CN105551428B - LED display dot interlace acquisition correction method - Google Patents
LED display dot interlace acquisition correction method Download PDFInfo
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- CN105551428B CN105551428B CN201610077582.2A CN201610077582A CN105551428B CN 105551428 B CN105551428 B CN 105551428B CN 201610077582 A CN201610077582 A CN 201610077582A CN 105551428 B CN105551428 B CN 105551428B
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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]
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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Abstract
The present invention relates to a kind of LED display dot interlace acquisition correction method, and region virtual grate to be corrected into multiple dot interlace cells and is determined that image beats screen mode and obtains required monochrome image for the same color LED point in multiple LED pixels in each bright dot interlace cell of each secondary control point for carrying out IMAQ by it.Namely, the present invention is directed to the bottleneck problem of current dot interlace acquisition correction mode, propose a kind of more lamp acquisition correction methods of LED display dot interlace, it is by increasing the LED pixel number on individual collection image, improve image capture device photo-sensitive cell such as camera CCD effective rate of utilization, ensure that reduces image capture device parameter regulation complexity while individual brightness of image collected reaches requirement, also reduce in addition and defocus regulation difficulty, so that the more lamp acquisition correction modes of dot interlace are more efficiently applied in bigger resolution ratio LED display correction, save a large amount of corrections and expend the time.
Description
Technical field
The present invention relates to LED to show alignment technique field, more particularly to a kind of LED display dot interlace acquisition correction method.
Background technology
In recent years, the development of domestic and international LED display manufacturing gradually tends to small spacing, super large resolution ratio, these
Development trend also directly determines that LED display correction industry has welcome new challenge.So-called small spacing refers to less LED
Point spacing, as P1.5 represents pel spacing 1.5mm.It is indoor that the constantly diminution of LED spacing means that display screen will be come into by open air, by
Remote viewing, which is changed into, closely to be watched, and LED spacing reduces the resolution ratio increase for also causing same physical size screen body in addition,
Such as 2K, 4K the screen body occurred on the market at present.
When LED display correction industry welcomes the challenge impact of small spacing, super large resolution ratio, but due to collecting device
The limitation of ccd sensor number so that the screen body that the requirement of accurate measurement LED light tone angle value constrains camera single acquisition is differentiated
Rate, then dot interlace acquisition correction mode arise at the historic moment.This dot interlace acquisition correction mode is illustrated in fig. 1 shown below, unfilled in Fig. 1
Round dot represents non-lit up LED point, and the round dot of filling represents the LED point lighted.
Dot interlace acquisition correction mode principle is to divide region to be corrected into many size identical cells (in such as Fig. 1
The 3*3 cells of solid line circle choosing), then according to certain order gradually same position LED point in collecting unit lattice, then need
Want shooting unit table rows number to be multiplied by cell columns image (such as 3*3=9 images) to complete whole region to be corrected to own
With color LED point bright chroma collecting work, Xi'an Novastar Electronic Technology Co., Ltd. is for details, reference can be made at 08 month 2013 19
Application No. 201310362893.X, entitled " the correction image-pickup method of LED display and display filed in day
The Chinese invention patent application of method ".This mode advantage is in camera measurement work visual angle is big, need not be frequent in trimming process
Mobile camera angle lenses, a large amount of correction times are saved, be exactly that these advantages can make it that dot interlace acquisition correction mode will be in the present
Turn into main flow correcting mode in a period of time afterwards.
But where this mode also has its bottleneck, on the one hand with the continuous increase of dot interlace cell size, individual is adopted
The bright light number of collection image can decline at double, and the brightness of individual collection image can also decline at double, such as equal resolution screen body 10*10
Dot interlace correction declines 100 times than non-dot interlace correcting luminance, and so when dot interlace cell size increases to a certain extent, individual is adopted
The brightness of collection image is just unable to reach pointwise correction requirement；On the other hand when single acquisition screen body resolution ratio constantly increases, figure
Effective CCD pixel number as shared by gathering single LEDs can constantly decline, and easily occur that acquisition precision is low or moire fringes show
As, so need to do effective CCD pixel number shared by the single LEDs of defocusing blurring increase during collection, and defocusing blurring also can
Reduce brightness of image.
The content of the invention
Therefore, to overcome in the prior art the defects of and deficiency, the present invention propose a kind of LED display dot interlace acquisition correction
Method.
