CN103927980A - Point-by-point correcting method and device for LED display screen - Google Patents
Point-by-point correcting method and device for LED display screen Download PDFInfo
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- CN103927980A CN103927980A CN201410085901.5A CN201410085901A CN103927980A CN 103927980 A CN103927980 A CN 103927980A CN 201410085901 A CN201410085901 A CN 201410085901A CN 103927980 A CN103927980 A CN 103927980A
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Abstract
The invention belongs to the technology of display screen correcting, and provides a point-by-point correcting method for an LED display screen. The method comprises the following steps that firstly, for all display colors, LED lamps with the same sequential number in all LED lattice modules are turned on, display data are collected, LED lamps with the same next sequential number in the LED lattice modules are turned on after collection, display data are collected until the display data of all LED lamps in the LED lattice modules are collected, and all the LED lattice modules are obtained by averagely dividing an LED display screen according to the area; secondly, the obtained display data of all the LED lamps are combined with the correction target value according to the display data of all the LED lamps with different display colors to generate a correction coefficient of the LED display screen. According to the point-by-point correcting method for the LED display screen, the evenness of luminance and chroma after the LED display screen is corrected can be improved, and correcting efficiency can be greatly improved.
Description
Technical field
The present invention relates to LED display alignment technique, relate in particular to a kind of pointwise correction method and means for correcting of LED display.
Background technology
LED display uniformity of chromaticity problem is all puzzlement insider's a great problem all the time.The brightness irregularities that it has been generally acknowledged that LED can be improved brightness uniformity problem by single point correction, and colourity is inhomogeneous, cannot proofread and correct, can only be by LED chromaticity coordinates is segmented and screen to improve.But along with people are more and more higher to the requirement of LED display, only LED chromaticity coordinates is segmented and screened and cannot meet the fastidious sight of people.The method that adopts three primary colours complementation to repay to LED display is proofreaied and correct, and can make uniformity of chromaticity improve and can realize.
The bearing calibration of used routine, when proofreading and correct outdoor large-size screen monitors, gathers LED display subregion, and this just need to adjust camera lens frequently, is easy to cause the calibration result between region and region inconsistent, and inefficiency.Meanwhile, when proofreading and correct high density screen body (the especially screen body below P2), between LED and LED, can form and crosstalk, the data that cause correcting camera to collect are not accurate enough, thus effect correction effect.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of pointwise correction method and means for correcting of LED display, and being intended to solve LED display straightened up in place needs frequent camera lens and the not accurate enough problem of high density display screen image data adjusted.
The present invention is achieved in that a kind of pointwise correction method of LED display, comprises the following steps:
Step 1, for every kind, show look, the LED lamp that in each LED lattice module, sequence number is identical is lighted and shown data acquisition, after collection completes, again the LED lamp that in each LED lattice module, next sequence number is identical is lighted and shown data acquisition, until gathered the demonstration data of all LED lamps in each LED lattice module; Described each LED lattice module is divided and is obtained by zone leveling by LED display;
Step 2, according to step 1, obtain the demonstration data of all LED lamps under various demonstration looks, the demonstration data of all LED lamps that obtain are integrated in conjunction with correction target value, generate the correction coefficient of LED display.
Further, the quantity that in described step 1, LED display divides by zone leveling the LED lattice module obtaining is less than or equal to the each maximum collection number of camera.
Further, the LED lamp in described step 1 in each LED lattice module, by from left to right, from top to bottom, is lighted to blue mode from red to green again.
Further, in described step 2, correction target value comprises chromaticity correction desired value and the gamma correction desired value of three kinds of colors of red, green, blue, and the color triangle that described chromaticity correction desired value forms is included in to be proofreaied and correct in the front formed color triangle of red, green, blue coordinate figure.
Further, when in described step 2, the demonstration data of all LED lamps and correction target value are integrated, the all demonstration data that collect are arranged according to the arrangement mode of LED display reality, then synthesize by mode and correction target value from left to right, from top to bottom.
The present invention also provides a kind of means for correcting of LED display pointwise correction method, comprise camera, camera control module, correction module and display screen control system, described camera is fixed on the dead ahead of LED display, for gathering every kind of demonstration data that show look of LED lamp; Described camera control module is connected with described camera, for sending acquisition instructions to described camera and receiving the demonstration data that described collected by camera arrives;
Described correction module is connected with described display screen control system with described camera control module respectively, be used for setting correction target value, and the demonstration data of described correction target value and all LED lamps of receiving from described camera control module are integrated, the correction coefficient that generates LED display also sends to described display screen control system;
Described display screen control system is connected with described LED display, described LED display is divided into each LED lattice module by zone leveling, the LED lamp that in each LED lattice module, sequence number is identical is lighted, at described camera, show after data acquisition completes and again the LED lamp that in each LED lattice module, next sequence number is identical is lighted and shown data acquisition by described camera, order is lighted each LED lamp according to this, until gathered the demonstration data of all LED lamps in each LED lattice module, and after receiving correction coefficient, control described LED display and proofread and correct.
