CN103578429B - A kind of LED display screen system and bright concealed wire bearing calibration thereof - Google Patents
A kind of LED display screen system and bright concealed wire bearing calibration thereof Download PDFInfo
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Abstract
The invention discloses a kind of LED display screen system and bright concealed wire bearing calibration thereof.This system comprises LED display, LED indicative control unit, and show data and the bright concealed wire display data acquisition equipment generating bright concealed wire image-forming information for gathering bright concealed wire from LED display, the bright concealed wire correction coefficient calculation of bright concealed wire correction coefficient calculating is carried out according to bright concealed wire image-forming information.The method comprises plays white screen, bright concealed wire data acquisition, the step that bright concealed wire correction coefficient calculates and bright concealed wire corrects.Have employed the LED display screen system of the bright concealed wire bearing calibration of technical solution of the present invention LED display screen system, due to optical imagery information for foundation, correct precisely, the bright concealed wire caused because of the collimation error can be avoided to regulate mistake.Use bright concealed wire correction coefficient software automatically to calculate bright concealed wire correction coefficient, adopt bright concealed wire correcting algorithm, computational accuracy is high, generates bright concealed wire correction file by module, is convenient to management.This technology is applied in lease LED display and there is special ageing and dirigibility arc-shaped LED display screen aspect.
Description
Technical field
The present invention relates to technical field of LED display, be specifically related to a kind of LED display screen system and bright concealed wire control method thereof.
Background technology
In current LED display screen system, it realizes the system architecture of full frame pointwise correction as shown in Figure 1, and this system comprises: LED display, display data acquisition, correction coefficient calculating, LED display and control four part.During system works, the image-forming information of LED display is obtained by display data acquisition equipment, calculate correction coefficient by image-forming information and generate correction file, by LED display control program, correction file is outputted to each lamp point of LED display again, thus realize LED display pointwise correction.
Be spliced because LED display shows module by some LED usually, by the impact of the factor such as fault of construction and machining precision, LED shows the total and normal pitch in splicing gap between module and there are differences.Spacing is crossed conference and is caused producing one " concealed wire " at splicing gap place during display, spacing is too small, can cause producing one " bright line " at splicing gap place during display, the existence of " bright concealed wire " can have a strong impact on the display effect of LED display, thus needs to improve.
In addition, existing pointwise correction technology existing defects, this is because due to the restriction of environmental factor, can there is bright line because of excessive correction in the screen body edge of the LED display after correction, only have and could repair this bright line by the correction coefficient of frontier point.
And existing pointwise correction technology is when regulating bright concealed wire, suitable bright concealed wire correction coefficient can only be found by manually making repeated attempts, and sending full frame correction data, a large amount of time and manpower can be wasted like this; Finally can only carry out visual judgement by human eye, there is subjective factor, final bright concealed wire correction error is larger.
Especially for the LED display for leasing, due to needs often random splicing LED display module or LED display unit casing, the splicing spacing that LED shows between module or LED display unit casing can change, bright concealed wire phenomenon is more serious, adopt existing alignment technique to carry out correcting the time spent long, and calibration result is not good.
For arc-shaped LED display screen, due to the impact by the factor such as shape and assembling, usually concealed wire is there is in outer arcuate screen at module edge joint position, usually bright line is there is in arc screen at module edge joint position, and pointwise correction technology can be subject to many limitations when correcting arc-shaped LED display screen, when processing arc-shaped LED display screen bright concealed wire, effect is more undesirable.
In sum, although existing LED display can carry out pointwise correction, need long time, and calibration result is not good, thus needs to improve.
Summary of the invention
One of technical matters to be solved by this invention is to provide a kind of LED display screen system, solves the problem that current LED display screen system can not correct bright concealed wire fast and effectively.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of LED display screen system, comprise: LED display and LED indicative control unit, also comprise: for gathering bright concealed wire display data from described LED display and generating the bright concealed wire display data acquisition equipment of bright concealed wire image-forming information, and carry out bright concealed wire correction coefficient according to described bright concealed wire image-forming information and calculate and the bright concealed wire correction coefficient calculation generating bright concealed wire correction file.
