less than 4
A, occupancy size is 2 bits.
Fig. 3 is the data comparison schematic diagram in the embodiment of the application.As shown in figure 3, one in the application is real
It applies in example, circled is current pixel point 200, and wherein M represents picture element matrix, and (i, j) indicates the position in picture element matrix, wherein
I is a nonnegative integer, represents line position of the pixel in picture element matrix and sets；J is a nonnegative integer, represents pixel in picture
Column position in prime matrix chooses upper left pixel point 201, topmost pixel point 202 and the left side of current pixel point 200
203 are used as surrounding pixel point, exclude one and are greater than first threshold and a pixel less than second threshold, remaining pixel
As reference image vegetarian refreshments, use the binary number of 2 bits as reference numeral, such as 00,01,10 etc., and reference number substitution is worked as
The data of preceding pixel point, thus can be by the data compression of a pixel to 2 bits.
In the embodiment of the application, after excluded to surrounding pixel point data, according to remaining reference pixel
O'clock a 2^n different numbers can be weaved into using the data of a n-bit, wherein comprising one for recording the volume of special circumstances
Number.
In the embodiment of the application, with reference to Fig. 3, pixel 200 is current pixel point, pixel 201,202 and 203
For surrounding pixel point；The surrounding pixel point 201,202,203 and the size of data of the current pixel point 200 are compared
It is poor to make, and obtains multiple differences, excludes the difference greater than first threshold and difference and is less than the corresponding pixel of second threshold, this
When, it is left 1 reference image vegetarian refreshments, to the number of reference image vegetarian refreshments setting corresponding position, quotes corresponding number and replace institute
State the data of current pixel point.
In the embodiment of the application, the data that the number of the current pixel point chooses the surrounding pixel point compare,
Stochastic comparison can be divided into and compared according to distance sequence.
In implementing the one of the application, the threshold value, depending on the display situation near current pixel point, currently
Refer to real-time highest display brightness and display coloration and minimum display brightness and display when showing situation near display picture
Coloration, and value of the current pixel point respectively with the value of highest display brightness and coloration, minimum display brightness and coloration compares,
Obtain first threshold and second threshold.
In present application example, first threshold is more close with the data of the reference image vegetarian refreshments within second threshold, therefore,
When the number of the reference image vegetarian refreshments is more than or equal to 2, the corresponding number of reference image vegetarian refreshments can be randomly selected, and replace current picture
The data of vegetarian refreshments；The effect for the display picture that its pixel data shows will be smoother, while also to a certain extent
Improve contrast.
In the embodiment of the application, with reference to Fig. 3, pixel 200 is current pixel point, pixel 201,202 and 203
For surrounding pixel point；The surrounding pixel point 201,202,203 and the size of data of the current pixel point 200 are compared
It is poor to make, and obtains multiple differences, when the difference is all larger than first threshold or respectively less than second threshold, then further setting second
Threshold value makes current pixel point possess at least one reference image vegetarian refreshments, and setting is numbered to reference pixel point, and quote its volume
Number replace current pixel point data.
In the embodiment of the present application, the threshold value is still unable to satisfy reference pixel after further setting second threshold
When the quantity of point, a pixel data standard value is separately selected, and number to it, quotes the data that its number replaces current pixel point,
In the embodiment of the present application, with the binary number 11 of 2 bits, solution of the pixel data standard value as current pixel point when decompression
Press data.
In the embodiment of the present application, when the number for the surrounding pixel point for being used in data comparison is less than a limit value
When, data comparison will not be carried out to surrounding pixel point and number is quoted, keep the data of the current pixel point.
In the embodiment of the application, a pixel can be made when meeting the reference conditions of other different pixels points
For reference image vegetarian refreshments, but when a pixel has been set number, and number when being cited the data for replacing pixel, the pixel
Select the reference image vegetarian refreshments for not being re-used as other pixels.
In the embodiment of the application, with reference to Fig. 3, the pixel 200 in circle is current pixel point, pixel 201,
202 and 203 be surrounding pixel point, it is assumed that reference number is as compressed data for pixel 202 therein, therefore pixel 202
Data will not be compared with current pixel point 200, the number 10 of pixel 202 will not be quoted by current pixel point 200.
