CN105390092B - LED display image processing method and device and its application - Google Patents
LED display image processing method and device and its application Download PDFInfo
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- CN105390092B CN105390092B CN201510907142.0A CN201510907142A CN105390092B CN 105390092 B CN105390092 B CN 105390092B CN 201510907142 A CN201510907142 A CN 201510907142A CN 105390092 B CN105390092 B CN 105390092B
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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
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- Physics & Mathematics (AREA)
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- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of El Displays (AREA)
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Abstract
The present invention relates to a kind of LED display image processing method and device and its application.It the treating method comprises：(a) LED point location is carried out to LED display image；(b) judge whether LED point location result is correct；(c) when LED point location result is judged as incorrect, LED display image is shown on display interface, and responds user's input operation and processing is modified to LED display image to obtain the LED display image after correcting process using erasing rubber function and/or lamp point filling function；(d) LED point location, and repeat step (b) are carried out to the LED display image after correcting process；And (e) basis is judged as that correct LED point location result extraction LED lights chrominance information.The present invention can solve correction scene because ambient light, reflective etc. are disturbed, or LED display has the point location Problem-Error that normal bright light, dead lamp etc. are brought by point location again after being modified to the LED display image of appearance point Wrong localization.
Description
Technical field
The present invention relates to LED display analysis and alignment technique field, more particularly to a kind of LED display image processing method
Method and device and its application.
Background technology
It is aobvious that LED display pointwise correction technology can allow user to be substantially improved with very short time and low-down cost
The uniformity of display screen, significantly improves picture quality.The extraction of the original bright chroma information of LED display is the of pointwise correction technology
One step, to obtain the original bright chroma information of each LED lamp point, it is necessary to first position the position of each LED lamp point.
The method of LED point location has a lot, such as rim detection, template matches, no matter how, all it is finally
Each LED lamp point is outlined or irised out in image is gathered.
1) have around the LED display being corrected around very strong ambient light interference or LED display exist it is reflective existing
As the light part beyond LED point is easy to be taken as LED point, so as to easily cause point location to fail.
If 2) a large amount of dead lamps or bad point on LED display be present, point location may be caused to offset.
Which if 3) four drift angles of LED display all have dead lamp, may cause no matter to position LED since drift angle
Lamp point can all have missing inspection situation, that is, the LED for positioning to obtain is counted out fewer than reality.
If 4) normal bright module on LED display be present, in dot interlace gathers image process, it may appear that unnecessary to put forward
LED point, influences point location.
The above 1)~4) situation all may result in the failure of LED point locations, so that correcting process can not continue.
To avoid the generation of afore-mentioned, a kind of existing technical scheme is that collection display screen is completely black when correction
Image does point location and bright chroma again as background image after the monochrome image and background image subtraction for collecting timing
Information extraction, but this kind of technical scheme can not solve reflective problem, can not also solve normal bright module and the excessive problem of dead lamp.It is existing
Some another technical solutions are that dead the lamp number or ratio allowed is set when dead lamp is more on LED display, and it is dead
It is effective during lamp negligible amounts, but still may result in when dead lamp quantity is more point location and have deviation, and because there is provided permit
Perhaps dead lamp ratio, the point location result detected meet setting, so as to cause the bright chroma information of extraction untrue, after correction
Lack of homogeneity.
The content of the invention
Therefore, the present invention proposes a kind of LED display image processing method, to solve correction scene due to ambient light, anti-
Light etc. disturbs, or LED display has the point location Problem-Error that normal bright light, normal concealed light (dead lamp) etc. are brought.
In a first aspect, the embodiment of the present invention proposes a kind of LED display image processing method, it includes step：(a) it is right
LED display image carries out LED point location and obtains LED point location result；(b) whether just LED point location result is judged
Really；(c) when LED point location result is judged as incorrect, the LED display image is shown on display interface, and ring
Place is modified to the LED display image using erasing rubber function and/or lamp point filling function using the input operation at family
Manage to obtain the LED display image after correcting process；(d) LED point is carried out to the LED display image after correcting process to determine
Position is to obtain LED point location result, and repeat step (b)；And (e) basis is judged as correct LED point location result
Extraction LED lights chrominance information.