In preferred technical scheme, described bright concealed wire display data acquisition equipment is plane brightness/Colour measuring instrument.
Two of technical matters to be solved by this invention is corresponding bright concealed wire bearing calibrations providing a kind of LED display screen system, solves the problem that current LED display screen system can not correct bright concealed wire fast and effectively.For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A bright concealed wire bearing calibration for LED display screen system, it realizes the correction of bright concealed wire based on aforesaid a kind of LED display screen system, and this bright concealed wire bearing calibration comprises the steps:
S1), play white screen: be exactly light LED display, and it is complete white to allow LED display show;
S2), bright concealed wire data acquisition: be exactly obtain each LED in LED display by described bright concealed wire display data acquisition equipment to show the bright concealed wire image-forming information splicing gap place between module;
S3), bright concealed wire correction coefficient calculate: be exactly by bright concealed wire correction coefficient calculation according to described bright concealed wire image-forming information, calculate bright concealed wire correction coefficient, and generate bright concealed wire correction file;
S4), bright concealed wire corrects: be exactly by LED indicative control unit by described bright concealed wire correction file, output to each LED in LED display and show the lamp point that module splices gap place, thus the correction of realization to the bright concealed wire of LED display.
In preferred technical scheme, described bright concealed wire data acquisition specifically shows in units of module by LED, uses plane brightness/Colour measuring instrument to measure module angle 0-3, the brightness value at 0-3 place, limit, and the brightness value of non-edge.
In preferred technical scheme, described bright concealed wire correction coefficient calculates specifically:
Bright concealed wire coefficient correction software is automatically calculated by bright concealed wire image-forming information and produces bright concealed wire correction coefficient, and generates bright concealed wire correction file; The specific algorithm wherein calculating bright concealed wire correction coefficient is as follows:
Bright concealed wire correction coefficient=1 of non-corner lamp point,
The brightness value of the brightness value/edge of the correction coefficient=non-edge at bright line place,
The brightness value of the brightness value/non-edge of the correction coefficient=edge at concealed wire place.
In preferred technical scheme, described bright concealed wire corrects specifically: adopt lookup table technology, by LED display control program, bright concealed wire correction file is outputted to each LED and show module, on the brightness that each bright concealed wire correction coefficient is taken corresponding lamp point or chromatic value, thus realize the adjustment to bright concealed wire.
Further in preferred technical scheme, described lookup table technology is specifically: the lamp point shown by LED on module is divided into three types, 1 is the starting point of often going, 2 is the intermediate point of often going, 3 is the end point of often going, these vertex types are made a look-up table, exist in LED display control program, lamp point that just can be corresponding according to look-up table fast finding during scanning display.
In preferred technical scheme, described bright concealed wire display data acquisition equipment is plane brightness/Colour measuring instrument.
The invention has the beneficial effects as follows:
Have employed the LED display screen system of the bright concealed wire bearing calibration of technical solution of the present invention LED display screen system, due to optical imagery information for foundation, correct precisely, the bright concealed wire caused because of the collimation error can be avoided to regulate mistake.Use bright concealed wire correction coefficient software automatically to calculate bright concealed wire correction coefficient, adopt bright concealed wire correcting algorithm, computational accuracy is high, generates bright concealed wire correction file by module, is convenient to management.Use lookup table technology can locate each bright concealed wire lamp point that will regulate fast and accurately.Full frame pointwise correction technology has inconvenience to the LED display for leasing and arc-shaped LED display screen, as correction time is long, the shortcomings such as correcting mode underaction, this technology is applied in lease LED display and there is special ageing and dirigibility arc-shaped LED display screen aspect.
Accompanying drawing explanation
Fig. 1 is the theory diagram of existing LED display screen system and pointwise correction method thereof;
Fig. 2 is the theory diagram of LED display screen system and bright concealed wire bearing calibration thereof in the specific embodiment of the invention;
Fig. 3 is that in the specific embodiment of the invention, in LED display, each LED shows the schematic diagram of module;
Fig. 4 is the schematic diagram that in the specific embodiment of the invention, LED shows each lamp point in module;
Fig. 5 is the schematic diagram of 4 LED display modules in LED display in the specific embodiment of the invention.