Further, described means for correcting also comprises Database Systems, and described Database Systems are connected with described correction module, for storing brightness and the chromaticity coordinate of each LED lamp of described LED display.
The quantity of several LED lattice modules that further, described display screen control system is divided into LED display by zone leveling is less than or equal to the each maximum collection number of described camera.
Further, the correction target value that described correction module is set comprises gamma correction desired value and the chromaticity correction desired value of three kinds of colors of red, green, blue, and the color triangle that described chromaticity correction desired value forms is included in to be proofreaied and correct in the front formed color triangle of red, green, blue coordinate figure.
Further, described display screen control system is according to from left to right, from top to bottom, from red to green, controls in LED display lighting of LED lamp in each LED lattice module again to blue mode; The acquisition order data that described camera is lighted according to described LED lamp.
The present invention compared with prior art, beneficial effect is: the pointwise correction method of described LED display adopts the mode image data of minute color and dot interlace image data, camera lens only need be aimed at whole screen, without repeatedly adjusting camera lens, efficiency and the effect of straightened up in place can be improved, the not good problem of point clearance display screen calibration result can be solved again.
Accompanying drawing explanation
Fig. 1 is the flow chart of steps of the pointwise correction method of LED display of the present invention;
Fig. 2 is the system chart of LED display pointwise correction device of the present invention;
Fig. 3 is the schematic diagram that LED display is divided into dot interlace image data after some LED lattice modules.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
As shown in Figure 1, for the present invention's one preferred embodiment, a kind of pointwise correction method of LED display, comprise the following steps: step 1: for every kind, show look, the LED lamp that in each LED lattice module, sequence number is identical is lighted and shown data acquisition, after collection completes, again the LED lamp that in each LED lattice module, next sequence number is identical is lighted and shown data acquisition, until gathered the demonstration data of all LED lamps in each LED lattice module; Described each LED lattice module is divided and is obtained by zone leveling by LED display; Step 2: obtain the demonstration data of all LED lamps under various demonstration looks according to step 1, the demonstration data of all LED lamps that obtain are integrated in conjunction with correction target value, generate the correction coefficient of LED display.
In described step 1, show that look comprises three kinds of colors of red, green and blue, the sequence number in described LED lattice module is for being numbered each LED lamp in order.When LED display is divided into several LED lattice modules by zone leveling, the lattice module of dividing is divided by the residing region of LED lamp, and the LED lamp in each LED lattice module is all in a continuous region.The form of described lattice module is the pattern of a*b, such as being divided into the LED lattice module of 4*4, the LED lattice module of 6*4 etc.The quantity that LED display divides by zone leveling the LED lattice module obtaining is less than or equal to the each maximum collection number of camera.Such as, the each maximum of camera can gather 300*200 LED lamp, the pixel of LED display is 1200*800, LED display is divided according to the module of 4*4, as shown in Figure 3, for LED display is divided into, each LED lattice module is carried out after some LED lattice modules that dot interlace shows and the schematic diagram of image data, wherein suspension points place has omitted some modules with LED lattice module 301Wei unit, 302,303 and 304 be divide after one of them LED lattice module.Whole LED display has been divided into the module of the LED dot matrix of 300*200 4*4.While and for example, carrying out LED display Module Division, also can to whole screen, divide according to the LED lattice module of 6*4.Can also to LED display, divide by other form, as long as the quantity of ready-portioned LED lattice module is less than or equal to the each maximum collection number of camera.
In described step 2, correction target value comprises chromaticity correction desired value and the gamma correction desired value of three kinds of colors of red, green, blue, and the color triangle that described chromaticity correction desired value forms is included in to be proofreaied and correct in the front formed color triangle of red, green, blue coordinate figure.When the demonstration data of all LED lamps and correction target value are integrated in step 2, all demonstration data that collect are arranged according to the arrangement mode of LED display reality, then synthesize by mode and correction target value from left to right, from top to bottom.
