CN105448230B - The bearing calibration of LED display bright chroma and system based on human eye vision - Google Patents
The bearing calibration of LED display bright chroma and system based on human eye vision Download PDFInfo
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Abstract
The present invention relates to the LED display bright chroma bearing calibration based on human eye vision and system.Wherein, bearing calibration includes step：(a) the initial bright chroma correction coefficient average in region to be corrected is calculated；(b) region to be corrected and observation reference zone is controlled to show that the first correction picture of same color supplies eye-observation；(c) multiple component values in the color model that response carries out component regulation operation and inputted because treating the first correction picture that correcting area is shown, are calculated bright chroma correction coefficient average after the amendment in region to be corrected；(d) go out to adjust matrix using bright chroma correction coefficient mean value computation after initial bright chroma correction coefficient average and amendment；And (e) will adjust matrix and act on multiple LED pixel points in region to be corrected and obtain bright chroma correction coefficient after the amendment in region to be corrected.The present invention eliminates interregional bright chroma difference based on human eye vision regulation, and it can make LED reach the highly consistent of bright chroma on human eye vision.
Description
Technical field
The present invention relates to LED to show alignment technique field, and in particular to a kind of LED display based on human eye vision is bright
Chromaticity correction method and a kind of LED display bright chroma correction system based on human eye vision.
Background technology
LED display is widely used to city with the advantages that its bright in luster, visual high, low in energy consumption, environmental protection and energy saving
The places such as square, commercial center, it is limited yet with the current LED levels of production so that LED display bright chroma has human eye and regarded
Feel inconsistence problems.The basic reason of this bright chroma inconsistence problems is LED in itself, such as the LED of same production batch
Lamp, brightness might have 50% change, and wavelength (colourity) might have 15~20nm change, and these differences are to human eye vision
For be very significant.
LED can not be strictly controlled to produce consistent present situation in order to tackle, LED manufacturer takes brightness and colourity stepping
Method, the industrial stepping standard of LED manufacturer issue at present change for 25%~40% brightness change and 5nm colourity, will
Each class LED carries out fully mixed lamp, and LED display producer can use same batch to be shown with class LED to assemble same LED
Screen, but this stepping process is costly and time consuming, classifying requirement is stricter, and cost is also higher.This identical production batch LED warps
Cross stepping and also result in and belong to same class LED quantity and be extremely limited, so unavoidable in practical application use different productions
The identical class LED assemblings same LED display of batch, then generate the display screen light tone of the different batches LED in industry
Spend inconsistence problems.
For same batch with class LED display, bright chroma difference is smaller between LED point, is initially to pass through people in industry
Eye vision carries out point-by-point adjustment, but because human eye lights colourity difference insensitive (because difference area is too small), adjustment to single lamp
The reasons such as efficiency is low abandon this way, the alignment technique for pulsewidth modulation (PWM) then occur, based on pulsewidth modulation
Device measuring mode substantially increases correction efficiency, and the bright chroma uniformity consistency also solved between LED display lamp point is asked
Topic.It is existing a variety of to be currently based on the device measuring correcting mode of pulsewidth modulation, such as is coordinated based on industrial camera measurement, colorimeter
The point-to-point correction systems such as digital camera measurement, their trimming process are substantially all to gather on display screen to own by measuring apparatus
The relative or definitely light tone angle value, and then calculate the correction coefficient of all LED points of LED point, namely pass through according to CIE standards
All LEDs are clicked through with row coefficient compensation to adjust its CIE-XYZ value to basically identical, so as to seek bright chroma on human eye vision
It is basically identical, adjust different electric currents further according to the correction coefficient of every LED lamp point, it is equal to reach whole LED display bright chroma
It is even consistent.
For the display screen using the identical class LED of different batches, common connecting method has：
Connecting method 1：The identical class LED of multiple different batches, that is, LED to be spliced are included inside casing (or module)
Multiple batch LED are included in each casing (or module) of display screen, they are mixed and broken up at each casing (or module)
Inside, so then causes the bright chroma difference in region (corresponding casing or module), and certainly interregional to equally exist bright chroma poor
It is different；
Connecting method 2：It is the identical class LED of same batch that casing (or module) is internal, and LED display is by multiple
Different batches LED casing (or module) composition, so then causes interregional bright chroma difference, and the bright chroma in region is equal
Even property is preferable.
