CN208366821U - The color camera RGB image of a kind of group of light-combined illuminating merges vision inspection apparatus - Google Patents

The color camera RGB image of a kind of group of light-combined illuminating merges vision inspection apparatus Download PDF

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Publication number
CN208366821U
CN208366821U CN201820739327.4U CN201820739327U CN208366821U CN 208366821 U CN208366821 U CN 208366821U CN 201820739327 U CN201820739327 U CN 201820739327U CN 208366821 U CN208366821 U CN 208366821U
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light
determinand
parallel strip
light source
source
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刘源泂
雷娇
王兴东
刘钊
周同聚
张金涛
高颖
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Wuhan University of Science and Engineering WUSE
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Wuhan University of Science and Engineering WUSE
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Abstract

The utility model relates to the color camera RGB images of a kind of group of light-combined illuminating to merge vision inspection apparatus, including a high-precision color camera, one coaxial light source, four parallel strip light sources, axis light is treated survey object surface with parallel strip light formation group light-combined illuminating system and is illuminated, wherein coaxial light source is located at right above determinand, immediately below color camera, four parallel strip light sources are located at determinand upper side at a certain angle, axis light cooperates with parallel strip light using red, it is green, the light of blue three-color illuminates determinand, it is taken pictures by color camera, send the image of acquisition to computer, computer extracts the image in tri- channels RGB respectively, each channel image is respectively processed and is identified defect, fusion detects determinand surface stain, scratch, it weighs wounded, the defects of scuffing.