Embodiment
A kind of LED display screen system that this embodiment provides and bright concealed wire bearing calibration thereof are as shown in Figure 2.This LED display screen system also comprises: the display of LED display, bright concealed wire data acquisition equipment, bright concealed wire correction coefficient calculation, LED indicative control unit four part.
During the work of this LED display screen system:
First play white screen, light LED display exactly, and it is complete white to allow LED display show;
Then carry out bright concealed wire data acquisition, obtain each LED in LED display by described bright concealed wire display data acquisition equipment exactly and show the image-forming information splicing gap place between module;
Carry out again bright concealed wire correction coefficient calculate, be exactly by bright concealed wire correction coefficient calculation according to described image-forming information, calculate bright concealed wire correction coefficient, and generate bright concealed wire correction file;
Finally carry out bright concealed wire correction, be exactly pass through LED indicative control unit by described bright concealed wire correction file, output to the lamp point that each LED in LED display shows module splicing gap place, thus realize the concealed wire correction bright to LED display.
Described bright concealed wire data acquisition, specifically as shown in Figure 3 and Figure 4, shows in units of module by LED, uses plane brightness/Colour measuring instrument to measure module angle 0-3, the brightness value at 0-3 place, limit, and the brightness value of non-edge.
Described bright concealed wire correction coefficient calculates and refers to: bright concealed wire coefficient correction software is automatically calculated by the brightness data that brightness instrument gathers and produces bright concealed wire correction coefficient, and specific algorithm is as follows:
Bright concealed wire correction coefficient=1 of non-corner lamp point,
The brightness value of the brightness value/edge of the correction coefficient=non-edge at bright line place,
The brightness value of the brightness value/non-edge of the correction coefficient=edge at concealed wire place,
The computational accuracy of this algorithm is 0.01, in units of module, generates the file comprising the bright concealed wire correction coefficient of angle 0-3 and the bright concealed wire correction coefficient of limit 0-3.
Bright concealed wire corrects: adopt lookup table technology, by LED display control program, bright concealed wire correction file is outputted to each LED and shows module, each bright concealed wire correction coefficient taken on the brightness value of corresponding lamp point, thus realize the adjustment to bright concealed wire.
Lookup table technology is specially:
The lamp point that LED shows on module can be divided into three types, and 1 is the starting point of often going, and 2 is the intermediate point of often going, and 3 is the end point of often going, and these vertex types is made a look-up table, exists in LED display control program.
For the module of 4 shown in Fig. 5, the height of each module is h, during scanning display, searches corresponding lamp point according to look-up table:
As row=1, h, h+1,2h, all types of point all needs to be multiplied by bright concealed wire correction coefficient.
As row ≠ 1, h, h+1,2h, the point of Class1 and type 3 needs to be multiplied by bright concealed wire correction coefficient, and the point of type 2 is Null Spot, does not need to process.
The present invention adopts bright concealed wire alignment technique with optical imagery information for foundation, corrects precisely, and the bright concealed wire caused because of the collimation error can be avoided to regulate mistake.Use bright concealed wire correction coefficient software automatically to calculate bright concealed wire correction coefficient, adopt bright concealed wire correcting algorithm, computational accuracy is high, generates bright concealed wire correction file by module, is convenient to management.Use lookup table technology can locate each bright concealed wire lamp point that will regulate fast and accurately.Full frame pointwise correction technology has inconvenience to the LED display for leasing and arc-shaped LED display screen, as correction time is long, the shortcomings such as correcting mode underaction, this technology is applied in lease LED display and there is special ageing and dirigibility arc-shaped LED display screen aspect.
The bright concealed wire alignment technique that the present invention adopts is that speed is exceedingly fast, and does not need to send full frame correction data from control system bottom amendment brightness or chroma data, can the bright concealed wire of adjustment fast, precisely, flexibly.
