CN109637434A - Bearing calibration, correction system and the machine readable storage medium of mosaic display screen - Google Patents
Bearing calibration, correction system and the machine readable storage medium of mosaic display screen Download PDFInfo
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- CN109637434A CN109637434A CN201811642090.9A CN201811642090A CN109637434A CN 109637434 A CN109637434 A CN 109637434A CN 201811642090 A CN201811642090 A CN 201811642090A CN 109637434 A CN109637434 A CN 109637434A
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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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Abstract
The present invention relates to a kind of bearing calibration of mosaic display screen, correction system and machine readable storage mediums, wherein bearing calibration, the correction after LED display unit is replaced for mosaic display screen, comprising: obtain the original calibration coefficient and adjustment factor of LED display unit to be corrected；According to the original calibration coefficient and adjustment factor of the LED display unit to be corrected, the work correction coefficient of LED display unit to be corrected is calculated.After the LED display unit in replacement mosaic display screen, it only needs to be adjusted using original calibration coefficient of the adjustment factor to the LED display unit of replacement, work correction coefficient needed for work can be obtained, it does not need to carry out pointwise correction to the entire mosaic display screen after maintenance, the correction of single led display unit rank may be implemented, while guaranteeing to show quality conformance, the quick correction of mosaic display screen after replacement LED display unit may be implemented, improve maintenance efficiency.
Description
Technical field
The present invention relates to LED display fields, can more particularly to the bearing calibration of mosaic display screen, correction system and machine
Read storage medium.
Background technique
Because LED has the characteristics that low energy consumption, high brightness, high refresh rate, LED is shown in more and more scenes and obtains
To the scenes such as application, especially monitoring center, airport, traffic guidance, outdoor display.In actual use, generally by multiple small
LED display unit is spliced to form a large-sized LED mosaic display screen.
Currently, the display quality requirement that client shows LED is higher and higher.Not only need to show LED in production link
Unit is corrected；After installation splicing, it is also desirable to carry out pointwise correction to entire LED mosaic display screen.After coming into operation, when
Some LED display unit in LED mosaic display screen when something goes wrong, the general replacement LED display unit, and to maintenance after
Entire LED mosaic display screen carry out pointwise correction again, with guarantee replacement after LED display unit brightness, coloration and LED
Other LED display units are consistent in mosaic display screen, meet display quality requirement.But when maintenance, to entire LED
Mosaic display screen carries out the operation of pointwise correction, time-consuming too long, has seriously affected maintenance efficiency.
Summary of the invention
Based on this, it is necessary to be corrected after being repaired for existing LED mosaic display screen to entire screen, existing efficiency
Low problem proposes bearing calibration, correction system and the storage medium of a kind of new mosaic display screen.
One embodiment of the invention provides a kind of bearing calibration of mosaic display screen, comprising:
Obtain the original calibration coefficient and adjustment factor of LED display unit to be corrected；
According to the original calibration coefficient and adjustment factor of the LED display unit to be corrected, it is aobvious that LED to be corrected is calculated
Show the work correction coefficient of unit.
In some embodiments, the step of the original calibration coefficient for obtaining LED display unit to be corrected and adjustment factor
Before rapid, further includes:
The data of picture are shown according to mosaic display screen, calculate adjustment factor；
The data that picture is shown according to mosaic display screen calculate adjustment factor step and specifically include:
It controls mosaic display screen and shows white balance picture and tricolor frame；
Obtain the picture image that mosaic display screen shows white balance picture and tricolor frame, wherein picture image is at least
Region including LED display unit to be corrected and its surrounding predetermined width；
The corresponding region to be corrected of LED display unit to be corrected is identified from picture image；
According to the image information in region to be corrected in picture image and the image information in non-region to be corrected, adjustment is calculated
Coefficient.
In some embodiments, described that the corresponding area to be corrected of LED display unit to be corrected is identified from picture image
The step of domain, specifically,
Based on Luminance Analysis, the corresponding region to be corrected of LED display unit to be corrected is identified from picture image.
