CN211263236U - Glass defect image acquisition equipment - Google Patents
Glass defect image acquisition equipment Download PDFInfo
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- CN211263236U CN211263236U CN201922056513.5U CN201922056513U CN211263236U CN 211263236 U CN211263236 U CN 211263236U CN 201922056513 U CN201922056513 U CN 201922056513U CN 211263236 U CN211263236 U CN 211263236U
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Abstract
The utility model provides a glass defect image acquisition equipment, includes the stripe light source, is used for bearing the weight of the carrier of glass that awaits measuring, gathers the image collector of the image that forms behind the glass that awaits measuring of light transmission emitted of stripe light source and drives the first actuating mechanism who bears the weight of and rotate between the discrete berthage position. By adopting the equipment, the glass with smaller size can be detected efficiently.
Description
Technical Field
The application relates to the field of glass detection, in particular to glass defect image acquisition equipment.
Background
Chinese patent application CN103344651A published in 2013, 10, 9 and discloses a method for acquiring an image formed by a strip light source penetrating through glass, comparing the acquired image with an image of defect-free glass, and acquiring a glass defect according to a phase difference. The intrinsic law of defect visualization in this method is unknown, but it has been confirmed by experiments that it is really feasible. However, this method is only suitable for detecting flat glass which is continuous in the length direction, but not suitable for detecting glass with small size, especially mobile phone glass with curved surface, and the method has the defect of high omission ratio of directional defect.
SUMMERY OF THE UTILITY MODEL
The present application is directed to overcoming the above-mentioned drawbacks or problems in the background art, and providing a glass defect image capturing apparatus capable of efficiently detecting a glass having a small size, and further capable of reducing a missing rate of directional defects.
In order to achieve the purpose, the following technical scheme is adopted:
the first technical scheme relates to a glass defect image acquisition equipment, it includes: a stripe light source that emits light of alternating light and dark; the bearing piece bears a plurality of pieces of glass to be tested and is provided with a plurality of through holes, and the glass to be tested is arranged corresponding to the through holes; the image collector is used for collecting an image formed by transmitting light emitted by the stripe light source through the glass to be detected; the first driving mechanism drives the bearing piece to move among a plurality of discontinuous parking positions; when the light source is in the parking position, the corresponding through hole is positioned between the bar-shaped light source and the image collector.
Based on the first technical scheme, the device is also provided with a second technical scheme, wherein the image collector comprises a lens for imaging and a camera for collecting images.
Based on first technical scheme, still be equipped with the third technical scheme, wherein, carrier be equipped with a plurality of with the pit of awaiting measuring glass shape looks adaptation, the through-hole be located the bottom of pit.
Based on first technical scheme, still be equipped with the fourth technical scheme, wherein, hold carrier still be equipped with and be located the peripheral anchor clamps of each through-hole, anchor clamps centre gripping glass side to be measured, and make glass's to be measured projection is located in the through-hole.
Based on any one of the first to fourth technical solutions, a fifth technical solution is further provided, wherein the bearing member is a carrier, the first driving mechanism is a first motor, and the first motor drives the carrier to rotate along a first rotating shaft parallel to the optical axis of the image collector; the through holes are distributed circumferentially relative to the first rotating shaft.
On the basis of any one of the first to third technical schemes, a sixth technical scheme is further provided, wherein the bearing piece is a belt, and the first driving mechanism comprises a second motor, a driving wheel and a driven wheel; the belt is tensioned on the driving wheel and the driven wheel; the second motor drives the driving wheel to rotate around a second rotating shaft perpendicular to the optical axis of the image collector; the through holes are distributed along the length direction of the belt.
A seventh technical means is provided based on any one of the first to fourth technical means, wherein the apparatus further comprises a second driving mechanism, and the second driving mechanism drives the stripe light source to rotate between the discontinuous irradiation positions relative to the bearing member when the bearing member is parked at the parking position; the changing directions of the light emitted by the stripe light source at each irradiation position intersect with each other.
Based on the seventh technical scheme, an eighth technical scheme is further provided, wherein the second driving mechanism comprises a third motor, and the third motor drives the stripe light source to rotate around a third rotating shaft coinciding with the optical axis of the image collector.
Compared with the prior art, the scheme has the following beneficial effects:
in the first technical scheme, the first driving mechanism drives the bearing piece to move among a plurality of discontinuous parking positions, so that the image collector can discontinuously collect images of the glass to be detected borne by the bearing piece, and the discontinuous small-size glass in the length direction can be detected. And because the carrier moves among a plurality of discontinuous parking positions, therefore, the image acquisition efficiency can be improved, the equipment can continuously operate intermittently, namely, the glass to be detected positioned at different positions can be placed and taken down during parking, or the images of a plurality of glass to be detected can be acquired at one time, so the acquisition efficiency is higher.