Specifically, a kind of LED display dot interlace acquisition correction method that the embodiment of the present invention proposes, including step：(i) set
Put the size of the dot interlace cell in region to be corrected and the size of LED block in dot interlace cell and determine corresponding described to be corrected
The lamp point lighting mode of each collection image in region, wherein the region division to be corrected has multiple dot interlace units
Lattice, in each described dot interlace cell division have multiple LED blocks；(ii) image is gathered according to each of determination
One of opposite position in each described dot interlace cell in the region to be corrected is lighted in the control of lamp point lighting mode
LED block is for collecting corresponding designated color monochrome image, so as to obtain the designated color achromatic map needed for multiple
Picture, wherein during the designated color monochrome image needed for multiple described in obtaining, it is each in each dot interlace cell
Individual LED block, which is controlled, to be lighted repeatedly, and in same LED block each time by control ignition, the LED
Designated color LED point in multiple LED pixels in block, which is controlled, to be lighted and the multiple LED pixels lighted by control
Position distribution situation the LED block it is described repeatedly by control ignition in it is different；(iii) according to it is described multiple
Each in required designated color monochrome image is controlled the brightness collection value of the LED block lighted and described by control point
The position distribution situation of the multiple LED pixels lighted by control in bright LED block calculates each by control point
The brightness collection value of designated color LED point in all LED pixels of bright LED block, so as to obtain the area to be corrected
The brightness collection value of designated color LED point in all LED pixels in domain；And (iv) utilizes the institute in the region to be corrected
Described treat is calculated in the brightness collection value for having the designated color LED point in LED pixel and the gamma correction desired value set
The correction coefficient of designated color LED point in all LED pixels of correcting area.
In one embodiment of the invention, in step (i), multiple LEDs in same dot interlace cell
The size of block is identical and the size of the dot interlace cell for the size of the LED block integral multiple.
In one embodiment of the invention, in step (i), multiple LEDs in same dot interlace cell
The size of block differs.
In one embodiment of the invention, in step (ii), in being lighted each time by control for same LED block
During, the designated color LED point in multiple LED pixels of the LED block, which is controlled, lights a simultaneously remaining LED pixel
It is not controlled to light.
In one embodiment of the invention, in step (ii), in the described repeatedly by control point of same LED block
During bright, wherein the once designated color LED point quilt of all LED pixels of the LED block described in control ignition
Control is lighted, and the designated color LED point quilt of the remaining LED block described in control ignition only part LED pixel
Control is lighted.
In one embodiment of the invention, in step (ii), in being lighted each time by control for same LED block
During, the designated color LED point in the LED block only in the LED pixel of part, which is controlled, to be lighted.
In one embodiment of the invention, in step (ii), the designated color monochrome image needed for multiple
Quantity is equal to the LED pixel line number of the dot interlace cell and the product of LED pixel columns, and each LED block is controlled
The number lighted is equal to the LED pixel line number of the LED block and the product of LED pixel columns.
In one embodiment of the invention, in step (ii), the designated color monochrome image needed for multiple is
Red monochromatic image, green monochromatic image or blue monochromatic images.
In one embodiment of the invention, the LED block lighted by control in each designated color monochrome image
The acquisition modes of brightness collection value be：To the designated color monochrome image to be controlled the LED block lighted to be done as unit
Point location processing, cumulative point location inframe image pixel gray level are worth to each and are controlled the initial bright of the LED block lighted
Spend collection value, and normalized each obtained described bright by the original intensity collection value for controlling the LED block lighted
Spend collection value.
In addition, a kind of LED display dot interlace acquisition correction method that another embodiment of the present invention proposes, including step：(a)
The lamp point lighting mode of dot interlace cell is determined according to the size of the resolution sizes in region to be corrected and dot interlace cell, wherein
The region division to be corrected has multiple dot interlace cells；(b) according to the lamp point lighting mode of the dot interlace cell of determination
Multiple LED pixels of opposite position in each described dot interlace cell in each bright region to be corrected of secondary control point
In designated color LED point for collecting corresponding designated color monochrome image, so as to obtain the finger needed for multiple
Determine color monochrome image, wherein during the designated color monochrome image needed for multiple described in obtaining, each dot interlace list
Multiple LED that all LED pixels in member were lighted and lighted each time by control in same dot interlace cell by control
The position distribution situation of pixel is different in the different ignitions by control；(c) the specifying needed for multiple according to
The total brightness collection value for the multiple LED pixels lighted each time by control in each dot interlace cell in color monochrome image
All LED pixels in the region to be corrected are calculated with the position distribution situation of the multiple LED pixels lighted by control
In designated color LED point brightness collection value；And (d) utilizes the finger in all LED pixels in the region to be corrected
Determine the brightness collection value of color LED point and all of the region to be corrected are calculated in the gamma correction desired value of setting
The correction coefficient of designated color LED point in LED pixel.
