CN104167176B - A kind of LED box color adjustment method based on camera shooting and device - Google Patents
A kind of LED box color adjustment method based on camera shooting and device Download PDFInfo
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- CN104167176B CN104167176B CN201410398473.1A CN201410398473A CN104167176B CN 104167176 B CN104167176 B CN 104167176B CN 201410398473 A CN201410398473 A CN 201410398473A CN 104167176 B CN104167176 B CN 104167176B
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Abstract
The present invention discloses a kind of LED box color adjustment method based on camera shooting and device, method includes that factory corrects: light LED box, treat that LED screen body operating temperature is stable, LED box is made to shoot successively when showing R, G, B picture respectively, the data of shooting are sent to data processor, the original rgb value of the three kinds of colors collected is analyzed, obtains the rgb value of LED point each color, using the RGB minima in each color as the RGB desired value of color;The rgb value of the RGB desired value of each color with the respective color of each LED point is divided by, is compensated coefficient, penalty coefficient is issued LED reception card and carries out factory's correction;Straightened up in place: call factory's timing shooting initial data, the original rgb value of three kinds of colors is carried out viewing angle compensation, again adds up desired value, and calculate new penalty coefficient, new penalty coefficient is handed down to LED reception card and carries out straightened up in place.
Description
Technical field
The present invention relates to LED field, more particularly, to a kind of LED box color based on camera shooting
Adjustment method and device.
Background technology
LED dot matrix display screen, because its brightness is high, operating power consumption is little, life-span length, steady performance, is subject to
To extensively paying attention to, and developed rapidly, be widely used in outside stadiums, bank, Zheng Deng different chamber,
The advertising in indoor place.
LED display can carry out factory's correction to LED box, in so can ensure that casing before dispatching from the factory
LED color concordance is uniform, spells wall for bigger LED, it is impossible to ensure the face between casing and casing
Color concordance, this is accomplished by the correction again carrying out between casing to factory's calibration result at the scene, although than straight
Tap into row straightened up in place and decrease certain workload, operating procedure or some is loaded down with trivial details.
Summary of the invention
The present invention is to overcome at least one defect (not enough) described in above-mentioned prior art, first proposes a kind of high
The LED box color adjustment method based on camera shooting of efficiency, combines plant data with site environment,
Effectively make use of plant data resource, shorten the LED box straightened up in place time, improve straightened up in place
The work efficiency of personnel.
A further object of the present invention is to propose a kind of LED box color debugging apparatus based on camera shooting.
It is contemplated that solve above-mentioned technical problem the most to a certain extent.
For solving above-mentioned technical problem, technical scheme is as follows:
A kind of LED box color adjustment method based on camera shooting, including:
Factory corrects: LED box is carried out factory's Concordance, lights LED box, treat LED screen
Body running temperature stabilization, while making LED box show R, G, B picture respectively, uses camera to clap successively
Take the photograph, and the data that photograph are sent to data processor, the data processor three kinds of colors to collecting former
Beginning rgb value carries out mathematical statistics analysis, obtains the rgb value of each LED point each color, and by every kind of face
RGB minima in color is as the RGB desired value of this color;
The rgb value of the RGB desired value of each color with the respective color of each LED point is divided by, obtains each
The penalty coefficient of LED point each color, is handed down to above-mentioned penalty coefficient LED reception card and completes to carry out factory
Correction;
Straightened up in place: call factory timing shooting initial data, and original to tri-kinds of colors of R, G, B
Rgb value carries out viewing angle compensation, the most again adds up desired value, and calculates new penalty coefficient, by new benefit
Repay coefficient to be handed down to LED reception card and complete to carry out straightened up in place.
Factory's timing, lights LED box and can proceed by the collection of data after about 20 minutes, now
Screen body running temperature stabilization, does not interferes with calibration result.
Owing to having been carried out the raw data acquisition of different casing at factory's timing, so school at the scene
Timing then need not re-shoot screen body, it is only necessary to calls factory's shooting initial data, and carries out initial data
Viewing angle compensation, the most again adds up desired value, and calculates new penalty coefficient.