LED lamp in each LED lattice module is lighted in a certain order successively.LED lamp in each LED lattice module is generally by from left to right, from top to bottom, lights again, but be not limited to this mode from red to green to blue mode.In the order that shows data acquisition and each LED lattice module, LED lamp lights sequence consensus.Meanwhile, show that the program of Data Integration is sequentially complete corresponding with lighting of LED lamp.As shown in Figure 3, first light No. 1 position of all LED lattice modules in Fig. 3, and show red, correcting camera carries out data acquisition to this state, after having gathered, then No. 2 positions of lighting all LED lattice modules, and showing redness, correcting camera carries out data acquisition to this state again.Order according to 1～16, has gathered after redness successively, then gathers in the same way green and blue.In like manner, also can be according to first lighting position No. 16, then from position, No. 15 positions to 1, light successively.
If according to traditional correcting mode, LED display need to be divided into 16 regions, each region is 300*200 LED lamp point, then adjusts successively camera lens and aims at these 16 regions and gather.Inefficiency so not only, and can not guarantee the correction consistance between each region.And the mode that adopts dot interlace of the present invention to gather, camera lens only need be aimed at whole LED display, without repeatedly adjusting camera lens, has not only promoted efficiency, has also promoted the consistance that whole screen is proofreaied and correct simultaneously.
The pointwise correction method of the LED display based on above-mentioned, as shown in Figure 2, a kind of means for correcting of LED display pointwise correction method, comprise camera 101, camera control module 102, correction module 103 and display screen control system 104, described camera 101 is fixed on the dead ahead of LED display 106, for gathering every kind of demonstration data that show look of LED lamp.Described camera control module 102 is connected with described camera 101, for sending acquisition instructions and receive the demonstration data that described camera 101 collects to described camera 101.Described correction module 103 is connected with described display screen control system 104 with described camera control module 102 respectively, be used for setting correction target value, and the demonstration data of described correction target value and all LED lamps of receiving from described camera control module 102 are integrated, the correction coefficient that generates LED display 106 also sends to described display screen control system 104.Described display screen control system 104 is connected with described LED display 106, described LED display 106 is divided into each LED lattice module by zone leveling, the LED lamp that in each LED lattice module, sequence number is identical is lighted, at described camera 101, show after data acquisition completes and again the LED lamp that in each LED lattice module, next sequence number is identical lighted and shown data acquisition by described camera 101, order is lighted each LED lamp according to this, until gathered the demonstration data of all LED lamps in each LED lattice module, and after receiving correction coefficient, control described LED display 106 and proofread and correct.
Described means for correcting also comprises Database Systems 105, and described Database Systems 105 are connected with described correction module 103, for storing brightness and the chromaticity coordinate of described LED display 106 each LED lamps.The quantity that described display screen control system 104 is divided into several LED lattice modules LED display 106 by zone leveling is less than or equal to the each maximum collection number of described camera 101.
The correction target value that described correction module 103 is set comprises gamma correction desired value and the chromaticity correction desired value of three kinds of colors of red, green, blue, and the color triangle that described chromaticity correction desired value forms is included in to be proofreaied and correct in the front formed color triangle of red, green, blue coordinate figure.
Generally, described display screen control system 104 is according to from left to right, from top to bottom, from red to green, controls in LED display 106 lighting of LED lamp in each LED lattice module again to blue mode; The acquisition order data that described camera 101 is lighted according to described LED lamp.First light No. 1 position of all LED lattice modules in Fig. 3, and show red, correcting camera shows data acquisition to this state, after having gathered, then No. 2 positions of lighting all LED lattice modules, and show red, correcting camera shows data acquisition to this state again, according to mode as above, the order according to 1～16, gathered after redness successively, then gathered in the same way green and blue.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, 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 protection scope of the present invention.
Claims (10)
1. a pointwise correction method for LED display, is characterized in that, comprises the following steps:
Step 1, for every kind, show look, the LED lamp that in each LED lattice module, sequence number is identical is lighted and shown data acquisition, after collection completes, again the LED lamp that in each LED lattice module, next sequence number is identical is lighted and shown data acquisition, until gathered the demonstration data of all LED lamps in each LED lattice module; Described each LED lattice module is divided and is obtained by zone leveling by LED display;
Step 2, according to step 1, obtain the demonstration data of all LED lamps under various demonstration looks, the demonstration data of all LED lamps that obtain are integrated in conjunction with correction target value, generate the correction coefficient of LED display.
2. the pointwise correction method of LED display according to claim 1, is characterized in that, the quantity that in described step 1, LED display divides by zone leveling the LED lattice module obtaining is less than or equal to the each maximum collection number of camera.
3. the pointwise correction method of LED display according to claim 1, is characterized in that, the LED lamp in described step 1 in each LED lattice module, by from left to right, from top to bottom, is lighted to blue mode from red to green again.
