CN1865845A - Method for making calibrating plate on flat display screen - Google Patents
Method for making calibrating plate on flat display screen Download PDFInfo
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- CN1865845A CN1865845A CN 200610027982 CN200610027982A CN1865845A CN 1865845 A CN1865845 A CN 1865845A CN 200610027982 CN200610027982 CN 200610027982 CN 200610027982 A CN200610027982 A CN 200610027982A CN 1865845 A CN1865845 A CN 1865845A
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Abstract
The disclosed method to produce scaling plate by 2D display comprises: determining the target shape, size, color and gravity for the display screen, while setting reference ground color and gravity; arranging the pick-up device for shooting in visual angle, adjusting the display brightness and contrast to obtain sharp image; and classifying the reference and background as threshold value by a computer. This invention has well precision, convenient to usage, and can be used as the active light source label plate.
Description
Technical field
What the present invention relates to is the method in a kind of optical measurement field, specifically is a kind of method of making calibrating plate on flat display screen.
Background technology
In the optical measurement field, demarcation is that imaging system is upgraded to a vital step in the measuring system process.Wherein, very big as demarcating himself precision of object to the stated accuracy influence of imaging system.Common scaling board method for making, as print the paper that grid or other reference substances are arranged, and it is attached on the flat board, this method is owing to the printing precision of normal printer often can not guarantee, paste not gentle stretching, and the paper influence of problem such as make moist easily, causing poor, the easy deformation of the consistance of scaling reference on the printer paper, the scaling board of making of these class methods is difficult to realize the demarcation of high precision imaging system.The method for making of another kind of common scaling board is to adopt method such as precision photolithography processing, is coated with blaze and decides object of reference on the scaling board carrier, and this method cost is higher, and the user purchases trouble.In addition, the scaling board that above-mentioned two big class methods are made all is subject to the interference of ambient lighting, when the light intensity of surround lighting changes, calibration result is had considerable influence.
Have not yet to see a kind of report of method for making of controlled active light source scaling board.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, a kind of method of making calibrating plate on flat display screen is proposed, achieve the high-precision demarcation of imaging system, can be used for designing and make precision height, high conformity, active light source scaling board that ambient lighting changing capability easy to use and anti-is strong.
The present invention is achieved by the following technical solutions, what the present invention adopted is the mode of making calibrating plate on flat display screen, at first set the shape of flat-faced screen scaling reference to display, size, color and gray scale, set the color and the gray scale of scaling reference background simultaneously, imaging device is faced the shooting angle of flat-faced screen in the visible angle scope of flat-faced screen, by regulating the brightness and contrast of flat-faced screen, make imaging device clear to the imaging of scaling reference, after imaging device institute pickup image deposited computing machine in, the two distinguished computing machine passing threshold method with scaling reference and background.
Described flat-faced screen, its resolution are higher than the resolution of imaging device in apparent field's scope.
Described flat-faced screen, the deformation quantity of the scaling reference that the glass plate of its outside surface causes is lower than the highest resolution of imaging device.
For the black and white flat-faced screen, the color settings of scaling reference and background thereof is B﹠W or white and black.
For red, green, blue three primary colours flat-faced screen, the scaling reference color settings is a kind of primary colours, two kinds of mix of basic colors, white or black, background color is set at the white high with the scaling reference color contrast, black, a kind of primary colours or two kinds of mix of basic colors, and scaling reference edge non-variegation.
Compared with prior art, the present invention be a kind of method simple, realize easily, be used to design and make the method for precision height, high conformity, controlled active light source scaling board that ambient lighting changing capability easy to use and anti-is strong.
Description of drawings
During making calibrating plate on flat display screen that Fig. 1 adopts for the present invention, under dark room conditions, the positive camera plane display screen of imaging device obtains and deposits in the two field picture in the computing machine.What wherein, flat-faced screen adopted is the common color LCDs.
During making calibrating plate on flat display screen that Fig. 2 adopts for the present invention, except that environment illumination condition difference, other conditions are identical, and the positive camera plane display screen of imaging device obtains and deposit in two two field pictures in the computing machine.What wherein, flat-faced screen adopted is the common color LCDs; Other conditions are identical to be meant that imaging device is constant with the flat-faced screen relative position, imaging device and flat-faced screen parameter are provided with mutually equal.
Among Fig. 2, A is ambient lighting when strong, the positive making calibrating plate on flat display screen image of taking of imaging device; B is ambient lighting when more weak, the positive making calibrating plate on flat display screen image of taking of imaging device.
Embodiment
Technical scheme for a better understanding of the present invention is described in further detail below in conjunction with drawings and Examples.