A kind of LED box color debugging apparatus based on camera shooting, including:
Factory's correction module: for LED box is carried out factory's Concordance, light LED box, treat
LED screen body operating temperature is stable, while making LED box show R, G, B picture respectively, uses phase
Machine shoots successively, and sends the data that photograph to data processor, to collecting three kinds of data processor
The original rgb value of color carries out mathematical statistics analysis, obtains the rgb value of each LED point each color, and
Using the RGB minima in each color as the RGB desired value of this color;
The rgb value of the RGB desired value of each color with the respective color of each LED point is divided by, obtains each
The penalty coefficient of LED point each color, is handed down to above-mentioned penalty coefficient LED reception card and completes to carry out factory
Correction;
Straightened up in place module: call factory's timing shooting initial data, and to tri-kinds of colors of R, G, B
Original rgb value carries out viewing angle compensation, the most again adds up desired value, and calculates new penalty coefficient, will be new
Penalty coefficient be handed down to LED reception card and complete to carry out straightened up in place.
Compared with prior art, the present invention is effectively utilized LED factory based on camera colour consistency correction
Data, spell wall actual size in conjunction with curstomer's site, and the LED pointwise data gathering factory carry out perspective correction,
Eliminate the on-the-spot Resurvey screen body initial data time, be greatly improved the work efficiency of engineering staff.
Accompanying drawing explanation
Fig. 1 is that factory corrects color management method flow chart.
Fig. 2 is initial data scene angle of visual field correction schematic diagram.
Detailed description of the invention
With embodiment, technical scheme is described further below in conjunction with the accompanying drawings.
Embodiment 1
A kind of LED box color adjustment method based on camera shooting, including:
1, in factory, the LED factory correction of colour consistency correction is completed for each casing of LED;Its
The process that mainly realizes is:
(1) light LED box about 20 minutes, make screen body running temperature stabilization, be unlikely to impact correction effect
Really;
(2) while casing shows R, G, B picture respectively, camera shoots successively, and the data that will photograph
Pass to control PC;
(3) the original rgb value controlling the PC three kinds of colors to collecting carries out mathematical statistics analysis, finds case
All LED points the most attainable target rgb value in body, rgb value minimum in the data i.e. collected.
Now it is noted that the rejecting of bad point, in the present embodiment, the mode rejecting bad point is: collect in statistics casing
The meansigma methods of original RGB, rgb value is set as bad point, not at mesh less than the LED point of average 30%
In the range of scale value is selected;
(4) penalty coefficient calculates: by the respective color of the RGB desired value of each color and each LED
Rgb value is divided by, and i.e. can get the penalty coefficient of each LED point each color;Note, the compensation system of bad point
Number can indirect assignment be 1.
(5) above-mentioned penalty coefficient is handed down to LED reception card.
So, factory's casing LED Concordance is just completed.
2, data storage: camera shooting the original rgb value of tri-kinds of colors of R, G, B, correction target value,
The penalty coefficient of each LED point.These three data, can deposit according to the design specification of respective LED manufacturer
Storage is in respective self-defining space.In such as receiving card FLASH etc..
3, LED straightened up in place
LED factory timing is carried out for LED box, and each casing is all in the normal side of shooting camera
To, at actual curstomer's site, and not all casing is all in the normal direction of observer's direction of observation, owing to regarding
Angle and factory's timing each casing different target value difference the opposite sex, cause factory correction after LED box it
Between also can there is color discordance;Casing corrected to factory is thus needed to re-calibrate.
Owing to having carried out the raw data acquisition of different casing in factory, so need not at the scene again clap
Take the photograph screen body, it is only necessary to call factory's shooting initial data, and initial data is carried out viewing angle compensation, the most again
Statistics desired value, and calculate new penalty coefficient.Concrete operation step is as follows:
(1) lighting curstomer's site LED and spell wall, observer stands in LED and spells wall centre normal position, observes and spells
Wall color is the most consistent.If consistent, then it is left intact, if i.e. LED spelling wall is smaller, through work
Factory-run school just after LED box colour consistency preferable, the most then need not recalculate on-the-spot color compensating system
Number.If it is inconsistent, do following process:
(2) call the original rgb value of tri-kinds of colors of R, G, B of each casing, and according to the discharge of casing
Order is reformulated LED and is spelled the rgb value of three kinds of colors of wall;
To above-mentioned call original rgb value carry out angle modification, referring specifically to accompanying drawing 2, computing formula
As follows:
If L is the distance between LED screen body normal direction and observer, i.e. with reference between casing and observer
Distance, r is the length of side of LED box, the ranks number of casing be (m, n).Then:
Line number a=int (m/2+0.5) with reference to casing;
Columns b=int (n/2+0.5) with reference to casing.
