CN104167176A - LED box color debug method and device based on camera shooting - Google Patents
LED box color debug method and device based on camera shooting Download PDFInfo
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Abstract
The invention discloses an LED box color debug method and device based on camera shooting. The LED box color debug method comprises the steps of factory correction, wherein an LED box is lightened, after the work temperature of an LED screen is stable and when the LED box respectively displays an R image, a G image and a B image, the images are sequentially shot, the shooting data are sent to a data processor, the original RGB values of the three collected colors are analyzed, the RGB value of each color of LED points is obtained, and the minimum RGB value in each color serves as the RGB target value of the color; the RGB target value of each color is divided by the RGB value of the corresponding color of each LED point, a compensation factor is obtained, and the compensation factor is sent to an LED receiving card for factory correction; on-site correction, wherein the shot original data in the factory correction process are called, visual angle compensation is carried out on the original RGB values of the three colors, the target values are counted again, and a new compensation factor is calculated and sent to the LED receiving card for on-site correction.
Description
Technical field
The present invention relates to LED field, more specifically, relate to a kind of LED casing color adjustment method and device of taking based on camera.
Background technology
LED dot matrix display screen because its brightness is high, work power consumption is little, the life-span long, steady performance, in widespread attention, and has obtained developing rapidly, is widely used in outside stadiums, bank, ZhengSecurities Deng different chamber, the advertising in indoor place.
LED display can be carried out factory's correction to LED casing before dispatching from the factory, can guarantee that like this in casing, LED color consistance is even, for larger LED, spell wall, can not guarantee the colour consistency between casing and casing, this just need to carry out the correction again between casing to factory's calibration result at the scene, although than directly carrying out straightened up in place has reduced certain workload, some is loaded down with trivial details for operation steps.
Summary of the invention
The present invention is at least one defect (deficiency) overcoming described in above-mentioned prior art, first a kind of high efficiency LED casing color adjustment method of taking based on camera is proposed, plant data is combined with site environment, effectively utilized plant data resource, shortened the LED casing straightened up in place time, promoted straightened up in place personnel's work efficiency.
Another object of the present invention is to propose a kind of LED casing color debugging apparatus of taking based on camera.
The present invention is intended to solve the problems of the technologies described above at least to a certain extent.
For solving the problems of the technologies described above, technical scheme of the present invention is as follows:
A LED casing color adjustment method of taking based on camera, comprising:
Factory proofreaies and correct: LED casing is carried out to factory's Concordance, light LED casing, treat LED screen body running temperature stabilization, when making LED casing show respectively R, G, B picture, adopt camera to take successively, and the data that photograph are sent to data processor, data processor carries out mathematical statistics analysis to the original rgb value of collect three kinds of colors, obtain the rgb value of every kind of color of each LED point, and the RGB desired value using the RGB minimum value in every kind of color as this color;
The rgb value of the respective color that the RGB desired value of every kind of color and each LED are ordered is divided by, and obtains the penalty coefficient of every kind of color of each LED point, above-mentioned penalty coefficient is handed down to LED receiving card and completes and carry out factory's correction;
Straightened up in place: call factory's timing and take raw data, and the original rgb value of R, G, tri-kinds of colors of B is carried out to viewing angle compensation, then again add up desired value, and calculate new penalty coefficient, new penalty coefficient is handed down to LED receiving card and completes and carry out straightened up in place.
Factory's timing, lights the collection that LED casing can start to carry out data after about 20 minutes, now shields body running temperature stabilization, can effect correction effect.
Owing to having carried out the raw data acquisition of different casings at factory's timing, so timing does not need again to take screen body at the scene, only need to call factory and take raw data, and raw data is carried out to viewing angle compensation, then again add up desired value, and calculate new penalty coefficient.
A LED casing color debugging apparatus of taking based on camera, comprising:
Factory's correction module: for LED casing is carried out to factory's Concordance, light LED casing, treat LED screen body running temperature stabilization, when making LED casing show respectively R, G, B picture, adopt camera to take successively, and the data that photograph are sent to data processor, data processor carries out mathematical statistics analysis to the original rgb value of collect three kinds of colors, obtain the rgb value of every kind of color of each LED point, and the RGB desired value using the RGB minimum value in every kind of color as this color;
The rgb value of the respective color that the RGB desired value of every kind of color and each LED are ordered is divided by, and obtains the penalty coefficient of every kind of color of each LED point, above-mentioned penalty coefficient is handed down to LED receiving card and completes and carry out factory's correction;
Straightened up in place module: call factory's timing and take raw data, and the original rgb value of R, G, tri-kinds of colors of B is carried out to viewing angle compensation, then again add up desired value, and calculate new penalty coefficient, new penalty coefficient is handed down to LED receiving card and completes and carry out straightened up in place.
