CN102419334A - Device and method capable of simultaneously detecting evenness and cleanness of plane mirror - Google Patents
Device and method capable of simultaneously detecting evenness and cleanness of plane mirror Download PDFInfo
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- CN102419334A CN102419334A CN2011102692018A CN201110269201A CN102419334A CN 102419334 A CN102419334 A CN 102419334A CN 2011102692018 A CN2011102692018 A CN 2011102692018A CN 201110269201 A CN201110269201 A CN 201110269201A CN 102419334 A CN102419334 A CN 102419334A
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Abstract
The invention discloses a device capable of simultaneously detecting the evenness and cleanness of a plane mirror. The device comprises a horizontal transfer platform, a linear light source, an optical imaging appliance and a control center, wherein the horizontal transfer platform is used for transferring a to-be-detected plane mirror; the linear light source is arranged above the horizontal transfer platform, and used for illuminating the plane mirror; the optical imaging appliance is arranged above the horizontal transfer platform, and used for carrying out continuous optical imaging on the plane mirror; and the control center is connected with the optical imaging appliance, and used for comparing optically-imaged images of the to-be-detected plane mirror with a preset standard sample, and judging the evenness and cleanness of the plane mirror. With the moving of the plane mirror, a photographing device shoots images continuously, and after one-dimensional images shot by the photographing device are merged, a two-dimensional image of reflected light rays of the whole plane mirror is obtained; then, gray histogram analysis is carried out on the image, and the gray histogram of the plane mirror is compared with that of a standard sample mirror; aiming at the grey value of each pixel in the image, an operation of judging whether a corresponding mirror-surface position point of the pixel belongs to an unclean point or an uneven area is performed, and the uncleanness degree of the mirror-surface position point is evaluated according to the grey value.
Description
Invention field
The present invention relates to optics industry automatic detection system field, in particular to a kind of device and method that utilizes machine vision and image processing method to come while detection plane mirror flatness and surface clearness.
Background technology
In recent years, machine vision is widely used in industry member with relevant with it later image treatment technology, in particular for the demarcation on all kinds of production lines, details location and defects detection, improves into the complete optics automatic technology of a cover at present.
The detection of level crossing flatness and cleanliness does not still have ripe standard method and equipment at present at home and abroad.Can accomplish the detection to level crossing flatness and cleanliness fast, accurately simultaneously, the detection of especially whole (greater than one square metre) level crossing is an effective way that is used for assessing the level crossing quality, in industry, has higher using value.
Summary of the invention
To the deficiency of prior art, first purpose of the present invention is to combine machine vision and image processing techniques to propose the new device of a kind of detection plane mirror flatness simultaneously and cleanliness.
Second purpose of the present invention is to combine machine vision and image processing techniques to propose the implementation method of a kind of detection plane mirror flatness simultaneously and cleanliness.
First aspect, the present invention provides the device of a kind of detection plane mirror flatness simultaneously and cleanliness, and said device comprises horizontal transmission platform, linear light sources and optical imaging device.Said delivery platform width is greater than the width of level crossing, and length is preferably the several times of level crossing length greater than the length of level crossing.The strict level of delivery platform, the transfer rate of its transmission level crossing and the shutter frequency that camera installation is taken pictures keep synchronously.Linear light sources is positioned at delivery platform top, and about 20 to 50 centimetres apart from the delivery platform upper surface, the direct reflection of its Line of light of sending through level crossing is after camera lens is positioned at the camera installation of about 20 to 100 centimeters in delivery platform top receives.Angle equals camera installation and advances angle between light direction and level crossing between linear light sources light direction and level crossing, its angle can for 30 degree to 60 degree, preferred 40 degree are to 50 degree, more preferably 45 degree.
Second aspect, the present invention provides the method for a kind of detection plane mirror flatness simultaneously and cleanliness, said method comprising the steps of:
A. transmit one or more surfaces level crossing to be measured;
B. utilize the one of which level crossing of the said at least level crossing to be measured of linear light sources irradiation;
C. optical imaging device carries out continuous optical imagery to this level crossing;
D. the said optical imagery with this level crossing synthesizes a two-dimension picture, and writes down the grey level histogram of this image;
E. the grey level histogram of this grey level histogram and predefined standard model is compared, according to the assessment of the gray-scale value in the grey level histogram of this mensuration its unclean degree and flatness.
