CN108735144A - A kind of non-point-by-point acquisition correction method of LED display - Google Patents
A kind of non-point-by-point acquisition correction method of LED display Download PDFInfo
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- CN108735144A CN108735144A CN201810504426.9A CN201810504426A CN108735144A CN 108735144 A CN108735144 A CN 108735144A CN 201810504426 A CN201810504426 A CN 201810504426A CN 108735144 A CN108735144 A CN 108735144A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
Abstract
The present invention relates to a kind of non-point-by-point acquisition correction method of LED display, LED display is divided into the basic unit of multiple m × n-pixels by this method, and the whole light tone degrees of data of each basic unit progress is acquired and corrected；LED display can also be divided into the basic unit of multiple m × n-pixels by this method first, whole light tone degrees of data acquisition and correction are carried out to each basic unit, then LED display is divided into the display area of multiple M × N number of basic unit again, whole light tone degrees of data acquisition and correction are carried out to each display area.Acquisition correction efficiency is improved under the premise of not influencing display effect.
Description
Technical field：
The invention belongs to dot matrix display technical fields, are related to a kind of bright chroma acquisition correction side of dot matrix display
Method.
Background technology：
Current dot matrix display is all made of the dot matrix of pixel.Due in pixel production process individual difference, as
Bright, the coloration of element are typically inconsistent, so needing bright, the chromaticity coordinate agreed by bright, chromaticity correction.It is this
What acquisition and correction bright, coloration is inconsistent was typically carried out by pixel point by point, that is, for each pixel on screen
The correction that bright, coloration acquires and carries out unification point by point is all carried out, achievees the effect that whole screen is bright, coloration is consistent.As pixel is close
The increase of degree, the pixel being corrected are more and more, also higher and higher to the resolution requirement of correction camera.
Invention content：
It is adopted point by point the technical problem to be solved in the present invention is to provide a kind of LED display suitable for high density display screen is non-
Collect bearing calibration, this method improves acquisition correction efficiency under the premise of not influencing display effect.
In order to solve the above-mentioned technical problem, the non-point-by-point acquisition correction method of LED display of the invention uses following two kinds
Technical solution.
Technical solution one
The non-point-by-point acquisition correction method of LED display of the present invention is as follows：LED display is divided into multiple m × n-pixels
Basic unit, m, n are respectively the number of lines of pixels and columns of basic unit；Whole light tone degrees of data is carried out to each basic unit to adopt
Collection；If i-th of basic unit entirety light tone degrees of data of acquisition is di, each basic unit entirety light tone degrees of data after correction is equal
For d0, the light tone degrees of data of any pixel j is d in the basic unitij, then the light tone degrees of data d after the pixel correctionij_0=d0/
di。
The method being acquired to each basic unit entirety light tone degrees of data is as follows：Interlacing is lighted successively every row basic unit
Red, green, blue LED chip, and whole light tone degrees of data acquisition is carried out to each basic unit；Then after the same method to it
Remaining basic unit carries out whole light tone degrees of data acquisition.
Technical solution two
The non-point-by-point acquisition correction method of LED display of the present invention is as follows：LED display is divided into multiple m × n pictures first
The basic unit of element, m, n are respectively the number of lines of pixels and columns of basic unit；Then LED display is divided into multiple M × N again
The display area of a basic unit, M, N are respectively the line number and columns of basic unit in display area；To each basic unit into
Row entirety light tone degrees of data acquisition；If i-th of basic unit entirety light tone degrees of data of acquisition is di, each substantially single after correction
First entirety light tone degrees of data is d0, the light tone degrees of data of any pixel j is d in the basic unitij, then after the pixel correction
Light tone degrees of data dij_0=d0/di；Then whole light tone degrees of data acquisition is carried out to each display area again；If p-th of acquisition is aobvious
Show that region entirety light tone degrees of data is Dp, each display area entirety light tone degrees of data after correction is D0, appoint in the display area
The light tone degrees of data of one pixel q is Dpq, then the light tone degrees of data D after the pixel correctionpq_0=D0/Dp。
The method being acquired to each basic unit entirety light tone degrees of data is as follows：Interlacing is lighted successively every row basic unit
Red, green, blue LED chip, and its whole light tone degrees of data is acquired；Then substantially single to other after the same method
First entirety light tone degrees of data is acquired.
The method that whole light tone degrees of data acquisition is carried out to each display area is as follows：Interlacing is lighted successively every row display area
Red, green, blue LED chip, and its whole light tone degrees of data is acquired；Then after the same method to other viewing areas
Domain entirety light tone degrees of data is acquired.
