CN116233611A - Image shooting method, device, equipment and readable storage medium - Google Patents
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Abstract
The application discloses an image shooting method, an image shooting device, image shooting equipment and a readable storage medium, which are applied to the technical field of image shooting, wherein the second shooting height of each detection point of a second detection channel is determined by acquiring the first shooting height of each detection point of a first detection channel, then the shooting equipment is controlled to shoot an initial image of each detection point on the second detection channel based on the second shooting height, and finally the clearest shooting distance of each detection point of the second detection channel is finally determined to shoot according to the initial image shot. The shooting distance of the current detection channel can be initially adjusted through the shooting distance of the last detection channel, so that the shooting distance is adjusted in advance. And the shot lens has a certain depth of field, even if the shooting distance needs to be adjusted, the shooting distance needs to be finely adjusted, and the adjustment action can be rapidly completed. And further, the definition of each image shooting can be ensured, so that the accuracy of a defect detection result is improved.
Description
Technical Field
The present disclosure relates to the field of image capturing technologies, and in particular, to an image capturing method, apparatus, device, and readable storage medium.
Background
In many industries, the surface of a product is curved or not smooth due to the influence of temperature, materials and manufacturing process during the production process. Therefore, defect detection is required by photographed images after production of the product to judge whether there is a curved or non-smooth area on the surface of the product by photographing the image of the product.
However, in the current defect detection process, the shot image is not clear, so that the problem of inaccurate detection result is caused.
Disclosure of Invention
Based on the above problems, the present application provides an image capturing method, an image capturing device, an image capturing apparatus, and a readable storage medium, which aim to improve the sharpness of a captured image in a defect detection process.
In a first aspect, an embodiment of the present application provides an image capturing method, where the method is applied to an image capturing device, and the image capturing device is connected to the capturing device, and the method includes:
acquiring a first shooting height between the shooting equipment and each detection point on a first detection channel;
determining a second shooting height between the shooting equipment and each detection point on a second detection channel according to the first shooting height between the shooting equipment and each detection point on the first detection channel;
controlling the shooting equipment to shoot an initial image of each detection point on a second detection channel based on a second shooting height between the shooting equipment and each detection point on the second detection channel;
and adjusting the second shooting height by utilizing the definition of the initial image, and acquiring the final shooting height between the shooting equipment and each detection point on the second detection channel.
Optionally, the method for capturing an image further includes:
and controlling the shooting equipment to shoot clear images of each detection point on the second detection channel according to the final shooting height.
Optionally, the adjusting the second shooting height by using the sharpness of the initial image, and acquiring a final shooting height between the shooting device and each detection point on the second detection track, includes:
calculating the definition of the initial image to obtain a first definition;
obtaining a first distance difference according to the difference value between the first definition and the median value of the definition threshold, wherein the median value of the definition threshold is the median value of a first definition threshold and a second definition threshold, and the second definition threshold is larger than the first definition threshold;
and determining the final shooting height according to the first distance difference.
Optionally, the obtaining a first distance difference according to the difference between the first sharpness and the sharpness threshold median includes:
calculating the difference value between the first definition and the median value of the definition threshold to obtain a definition difference value;
and obtaining a first distance difference according to the corresponding relation between the clear difference and the standard distance difference.
Optionally, the correspondence between the clear difference and the standard distance difference is pre-stored in a correspondence table.
Optionally, the second photographing height between the photographing apparatus and each of the detection points on the second detection lane is the same as the first photographing height between the photographing apparatus and each of the detection points corresponding to the first detection lane.
Optionally, the second detection track is parallel to the first detection track.
Optionally, each detection point of the first detection channel and each detection channel corresponding to the second detection channel are on the same straight line perpendicular to the first detection channel.
