CN106091997B - Method, device and system for testing glass performance - Google Patents
Method, device and system for testing glass performance Download PDFInfo
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- CN106091997B CN106091997B CN201610383380.0A CN201610383380A CN106091997B CN 106091997 B CN106091997 B CN 106091997B CN 201610383380 A CN201610383380 A CN 201610383380A CN 106091997 B CN106091997 B CN 106091997B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/30—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
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- Measuring And Recording Apparatus For Diagnosis (AREA)
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Abstract
A method, a device and a system for testing the performance of glass are disclosed, wherein the method comprises the following steps: obtaining a test picture obtained by placing glass to be tested between a black and white stripe background and a shooting device and shooting the black and white stripe background by the shooting device through the glass to be tested, wherein the whole glass to be tested is positioned in the shooting range of the shooting device; comparing and analyzing the test picture with a standard picture to obtain a comparison and analysis result, wherein the standard picture is a picture obtained by shooting the black-and-white stripe background by the shooting device when the glass to be tested is not placed; and determining the performance of the glass to be tested according to the comparison analysis result. The embodiment of the invention can realize the test of the warping degree of glass with any size.
Description
Technical Field
the invention relates to the field of equipment testing, in particular to a method and a system for testing glass performance.
Background
there are increasingly numerous applications for glass, such as glass on smart interactive panels, cover glass for conference machines, and glass in various other applications, where the performance of the glass directly affects the performance of the products to which the glass is applied, and the performance of the glass generally includes glass warp. Therefore, the warp degree, the bending value, and the like of the glass need to be checked and determined at the time of shipment of the glass. For testing, the glass was placed on a marble platform and then confirmed with a plug gauge. The test mode needs to test the glass, and the glass can be tested only by placing the glass on a flat marble table top corresponding to the size of the glass, so that the size of the test size is severely limited, and the bending degree of the periphery of the glass can be tested only.
Disclosure of Invention
based on this, the embodiments of the present invention are directed to a method for testing glass performance, an apparatus for testing glass performance, and a system for testing glass performance, which can achieve the test of warp of glass of any size.
In order to achieve the purpose, the embodiment of the invention adopts the following technical scheme:
A method of testing the properties of glass comprising:
Obtaining a test picture obtained by placing glass to be tested between a black and white stripe background and a shooting device and shooting the black and white stripe background by the shooting device through the glass to be tested, wherein the whole glass to be tested is positioned in the shooting range of the shooting device;
comparing and analyzing the test picture with a standard picture to obtain a comparison and analysis result, wherein the standard picture is a picture obtained by shooting the black-and-white stripe background by the shooting device when the glass to be tested is not placed;
and determining the performance of the glass to be tested according to the comparison analysis result.
An apparatus for testing the properties of glass comprising:
The test photo acquisition module is used for acquiring a test picture obtained by shooting the black and white stripe background by the shooting device through the glass to be tested after the glass to be tested is placed between the black and white stripe background and the shooting device, and the whole glass to be tested is positioned in the shooting range of the shooting device;
the comparison analysis module is used for comparing and analyzing the test picture with a standard picture to obtain a comparison analysis result, wherein the standard picture is a picture obtained by shooting the black-and-white stripe background by the shooting device when the glass to be tested is not placed;
and the performance determining module is used for determining the performance of the glass to be tested according to the comparison analysis result.
A system for testing the performance of glass comprising: the performance analysis device comprises the device for testing the glass performance, the device for shooting the image and the device for testing the background of the black and white stripes,
according to the scheme of the embodiment of the invention, by adopting the black and white stripe background, when the glass to be tested needs to be tested, the black and white stripe background is shot by the shooting device through the glass to be tested to obtain the test picture, the test picture is compared with the standard picture obtained by directly shooting the black and white stripe background by the shooting device when the glass to be tested is not placed, the performance of the glass to be tested is determined based on the comparison analysis result, because of the strong contrast effect of the black and white stripe, the light reaching the shooting device through the glass to be tested generates the refraction phenomenon when passing through the glass to be tested, the refraction phenomenon enables the path of the light reaching the shooting device to be changed, therefore, by comparing the test picture with the standard picture without the glass to be tested (namely, the light which does not pass through the glass to be tested), therefore, the performance of the glass to be tested can be analyzed and determined, and meanwhile, the shooting device is adopted for shooting, so that the range of the shooting device is wide, and the test on the warping degree of the glass with any size can be realized.
