CN110120207A - Splicing large screen chroma-luminance consistency automatic adjustment system and bearing calibration - Google Patents
Splicing large screen chroma-luminance consistency automatic adjustment system and bearing calibration Download PDFInfo
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- CN110120207A CN110120207A CN201810124207.8A CN201810124207A CN110120207A CN 110120207 A CN110120207 A CN 110120207A CN 201810124207 A CN201810124207 A CN 201810124207A CN 110120207 A CN110120207 A CN 110120207A
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- large screen
- color
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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
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature
Abstract
The present invention provides a kind of splicing large screen chroma-luminance consistency automatic adjustment system and bearing calibration, splicing large screen color, brightness uniformity automatic adjustment system, it is characterized in that, it include: special camera, it is erected at before splicing large screen, chroma-luminance correction module, receive the image of the collected each large screen unit of special camera, calculate the luminance difference and heterochromia of each concatenation unit, and calculate the correction parameter of each large screen unit, RS232 interface, correction parameter is sent to each large screen unit, chroma-luminance adjusts module, it is arranged in each large screen unit, color and the brightness of each large screen unit are adjusted according to correction parameter.Splicing large screen chroma-luminance consistency automatic adjustment system of the invention and bearing calibration can correct the luminance difference and heterochromia of mosaic screen simultaneously, so that the colour consistency effect of combination is promoted well.
Description
Technical field
The present invention relates to a kind of splicing large screen chroma-luminance consistency automatic adjustment system and bearing calibrations, belong to display
Field.
Background technique
Splicing large screen using more and more extensive, application field includes military applications and command system, police service and public
Security system, governability and public service system, traffic administration communicate with broadcasting and TV, display and demonstration and planning application system, energy
Source application and resource system, business and enterprise application system etc., and develop to extensive commercial kitchen area.Therefore, market is protected
The amount of having is very huge, and most users require 7*24 hours, run without interruption within 365 days.Therefore, for its display effect
It is required that being very high.
In existing all kinds of splicing large screen type selectings, due to the difference of each spliced display unit manufacturing process, cause
Brightness and color effect between screen can be variant.In display splicing picture, the picture in mosaic screen intersection exists
Biggish color, brightness vision difference.
Other than the difference of manufacture factory, passes through installation, debugging and deliver the splicing large screen of user in certain time fortune
After row, because of the difference in attenuation of equipment, shield and necessarily lead to brightness and heterochromia between body, and adjusts screen body difference and need profession
Engineer completes, so being typically necessary mosaic screen producer sends someone to make house calls, substantially increase the Service Operation of enterprise at
This.Moreover, after quality guarantee period, user needs additional payment that mosaic screen producer is asked to make house calls, and substantially increases user's
Maintenance cost.Therefore, how to save splicing large screen manufacturing firm enterprises service operation cost and user maintenance cost at
Urgent problem.
Summary of the invention
The purpose of the present invention is to provide a kind of splicing large screen chroma-luminance consistency automatic adjustment system and correction sides
Method, to be conveniently automatically adjusted to splicing large screen chroma-luminance consistency.
Present invention employs following technical solutions:
A kind of splicing large screen color, brightness uniformity automatic adjustment system characterized by comprising special camera,
It is erected at before splicing large screen, chroma-luminance correction module, receives the collected each large screen unit of special camera
Image, calculates the luminance difference and heterochromia of each concatenation unit, and calculates the correction parameter of each large screen unit,
Correction parameter is sent to each large screen unit by RS232 interface, and chroma-luminance adjusts module, is arranged in each large screen list
In member, color and the brightness of each large screen unit are adjusted according to correction parameter.
Further, splicing large screen color of the invention, brightness uniformity automatic adjustment system can also have such
Feature: where the special camera is communicated by USB interface and chroma-luminance correction module.
Further, splicing large screen color of the invention, brightness uniformity automatic adjustment system can also have such
Feature: where chroma-luminance correction module sends test instruction to splicing large screen by RS232 interface.
Further, splicing large screen color of the invention, brightness uniformity automatic adjustment system can also have such
Feature: where chroma-luminance correction module when in use, first configures the relevant operating parameter configuration of splicing large screen, including spells
Connect the scale, concatenation unit resolution ratio and color of large screen and the parameter information of brightness uniformity adjustment target.