At present, for using connecting method 1 LED display, be still by point-to-point correction system come improve lamp point it
Between bright chroma difference；And for the LED display using connecting method 2, due to existing measuring apparatus and point-to-point correction system
Measurement accuracy be below human eye vision, as shown in the table, it is human eye test experiments data and measuring apparatus accuracy data pair
Than also illustrate that human eye vision precision is higher than measuring apparatus precision, and human eye vision is the region area to bright chroma difference
It is more big more sensitive so that even if it still can perceive slight interregional bright chroma difference by pointwise correction, human eye.Mesh
The preceding pointwise correction mode based on device measuring is all difficult to so that this LED display light tone that multiple batches of region difference be present
Degree reaches high consistency, it is impossible to meets human eye vision requirement.
It is adjusted in addition, may be based on human eye vision for the LED display using connecting method 2, tradition is to difference
It is the lowest that obvious efficiency is adjusted in LED single-points one by one inside batch, does not use substantially；And also have at present it is a kind of compared with
It is exactly to be qualitatively judged by human eye vision for conventional method, repeatedly sets different desired values, uses the means of similar correction
The correction coefficient of all LED points in each region is regenerated, this mode is also proved to its efficiency phase in actual applications
Contrast is lower.
In view of this, it is necessary to for the LED display in different batches region, devise one kind by human eye vision to not
Bright chroma with batch region carries out quick regulation to eliminate the method for the interregional bright chroma difference of different batches so that multiple batches of
It is consistent more convenient, quick that the LED display bright chroma in region reaches human eye vision.
The content of the invention
Therefore, to overcome technological deficiency existing for prior art, the present invention proposes that a kind of LED based on human eye vision is shown
The bearing calibration of device bright chroma and a kind of LED display bright chroma correction system based on human eye vision.
Specifically, a kind of LED display bright chroma bearing calibration based on human eye vision that the embodiment of the present invention proposes,
Including step：(a) the initial bright chroma correction coefficient average in region to be corrected is calculated；(b) region to be corrected and sight are controlled
Examine reference zone and show that the first correction picture of same color supplies eye-observation；(c) response to the region to be corrected because showing
The first correction picture color model for carrying out component regulation operation and inputting in multiple component values, be calculated described
Bright chroma correction coefficient average after the amendment in region to be corrected；(d) the initial bright chroma correction coefficient average and described is utilized
Bright chroma correction coefficient mean value computation goes out to adjust matrix after amendment；And (e) by it is described regulation matrix act on it is described to be corrected
Multiple LED pixel points in region and obtain bright chroma correction coefficient after the amendment in the region to be corrected.
In one embodiment of the invention, above-mentioned first correction picture is sprite.
In one embodiment of the invention, above-mentioned sprite is selected from one of red, green, blueness and white picture.
In one embodiment of the invention, above-mentioned region to be corrected and observation reference zone are same LED display
Adjacent area.
In one embodiment of the invention, the above-mentioned LED display bright chroma bearing calibration based on human eye vision is also
Including step：Change the region to be corrected and observation reference zone shows the first correction picture for the correction picture of display second
Face is set to the initial bright chroma correction coefficient average for eye-observation and by bright chroma correction coefficient average after the amendment,
And step (c) to (e) is performed again；The color of wherein described second correction picture is different from the face of the described first correction picture
Color.
In one embodiment of the invention, above-mentioned steps (c) include：Response is because of the institute shown to the region to be corrected
Multiple component values in the color model that the first correction picture carries out component regulation operation and inputted are stated, by the multiple of the input
Component value is converted into the RGB component value in RGB color model；And according to being calculated the RGB component value being converted to
Bright chroma correction coefficient average after the amendment in region to be corrected.
A kind of in addition, LED display bright chroma correction system bag based on human eye vision that the embodiment of the present invention proposes
Include：Bright chroma correction coefficient is equal after initial bright chroma correction coefficient average acquisition module, correction picture display control module, amendment
It is worth computing module and regulation matrix computations module.Wherein, initial bright chroma correction coefficient average acquisition module is treated for acquisition
The initial bright chroma correction coefficient average of correcting area；Correction picture display control module be used to controlling the region to be corrected and
Observe the correction picture that reference zone shows same color；Bright chroma correction coefficient mean value computation module after amendment, for responding
It is multiple in the color model inputted by the correction picture progress component regulation operation shown to the region to be corrected
Component value, bright chroma correction coefficient average after the amendment in the region to be corrected is calculated；And regulation matrix computations module
For going out to adjust square using bright chroma correction coefficient mean value computation after the initial bright chroma correction coefficient average and the amendment
Battle array, bright chroma after the amendment in the region to be corrected is obtained for acting on multiple LED pixel points in the region to be corrected
Correction coefficient.
In one embodiment of the invention, bright chroma correction coefficient mean value computation module turns including component after above-mentioned amendment
Change submodule and mean value computation submodule.Wherein, component transform subblock is used to respond because showing the region to be corrected
Multiple component values in the color model that the correction picture carries out component regulation operation and inputted, by multiple points of the input
Value is converted into the RGB component value in RGB color model；Mean value computation submodule is used for according to the RGB component value being converted to
Bright chroma correction coefficient average after the amendment in the region to be corrected is calculated.