Drawings
FIG. 1 is a schematic diagram of an environment in which aspects of the present invention may be implemented in one embodiment;
FIG. 2 is a schematic diagram of an environment in which aspects of the present invention may be implemented in another embodiment;
FIG. 3 is a schematic flow chart of a method of testing glass properties according to the present invention in one embodiment;
FIG. 4 is a schematic illustration of a black and white striped background in one embodiment;
FIG. 5 is a schematic view showing the structure of an apparatus for testing glass properties according to the present invention in one embodiment.
Detailed Description
in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
A schematic diagram of an environment in which the inventive arrangements are applied in one embodiment is shown in fig. 1. As shown in fig. 1, in the embodiment of the present invention, when the performance of the glass 100 to be tested needs to be tested, the glass 100 to be tested is placed in front of the black and white stripe background 101, and the photographing device 102 is used on the other side of the glass 100 to be tested relative to the black and white stripe background 101, the whole glass 100 to be tested is located within the photographing range of the photographing device 102, the photographing device 102 is used to photograph the black and white stripe background 101 through the glass 100 to be tested, and a test picture is obtained after photographing. When the glass 100 to be tested is not placed, the shooting device 102 directly shoots the black and white stripe background 101 to obtain a standard picture. Due to the strong contrast effect of the black and white stripes, the light rays reaching the shooting device 102 through the glass 100 to be tested can generate the refraction phenomenon of the light rays when passing through the glass 100 to be tested, and the refraction changes the path of the light rays reaching the shooting device 102, and the change is reflected on a test picture shot by the shooting device 102, so that the performance of the glass to be tested can be analyzed and determined by comparing and analyzing the test picture with a standard picture.
Accordingly, a schematic flow chart of a method of testing glass properties in one embodiment is shown in FIG. 3. As shown in fig. 3, the method in this embodiment includes:
Step S301: obtaining a test picture obtained by placing glass to be tested between a black and white stripe background and a shooting device and shooting the black and white stripe background by the shooting device through the glass to be tested, wherein the whole glass to be tested is positioned in the shooting range of the shooting device;
Step S302: comparing and analyzing the test picture with a standard picture to obtain a comparison and analysis result, wherein the standard picture is a picture obtained by shooting the black-and-white stripe background by the shooting device when the glass to be tested is not placed;
Step S303: and determining the performance of the glass to be tested according to the comparison analysis result.
As described above, due to the strong contrast effect of the black and white stripes, the light reaching the shooting device through the glass to be tested generates a refraction phenomenon when passing through the glass to be tested, and the refraction changes the path of the light reaching the shooting device, so that the performance of the glass to be tested can be analyzed and determined by comparing the test picture with a standard picture without the glass to be tested (i.e. without the refraction of the glass to be tested), and meanwhile, because the shooting device is adopted for shooting, the range of the shooting device is very wide, so that the test of the warping degree of the glass of any size can be realized.
In a specific example, when the test picture and the standard picture are compared and analyzed to obtain a comparison and analysis result, a specific manner may include:
comparing the test picture with the standard picture, and determining a bending point in the test picture;
And determining the deformation quantity of each bending point according to the standard picture, wherein the comparison analysis result comprises each bending point and the deformation quantity of each bending point.
As described above, the light reaching the photographing device through the glass to be tested may generate a refraction phenomenon of the light when passing through the glass to be tested, and the refraction may cause a change in a path of the light reaching the photographing device, and the change may be reflected on the obtained test picture. Under the condition that the performance of the glass to be tested meets the requirements, light rays reaching each point of the glass to be tested are parallel and the refraction conditions are the same, namely after the glass to be tested is refracted and reaches the shooting device, the characteristics of a black and white stripe background picture shot by the shooting device and a standard picture are the same. However, when the glass to be tested has warpage, bending, etc., the refraction condition of the point at the warpage and bending of the glass to be tested will be different from the refraction condition of other flat parts, so that the black and white stripes of the picture with the black and white stripe background taken by the camera will be bent, and the characteristic of the picture will be different from that of the standard picture. In the case of a black and white striped background, this bending is more pronounced due to the strong contrast effect of the black and white stripes. Therefore, by comparing the standard picture without bend with the test picture which may generate bend, the bend points of the test picture can be determined, and the deformation amount of the bend points can be determined according to the bend points. The specific manner of determining the bending point and the amount of deformation of the bending point may be performed in any manner that is currently available and that may later appear.