The pixel density of high density display screen is higher and higher, has reached and has been more than observer's regarding on viewing distance
At this moment the degree for feeling resolution ratio has been not necessarily to display screen acquire and correct point by point.Pixel was produced in early period
Processing is all classified according to brightness, wavelength (chromaticity coordinates) in journey.For of a sort lamp bead, luminance deviation is usual
Within ± 10%；Wavelength offset is usually within 1nm.It can be considered that the maximum deviation of the close pixel of display screen is above-mentioned
Within deviation.
The human eye vision resolution ratio of ordinary people is 1 ', i.e., each pixel human eye that subtense angle is less than in 1 ' range is to differentiate not
It opens.Such as it is 1 meter of viewing distance is outer, human eye can differentiate minimum pixel spacing：
Tan1 ' × 1000mm=0.3mm.The distance that usual people watch display screen is much larger than 4 meters, for pel spacing
The adjacent pixel of 1mm can be considered as a pixel.And the pel spacing of current display screen is sent out to the direction less than 1mm
Exhibition.Ordinary human cannot be distinguished from adjacent pixel on viewing distance in this way.In addition aforementioned close pixel intensity deviation is 20%
Within, the luminance difference of original adjacent pixel is also little.In this way factors determine, it is not necessary that for display screen matrix carry out by
The gamma correction of a pixel.For coloration and it is same, It is not necessary to carry out the coloration school of individual element for display screen matrix
Just.It carries out pointwise correction again at this time and only increases technical difficulty, do not obtain real earning.The present invention makees M × N pixels
Whole bright chroma acquisition and correction are carried out to it for basic unit, and acquisition correction is improved under the premise of not influencing display effect
Efficiency.
Description of the drawings
Invention is further described in detail with reference to the accompanying drawings and detailed description.
Fig. 1 is non-point-by-point 1 schematic diagram of acquisition correction embodiment of the method for LED display of the present invention.
Fig. 2 is non-point-by-point 2 schematic diagram of acquisition correction embodiment of the method for LED display of the present invention.
Fig. 3 is non-point-by-point 3 schematic diagram of acquisition correction embodiment of the method for LED display of the present invention.
Specific implementation mode
Embodiment 1：
As shown in Figure 1, the non-point-by-point acquisition correction method of LED display of the present invention is as follows：LED display 1 is divided into more
The basic unit 2 of a 2 × 2 pixel, i.e., the line number of the pixel 3 of basic unit and columns are 2；Light odd-numbered line successively first
The red, green, blue LED chip of the basic unit of odd column and even number line even column, and these basic units are carried out using camera 4
Whole light tone degrees of data acquisition；Then the red, green, blue of the basic unit of odd-numbered line even column and even number line odd column is lighted successively
LED chip carries out whole light tone degrees of data acquisition to these basic units；If i-th of basic unit entirety bright chroma of acquisition
Data are di, each basic unit entirety bright chroma after correction is d0, the light tone degrees of data of any pixel j in the basic unit
For dij, then the light tone degrees of data d after the pixel correctionij_0=d0/di。
The entire LED display data collection capacity of the present embodiment is reduced to original 1/4, is needed simultaneously for 4 resolution ratio of camera
It asks and is also down to original 1/4.
Embodiment 2：
As shown in Fig. 2, the non-point-by-point acquisition correction method of LED display of the present invention is as follows：LED display 1 is divided into more
The basic unit 2 of a 3 × 4 pixel, the i.e. line number of the pixel 3 of basic unit are 3, columns 4；Light odd-numbered line idol successively first
The red, green, blue LED chip of ordered series of numbers and even number line odd column basic unit, and entirety is carried out to these basic units using camera 4
Light tone degrees of data acquires；Then the red, green, blue LED core of odd-numbered line odd column and even number line even column basic unit is lighted successively
Piece carries out whole light tone degrees of data acquisition to these basic units；If i-th of basic unit entirety light tone degrees of data is di, school
Each basic unit entirety bright chroma after just is d0, the light tone degrees of data of any pixel is d in the basic unitij, then the picture
Light tone degrees of data d after element correctionij_0=d0/di。
The entire LED display data collection capacity of the present embodiment is few to original 1/12, simultaneously for 4 resolution requirements of camera
Also it is down to original 1/4 × 1/3.