In the third technical scheme, the bearing part is provided with a concave pit matched with the shape of the glass to be detected, so that the positioning of the glass to be detected is facilitated, the spatial position of the glass to be detected is fixed, and the segmentation processing on different areas (such as a plane area and a curved surface area) in the future is facilitated.
In the fourth technical scheme, the bearing part is provided with the clamp at the periphery of the through hole, so that the projection of the glass to be measured is completely positioned in the through hole, and the image acquisition of the whole area of the glass to be measured is facilitated.
In the fifth technical scheme, the rotating disc type bearing part is adopted, so that better rigidity can be obtained, and particularly, the placing and removing work station can be set as one work station.
In the sixth technical scheme, a belt type bearing part is adopted, and stations for placing and taking down the glass to be detected are generally positioned at two ends of the bearing part, so that continuous collection is facilitated.
Aiming at the defect omission condition in the prior art, the applicant finds a rule that stripe light penetrates through glass to be detected to form defect imaging in an image, namely, along the light and shade change direction, the glass defect is easier to image, namely, a pixel strip is taken from the glass defect along the light and shade change direction and is more intense in gray value change than the situation that the pixel strip is taken from the glass defect perpendicular to the light and shade change direction, and the position of the glass defect is more intense than the surrounding pixels. The rule is firstly based on taking a narrow pixel strip as a main analysis object, and secondly, the rule can be discovered based on the analysis of the change of the gray value of the position of the defect in the pixel strip.
The seventh technical solution is based on the above natural law which is not disclosed by the prior art and is discovered by the applicant. In the seventh technical scheme, the strip light source is rotated relative to the bearing member stopped at the stopping position by a key technical means, so that the strip light source irradiates the glass to be detected in different brightness change directions, and even if some directional glass defects (such as scratches) are difficult to develop in one brightness change direction, the defects are developed after the brightness change direction is changed, and the defect omission ratio is reduced.
Drawings
In order to more clearly illustrate the technical solution of the embodiments, the drawings needed to be used are briefly described as follows:
FIG. 1 is a schematic structural diagram according to a first embodiment;
FIG. 2 is a schematic diagram illustrating a relationship between a stripe light source and a glass to be measured when the stripe light source is at a first irradiation position according to the first embodiment;
FIG. 3 is a schematic diagram illustrating a relationship between the fringe light source and the glass to be measured when the fringe light source is at the second irradiation position in the first embodiment;
FIG. 4 is a diagram of a portion of an image with a fringe light source in a first illumination position according to an embodiment;
FIG. 5 is an enlarged view of the defect location of FIG. 4;
FIG. 6 is a diagram illustrating a portion of an image with a fringe light source in a second illumination position according to a first embodiment;
FIG. 7 is an enlarged view of the defect location of FIG. 6;
FIG. 8 is a schematic structural view of the second embodiment;
fig. 9 is a schematic structural diagram of the third embodiment.
Description of the main reference numerals:
a stripe light source 1; a carrier 2; a through hole 21; a clamp 22; an image collector 3; a lens 31; a camera 32; a first drive mechanism 4; a first motor 41; a drive wheel 42; a driven pulley 43; a second drive mechanism 5; a third motor 51; the glass 6 to be measured.
Detailed Description
In the claims and specification, unless otherwise specified the terms "first", "second" or "third", etc., are used to distinguish between different items and are not used to describe a particular order.
In the claims and specification, unless otherwise specified, the terms "central," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," "counterclockwise," and the like are used in the orientation and positional relationship indicated in the drawings and are used for ease of description only and do not imply that the referenced device or element must have a particular orientation or be constructed and operated in a particular orientation.
In the claims and the specification, unless otherwise defined, the terms "fixedly" or "fixedly connected" are to be understood in a broad sense as meaning any connection which is not in a relative rotational or translational relationship, i.e. including non-detachably fixed connection, integrally connected and fixedly connected by other means or elements.
In the claims and specification, unless otherwise defined, the terms "comprising", "having" and variations thereof mean "including but not limited to".
The technical solution in the embodiments will be clearly and completely described below with reference to the accompanying drawings.
Example one
Referring to fig. 1, fig. 1 shows the structure of the first embodiment. As shown in fig. 1, the glass defect image capturing apparatus includes a stripe light source 1, a carrier 2, an image capturing device 3, a first driving mechanism 4, and a second driving mechanism 5.