The present invention also provides the bearing calibration of a kind of splicing large screen color, brightness uniformity adjust automatically, feature exists
In including the following steps:
Step 1 separates the main adjusting option for influencing tri- kinds of colors of R, G, B, respectively from CIE1931 chromatogram
R, the offset and gain of G, B value,
Step 2: non-linear ratio's relationship of R, G, B yield value Yu chromaticity coordinates X, Y is separated from chromatogram, wherein red
The gain color value of colouring component R and the value of chromaticity coordinates X are at non-linear direct ratio, the gain color value and chromaticity coordinates Y value Cheng Fei of green component G
Linear direct ratio, and the value of the gain color value of blue component B and chromaticity coordinates X, Y is at non-linear inverse ratio,
Step 3: setting one group of standard color data data as a comparison, marking this data is Xs, Ys；Chroma-luminance school
The color parameter that positive module acquires every time, is labeled as X, Y, is compared with standard value, according to pre-set range of tolerable variance, obtains
9 kinds of different permutation and combination out,
Step 4: chroma-luminance correction module is by being respectively increased or reducing red component R, green component G, blue component
The value of B reaches equal with a reference value, when the chromaticity coordinates of each concatenation unit all reaches it is consistent with reference to chromaticity coordinates when, it is automatic to adjust
Whole realization of goal, adjustment terminate；
Step 5: chroma-luminance correction module automatically saves the optimized parameter that last time obtains, work terminates.
Further, the bearing calibration of splicing large screen color, brightness uniformity adjust automatically of the invention, feature exist
In: in step 1, it is default value by offset setting, carries out dynamic adjustment by only changing yield value.
Advantageous effect of the invention
Splicing large screen chroma-luminance consistency automatic adjustment system of the invention and bearing calibration can correct spelling simultaneously
The luminance difference and heterochromia of screen are connect, so that the colour consistency effect of combination is promoted well.
Adjustment method of the invention is easy to operate, and debugging process is automatically performed by software, passes through engineer's hand compared to tradition
The method that work is adjusted, effectively increases the efficiency of debugging.Further, since the debugging of the system is automatically performed by algorithm, avoid
Dependence of the conventional method to commissioning engineer personal experience, so that this method has very big reproducibility.This method is being spliced
There is preferable application prospect in screen industry.
Detailed description of the invention
Fig. 1 is a kind of color of splicing large screen provided by the invention, brightness uniformity automatic adjustment system workflow
Figure；
Specific embodiment
Illustrate a specific embodiment of the invention below in conjunction with attached drawing.
As shown in Figure 1, for a kind of splicing large screen color provided by the invention, brightness uniformity automatic adjustment system, packet
It includes:
Step S1, system hardware and software environmental structure set up the dedicated camera shooting for having USB interface before splicing large screen
Head, core equipment of the camera as the Image Acquisition of splicing large screen；Chroma-luminance correction module, for correcting color, bright
Spend parameter；USB interface built in camera, as the image and control instruction between camera and chroma-luminance correction module
Transmission；
The higher the better for selected camera pixel, while to have USB interface, it is to be ensured that camera can completely be shot
The picture of entire splicing large screen.USB interface is used for image and control between camera and chroma-luminance correction module simultaneously
The transmission of instruction.
Step S2 opens chroma-luminance correction module, configures the relevant operating parameter configuration of splicing large screen, including splicing
Scale, concatenation unit resolution ratio, color and brightness uniformity adjustment target component information of large screen etc., complete preparation.
Step S3, chroma-luminance correction module send test instruction, all splicings to splicing large screen by RS232 interface
Unit is after receiving test instruction, automatically into test pictures；
Step S4, chroma-luminance correction module issue image capture instruction to camera by camera internal USB interface,
Step S5, camera start to be continuously shot multiple pictures after receiving acquisition instructions,
Taken picture is transferred to chroma-luminance correction module by USB interface by step S6；
Step S7 after chroma-luminance correction module receives image information, starts the luminance difference for calculating each concatenation unit
And heterochromia；
Step S8, judges whether colour consistency meets the requirements, if the calculated difference value of institute is smaller, meets and sets in advance
Fixed requirement, then correcting process terminates；If the value that difference value is set before being more than, enters in next step；
Step S9, chroma-luminance correction module are joined according to the correction that the difference value between each concatenation unit calculates every unit
Number,
The correction parameter calculated is sent to mosaic screen by RS232 interface by step S10, and mosaic screen is receiving school
By the display parameters of chroma-luminance adjustment module adjust automatically screen after positive parameter；
Repeat the above steps S4 to S10, until the color of splicing large screen, luminance difference value are wanted less than what is be previously set
It asks, then the color of splicing large screen, brightness adjust automatically and correction terminate.
