CN101719363A - Luminance uniformity adjusting method and system of displayer - Google Patents
Luminance uniformity adjusting method and system of displayer Download PDFInfo
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- CN101719363A CN101719363A CN200910189514A CN200910189514A CN101719363A CN 101719363 A CN101719363 A CN 101719363A CN 200910189514 A CN200910189514 A CN 200910189514A CN 200910189514 A CN200910189514 A CN 200910189514A CN 101719363 A CN101719363 A CN 101719363A
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Abstract
The invention discloses a luminance uniformity adjusting method and a system of a displayer. The method comprises the following steps of: acquiring the duplicate of a luminance reference picture through the luminance reference picture of a displayer to be adjusted; comparing the luminance reference picture with the duplicate of the luminance reference picture, and then determining the adjusted value of luminance according to the differences of the luminance reference picture and the duplicate of the luminance reference picture; and adjusting the luminance uniformity of the display picture of the displayer according to the adjusted value of the luminance. The system comprises a picture acquirer, an image processor and a memory, wherein the image processor is respectively connected with the picture acquirer and the memory. The invention realizes the adjustment of the luminance uniformity of the displayer in a low-cost mode.
Description
Technical field
The present invention relates to field of display, specifically, relate to a kind of luminance uniformity adjusting method and system of display.
Background technology
At present, LCDs (LCD) is used widely, yet, reason owing to aspects such as technology and costs, the brightness uniformity of LCDs is generally not good, for this reason, prior art generally adopts and increases or improve blooming piece, improve the brightness uniformity that method such as backlight improves LCDs.But the improvement of the increase of these devices or improvement or production technology all can bring the remarkable increase of cost.
Summary of the invention
Because above-mentioned background, the invention provides a kind of luminance uniformity adjusting method and system of display, can improve the brightness uniformity of display in mode cheaply.
In order to solve the problems of the technologies described above, the present invention has adopted following technical scheme:
A kind of luminance uniformity adjusting method of display comprises:
A, obtain luminance reference picture copy by the luminance reference picture of display to be adjusted;
B, contrast luminance reference picture and luminance reference picture copy are determined intensity correction values according to the difference of luminance reference picture and luminance reference picture copy;
C, according to described intensity correction values, the brightness uniformity adjustment is carried out in the display frame of display.
In a kind of embodiment of said method, described luminance reference picture copy obtains by video camera, video camera or imageing sensor.
In a kind of embodiment of said method, described luminance reference picture is a complete white picture.
In a kind of embodiment of said method, described intensity correction values according to pixels unit or the pre-viewing area unit that divides is determined.
In a kind of embodiment of said method, also comprise: repeatedly repeating step A and B, until the intensity correction values precision in default error.
The present invention also provides a kind of brightness uniformity Adjustment System of display, comprises picture getter, image processor and storer, and described image processor is connected respectively with storer with described picture getter; Described picture getter obtains luminance reference picture copy by the luminance reference picture of display to be adjusted; Described image processor contrast luminance reference picture and luminance reference picture copy, difference according to luminance reference picture and luminance reference picture copy is determined intensity correction values, and described intensity correction values is saved in described storer, and described image processor obtains described intensity correction values from described storer, and the brightness uniformity adjustment is carried out in the display frame of display.
In a kind of embodiment of said system, described picture getter is video camera, video camera or imageing sensor.
In a kind of embodiment of said system, described display is LCD or plasma display.
The invention has the beneficial effects as follows: by obtaining the luminance reference picture copy of display to be adjusted, contrast according to luminance reference picture and luminance reference picture copy, obtain required intensity correction values, according to intensity correction values the brightness uniformity adjustment is carried out in the display frame of display, thereby realized the brightness uniformity adjustment of display in a kind of mode cheaply.
Description of drawings
Fig. 1 is the brightness uniformity Adjustment System structural representation of an embodiment of the present invention.
Embodiment
In conjunction with the accompanying drawings the present invention is described in further detail below by embodiment.
Please refer to Fig. 1, the brightness uniformity Adjustment System of the embodiment of the invention comprises picture getter A, image processor B, storer C.Wherein, picture getter A can be video camera or video camera or other imageing sensors.Image processor B can be the various processors of realizing image processing function, for example single-chip microcomputer, FPGA, CPLD, special integrated chip or the like.