In one embodiment of the invention, the step (b) is specially to judge what is detected in LED point location result
Whether LED point line number, columns and number are consistent with LED display actual conditions.
In one embodiment of the invention, in step (c), the erasing rubber function is used for LED display figure of blacking
Subregion as in work(is filled with ambient light part of blacking, reflector segment and/or the unnecessary LED point lighted, the lamp point
LED point is filled to repair dead lamp in the subregion that can be used in LED display image.
Second aspect, the embodiment of the present invention propose a kind of LED display pointwise correction method, and it includes step：Gather LED
Display image；Any one foregoing LED display image processing method is carried out to the LED display image to obtain LED
Lamp lights chrominance information；And chrominance information lighted according to the LED LED is calculated and light chromaticity correction coefficient.
The third aspect, a kind of LED display analysis of Uniformity method that the embodiment of the present invention proposes, it includes step：Adopt
Collect the LED display image of target LED display；Any one foregoing LED display figure is carried out to the LED display image
As processing method to obtain LED lights chrominance information；And the LED lighted according to the LED in chrominance information is lighted
Colour situation determines the show uniformity of the target LED display.
Fourth aspect, a kind of image capture device parameters analysis method that the embodiment of the present invention proposes, including step：Utilize
Image capture device gathers LED display image；Any one foregoing LED display figure is carried out to the LED display image
As processing method to obtain LED lights chrominance information；And according to the LED light the chrominance information amount of being exposed and
LED point spot size is analyzed to determine whether the parameter of described image collecting device is reasonable.
5th aspect, the embodiment of the present invention propose a kind of LED display image processing apparatus, and it includes：LED point location
Module, for carrying out LED point location to LED display image to export LED point location result；Judge module, for sentencing
Whether the LED point location result of the disconnected LED point location module output is correct；Image modification module, for sentencing when described
When disconnected module judges that the LED point location result is incorrect, the LED display images for user is shown on display interface
Image correction processing is carried out based on man-machine interaction mode to obtain the LED display image after correcting process and export to described
LED point location module；Wherein, described image correcting module includes rubber module and lamp point filling submodule, the rubber
Skin eraser module is used to respond the subregion that user's input operation is blacked in LED display image, and the lamp point fills submodule
The subregion filling LED point that block is used in LED display image；And information extraction modules, for sentencing according to
Disconnected module is judged as that correct LED point location result extraction LED lights chrominance information.
In one embodiment of the invention, described image correcting module also includes revocation submodule, previous for cancelling
Secondary operation.
In one embodiment of the invention, the judge module is specifically used for judging in the LED point location result
Whether LED point line number, columns and the number detected be consistent with LED display actual conditions.
In one embodiment of the invention, the rubber module is specifically in LED display image of blacking
Subregion is with ambient light part of blacking, reflector segment and/or the unnecessary LED point lighted, the lamp point filling submodule tool
LED point is filled to repair dead lamp in the subregion that body is used in LED display image.
From the foregoing, it will be observed that the embodiment of the present invention to the LED display image of appearance point Wrong localization by being modified processing
Again point location afterwards, therefore can solve correction scene because ambient light, reflective etc. are disturbed, or LED display exist normal bright light,
The point location Problem-Error that normal concealed light (dead lamp) etc. is brought.
By the detailed description below with reference to accompanying drawing, other side of the invention and feature become obvious.But it should know
Road, the accompanying drawing is only the purpose design explained, not as the restriction of the scope of the present invention.It is it should also be noted that unless another
Point out outside, it is not necessary to which scale accompanying drawing, they only try hard to conceptually illustrate structure and flow described herein.