On the other hand, because the glass to be tested is required to be positioned in the shooting range of the shooting device when the test picture is shot, the position of the shooting device when the test picture is shot is possibly inconsistent with the position of the shooting device when the standard picture is shot, the width of the black and white stripe in the finally obtained standard picture is inconsistent with that of the black and white stripe in the test picture, and therefore the test picture can be subjected to equal-proportion adjustment before the test picture is compared with the standard picture. That is, the specific manner of comparing the test picture with the standard picture to obtain the comparison analysis result may include:
Carrying out equal proportion adjustment on the test picture;
Comparing the adjusted test picture with the standard picture to determine a bending point in the test picture;
and determining the deformation quantity of each bending point according to the standard picture, wherein the comparison analysis result comprises each bending point and the deformation quantity of each bending point.
therefore, through the equal proportion adjustment, the widths of the black stripe and the white stripe of the adjusted test picture and the standard picture are consistent, and the bending point and the deformation amount of the bending point in the test picture can be determined quickly.
It can be understood by those skilled in the art that, in addition to performing the equal-scale adjustment on the test picture, the standard picture may also be adjusted, or the test picture and the standard picture may be adjusted at the same time, as long as the widths of the black and white stripes of the test picture and the standard picture obtained after the adjustment are consistent.
And after the comparison analysis result containing the bending points and the deformation quantity of the bending points is obtained, the specific performance of the glass to be tested is determined.
In one embodiment, the property of the glass to be tested may include warpage. When determining the warpage, the maximum deformation amount of each bending point can be determined as the warpage of the glass to be tested.
in one embodiment, the property of the glass to be tested may include curvature. When the bending degree is determined, a preset number of bending points with the largest deformation amount can be obtained, after the preset number of bending points are connected, the bending degree of the glass to be tested is determined according to the preset number of bending points and the deformation amount thereof.
of course, it will be understood by those skilled in the art that the warp and bow properties can be determined simultaneously.
when the shooting device shoots to obtain the test picture and the standard picture, in order to obtain clear test picture and standard picture, a light source with preset luminous flux can be irradiated to the background of the black and white stripes, and then the shooting device shoots. The preset luminous flux can be set in combination with actual needs, and the definition is determined particularly by being capable of clearly seeing the obtained pictures and not influenced by light reflection due to too bright. In one specific example of the present invention, the preset luminous flux here may be set to 200 lumens.
In addition, in the above-mentioned black and white stripe background, since the screen background of the black and white stripe has a visual effect of strong contrast, the widths of the black stripe and the white stripe can be set according to actual needs, and the width of the black stripe and the width of the white stripe may be the same or different. In one specific example, the width of the black stripe in the black and white stripe background can be set smaller than the width of the white stripe, so as to obtain a visual effect with stronger contrast.
in addition, since the glass itself has a transverse or longitudinal (as will be understood by those skilled in the art, the transverse and longitudinal directions are relative concepts), if the direction of the black-and-white stripe background is the same as that of the tempered stripe, the bending point in the obtained test picture may be affected to some extent. Therefore, in order to avoid the influence of the tempering grains on the test picture as much as possible and make the bending point of the obtained test picture more obvious, in the scheme of the embodiment of the invention, the included angles between the black stripe/white stripe in the black and white stripe background and the tempering grains of the glass to be tested can be set to be angles other than 0 degree and 90 degrees. In one specific example, the included angle between the black stripe/white stripe in the black and white stripe background and the tempering line of the glass to be tested is 45 degrees.
The method according to the embodiment of the present invention as described above is explained in detail below with reference to a specific example.