When carrying out the brightness uniformity adjustment, mainly carry out as follows:
At first picture getter A is placed LCDs D dead ahead to be adjusted, so that can take the display frame of LCD.Be the accuracy of adjusting, carry out the brightness uniformity adjustment with the luminance reference picture, the luminance reference picture adopts a complete white picture in this example, promptly shows the complete white field signal of a width of cloth on LCDs D, and picture getter A takes the picture that LCDs D actual displayed is come out.That is to say, utilize picture getter A to obtain luminance reference picture copy by the luminance reference picture of LCD to be adjusted.
Owing to the inconsistent reason of LCDs D brightness, the brightness meeting of the diverse location of the picture that picture getter A photographs is different, thereby need carry out the homogeneity adjustment of brightness.During adjustment, after image processor B obtained luminance reference picture copy that picture getter A sends, contrast luminance reference picture and luminance reference picture copy were determined intensity correction values according to both luminance differences, then preserve intensity correction values in storer C.
Wherein, the unit of adjustment of intensity correction values can pixel be a unit, i.e. brightness adjustment is carried out based on each pixel.Also the viewing area that can divide in advance is a unit, also is the brightness adjustment based on ready-portioned each viewing area in advance carrying out.Significantly reduce for default unit of adjustment will make the quantity of default unit of adjustment with the viewing area, regulate the speed thereby improve.For the viewing area, it can be regarded as virtual " pixel ", with the average brightness of the pixel in the viewing area brightness value as the viewing area.
In general, all can there be certain error in actual brightness adjustment, adjust precision for improving, can adopt the mode of repeatedly adjusting, promptly obtain after the intensity correction values, utilize this intensity correction values that the luminance reference picture is carried out the brightness uniformity adjustment, take the luminance reference picture again by picture getter A then, obtain new luminance reference picture copy; Repeat above-mentioned brightness adjustment process, till the brightness value error of each the default unit of adjustment on the LCDs D that picture getter A photographs reaches the requirement of setting, the precision that is intensity correction values is in default error, and last image processor B will be deposited among the storer C by repeatedly adjusting the final intensity correction values of determining.
During normal the use, the picture signal that needs show is sent into image processor B, read the intensity correction values of storing among the storer C, after according to intensity correction values this picture signal being proofreaied and correct, deliver to LCDs D and show by image processor B.
Brightness uniformity adjustment of the present invention goes for the product of various use LCDs, for example in the LCD or LCD TV of computer.
The present invention according to the inhomogeneous situation of brightness of display screen, carries out precorrection by Flame Image Process, significantly improves the brightness uniformity of LCD televisor.Principle is adjusted in above-mentioned brightness, also can be applied to PDP (Plasma Display Panel, plasma panel) and wait in other display devices.
Above content be in conjunction with concrete embodiment to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. the luminance uniformity adjusting method of a display is characterized in that, comprising:
A, obtain luminance reference picture copy by the luminance reference picture of display to be adjusted;
B, contrast luminance reference picture and luminance reference picture copy are determined intensity correction values according to the difference of luminance reference picture and luminance reference picture copy;
C, according to described intensity correction values, the brightness uniformity adjustment is carried out in the display frame of display.
2. the method for claim 1 is characterized in that, described luminance reference picture copy obtains by video camera, video camera or imageing sensor.
3. as claim 1 method, it is characterized in that described luminance reference picture is a complete white picture.
4. the method for claim 1 is characterized in that, described intensity correction values according to pixels unit or the pre-viewing area unit that divides is determined.
5. as the arbitrary described method of claim 1-4, it is characterized in that, also comprise: repeatedly repeating step A and B, until the intensity correction values precision in default error.
6. the brightness uniformity Adjustment System of a display is characterized in that, comprises picture getter, image processor and storer, and described image processor is connected respectively with storer with described picture getter; Described picture getter obtains luminance reference picture copy by the luminance reference picture of display to be adjusted; Described image processor contrast luminance reference picture and luminance reference picture copy, difference according to luminance reference picture and luminance reference picture copy is determined intensity correction values, and described intensity correction values is saved in described storer, and described image processor obtains described intensity correction values from described storer, and the brightness uniformity adjustment is carried out in the display frame of display.