4. the pointwise correction method of LED display according to claim 1, it is characterized in that, in described step 2, correction target value comprises chromaticity correction desired value and the gamma correction desired value of three kinds of colors of red, green, blue, and the color triangle that described chromaticity correction desired value forms is included in to be proofreaied and correct in the front formed color triangle of red, green, blue coordinate figure.
5. the pointwise correction method of LED display according to claim 1, it is characterized in that, when in described step 2, the demonstration data of all LED lamps and correction target value are integrated, the all demonstration data that collect are arranged according to the arrangement mode of LED display reality, then synthesize by mode and correction target value from left to right, from top to bottom.
6. the means for correcting of a LED display pointwise correction method, it is characterized in that, comprise camera, camera control module, correction module and display screen control system, described camera is fixed on the dead ahead of LED display, for gathering every kind of demonstration data that show look of LED lamp; Described camera control module is connected with described camera, for sending acquisition instructions to described camera and receiving the demonstration data that described collected by camera arrives;
Described correction module is connected with described display screen control system with described camera control module respectively, be used for setting correction target value, and the demonstration data of described correction target value and all LED lamps of receiving from described camera control module are integrated, the correction coefficient that generates LED display also sends to described display screen control system;
Described display screen control system is connected with described LED display, described LED display is divided into each LED lattice module by zone leveling, the LED lamp that in each LED lattice module, sequence number is identical is lighted, at described camera, show after data acquisition completes and again the LED lamp that in each LED lattice module, next sequence number is identical is lighted and shown data acquisition by described camera, order is lighted each LED lamp according to this, until gathered the demonstration data of all LED lamps in each LED lattice module, and after receiving correction coefficient, control described LED display and proofread and correct.
7. the means for correcting of LED display pointwise correction method according to claim 6, it is characterized in that, described means for correcting also comprises Database Systems, and described Database Systems are connected with described correction module, for storing brightness and the chromaticity coordinate of each LED lamp of described LED display.
8. the means for correcting of LED display pointwise correction method according to claim 6, it is characterized in that, the quantity of described display screen control system is divided into LED display several LED lattice modules by zone leveling is less than or equal to the each maximum collection number of described camera.
9. the means for correcting of LED display pointwise correction method according to claim 6, it is characterized in that, the correction target value that described correction module is set comprises gamma correction desired value and the chromaticity correction desired value of three kinds of colors of red, green, blue, and the color triangle that described chromaticity correction desired value forms is included in to be proofreaied and correct in the front formed color triangle of red, green, blue coordinate figure.
10. the means for correcting of LED display pointwise correction method according to claim 6, it is characterized in that, described display screen control system is according to from left to right, from top to bottom, from red to green, controls in LED display lighting of LED lamp in each LED lattice module again to blue mode; The acquisition order data that described camera is lighted according to described LED lamp.
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| CN104167174A (en) * | 2014-08-01 | 2014-11-26 | 深圳市奥拓电子股份有限公司 | LED display screen white balance adjustment method and device |
| CN104616599A (en) * | 2015-01-06 | 2015-05-13 | 深圳市奥拓电子股份有限公司 | LED display screen pixel point positioning method, device and LED display screen |
| CN104900188A (en) * | 2015-06-18 | 2015-09-09 | 西安诺瓦电子科技有限公司 | LED display screen uniformity correction method |
| CN104978929A (en) * | 2015-07-06 | 2015-10-14 | 西安诺瓦电子科技有限公司 | Point-by-point correcting method of LED display device, system architecture for correcting, and controller |
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| CN106023886A (en) * | 2016-08-16 | 2016-10-12 | 深圳市灵星雨科技开发有限公司 | LED point-by-point brightness color scale correcting method and system |
| CN106023886B (en) * | 2016-08-16 | 2018-11-13 | 深圳市灵星雨科技开发有限公司 | A kind of point-by-point bright chroma bearing calibration of LED and system |
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| CN110798955A (en) * | 2019-11-11 | 2020-02-14 | 陈天锣 | Lamplight control method and system based on lamp position coordinates and multi-dimensional serial numbers |
| CN110890057A (en) * | 2019-12-06 | 2020-03-17 | 长春希达电子技术有限公司 | LED display screen color matching method based on chromaticity coordinate grading mixing |
| CN111179815A (en) * | 2020-01-07 | 2020-05-19 | 长春希达电子技术有限公司 | Method for collecting and correcting normal brightness and chromaticity of LED display module |
| CN112037709A (en) * | 2020-09-02 | 2020-12-04 | 福建省海佳集团股份有限公司 | LED display screen chroma correction system |
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| CN113191988A (en) * | 2021-05-31 | 2021-07-30 | 浙江大华技术股份有限公司 | Brightness correction method and device, storage medium and electronic device |
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Application publication date: 20140716 |