Embodiment 3：
The non-point-by-point acquisition correction method of LED display of the present invention is as follows：LED display is divided into multiple m × n pictures first
The basic unit of element, m, n are respectively the number of lines of pixels and columns of basic unit；Then LED display is divided into multiple M × N again
The display area of a basic unit, M, N are respectively the line number and columns of basic unit in display area；To each basic unit into
Row entirety light tone degrees of data acquisition；If i-th of basic unit entirety light tone degrees of data is di, each basic unit entirety after correction
Bright chroma is d0, the light tone degrees of data of any pixel is d in the basic unitij, then the light tone degrees of data after the pixel correction
dij_0=d0/di；Then whole light tone degrees of data acquisition is carried out to each display area again；If p-th of display area entirety bright chroma
Data are Dp, each display area entirety bright chroma after correction is D0, the light tone degrees of data of any pixel is in the display area
Dpq, then the light tone degrees of data D after the pixel correctionpq_0=D0/Dp。
The method being acquired to each basic unit entirety light tone degrees of data is as follows：Light odd-numbered line odd column successively first
With the red, green, blue LED chip of even number line even column basic unit, and these whole light tone degrees of data are adopted using camera 4
Collection；Then the red, green, blue LED chip of odd-numbered line even column and even number line odd column basic unit is lighted successively, and uses camera
4 pairs of these whole light tone degrees of data are acquired.
The method that whole light tone degrees of data acquisition is carried out to each display area is as follows：Odd-numbered line odd column even number is lighted successively
The red, green, blue LED chip of row even column display area, and these display area entirety light tone degrees of data are acquired；Then
The red, green, blue LED chip of odd-numbered line even column and even number line odd column display area is lighted successively, and to these display areas
Whole light tone degrees of data is acquired.
The present invention is not limited to the above embodiments, can also acquire the whole light tone number of degrees of basic unit and display area one by one
According to, or other modes is used to be acquired.When display screen matrix line number cannot be divided exactly by m or M or display screen matrix arranges
When number cannot be divided exactly by n or N, edge pixel is without correction.
Claims (5)
1. a kind of non-point-by-point acquisition correction method of LED display, it is characterised in that this method is as follows：LED display is divided into more
The basic unit of a m × n-pixel, m, n are respectively the number of lines of pixels and columns of basic unit；Each basic unit is carried out whole bright
Chroma data acquires；If i-th of basic unit entirety light tone degrees of data of acquisition is di, each basic unit after correction is integrally bright
Chroma data is d0, the light tone degrees of data of any pixel j is d in the basic unitij, then the light tone number of degrees after the pixel correction
According to dij_0=d0/di。
2. the non-point-by-point acquisition correction method of LED display according to claim 1, it is characterised in that whole to each basic unit
The method that body light tone degrees of data is acquired is as follows：Light successively interlacing every row basic unit red, green, blue LED chip, and it is right
Each basic unit carries out whole light tone degrees of data acquisition；Then whole light tone is carried out to remaining basic unit after the same method
Degrees of data acquires.
3. a kind of non-point-by-point acquisition correction method of LED display, it is characterised in that this method is as follows：First by LED display point
For the basic unit of multiple m × n-pixels, m, n are respectively the number of lines of pixels and columns of basic unit；Then again by LED display
It is divided into the display area of multiple M × N number of basic unit, M, N are respectively the line number and columns of basic unit in display area；To each
A basic unit carries out whole light tone degrees of data acquisition；If i-th of basic unit entirety light tone degrees of data of acquisition is di, correction
Each basic unit entirety light tone degrees of data afterwards is d0, the light tone degrees of data of any pixel j is d in the basic unitij, then should
Light tone degrees of data d after pixel correctionij_0=d0/di；Then whole light tone degrees of data acquisition is carried out to each display area again；If
P-th of display area entirety light tone degrees of data of acquisition is Dp, each display area entirety light tone degrees of data after correction is D0,
The light tone degrees of data of any pixel q is D in the display areapq, then the light tone degrees of data D after the pixel correctionpq_0=D0/Dp。
4. the non-point-by-point acquisition correction method of LED display according to claim 3, it is characterised in that whole to each basic unit
The method that body light tone degrees of data is acquired is as follows：Light successively interlacing every row basic unit red, green, blue LED chip, and it is right
Its whole light tone degrees of data is acquired；Then other basic unit entirety light tone degrees of data are adopted after the same method
Collection.
5. the non-point-by-point acquisition correction method of LED display according to claim 3 or 4, it is characterised in that each viewing area
The method that domain carries out whole light tone degrees of data acquisition is as follows：Light successively interlacing every row display area red, green, blue LED chip,
And its whole light tone degrees of data is acquired；Then after the same method to other display area entirety light tone degrees of data into
Row acquisition.
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| CN201810504426.9A CN108735144A (en) | 2018-05-24 | 2018-05-24 | A kind of non-point-by-point acquisition correction method of LED display |
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| CN201810504426.9A CN108735144A (en) | 2018-05-24 | 2018-05-24 | A kind of non-point-by-point acquisition correction method of LED display |
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Cited By (1)
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