In some embodiments, the step of the original calibration coefficient for obtaining LED display unit to be corrected and adjustment factor
Before rapid, further includes:
According to the use duration and attenuation model of mosaic display screen, adjustment factor is calculated.
In some embodiments, the original calibration coefficient includes original brightness correction coefficient and original colorimetric correction system
Number, the adjustment factor includes brightness regulation coefficient and coloration adjustment factor.
In some embodiments, the LED display unit to be corrected is divided into several display areas, each display area
Corresponding independent regulation coefficient.
One embodiment of the invention additionally provides a kind of correction system, after mosaic display screen replacement LED display unit
Correction, comprising:
Coefficient obtains module, for obtaining the original calibration coefficient and adjustment factor of LED display unit to be corrected；
Correction coefficient adjusts module, for the original calibration coefficient and adjustment factor according to LED display unit to be corrected, meter
Calculation obtains the work correction coefficient of LED display unit to be corrected.
In some embodiments, the correction system further includes adjustment factor computing module, for according to mosaic display screen
It shows the data of picture, calculates adjustment factor；
The adjustment factor computing module, specifically includes:
Picture control unit shows white balance picture and tricolor frame for controlling mosaic display screen；
Image acquisition unit shows the picture image of white balance picture and tricolor frame for obtaining mosaic display screen,
Wherein, picture image includes at least the region of LED display unit to be corrected and its surrounding predetermined width；
Correcting area recognition unit, for identifying that LED display unit to be corrected is corresponding to be corrected from picture image
Region；
Regulation coefficient computing unit, for according to region to be corrected in picture image image information and non-area to be corrected
The image information in domain calculates regulation coefficient.
In some embodiments, the correction system further includes adjustment factor computing module, for according to mosaic display screen
Use duration and attenuation model, calculate adjustment factor.
Another embodiment of the present invention additionally provides a kind of machine readable storage medium, is stored thereon with computer program,
Described in computer program realize the bearing calibration of mosaic display screen above-mentioned when executed by the processor.
The bearing calibration of mosaic display screen provided in this embodiment, replacement mosaic display screen in LED display unit it
Afterwards, it is only necessary to be adjusted, be can be obtained needed for work using original calibration coefficient of the adjustment factor to the LED display unit of replacement
Work correction coefficient, do not need to after maintenance entire mosaic display screen carry out pointwise correction, single led display may be implemented
Mosaic display screen after replacement LED display unit may be implemented while guaranteeing to show quality conformance in the other correction of cell level
Quick correction, improve maintenance efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of mosaic display screen；
Fig. 2 is the flow diagram of the bearing calibration of the mosaic display screen of one embodiment of the invention；
Fig. 3 is the flow diagram of the bearing calibration of the mosaic display screen of another embodiment of the present invention；
Fig. 4 is the refinement flow diagram of step S100 in Fig. 3；
Fig. 5 is the flow diagram of the bearing calibration of the mosaic display screen of further embodiment of this invention；
Fig. 6 is the structural schematic diagram of the correction system of one embodiment of the invention.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real
Applying mode, the present invention will be described in detail.It should be noted that in the absence of conflict, presently filed embodiment and reality
The feature applied in mode can be combined with each other.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.
As shown in Figure 1, mosaic display screen is spliced by multiple LED display units 100.LED display unit 100 includes aobvious
Display screen body, control unit 130, control unit 130 are connect with display screen body communication.Control unit 130 can be with Background control system
System communication connection；It can also be communicated to connect with the control unit 130 of other LED display units, such as all LED display units
100 control unit 130 is all connected in a bus, then is connect by the bus with background control system.
It is no longer aobvious to entire splicing after being replaced when the LED display unit of some position, such as LED display unit X-Y
Display screen carries out pointwise correction operation, by control unit or background control system, only (i.e. more to LED display unit to be corrected
LED display unit after changing) original calibration coefficient be adjusted, obtain the work correction coefficient of LED display unit to be corrected.