Compared with prior art, the present invention has effectively utilized the LED factory colour consistency correction data based on camera, in conjunction with curstomer's site, spell wall actual size, the LED pointwise data that factory is gathered are carried out visual angle correction, save the on-the-spot Resurvey screen body raw data time, improved greatly engineering staff's work efficiency.
Accompanying drawing explanation
Tu1Wei factory correcting colour color management method flow diagram.
Fig. 2 is that the on-the-spot field angle of raw data is proofreaied and correct schematic diagram.
Embodiment
Below in conjunction with drawings and Examples, technical scheme of the present invention is described further.
Embodiment 1
A LED casing color adjustment method of taking based on camera, comprising:
1, for each casing of LED, in factory, complete the LED factory correction that colour consistency is proofreaied and correct; Its main implementation procedure is:
(1) light LED casing about 20 minutes, make to shield body running temperature stabilization, be unlikely to effect correction effect;
(2) when casing shows respectively R, G, B picture, camera is taken successively, and the data that photograph are passed to and control PC;
(3) control PC the original rgb value of collect three kinds of colors is carried out to mathematical statistics analysis, find in casing all attainable target rgb values of all LED points, minimum rgb value in the data that collect.Now will note the rejecting of bad point, in the present embodiment, the mode of rejecting bad point is: the mean value of the original RGB collecting in statistics casing, and the LED point that rgb value is less than to average 30% is set as bad point, not in the selected scope of desired value;
(4) penalty coefficient calculates: the rgb value of the respective color of the RGB desired value of every kind of color and each LED is divided by, can obtains the penalty coefficient of every kind of color of each LED point; Note, the penalty coefficient of bad point can indirect assignment be 1.
(5) above-mentioned penalty coefficient is handed down to LED receiving card.
Like this, just completed the casing LED of factory Concordance.
2, data storage: the penalty coefficient that R, G, the original rgb value of tri-kinds of colors of B, correction target value, each LED that camera is taken ordered.These three kinds of data, can, according to the design specification of LED manufacturer separately, be stored in self-defining space separately.Such as in receiving card FLASH etc.
3, LED straightened up in place
LED factory timing carries out for LED casing, and each casing is all in the normal direction of taking camera, at actual curstomer's site, be not all normal directions in observer's direction of observation of all casings, due to visual angle and each casing different target value difference opposite sex of factory's timing, cause between the LED casing after factory proofreaies and correct and also can have color inconsistency; So just need to again proofread and correct the corrected casing of factory.
Owing to having carried out the raw data acquisition of different casings in factory, so do not need at the scene again to take screen body, only need to call factory and take raw data, and raw data is carried out to viewing angle compensation, then again add up desired value, and calculate new penalty coefficient.Concrete operation step is as follows:
(1) light curstomer's site LED and spell wall, observer stands in LED and spells wall centre normal position, and whether observation spelling wall color is consistent.If consistent, be left intact, if i.e. LED spelling wall is smaller, the LED casing colour consistency after factory proofreaies and correct is better, does not now need to recalculate on-the-spot color compensating coefficient.If inconsistent, do following processing:
(2) call R, the G of each casing, the original rgb value of tri-kinds of colors of B, and sequentially reformulate according to the discharge of casing the rgb value that LED spells three kinds of colors of wall;
To above-mentioned call original rgb value carry out angle modification, specifically, referring to accompanying drawing 2, computing formula is as follows:
If L is the distance between LED screen body normal direction and observer, with reference to the distance between casing and observer, r is the length of side of LED casing, and the ranks number of casing is (m, n).:
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.
The capable j row of an i casing with the distance with reference to casing center is:
The R of take in R look describes as example, and the original value disposal route of other colors is identical, tired, does not state.
If the R pixel original value in the red LED point red R arbitrarily of the capable j row of an i casing is Y, the pixel value after proofreading and correct is:
Y '=sin θ Y, wherein
The disposal route of other colored pixels original values is identical.
(4) three kinds of colors of revised whole screen are recalculated to desired value and penalty coefficient according to LED factory correction module method.
(5) the above-mentioned penalty coefficient recalculating is handed down to LED receiving card.
The corresponding same or analogous parts of same or analogous label;
In accompanying drawing, describe position relationship for only for exemplary illustration, can not be interpreted as the restriction to this patent;
Obviously, the above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all embodiments.All any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in the protection domain of the claims in the present invention.