Utilization is arranged on the camera installation of level crossing to be measured top and takes the light through said flat mirror reflects, and said shooting began before said level crossing is through said linear light sources irradiation, and after said level crossing all passes through said linear light sources, finishes.
The shutter frequency that the transfer rate of said delivery platform and camera installation are taken pictures keeps synchronously.
If image pixel gray-scale value size is 50% to 95% of standard flat mirror gradation of image average, it is unclean to think that the minute surface of this location point exists, and its unclean degree is proportional to the poor of this pixel gray-scale value and standard flat mirror gradation of image average
For the location point of grey scale pixel value in the composograph less than standard flat mirror gradation of image average 50%, if the adjacent UNICOM of this type of location point region area greater than square meter centimetre magnitude, this sheet UNICOM zone is then for out-of-flatness surface deformation position.
Description of drawings
Fig. 1 is for to utilize optics to come the device synoptic diagram of detection plane mirror flatness and cleanliness according to the present invention.
Embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is carried out detailed description.Should be appreciated that following examples just for the present invention is illustrated, and do not limit protection scope of the present invention.
Diagrammatic sketch 1 is for to utilize optical principle to come the device synoptic diagram of detection plane mirror flatness and cleanliness according to the present invention.Reference numeral 1 is a level crossing, and 2 is linear light sources, and 3 is that 4 is the reflection ray of incident ray after flat mirror reflects by the incident ray of linear light sources emission, and 5 is delivery platform, and 6 is optical lens, and 7 is camera installation, and 8 is the control center of delivery platform.
Level crossing 1 can be any plane mirror, is preferably area greater than 1 square metre level crossing.Delivery platform 5 is used for transmitting level crossing 1, and it has certain length (for example, being the several times of the length of level crossing 1 to be measured), and its width can be longer than the width of level crossing.Perhaps, its width can be greater than the length of level crossing.
Linear light sources 2 can be the LED continuous light source, and its light intensity retention time is stable, fixedly places about 20 to 50 centimeters in delivery platform top, and its length direction is parallel to the Width of delivery wheel, and length should be not less than the width of level crossing.
Optical lens 6 can be tight shot, places camera installation the place ahead.Camera installation 7 (like camera) can be for single or a plurality of, and it places apart from about 20 to 100 centimeters in delivery platform top with camera lens.Camera installation and camera lens go into that angle equals the angle between linear light sources light plane of incidence mirror direction and minute surface normal between light direction and the level crossing normal, can receive the linear light sources light that produces direct reflection through level crossing to guarantee camera installation.
See also as shown in Figure 1ly again, the ultimate principle of optical detection level crossing cleanliness and flatness device is: level crossing 1 is put on the delivery platform 5, and level crossing at the uniform velocity transmits forward with delivery wheel.For example, said speed can for about 20cm/s to about 50cm/s, it comes to confirm as required.The parallel rays 3 of linear light sources 2 emissions shines on the level crossing, and its light produces reflection ray 4 after the level crossing direct reflection, is received by camera installation 7 via optical lens 6 backs.It is synchronous that the transfer rate of mirror is transported at shutter frequency that camera installation is taken pictures and delivery platform motion control center 8.Image after camera installation is taken pictures is undertaken obtaining the analyzing and testing result after the Flame Image Process by computing machine.
Utilize said apparatus, can accomplish the fast detecting of level crossing flatness and cleanliness simultaneously according to following steps:
Step a: utilize the transmission of horizontal transmission platform to lie in a horizontal plane in one or more surfaces surfacing and clean level crossing (it is as standard reference material) on the delivery platform.When transmitting level crossing, the width of level crossing is parallel to the Width of delivery platform.As replacement scheme, the length direction of level crossing can be parallel to the Width of delivery platform.
Step b: utilize linear light sources irradiated plane mirror.The incident direction of linear light sources irradiation light and through the angle between the level crossing normal that delivery wheel transmits between 30 degree to 60 degree, preferred 40 degree are to 50 degree, more preferably 45 degree.