As described above, in the embodiment of the present invention, the test picture obtained by shooting the black-and-white stripe background when the glass 100 to be tested is placed needs to be compared with the standard picture obtained by shooting the black-and-white stripe background when the glass 100 to be tested is not placed. In fact, the process of obtaining the standard picture and the process of obtaining the test picture may be partially sequential.
In one embodiment, the glass to be tested may be placed at a suitable position to obtain the test picture after obtaining the standard picture, and at this time, since the glass to be tested needs to be completely placed within the shooting range of the shooting device 102, the positions of the shooting device 102 when obtaining the standard picture and the shooting device 102 when obtaining the test picture may not be the same, and therefore, in most cases, the test picture and the standard picture need to be adjusted in equal proportion when determining the comparison and analysis result.
In another embodiment, after the glass to be tested is placed at a proper position to obtain a test picture, the glass to be tested is taken out, the position of the photographing device 102 is kept unchanged, and a standard picture is taken for a black-and-white stripe background. In this case, the position where the photographing device 102 is located when the standard picture is obtained is the same as when the test picture is obtained, and thus it may be considered that the test picture and the standard picture are not scaled equally when determining the comparative analysis result.
considering that the photographing device 102 may be any device capable of taking pictures in practical applications, there are more and more portable photographing devices, such as a handheld single lens reflex, a general camera, a camera of a mobile terminal, and the like, and therefore, in the following example, the standard picture is taken first, then the test picture is taken, and an equal scale adjustment is required.
In the implementation of the embodiment of the present invention, it is first necessary to provide a black and white striped background. The black and white stripe background can be obtained by providing a black and white stripe background wall or flatly attaching the black and white stripe to the wall. Of course, if the drawing smoothness can be ensured, the black and white stripe background can also be obtained by directly drawing on a smooth wall, and the embodiment of the present invention does not limit the specific acquisition manner and form of the black and white stripe background.
in the embodiment of the present invention, the black and white stripe background may be a black and white oblique stripe background, as shown in fig. 4, the black stripe and the white stripe are arranged at an interval and are parallel to each other, and the width of the black stripe is smaller than that of the white stripe, so as to obtain a stronger contrast effect. The oblique angle of the black stripe and the white stripe was 45 degrees. Since the glass to be tested is usually placed horizontally or vertically and the glass to be tested has a horizontal or vertical steel pattern, the included angle between the black stripe and the white stripe and the steel pattern of the glass to be tested is also considered to be 45 degrees. Of course, those skilled in the art can understand that other settings can be made for the included angle of the black and white stripes, and the included angle between the black/white stripes and the steel pattern can be 45 degrees by adjusting the placing mode of the glass to be tested when the glass to be tested is placed. The embodiment of the present invention is not limited thereto.
And then, a light source with more than 200 lumens is irradiated on the black and white stripe background, and the black and white stripe background is shot through a shooting device to obtain a standard picture.
then, the glass to be tested is placed at a proper position between the black-and-white stripe background and the shooting device, for example, the glass to be tested is placed at a position 3 meters away from the testing jig, the imaging of the shooting device covers the whole glass to be tested, namely, the whole glass to be tested should be located within the shooting range of the shooting device, and then the shooting device is used for shooting to obtain the shot testing picture.
And (3) carrying out equal proportion adjustment on the test picture, specifically, carrying out an equal proportion method or reducing on each pixel in the test picture, wherein the width of the black stripe and the width of the white stripe of the adjusted test picture are respectively equal to the width of the black stripe and the width of the white stripe in the standard picture on the basis of not changing the mutual relation among the pixels in the test picture. And then, connecting the top end and the tail end of each oblique line by using a straight line, comparing the actually shot test picture with the test picture, measuring a connecting line of two points and an actual bending point, and determining the deformation amount of the bending point of each oblique line according to the two points of the top end and the tail end of each oblique line, the connecting line of the two points and the bending point related to the oblique line, wherein the deformation amount is also the line deformation amount of the oblique line, so that the bending points and the deformation amount of each bending point are finally obtained.
Then, the maximum value of the deformation amount in each bending point is obtained, and the maximum value is determined as the warping degree of the glass to be tested.
and obtaining a preset number of deformation quantities with the maximum numerical value in the deformation quantities of all the bending points, connecting all the bending points corresponding to the deformation quantities, and determining the bending degree of the glass to be tested according to the preset number of bending points and the deformation quantities thereof. The specific way of determining the degree of bending on the basis of the bending point and its deformation may be carried out in any way now known and that may occur in the future.