From the foregoing, it will be observed that the embodiment of the present invention is directed to the bottleneck problem of current dot interlace acquisition correction mode, propose that a kind of LED shows
The more lamp acquisition correction methods of display screen dot interlace, this method are adopted by increasing the LED pixel number on individual collection image, lifting image
Collect equipment photo-sensitive cell such as camera CCD effective rate of utilization, ensure to reduce image while single image brightness reaches requirement
Collecting device parameter regulation complexity, also reduces defocus regulation difficulty in addition so that the more lamp acquisition correction modes of dot interlace are more
Add and be efficiently applied in bigger resolution ratio LED display correction, save a large amount of corrections and expend the time.
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 that the collection image in a kind of existing LED display dot interlace acquisition correction method beats screen schematic diagram.
Fig. 2 is a kind of schematic diagram of dot interlace cell of the embodiment of the present invention.
Fig. 3 is that the collection image in a kind of LED display dot interlace acquisition correction method that the embodiment of the present invention proposes plays screen
Schematic diagram.
Fig. 4 A and Fig. 4 B are a red monochromatic image and its partial enlarged drawing collected of the related embodiment of the present invention
The picture of picture.
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.
The embodiment of the present invention is directed to the bottleneck problem of current dot interlace acquisition correction mode, proposes a kind of LED display dot interlace
More lamp acquisition correction methods, this method lift image capture device sense by increasing the LED pixel number on individual collection image
Optical element such as camera CCD effective rate of utilization, ensure to reduce image capture device while single image brightness reaches requirement
Parameter regulation complexity, also reduce defocus regulation difficulty in addition so that the more lamp acquisition correction modes of dot interlace are more efficiently
It is applied in bigger resolution ratio LED display correction, saves a large amount of corrections and expend the time.
Specifically, a kind of LED display dot interlace acquisition correction method that the embodiment of the present invention proposes, its specific implementation
It is as follows：
(1) size of the dot interlace cell in region to be corrected and the size of LED block in dot interlace cell and determination are set
The lamp point lighting mode (be commonly called as image and beat screen mode) of each collection image in the corresponding region to be corrected.With regard to single led
For display screen, the region to be corrected can be whole viewing area or the office of LED display of LED display
Portion viewing area, specially which kind of situation are then the photo-sensitive cells of the resolution sizes and image capture device by LED display
Resolution ratio determine.Furthermore single region to be corrected typically can virtual grate into multiple dot interlace cells, and these dot interlace lists
The size of first lattice is typically set to identical；As shown in Fig. 2 it shows the dot interlace cell of a 9*9 size, it has 81 LED
The LED block of pixel and this 81 LED pixels by virtual grate into nine 3*3 sizes, is respectively designated as B11~B33；And in order to
Convenient to describe, 81 LED pixels in dot interlace cell are numbered with numeral 0~80 respectively.In addition, corresponding region to be corrected
Each collection image beat screen mode and be, for example, same position in each bright dot interlace cell of each secondary control point one
Same color LED point in 8 LED pixels in individual 3*3 sizes LED block, herein it is understood that each collection figure
Picture beats the screen mode namely lamp point lighting mode of each dot interlace cell in fact.
(2) according to each of determination collection image lamp point lighting mode control light each in region to be corrected every
A LED block of opposite position obtains corresponding designated color monochrome image so that collection is shot in dot element lattice, from
And the designated color monochrome image needed for multiple can be obtained.By taking the dot interlace cell of 9*9 sizes shown in Fig. 2 as an example, acquisition
Designated color monochrome image sum needed for multiple is 9*9=81；Due in dot interlace cell LED block B11~B33 it is big
Small is 3*3, then each LED block in dot interlace cell can be lighted 3*3=9 times for IMAQ by control, such as
Identical designated color LED point such as red LED lamp point in the bright LED block of each secondary control point in 8 LED pixels and right
In 9 times of same LED block by control ignition, existed each time by this 8 LED pixels in control ignition
Position distribution situation in LED block is different.
