CN104361116B - Automatic light source adjusting method and system - Google Patents
Automatic light source adjusting method and system Download PDFInfo
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- CN104361116B CN104361116B CN201410719657.3A CN201410719657A CN104361116B CN 104361116 B CN104361116 B CN 104361116B CN 201410719657 A CN201410719657 A CN 201410719657A CN 104361116 B CN104361116 B CN 104361116B
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000005286 illumination Methods 0.000 claims abstract description 6
- 238000013075 data extraction Methods 0.000 claims description 21
- 230000003760 hair shine Effects 0.000 claims description 11
- 238000013500 data storage Methods 0.000 claims description 6
- 239000000284 extract Substances 0.000 claims description 6
- 210000000352 storage cell Anatomy 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 8
- 238000001514 detection method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000011179 visual inspection Methods 0.000 description 3
- 241000208340 Araliaceae Species 0.000 description 2
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 description 2
- 235000008434 ginseng Nutrition 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000004590 computer program Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/50—Information retrieval; Database structures therefor; File system structures therefor of still image data
- G06F16/58—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
- G06F16/583—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually using metadata automatically derived from the content
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/10—Image acquisition
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Abstract
The embodiment of the invention discloses an automatic light source adjusting method, which comprises the following steps: acquiring a photo of the board card in real time; extracting actually measured illumination information data from the picture of the board card acquired in real time; and adjusting the light source according to the actually measured illumination information data and the reference illumination information data. The embodiment of the invention also discloses an automatic light source adjusting system. The embodiment of the invention can greatly improve the recognition efficiency, achieve the aim of automatically adjusting the light source, realize the full automation of the recognition and control process, realize the simple, quick and effective automatic adjustment of the light source and provide a proper light source for the subsequent identification of the board card.
Description
Technical field
The present invention relates to automatic visual inspection field more particularly to a kind of light source automatic adjusting methods.
Background technology
Automatic visual inspection (AOI, Automated Optical Inspection) effectively detects for industrial automation
Method using machine vision as examination criteria technology, is widely used on LCD/TFT, transistor and PCB industry processing procedure,
People's livelihood purposes then may extend to safety system.Automatic visual inspection is representative gimmick common in industrial process, utilizes optics
Mode obtains the surface state of finished product, the flaws such as foreign matter or pattern anomalies is detected with image processing, because be contactless inspection
It looks into, so can be in intermediate engineering supervision semi-finished product.
, it is necessary to which the species of every piece of board is identified by automatic optics inspection technology in board production process.
Important role of the light source in automatic optical checking equipment, the improper identification that can influence board of light source.Thus identifying
, it is necessary to light source be adjusted to the board currently identified, in case the board of the same hereinafter species is identified in journey.But the prior art
In, only by artificially removing adjustment light source, there is no the schemes of adjust automatically light source.
The content of the invention
The problem of being unable to adjust automatically present invention aim to address light source in board identification process proposes a light source certainly
The scheme of dynamic adjustment can realize simple, fast and accurately adjust automatically light source.
In order to achieve the above object, the embodiment of the present invention provides a kind of light source automatic adjusting method, including：
The photo of board is obtained in real time；
Measured light is extracted from the photo of the board obtained in real time and shines information data；
Light source is adjusted according to information data with reference light according to information data according to the measured light.
Further, before the photo of board is obtained in real time, further include：
Obtain the initial photo of the board；
Photo in the initial photo of the board and database is matched to identify the board；
One, which is obtained, according to recognition result refers to photo；
Reference light is extracted from the reference photo of acquisition and shines information data.
Further, the initial photo by the board matches to identify the plate with the photo in database
Fixture body includes：
The initial photo of the board with the photo in database is matched, determines whether the data of board of the same race
It is present in database；
If it has, then the type of the board is identified according to the data of board of the same race；If it has not, it cannot then identify described
The type of board；
It is described to be specifically included according to one reference photo of recognition result selection：
When identifying the type of the board, the photo that a board of the same race is chosen from database is used as with reference to photograph
Piece；
When cannot recognize that the type of the board, choose one from externally input sample board picture as reference
Picture.