Claims (6)
1. a LED casing color adjustment method of taking based on camera, is characterized in that, comprising:
Factory proofreaies and correct: LED casing is carried out to factory's Concordance, light LED casing, treat LED screen body running temperature stabilization, when making LED casing show respectively R, G, B picture, adopt camera to take successively, and the data that photograph are sent to data processor, data processor carries out mathematical statistics analysis to the original rgb value of collect three kinds of colors, obtain the rgb value of every kind of color of each LED point, and the RGB desired value using the RGB minimum value in every kind of color as this color;
The rgb value of the respective color that the RGB desired value of every kind of color and each LED are ordered is divided by, and obtains the penalty coefficient of every kind of color of each LED point, above-mentioned penalty coefficient is handed down to LED receiving card and completes and carry out factory's correction;
Straightened up in place: call factory's timing and take raw data, and the original rgb value of R, G, tri-kinds of colors of B is carried out to viewing angle compensation, then again add up desired value, and calculate new penalty coefficient, new penalty coefficient is handed down to LED receiving card and completes and carry out straightened up in place.
2. LED casing color adjustment method of taking based on camera according to claim 1, is characterized in that, first puts bright field LED and spell wall before straightened up in place, observer stands in LED and spells wall centre normal position, whether unanimously observe spelling wall color, if consistent, finish; If inconsistent, LED spelled to wall and carry out straightened up in place.
3. LED casing color adjustment method of taking based on camera according to claim 2, it is characterized in that, call R, the G of each LED casing of factory's timing, the original rgb value of tri-kinds of colors of B, and sequentially reformulate according to the discharge of casing the rgb value that LED spells three kinds of colors of wall; The detailed process of the original rgb value of R, G, tri-kinds of colors of B being carried out to viewing angle compensation is:
If L is the distance between LED screen body normal direction and observer, with reference to the distance between casing and observer, r is the length of side of LED casing, and the ranks number of LED casing is (m, n); :
Line number a=int (m/2+0.5) with reference to casing;
Columns b=int (n/2+0.5) with reference to casing;
The capable j row of an i casing with the distance with reference to casing center is:
If the pixel original value that the capable j row of an i any LED of casing is ordered is Y, the pixel value after proofreading and correct is:
Y '=sin θ Y, wherein
4. according to the LED casing color adjustment method of taking based on camera described in claims 1 to 3 any one, it is characterized in that, while obtaining the rgb value of every kind of color of each LED point, also comprise rejecting LED bad point, wherein the penalty coefficient of LED bad point is made as 1.
5. LED casing color adjustment method of taking based on camera according to claim 4, is characterized in that, described LED bad point refers to that rgb value that this LED is ordered is less than the mean value of 30% original RGB.
6. a LED casing color debugging apparatus of taking based on camera, is characterized in that, comprising:
Factory's correction module: for LED casing is carried out to factory's Concordance, light LED casing, treat LED screen body running temperature stabilization, when making LED casing show respectively R, G, B picture, adopt camera to take successively, and the data that photograph are sent to data processor, data processor carries out mathematical statistics analysis to the original rgb value of collect three kinds of colors, obtain the rgb value of every kind of color of each LED point, and the RGB desired value using the RGB minimum value in every kind of color as this color;
The rgb value of the respective color that the RGB desired value of every kind of color and each LED are ordered is divided by, and obtains the penalty coefficient of every kind of color of each LED point, above-mentioned penalty coefficient is handed down to LED receiving card and completes and carry out factory's correction;
Straightened up in place module: call factory's timing and take raw data, and the original rgb value of R, G, tri-kinds of colors of B is carried out to viewing angle compensation, then again add up desired value, and calculate new penalty coefficient, new penalty coefficient is handed down to LED receiving card and completes and carry out straightened up in place.
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| CN110461068A (en) * | 2019-08-28 | 2019-11-15 | 江门市征极光兆科技有限公司 | A kind of LED light tape controller output connection control method, light bar controller, system and storage medium |
| CN111179817A (en) * | 2020-02-21 | 2020-05-19 | 卡莱特（深圳）云科技有限公司 | Method and device for eliminating brightness difference of display screen |
| CN111429851A (en) * | 2020-04-15 | 2020-07-17 | 北京京东方专用显示科技有限公司 | Display device control method and display device |
| CN111724693A (en) * | 2020-07-13 | 2020-09-29 | 杭州海康威视数字技术股份有限公司 | Splicing display method, device, equipment, system and terminal equipment and display unit |
| US11200818B2 (en) * | 2018-09-30 | 2021-12-14 | Hefei Xinsheng Optoelectronics Technology Co., Ltd. | Method and device for processing abnormal data |
| CN115022609A (en) * | 2021-03-03 | 2022-09-06 | 深圳市奥拓电子股份有限公司 | Color gamut matching method, system and storage medium for movie and television shooting |
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