By taking the lamp point lighting mode of the single dot interlace cell shown in Fig. 3 as an example, the screen mode of beating of the 1st collection image is
The same color in 1,2,3,4,5,6,7, No. 8 LED pixel in dot interlace cell in most upper left corner LED block B11 is lighted in control
LED point and No. 0 LED pixel is not controlled lights, the screen mode of beating of the 2nd collection image is that control is lighted in dot interlace cell
The same color LED point in 0,2,3,4,5,6,7, No. 8 LED pixel in most upper left corner LED block B11 and No. 1 LED pixel are not
Lighted by control, by that analogy, the screen mode of beating of the 3rd collection image lights most upper left corner LED in dot interlace cell for control
The same color LED point in 0,1,3,4,5,6,7, No. 8 LED pixel in lamp block B11 and No. 2 LED pixels are not controlled lights,
4th collection image beat screen mode for control light in dot interlace cell in most upper left corner LED block B11 0,1,2,4,5,
6th, the same color LED point in 7, No. 8 LED pixels and No. 3 LED pixels are not controlled lights, the 5th collection image beats screen side
Formula is lighted same in 0,1,2,3,5,6,7, No. 8 LED pixel in dot interlace cell in most upper left corner LED block B11 for control
Color LED point and No. 4 LED pixels are not controlled lights, the screen mode of beating of the 6th collection image is that dot interlace unit is lighted in control
The same color LED point in 0,1,2,3,4,6,7, No. 8 LED pixel in lattice in most upper left corner LED block B11 and No. 5 LED pictures
Element is not controlled to be lighted, and the screen mode of beating of the 7th collection image lights most upper left corner LED block in dot interlace cell for control
The same color LED point in 0,1,2,3,4,5,7, No. 8 LED pixel in B11 and No. 6 LED pixels are not controlled lights, the 8th
Collection image beat screen mode for control light in dot interlace cell in most upper left corner LED block B11 0,1,2,3,4,5,
6th, the same color LED point in No. 8 LED pixels and No. 7 LED pixels are not controlled lights, the 9th collection image beats screen mode
The same face in 0,1,2,3,4,5,6, No. 7 LED pixel in dot interlace cell in most upper left corner LED block B11 is lighted for control
Color LED point and No. 8 LED pixels are not controlled lights ..., the screen mode of beating of the 81st collection image is that dot interlace list is lighted in control
The same color LED point in 72,73,74,75,76,77,78, No. 79 LED pixels in first lattice in last cell LED block B33
And No. 80 LED pixels are not controlled lights.As can be seen here, for LED block B11, its corresponding 1st to the 9th collection
The beating in screen mode of image control the position distribution situation for the LED pixel lighted be distributed as [1,2,3,4,5,6,7,8], [0,
2,3,4,5,6,7,8], [0,1,3,4,5,6,7,8], [0,1,2,4,5,6,7,8], [0,1,2,3,5,6,7,8], [0,1,2,
3,4,6,7,8], [0,1,2,3,4,5,7,8], [0,1,2,3,4,5,6,8] and [0,1,2,3,4,5,6,7], it is clear that each time
Control the position distribution situation for the multiple LED pixels lighted different.In addition, it is necessary to explanation, still with LED block
, in other embodiments, can also be by any one beaten in screen mode collection figure of the 1st to the 9th collection image exemplified by B11
Picture beat screen mode be changed to control light all 9 LED pixels same color LED point (such as red LED lamp point), and its
The screen mode of beating that he opens collection image is still then the same color LED point that 8 LED pixels are lighted in control；Or each time
The number for the LED pixel lighted is controlled to might be less that 8, as long as meeting 2 and the above.