That is, the ranks number with reference to casing is that whole screen casing ranks number rounds after 2.
I-th row jth row casing with the distance with reference to casing center is:
Illustrating as a example by R in R color, the original value processing method of other colors is identical, does not states tired.
If the R pixel original value in the i-th red arbitrarily LED point red R of row jth row casing is Y, then
Pixel value after correction is:
Y '=sin θ Y, wherein
The processing method of other colored pixels original values is identical.
(4) revised three kinds of colors of whole screen are recalculated desired value according to LED factory correction module method
And penalty coefficient.
(5) the above-mentioned penalty coefficient recalculated is handed down to LED reception card.
The corresponding same or analogous parts of same or analogous label;
Described in accompanying drawing, position relationship is used for the explanation of being merely cited for property, it is impossible to be interpreted as the limit to this patent
System;
Obviously, the above embodiment of the present invention is only for clearly demonstrating example of the present invention, and not
It it is the restriction to embodiments of the present invention.For those of ordinary skill in the field, in described above
On the basis of can also make other changes in different forms.Here without also cannot be to all of enforcement
Mode gives exhaustive.All any amendment, equivalent and improvement made within the spirit and principles in the present invention
Deng, within should be included in the protection domain of the claims in the present invention.
Claims (4)
1. a LED box color adjustment method based on camera shooting, it is characterised in that including:
Factory corrects: LED box is carried out factory's Concordance, lights LED box, treat LED screen
Body running temperature stabilization, while making LED box show R, G, B picture respectively, uses camera to clap successively
Take the photograph, and the data that photograph are sent to data processor, the data processor three kinds of colors to collecting former
Beginning rgb value carries out mathematical statistics analysis, obtains the rgb value of each LED point each color, and by every kind of face
RGB minima in color is as the RGB desired value of this color;
The rgb value of the RGB desired value of each color with the respective color of each LED point is divided by, obtains each
The penalty coefficient of LED point each color, is handed down to above-mentioned penalty coefficient LED reception card and completes to carry out factory
Correction;
Straightened up in place: call factory timing shooting initial data, and original to tri-kinds of colors of R, G, B
Rgb value carries out viewing angle compensation, the most again adds up desired value, and calculates new penalty coefficient, by new benefit
Repay coefficient to be handed down to LED reception card and complete to carry out straightened up in place;
First putting bright field LED before straightened up in place and spell wall, observer stands in LED and spells wall centre normal position, sees
Examine spelling wall color the most consistent, if unanimously, then terminate;Carry out existing if it is inconsistent, LED to be spelled wall
Field correction;
Call the original rgb value of tri-kinds of colors of R, G, B of each LED box of factory's timing, and according to
The discharge order of casing is reformulated LED and is spelled the rgb value of three kinds of colors of wall;To tri-kinds of colors of R, G, B
Original rgb value carry out the detailed process of viewing angle compensation and be:
If L is the distance between LED screen body normal direction and observer, i.e. with reference between casing and observer
Distance, r is the length of side of LED box, the ranks number of LED box be (m, n);Then:
Line number a=int (m/2+0.5) with reference to casing;
Columns b=int (n/2+0.5) with reference to casing;
I-th row jth row casing with the distance with reference to casing center is:
If the pixel original value of i-th row jth row casing any LED point is Y, then the pixel value after correction is:
Y '=sin θ Y, wherein
LED box color adjustment method based on camera shooting the most according to claim 1, its feature
Being, also including when obtaining the rgb value of each LED point each color rejecting LED bad point, wherein LED is bad
The penalty coefficient of point is set to 1.
LED box color adjustment method based on camera shooting the most according to claim 2, its feature
Being, described LED bad point refers to the meansigma methods of the rgb value of this LED point original RGB less than 30%.