Further, shone described according to the measured light according to information data and reference light after information data adjustment light source
It further includes：
Determine whether that the data of board of the same race are present in database；If it is present in data without the data of board of the same race
In storehouse, then by the photo of the board obtained in real time and the measured light extracted according to information data storing to database in case
The identification of follow-up board of the same race uses.
Further, the reference light that extracted from selected reference photo is specifically included according to information data：
It is acquired with reference to photo in select and need the region that adjusts；
It extracts the Lighting information data with reference to the selected region for needing to adjust in photo and is used as and believe with reference to illumination
Cease data；
The measured light of being extracted from the photo of the board obtained in real time is specifically included according to information data：
Obtain the corresponding region corresponding with the region for needing to adjust in the photo of the board；
The Lighting information data for extracting the corresponding region in the photo of the board shine information data as measured light.
Correspondingly, the embodiment of the present invention also provides a kind of light source automatic adjustment system, including：
Live-pictures acquiring unit, for obtaining the photo of the board in real time；
Measured data extraction unit shines Information Number for extracting measured light from the photo of the board obtained in real time
According to；
Light source regulates and controls unit, for adjusting light source according to information data according to information data and reference light according to the measured light.
Further, the light source automatic adjustment system further includes：
Initial photo acquiring unit, for obtaining the initial photo of the board；
Recognition unit, for matching to identify the plate photo in the initial photo of the board and database
Card；
With reference to photo acquiring unit, photo is referred to for obtaining one according to recognition result；
Reference data extraction unit shines information data for extracting reference light from the reference photo of acquisition.
Further, the recognition unit includes judgment sub-unit and identification subelement；
The judgment sub-unit for the initial photo of the board to be matched with the photo in database, judges
The data for whether having board of the same race are present in database；
The identification subelement, for there are the numbers according to board of the same race during the data of board of the same race in the database
According to the type for identifying the board；
It is described to include photo of the same race acquisition subelement and sample photo acquisition subelement with reference to photo acquiring unit；
The photo of the same race obtains subelement, in the database there are during the data of board of the same race from database
It is middle to choose a board photo of the same race as with reference to photo；
The sample photo obtains subelement, and one is chosen during the data of board of the same race for being not present in the database
It opens and is used as from externally input sample board photo with reference to photo.
Further, secondary judging unit and data storage cell are further included；
The secondary judging unit is used in light source regulation and control unit according to the measured light according to information data and reference
After Lighting information data point reuse light source, determine whether that the data of board of the same race are present in database；
The data storage cell is used to judge that the data of no board of the same race are present in number in the secondary judging unit
During according to storehouse, by the photo of the board obtained in real time and the measured light extracted according to information data storing to database in case
The identification of follow-up board of the same race uses.
Further, the reference data extraction unit is selected subelement including adjustment region and is extracted with adjustment region data
Subelement；
The adjustment region select subelement for it is acquired with reference to photo in select and need the region that adjusts；
The adjustment region data extraction subelement refers to the selected region for needing to adjust in photo for extracting
Lighting information data are used as with reference to Lighting information data；
The measured data extraction unit includes corresponding region and obtains subelement and corresponding region data extraction subelement；
The corresponding region obtains subelement for obtaining the region adjusted in the photo of the board with the needs
Corresponding corresponding region；
The corresponding region data extraction subelement is used to extract the light of the corresponding region in the photo of the board
According to information data information data is shone as measured light.