Wherein the content of the first and second substances,
the stripe light source 1 includes a common light source and a grating disposed on a light emitting surface of the common light source so that the stripe light source 1 emits light of alternating light and dark. In the first embodiment, the stripe light source 1 emits light upward.
The bearing part 2 is used for bearing the glass 6 to be tested, in the first embodiment, the bearing part 2 is a turntable, the turntable is horizontally arranged, a plurality of pits matched with the glass 6 to be tested in shape are formed in the turntable along the circumferential direction, through holes 21 are formed in the bottoms of the pits, and the glass 6 to be tested is arranged in the pits and corresponds to the through holes. The arrangement is beneficial to positioning of the glass 6 to be measured, and the space position of the glass 6 to be measured is fixed, so that the next step of dividing different areas (such as a plane area and a curved area) in image processing is facilitated.
The image collector 3 is used for collecting an image formed by the light emitted by the stripe light source 1 after transmitting the glass 6 to be measured. In the first embodiment, the image collector 3 is located above the glass 4 to be measured, and includes a lens 31 for imaging and a camera 32 for collecting images, where the lens 31 faces the glass 4 to be measured, and the camera 32 is located above the lens 31.
The first driving mechanism 4 is a first motor 41 in the first embodiment, the turntable is fixedly connected to an output end of the first motor 51, and the first motor 51 drives the turntable to rotate along a first rotating shaft parallel to an optical axis of the image collector and stop at a plurality of discontinuous stopping positions. Pits and through holes 21 on the turntable are circumferentially distributed relative to the first rotating shaft, and when the turntable is in a parking position, the corresponding through holes 21 are positioned between the strip-shaped light source 1 and the image collector 3.
The second drive mechanism 5 includes a third motor 51 in the first embodiment. When the turntable stops at the stop position, the third motor 51 drives the bar light source 1 to rotate around a third rotating shaft which coincides with the optical axis of the image collector 3 and stops at the discontinuous irradiation position. The directions of change between bright and dark light emitted from the stripe light sources 1 at the respective irradiation positions intersect with each other. In one embodiment, at least two irradiation positions are provided. At the first irradiation position, the relation between the glass 6 to be measured and the strip light source 1 is shown in fig. 2; and in the second illumination position, the relation between the glass 6 to be measured and the strip light source 1 is shown in fig. 3.
Fig. 4 also shows a portion of an image of a defective glass 6 under test, which was acquired with the strip light source 1 in the first illumination position. Fig. 5 is an enlarged view of fig. 4 at the location of the defect, and it can be seen that the defect is clearly shown in fig. 5. While figure 6 shows a portion of the image of the same glass 6 under test acquired with the striped light source 1 in the second illumination position. Fig. 7 is an enlarged view of fig. 6 at the defective position. We can see that the defect is very insignificant in the image at this point and can even be easily ignored.
Therefore, it is possible to verify a rule that the streak light is transmitted through the glass 6 to be measured to form an image of the defect, that is, along the direction of the change in brightness, the glass defect is easier to be visualized, that is, the glass defect takes one pixel strip along the direction of the change in brightness, and the gray value change is more severe than that of the glass defect which takes one pixel strip perpendicular to the direction of the change in brightness, and is located at a position where the glass defect is located compared with surrounding pixels.
By adopting the method of rotating the stripe light source 1, the stripe light source can irradiate the glass to be detected in different brightness change directions, so that even if some directional glass defects (such as scratches) are difficult to develop in one brightness change direction, the directional glass defects can be developed after the brightness change direction is changed, and the defect omission ratio is reduced.
In the first embodiment, miniature glass including curved surface glass can arrange the pit in and gather the image, simultaneously, owing to possess a plurality of pits and through-hole 21's carousel to make and hold carrier 2 and move between a plurality of discrete berth positions, consequently can improve image acquisition efficiency, equipment itself can intermittent type formula continuous operation, can utilize during berth place and take off the glass 6 that awaits measuring that is located different positions, perhaps can once gather the image of a plurality of glass 6 that await measuring, thereby improved collection efficiency.
Example two
Please refer to fig. 8 for the structure of the second embodiment. As shown in fig. 8, the main difference between the second embodiment and the first embodiment is that the turntable is not provided with a pit, but is directly provided with a plurality of through holes 21, and the through holes 21 are also distributed along the circumferential direction of the first rotating shaft. And the periphery of each through hole is also provided with a clamp 22, the clamp 22 is used for clamping the side edge of the glass 6 to be measured, and the projection of the glass 6 to be measured is positioned in the through hole 21. The main purpose of this arrangement is to facilitate image acquisition of the entire area of the glass to be measured.