In the embodiment of the application, it is assumed that the number of the surrounding pixel point of a pixel is 8, as shown in fig. 6, working as
Preceding pixel point M (i, j), when exclusion is greater than first threshold and less than second threshold surrounding pixel point, makes its remaining reference image vegetarian refreshments
Be 6, at this point, need to use 3 bits binary digit reference pixel point is numbered, such as 000,001,010,011,
100,101, in the present embodiment, the number for the reference image vegetarian refreshments that a pixel possesses is no more than 6.
In the embodiment of the application, with reference to Fig. 3, the upper left pixel 201 of current pixel point 200 and top are set
Pixel 202 and left pixel point 203 be surrounding pixel point, the position and number of pixel sets as the case may be
It is fixed.
Fig. 4 is the flow chart of embodiments herein.In embodiments herein, as shown in figure 4, first step S301:
Data are converted into yuv format from rgb format；Second step S302: the data of the yuv format are pressed by a certain percentage
Contracting；Third step S303: a pixel and surrounding pixel point are compared and obtain multiple differences as difference, the difference is excluded and is greater than
First threshold is less than the corresponding surrounding pixel point of second threshold, further chooses the corresponding position of remaining reference image vegetarian refreshments and compiles
Number replace the data of the current pixel point；If the quantity of reference image vegetarian refreshments is unsatisfactory for, second threshold is further set, in turn
The number for choosing reference image vegetarian refreshments replaces the data of current pixel point；If not meeting the quantity of reference image vegetarian refreshments still, a number is separately selected
According to standard, the data that specific number replaces current pixel point are set.The specific implementation details of the general flow of the application are as above
It states described in embodiment.
Fig. 5 is data compression system schematic diagram.With reference to Fig. 5, in the embodiment of the application, data compression system is by data
Conversion module 401, data compressing module 402 and to data than replacement module 403 form: data conversion module 401, will be original
The data of rgb format the data of yuv format are converted to according to certain formula, the coloration of pixel and brightness data are separated；
Data compressing module 402 compresses the data of the yuv format according to a certain percentage；Replacement module 403 is compared,
Pixel and surrounding pixel point are compared, after excluding the surrounding pixel point except threshold value, further choose remaining reference
The corresponding Position Number of pixel replaces the data of the current pixel point.
In the embodiment of the application, the raw RGB format of image is converted to yuv format by data conversion module 401,
Data compressing module 402 is by the brightness Y in the yuv data of a pixel by original 8bit boil down to 4bit, and coloration UV is by 8bit
Boil down to 2bit, such RGB (888) are compressed to YUV (422), thus there is the data compression benefit of 3 multiplying powers.
In the embodiment of the application, replacement module 403 is compared by multiple pictures of the data of current pixel point and surrounding
The data of vegetarian refreshments compare, and exclude to be greater than first threshold and the surrounding pixel point less than second threshold, by remaining surrounding picture
Vegetarian refreshments is as reference image vegetarian refreshments, and the reference image vegetarian refreshments has the number of corresponding position, and reference and current pixel point positional distance are most
Compressed data of the number of close reference image vegetarian refreshments as current pixel point.
In the embodiment of the application, with reference to Fig. 5, in data comparison replacement module 403, if data difference is all larger than
When first threshold or respectively less than second threshold, at this point, original surrounding pixel point will not quoted, while a pixel data mark is separately selected
Standard, and use the binary number 11 of 2 bits as the compressed data of current pixel point, when decompression, the pixel data standard
Decompression data as current pixel point.
In the embodiment of the application, with reference to Fig. 5, in data comparison replacement module 403, surrounding pixel point data is poor
Value meets between first threshold and second threshold, if reference number is used as number after compression to some original reference image vegetarian refreshments
According to then the pixel is not replaced.
In the technical solution of the application, the data compression is on original 3 multiplying power data compression benefit basis enterprising one
Step completes data compression, and then reduces image data to the occupancy of SRAM, effectively achieves data compression effects.
In some embodiments, the application data compression scheme is, for example, liquid crystal display panel for display device, so not
It is limited to this, also can is OLED (Organic Light-Emitting Diode, Organic Light Emitting Diode) display panel, QLED
(Quantum Dot Light Emitting Diodes, light emitting diode with quantum dots) display panel, plasma display panel
Deng being also applied to other non-display fields.
" in some embodiments " and " in various embodiments " terms are used repeatedly etc..The term is not usually
Refer to identical embodiment；But it may also mean that identical embodiment.The words such as "comprising", " having " and " comprising " are synonymous
Word, unless its context meaning shows other meanings.