Step c: utilize camera installation to take pictures, to catch the light of linear light sources after flat mirror reflects.Optical lens is housed, camera lens focal plane is positioned on the mirror position of flat mirror reflects source light before the camera installation.The time shutter of camera installation and the aperture size of camera lens are adjusted according to light source intensity, make gray-scale value that camera installation accepts image behind the light probably about 130.Shutter frequency that camera installation is taken pictures and the transfer rate of delivery platform coupling according to the corresponding size in kind of camera installation CCD pixel, guarantee that the composograph Pixel Dimensions after camera installation is taken pictures continuously is consistent with the mirror size that process transmits.The camera installation and the number of shots that are used for whole system imaging are confirmed with the level crossing width according to image resolution ratio requirement and lens focus, under assurance image resolution prerequisite, guarantee that the whole width of level crossing can both be formed images by camera installation.
Steps d: before level crossing transmits the process light source irradiation, start camera installation and begin to take pictures, after level crossing integral body all transmitted light source irradiation, finish to take pictures, the one dimension image that camera installation is taken in the said process is merged into a two-dimensional pixel picture through computer.
Step e: the two-dimension picture to synthetic carries out Flame Image Process, the grey level histogram of analytic record image.Utilize standard reference material that checkout equipment is carried out calibrate, make camera installation have very little variance yields the take pictures grey level histogram of composograph of standard sample minute surface.After accomplishing calibration, the gray average of record standard appearance flat mirror reflects light composograph.
Step f: the unknown level crossing sample to be measured is detected completing steps 1-5.Level crossing thickness to be measured needs in full accord with standard sample level crossing thickness.Minute surface composograph in that camera installation is taken carries out in the Flame Image Process; If image pixel gray-scale value size is 50% to 95% of a standard flat mirror gradation of image average; It is unclean to think that the minute surface of this location point exists, and its unclean degree is proportional to the poor of this pixel gray-scale value and standard flat mirror gradation of image average.For the location point of grey scale pixel value in the composograph less than standard flat mirror gradation of image average 50%, if the adjacent UNICOM of this type of location point region area greater than square meter centimetre magnitude, this sheet UNICOM zone is then for out-of-flatness surface deformation position.
The present invention is applicable to that the level crossing cleanliness that mild or moderate pollutes detect, and it is higher to detect cleanliness resolution, and its resolution is the resolution of camera installation.The present invention is 1 square meter centimetre to the detection resolution of minute surface irregularity degree.
Though for illustrative purposes preferred embodiment is described in detail, under the situation that does not break away from the scope of the invention and spirit, can be made multiple change.Therefore, the invention is not restricted to this, but claim institute restricted portion.
Claims (17)
1. the ability device of detection plane mirror flatness and cleanliness simultaneously is characterized in that, comprising:
The horizontal transmission platform is used to transmit level crossing to be detected;
Linear light sources is positioned at said horizontal transmission platform top, is used to shine said level crossing;
Optical imaging device is positioned at said horizontal transmission platform top, is used for said level crossing is carried out continuous optical imagery;
Control center connects optical imaging device, is used to treat the optical imagery image of surveying level crossing and compares with preset standard model, judges its flatness and cleanliness.
2. device according to claim 1 is characterized in that said optical imaging device comprises one or more camera installations and optical lens.
3. device according to claim 2 is characterized in that, the light that said linear light sources is sent through said flat mirror reflects after camera lens received by said camera installation.
4. device according to claim 2 is characterized in that, the angle between radiation direction that said linear light sources is sent and the said level crossing equals said camera installation and receives the direction of light and the angle between the said level crossing.
5. device according to claim 4 is characterized in that said angle is that 30 degree are to 60 degree.
6. device according to claim 5 is characterized in that said angle is that 40 degree are to 50 degree.
7. the device of stating according to claim 5 is characterized in that said angle is 45 degree.
8. device according to claim 2 is characterized in that linear light sources is positioned at said delivery platform top 20 to 50 centimeters.
9. device according to claim 2 is characterized in that said camera installation is positioned at 20 centimetres of said delivery platform tops to 100 centimeters.
10. device according to claim 1 is characterized in that, the width of said horizontal transmission platform is greater than the width of said level crossing, and length is greater than the length of said level crossing.
