CN105185314B - LED display uniformity compensation method - Google Patents
LED display uniformity compensation method Download PDFInfo
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- CN105185314B CN105185314B CN201510669429.4A CN201510669429A CN105185314B CN 105185314 B CN105185314 B CN 105185314B CN 201510669429 A CN201510669429 A CN 201510669429A CN 105185314 B CN105185314 B CN 105185314B
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Abstract
The present invention relates to single the primary colours all light image and dot interlace image that a kind of LED display uniformity compensation method, its acquisition shoot to obtain using image capture device such as CCD camera, to keep CCD camera position constant in shooting process；Single primary colours all light image is that the main purpose of dot interlace image is positioning in order to obtain the brightness of image of primary colours；It is then determined that an object brightness, by the brightness adjustment of each statistic unit to object brightness, finally realizes that the brightness such as whole-screen brightness of LED display destination display area is consistent.As can be seen here, the present invention is by obtaining dot interlace image, the monochrome information of each statistic unit is obtained with reference to point location, the destination display area of LED display such as whole-screen brightness is adjusted in same brightness by final realize, thus can improve the display quality of LED display.
Description
Technical field
The present invention relates to LED display control technologies field, more particularly to a kind of LED display uniformity compensation method.
Background technology
LED display is typically to be spliced by multiple modules, can with the development of current LED display alignment technique
Preferably to solve the problems, such as the show uniformity of LED display, but many times the internal portion of LED display screen can be bright in the presence of some
The bright chroma difference between module can not be completely eliminated in the module that colourity differs greatly, conventional correction methods, and the LED after correction shows
Display screen screen body still there may be luminance difference, and especially when LED screen is made up of multiple batches of module, difference can become apparent from；This
Outside, if there is other light sources interference on side when correction, the bright chroma data distortion of disturbed part is collected, it is also possible to
Bright chroma difference is still had after causing correction.
, can only at present for that can have the LED display of luminance difference after correction also without good solution method is proposed
Module is controlled as far as possible when building LED display screen body to ensure the brightness uniformity after correction with batch.But require
LED display screen body ensures that module is same batch when building, underaction when can cause to build LED display, and for
LED display lessor, it is difficult to which it is same batch to ensure module, therefore is difficult to from root to solve the problems, such as this kind of luminance difference.
The content of the invention
Therefore, in the prior art the defects of and deficiency, the present invention propose a kind of LED display uniformity compensation side
Method.
Specifically, a kind of LED display uniformity compensation method that one embodiment of the present of invention proposes, including step：
(i) a single primary colours all light image of the destination display area corresponding to LED display is obtained, wherein single primary colours all light figure
Seem to light in the destination display area to be all LED points of same color and carry out IMAQ to obtain by control
Arrive；(ii) a dot interlace image of the destination display area corresponding to the LED display is obtained, wherein, the target
Viewing area virtual grate has multiple statistic units of repeated arrangement along the line of the column direction, and each described statistic unit includes multiple
LED pixel, each described LED pixel include the LED point of a LED point or multiple different colours, and the dot interlace figure
Seem by controlling the same color LED point for a LED pixel for lighting same position in each described statistic unit simultaneously
Carry out IMAQ and obtain；(iii) zone location and point location are carried out to the dot interlace image to obtain each described system
Count the positional information of unit corresponding regional frame in the dot interlace image；(iv) by each described statistic unit it is described every
The positional information of the corresponding regional frame is applied in single primary colours all light image to count each institute in dot image
Brightness statistics value of the statistic unit in single primary colours all light image in corresponding regional frame is stated as the statistic unit
Brightness value；And (v) using the ratio of target brightness value and the brightness value of each statistic unit as the statistic unit
Luminance compensation coefficient correspond to single primary colours all light image to act in the statistic unit and there is the same face
The brightness correction coefficients of all LED points of color.
In one embodiment of the invention, single primary colours all light image in step (i) is to light institute by control
State in destination display area all red LED lamp points, all green LED lamps point or blue LED lamp point and carry out image and adopt
Collect and obtain.