In one embodiment of the invention, above-mentioned region to be corrected and observation reference zone are same LED display
Adjacent area.
In one embodiment of the invention, above-mentioned correction picture is sprite, and the sprite is selected from
One of red, green, blueness and white picture.
From the foregoing, it will be observed that the embodiment of the present invention is adjusted based on human eye vision, can by a variety of different components regulation operations come
Quick amendment LED bright chroma correction coefficient, eliminates interregional bright chroma difference；It can have the advantages that：1) can make
The LED of bright chroma difference reaches the highly consistent of bright chroma on human eye vision between domain of the existence；2) conventional correction can departed from
Interregional bright chroma regulation is completed in the case of equipment；3) greatly shorten regulation and expend the time, improve correction efficiency.
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, because it should refer to
Appended claims.It should also be noted that unless otherwise noted, it is not necessary to which scale accompanying drawing, they only try hard to concept
Ground illustrates structure and flow described herein.
Brief description of the drawings
The step of Fig. 1 is the LED display bright chroma bearing calibration based on human eye vision of first embodiment of the invention
Schematic flow sheet.
The step of Fig. 2 is the LED display bright chroma bearing calibration based on human eye vision of second embodiment of the invention
Schematic flow sheet.
Fig. 3 is that the LED display bright chroma based on human eye vision of third embodiment of the invention corrects the module of system
Schematic diagram.
After Fig. 4 is the amendment in the LED display bright chroma correction system based on human eye vision of the embodiment of the present invention
The submodule schematic diagram of bright chroma correction coefficient mean value computation module.
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.
【First embodiment】
Referring to Fig. 1, it is the LED display bright chroma correction side based on human eye vision of first embodiment of the invention
The step schematic flow sheet of method.The LED display bright chroma bearing calibration of the present embodiment is suitable for application in including multiple splicings
The LED display of unit, and bearing calibration can perform after multiple concatenation units are spliced into LED display, also may be used
To perform before multiple concatenation units are spliced into LED display.And multiple concatenation units can be multiple LED boxes
(including one or more LED lamp panels) is for being spliced into LED display, or multiple LED lamp panels for being spliced into LED casees
Body, there is bright chroma difference in these concatenation units, and the LED display based on human eye vision of the present embodiment is bright between each other
Chromaticity correction method can be used for cancelling or compensating for existing bright chroma difference between concatenation unit.In brief, the present embodiment
The LED display bright chroma bearing calibration based on human eye vision be mainly used in elimination or the benefit of interregional bright chroma difference
Repay.
Hold it is above-mentioned, to realize the normal display of LED display such as LED display, it usually needs configuration LED display control
System processed with LED display to be connected.LED display control programs are mainly used in carrying out data format turn to video source signal
Change, deliver to each concatenation unit of LED display after the correction of gray scale layout and bright chroma and shown.Generally, LED is shown
Control system is greatly classified into synchronous control system and asynchronous control system.For synchronous control system, it mainly includes playing
Sending card function can be integrated into reception card by computer, sending card and reception card, or even some synchronous control systems；For asynchronous
Control system, it mainly includes asynchronous control-card and the reception card that may be needed；In addition, display data correction bright chroma school
Positive coefficient is normally stored in reception card or asynchronous control-card.
The LED display bright chroma based on human eye vision of first embodiment of the invention is corrected below in conjunction with Fig. 1
Method is described in detail, and is that dress is shown using the RGB full-color LED display screens being spliced by multiple LED boxes as LED
The citing put, bright chroma difference be present between these LED boxes (region), and be configured with synchronous control system；But the present invention is not
As limit.
Step S110：Obtain the initial bright chroma correction coefficient average avg1 in region to be corrected.In the present embodiment, in order to keep away
Exempt from the read-write operation that all LED pixels in region to be corrected light chromaticity correction coefficient, initial bright chroma correction coefficient average
Avg1 calculating is performed by receiving card or sending card, and it treats the bright chroma correction of all LED pixel points in correcting area
Coefficient carries out mean value computation operation：
Wherein, avg1 is the initial bright chroma correction coefficient average of all LED pixel points and be one 3 in region to be corrected
× 3 coefficient matrixes, redRi、redGi、redBiFor i-th LEDs red image R, G, B three-component correction coefficient value, greenRi、
greenGi、greenBiFor i-th LEDs green image R, G, B three-component correction coefficient value, blueRi、blueGi、blueBiFor i-th
LEDs blue image R, G, B three-component correction coefficient value, i take 1 ..., n；N is that LED pixel is counted out in region to be corrected.Need
It is noted that the alternative solution for calculating the initial bright chroma correction coefficient average avg1 in region to be corrected has a lot, such as utilize
The bright chroma correction coefficient of the single led pixel of regional center to be corrected represents the initial bright chroma correction coefficient in region to be corrected
Average, or light chromaticity correction Coefficient Mean using LED pixel in region neighborhood to be corrected and represent the first of region to be corrected
Beginning bright chroma correction coefficient average etc..Afterwards, the initial bright chroma correction coefficient average avg1 in region to be corrected is being calculated
Afterwards, host computer will be sent to avg1 to use for follow-up.Further it will be understood that treat all LED in correcting area
The initial bright chroma correction coefficient of pixel, which carries out mean value computation, to be carried out in host computer.