Description

The color camera RGB image of a kind of group of light-combined illuminating merges vision inspection apparatus
Technical field
The utility model belongs to defect recognition field in machine vision detection device, and in particular to a kind of group of light-combined illuminating Color camera RGB image merges vision inspection apparatus.
Background technique
With the improvement of living standards, people during selective purchase other than the service performance for valuing commodity, To the presentation qualities of commodity, higher requirements are also raised, such as phone housing, bottle cap, caddy surface quality directly affect people Choose.
Due to various factors, the surfaces such as phone housing, bottle cap, caddy are inevitably generated black in the process of production and processing Point such as scratch, weighs, scratches wounded at the various defects, thus have in industrial processes to identify from large-tonnage product it is various not Defect together rejects substandard product.
Currently, had many methods for determinand surface defects detection by taking phone housing surface defects detection as an example, Their detection device, imaging optical path are different, such as the detection device and method of Publication No. CN104914109A, machinery dress Complexity is set, such as the detection device and method of Publication No. CN102218406A, is taken pictures acquisition using group light-combined illuminating and multistation Image carries out different defect processing identifications, has the characteristics that high-precision, stable, but imaging device complexity, process of taking pictures process are more.
The utility model combination color camera image-forming principle, using coaxial light source and parallel strip light combined light source illumination system System, illuminates determinand with the light source of three kinds of colors of red, green, blue, obtains image by high-precision color camera, passes through calculating Machine extracts image from RGB triple channel, carries out graphics process, identification, judges defect, can quickly, it is simple, accurately to determinand Surface defect is detected.
Utility model content
The utility model waits the sliding surface defect inspection of object test light to mobile phone shell, bottle cap, caddy to improve in production process The speed and precision of survey simplifies imaging system, proposes the color camera RGB image fusion vision-based detection of a kind of group of light-combined illuminating Device can effectively carry out determinand surface defect using color camera RGB triple channel imaging characteristics and image processing techniques Identification, detection.
The utility model devises a kind of detection device, including determinand, one to realize determinand surface defects detection A high-precision color camera, a coaxial light source, four parallel strip light sources, coaxial light source are combined with the formation of parallel strip light source Lighting system illuminates determinand surface, and entire detection device is in dark enclosure space, wherein
In the group light-combined illuminating system, coaxial light source is located at the surface of determinand, is located at high-precision color camera Underface, four parallel strip light are located at the front, rear, left and right upper side of determinand at a certain angle respectively;
Four parallel strip light sources in the described group light-combined illuminating system, forward and backward parallel strip source symmetric arrangement and Lighting color is identical, and horizontal plane is at angle α illuminates to determinand;Left and right parallel strip source symmetric arrangement and illumination Color is identical, illuminates with the at angle β degree of horizontal plane to determinand, the value range of α, β are 10 °~45 °;
In the group light-combined illuminating system, it is the feux rouges of 635~645nm as lighting source that coaxial light source, which uses wavelength, Determinand is illuminated, forward and backward parallel strip light source uses wavelength to treat for the green light of 520~530nm as lighting source Survey object illuminated, left and right parallel strip light source use wavelength for the blue light of 460~475nm as lighting source to determinand It is illuminated, organizes three kinds of illumination face of coaxial light source, front and back parallel strip light source and left and right strip light in light-combined illuminating system Color can be arbitrarily exchanged with each other.
The color camera RGB image fusion vision inspection apparatus of a kind of group of light-combined illuminating carries out defect inspection to determinand surface The method of survey, its step are as follows:
Step 1: being illuminated using group light-combined illuminating system to band detectable substance surface, coaxial light source and parallel strip light Source cooperation, while surface to be detected is illuminated with the light of three kinds of colors of red, green, blue;
Step 2: taking pictures using high-precision color camera to determinand surface, the image of acquisition is sent to calculating Machine;
Step 3: computer extracts the image in tri- channels RGB respectively, each channel image is respectively processed and is identified The defects of defect, fusion detects determinand surface stain, scratch, weighs wounded, scratches.
The utility model has the advantages that structure of the detecting device is simple, use cost is reduced, is only taken pictures with a camera lens, simplifies operation, According to color camera RGB triple channel difference imaging characteristics, illuminated using the combination lighting mode of three kinds of illumination of RGB, together What the illumination right above the determinand of axis light source can effectively obtain determinand surface the apparent defect of stereoscopic features such as weighs wounded, uses Forward and backward parallel strip light source illumination can effectively obtain left and right trend scratch the defects of, the left and right parallel strip light of use Source lighting can effectively obtain the defects of scratch that front and back is moved towards.Last computer extracts the image in tri- channels RGB, R respectively Channel corresponds to the image of feux rouges optical path, and the channel G corresponds to the image of green light optical path, and channel B corresponds to the image of blue light paths, Ge Getong Different defect emphasis is presented in road, each channel image is respectively processed and is identified defect, convergence analysis can be effectively accurate Ground such as detects the stain on determinand surface, scratch, weighs wounded, scratches at the various different defects.
Detailed description of the invention
In order to illustrate more clearly of the technical scheme in the embodiment of the utility model, will be used in embodiment technical description below To attached drawing simply described:
Fig. 1 is the utility model detection device flow diagram
Fig. 2 is the utility model structure of the detecting device schematic diagram
Fig. 3 is parallel strip light source scheme of installation in left and right in detection device
Fig. 4 is front and back parallel strip light source scheme of installation in detection device
Detailed description of the invention is as follows:
1, high-precision color camera;2, coaxial light source;3, preceding bar shaped source of parallel light;4, left parallel strip light source;5, rear item Shape source of parallel light;6, right parallel strip light source;7, determinand;
A, light-emitting surface;B, parallel strip source light;C, coaxial light source light;A, determinand length;B, determinand width.
Specific embodiment
The utility model is further elaborated in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, for the structure of the detecting device schematic diagram for determinand defects detection, wherein 1 is colored for high-precision Camera, 2 be coaxial light source, and 3,4,5,6 be parallel strip light source, and 7 be determinand, and whole system is in dark closing when detection In space, in the group light-combined illuminating system, parallel strip light source 3,4,5,6 be located at determinand before, left, rear, right side Top, coaxial light source 2 are located at right above determinand.
As shown in figure 3, to see that left and right parallel strip light source and coaxial light source installation are illustrated in detection device from front to back Figure, parallel strip light source 4,6 with horizontal plane is at angle α illuminates to determinand, the value range of α is 10 °~45 °.
As shown in figure 4, to see that forward and backward parallel strip light source and coaxial light source installation are illustrated in detection device from left to right Figure, parallel strip light source 3,5 illuminate determinand with the at angle β degree of horizontal plane, and the value range of β is 10 °~45 °.
Illustrate the detection device and method of the utility model by taking phone housing surface defects detection as an example below:
The determinand is a regular handset shell;
In the group light-combined illuminating system, it is the feux rouges of 635~645nm as illumination that coaxial light source 2, which uses wavelength, Light source illuminates mobile phone shell, and light-emitting surface size is 80mm × 150mm.Forward and backward parallel strip light source 3,5 use wavelength for The green light of 520~530nm illuminates mobile phone shell as lighting source, and light-emitting surface size is 65mm × 150mm, forward and backward item Shape source of parallel light and horizontal plane illuminate phone housing at α=30 °.Left and right strip source 4,6 use wavelength for 460~ The blue light of 475nm illuminates mobile phone shell as lighting source, and light-emitting surface size is 80mm × 130mm, strip source and water Plane illuminates phone housing at β=30 °.
Phone housing to be detected is placed in detection platform, using combination of the above lighting system simultaneously to mobile phone Shell is illuminated, and is taken pictures with high-precision color camera, obtains image, image is passed to computer (not shown), is calculated Machine extracts the image in tri- channels RGB respectively, and the channel R corresponds to the image of feux rouges optical path, and the channel G corresponds to the image of green light optical path, B Channel corresponds to the image of blue light paths, each channel image is respectively processed and is identified defect, convergence analysis, in conjunction with mobile phone outside Shell production requirement comparison determines, identification defect, so far completes defects detection.
Preferably, coaxial light source, front and back parallel strip light source and left and right parallel strip light source in light-combined illuminating system are organized Three kinds of lighting colors can arbitrarily be exchanged with each other, i.e., coaxial light source is also possible to blue light or green light, left and right parallel strip light source It is also possible to feux rouges or green light, front and back parallel strip light source is also possible to feux rouges or blue light, as long as coaxial light source, front and back bar shaped Source of parallel light and the color of left and right parallel strip light source be not identical.
The above descriptions are merely exemplary embodiments of the present utility model, the model being not intended to limit the utility model Enclose, the equivalent variations that any those skilled in the art is made under the premise of not departing from the utility model and principle with repair Change, all should belong to the protection range of the utility model.