Based on the scheme of the embodiment of the invention, shooting is carried out through the shooting device, the problem of the size of the glass does not need to be considered, the test on the proportion of any size can be realized, the warping degree of the glass can be tested, and the bending degree of the glass can be tested at the same time.
Based on the same idea as the method, the embodiment of the invention also provides a device for testing the glass performance, and a structural schematic diagram of the device for testing the glass performance in the embodiment is shown in fig. 5.
as shown in fig. 5, the apparatus in the present embodiment includes:
The test photo obtaining module 501 is configured to obtain a test picture obtained by placing glass to be tested between a black-and-white stripe background and a shooting device, and shooting the black-and-white stripe background by the shooting device through the glass to be tested, where the whole glass to be tested is located within a shooting range of the shooting device;
a comparison analysis module 502, configured to compare and analyze the test picture with a standard picture to obtain a comparison analysis result, where the standard picture is a picture obtained by shooting the black-and-white stripe background by the shooting device when the glass to be tested is not placed;
and a performance determining module 503, configured to determine the performance of the glass to be tested according to the comparison analysis result.
As described above, due to the strong contrast effect of the black and white stripes, the light reaching the shooting device through the glass to be tested generates a refraction phenomenon when passing through the glass to be tested, and the refraction changes the path of the light reaching the shooting device, so that the performance of the glass to be tested can be analyzed and determined by comparing the test picture with a standard picture without the glass to be tested (i.e. without the refraction of the glass to be tested), and meanwhile, because the shooting device is adopted for shooting, the range of the shooting device is very wide, so that the test of the warping degree of the glass of any size can be realized.
In a specific example, as shown in fig. 5, the comparison analysis module 502 may include:
A bending point determining module 5022, configured to compare the test picture with the standard picture, and determine a bending point in the test picture;
A deformation amount determining module 5023, configured to determine deformation amounts of the bending points according to the standard picture, where the comparison analysis result includes the bending points and deformation amounts of the bending points.
as described above, the light reaching the photographing device through the glass to be tested may generate a refraction phenomenon of the light when passing through the glass to be tested, and the refraction may cause a change in a path of the light reaching the photographing device, and the change may be reflected on the obtained test picture. Under the condition that the performance of the glass to be tested meets the requirements, light rays reaching each point of the glass to be tested are parallel and the refraction conditions are the same, namely after the glass to be tested is refracted and reaches the shooting device, the characteristics of a black and white stripe background picture shot by the shooting device and a standard picture are the same. However, when the glass to be tested has warpage, bending, etc., the refraction condition of the point at the warpage and bending of the glass to be tested will be different from the refraction condition of other flat parts, so that the black and white stripes of the picture with the black and white stripe background taken by the camera will be bent, and the characteristic of the picture will be different from that of the standard picture. In the case of a black and white striped background, this bending is more pronounced due to the strong contrast effect of the black and white stripes. Therefore, by comparing the standard picture without bend with the test picture which may generate bend, the bend points of the test picture can be determined, and the deformation amount of the bend points can be determined according to the bend points. The specific manner of determining the bending point and the amount of deformation of the bending point may be performed in any manner that is currently available and that may later appear.
On the other hand, because the glass to be tested is required to be positioned in the shooting range of the shooting device when the test picture is shot, the position of the shooting device when the test picture is shot is possibly inconsistent with the position of the shooting device when the standard picture is shot, the width of the black and white stripe in the finally obtained standard picture is inconsistent with that of the black and white stripe in the test picture, and therefore the test picture and the standard picture can be adjusted to be in equal proportion before the test picture is compared with the standard picture.
Therefore, as shown in fig. 5, the alignment analysis module 502 in this embodiment may further include:
The picture adjusting module 5021 is configured to perform equal-scale adjustment on the test picture.