Step S130：Control region to be corrected and observe the correction picture that reference zone shows same color, for example, it is all aobvious
Show the sprites such as red picture, green picture, blue picture or white picture.In the present embodiment, observation reference zone is for example
Be to belong to same LED display with region to be corrected, and preferably, compare for the ease of eye-observation, region to be corrected and
It is the region being placed adjacent to observe reference zone.Further, it is to be appreciated that in multiple regions to be corrected to LED display
During entering line brightness/chrominance correction, observation reference zone can be same region or different regions.
Step S150：Respond what the correction picture shown because treating correcting area carried out RGB component regulation operation and inputted
RGB component value in RGB color model, bright chroma correction coefficient average avg2 after the amendment in region to be corrected is calculated.This
In embodiment, after the correction picture that same color is shown by eye-observation, in order that the correction picture that region to be corrected is shown
The bright chroma of the correction picture shown with observation reference zone reaches unanimity, it is necessary to be carried out to the RGB component in RGB color model
Regulation, change each element value in initial bright chroma correction coefficient average avg1 with this is with bright chroma correction after correct
Number average avg2 (it typically is with avg1 size identical coefficient matrixes, such as also be 3 × 3 coefficient matrixes), and then change is treated
The display effect for the correction picture that correcting area is shown.Because all colours are produced by tri- kinds of color component mixing of RGB, because
This adjusts corresponding RGB component when region to be corrected shows the different colours such as red, green, blueness, white and namely adjusts RGB
Proportioning, and tri- kinds of color components of RGB all correspond to three elements in bright chroma correction coefficient average.
Step S170：Utilize bright chroma correction coefficient average avg2 after initial bright chroma correction coefficient average avg1 and amendment
Calculate regulation matrix A djust.Regulation matrix A djust in the present embodiment is by initial bright chroma correction coefficient average avg1
It is transformed into the matrix of bright chroma correction coefficient average avg2 after correcting.
Step S190：Regulation matrix A djust is acted on into multiple LED pixel points in region to be corrected and obtained to be corrected
Bright chroma correction coefficient after the amendment in region.Here, regulation matrix A djust is, for example, to be sent by host computer to Synchronization Control system
The sending card of system receives card, and the initial bright chroma correction coefficient matrix of each LED pixel point is calculated by sending card or reception calorimeter
Product with adjusting matrix A djust, and then using the Fruiting coefficient matrix of each LED pixel point as bright chroma school after its amendment
Positive coefficient, so as to realize the overall variation of all LED pixel point bright chromas in the region to be corrected：
Resulti Originali*Adjust
Wherein, ReslutiFor i-th of LED pixel point Fruiting coefficient matrix, OriginaliIt is initial for i-th of LED pixel point
Bright chroma correction coefficient matrix, Adjust are regulation matrix；I takes 1 ..., n；N is that LED pixel is counted out in region to be corrected.When
After the Fruiting coefficient matrix of each LED pixel point right or that region to be corrected is calculated in host computer is as its amendment
Bright chroma correction coefficient, retransmited after the completion of calculating to card is received to replace initial bright chroma correction coefficient.Afterwards, due to amendment
The calibration result of bright chroma correction coefficient afterwards, human eye can observe that the correction picture that region to be corrected is shown changes；Again
The correction picture shown by the correction picture after eye-observation regional change to be corrected with observation reference zone whether there is can
The bright chroma difference perceived, if it is present for current color correction picture, repeat the above steps, if it does not exist, then
Represent that current color correction Picture Calibration is completed, carry out the correction of next color correction picture.