In one embodiment of the invention, the dot interlace image in step (ii) is to light each institute by control
State the red LED lamp point of a LED pixel of same position in statistic unit, green LED lamp point, blue LED lamp point or its
Meaning combines and carries out IMAQ and obtain.
In one embodiment of the invention, the dot interlace image in step (i) is to light each institute by control
State the same color LED point of a LED pixel in center in statistic unit and carry out IMAQ and obtain；Phase
Ying Di, the step (iii) include carrying out point location to the dot interlace imagery exploitation grey scale centre of gravity method to obtain described in each
The Geometric center coordinates of statistic unit corresponding regional frame in the dot interlace image.
In one embodiment of the invention, the brightness value of each statistic unit in step (iv) is institute
State the brightness value sum of all image pixels of the statistic unit in single primary colours all light image in corresponding regional frame.
In one embodiment of the invention, the target brightness value in step (v) is the destination display area
The brightness value of a designated statistics unit in the multiple statistic unit or described for the destination display area
The average value of the brightness value of multiple statistic units.
In one embodiment of the invention, the destination display area is the whole viewing area of the LED display.
In one embodiment of the invention, the LED display includes multiple casings, the width of each casing
It is respectively the width of the statistic unit and the integral multiple of height with height.
In one embodiment of the invention, the LED display includes multiple LED lamp panels, each described LED lamp panel
Width and height be respectively the statistic unit width and height integral multiple.
From the foregoing, it will be observed that the embodiment of the present invention obtains the bright of each statistic unit by obtaining dot interlace image, with reference to point location
Information is spent, the destination display area of LED display such as whole-screen brightness is adjusted in same brightness by final realize, thus can be with
Improve the display quality of LED display.
By the detailed description below with reference to accompanying drawing, other side of the invention and feature become obvious.But it should know
Road, the accompanying drawing is only the purpose design explained, not as the restriction of the scope of the present invention.It is it should also be noted that unless another
Point out outside, it is not necessary to which scale accompanying drawing, they only try hard to conceptually illustrate structure and flow described herein.
Brief description of the drawings
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in detail.
Fig. 1 is a dot interlace image of the LED display for being relevant to the embodiment of the present invention.
Fig. 2 is showing after a single primary colours all light image progress zone location of the LED display to the embodiment of the present invention
It is intended to.
Fig. 3 is that the schematic diagram after point location is carried out to dot interlace image shown in Fig. 1.
Embodiment
In order to facilitate the understanding of the purposes, features and advantages of the present invention, below in conjunction with the accompanying drawings to the present invention
Embodiment be described in detail.
Below by taking red-green-blue LED display as an example, a kind of LED display proposed to the embodiment of the present invention is uniform
Property compensation method illustrates；A kind of typical case of the LED display uniformity compensation method of the present embodiment is shown to LED
Display screen is carried out after full frame pointwise correction (can be gamma correction or bright chroma correction).
The basic ideas of the LED display uniformity compensation method of the present embodiment are：Acquisition uses image capture device example
As CCD camera shoots obtained four images, i.e., red, green, blue all light image each one and dot interlace image one are opened, and are clapping
To keep CCD camera position constant during taking the photograph；Wherein, three single primary colours (red, green, blueness) all light images are to obtain
The brightness of image of every kind of primary colours is taken, the main purpose of dot interlace image is positioning；It is then determined that an object brightness, will each be counted
The brightness adjustment of unit finally realizes that LED display destination display area such as whole-screen brightness is consistent to object brightness.Specific step
It is rapid as follows：
(a) single base of for example whole viewing area (or full frame) of destination display area corresponding to LED display is obtained
Color all light image, single primary colours all light image herein is each one of red, green, blue all light image；More specifically, single primary colours
All light image is to light in destination display area to be all LED points of same color and carry out IMAQ by control
(such as CCD camera image taking) and obtain, namely red, green, blue all light image be respectively by control light target
All red LED lamp points, all green LED lamps point and all blue LED lamps point in viewing area and carry out IMAQ and
Obtain.