Implement the embodiment of the present invention, have the advantages that：It is same when existing in database by analyzing the picture of board
During the data of kind board, the Direct Recognition board；In the presence of the data for not having board of the same race in database, one can be chosen
From externally input sample board picture, using this sample board picture as reference picture and constantly regulate multichannel controllable lamp
Brightness causes the picture of board and the Lighting information Data Matching of the reference picture, finally by the photograph of the board obtained in real time
Piece and the measured light extracted, in case the identification of follow-up board of the same race uses, subsequently there is phase according to information data storing to database
With board when then without input sample photo, recognition efficiency can be greatly improved, achieve the purpose that adjust automatically light source, identify
With controlling process full automation, simple and quick effectively adjust automatically light source is realized, it is suitable to be provided for the identification of follow-up board
Light source.
Description of the drawings
Fig. 1 is the flow diagram of the first embodiment of light source automatic adjusting method provided by the invention；
Fig. 2 is board detection light source setting principle figure；
Fig. 3 is the flow diagram of the second embodiment of light source automatic adjusting method provided by the invention；
Fig. 4 is the Nogata hum pattern in the second embodiment of light source automatic adjusting method provided by the invention；
Fig. 5 is the flow diagram of the 3rd embodiment of light source automatic adjusting method provided by the invention；
Fig. 6 is the structure diagram of light source automatic adjustment system provided by the invention.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment belongs to the scope of protection of the invention.
It is the flow diagram of the first embodiment of light source automatic adjusting method provided by the invention referring to Fig. 1, this method
Comprise the following steps：
S101 obtains the photo of board in real time；
S102 extracts measured light according to information data from the photo of the board obtained in real time；
S103 adjusts light source with reference light according to information data according to the measured light according to information data.
As shown in Fig. 2, it is board detection light source setting principle figure.In the present embodiment, light source by L1, L2, L3, L4 with
The controllable lamp composition that L5 five is individually controlled, the range of exposures of light source need to cover entire board I.Matched somebody with somebody by five controllable lamps
The adjustment of integrated light source can be realized by closing adjustment.The quantity of controllable lamp and position can all change on demand.
Wherein, in S103, specifically adjust light source and the measured light is caused to shine Information Number according to information data and reference light
According to matching.
Light source automatic adjusting method provided in an embodiment of the present invention, may be used in AOI detection techniques, by analyzing board
Picture, the brightness of constantly regulate multichannel controllable lamp causes the measured light of board to shine information data according to information data and reference light
Match somebody with somebody, can achieve the purpose that adjust automatically light source, identification and control process full automation, realize simple and quick effectively automatic
Light source is adjusted, suitable light source is provided for the identification of follow-up board.
It is the flow diagram of the second embodiment of light source automatic adjusting method provided by the invention referring to Fig. 3.This method
Specifically include following steps：
S201 obtains the initial photo of board；
Photo in the initial photo of the board and database is matched to identify the board by S202；
S203 obtains one according to recognition result and refers to photo；
S204 extracts reference light according to information data from the reference photo of acquisition；
S205 obtains the photo of board in real time；
S206 extracts measured light according to information data from the photo of the board obtained in real time；
S207 adjusts light source with reference light according to information data according to the measured light according to information data.
Wherein, in S202, the initial photo by the board matches to identify with the photo in database
The board specifically includes：
The initial photo of the board with the photo in database is matched, determines whether the data of board of the same race
It is present in database；
If it has, then the type of the board is identified according to the data of board of the same race；If it has not, it cannot then identify described
The type of board；
It is described to be specifically included according to one reference photo of recognition result selection in S203：
When identifying the type of the board, the photo that a board of the same race is chosen from database is used as with reference to photograph
Piece；
When cannot recognize that the type of the board, choose one from externally input sample board picture as reference
Picture.