It is noted that to simplify operation, it will usually control region to be corrected and observation reference zone first to show a certain
Same color corrects for example red picture of picture, and regulation matrix A djust makes to be corrected obtained from being adjusted as RGB component
The red picture that region is shown and the red picture that show of observation reference zone are bright in the absence of perceiving on human eye vision
Colourity difference, then control changes region to be corrected and observation reference zone shows that another same color correction picture such as green is drawn
Bright chroma correction coefficient average avg2 once corrects behaviour after setting conduct after the amendment that face and a preceding correct operation obtain
The initial bright chroma correction coefficient average avg1 made；By that analogy, it is the red that shows until region to be corrected, green, blueness, white
The corresponding color picture that the pictures such as color are shown with observation reference zone can not perceive bright chroma difference on human eye vision and be
Only, that is, the bright chroma correction in above-mentioned region to be corrected is completed.It is understood that above-mentioned red, green, blueness and white picture
Display order be not limited；For other regions to be corrected of LED display, then above-mentioned aligning step is referred to, herein not
Repeat again.
【Second embodiment】
Referring to Fig. 2, it is the LED display bright chroma correction side based on human eye vision of second embodiment of the invention
The step schematic flow sheet of method.The LED display bright chroma bearing calibration of the present embodiment is suitable for application in including multiple splicings
The LED display of unit, and bearing calibration can perform after multiple concatenation units are spliced into LED display, also may be used
To perform before multiple concatenation units are spliced into LED display.And multiple concatenation units can be multiple LED boxes
(including one or more LED lamp panels) is for being spliced into LED display, or multiple LED lamp panels for being spliced into LED casees
Body, there is bright chroma difference in these concatenation units, and the LED display based on human eye vision of the present embodiment is bright between each other
Chromaticity correction method can be used for cancelling or compensating for existing bright chroma difference between concatenation unit.In brief, the present embodiment
The LED display bright chroma bearing calibration based on human eye vision be mainly used in elimination or the benefit of interregional bright chroma difference
Repay.
Hold it is above-mentioned, to realize the normal display of LED display such as LED display, it usually needs configuration LED display control
System processed with LED display to be connected.LED display control programs are mainly used in carrying out data format turn to video source signal
Change, deliver to each concatenation unit of LED display after the correction of gray scale layout and bright chroma and shown.Generally, LED is shown
Control system is greatly classified into synchronous control system and asynchronous control system.For synchronous control system, it mainly includes playing
Sending card function can be integrated into reception card by computer, sending card and reception card, or even some synchronous control systems；For asynchronous
Control system, it mainly includes asynchronous control-card and the reception card that may be needed；In addition, display data correction bright chroma school
Positive coefficient is normally stored in reception card or asynchronous control-card.
The LED display bright chroma based on human eye vision of second embodiment of the invention is corrected below in conjunction with Fig. 2
Method is described in detail, and is that dress is shown using the RGB full-color LED display screens being spliced by multiple LED boxes as LED
The citing put, bright chroma difference be present between these LED boxes (region), and be configured with synchronous control system；But the present invention is not
As limit.
Step S210：Obtain the initial bright chroma correction coefficient average avg1 in region to be corrected.In the present embodiment, in order to keep away
Exempt from the read-write operation that all LED pixels in region to be corrected light chromaticity correction coefficient, initial bright chroma correction coefficient average
Avg1 calculating is performed by receiving card or sending card, and it treats the bright chroma correction of all LED pixel points in correcting area
Coefficient carries out mean value computation operation：
Wherein, avg1 is the initial bright chroma correction coefficient average of all LED pixel points and be one 3 in region to be corrected
× 3 coefficient matrixes, redRi、redGi、redBiFor i-th LEDs red image R, G, B three-component correction coefficient value, greenRi、
greenGi、greenBiFor i-th LEDs green image R, G, B three-component correction coefficient value, blueRi、blueGi、blueBiFor i-th
LEDs blue image R, G, B three-component correction coefficient value, i take 1 ..., n；N is that LED pixel is counted out in region to be corrected.Need
It is noted that the alternative solution for calculating the initial bright chroma correction coefficient average avg1 in region to be corrected has a lot, such as utilize
The bright chroma correction coefficient of the single led pixel of regional center to be corrected represents the initial bright chroma correction coefficient in region to be corrected
Average, or light chromaticity correction Coefficient Mean using LED pixel in region neighborhood to be corrected and represent the first of region to be corrected
Beginning bright chroma correction coefficient average etc..Afterwards, the initial bright chroma correction coefficient average avg1 in region to be corrected is being calculated
Afterwards, host computer will be sent to avg1 to use for follow-up.Further it will be understood that treat all LED in correcting area
The initial bright chroma correction coefficient of pixel, which carries out mean value computation, to be carried out in host computer.
Step S230：Control region to be corrected and observe the correction picture that reference zone shows same color, for example, it is all aobvious
Show the sprites such as red picture, green picture, blue picture or white picture.In the present embodiment, observation reference zone is for example
Be to belong to same LED display with region to be corrected, and preferably, compare for the ease of eye-observation, region to be corrected and
It is the region being placed adjacent to observe reference zone.Further, it is to be appreciated that in multiple regions to be corrected to LED display
During entering line brightness/chrominance correction, observation reference zone can be same region or different regions.