EXAMPLE III
Please refer to fig. 9 for the structure of the third embodiment. As shown in fig. 9, the main difference between the third embodiment and the first embodiment is that the carrier 2 is changed into a belt, and the belt is tensioned on a driving pulley 42 and a driven pulley 43 of the first driving mechanism 4. The driving wheel 42 is driven by a second motor (not shown in the figure), and the second motor drives the driving wheel to rotate (i.e. horizontally) around a second rotating shaft perpendicular to the optical axis of the image collector 3; and the through holes 21 are distributed along the length direction of the belt. In this embodiment, the periphery of the through hole is further provided with a protrusion (a black dot in the figure) which has the same function as the concave pit and is also used for positioning the glass 6 to be measured. A further difference between the third embodiment and the first embodiment is that the second drive mechanism 5 is eliminated. The carrier 2 adopts the belt, and the station of placing and taking off the glass that awaits measuring is generally located the both ends that carry carrier 2, and one end is placed, and the other end is taken off, and it is for embodiment one, more be favorable to continuous collection.
The description of the above specification and examples is intended to be illustrative of the scope of the present application and is not intended to be limiting.
Claims (8)
1. A glass defect image capture device, comprising:
a stripe light source that emits light of alternating light and dark;
the bearing piece bears a plurality of pieces of glass to be tested and is provided with a plurality of through holes, and the glass to be tested is arranged corresponding to the through holes;
the image collector is used for collecting an image formed by transmitting light emitted by the stripe light source through the glass to be detected; and
the first driving mechanism drives the bearing piece to move among a plurality of discontinuous parking positions; when the light source is in the parking position, the corresponding through hole is positioned between the bar-shaped light source and the image collector.
2. The glass defect image capturing apparatus of claim 1, wherein said image capturing device comprises a lens for imaging and a camera for capturing images.
3. The glass defect image collecting device as claimed in claim 1, wherein said carrier has a plurality of recesses adapted to the shape of the glass to be measured, and said through holes are formed at the bottom of said recesses.
4. A glass defect image capturing device as claimed in claim 1, wherein said carrier further comprises clamps around each through hole, said clamps clamping the sides of said glass to be measured and positioning the projection of said glass to be measured in said through hole.
5. The glass defect image acquisition device as defined in any one of claims 1 to 4, wherein the bearing member is a turntable, the first driving mechanism is a first motor, and the first motor drives the turntable to rotate along a first rotating shaft parallel to the optical axis of the image acquisition device; the through holes are distributed circumferentially relative to the first rotating shaft.
6. A glass defect image capturing apparatus as claimed in any one of claims 1 to 3, wherein said carrier is a belt, and said first driving mechanism comprises a second motor, a driving pulley and a driven pulley; the belt is tensioned on the driving wheel and the driven wheel; the second motor drives the driving wheel to rotate around a second rotating shaft perpendicular to the optical axis of the image collector; the through holes are distributed along the length direction of the belt.
7. The glass defect image capturing device of any of claims 1 to 4, further comprising a second drive mechanism, wherein the second drive mechanism drives the strip light source to rotate between discrete illumination positions relative to the carrier when the carrier is at the rest position; the changing directions of the light emitted by the stripe light source at each irradiation position intersect with each other.
8. The glass defect image capturing apparatus of claim 7, wherein said second drive mechanism includes a third motor, said third motor driving said striped light source to rotate about a third axis coincident with said image capturing optical axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922056513.5U CN211263236U (en) | 2019-11-25 | 2019-11-25 | Glass defect image acquisition equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922056513.5U CN211263236U (en) | 2019-11-25 | 2019-11-25 | Glass defect image acquisition equipment |
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| CN211263236U true CN211263236U (en) | 2020-08-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7297354B1 (en) * | 2023-02-07 | 2023-06-26 | 株式会社シュヴァルベル | Image processing system and image processing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7297354B1 (en) * | 2023-02-07 | 2023-06-26 | 株式会社シュヴァルベル | Image processing system and image processing method |
| JP7327866B1 (en) | 2023-02-07 | 2023-08-16 | 株式会社シュヴァルベル | Learning model generation method |
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Effective date of registration: 20220629 Address after: 361000 unit 105, No. 1-1, West Pugong Road, phase III, software park, torch high tech Zone, Xiamen, Fujian Patentee after: Xiamen instant Technology Co.,Ltd. Address before: 361000 Siming South Road, Xiamen, Fujian Province, No. 422 Patentee before: XIAMEN University |