Table 1: the RGB gain parameter and chromaticity coordinates gone out by CIE1931 chromatogram glass
Non-linear relation
Table 2: the parameter combination of the standard value and actual acquisition value that automatically correct.
As shown in Table 1 and Table 2, the correction side based on above-mentioned splicing large screen color, brightness uniformity automatic adjustment system
Method, this method by analysis world luminous lighting committee CIE formulate CIE1931 chromatogram, and therefrom separate influence R,
G, the main adjusting option of tri- kinds of colors of B is the offset and gain of R, G, B value, totally 6 major parameters.Meanwhile being simplified
Offset setting is default value, carries out dynamic adjustment by only changing yield value by design treatment；
In the method, non-linear ratio's relationship of R, G, B yield value Yu chromaticity coordinates X, Y is separated from chromatogram, is had
Body include red component (R) gain color value and chromaticity coordinates X value at non-linear direct ratio, the gain color value of green component (G) with
Chromaticity coordinates Y value is at non-linear direct ratio, and the gain color value of blue component (B) and the value of chromaticity coordinates X, Y are at non-linear inverse ratio.
In the method, it is set as standard color by the optimum value obtained to splicing large screen test of many times for one group
Data, while the standard value as color contrast data.And on this basis, range of tolerable variance is preset, obtains the arrangement of coldest days of the year end kind
Combination.Correction software takes different adjustable strategies by identification different parameters combination, it is known that last collected chroma data
Reach in table 2 state of combination 5, that is, the chromaticity coordinates of target screen is identical as given reference chromaticity coordinates, at this time target screen
The adjustment of curtain terminates.Reach the chromaticity coordinates of all concatenation units of entire splicing large screen all and refers to chromaticity coordinates one
It causes, reaches the color of entire splicing large screen, brightness adjust automatically target is achieved.
It is specific as follows:
Step 1, separating from the CIE1931 chromatogram that CIE (the international luminous lighting committee) formulates influences R, G, B
The main adjusting option of three kinds of colors is the offset and gain of R, G, B value, totally 6 major parameters, and simplifies and consider, offset is set
It is set to default value, carries out dynamic adjustment by only changing yield value；
Step 2 separates non-linear ratio's relationship of R, G, B yield value Yu chromaticity coordinates X, Y, wherein red from chromatogram
The gain color value of colouring component (R) and the value of chromaticity coordinates X are at non-linear direct ratio, the gain color value and chromaticity coordinates Y value of green component (G)
At non-linear direct ratio, and the gain color value of blue component (B) and the value of chromaticity coordinates X, Y are at non-linear inverse ratio.
Step 3, data, this data are thought by test of many times to one group of standard color data of setting as a comparison
Optimum value, marking this data is Xs, Ys；The color parameter (being labeled as X, Y) that correction software acquires every time is compared with standard value
Compared with obtaining 9 kinds of different permutation and combination according to pre-set range of tolerable variance；
Step 4, correction software are divided by identifying that different permutation and combination is moved in circles using different adjustable strategies
Do not increase or decrease red component (R), green component (G), blue component (B) value reach equal with a reference value, when each
When the chromaticity coordinates of a concatenation unit all reaches consistent with reference to chromaticity coordinates, adjust automatically realization of goal, adjustment terminates；
Step 5, correction software automatically save the optimized parameter that last time obtains, and work terminates.