Later, LED display unit (LED display unit after replacing) to be corrected works according to work correction coefficient.Compared with
While guaranteeing well to show quality, the correction of the mosaic display screen after replacement LED display unit can be fast implemented.In the following,
With regard to the bearing calibration of mosaic display screen, it is specifically described.
As shown in Fig. 2, the bearing calibration for the mosaic display screen that one embodiment of the invention provides, is replaced for mosaic display screen
Correction after LED display unit, comprising:
S300 obtains the original calibration coefficient and adjustment factor of LED display unit to be corrected.
LED display unit to be corrected will do it correction in factory quality inspection links, each inside LED display unit to ensure
Pixel brightness, in terms of consistency.Thus obtained correction coefficient, as original calibration coefficient are each pixels
The set of the correction coefficient value of point.Original calibration coefficient is typically stored in the control unit 130 of LED display unit, for example deposits
Store up the flash memory in control unit 130.Therefore, each LED display unit to be corrected, is stored with original calibration coefficient.It can
To obtain original calibration coefficient from LED display unit to be corrected, for example read from the flash memory of control unit 130.
It is understood that original calibration coefficient, also can store on the storage device except LED display unit, than
It is such as provided with original calibration coefficient data library in background control system, is stored with the original calibration system of all LED display units
Number；Or original calibration coefficient is stored on a flash memory device.When storing correction coefficient, correspondence can be stored simultaneously
The characteristic value of LED display unit, such as the character string etc. of characterization identity, the original calibration system of target is retrieved with fast and easy
Number.As a result, the corresponding original of LED display unit to be corrected can also be read from the storage device for being stored with original calibration coefficient
Beginning correction coefficient.
Adjustment factor can be obtained or be manually entered from background control system, can also show picture according to mosaic display screen
Face is obtained using duration calculation.Adjustment factor is for being adjusted original calibration coefficient, to obtain work correction coefficient,
The display quality of LED display unit to be corrected and the display quality of other LED display units of mosaic display screen is allowed to keep basic
Unanimously.
Original calibration coefficient may include original brightness correction coefficient and original colorimetric correction coefficient.Correspondingly, adjusting system
Number, can only include brightness regulation coefficient, to ensure that brightness aspect is met the requirements；Can also simultaneously include brightness regulation coefficient and
Coloration adjustment factor, to ensure that brightness and coloration aspect are all satisfied requirement.Exemplary, brightness regulation coefficient can be a value,
It is also possible to three values of corresponding RGB three primary colours.For the chromaticity correction coefficient value of a pixel, chromaticity correction coefficient
Value includes the combination of RGB three primary colours, the generally matrix of 3*3.Coloration adjustment factor can be three of corresponding RGB three primary colours
Value, is also possible to matrix identical with the dimension of chromaticity correction coefficient value, such as the matrix of 3*3.
For the entire display screen body of LED display unit to be corrected, the same coefficient value is can be used in adjustment factor.One
In a little embodiments, the display screen body of LED display unit to be corrected can be divided into mostly several display areas, for each viewing area
Domain, adjustment factor can use independent coefficient value, to allow between LED display unit to be corrected and the LED display unit of surrounding
Transition it is more steady.At this point, adjustment factor is the combination of multiple coefficient values.The display screen body of LED display unit to be corrected can
To be divided into two display areas, such as central display area and periphery display area.
LED to be corrected is calculated according to the original calibration coefficient and adjustment factor of LED display unit to be corrected in S500
The work correction coefficient of display unit.
After the original calibration coefficient and adjustment factor that obtain LED display unit to be corrected, i.e., using adjustment factor pair
Original calibration coefficient is adjusted, and obtains the work correction coefficient of LED display unit to be corrected.LED display unit to be corrected is
Work correction coefficient can be used to work.