Step S250a：Respond what the correction picture shown because treating correcting area carried out HSI components regulation operation and inputted
HSI component values in HSI color model, the RGB component value HSI component values of input being converted into RGB color model.This reality
Apply in example, after the correction picture that same color is shown by eye-observation, in order that the correction picture that show of region to be corrected with
The bright chroma of correction picture that observation reference zone is shown reaches unanimity, according to the custom of user to HSI (Hue (tone),
Saturation (color saturation), Intensity (brightness)) the HSI components in color model are adjusted, are changed initially with this
Each element value in bright chroma correction coefficient average avg1 is with bright chroma correction coefficient average avg2, Jin Ergai after being corrected
Become the display effect for the correction picture that region to be corrected is shown.Because all colours are all by tri- kinds of color component mixing productions of RGB
It is raw, therefore adjust corresponding RGB component when region to be corrected shows the different colours such as red, green, blueness, white and namely adjust
RGB proportionings are saved, and tri- kinds of color components of RGB all correspond to three elements in bright chroma correction coefficient average.And HSI components with
Certain mapping relations, such as following formula between RGB component be present：
If 0≤H<120 °, then
If 120 °≤H<240 °, then
If 240 °≤H<360 °, then
Step S250b：Bright chroma corrects after the amendment in region to be corrected is calculated in RGB component value according to being converted to
Coefficient Mean avg2.In the present embodiment, bright chroma correction coefficient average avg2 is usually and corrects to be with initial bright chroma after amendment
Number average avg1 size identical coefficient matrixes, such as be also 3 × 3 coefficient matrixes.
Step S270：Utilize bright chroma correction coefficient average avg2 after initial bright chroma correction coefficient average avg1 and amendment
Calculate regulation matrix A djust.Regulation matrix A djust in the present embodiment is by initial bright chroma correction coefficient average avg1
It is transformed into the matrix of bright chroma correction coefficient average avg2 after correcting.
Step S290：Regulation matrix A djust is acted on into multiple LED pixel points in region to be corrected and obtained to be corrected
Bright chroma correction coefficient after the amendment in region.Here, regulation matrix A djust is, for example, to be sent by host computer to Synchronization Control system
The sending card of system receives card, and the initial bright chroma correction coefficient matrix of each LED pixel point is calculated by sending card or reception calorimeter
Product with adjusting matrix A djust, and then using the Fruiting coefficient matrix of each LED pixel point as bright chroma school after its amendment
Positive coefficient, so as to realize the overall variation of all LED pixel point bright chromas in the region to be corrected：
Resulti=Originali*Adjust
Wherein, ReslutiFor i-th of LED pixel point Fruiting coefficient matrix, OriginaliIt is initial for i-th of LED pixel point
Bright chroma correction coefficient matrix, Adjust are regulation matrix；I takes 1 ..., n；N is that LED pixel is counted out in region to be corrected.When
After the Fruiting coefficient matrix of each LED pixel point right or that region to be corrected is calculated in host computer is as its amendment
Bright chroma correction coefficient, retransmited after the completion of calculating to card is received to replace initial bright chroma correction coefficient.Afterwards, due to amendment
The calibration result of bright chroma correction coefficient afterwards, human eye can observe that the correction picture that region to be corrected is shown changes；Again
The correction picture shown by the correction picture after eye-observation regional change to be corrected with observation reference zone whether there is can
The bright chroma difference perceived, if it is present for current color correction picture, repeat the above steps, if it does not exist, then
Represent that current color correction Picture Calibration is completed, carry out the correction of next color correction picture.
It is noted that to simplify operation, it will usually control region to be corrected and observation reference zone first to show a certain
Same color corrects for example red picture of picture, and regulation matrix A djust makes to be corrected obtained from being adjusted as RGB component
The red picture that region is shown and the red picture that show of observation reference zone are bright in the absence of perceiving on human eye vision
Colourity difference, then control changes region to be corrected and observation reference zone shows that another same color correction picture such as green is drawn
Bright chroma correction coefficient average avg2 once corrects behaviour after setting conduct after the amendment that face and a preceding correct operation obtain
The initial bright chroma correction coefficient average avg1 made；By that analogy, it is the red that shows until region to be corrected, green, blueness, white
The corresponding color picture that the pictures such as color are shown with observation reference zone can not perceive bright chroma difference on human eye vision and be
Only, that is, the bright chroma correction in above-mentioned region to be corrected is completed.It is understood that above-mentioned red, green, blueness and white picture
Display order be not limited；For other regions to be corrected of LED display, then above-mentioned aligning step is referred to, herein not
Repeat again.