As shown in Figure 1, 2, during the making calibrating plate on flat display screen that adopts for the present invention, imaging device under the varying environment illumination condition, the image that positive camera plane display screen is obtained.Flat-faced screen is common liquid crystal display, PDP display or pure screen cathode ray screen etc., but the deformation of the scaling reference that the glass plate of its outside surface causes should be lower than the highest resolution of imaging device, for example the deformation quantity of glass shell of giant-screen CRT display screen own and the caused scaling reference of outer implosion guard can surpass the highest resolution of imaging device, so be not suitable for realizing method of the present invention.On flat-faced screen, equal, the consistent size of length and width between each pixel.Wherein, the spatial resolution of flat-faced screen is higher than the highest resolution of imaging device in apparent field's scope.The scaling reference that generates among the figure on the scaling board is square gridiron pattern array, when flat-faced screen adopt be the black and white flat-faced screen time, the color settings of scaling reference is black or white, its background is set at white or black; When flat-faced screen adopt be red, green, blue three primary colours flat-faced screen the time, the color settings of scaling reference is a kind of primary colours, two kinds of mix of basic colors, white or black, its background is set at the white high with the scaling reference color contrast, black, a kind of primary colours or two kinds of mix of basic colors, and scaling reference edge non-variegation.Imaging device is positive camera plane display screen under the varying environment illumination condition, and the shooting angle of imaging device is in the visible angle scope of flat-faced screen.Can make imaging device clear by regulating the brightness and contrast of flat-faced screen to the imaging of demarcating thing.Imaging device is common ccd video camera etc.After image that the imaging device is absorbed deposited computing machine in, passing threshold method computing machine can the two distinguishes with scaling reference and background.
Because what adopt is that pixel size is the color LCD screen of 0.297mm, the square gridiron pattern of each 50 pixel * 50 pixels is of a size of 14.85mm, and shape, the size identical property of scaling reference are very good.Simultaneously, the brightness of popular in the market color LCD screen self generally can both reach 250cd/m
2More than, contrast generally all surpasses 400: 1, so imaging device absorbs scaling reference and background on this flat-faced screen, its relative brightness and contrast are subjected to the ambient lighting variable effect minimum.The brightness and contrast's of flat-faced screen scope is 0 to 100, and generally selecting brightness for use is near 30, and contrast is near 80.Flat-faced screen adopts when being the common color liquid crystal display, can generate the plane reference plate of red-Bai, green-Bai, three kinds of different base colors of indigo plant-Bai respectively, the inside and outside parameter that is fit to very much apply to demarcate the three primary colors ccd video camera.
Claims (5)
1, a kind of method of making calibrating plate on flat display screen, it is characterized in that, what adopt is the mode of making calibrating plate on flat display screen, at first set the shape of flat-faced screen scaling reference to display, size, color and gray scale, set the color and the gray scale of scaling reference background simultaneously, imaging device is faced the shooting angle of flat-faced screen in the visible angle scope of flat-faced screen, by regulating the brightness and contrast of flat-faced screen, make imaging device clear to the imaging of scaling reference, after imaging device institute pickup image deposited computing machine in, the two distinguished computing machine passing threshold method with scaling reference and background.
2, the method for making calibrating plate on flat display screen according to claim 1 is characterized in that, described flat-faced screen, and its resolution is higher than the highest resolution of imaging device in apparent field's scope.
3, according to the method for claim 1 or 2 described making calibrating plate on flat display screen, it is characterized in that, described flat-faced screen, the deformation quantity of the scaling reference that the glass plate of its outside surface causes is lower than the highest resolution of imaging device.
4, the method for making calibrating plate on flat display screen according to claim 1 is characterized in that, for the black and white flat-faced screen, the color settings of scaling reference and background thereof is B﹠W or white and black.