(b) the dot interlace image of the destination display area corresponding to LED display is obtained.Herein, the target of LED display shows
Show that region virtual grate has multiple statistic units such as 8*8 of (or width and short transverse) repeated arrangement along the line of the column direction big
Small statistic unit, each statistic unit include multiple LED pixels (such as 8*8 LED pixel), each described LED picture
Element for example including red, green and blue LED lamp point, and dot interlace image be lighted by control it is identical in each statistic unit
The same color LED point of one LED pixel of position simultaneously carries out IMAQ and obtained；Being controlled corresponding to dot interlace image
The LED point lighted can be red LED lamp point, green LED lamp point, blue LED lamp point or its any combination.Preferably, it is
It is easy to the position of quick obtaining statistic unit corresponding regional frame in single primary colours all light image, the quilt corresponding to dot interlace image
It is the LED point in each statistic unit in a LED pixel in center to control the LED point lighted；Herein
It is noted that the width and height for statistic unit are the situation of even number, then the LED pixel in center has
Four, then the LED pixel lighted by control can be any one in this four；Similarly, for statistic unit width and
Height one is the situation that odd number another one is even number, then the LED pixel in center has two, then is lighted by control
LED pixel can be any one in the two.
As for statistic unit size, it is necessary to ensure the width of the destination display area of LED display and highly (with LED pictures
Prime number gauge) be respectively statistic unit width BlockSizeWidthWith height BlockSizeHeightIntegral multiple.In addition, system
Counting the determination mode of cell size can be：With BlockSizeHeightExemplified by, BlockSize is made firstHeightIt is initial for one
Value such as 8, if the height of the destination display area of LED display is not 8 integral multiple, in BlockSizeHeight∈{9,
10,11,12,13,14,15 } BlockSize is determined betweenHeightSize, if being still unsatisfactory for integral multiple requirement,
BlockSizeHeight∈ determines BlockSize between { 1,2,3,4,5,6,7 }HeightSize.
(c) graphical analysis is carried out to dot interlace image to obtain each statistic unit corresponding regional frame in dot interlace image
Positional information.Concretely：Point location is carried out to dot interlace imagery exploitation grey scale centre of gravity method, and for the accuracy of point location,
Zone location can be carried out before point location using single primary colours all light image；Then again in the scope of zone location, Ye Jiru
Point location is carried out to dot interlace image in ABCD rectangular areas shown in Fig. 2, such as the white box in Fig. 3.Herein, in dot interlace image
The corresponding LED lighted by controlling point is the feelings of the LED point of the LED pixel in the center of each statistic unit
Under shape, the grey scale centre of gravity coordinate being calculated using grey scale centre of gravity method is the several of point location regional frame (white box in Fig. 3)
What centre coordinate, namely the Geometric center coordinates of each statistic unit corresponding regional frame in dot interlace image, so as to available
The positional information of each statistic unit corresponding regional frame in dot interlace image.In addition, it is noted that because single primary colours are complete
Bright image and dot interlace image is to carry out image to same destination display area on the premise of keeping CCD camera position constant to adopt
Collect and obtain, therefore to zone location scope (the ABCD rectangles in Fig. 2 obtained from single primary colours all light image progress zone location
Region) should be consistent with the zone location scope of dot interlace image.The graphical analysis such as zone location and point location is carried out as image
Algorithm is prior art, be will not be repeated here.
(d) brightness value of each statistic unit is obtained.By taking green all light image as an example, it will be obtained according to step (c) each
The positional information of individual statistic unit corresponding regional frame in dot interlace image is applied to green all light image, you can obtains each system
Count the position of unit corresponding regional frame in green all light image；Each statistic unit is counted afterwards in green all light image
In brightness statistics value in corresponding regional frame respectively as each statistic unit brightness value Bright.Herein, each is united
The brightness value Bright for counting unit is all image pixels of the statistic unit in green all light image in corresponding regional frame
Brightness value sum, such as green component values sum；LED pixel either in the brightness value sum divided by the statistic unit
The quotient of quantity.