7. system as claimed in claim 6 is characterized in that, described picture getter is video camera, video camera or imageing sensor.
8. system as claimed in claim 6 is characterized in that, described luminance reference picture is a complete white picture.
9. system as claimed in claim 6 is characterized in that, described intensity correction values according to pixels unit or the pre-viewing area unit that divides is determined.
10. as the arbitrary described system of claim 6-9, it is characterized in that described display is LCD or plasma display.
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| CN200910189514A CN101719363A (en) | 2009-11-23 | 2009-11-23 | Luminance uniformity adjusting method and system of displayer |
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| CN200910189514A CN101719363A (en) | 2009-11-23 | 2009-11-23 | Luminance uniformity adjusting method and system of displayer |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101937653A (en) * | 2010-09-27 | 2011-01-05 | 彩虹集团公司 | Method for adjusting subregion brightness consistency |
| CN103425441A (en) * | 2012-05-17 | 2013-12-04 | 中国长城计算机深圳股份有限公司 | Computer and display debug system thereof |
| CN103456278A (en) * | 2012-05-31 | 2013-12-18 | 奇菱科技股份有限公司 | Digital image processing system and digital image processing method |
| CN104103255A (en) * | 2013-04-07 | 2014-10-15 | 深圳富泰宏精密工业有限公司 | Display screen correction system and method |
| CN104361879A (en) * | 2014-11-28 | 2015-02-18 | 东南大学 | Display calibrating method |
| CN105280157A (en) * | 2014-05-30 | 2016-01-27 | 纬创资通股份有限公司 | Apparatus and method for image analysis and image display |
| CN105679221A (en) * | 2016-03-31 | 2016-06-15 | 广东欧珀移动通信有限公司 | Chromatic aberration detection method and device and terminal |
| CN105869552A (en) * | 2016-03-31 | 2016-08-17 | 广东欧珀移动通信有限公司 | Display screen detection method, detection apparatus and terminal |
| CN105898292A (en) * | 2016-01-06 | 2016-08-24 | 中山大学 | 3D display subjective luminance uniformity quantitative measurement method and device |
| CN107741825A (en) * | 2016-03-31 | 2018-02-27 | 广东欧珀移动通信有限公司 | A kind of adjusting method of brightness, adjusting means and terminal and medium product |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101937653A (en) * | 2010-09-27 | 2011-01-05 | 彩虹集团公司 | Method for adjusting subregion brightness consistency |
| CN103425441A (en) * | 2012-05-17 | 2013-12-04 | 中国长城计算机深圳股份有限公司 | Computer and display debug system thereof |
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| CN104103255B (en) * | 2013-04-07 | 2018-09-07 | 深圳富泰宏精密工业有限公司 | Display screen correction system and method |
| CN105280157A (en) * | 2014-05-30 | 2016-01-27 | 纬创资通股份有限公司 | Apparatus and method for image analysis and image display |
| CN104361879A (en) * | 2014-11-28 | 2015-02-18 | 东南大学 | Display calibrating method |
| CN105898292A (en) * | 2016-01-06 | 2016-08-24 | 中山大学 | 3D display subjective luminance uniformity quantitative measurement method and device |
| CN105869552A (en) * | 2016-03-31 | 2016-08-17 | 广东欧珀移动通信有限公司 | Display screen detection method, detection apparatus and terminal |
| CN107741825A (en) * | 2016-03-31 | 2018-02-27 | 广东欧珀移动通信有限公司 | A kind of adjusting method of brightness, adjusting means and terminal and medium product |
| CN105679221A (en) * | 2016-03-31 | 2016-06-15 | 广东欧珀移动通信有限公司 | Chromatic aberration detection method and device and terminal |
| CN105869552B (en) * | 2016-03-31 | 2019-03-15 | Oppo广东移动通信有限公司 | A kind of detection method of display screen, detection device and terminal |
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Application publication date: 20100602 |