Claims (6)
1. a kind of splicing large screen color, brightness uniformity automatic adjustment system characterized by comprising
Special camera is erected at before splicing large screen,
Chroma-luminance correction module receives the image of the collected each large screen unit of special camera, and it is single to calculate each splicing
The luminance difference and heterochromia of member, and the correction parameter of each large screen unit is calculated,
Correction parameter is sent to each large screen unit by RS232 interface,
Chroma-luminance adjusts module, is arranged in each large screen unit, adjusts each large screen unit according to correction parameter
Color and brightness.
2. splicing large screen color as described in claim 1, brightness uniformity automatic adjustment system, it is characterised in that:
Wherein, the special camera is communicated by USB interface and chroma-luminance correction module.
3. splicing large screen color as described in claim 1, brightness uniformity automatic adjustment system, it is characterised in that:
Wherein, chroma-luminance correction module sends test instruction to splicing large screen by RS232 interface.
4. splicing large screen color as described in claim 1, brightness uniformity automatic adjustment system, it is characterised in that:
Wherein, chroma-luminance correction module when in use, first configures the relevant operating parameter configuration of splicing large screen, including splicing
The parameter information of scale, concatenation unit resolution ratio and color and brightness uniformity the adjustment target of large screen.
5. a kind of bearing calibration of splicing large screen color, brightness uniformity adjust automatically, which is characterized in that including walking as follows
It is rapid:
Step 1 separates the main adjusting option for influencing tri- kinds of colors of R, G, B, respectively R, G, B from CIE1931 chromatogram
The offset and gain of value,
Step 2: non-linear ratio's relationship of R, G, B yield value Yu chromaticity coordinates X, Y is separated from chromatogram, wherein red point
The gain color value of R and the value of chromaticity coordinates X are measured into non-linear direct ratio, the gain color value of green component G is with chromaticity coordinates Y value at non-linear
Direct ratio, and the value of the gain color value of blue component B and chromaticity coordinates X, Y is at non-linear inverse ratio,
Step 3: setting one group of standard color data data as a comparison, marking this data is Xs, Ys；Chroma-luminance straightening die
The color parameter that block acquires every time is labeled as X, Y, is compared with standard value, according to pre-set range of tolerable variance, obtains 9
The different permutation and combination of kind,
Step 4: chroma-luminance correction module, which passes through, is respectively increased or reduces red component R, green component G, blue component B
Value reaches equal with a reference value, when the chromaticity coordinates of each concatenation unit all reaches it is consistent with reference to chromaticity coordinates when, adjust automatically
Realization of goal, adjustment terminate；
Step 5: chroma-luminance correction module automatically saves the optimized parameter that last time obtains, work terminates.
6. the bearing calibration of splicing large screen color, brightness uniformity adjust automatically as claimed in claim 5, feature exist
In:
In step 1, it is default value by offset setting, carries out dynamic adjustment by only changing yield value.
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| CN201810124207.8A CN110120207A (en) | 2018-02-07 | 2018-02-07 | Splicing large screen chroma-luminance consistency automatic adjustment system and bearing calibration |
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| CN201810124207.8A CN110120207A (en) | 2018-02-07 | 2018-02-07 | Splicing large screen chroma-luminance consistency automatic adjustment system and bearing calibration |
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Cited By (7)
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| CN110379355A (en) * | 2019-08-16 | 2019-10-25 | 深圳供电局有限公司 | A kind of control system and control method of large screen display wall |
| CN111402825A (en) * | 2020-03-31 | 2020-07-10 | 浙江宇视科技有限公司 | Screen correction method, device and system and logic board |
| CN111798785A (en) * | 2020-06-30 | 2020-10-20 | 上海摩勤智能技术有限公司 | Debugging method, electronic device and storage medium |
| CN113035118A (en) * | 2021-03-17 | 2021-06-25 | 福建捷联电子有限公司 | Method for correcting color temperature and brightness consistency of multiple display screens |
| CN113870727A (en) * | 2021-11-11 | 2021-12-31 | 深圳市芯智科技有限公司 | Display adjusting method and device of spliced screen, computer equipment and storage medium |
| WO2023103102A1 (en) * | 2021-12-09 | 2023-06-15 | 惠州华星光电显示有限公司 | Brightness matching method for display, and display |
| US11967261B2 (en) | 2020-10-27 | 2024-04-23 | Boe Technology Group Co., Ltd. | Method and device for adjusting white balance of spliced screen, electronic device and storage medium |
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