The present invention adopts bright concealed wire alignment technique with optical imagery information for foundation, corrects precisely, and the bright concealed wire caused because of the collimation error can be avoided to regulate mistake.In addition use lookup table technology, the bright concealed wire lamp point that each will regulate can be located fast and accurately, avoid lamp point to regulate dislocation.Thus the accurate adjustment realized bright concealed wire.
For the LED display that LED display body and the frequent casing of lease are used with, bright concealed wire alignment technique can complete bright concealed wire in a short period of time and regulate, and is conducive to the quick splicing assembling of LED display.And can batch control be realized, particularly arc-shaped LED display screen, after setting bright concealed wire adjustment factor, even can realize regulating a key of bright concealed wire.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (5)
1. a bright concealed wire bearing calibration for LED display screen system, comprising: LED display and LED indicative control unit, for gathering bright concealed wire display data from described LED display and generating the bright concealed wire display data acquisition equipment of bright concealed wire image-forming information and carry out bright concealed wire correction coefficient according to described bright concealed wire image-forming information and calculate and the bright concealed wire correction coefficient calculation generating bright concealed wire correction file; Bearing calibration comprises the steps:
S1), play white screen: be exactly light LED display, and it is complete white to allow LED display show;
S2), bright concealed wire data acquisition: be exactly obtain each LED in LED display by described bright concealed wire display data acquisition equipment to show the bright concealed wire image-forming information splicing gap place between module;
S3), bright concealed wire correction coefficient calculate: be exactly by bright concealed wire correction coefficient calculation according to described bright concealed wire image-forming information, calculate bright concealed wire correction coefficient, and generate bright concealed wire correction file; Bright concealed wire data acquisition specifically shows in units of module by LED, uses plane brightness/Colour measuring instrument to measure module angle 0-3, the brightness value at 0-3 place, limit, and the brightness value of non-edge;
S4), bright concealed wire corrects: be exactly by LED indicative control unit by described bright concealed wire correction file, output to each LED in LED display and show the lamp point that module splices gap place, thus the correction of realization to the bright concealed wire of LED display.
2. the bright concealed wire bearing calibration of a kind of LED display screen system as claimed in claim 1, is characterized in that, described bright concealed wire correction coefficient calculates specifically:
Bright concealed wire coefficient correction software is automatically calculated by bright concealed wire image-forming information and produces bright concealed wire correction coefficient, and generates bright concealed wire correction file; The specific algorithm wherein calculating bright concealed wire correction coefficient is as follows:
Bright concealed wire correction coefficient=1 of non-corner lamp point,
The brightness value of the brightness value/edge of the correction coefficient=non-edge at bright line place,
The brightness value of the brightness value/non-edge of the correction coefficient=edge at concealed wire place.
3. the bright concealed wire bearing calibration of a kind of LED display screen system as claimed in claim 1, it is characterized in that, described bright concealed wire corrects specifically: adopt lookup table technology, by LED display control program, bright concealed wire correction file is outputted to each LED and show module, on the brightness that each bright concealed wire correction coefficient is taken corresponding lamp point or chromatic value, thus realize the adjustment to bright concealed wire.
4. the bright concealed wire bearing calibration of a kind of LED display screen system as claimed in claim 3, it is characterized in that, described lookup table technology is specifically: the lamp point shown by LED on module is divided into three types, 1 is the starting point of often going, 2 is the intermediate point of often going, and 3 is the end point of often going, and these vertex types is made a look-up table, exist in LED display control program, lamp point that just can be corresponding according to look-up table fast finding during scanning display.
5. as the bright concealed wire bearing calibration of a kind of LED display screen system in Claims 1-4 as described in any one, it is characterized in that, described bright concealed wire display data acquisition equipment is plane brightness/Colour measuring instrument.
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Address after: 518000 1805, tower 2, Shenye Jinyuan Building, No.112, Qingshuihe 1st Road, Qingshuihe community, Luohu District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN AOTO ELECTRONICS Co.,Ltd. Address before: 518000 Guangdong city of Shenzhen province Nanshan District high tech Industrial Park building T2 A6-B Patentee before: SHENZHEN AOTO ELECTRONICS Co.,Ltd. |