About the adjustment carried out using adjustment factor to original calibration coefficient.Exemplary, adjustment factor includes brightness regulation
Coefficient, in general, the brightness of LED display unit to be corrected can be higher than the remaining LED display unit in mosaic display screen, at this point,
Brightness regulation coefficient can be the value lower than 1, such as 0.8.Original brightness correction coefficient can obtain object brightness multiplied by 0.8
Work correction coefficient can be obtained in conjunction with original colorimetric correction coefficient in correction coefficient.
Adjustment factor may include brightness regulation coefficient and coloration adjustment factor.The use of brightness regulation coefficient is referred to
The description of front.It is exemplary about the adjustment using coloration adjustment factor to original colorimetric correction coefficient, when coloration adjustment factor
When being three values of corresponding RGB three primary colours, the value that primary colours are corresponded in coloration adjustment factor is corresponding with original colorimetric correction coefficient
The correction coefficient value of primary colours is multiplied, and target colorimetric correction coefficient can be obtained；When coloration adjustment factor is corrected with original colorimetric
When the identical matrix of the dimension of coefficient value, matrix dot product is used therebetween, can be obtained, target colorimetric correction coefficient.
The bearing calibration of mosaic display screen provided in this embodiment, replacement mosaic display screen in LED display unit it
Afterwards, it is only necessary to be adjusted, be can be obtained needed for work using original calibration coefficient of the adjustment factor to the LED display unit of replacement
Work correction coefficient, do not need to after maintenance entire mosaic display screen carry out pointwise correction, single led display may be implemented
Mosaic display screen after replacement LED display unit may be implemented while guaranteeing to show quality conformance in the other correction of cell level
Quick correction, improve maintenance efficiency.
As shown in figure 3, in some embodiments, before step S300, can also include:
S100 shows the data of picture according to mosaic display screen, calculates adjustment factor.
The data of picture are shown by mosaic display screen, to calculate adjustment factor, can allow LED display unit to be corrected
Work correction coefficient is more in line with the actual conditions of mosaic display screen, promotes the consistency of display quality.
As shown in figure 4, step S100 is specifically included:
S110, control mosaic display screen show white balance picture and tricolor frame.
Control mosaic display screen shows white balance picture, RGB tricolor frame respectively, and brightness requirement can be arranged simultaneously.
Each LED display unit in mosaic display screen, including LED display unit to be corrected, can be set to unified luminance parameter, come
Carry out the display of white balance picture and tricolor frame.In some embodiments, each LED display unit in mosaic display screen,
Different luminance parameters can be set in LED display unit to be corrected and other LED display units.For example, LED to be corrected can allow
The edge of display unit uses higher luminance parameter, identifies LED display unit to be corrected to facilitate.
S130 obtains the picture image that mosaic display screen shows white balance picture and tricolor frame, wherein picture image
Including at least LED display unit to be corrected and its region of surrounding predetermined width.
Using equipment such as camera, CCD camera, light guns, obtains mosaic display screen and show white balance picture and three primary colours
Image when picture, as picture image.Picture image includes at least LED display unit to be corrected and its surrounding predetermined width
Region.Predetermined width can be actually needed and be set, for example, predetermined width can be the width of a LED display unit,
It is also possible to the width of several LED display units, can also be the certain proportion of the width of a LED display unit, such as
Half.In some embodiments, picture image also may include the region of entire mosaic display screen.
When there is 2 or 2 or more LED display units to be corrected on mosaic display screen, picture image may include institute
There is LED display unit to be corrected, picture image can also be obtained respectively to each LED display unit to be corrected.
S150 identifies the corresponding region to be corrected of LED display unit to be corrected from picture image.
Even if each LED display unit is set as unified luminance parameter, LED display unit to be corrected in mosaic display screen
Other LED display units with mosaic display screen still can have certain luminance difference in actual displayed.Therefore, it utilizes
Image analysis technology can identify the corresponding region to be corrected of LED display unit to be corrected from picture image.It is exemplary,
It can be based on Luminance Analysis, the corresponding region to be corrected of LED display unit to be corrected is identified from picture image.For example, meter
The average brightness for calculating picture image finds out region of the brightness higher than the average brightness of picture image, region as to be corrected.