Hold above-mentioned, for the dot interlace cell of 9*9 sizes, the quantity of required designated color monochrome image is dot interlace unit
The LED pixel line number of lattice and the product of LED pixel columns, namely 9*9=81；And each LED in dot interlace cell
Block B11~B33's is lighted number by controlling as the LED pixel line number of LED block and the product of LED pixel columns, namely 3*3=
9 times.Herein it should be noted that the size of dot interlace cell be not limited to 9*9 or other sizes such as 5*5,6*6,
7*7,8*8,10*10,11*11 or 12*12, it can also be that LED pixel line number and columns are unequal；Also, in dot interlace cell
The size of LED block can also differ, such as by taking the dot interlace cell of 5*5 sizes as an example, the LED block of its virtual grate
Size include the situation such as 3*2,2*3,3*3 and 2*2.Furthermore herein, with single led pixel by a red LED, one it is green
(certain equally applicable monochromatic LED of the embodiment of the present invention for the RGB full-color LED display screens that color LED and a blue led are formed
Display screen, dual-colored LED display screen or more primary-color LED display screen), designated color LED point same as before is, for example, red LED
Lamp point, green LED lamp point or blue LED lamp point, and the monochrome image of the collection of each color LED point needs is 81,
Namely need to gather 81 red monochromatic images, 81 green monochromatic images and 81 blue monochromatic images；As for various monochromes
The acquisition mode of image, image capture device such as CCD camera can be utilized first sequentially to have shot 81 red monochromatic images, again
Sequentially shoot 81 green monochromatic images and then sequentially shoot 81 blue monochromatic images, certainly, red, green and blueness list
The priority acquisition order of color image is not limited.It is the picture of the 1st red monochromatic image collected in Fig. 4 A, its is right
It should control in 1,2,3,4,5,6,7, No. 8 LED pixel in the LED block B11 for lighting the most upper left corner in each dot interlace cell
Red LED lamp point；It is the picture of the partial enlargement of the red monochromatic image in Fig. 4 A in Fig. 4 B.
(3) each in the designated color monochrome image according to needed for multiple of foregoing acquisition is controlled the LED lighted
The brightness collection value of lamp block and the position distribution feelings by the multiple LED pixels lighted by control in LED block that control is lighted
Condition calculates the brightness collection of the designated color LED point in all LED pixels that each is controlled the LED block lighted
Value, so as to obtain the brightness collection value of the designated color LED point in all LED pixels in region to be corrected；Specifically：
First, by taking the 81 red monochromatic images collected as an example, by being controlled in each red monochromatic image
Lightening LED lamp block does point location processing by single lamp, and each quilt is calculated by cumulative point location inframe image pixel gray level value
The original intensity collection value of lightening LED lamp block is controlled, renormalization processing is by the original intensity collection value of control lightening LED lamp block
To obtain required brightness collection value；Of course, it should be understood that normalized can not also be done to original intensity collection value,
But directly using original intensity collection value as required brightness collection value.
Then, screen mode is beaten it is recognised that can using the 1st~9 red monochromatic image according to each collection image
Calculate in dot interlace cell by the bright of each red LED lamp point in control lightening LED lamp block B11 the 0th~No. 8 LED pixel
Collection value is spent, can be calculated in dot interlace cell by the of control lightening LED lamp block B12 using the 10th~18 red monochromatic image
The brightness collection value of each red LED lamp point in 9~No. 17 LED pixels, by that analogy, utilizes the 19th~27 red monochromatic
Image can be calculated in dot interlace cell by each red LED in control lightening LED lamp block B13 the 18th~No. 26 LED pixel
The brightness collection value of lamp point, it can be calculated in dot interlace cell by control lightening LED lamp using the 28th~36 red monochromatic image
The brightness collection value of each red LED lamp point in block B21 the 27th~No. 35 LED pixel, it is red single using the 37th~45
Color image can be calculated in dot interlace cell by each red in control lightening LED lamp block B22 the 36th~No. 44 LED pixel
The brightness collection value of LED point, it can be calculated in dot interlace cell using the 46th~54 red monochromatic image and LED is lighted by control
The brightness collection value of each red LED lamp point in lamp block B23 the 45th~No. 53 LED pixel, utilizes the 55th~63 red
Monochrome image can be calculated in dot interlace cell by each red in control lightening LED lamp block B31 the 54th~No. 62 LED pixel
The brightness collection value of LED point, it can be calculated in dot interlace cell using the 64th~72 red monochromatic image and LED is lighted by control
The brightness collection value of each red LED lamp point in lamp block B32 the 63rd~No. 71 LED pixel, utilizes the 73rd~81 red
Monochrome image can be calculated in dot interlace cell by each red in control lightening LED lamp block B33 the 72nd~No. 80 LED pixel
The brightness collection value of LED point, computational methods are shown below：
Wherein, x0~x8Such as represent each red LED lamp point of first LED block B11 in any one dot interlace cell
Brightness collection value, L0~L8Such as represent described in the 1st~9 red monochromatic image first LED block in dot interlace cell
B11 brightness collection value；
Calculate above-mentioned system of linear equations and can be exchanged into matrix operation, be shown below：
So as to calculate the brightness collection value of each red LED lamp point in first LED block B11, it is shown below：
As for the brightness collection value of each red LED lamp point in other LED blocks B12~B33 in dot interlace cell
Calculation is same as above, therefore will not be described in detail herein.It is, of course, understood that other color LED points such as green LED lamp point,
The calculating of the light tone collection value of blue LED lamp point will not be repeated here with the calculating of the brightness collection value of red LED lamp point.