(e) luminance compensation coefficient is calculated, eliminates luminance difference.Specially：An object brightness is first determined, then will be each
The brightness value of individual statistic unit is adjusted to object brightness, and final realize eliminates destination display area such as whole-screen brightness difference, its
Following steps can be included：
Determine object brightness Brightstandard, wherein object brightness BrightstandardSelection primarily to by mesh
For example full frame brightness unification in viewing area is marked to a gray scale, therefore its selection does not limit, and can select single
The brightness value of statistic unit is as object brightness BrightstandardOr the average value of the brightness value of each statistic unit is as target
Brightness Brightstandard, can also an artificially defined experience brightness value as object brightness Brightstandard。
Exemplified by analyzing green all light image, it is assumed that the brightness value Bright of the statistic unit of selection the first row first row makees
For object brightness BrightstandardIf statistic unit size BlockSize=8*8, by the statistic unit of the first row secondary series
Brightness value uniformly arrive object brightness BrightstandardExemplified by：
The brightness value of the statistic unit of the first row first row is Bright(1,1), that is, have Brightstandard=
Bright(1,1)；
The brightness value of the statistic unit of the first row secondary series is Bright(1,2)；
Calculate the brightness value Bright of current statistic unit(1,2)It is transformed into BrightstandardWhen corresponding luminance compensation system
Number Coefcompensation, it meets formula：Coefcompensation=Brightstandard/Bright(1,2)；
Afterwards by luminance compensation coefficient CoefcompensationIt is applied to corresponding to current statistic unit 8*8 LED pixel
In the correction coefficient green principal component of each green LED lamp point, if the correction coefficient green master minute of some green LED lamp point
Measure as Coefgreen, then carrying out the correction coefficient green principal component after luminance compensation is：Coefgreen×Coefcompensation。
Similarly, to the luminance compensation and first of the correction coefficient green principal component of the green LED lamp points of other statistic units
The statistic unit of row secondary series is similar, then the brightness of the green component of final goal viewing area is reached in same brightness.
For red all light image and each statistic unit of blue all light image, according to above-mentioned green all light image
Identical processing method is handled, finally can be bright to an identical by for example full frame brightness adjustment of destination display area
Spend in rank.
Further it will be understood that above-described embodiment, which is brightness to each statistic unit, uniformly arrives same gray scale
On, unification can also be similarly carried out to colourity difference.In addition, for the luminance compensation of red, green, blue all light image, and
It is not limited to only shoot a dot interlace image described in above-described embodiment, each single primary colours all light image can also be directed to, respectively
Shoot the dot interlace image of corresponding color.Furthermore in above-described embodiment, although configuration statistic unit width and highly respectively with
The width and height of for example whole viewing area of the destination display area of LED display meet that integral multiple relation can meet
The precision of calculating, but in order to further improve the precision of luminance compensation, avoid a statistic unit from including the LED of two casings
Lamp point, the width and height that the width and height of statistic unit are configurable to respectively with casing meet integral multiple relation, and it is worked as
So the width and height also respectively with the whole viewing area of LED display meet integral multiple relation.Similarly, system can also be configured
The width and height for counting unit meet integral multiple relation with the width of LED lamp panel and highly respectively, its certainly also respectively with casing
Width and height meet integral multiple relation and with the width of the whole viewing area of LED display and highly meet integral multiple
Relation, because the screen body of LED display can be formed by one or more box body splicings, and single casing can be by one
Individual or multiple LED lamp panels are spliced.
In summary, the embodiment of the present invention obtains the bright of each statistic unit by dot interlace image taking with reference to point location
Information is spent, the destination display area of LED display such as whole-screen brightness is adjusted on same gray scale by final realize, thus
Luminance difference existing for the uniform LED display of correction can be effectively eliminated, greatly improve the display matter of LED display
Amount.