It is exemplary, can also edge pixel point to LED display unit to be corrected higher brightness is set, for example, splicing
The picture of display screen uses 50% brightness, and 100% brightness is arranged in the edge pixel point of LED display unit to be corrected, in this way,
Based on luminance threshold, it can judge the edge pixel point of LED display unit to be corrected, obtain the boundary in region to be corrected, into
And identify region to be corrected.
It is understood that other image analysis technologies can also be used, to identify region to be corrected.
S170, according to the image information in region to be corrected in picture image and the image information in non-region to be corrected, meter
Calculate regulation coefficient.
In picture image, region except region to be corrected, as non-region to be corrected.When mosaic display screen have 2 or
When more LED display units to be corrected, as shown in Figure 1, LED display unit X-Y, LED display unit A-B are after replacing
LED display unit can be used as LED display unit to be corrected.Calculating some LED display units to be corrected, (for example LED is aobvious
Show unit X-Y) corresponding regulation coefficient when, it is corresponding that non-region to be corrected also needs to remove other LED display units to be corrected
Correcting area (the LED display unit A-B in such as figure).
Region to be corrected can be treated as to a pixel, one other pixel point is treated as in non-region to be corrected, according to point-by-point
The method of correction calculates regulation coefficient.At this point, calculating the average brightness value in region to be corrected, mean color coordinates；It calculates non-to school
The average brightness value of positive region, mean color coordinates, as target value.Then according to difference between the two, adjustment can be obtained
Coefficient.Non- region to be corrected it is non-to be corrected can also to be divided into multiple sons according to it in the specific location of region surrounding to be corrected
Region, region to be corrected are also divided into the display area of corresponding number, each display area and the non-region to be corrected of every height point
It is not considered as a pixel, according to the method for pointwise correction, calculates the corresponding regulation coefficient in each display area, then summarize
To the regulation coefficient of entire LED display unit to be corrected.
The bearing calibration of mosaic display screen provided in this embodiment, replacement mosaic display screen in LED display unit it
Afterwards, the picture data that white balance and three primary colours are shown using mosaic display screen, is calculated regulation coefficient, then uses adjustment factor
The original calibration coefficient of the LED display unit of replacement is adjusted, work correction coefficient, does not need needed for can obtaining work
Pointwise correction is carried out to the entire mosaic display screen after maintenance, the correction of single led display unit rank may be implemented, guaranteeing
While showing quality conformance, the quick correction of mosaic display screen after replacement LED display unit may be implemented, improve maintenance
Efficiency.
As shown in figure 5, in some embodiments, before step S300, can also include:
S200 calculates adjustment factor according to the use duration and attenuation model of mosaic display screen.
Three-primary color LED in mosaic display screen will appear different degrees of brightness and decline with the increase for using the time
Subtract.By burn-in test, or the decay statistic data based on actual use three-primary color LED, available three-primary color LED decline
Subtract model, characterization is different to correspond to different degrees of brightness decay value using duration.The three-primary color LED of different production batch, can be with
There is independent attenuation model.In general, a LED display unit is generallyd use with a batch of three-primary color LED, and therefore, one
LED display unit can use an attenuation model.If the LED display unit of mosaic display screen is all used with a batch of three
Primary-color LED, mosaic display screen can also use an attenuation model.
It is understood that other than the attenuation model of the three-primary color LED based on different production batch, it can also be to not
The attenuation model for corresponding to the LED display unit of different production batch is obtained by test with the LED display unit of production batch.
According to the use duration and attenuation model of mosaic display screen, the prediction brightness decay of three-primary color LED can be calculated
Value.Then, according to the prediction brightness decay value of three-primary color LED, regulation coefficient is calculated.Exemplary, when use, is 6 months a length of,
The prediction brightness decay value of RGB three-primary color LED is respectively 0.08,0.16, the prediction brightness retention value of 0.32, RGB three-primary color LED
(i.e. 1- predict brightness decay value) can serve as regulation coefficient: the regulation coefficient of corresponding RGB three primary colours is respectively 0.92,
0.84,0.78.It is understood that attenuation model, other than using duration-prediction brightness decay value data mode,
Can be using duration-prediction brightness retention value data mode, or record simultaneously using duration, prediction brightness decay value and
Predict brightness retention value.