Specifically, the measured light is obtained according to information data for the photo to the board obtained in real time by equalization
Actual measurement Nogata hum pattern；The reference light is to the acquired reference obtained with reference to photo by equalization according to information data
Nogata hum pattern；Then the adjustment causes the measured light is shone according to information data with the reference light to believe per the brightness of road controllable lamp
Breath Data Matching is specifically to adjust to cause the actual measurement Nogata hum pattern with described with reference to Lighting information per the brightness of road controllable lamp
Figure matching.As shown in figure 4, it is the Nogata hum pattern in the second embodiment of light source automatic adjusting method provided by the invention,
Wherein abscissa is indication range, and ordinate is gray value.
In the second embodiment of the present invention, when in database there are during the data of board of the same race, the Direct Recognition board；When
In the presence of the data for not having board of the same race in database, one can be chosen from externally input sample board picture, it will be this
Sample board picture makees subsequent processing as reference picture, finally by the photo of the board obtained in real time and is extracted
Measured light according to information data storing to database in case the identification of follow-up board of the same race uses, when subsequently having an identical board then without
Input sample photo is needed, recognition efficiency can be greatly improved.
It is the flow diagram of the 3rd embodiment of light source automatic adjusting method provided by the invention referring to Fig. 5.This method
Specifically include following steps：
S301 obtains the initial photo of board；
The initial photo of the board with the photo in database is matched, determines whether board of the same race by S302
Data be present in database；
S303, if the data for having board of the same race are present in database, according to identifying the data of board of the same race
The type of board；
S304 when identifying the type of the board, chooses the photo of a board of the same race as ginseng from database
Examine photo；Enter step S307；
S305 if the data without board of the same race are present in database, cannot identify the type of the board；
S306 when cannot recognize that the type of the board, choosing one and making from externally input sample board picture
For reference picture；
S307, it is acquired with reference to photo in select and need the region that adjusts；
S308, the extraction Lighting information data with reference to the selected region for needing to adjust in photo are used as with reference to light
According to information data；
S309 obtains the photo of the board in real time；
S310 obtains the corresponding region corresponding with the region for needing to adjust in the photo of the board；
S311, the Lighting information data for extracting the corresponding region in the photo of the board are used as actual measurement Lighting information
Data.
S312 adjusts light source with reference light according to information data according to the measured light according to information data；
S313 determines whether that the data of board of the same race are present in database；
S314, if being present in without the data of board of the same race in database, by the photo of the board obtained in real time
And the measured light extracted according to information data storing to database in case the identification of follow-up board of the same race uses.
The advantages of third embodiment of the present invention, is, in the scheme of the first two embodiment, can further obtained
Being selected in the reference photo taken needs the region that adjusts, and accordingly obtains and need to adjust with described in the photo of the board
The corresponding corresponding region in whole region, then subsequent light source adjustment is just only adjusted the subregion, thus can have
Standby more selectivity.Certainly, it is described here need the region that adjusts can be with reference to photo any one regional area or
Whole photo.
It is the structure diagram of light source automatic adjustment system provided by the invention referring to Fig. 6.The embodiment of the present invention also provides
A kind of light source automatic adjustment system, including：
Initial photo acquiring unit 1, for obtaining the initial photo of board；
Recognition unit 2, for matching the photo in the initial photo of the board and database with described in identification
Board；
With reference to photo acquiring unit 3, photo is referred to for choosing one according to recognition result；
Reference data extraction unit 4 shines information data for extracting reference light from the reference photo of selection；
Live-pictures acquiring unit 5, for obtaining the photo of the board in real time；
Measured data extraction unit 6 shines Information Number for extracting measured light from the photo of the board obtained in real time
According to；
Light source regulates and controls unit 7, for adjusting light source according to information data according to information data and reference light according to the measured light.
Further, the recognition unit 2 includes judgment sub-unit 21 and identification subelement 22；
The judgment sub-unit 21 for the initial photo of the board to be matched with the photo in database, is sentenced
The disconnected data for whether having board of the same race are present in database；
It is described identification subelement 22, in the database there are during the data of board of the same race according to board of the same race
Data identify the type of the board；
It is described to include photo of the same race acquisition subelement 31 and sample photo acquisition subelement with reference to photo acquiring unit 3
32；
The photo of the same race obtains subelement 31, in the database there are during the data of board of the same race from data
A board photo of the same race is chosen in storehouse to be used as with reference to photo；
The sample photo obtains subelement 32, is chosen for being not present in the database during the data of board of the same race
One is used as from externally input sample board photo with reference to photo.