【3rd embodiment】
Referring to Fig. 3, its correction of the LED display bright chroma based on human eye vision system for third embodiment of the invention
The module diagram of system.As shown in figure 3, the LED display bright chroma correction system 300 based on human eye vision is, for example, by pacifying
Software loaded on computer system realized, such as broadcasting computer installed in synchronous control system or link are played and calculated
In other computer systems of machine, or it is mounted in the computer system of the asynchronous control-card of connection asynchronous control system
In.
Specifically, the correction of the LED display bright chroma based on the human eye vision system 300 of the present embodiment includes：Initially
Bright chroma correction coefficient is equal after bright chroma correction coefficient average acquisition module 310, correction picture display control module 330, amendment
It is worth computing module 350 and regulation matrix computations module 370.Wherein, initial bright chroma correction coefficient average acquisition module 310 is used
In the initial bright chroma correction coefficient average avg1 for obtaining region to be corrected, detail refers to the step of aforementioned first embodiment
Rapid S110 and second embodiment step S210.Correction picture display control module 330 is used to control region to be corrected and observation
Reference zone shows the correction picture of same color, and detail refers to the step S130 and second of aforementioned first embodiment in fact
Apply the step S230 of example.Bright chroma correction coefficient mean value computation module 350 is used to respond and shown because treating correcting area after amendment
Correction picture carry out component regulation operation and input color model in multiple component values, region to be corrected is calculated
Bright chroma correction coefficient average avg2 after amendment, the step S150 and second that detail refers to aforementioned first embodiment are implemented
The step S250a and S250b of example.Adjust matrix computations module 370 be used for using initial bright chroma correction coefficient average avg1 and
Bright chroma correction coefficient average avg2 calculates regulation matrix A djust after amendment, for subsequently acting on the more of region to be corrected
Individual LED pixel point and obtain bright chroma correction coefficient after the amendment in region to be corrected, detail refer to it is foregoing first implement
The step S170 and S190 of example and the step S270a and S290 of second embodiment.
In addition, in other embodiments, such as shown in Fig. 4, bright chroma correction coefficient mean value computation module 350 is gone back after amendment
Including component transform subblock 3501 and mean value computation submodule 3503.Wherein, component transform subblock 3501 be used for respond because
Multiple component values in the color model that the correction picture that correcting area is shown carries out component regulation operation and inputted are treated, will be defeated
The multiple component values entered are converted into the RGB component value in RGB color model, and detail refers to the step of above-mentioned second embodiment
Rapid S250a.Mean value computation submodule 3503 is used for the amendment that region to be corrected is calculated according to the RGB component value being converted to
Bright chroma correction coefficient average avg2 afterwards, detail refer to the step S250b of above-mentioned second embodiment.
In summary, the embodiment of the present invention is adjusted based on human eye vision, can by a variety of different components regulation operations come
Quick amendment LED bright chroma correction coefficient, eliminates interregional bright chroma difference；It can have the advantages that：1) can make
The LED of bright chroma difference reaches the highly consistent of bright chroma on human eye vision between domain of the existence；2) conventional correction can departed from
Interregional bright chroma regulation is completed in the case of equipment；3) greatly shorten regulation and expend the time, improve correction efficiency.
Specific case used herein to LED display bright chroma bearing calibration of the present invention based on human eye vision and
The principle and embodiment of system are set forth, the explanation of above example be only intended to help the method for understanding the present invention and
Its core concept；Meanwhile for those of ordinary skill in the art, according to the thought of the present invention, in embodiment and answer
With there will be changes in scope, in summary, this specification content should not be construed as limiting the invention, of the invention
Protection domain should be defined by appended claim.
Claims (10)
1. a kind of LED display bright chroma bearing calibration based on human eye vision, it is characterised in that including step：
(a) the initial bright chroma correction coefficient average in region to be corrected is calculated；
(b) region to be corrected and observation reference zone is controlled to show that the first correction picture of same color supplies eye-observation；
(c) face that response carries out component regulation operation and inputted by the first correction picture shown to the region to be corrected
Multiple component values in color model, bright chroma correction coefficient average after the amendment in the region to be corrected is calculated；
(d) regulation is gone out using bright chroma correction coefficient mean value computation after the initial bright chroma correction coefficient average and the amendment
Matrix；
(e) the regulation matrix is acted on into multiple LED pixel points in the region to be corrected and obtains the region to be corrected
Amendment after bright chroma correction coefficient.
2. the LED display bright chroma bearing calibration based on human eye vision as claimed in claim 1, it is characterised in that institute
It is sprite to state the first correction picture.