Although all LED display units can be allowed to be corrected using identical brightness target value in quality inspection links, thus
Original intensity when coming into operation of all LED display units is allowed to be consistent.But mosaic display screen assembly complete after,
It will do it pointwise correction, wherein just including brightness correction coefficients, the brightness of mosaic display screen can be adjusted at this time, it may be with quality inspection
The original intensity of link is deviateed.In order to allow regulation coefficient more closing to reality situation, when calculating regulation coefficient, also into one
Step considers the brightness correction coefficients of mosaic display screen.It is exemplary, it can be fitted according to the brightness correction coefficients of mosaic display screen
One deviation factor, then deviation factor is denoted as 1.1, then allows front to walk for example, the brightness than quality inspection links improves 10%
Suddenly final regulation coefficient can be obtained multiplied by deviation factor in the regulation coefficient obtained.
When mosaic display screen, which includes, has the LED display unit of differential declines model, LED display to be corrected can be allowed single
Member is divided into the region of corresponding number according to the LED display unit quantity of surrounding, and independent regulation coefficient is arranged in each region.
The corresponding regulation coefficient in each region, it is corresponding according to the region, around LED display unit use duration and attenuation model
It is calculated.
The bearing calibration of mosaic display screen provided in this embodiment, replacement mosaic display screen in LED display unit it
Afterwards, using the use duration and attenuation model of mosaic display screen, regulation coefficient is calculated, then with adjustment factor to replacement
The original calibration coefficient of LED display unit be adjusted, work correction coefficient, does not need to maintenance needed for can obtaining work
Entire mosaic display screen afterwards carries out pointwise correction, and the correction of single led display unit rank may be implemented, and is guaranteeing to show matter
While measuring consistency, the quick correction of mosaic display screen after replacement LED display unit may be implemented, improve maintenance efficiency.
It should be noted that for simple description, therefore, it is stated as a series of action groups for embodiment of the method
It closes, but those skilled in the art should understand that, embodiment of that present invention are not limited by the describe sequence of actions, because according to
According to the embodiment of the present invention, some steps may be performed in other sequences or simultaneously.Secondly, those skilled in the art also should
Know, the embodiments described in the specification are all preferred embodiments, and the related movement not necessarily present invention is implemented
Necessary to example.
As shown in fig. 6, one embodiment of the invention additionally provides a kind of correction system of mosaic display screen, it to be used for tiled display
Correction after screen replacement LED display unit, comprising:
Coefficient obtains module 30, for obtaining the original calibration coefficient and adjustment factor of LED display unit to be corrected；
Correction coefficient adjusts module 50, for the original calibration coefficient and adjustment factor according to LED display unit to be corrected,
The work correction coefficient of LED display unit to be corrected is calculated.
It, can about the calculating of the original calibration coefficient of LED display unit to be corrected, adjustment factor and the correction coefficient that works
With referring to the description of preceding embodiment, details are not described herein.Correction system may be provided at the control unit of LED display unit
It on 130, also can be set in background control system, may be arranged as independent system.
The correction system of mosaic display screen provided in this embodiment, replacement mosaic display screen in LED display unit it
Afterwards, it is only necessary to be adjusted, be can be obtained needed for work using original calibration coefficient of the adjustment factor to the LED display unit of replacement
Work correction coefficient, do not need to after maintenance entire mosaic display screen carry out pointwise correction, single led display may be implemented
Mosaic display screen after replacement LED display unit may be implemented while guaranteeing to show quality conformance in the other correction of cell level
Quick correction, improve maintenance efficiency.
Correction system further includes adjustment factor computing module.
In some embodiments, adjustment factor computing module, specifically for showing the data of picture according to mosaic display screen,
Calculate adjustment factor.