Further, secondary judging unit 8 and data storage cell 9 are further included；
The secondary judging unit 8 is used in light source regulation and control unit 7 according to the measured light according to information data and ginseng
After examining Lighting information data point reuse light source, determine whether that the data of board of the same race are present in database；
The data storage cell 9 is used to judge that the data of no board of the same race are present in the secondary judging unit 8
During database, by the photo of the board obtained in real time and the measured light extracted according to information data storing to database with
The identification of standby follow-up board of the same race uses.
Further, the reference data extraction unit 4 selectes subelement 41 and adjustment region data including adjustment region
Extract subelement 42；
The adjustment region select subelement 41 for it is acquired with reference to photo in select and need the region that adjusts；
The adjustment region data extraction subelement 42 refers to the selected region for needing to adjust in photo for extracting
Lighting information data be used as with reference to Lighting information data；
The measured data extraction unit 6 includes corresponding region and obtains subelement 61 and corresponding region data extraction subelement
62；
The corresponding region obtains subelement 61 for obtaining the area adjusted in the photo of the board with the needs
The corresponding corresponding region in domain；
The corresponding region data extraction subelement 62 is used to extract the corresponding region in the photo of the board
Lighting information data shine information data as measured light.
Compared with the prior art, the beneficial effects of the present invention are：By analyzing the picture of board, when existing in database
During the data of board of the same race, the Direct Recognition board；In the presence of the data for not having board of the same race in database, one can be chosen
It opens from externally input sample board picture, using this sample board picture as reference picture and constantly regulate multichannel controllable lamp
Brightness cause the picture of board and the Lighting information Data Matching of the reference picture, finally by the board obtained in real time
Photo and the measured light extracted, in case the identification of follow-up board of the same race uses, subsequently have according to information data storing to database
Then without input sample photo during identical board, recognition efficiency can be greatly improved, achievees the purpose that adjust automatically light source, known
Not with controlling process full automation, simple and quick effectively adjust automatically light source is realized, it is suitable to be provided for the identification of follow-up board
Light source.
One of ordinary skill in the art will appreciate that realizing all or part of flow in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the program can be stored in a computer read/write memory medium
In, the program is upon execution, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic
Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (RandomAccess
Memory, RAM) etc..
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (6)
1. a kind of light source automatic adjusting method, which is characterized in that including：
The photo of board is obtained in real time；
Measured light is extracted from the photo of the board obtained in real time and shines information data；
Light source is adjusted according to information data with reference light according to information data according to the measured light；
Before the photo of board is obtained in real time, further include：
Obtain the initial photo of the board；
Photo in the initial photo of the board and database is matched to identify the board；
One, which is obtained, according to recognition result refers to photo；
Reference light is extracted from the reference photo of acquisition and shines information data；
The initial photo by the board matches to identify that the board is specifically included with the photo in database：
The initial photo of the board with the photo in database is matched, determines whether that the data of board of the same race exist
In database；
If it has, then the type of the board is identified according to the data of board of the same race；If it has not, it cannot then identify the board
Type；
It is described to be specifically included according to one reference photo of recognition result selection：
When identifying the type of the board, the photo that a board of the same race is chosen from database is used as with reference to photo；
When cannot recognize that the type of the board, choosing one and being used as from externally input sample board photo with reference to photograph
Piece.
2. light source automatic adjusting method as described in claim 1, which is characterized in that described according to the actual measurement Lighting information
Data further include afterwards with reference light according to information data adjustment light source：
Determine whether that the data of board of the same race are present in database；If it is present in database without the data of board of the same race
In, then by the photo of the board obtained in real time and the measured light extracted according to information data storing to database in case after
The identification for continuing board of the same race uses.