(4) the brightness collection value using the designated color LED point in all LED pixels in region to be corrected and setting
The correction coefficient of the designated color LED point in all LED pixels in region to be corrected is calculated in gamma correction desired value.Tool
Body, utilize the brightness collection value and the gamma correction mesh of setting of the red LED lamp point in all LED pixels in region to be corrected
The brightness correction coefficients of the red color LED point in all LED pixels in region to be corrected can be calculated in scale value, utilize
The gamma correction desired value of the brightness collection value of green LED lamp point in all LED pixels in region to be corrected and setting can be with
The brightness correction coefficients of the green color LED point in all LED pixels in region to be corrected are calculated, utilize area to be corrected
The brightness collection value of blue LED lamp point in all LED pixels in domain can be calculated with the gamma correction desired value set
The brightness correction coefficients of Blue LED point in all LED pixels in region to be corrected, as a variety of colors LED point
Gamma correction desired value can be by counting the correspondence in all LED pixels of the LED display where region to be corrected
The average value of the brightness collection value of color LED point is set, and here with brightness collection value and gamma correction target
It is existing mature technology that value, which calculates brightness correction coefficients, therefore be will not be described in detail herein.Finally, the various of region to be corrected are being obtained
After the brightness correction coefficients of color LED point, brightness correction coefficients can be uploaded to the control system of target LED display
Stored, or even can also be stored to database in order to later maintenance in hardware.
Further it will be understood that the concept of LED block is introduced in the aforementioned embodiment, and in other embodiments,
It is determined that the screen mode of beating of each collection image can also be without using LED block concept, in this case, the one kind proposed
LED display dot interlace acquisition correction method can be summarized as including step：1) according to the resolution sizes and dot interlace in region to be corrected
The size of cell determines the lamp point lighting mode of dot interlace cell, wherein the region division to be corrected has multiple dot interlaces
Cell；2) it is every in the bright region to be corrected of each secondary control point of lamp point lighting mode of the dot interlace cell of determination
Designated color LED point in one dot interlace cell in multiple LED pixels of opposite position is for collecting phase
Corresponding designated color monochrome image, so as to obtain the designated color monochrome image needed for multiple, wherein obtain it is described multiple
During required designated color monochrome image, all LED pixels in each dot interlace unit lighted by control and
The position distribution situation for the multiple LED pixels lighted each time by control in same dot interlace cell is different by control point
It is different during bright；3) it is every in each dot interlace cell in the designated color monochrome image according to needed for multiple
The position of the total brightness collection value for the multiple LED pixels once lighted by control and the multiple LED pixels lighted by control
Distribution situation calculates the brightness collection value of the designated color LED point in all LED pixels in the region to be corrected；And
4) the brightness collection value using the designated color LED point in all LED pixels in the region to be corrected and the brightness of setting
The correction coefficient of the designated color LED point in all LED pixels in the region to be corrected is calculated in correction target value.