The above described is only a preferred embodiment of the present invention, any formal limitation not is made to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any to be familiar with this professional technology people
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
For the equivalent embodiment of equivalent variations, as long as being the technical spirit pair according to the present invention without departing from technical solution of the present invention content
Any simple modification, equivalent change and modification that above example is made, in the range of still falling within technical solution of the present invention.
Claims (9)
1. a kind of LED display uniformity compensation method, it is characterised in that including step：
(i) a single primary colours all light image of the destination display area corresponding to LED display is obtained, wherein single primary colours are complete
Bright image is to light in the destination display area to be all LED points of same color and carry out IMAQ by control
And obtain；
(ii) a dot interlace image of the destination display area corresponding to the LED display is obtained, wherein, the target
Viewing area virtual grate has multiple statistic units of repeated arrangement along the line of the column direction, and each described statistic unit includes multiple
LED pixel, each described LED pixel include the LED point of a LED point or multiple different colours, and the dot interlace figure
Seem by controlling the same color LED point for a LED pixel for lighting same position in each described statistic unit simultaneously
Carry out IMAQ and obtain；
(iii) zone location and point location are carried out to the dot interlace image to obtain each described statistic unit in the dot interlace
The positional information of corresponding regional frame in image；
(iv) by each described statistic unit, the positional information of the corresponding regional frame is applied in the dot interlace image
To count each described statistic unit corresponding area in single primary colours all light image in single primary colours all light image
Brightness value of the brightness statistics value of domain inframe as the statistic unit；And
(v) mended the ratio of target brightness value and the brightness value of each statistic unit as the brightness of the statistic unit
Repay coefficient and correspond to single primary colours all light image and owning with the same color to act in the statistic unit
The brightness correction coefficients of LED point.
2. LED display uniformity compensation method as claimed in claim 1, it is characterised in that in step (i), the list
Primary colours all light image be by control light all red LED lamp points in the destination display area, all green LED lamps point or
The blue LED lamp point simultaneously carries out IMAQ and obtained.
3. LED display uniformity compensation method as claimed in claim 1, it is characterised in that in step (ii), it is described every
Dot image is the red LED lamp point, green for the LED pixel that same position in each described statistic unit is lighted by control
Color LED point, blue LED lamp point or its be combined and carry out IMAQ and obtain.
4. LED display uniformity compensation method as claimed in claim 1, it is characterised in that in step (i), it is described every
Dot image is that the same color of a LED pixel in center in each described statistic unit is lighted by control
LED point simultaneously carries out IMAQ and obtained；Correspondingly, the step (iii) is included to the dot interlace imagery exploitation gray scale weight
Heart method carries out point location to obtain the geometry of each described statistic unit corresponding regional frame in the dot interlace image
Centre coordinate.
5. LED display uniformity compensation method as claimed in claim 1, it is characterised in that in step (iv), each
The brightness value of the statistic unit is the statistic unit in single primary colours all light image in corresponding regional frame
The brightness value sum of all image pixels.
6. LED display uniformity compensation method as claimed in claim 1, it is characterised in that in step (v), the mesh
Mark brightness value for the destination display area the multiple statistic unit in a designated statistics unit the brightness value,
Or it is the average value of the brightness value of the multiple statistic unit of the destination display area.
7. LED display uniformity compensation method as claimed in claim 1, it is characterised in that the destination display area is
The whole viewing area of the LED display.
8. LED display uniformity compensation method as claimed in claim 7, it is characterised in that the LED display includes more
Individual casing, the width and height of each casing are respectively the width of the statistic unit and the integral multiple of height.
9. LED display uniformity compensation method as claimed in claim 7, it is characterised in that the LED display includes more
Individual LED lamp panel, the width and height of each LED lamp panel are respectively the width of the statistic unit and the integer of height
Times.