11. device according to claim 1 is characterized in that, the width of said horizontal transmission platform is greater than the length of said level crossing.
12. device according to claim 1 is characterized in that, the shutter frequency that the transfer rate of said delivery platform and camera installation are taken pictures keeps synchronously.
13. an ability is the method for detection plane mirror flatness and cleanliness simultaneously, it is characterized in that, may further comprise the steps:
A. transmit one or more surfaces level crossing to be measured;
B. utilize the one of which level crossing of the said at least level crossing to be measured of linear light sources irradiation;
C. optical imaging device carries out continuous optical imagery to this level crossing;
D. the said optical imagery with this level crossing synthesizes a two-dimension picture, and writes down the grey level histogram of this image;
E. the grey level histogram of this grey level histogram and predefined standard model is compared, according to the assessment of the gray-scale value in the grey level histogram of this mensuration its unclean degree and flatness.
14. method as claimed in claim 13; It is characterized in that; Utilization is arranged on the camera installation of level crossing to be measured top and takes the light through said flat mirror reflects; Said shooting began before said level crossing is through said linear light sources irradiation, and after said level crossing all passes through said linear light sources, finished.
15. method as claimed in claim 14 is characterized in that, the shutter frequency that the transfer rate of said delivery platform and camera installation are taken pictures keeps synchronously.
16. method as claimed in claim 13; It is characterized in that; If image pixel gray-scale value size is 50% to 95% of a standard flat mirror gradation of image average; It is unclean to think that the minute surface of this location point exists, and its unclean degree is proportional to the poor of this pixel gray-scale value and standard flat mirror gradation of image average.
17. method as claimed in claim 13; It is characterized in that; For the location point of grey scale pixel value in the composograph less than standard flat mirror gradation of image average 50%; If the adjacent UNICOM of this type of location point region area is greater than square meter centimetre magnitude, this sheet UNICOM zone then is out-of-flatness surface deformation position.
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| CN2011102692018A CN102419334A (en) | 2011-09-13 | 2011-09-13 | Device and method capable of simultaneously detecting evenness and cleanness of plane mirror |
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| CN2011102692018A CN102419334A (en) | 2011-09-13 | 2011-09-13 | Device and method capable of simultaneously detecting evenness and cleanness of plane mirror |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749044A (en) * | 2012-06-26 | 2012-10-24 | 深圳市华星光电技术有限公司 | Parallel detection system and method |
| CN103234483A (en) * | 2012-12-28 | 2013-08-07 | 深圳华用科技有限公司 | Method and device for detecting parallelism of camera chip |
| CN103712570A (en) * | 2012-10-09 | 2014-04-09 | 富士施乐株式会社 | Detection apparatus |
| CN103760172A (en) * | 2014-02-11 | 2014-04-30 | 北京科技大学 | Method for quantitatively characterizing surface clearness of copper material |
| US8743375B2 (en) | 2012-06-26 | 2014-06-03 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Parallelism measuring system and method thereof |
| CN104848808A (en) * | 2015-06-03 | 2015-08-19 | 湖南大学 | Surface roughness detection method and equipment |
| CN104897692A (en) * | 2015-06-16 | 2015-09-09 | 中信戴卡股份有限公司 | Online detection system and method for finish turning effects of aluminum alloy castings |
| CN106290387A (en) * | 2015-06-08 | 2017-01-04 | 杭州中自华内光电科技有限公司 | The method of a kind of reflection method detection photovoltaic panel cleannes and detector |