At this time, the bending point determining module 5022 compares the adjusted test picture with the standard picture to determine the bending point in the test picture.
therefore, through the equal proportion adjustment, the widths of the black stripe and the white stripe of the adjusted test picture and the standard picture are consistent, and the bending point and the deformation amount of the bending point in the test picture can be determined quickly.
it can be understood by those skilled in the art that, in addition to performing the equal-scale adjustment on the test picture, the standard picture may also be adjusted, or the test picture and the standard picture may be adjusted at the same time, as long as the widths of the black and white stripes of the test picture and the standard picture obtained after the adjustment are consistent.
And after the comparison analysis result containing the bending points and the deformation quantity of the bending points is obtained, the specific performance of the glass to be tested is determined.
As shown in fig. 5, in one embodiment, the performance determination module 503 may include at least one of a warp determination module 5031 and a bow determination module 5032.
The warp determining module 5031 is configured to determine a maximum value of deformation of each bending point as the warp of the glass to be tested;
the curvature determining module 5032 is configured to obtain a predetermined number of bending points with the largest deformation amount, connect the predetermined number of bending points, and determine the curvature of the glass to be tested according to the predetermined number of bending points and the deformation amount thereof.
When the shooting device shoots to obtain the test picture and the standard picture, in order to obtain clear test picture and standard picture, a light source with preset luminous flux can be irradiated to the background of the black and white stripes, and then the shooting device shoots. The preset luminous flux can be set in combination with actual needs, and the definition is determined particularly by being capable of clearly seeing the obtained pictures and not influenced by light reflection due to too bright. In one specific example of the present invention, the preset luminous flux here may be set to 200 lumens.
in addition, in the above-mentioned black and white stripe background, since the screen background of the black and white stripe has a visual effect of strong contrast, the widths of the black stripe and the white stripe can be set according to actual needs, and the width of the black stripe and the width of the white stripe may be the same or different. In one specific example, the width of the black stripe in the black and white stripe background can be set smaller than the width of the white stripe, so as to obtain a visual effect with stronger contrast.
in addition, since the glass itself has a steel pattern in a transverse direction or a longitudinal direction (as will be understood by those skilled in the art, the transverse direction and the longitudinal direction are relative concepts, and specifically, the direction of the black-white stripe background is the same as the direction of the tempered pattern of the glass itself), the bending point in the obtained test picture may be affected to some extent. Therefore, in order to avoid the influence of the tempering grains on the test picture as much as possible and make the bending point of the obtained test picture more obvious, in the scheme of the embodiment of the invention, the included angles between the black stripe/white stripe in the black and white stripe background and the tempering grains of the glass to be tested can be set to be angles other than 0 degree and 90 degrees. In one specific example, the included angle between the black stripe/white stripe in the black and white stripe background and the tempering line of the glass to be tested is 45 degrees.
In one embodiment, the invention also provides a system for testing the performance of glass, which comprises a performance analysis device, the shooting device and a test background device containing the black-and-white stripe background, wherein the performance analysis device comprises the device for testing the performance of glass. It will be appreciated by those skilled in the art that the performance analysis device referred to in the system may, in a specific technical application, be associated equipment such as a CPU, a GPU, a personal computer, a notebook computer, and various other possible equipment configured to test the performance of the glass as described above, and the device for testing the performance of the glass as described above may be present in the form of program modules in the equipment.
the technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
the above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A method of testing the properties of glass, comprising:
Obtaining a test picture obtained by placing glass to be tested between a black and white stripe background and a shooting device and shooting the black and white stripe background by the shooting device through the glass to be tested, wherein the whole glass to be tested is positioned in the shooting range of the shooting device;
Comparing and analyzing the test picture with a standard picture to obtain a comparison and analysis result, wherein the standard picture is a picture obtained by shooting the black-and-white stripe background by the shooting device when the glass to be tested is not placed; the analysis result comprises bending points of the test picture and deformation quantity of each bending point;
determining the performance of the glass to be tested according to the comparison analysis result;
comparing and analyzing the test picture and the standard picture, wherein the mode for obtaining the comparison and analysis result comprises the following steps:
Comparing the test picture with the standard picture, and determining a bending point in the test picture; determining the deformation amount of each bending point according to the standard picture;
The mode for determining the performance of the glass to be tested according to the comparison analysis result comprises the following steps: obtaining a preset number of bending points with the maximum deformation, and determining the bending degree of the glass to be tested according to the preset number of bending points and the deformation thereof after connecting the preset number of bending points;
The width of the black stripe in the black and white stripe background is smaller than that of the white stripe.