4. a LED box color debugging apparatus based on camera shooting, it is characterised in that including:
Factory's correction module: for LED box is carried out factory's Concordance, light LED box, treat
LED screen body operating temperature is stable, while making LED box show R, G, B picture respectively, uses phase
Machine shoots successively, and sends the data that photograph to data processor, to collecting three kinds of data processor
The original rgb value of color carries out mathematical statistics analysis, obtains the rgb value of each LED point each color, and
Using the RGB minima in each color as the RGB desired value of this color;
The rgb value of the RGB desired value of each color with the respective color of each LED point is divided by, obtains each
The penalty coefficient of LED point each color, is handed down to above-mentioned penalty coefficient LED reception card and completes to carry out factory
Correction;
Straightened up in place module: call factory's timing shooting initial data, and to tri-kinds of colors of R, G, B
Original rgb value carries out viewing angle compensation, the most again adds up desired value, and calculates new penalty coefficient, will be new
Penalty coefficient be handed down to LED reception card and complete to carry out straightened up in place;
First putting bright field LED before straightened up in place and spell wall, observer stands in LED and spells wall centre normal position, sees
Examine spelling wall color the most consistent, if unanimously, then terminate;Carry out existing if it is inconsistent, LED to be spelled wall
Field correction;
Call the original rgb value of tri-kinds of colors of R, G, B of each LED box of factory's timing, and according to
The discharge order of casing is reformulated LED and is spelled the rgb value of three kinds of colors of wall;To tri-kinds of colors of R, G, B
Original rgb value carry out the detailed process of viewing angle compensation and be:
If L is the distance between LED screen body normal direction and observer, i.e. with reference between casing and observer
Distance, r is the length of side of LED box, the ranks number of LED box be (m, n);Then:
Line number a=int (m/2+0.5) with reference to casing;
Columns b=int (n/2+0.5) with reference to casing;
I-th row jth row casing with the distance with reference to casing center is:
If the pixel original value of i-th row jth row casing any LED point is Y, then the pixel value after correction is:
Y '=sin θ Y, wherein
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CN109545113B (en) * | 2018-09-30 | 2022-09-06 | 合肥鑫晟光电科技有限公司 | Abnormal data processing method and device |
CN109448653B (en) * | 2018-12-21 | 2021-02-09 | 惠科股份有限公司 | Display device compensation calculation method, compensation structure and display device |
CN110461068B (en) * | 2019-08-28 | 2021-07-27 | 江门市征极光兆科技有限公司 | LED lamp strip controller output wiring control method, lamp strip controller, system and storage medium |
CN111179817B (en) * | 2020-02-21 | 2020-12-29 | 卡莱特(深圳)云科技有限公司 | Method and device for eliminating brightness difference of display screen |
CN111429851B (en) * | 2020-04-15 | 2021-11-16 | 北京睿智航显示科技有限公司 | Display device control method and display device |
CN111724693B (en) * | 2020-07-13 | 2022-04-05 | 杭州海康威视数字技术股份有限公司 | Splicing display method, device, equipment and system, terminal equipment and display unit |
CN115022609B (en) * | 2021-03-03 | 2024-03-22 | 深圳市创想数维科技有限公司 | Color gamut matching method, system and storage medium for film and television shooting |
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US7911485B2 (en) * | 2003-06-04 | 2011-03-22 | Radiam Imaging, Inc. | Method and apparatus for visual display calibration system |
CN100594534C (en) * | 2007-08-22 | 2010-03-17 | 深圳市同洲电子股份有限公司 | Lightness data obtaining method and device for gamma correction of LED |
CN101650914B (en) * | 2009-06-17 | 2016-01-20 | 北京巨数数字技术开发有限公司 | A kind of point-to-point correction system |
CN101996614B (en) * | 2009-08-25 | 2014-11-05 | 康佳集团股份有限公司 | Full-screen color correction method for LED display and implementation system thereof |
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Address after: Kezhu road high tech Industrial Development Zone, Guangzhou city of Guangdong Province, No. 233 510670 Patentee after: VTRON GROUP Co.,Ltd. Address before: Kezhu road high tech Industrial Development Zone, Guangzhou city of Guangdong Province, No. 233 510670 Patentee before: VTRON TECHNOLOGIES Ltd. |
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Granted publication date: 20160824 Termination date: 20210813 |