Claims (1)

1. the color camera RGB image of a kind of group of light-combined illuminating merges vision inspection apparatus, including determinand, a high-precision coloured silk Form and aspect machine, a coaxial light source, four parallel strip light sources, coaxial light source and parallel strip light source formation group light-combined illuminating system Determinand surface is illuminated, entire detection device is in dark enclosure space, which is characterized in that
In the group light-combined illuminating system, coaxial light source is located at the surface of determinand, just positioned at high-precision color camera Lower section, four parallel strip light are located at the front, rear, left and right upper side of determinand at a certain angle respectively;
Four parallel strip light sources in the group light-combined illuminating system, forward and backward parallel strip source symmetric arrangement and illumination Color is identical, and horizontal plane is at angle α illuminates to determinand;Left and right parallel strip source symmetric arrangement and lighting color It is identical, determinand is illuminated with horizontal plane at angle β degree, the value range of α, β are 10 °~45 °;
In the group light-combined illuminating system, coaxial light source uses wavelength to treat for the feux rouges of 635~645nm as lighting source Survey object illuminated, forward and backward parallel strip light source use wavelength for the green light of 520~530nm as lighting source to determinand It is illuminated, left and right parallel strip light source uses wavelength to carry out as lighting source to determinand for the blue light of 460~475nm Three kinds of illumination of coaxial light source, front and back parallel strip light source and left and right parallel strip light source in light-combined illuminating system are organized in illumination Color can be arbitrarily exchanged with each other.
CN201820739327.4U 2018-05-15 2018-05-15 The color camera RGB image of a kind of group of light-combined illuminating merges vision inspection apparatus Expired - Fee Related CN208366821U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108956462A (en) * 2018-05-15 2018-12-07 武汉科技大学 A kind of color camera RGB image fusion vision detection system and detection method
CN110208284A (en) * 2019-05-27 2019-09-06 武汉中导光电设备有限公司 A kind of method and system of multichannel defect combined analysis
CN113031368A (en) * 2021-03-10 2021-06-25 苏州天准科技股份有限公司 Integrated high-uniformity light source and imaging device adopting same
CN114112903A (en) * 2021-02-01 2022-03-01 苏州威华智能装备有限公司 Method and device for detecting surface defects of photovoltaic cell and storage medium

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108956462A (en) * 2018-05-15 2018-12-07 武汉科技大学 A kind of color camera RGB image fusion vision detection system and detection method
CN110208284A (en) * 2019-05-27 2019-09-06 武汉中导光电设备有限公司 A kind of method and system of multichannel defect combined analysis
CN110208284B (en) * 2019-05-27 2021-09-17 武汉中导光电设备有限公司 Method and system for multi-channel defect merging analysis
CN114112903A (en) * 2021-02-01 2022-03-01 苏州威华智能装备有限公司 Method and device for detecting surface defects of photovoltaic cell and storage medium
CN113031368A (en) * 2021-03-10 2021-06-25 苏州天准科技股份有限公司 Integrated high-uniformity light source and imaging device adopting same

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