In summary, the embodiment of the present invention is directed to the bottleneck problem that current dot interlace acquisition correction faces, it is proposed that a kind of LED
The more lamp acquisition correction methods of display screen dot interlace, i.e., it is bright and the more lamps obtained by increasing single bright light number in big dot interlace cell
Degree collection value corresponds to the brightness point by point value of LED point to calculate in dot interlace cell, it can reach following beneficial effect：1) have
Effect improves image capture device photo-sensitive cell such as camera CCD utilization rate, ensure individual collection brightness of image reach by
The regulation complexity of image capture device parameter is also reduced while point calibration requirement；2) more lamps (corresponding LED is gathered
Block) image reduces and defocuses regulation difficulty, greatly reduce moire fringes phenomenon under the premise of acquisition correction precision is ensured；3) still
The advantage that image capture device measurement work visual angle is big in traditional dot interlace acquisition correction mode is maintained, avoids frequently moving camera
Angle lenses, save a large amount of corrections and expend the time；And 4) promote dot interlace acquisition correction mode to bigger resolution ratio LED display
Correction challenge.
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 (10)
- A kind of 1. LED display dot interlace acquisition correction method, it is characterised in that including step：(i) size of the dot interlace cell in region to be corrected and the size of LED block in dot interlace cell are set and determined correspondingly The lamp point lighting mode of each of the region to be corrected collection image, wherein the region division to be corrected have it is multiple described Dot interlace cell, in each described dot interlace cell division have multiple LED blocks；(ii) lighted according to the lamp point lighting mode control of each of determination collection image each in the region to be corrected A LED block of opposite position is for collecting corresponding designated color achromatic map in the individual dot interlace cell Picture, so as to obtain the designated color monochrome image needed for multiple, wherein in the designated color achromatic map needed for multiple described in acquisition As during, each LED block in each dot interlace cell, which is controlled, to be lighted repeatedly, and in same LED Block each time by control ignition, the designated color LED point in multiple LED pixels in the LED block is controlled System is lighted and the position distribution situation of the multiple LED pixels lighted by control is in the multiple by control point of the LED block It is different during bright；(iii) each in the designated color monochrome image needed for multiple is controlled the bright of the LED block lighted Spend collection value and the position distribution feelings of the multiple LED pixels lighted by control in the LED block lighted by control Condition calculates the brightness collection of the designated color LED point in all LED pixels that each is controlled the LED block lighted Value, so as to obtain the brightness collection value of the designated color LED point in all LED pixels in the region to be corrected；And(iv) the brightness collection value using the designated color LED point in all LED pixels in the region to be corrected and setting Gamma correction desired value the correction of the designated color LED point in all LED pixels in the region to be corrected is calculated Coefficient.
- 2. LED display dot interlace acquisition correction method as claimed in claim 1, it is characterised in that same in step (i) The size of multiple LED blocks in individual dot interlace cell is identical and the size of the dot interlace cell is the LED block Size integral multiple.
- 3. LED display dot interlace acquisition correction method as claimed in claim 1, it is characterised in that same in step (i) The size of multiple LED blocks in individual dot interlace cell differs.
- 4. LED display dot interlace acquisition correction method as claimed in claim 1, it is characterised in that in step (ii), same One LED block each time by control ignition, the designated color LED in multiple LED pixels of the LED block Point is lighted by control and remaining a LED pixel is not controlled lights.
- 5. LED display dot interlace acquisition correction method as claimed in claim 1, it is characterised in that in step (ii), same In the multiple ignition by control of one LED block, wherein the once LED block described in control ignition is all The designated color LED point of LED pixel, which is controlled, to be lighted, and the remaining LED block only part described in control ignition The designated color LED point of LED pixel, which is controlled, to be lighted.
- 6. LED display dot interlace acquisition correction method as claimed in claim 1, it is characterised in that in step (ii), same One LED block each time by control ignition, the designated color LED in the LED block only in the LED pixel of part Lamp point, which is controlled, to be lighted.
- 7. LED display dot interlace acquisition correction method as claimed in claim 1, it is characterised in that described in step (ii) The quantity of designated color monochrome image needed for multiple is equal to the LED pixel line number and LED pixel columns of the dot interlace cell Product, and each LED block is controlled that the number lighted is equal to the LED pixel line number of the LED block and LED pixel arranges Several products.
- 8. LED display dot interlace acquisition correction method as claimed in claim 1, it is characterised in that described in step (ii) Designated color monochrome image needed for multiple is red monochromatic image, green monochromatic image or blue monochromatic images.