3. the LED display bright chroma bearing calibration based on human eye vision as claimed in claim 2, it is characterised in that institute
State sprite and be selected from one of red, green, blueness and white picture.
4. the LED display bright chroma bearing calibration based on human eye vision as claimed in claim 1, it is characterised in that institute
State the adjacent area of region to be corrected and the observation reference zone for same LED display.
5. the LED display bright chroma bearing calibration based on human eye vision as claimed in claim 1, it is characterised in that also
Including step：
Change the region to be corrected and observation reference zone shows that the first correction picture supplies for the correction picture of display second
Eye-observation and bright chroma correction coefficient average after the amendment is set to the initial bright chroma correction coefficient average, and again
Secondary execution step (c) to (e)；The color of wherein described second correction picture is different from the color of the described first correction picture.
6. the LED display bright chroma bearing calibration based on human eye vision as claimed in claim 1, it is characterised in that institute
Stating step (c) includes：
Respond because of multiple component values in the color model that component adjusts operation and inputs, multiple component values of the input are turned
Change the RGB component value in RGB color model into；And
Bright chroma correction coefficient average after the amendment in the region to be corrected is calculated in RGB component value according to being converted to.
A kind of 7. LED display bright chroma correction system based on human eye vision, it is characterised in that including：
Initial bright chroma correction coefficient average acquisition module, the initial bright chroma correction coefficient for obtaining region to be corrected are equal
Value；
Picture display control module is corrected, for controlling the region to be corrected and observing the school of reference zone display same color
Positive picture；
Bright chroma correction coefficient mean value computation module after amendment, for responding because of the correction shown to the region to be corrected
Multiple component values in the color model that picture carries out component regulation operation and inputted, are calculated repairing for the region to be corrected
Bright chroma correction coefficient average after just；And
Matrix computations module is adjusted, for being corrected using bright chroma after the initial bright chroma correction coefficient average and the amendment
Coefficient Mean calculates regulation matrix, obtains described treating school for acting on multiple LED pixel points in the region to be corrected
Bright chroma correction coefficient after the amendment of positive region.
8. the LED display bright chroma correction system based on human eye vision as claimed in claim 7, it is characterised in that institute
Bright chroma correction coefficient mean value computation module includes after stating amendment：
Component transform subblock, for responding because the correction picture shown to the region to be corrected carries out component regulation behaviour
Multiple component values in the color model made and inputted, multiple component values of the input are converted into RGB color model
RGB component value；
Mean value computation submodule, after the amendment in the region to be corrected is calculated according to the RGB component value being converted to
Bright chroma correction coefficient average.
9. the LED display bright chroma correction system based on human eye vision as claimed in claim 7, it is characterised in that institute
State region to be corrected and observe the adjacent area that reference zone is same LED display.
10. the LED display bright chroma correction system based on human eye vision as claimed in claim 7, it is characterised in that institute
It is sprite to state correction picture, and the sprite is selected from one of red, green, blueness and white picture.
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| CN107256689B (en) * | 2016-11-09 | 2020-09-18 | 长春希达电子技术有限公司 | Uniformity repairing method for LED display screen after brightness correction |
| CN106920506B (en) * | 2017-04-27 | 2019-10-29 | 西安诺瓦星云科技股份有限公司 | Check the method and device of cabinet calibration result |
| CN110277054B (en) * | 2019-07-23 | 2021-01-15 | 中国科学院长春光学精密机械与物理研究所 | Multi-gray-scale correction method for LED display screen |
| CN115398521A (en) * | 2020-03-31 | 2022-11-25 | 西安诺瓦星云科技股份有限公司 | System, method and device for image processing |
| TWI720893B (en) * | 2020-05-19 | 2021-03-01 | 華碩電腦股份有限公司 | Color-mixing lighting control method and color-mixing lighting system |
| CN112637579A (en) * | 2020-11-04 | 2021-04-09 | 康佳集团股份有限公司 | Method and system for correcting Micro LED depth color |
| CN114596809B (en) * | 2020-11-19 | 2023-11-14 | 西安诺瓦星云科技股份有限公司 | Display screen brightness correction method and device based on mobile terminal |
| CN114170941B (en) * | 2021-12-09 | 2023-10-31 | 惠州华星光电显示有限公司 | Display brightness matching method and display |
| CN113920037B (en) * | 2021-12-14 | 2022-04-12 | 极限人工智能有限公司 | Endoscope picture correction method, device, correction system and storage medium |
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| JP3775666B2 (en) * | 2002-03-18 | 2006-05-17 | セイコーエプソン株式会社 | Image display device |
| JP4934621B2 (en) * | 2008-03-26 | 2012-05-16 | 株式会社ナナオ | Correction method, display device, and computer program |
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