| CN107356605A (en) * | 2017-05-27 | 2017-11-17 | 华勤通讯技术有限公司 | Eyeglass detection means and method |
| CN108090896A (en) * | 2017-12-14 | 2018-05-29 | 北京木业邦科技有限公司 | Plank flatness detection and its machine learning method, device and electronic equipment |
| CN108344747A (en) * | 2018-02-08 | 2018-07-31 | 芜湖美智空调设备有限公司 | Strainer mesh cleanliness detection method, strainer mesh cleanliness sensor and airhandling equipment |
| CN108827978A (en) * | 2018-08-16 | 2018-11-16 | 东部超导科技（苏州）有限公司 | Superconduction base band surface defects detection system and its detection method |
| CN110455750A (en) * | 2019-08-21 | 2019-11-15 | 京东方科技集团股份有限公司 | Mirror surface defogging method, frost removal for mirror face and Intelligent mirror |
| CN111156932A (en) * | 2020-03-10 | 2020-05-15 | 凌云光技术集团有限责任公司 | Mirror surface material roughness detection device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009151298A (en) * | 2007-12-20 | 2009-07-09 | Nikon Corp | Exposure method and apparatus, and method for manufacturing device |
| CN102105780A (en) * | 2008-07-24 | 2011-06-22 | 麻省理工学院 | Systems and methods for imaging using absorption |
-
2011
- 2011-09-13 CN CN2011102692018A patent/CN102419334A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009151298A (en) * | 2007-12-20 | 2009-07-09 | Nikon Corp | Exposure method and apparatus, and method for manufacturing device |
| CN102105780A (en) * | 2008-07-24 | 2011-06-22 | 麻省理工学院 | Systems and methods for imaging using absorption |
Non-Patent Citations (1)
| Title |
|---|
| 冯飞等: "基于MEMS技术的全光热成像芯片与***的研制", 《半导体学报》 * |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014000334A1 (en) * | 2012-06-26 | 2014-01-03 | 深圳市华星光电技术有限公司 | Parallelism detection system and method |
| US8743375B2 (en) | 2012-06-26 | 2014-06-03 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Parallelism measuring system and method thereof |
| CN102749044B (en) * | 2012-06-26 | 2015-06-24 | 深圳市华星光电技术有限公司 | Parallel detection system and method |
| CN102749044A (en) * | 2012-06-26 | 2012-10-24 | 深圳市华星光电技术有限公司 | Parallel detection system and method |
| CN103712570A (en) * | 2012-10-09 | 2014-04-09 | 富士施乐株式会社 | Detection apparatus |
| CN103234483A (en) * | 2012-12-28 | 2013-08-07 | 深圳华用科技有限公司 | Method and device for detecting parallelism of camera chip |
| CN103760172A (en) * | 2014-02-11 | 2014-04-30 | 北京科技大学 | Method for quantitatively characterizing surface clearness of copper material |
| CN104848808B (en) * | 2015-06-03 | 2017-08-25 | 湖南大学 | A kind of Surface Roughness Detecting Method and equipment |
| CN104848808A (en) * | 2015-06-03 | 2015-08-19 | 湖南大学 | Surface roughness detection method and equipment |
| CN106290387A (en) * | 2015-06-08 | 2017-01-04 | 杭州中自华内光电科技有限公司 | The method of a kind of reflection method detection photovoltaic panel cleannes and detector |
| CN104897692A (en) * | 2015-06-16 | 2015-09-09 | 中信戴卡股份有限公司 | Online detection system and method for finish turning effects of aluminum alloy castings |
| CN107356605A (en) * | 2017-05-27 | 2017-11-17 | 华勤通讯技术有限公司 | Eyeglass detection means and method |
| CN108090896A (en) * | 2017-12-14 | 2018-05-29 | 北京木业邦科技有限公司 | Plank flatness detection and its machine learning method, device and electronic equipment |
| CN108344747A (en) * | 2018-02-08 | 2018-07-31 | 芜湖美智空调设备有限公司 | Strainer mesh cleanliness detection method, strainer mesh cleanliness sensor and airhandling equipment |
| CN108827978A (en) * | 2018-08-16 | 2018-11-16 | 东部超导科技（苏州）有限公司 | Superconduction base band surface defects detection system and its detection method |
| CN110455750A (en) * | 2019-08-21 | 2019-11-15 | 京东方科技集团股份有限公司 | Mirror surface defogging method, frost removal for mirror face and Intelligent mirror |
| CN111156932A (en) * | 2020-03-10 | 2020-05-15 | 凌云光技术集团有限责任公司 | Mirror surface material roughness detection device |
| CN111156932B (en) * | 2020-03-10 | 2021-08-27 | 凌云光技术股份有限公司 | Mirror surface material roughness detection device |
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Application publication date: 20120418 |