- 9. LED display dot interlace acquisition correction method as claimed in claim 1, it is characterised in that each designated color list The acquisition modes of the brightness collection value of the LED block lighted by controlling in color image are：To the designated color monochrome image To be controlled the LED block lighted to do point location processing as unit, cumulative point location inframe image pixel gray level is worth to each The original intensity collection value of the individual LED block lighted by control, and normalized each controlled the LED block lighted Original intensity collection value and obtain the brightness collection value.
- A kind of 10. LED display dot interlace acquisition correction method, it is characterised in that including step：(a) the lamp point side of lighting of dot interlace cell is determined according to the size of the resolution sizes in region to be corrected and dot interlace cell Formula, wherein the region division to be corrected has multiple dot interlace cells；(b) it is each in the bright region to be corrected of each secondary control point of lamp point lighting mode of the dot interlace cell of determination Designated color LED point in the individual dot interlace cell in multiple LED pixels of opposite position is relative for collecting The designated color monochrome image answered, so as to obtain the designated color monochrome image needed for multiple, wherein obtaining multiple described institutes During the designated color monochrome image needed, all LED pixels in each dot interlace unit were lighted and same by control The position distribution situation for the multiple LED pixels lighted each time by control in one dot interlace cell is lighted different by control During it is different；(c) each time by control point in each dot interlace cell in the designated color monochrome image according to needed for multiple The total brightness collection value of bright multiple LED pixels and the position distribution situation of the multiple LED pixels lighted by control calculate The brightness collection value of the designated color LED point gone out in all LED pixels in the region to be corrected；And(d) the brightness collection value using the designated color LED point in all LED pixels in the region to be corrected and setting The correction system of the designated color LED point in all LED pixels in the region to be corrected is calculated in gamma correction desired value Number.
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| CN106652885B (en) * | 2016-09-29 | 2018-09-25 | 南京宇丰晔禾信息科技有限公司 | A kind of LED display power-economizing method based on image procossing |
| CN106998418B (en) * | 2017-03-31 | 2020-04-14 | 京东方科技集团股份有限公司 | Integrated display panel, display device and image display method |
| CN108735144A (en) * | 2018-05-24 | 2018-11-02 | 长春希达电子技术有限公司 | A kind of non-point-by-point acquisition correction method of LED display |
| CN113643646A (en) * | 2020-04-26 | 2021-11-12 | 西安诺瓦星云科技股份有限公司 | Correction method, device and system of LED display device |
| CN114582270B (en) * | 2020-11-30 | 2023-08-15 | 西安诺瓦星云科技股份有限公司 | Luminance and chrominance data acquisition method, device and system and computer readable storage medium |
| CN112561810B (en) * | 2020-12-07 | 2023-09-08 | 西安诺瓦星云科技股份有限公司 | Light-mixing removing method and device for display screen, storage medium and processor |
| CN112233570B (en) * | 2020-12-16 | 2021-04-02 | 卡莱特（深圳）云科技有限公司 | Arc screen correction method and device, computer equipment and storage medium |
| CN112697405A (en) * | 2021-03-23 | 2021-04-23 | 北京芯海视界三维科技有限公司 | Light-emitting unit detection method and device and detection instrument |
| CN113257181B (en) * | 2021-06-29 | 2021-10-22 | 卡莱特云科技股份有限公司 | LED screen correction image acquisition method, correction method, acquisition device and correction system |
| 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 |
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| JP2001134234A (en) * | 2000-09-12 | 2001-05-18 | Nichia Chem Ind Ltd | Display device and lighting method for led display unit |
| KR100746700B1 (en) * | 2006-10-17 | 2007-08-06 | 주식회사 싸인텔레콤 | System-on-chip based led signal processing apparatus |
| CN101692326B (en) * | 2009-09-01 | 2011-10-19 | 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 |
| CN102074179B (en) * | 2011-03-04 | 2013-01-23 | 南京洛普股份有限公司 | LED display screen point-by-point correction system and LED display screen point-by-point correction method |
| CN102402944B (en) * | 2011-12-20 | 2014-11-12 | 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 |
| CN104485068B (en) * | 2014-12-02 | 2017-02-01 | 西安诺瓦电子科技有限公司 | Luminance-chrominance correction method and system of LED (Light Emitting Diode) display screen |
| CN105185298B (en) * | 2015-08-05 | 2017-12-08 | 西安诺瓦电子科技有限公司 | LED display bearing calibration |
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