2. the method for testing the performance of glass according to claim 1, further comprising, before comparing the test picture with the standard picture, the steps of:
and carrying out equal proportion adjustment on the test picture.
3. A method of testing the properties of glass according to claim 1 or 2, comprising at least one of:
the test picture and the standard picture are pictures obtained by projecting a light source with preset luminous flux to the black-and-white stripe background and then shooting;
the width of the black stripe in the black and white stripe background is less than that of the white stripe;
the included angle between the black stripe/white stripe in the black and white stripe background and the tempering line of the glass to be tested is an angle other than 0 degree and 90 degrees;
And the included angle between the black stripe/white stripe in the black and white stripe background and the tempering line of the glass to be tested is 45 degrees.
4. a method for testing the properties of glass according to claim 3, wherein the predetermined luminous flux is 200 lumens.
5. an apparatus for testing the performance of glass, comprising:
The test photo acquisition module is used for acquiring a test picture obtained by shooting the black and white stripe background by the shooting device through the glass to be tested after the glass to be tested is placed between the black and white stripe background and the shooting device, and the whole glass to be tested is positioned in the shooting range of the shooting device;
The comparison analysis module is used for comparing and analyzing the test picture with a standard picture to obtain a comparison analysis result, wherein the standard picture is a picture obtained by shooting the black-and-white stripe background by the shooting device when the glass to be tested is not placed; the analysis result comprises bending points of the test picture and deformation quantity of each bending point;
The performance determining module is used for determining the performance of the glass to be tested according to the comparison analysis result;
the alignment analysis module comprises:
the bending point determining module is used for comparing the test picture with the standard picture and determining a bending point in the test picture;
the deformation quantity determining module is used for determining the deformation quantity of each bending point according to the standard picture;
the performance determination module comprises a tortuosity determination module;
The bending degree determining module is used for obtaining a preset number of bending points with the largest deformation amount, connecting the preset number of bending points, and determining the bending degree of the glass to be tested according to the preset number of bending points and the deformation amount thereof;
The width of the black stripe in the black and white stripe background is smaller than that of the white stripe.
6. the apparatus for testing glass properties of claim 5, wherein:
The alignment analysis module comprises: the picture adjusting module is used for carrying out equal-proportion adjustment on the test picture;
the bending point determining module is used for comparing the test picture adjusted by the picture adjusting module with a standard picture.
7. an apparatus for testing glass properties according to claim 5 or 6, characterized by comprising at least one of:
the test picture and the standard picture are pictures obtained by projecting a light source with preset luminous flux to the black-and-white stripe background and then shooting;
The included angle between the black stripe/white stripe in the black and white stripe background and the tempering line of the glass to be tested is an angle other than 0 degree and 90 degrees;
And the included angle between the black stripe/white stripe in the black and white stripe background and the tempering line of the glass to be tested is 45 degrees.
8. A system for testing the performance of glass, comprising: a performance analysis device, a camera and a test background device comprising a black and white striped background, wherein the performance analysis device comprises a device for testing the performance of glass according to any one of claims 5 to 7.
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| CN108225204A (en) * | 2017-11-30 | 2018-06-29 | 彩虹（合肥）液晶玻璃有限公司 | A kind of on-line measurement glass plate warping apparatus and method |
| CN108362707B (en) * | 2018-02-27 | 2020-12-11 | 永德利硅橡胶科技(深圳)有限公司 | Method and equipment for testing mobile phone toughened arc mask |
| CN109631785A (en) * | 2018-12-12 | 2019-04-16 | 彩虹（合肥）液晶玻璃有限公司 | A kind of glass substrate measuring device and measuring method |
| CN110406967B (en) * | 2019-07-29 | 2021-01-08 | 广东华中科技大学工业技术研究院 | Fragile object clamping and sorting robot |
| CN111060038A (en) * | 2020-01-02 | 2020-04-24 | 云谷（固安）科技有限公司 | Device and method for detecting surface flatness of film |
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