Brief description of the drawings
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in detail.
Fig. 1 is a kind of module diagram of LED display image processing apparatus of the embodiment of the present invention.
Embodiment
In order to facilitate the understanding of the purposes, features and advantages of the present invention, below in conjunction with the accompanying drawings to the present invention
Embodiment be described in detail.
The embodiment of the present invention propose a kind of technical scheme be：During LED display pointwise correction, LED is shown
Screen image carries out point location, when point location result is not inconsistent with LED screen body actual conditions, shows LED display images for user
Amendment, correcting mode include blacking ambient light or interference light part on LED display image, blacken the name of the unnecessary LED point lighted,
Enter the filling of portable lighter point to repair dead lamps of LED etc., treat to re-start point location after the completion of image correction to continue correcting process.
Will be detailed below it is a kind of using earlier figures as the LED display pointwise correction process of amendment scheme, it is for example
Comprise the following steps：
Step (1)：Gather LED display image；Herein, it can be controlled by correction software and light mesh on LED display
Mark each LED point in region and shot using image capture device such as camera and can obtain LED display image；
Here, target area can be the partial display area of the whole viewing area either LED display of LED display.
Step (2)：First LED point location is carried out to the LED display image collected.It is understood that entering
Before row LED point location, typically also zone location first can be carried out to LED display image and be used for obtaining display screen area
LED point location.
Step (3)：Judge whether LED point location result is correct, that is, judge what is detected in LED point location result
Whether LED point line number, columns and number are consistent with LED display actual conditions；Directly carried out if point location result is correct
Step (6), conversely, carrying out step (4) if point location result mistake；
Step (4)：LED display image is shown on display interface, and provides following three functions so that user is to LED
Display image does correcting process：A) erasing rubber, for wiping the subregion on image and being replaced with black background, its is main
For ambient light part of blacking, reflector segment and the unnecessary LED point lighted；B) lamp point is filled, for clicking or right button image
On some region, fill LED point, the LED point of filling is replaced with circular, oval or rectangle, can adjust filling
The size of LED point, it is mainly used in four that repair the substantially rectangular display screen area that dead lamp, especially zone location obtain
Dead lamp existing for drift angle；A kind of effective lamp point fill method needs to fill one of the periphery in the region of lamp point for duplication herein
Then LED point affixes to the region for needing to fill lamp point；C) cancel, for cancelling previous operation.
Step (5)：Re-start LED point location to the image after correcting process, and repeat step (3) is to judge LED
Whether lamp point location result is correct.
Step (6)：LED is extracted according to correct point location result and lights chrominance information.
Step (7)：Chrominance information calculating LED is lighted according to the LED of extraction and lights chromaticity correction coefficient, as specific
Computational methods be then prior art, will not be repeated here.
After obtaining LED and lighting chromaticity correction coefficient, LED is lighted into chromaticity correction coefficient and uploads and preserves to hard
Part, such as upload and preserve to the reception card in the control system of LED display.
From the foregoing, it will be observed that the above embodiment of the present invention proposes to be modified LED display image for example manual blacking of processing
Disturb light part, normal bright light part or fill up LED point manually and put with replacing dead lamp position, it can solve scene due to environment
Light, reflective etc. disturb, or LED display has the point location Problem-Error that normal bright light, normal concealed light (dead lamp) etc. are brought, well
Solve the problems, such as that partial correction scene can not complete correcting process.
Further it will be understood that above-mentioned image correcting method is not limited to LED display pointwise correction point location mistake
Journey, can also be applied to other LED display image analysis process, for example, detection LED display uniformity, LED display by
Image capture device is analyzed before point calibration such as whether camera parameter is reasonable., can in LED display uniformity detection process
Colour situation is lighted with the LED lighted according to the LED of extraction in chrominance information to determine that the display of LED display is equal
Even property；During whether image capture device parameter is reasonably analyzed, chrominance information can be lighted according to the LED of extraction and entered
Row light exposure and the analysis of lamp point spot size, and then can determine whether the parameter of image capture device closes according to analysis result
Reason.