The above is only embodiments herein, not makes any form of restriction to the application, although the application
It is disclosed above with specific embodiment, however it is not limited to the application, any person skilled in the art, not
It is detached within the scope of technical scheme, when the technology contents using the disclosure above make a little change or are modified to equivalent change
The equivalent embodiment of change, but all contents without departing from technical scheme, the technical spirit according to the application is to the above reality
Any simple modification, equivalent change and modification made by example are applied, in the range of still falling within technical scheme.
Claims (10)
1. a kind of data processing method, which comprises the following steps:
Picture data is converted into yuv format from rgb format, wherein the data of the yuv format carry out data by a certain percentage
Compression；
First threshold and second threshold are set, and the first threshold is greater than the second threshold；
A pixel is chosen as current pixel point, and one by one carries out the current pixel point and the data of its surrounding pixel point
To difference is compared to, difference is obtained；
The difference surrounding pixel point corresponding with second threshold is less than greater than first threshold is excluded, by the remaining week
Pixel is enclosed as reference image vegetarian refreshments, and sets corresponding Position Number, and therefrom selects the number that a number replaces current pixel point
According to being compressed.
2. data processing method as described in claim 1, which is characterized in that the current pixel point and its surrounding pixel point carry out
It, need to be further to first threshold or second threshold when difference is all larger than first threshold or respectively less than second threshold to difference is compared to
Setting, makes the current pixel point have more than one reference image vegetarian refreshments.
3. threshold value as claimed in claim 2 is still unable to satisfy the quantity of reference image vegetarian refreshments after further setting second threshold,
A data standard is separately selected, and its setting position is numbered, quotes the data that the Position Number replaces current pixel point.
4. data processing method as described in claim 1, which is characterized in that when comparing judgement, the current pixel
The Position Number of point has been cited, and keeps the data of current pixel point.
5. data processing method as described in claim 1, which is characterized in that when the surrounding picture for being used in data comparison
When the number of vegetarian refreshments is less than a limit value, data comparison will not be carried out to surrounding pixel point and number is quoted, keep described current
The data of pixel.
6. data processing method as described in claim 1, which is characterized in that described in cited in the current pixel point
The data of the corresponding reference image vegetarian refreshments of the Position Number are replaced the data of the current pixel point by Position Number.
7. data processing method as described in claim 1, which is characterized in that the reference image vegetarian refreshments, for current pixel point
The number of reference image vegetarian refreshments be greater than 4, and when being less than or equal to 6, it is 3 bits that the Position Number, which occupies size,；Current picture
The number of the reference image vegetarian refreshments of vegetarian refreshments is less than 4, and it is 2 bits that the Position Number, which occupies size,.
8. a kind of data processing equipment characterized by comprising
The data of original rgb format are converted to the data of yuv format by data conversion module；
Data compressing module compresses the data of the yuv format according to a certain percentage；
Replacement module is compared, the data of the current compression data of the pixel and its surrounding pixel point are compared, are arranged
It removes, chooses the data that the corresponding Position Number of the reference image vegetarian refreshments replaces the current pixel point.
9. data processing equipment as claimed in claim 8, which is characterized in that the data conversion module is by data from rgb format
It is converted into yuv format, data compressing module compresses the data of the yuv format by a certain percentage, compares replacement module
Pixel and surrounding pixel point are compared and make poor, difference is obtained, excludes the difference and be greater than first threshold or less than second
The surrounding pixel point of threshold value further chooses the corresponding Position Number of remaining reference image vegetarian refreshments and replaces the current pixel point
Data.
10. a kind of data processing method, which comprises the following steps:
Data are converted into yuv format from rgb format；
The data of the yuv format are compressed according to a certain percentage；
Pixel and its peripheral location pixel are compared to obtain difference, difference is excluded and is greater than first threshold or less than second
After the pixel of threshold value, the number of corresponding position is selected as reference image vegetarian refreshments and set to the remaining surrounding pixel, selects one
Number replaces the data of the current pixel point；
In the reference image vegetarian refreshments, when the difference between the reference pixel data and current pixel data is all larger than the first threshold
When value or respectively less than second threshold, a pixel is separately selected as data standard and with a particular number and replaces the current pixel
The data of point.
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