Adjustment factor computing module, specifically includes:
Picture control unit shows white balance picture and tricolor frame for controlling mosaic display screen；
Image acquisition unit shows the picture image of white balance picture and tricolor frame for obtaining mosaic display screen,
Wherein, picture image includes at least the region of LED display unit to be corrected and its surrounding predetermined width；
Correcting area recognition unit, for identifying that LED display unit to be corrected is corresponding to be corrected from picture image
Region；
Regulation coefficient computing unit, for according to region to be corrected in picture image image information and non-area to be corrected
The image information in domain calculates regulation coefficient.
The specific working mode of adjustment factor computing module may refer to the description in preceding embodiment, no longer superfluous herein
It states.
In some embodiments, adjustment factor computing module, specifically for according to the use duration of mosaic display screen and declining
Subtract model, calculates adjustment factor.The concrete mode of adjustment factor is calculated using duration and attenuation model according to mosaic display screen,
It may refer to the description in preceding embodiment, details are not described herein.
The correction system of mosaic display screen provided in this embodiment, replacement mosaic display screen in LED display unit it
Afterwards, it is only necessary to be adjusted, be can be obtained needed for work using original calibration coefficient of the adjustment factor to the LED display unit of replacement
Work correction coefficient, do not need to after maintenance entire mosaic display screen carry out pointwise correction, single led display may be implemented
Mosaic display screen after replacement LED display unit may be implemented while guaranteeing to show quality conformance in the other correction of cell level
Quick correction, improve maintenance efficiency.
One embodiment of the invention also provides a kind of machine readable storage medium, is stored thereon with computer program, wherein institute
State the bearing calibration that computer program realizes mosaic display screen described in any of the above-described embodiment when executed by the processor.
If the integrated component/module/unit of the system/computer device is realized in the form of SFU software functional unit simultaneously
When sold or used as an independent product, it can store in a computer readable storage medium.Based on such reason
Solution, the present invention realize all or part of the process in above embodiment method, can also instruct phase by computer program
The hardware of pass is completed, and the computer program can be stored in a computer readable storage medium, the computer program
When being executed by processor, it can be achieved that the step of above-mentioned each method implementation.Wherein, the computer program includes calculating
Machine program code, the computer program code can for source code form, object identification code form, executable file or it is certain in
Between form etc..The computer readable storage medium may include: any entity that can carry the computer program code
Or device, recording medium, USB flash disk, mobile hard disk, magnetic disk, CD, computer storage, read-only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software
Distribution medium etc..It should be noted that the content that the computer readable storage medium includes can be according in jurisdiction
Legislation and the requirement of patent practice carry out increase and decrease appropriate, such as in certain jurisdictions, according to legislation and patent practice, meter
Calculation machine readable storage medium storing program for executing does not include electric carrier signal and telecommunication signal.
In several specific embodiments provided by the present invention, it should be understood that disclosed system and method, it can be with
It realizes by another way.For example, system embodiment described above is only schematical, for example, the component
Division, only a kind of logical function partition, there may be another division manner in actual implementation.
In addition, each functional module/component in each embodiment of the present invention can integrate in same treatment module/component
In, it is also possible to modules/component and physically exists alone, can also be integrated in two or more module/components identical
In module/component.Above-mentioned integrated module/component both can take the form of hardware realization, can also add software using hardware
Functional module/component form is realized.