Finally, Fig. 1 is referred to, a kind of LED display image processing apparatus that the embodiment of the present invention proposes can be by pacifying
Software equipped with computer come realize and for example including：LED point location module 11, judge module 13, image modification module 15
And information extraction modules 17.
Wherein, LED point location module 11 is used to carry out LED point location to LED display image to export LED point
Positioning result；Judge module 13 is used to judge whether the LED point location result of the LED point location module output is correct；
Image modification module 15 is used for when the judge module judges that the LED point location result is incorrect, on display interface
After showing that the LED display images for user carries out image correction processing to obtain correcting process based on man-machine interaction mode
LED display image is simultaneously exported to the LED point location module；Wherein, described image correcting module 15 includes rubber
Module 151, lamp point filling submodule 153 and revocation submodule 155, rubber module 151 are used to respond user's input operation
The subregion blacked in LED display image, lamp point filling submodule 153 are used for the part area in LED display image
LED point is filled in domain, and revocation submodule 155 is used to cancel preceding once-through operation；And information extraction modules 17 are used for basis
The judge module is judged as that correct LED point location result extraction LED lights chrominance information.As for modules 11,
13rd, 15 and 17 concrete function details can be found in abovementioned steps (2) to step (5), therefore will not be repeated here.
The above described is only a preferred embodiment of the present invention, any formal limitation not is made to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any to be familiar with this professional technology people
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
For the equivalent embodiment of equivalent variations, as long as being the technical spirit pair according to the present invention without departing from technical solution of the present invention content
Any simple modification, equivalent change and modification that above example is made, in the range of still falling within technical solution of the present invention.
Claims (8)
1. a kind of LED display image processing method, it is characterised in that including step：
(a) LED point location is carried out to the LED display image collected using image capture device and obtains LED point location
As a result；
(b) judge whether LED point location result is correct；
(c) when LED point location result is judged as incorrect, the LED display image is shown on display interface, and ring
Function is filled to the LED using erasing rubber function and/or lamp point based on the input operation that man-machine interaction mode is carried out using family
Display image is modified processing to obtain the LED display image after correcting process；The erasing rubber function is used to black
Subregion in LED display image is described with ambient light part of blacking, reflector segment and/or the unnecessary LED point lighted
LED point is filled to repair dead lamp in the subregion that lamp point filling function is used in LED display image；
(d) LED point location is re-started to the LED display image after correcting process to obtain LED point location result, and
Repeat step (b)；And
(e) basis is judged as that correct LED point location result extraction LED lights chrominance information.
2. LED display image processing method as claimed in claim 1, it is characterised in that step (b) is specially to judge LED
Whether LED point line number, columns and the number detected in lamp point location result be consistent with LED display actual conditions.
3. a kind of LED display pointwise correction method, including step：
LED display image is gathered using image capture device；
LED display image processing method as described in claim 1 to 2 any one is carried out to the LED display image
Chrominance information is lighted to obtain LED；And
Chrominance information is lighted according to the LED LED is calculated and light chromaticity correction coefficient.
4. a kind of LED display analysis of Uniformity method, including step：
Utilize the LED display image of image capture device collection target LED display；
LED display image processing method as described in claim 1 to 2 any one is carried out to the LED display image
Chrominance information is lighted to obtain LED；And
The LED in chrominance information is lighted according to the LED light Colour situation and determine the target LED display
Show uniformity.
5. a kind of image capture device parameters analysis method, including step：
LED display image is gathered using image capture device；
LED display image processing method as described in claim 1 to 2 any one is carried out to the LED display image
Chrominance information is lighted to obtain LED；And
The chrominance information amount of being exposed and the analysis of LED point spot size are lighted according to the LED to determine that described image is adopted
Whether the parameter for collecting equipment is reasonable.