5, the method for making calibrating plate on flat display screen according to claim 1, it is characterized in that, for red, green, blue three primary colours flat-faced screen, the scaling reference color settings is a kind of primary colours, two kinds of mix of basic colors, white or black, background color is set at the white high with the scaling reference color contrast, black, a kind of primary colours or two kinds of mix of basic colors, and scaling reference edge non-variegation.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100279829A CN100385198C (en) | 2006-06-22 | 2006-06-22 | Method for making calibrating plate on flat display screen |
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| CNB2006100279829A CN100385198C (en) | 2006-06-22 | 2006-06-22 | Method for making calibrating plate on flat display screen |
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| CN1865845A true CN1865845A (en) | 2006-11-22 |
| CN100385198C CN100385198C (en) | 2008-04-30 |
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Cited By (12)
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| CN101949693A (en) * | 2010-08-03 | 2011-01-19 | 河北工业大学 | Method for calibrating three-dimensional imaging system |
| CN102094314A (en) * | 2010-12-07 | 2011-06-15 | 吉林大学 | Cluster sticky fiber counting and cross section form analyzing system and rapid image processing method |
| CN102221409A (en) * | 2011-04-12 | 2011-10-19 | 华南理工大学 | Near infrared calibration board design method |
| CN104240227A (en) * | 2013-06-24 | 2014-12-24 | 富泰华工业（深圳）有限公司 | Image analysis system and method |
| CN106352806A (en) * | 2016-08-10 | 2017-01-25 | 中国科学技术大学 | High-precision calibration method for stereoscopic vision three-dimensional digital image correlation measurement |
| CN106596073A (en) * | 2016-12-28 | 2017-04-26 | 歌尔科技有限公司 | Method and system for detecting image quality of optical system, and testing target plate |
| CN106709952A (en) * | 2016-11-18 | 2017-05-24 | 南京仁光电子科技有限公司 | Automatic calibration method of display screen |
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| CN108133497A (en) * | 2018-01-12 | 2018-06-08 | 力帆实业(集团)股份有限公司 | A kind of calibration place of 360 ° of panorama systems and scaling method |
| CN110232716A (en) * | 2019-05-31 | 2019-09-13 | 深圳市道通智能航空技术有限公司 | A kind of camera calibration method, apparatus and electronic equipment |
| CN111009015A (en) * | 2019-12-25 | 2020-04-14 | 上海御微半导体技术有限公司 | Calibration device and calibration method |
| CN113567434A (en) * | 2021-06-15 | 2021-10-29 | 成都新锐科技发展有限责任公司 | Calibration method of battery piece detection equipment based on machine vision |
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| JPH06233333A (en) * | 1993-01-29 | 1994-08-19 | Imaizumi Shokai:Kk | Calibration method/system for video camera |
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| CN1295651C (en) * | 2004-05-13 | 2007-01-17 | 上海交通大学 | Composite calibration method of mold surface optical measurement system |
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2006
- 2006-06-22 CN CNB2006100279829A patent/CN100385198C/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101949693A (en) * | 2010-08-03 | 2011-01-19 | 河北工业大学 | Method for calibrating three-dimensional imaging system |
| CN101949693B (en) * | 2010-08-03 | 2012-01-11 | 河北工业大学 | Method for calibrating three-dimensional imaging system |
| CN102094314A (en) * | 2010-12-07 | 2011-06-15 | 吉林大学 | Cluster sticky fiber counting and cross section form analyzing system and rapid image processing method |
| CN102221409A (en) * | 2011-04-12 | 2011-10-19 | 华南理工大学 | Near infrared calibration board design method |
| CN102221409B (en) * | 2011-04-12 | 2012-09-26 | 华南理工大学 | Near infrared calibration board design method |
| CN104240227A (en) * | 2013-06-24 | 2014-12-24 | 富泰华工业（深圳）有限公司 | Image analysis system and method |
| CN104240227B (en) * | 2013-06-24 | 2018-06-15 | 富泰华工业（深圳）有限公司 | image analysis system and method |
| CN106352806A (en) * | 2016-08-10 | 2017-01-25 | 中国科学技术大学 | High-precision calibration method for stereoscopic vision three-dimensional digital image correlation measurement |
| CN106709952A (en) * | 2016-11-18 | 2017-05-24 | 南京仁光电子科技有限公司 | Automatic calibration method of display screen |
| CN106709952B (en) * | 2016-11-18 | 2018-11-13 | 南京仁光电子科技有限公司 | A kind of automatic calibration method of display screen |
| CN106596073A (en) * | 2016-12-28 | 2017-04-26 | 歌尔科技有限公司 | Method and system for detecting image quality of optical system, and testing target plate |
| CN107167081A (en) * | 2017-06-02 | 2017-09-15 | 哈尔滨师范大学 | A kind of field bird ovum measurement apparatus |
| CN107167081B (en) * | 2017-06-02 | 2021-06-15 | 哈尔滨师范大学 | Open-air bird egg measuring device |
| CN108133497A (en) * | 2018-01-12 | 2018-06-08 | 力帆实业(集团)股份有限公司 | A kind of calibration place of 360 ° of panorama systems and scaling method |
| CN108133497B (en) * | 2018-01-12 | 2023-11-07 | 力帆实业(集团)股份有限公司 | Calibration field and calibration method of 360-degree panoramic system |
| CN110232716A (en) * | 2019-05-31 | 2019-09-13 | 深圳市道通智能航空技术有限公司 | A kind of camera calibration method, apparatus and electronic equipment |
| CN111009015A (en) * | 2019-12-25 | 2020-04-14 | 上海御微半导体技术有限公司 | Calibration device and calibration method |
| CN111009015B (en) * | 2019-12-25 | 2023-05-16 | 上海御微半导体技术有限公司 | Calibration device and calibration method |
| CN113567434A (en) * | 2021-06-15 | 2021-10-29 | 成都新锐科技发展有限责任公司 | Calibration method of battery piece detection equipment based on machine vision |
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