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| CN116913197B (en) * | 2023-09-15 | 2024-01-16 | 武汉精立电子技术有限公司 | Pixel positioning method, pixel brightness extraction method and system |
| CN117079586B (en) * | 2023-10-12 | 2024-01-05 | 长春希达电子技术有限公司 | Real pixel display screen blind spot repairing device, method, control system and electronic equipment |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1185104A (en) * | 1997-09-11 | 1999-03-30 | N H K Technical Service:Kk | Eliminating method for fixed pattern noise of large screen led display device |
| CN101206833A (en) * | 2007-08-24 | 2008-06-25 | 深圳市同洲电子股份有限公司 | System and method for obtaining gamma correction data point-to-point as well as application system thereof |
| CN101377918A (en) * | 2008-09-19 | 2009-03-04 | 北京巨数数字技术开发有限公司 | Electronic display screen system, method and system for correcting electronic display screen brightness |
| CN101692326A (en) * | 2009-09-01 | 2010-04-07 | 惠州市德赛智能科技有限公司 | System and method for on-site point-by-point calibration of brightness and chrominance of the whole screen of LED display screen |
| CN101916539A (en) * | 2010-08-20 | 2010-12-15 | 西安诺瓦电子科技有限公司 | System and method for correcting brightness and chromaticity of LED display screen point by point |
| CN102402944A (en) * | 2011-12-20 | 2012-04-04 | 深圳市奥拓电子股份有限公司 | Point-by-point correcting system and point-by-point correcting method for LED display screen |
| CN103413527A (en) * | 2013-08-19 | 2013-11-27 | 西安诺瓦电子科技有限公司 | Image acquisition method and display method for LED display screen correction |
| CN103426403A (en) * | 2013-08-16 | 2013-12-04 | 西安诺瓦电子科技有限公司 | Image acquisition method for calibration, picture display method and calibration method for LED display screen |
| CN103778887A (en) * | 2013-03-21 | 2014-05-07 | 西安电子科技大学 | Method and device for correcting brightness of LED display device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4865986B2 (en) * | 2003-01-10 | 2012-02-01 | グローバル・オーエルイーディー・テクノロジー・リミテッド・ライアビリティ・カンパニー | Organic EL display device |
-
2015
- 2015-10-13 CN CN201510669429.4A patent/CN105185314B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1185104A (en) * | 1997-09-11 | 1999-03-30 | N H K Technical Service:Kk | Eliminating method for fixed pattern noise of large screen led display device |
| CN101206833A (en) * | 2007-08-24 | 2008-06-25 | 深圳市同洲电子股份有限公司 | System and method for obtaining gamma correction data point-to-point as well as application system thereof |
| CN101377918A (en) * | 2008-09-19 | 2009-03-04 | 北京巨数数字技术开发有限公司 | Electronic display screen system, method and system for correcting electronic display screen brightness |
| CN101692326A (en) * | 2009-09-01 | 2010-04-07 | 惠州市德赛智能科技有限公司 | System and method for on-site point-by-point calibration of brightness and chrominance of the whole screen of LED display screen |
| CN101916539A (en) * | 2010-08-20 | 2010-12-15 | 西安诺瓦电子科技有限公司 | System and method for correcting brightness and chromaticity of LED display screen point by point |
| CN102402944A (en) * | 2011-12-20 | 2012-04-04 | 深圳市奥拓电子股份有限公司 | Point-by-point correcting system and point-by-point correcting method for LED display screen |
| CN103778887A (en) * | 2013-03-21 | 2014-05-07 | 西安电子科技大学 | Method and device for correcting brightness of LED display device |
| CN103426403A (en) * | 2013-08-16 | 2013-12-04 | 西安诺瓦电子科技有限公司 | Image acquisition method for calibration, picture display method and calibration method for LED display screen |
| CN103413527A (en) * | 2013-08-19 | 2013-11-27 | 西安诺瓦电子科技有限公司 | Image acquisition method and display method for LED display screen correction |
Non-Patent Citations (1)
| Title |
|---|
| 《LED显示屏亮度非均匀性逐点校正技术的研究》;赵星梅;《中国优秀硕士学位论文全文数据库（信息科技辑）》;20090715;第41-44页 * |
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