A kind of 6. LED display image processing apparatus, it is characterised in that including：
LED point location module, determine for carrying out LED point to the LED display image collected using image capture device
Position is to export LED point location result；
Judge module, for judging whether the LED point location result of the LED point location module output is correct；
Image modification module, for when the judge module judges that the LED point location result is incorrect, in display interface
After the upper display LED display images for user is based on man-machine interaction mode progress image correction processing to obtain correcting process
LED display image and export to the LED point location module；Wherein, described image correcting module includes rubber
Module and lamp point filling submodule, the rubber module, which is used to responding user's input operation, blacks in LED display image
Subregion with ambient light part of blacking, reflector segment and/or the unnecessary LED point lighted, the lamp point fills submodule
LED point is filled for the subregion in LED display image to repair dead lamp；And
Information extraction modules, for being judged as that correct LED point location result extraction LED is lighted according to the judge module
Chrominance information.
7. LED display image processing apparatus as claimed in claim 6, it is characterised in that described image correcting module also wraps
Revocation submodule is included, for cancelling preceding once-through operation.
8. LED display image processing apparatus as claimed in claim 6, it is characterised in that the judge module is specifically used for
Judge the LED point line number, columns and the number that are detected in the LED point location result whether with the actual feelings of LED display
Condition is consistent.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510907142.0A CN105390092B (en) | 2015-12-09 | 2015-12-09 | LED display image processing method and device and its application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510907142.0A CN105390092B (en) | 2015-12-09 | 2015-12-09 | LED display image processing method and device and its application |
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| CN105390092A CN105390092A (en) | 2016-03-09 |
| CN105390092B true CN105390092B (en) | 2018-01-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107633806B (en) * | 2016-07-15 | 2019-12-24 | 西安诺瓦星云科技股份有限公司 | Shading correction processing method for LED display device |
| CN111210764B (en) * | 2020-01-21 | 2021-01-12 | 卡莱特（深圳）云科技有限公司 | LED screen correction method and correction device |
| CN114114064A (en) * | 2020-08-11 | 2022-03-01 | 西安钛铂锶电子科技有限公司 | Display unit detection method and device |
| CN112687231B (en) * | 2020-12-31 | 2022-10-04 | 深圳Tcl数字技术有限公司 | Brightness and chrominance data extraction method, equipment and computer readable storage medium |
| CN113571010B (en) * | 2021-07-29 | 2022-10-21 | 西安诺瓦星云科技股份有限公司 | Brightness and chrominance information acquisition method, device and system and computer readable storage medium |
| CN113327544B (en) * | 2021-08-04 | 2021-10-19 | 卡莱特云科技股份有限公司 | LED display screen contrast improving method based on diagonal display and LED display screen |
| CN117949389B (en) * | 2024-03-26 | 2024-06-18 | 北京凯视达科技股份有限公司 | Point-to-point correction method and system for display screen |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102231251B (en) * | 2011-06-21 | 2013-08-21 | 华南理工大学 | Camera photo-based method for point-by-point inhomogeneous analysis and correction of LED (Light Emitting Diode) |
| CN103778887B (en) * | 2013-03-21 | 2016-05-18 | 西安电子科技大学 | The brightness correcting method of LED display unit and device |
| CN103413527A (en) * | 2013-08-19 | 2013-11-27 | 西安诺瓦电子科技有限公司 | Image acquisition method and display method for LED display screen correction |
| CN104217684B (en) * | 2014-09-11 | 2016-09-07 | 西安诺瓦电子科技有限公司 | LED bad point processing method and LED display control method |
| CN104200775A (en) * | 2014-09-22 | 2014-12-10 | 西安电子科技大学 | LED defective pixel treatment method |
| CN104900188B (en) * | 2015-06-18 | 2017-12-08 | 西安诺瓦电子科技有限公司 | LED display uniformity correcting method |
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