It is obvious to a person skilled in the art that the embodiment of the present invention is not limited to the details of above-mentioned exemplary embodiment,
And without departing substantially from the spirit or essential attributes of the embodiment of the present invention, this hair can be realized in other specific forms
Bright embodiment.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this
The range of inventive embodiments is indicated by the appended claims rather than the foregoing description, it is intended that being equal for claim will be fallen in
All changes in the meaning and scope of important document are included in the embodiment of the present invention.It should not be by any attached drawing mark in claim
Note is construed as limiting the claims involved.Furthermore, it is to be understood that one word of " comprising " does not exclude other units or steps, odd number is not excluded for
Plural number.Multiple units, module or the device stated in system, device or terminal claim can also be by the same units, mould
Block or device are implemented through software or hardware.The first, the second equal words are used to indicate names, and are not offered as any specific
Sequence.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. the correction after LED display unit, feature are replaced in a kind of bearing calibration of mosaic display screen for mosaic display screen
It is, comprising:
Obtain the original calibration coefficient and adjustment factor of LED display unit to be corrected；
According to the original calibration coefficient and adjustment factor of the LED display unit to be corrected, it is single that LED display to be corrected is calculated
The work correction coefficient of member.
2. the bearing calibration of mosaic display screen according to claim 1, which is characterized in that the acquisition LED to be corrected is aobvious
Before the step of showing the original calibration coefficient and adjustment factor of unit, further includes:
The data of picture are shown according to mosaic display screen, calculate adjustment factor；
The data that picture is shown according to mosaic display screen calculate adjustment factor step and specifically include:
It controls mosaic display screen and shows white balance picture and tricolor frame；
Obtain the picture image that mosaic display screen shows white balance picture and tricolor frame, wherein picture image includes at least
The region of LED display unit to be corrected and its surrounding predetermined width；
The corresponding region to be corrected of LED display unit to be corrected is identified from picture image；
According to the image information in region to be corrected in picture image and the image information in non-region to be corrected, adjustment system is calculated
Number.
3. the bearing calibration of mosaic display screen according to claim 2, which is characterized in that described to be identified from picture image
The step of LED display unit to be corrected corresponding region to be corrected out, specifically,
Based on Luminance Analysis, the corresponding region to be corrected of LED display unit to be corrected is identified from picture image.
4. the bearing calibration of mosaic display screen according to claim 1, which is characterized in that the acquisition LED to be corrected is aobvious
Before the step of showing the original calibration coefficient and adjustment factor of unit, further includes:
According to the use duration and attenuation model of mosaic display screen, adjustment factor is calculated.
5. the bearing calibration of mosaic display screen according to any one of claims 1 to 4, which is characterized in that the original school
Positive coefficient includes original brightness correction coefficient and original colorimetric correction coefficient, and the adjustment factor includes brightness regulation coefficient and color
Spend adjustment factor.
6. the bearing calibration of mosaic display screen according to any one of claims 1 to 4, which is characterized in that described to be corrected
LED display unit is divided into several display areas, and each display area corresponds to independent regulation coefficient.
7. a kind of correction system replaces the correction after LED display unit for mosaic display screen characterized by comprising
Coefficient obtains module, for obtaining the original calibration coefficient and adjustment factor of LED display unit to be corrected；
Correction coefficient adjustment module is calculated for the original calibration coefficient and adjustment factor according to LED display unit to be corrected
To the work correction coefficient of LED display unit to be corrected.
8. correction system according to claim 7, which is characterized in that the correction system further includes that adjustment factor calculates mould
Block calculates adjustment factor for showing the data of picture according to mosaic display screen；
The adjustment factor computing module, specifically includes:
Picture control unit shows white balance picture and tricolor frame for controlling mosaic display screen；
Image acquisition unit shows the picture image of white balance picture and tricolor frame for obtaining mosaic display screen, wherein
Picture image includes at least the region of LED display unit to be corrected and its surrounding predetermined width；
Correcting area recognition unit, for identifying the corresponding region to be corrected of LED display unit to be corrected from picture image；
Regulation coefficient computing unit, for according to the image information in region to be corrected in picture image and non-region to be corrected
Image information calculates regulation coefficient.
9. correction system according to claim 7, which is characterized in that the correction system further includes that adjustment factor calculates mould
Block calculates adjustment factor for the use duration and attenuation model according to mosaic display screen.
10. a kind of machine readable storage medium, is stored thereon with computer program, wherein the computer program is by processor
The bearing calibration of mosaic display screen described in any one of claims 1-6 is realized when execution.
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