3. light source automatic adjusting method as described in claim 1, which is characterized in that described to be carried from acquired reference photo
Reference light is taken to be specifically included according to information data：
It is acquired with reference to photo in select and need the region that adjusts；
The Lighting information data with reference to the selected region for needing to adjust in photo are extracted to be used as with reference to Lighting information number
According to；
The measured light of being extracted from the photo of the board obtained in real time is specifically included according to information data：
Obtain the corresponding region corresponding with the region for needing to adjust in the photo of the board；
The Lighting information data for extracting the corresponding region in the photo of the board shine information data as measured light.
4. a kind of light source automatic adjustment system, which is characterized in that including：
Live-pictures acquiring unit, for obtaining the photo of board in real time；
Measured data extraction unit shines information data for extracting measured light from the photo of the board obtained in real time；
Light source regulates and controls unit, for adjusting light source according to information data according to information data and reference light according to the measured light；
The light source automatic adjustment system further includes：
Initial photo acquiring unit, for obtaining the initial photo of the board；
Recognition unit, for matching to identify the board photo in the initial photo of the board and database；
With reference to photo acquiring unit, photo is referred to for obtaining one according to recognition result；
Reference data extraction unit shines information data for extracting reference light from the reference photo of acquisition；
The recognition unit includes judgment sub-unit and identification subelement；
The judgment sub-unit for the initial photo of the board to be matched with the photo in database, judges whether
The data for having board of the same race are present in database；
The identification subelement, for there are known during the data of board of the same race according to the data of board of the same race in the database
The type of not described board；
It is described to include photo of the same race acquisition subelement and sample photo acquisition subelement with reference to photo acquiring unit；
The photo of the same race obtains subelement, for there are selected during the data of board of the same race from database in the database
A board photo of the same race is taken to be used as with reference to photo；
The sample photo obtains subelement, for be not present in the database during the data of board of the same race choose one from
Externally input sample board photo is used as with reference to photo.
5. light source automatic adjustment system as claimed in claim 4, which is characterized in that further include secondary judging unit and data
Storage unit；
The secondary judging unit is used to be shone according to information data and reference light according to the measured light in light source regulation and control unit
After information data adjustment light source, determine whether that the data of board of the same race are present in database；
The data storage cell is used to judge that the data of no board of the same race are present in database in the secondary judging unit
When, by the photo of the board obtained in real time and the measured light extracted according to information data storing to database in case follow-up
The identification of board of the same race uses.
6. light source automatic adjustment system as claimed in claim 4, which is characterized in that the reference data extraction unit includes adjusting
It selectes subelement and extracts subelement with adjustment region data in main plot domain；
The adjustment region select subelement for it is acquired with reference to photo in select and need the region that adjusts；
The adjustment region data extraction subelement refers to the illumination in the selected region for needing to adjust in photo for extracting
Information data is used as with reference to Lighting information data；
The measured data extraction unit includes corresponding region and obtains subelement and corresponding region data extraction subelement；
It is corresponding with the region for needing to adjust in the photo of the board for obtaining that the corresponding region obtains subelement
Corresponding region；
The corresponding region data extraction subelement is used to extract the illumination letter of the corresponding region in the photo of the board
It ceases data and shines information data as measured light.
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| CN201410719657.3A CN104361116B (en) | 2014-11-28 | 2014-11-28 | Automatic light source adjusting method and system |
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|---|---|---|---|
| CN201410719657.3A CN104361116B (en) | 2014-11-28 | 2014-11-28 | Automatic light source adjusting method and system |
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| CN108414531A (en) * | 2018-04-18 | 2018-08-17 | 常州市安视智能科技有限公司 | A kind of fexible film defect detecting device and its detection method based on machine vision |
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