In a second aspect, an embodiment of the present application provides an image capturing apparatus, including:
the acquisition module is used for acquiring a first shooting height between the shooting equipment and each detection point on the first detection channel;
the first determining module is used for determining a second shooting height between the shooting equipment and each detection point on the second detection channel according to the first shooting height between the shooting equipment and each detection point on the first detection channel;
the first shooting module is used for controlling the shooting equipment to shoot an initial image of each detection point on the second detection channel based on a second shooting height between the shooting equipment and each detection point on the second detection channel;
and the second determining module is used for adjusting the second shooting height by utilizing the definition of the initial image and acquiring the final shooting height between the shooting equipment and each detection point on the second detection channel.
In a third aspect, embodiments of the present application provide an apparatus, including:
a memory for storing a computer program;
a processor for executing the computer program to cause the apparatus to perform the method of image capturing according to any one of the preceding first aspects.
In a fourth aspect, embodiments of the present application provide a computer-readable storage medium having stored therein a computer program, which when executed by a processor, implements the method of image capturing according to any one of the preceding first aspects,
compared with the prior art, the application has the following beneficial effects:
the application discloses an image shooting method, an image shooting device, image shooting equipment and a readable storage medium, wherein the second shooting height of each detection point of a second detection channel is determined by acquiring the first shooting height of each detection point of a first detection channel, then the shooting equipment is controlled to shoot an initial image of each detection point of the second detection channel based on the second shooting height between the shooting equipment and each detection point of the second detection channel, and finally the clearest shooting distance of each detection point of the second detection channel is finally determined to shoot according to the initial image. Therefore, the shooting distance of the current detection channel can be initially adjusted through the shooting distance of the last detection channel, and the shooting distance is adjusted in advance. And the shot lens has a certain depth of field, even if the shooting distance needs to be adjusted, the shooting distance needs to be finely adjusted, and the adjustment action can be rapidly completed. And further, the definition of each image shooting can be ensured, so that the accuracy of a defect detection result is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive faculty for a person skilled in the art.
Fig. 1A is a schematic diagram of an application scenario in an embodiment of the present application;
FIG. 1B is a schematic diagram of a defect detection defect according to an embodiment of the present application;
fig. 2 is a method flowchart of an image capturing method according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of an image capturing device according to an embodiment of the present application;
FIG. 4 is a schematic structural diagram of a computer readable medium according to an embodiment of the present application;
fig. 5 is a schematic hardware structure of a server according to an embodiment of the present application.
Detailed Description
As described above, in many industries, the product is affected by temperature, materials and manufacturing process during the production process, so that the surface of the produced product is curved or not smooth. Therefore, defect detection is required by photographed images after production of the product to judge whether there is a curved or non-smooth area on the surface of the product by photographing the image of the product.
However, in the current defect detection process, the shot image is not clear, so that the problem of inaccurate detection result is caused.
Based on this, in order to solve the above-mentioned problems, the present application discloses an image capturing method, apparatus, device and readable storage medium, by acquiring a first capturing height of each detection point of a first detection lane, determining a second capturing height of each detection point of a second detection lane, and then controlling a capturing device to capture an initial image of each detection point on the second detection lane based on the second capturing height between the capturing device and each detection point on the second detection lane; and finally determining the clearest shooting distance of each detection point of the second detection channel according to the initial shot image to shoot. Therefore, the shooting distance of the current detection channel can be initially adjusted through the shooting distance of the last detection channel, and the shooting distance is adjusted in advance. And the shot lens has a certain depth of field, even if the shooting distance needs to be adjusted, the shooting distance needs to be finely adjusted, and the adjustment action can be rapidly completed. And further, the definition of each image shooting can be ensured, so that the accuracy of a defect detection result is improved.
For example, one of the scenarios of the embodiments of the present application may be applied to the scenario shown in fig. 1 a. The scene comprises a camera 101 and an object to be detected 102, wherein the camera 101 shoots each detection point on a detection channel in the object to be detected 102, and a computer can be used for realizing an image shooting method by adopting the implementation mode provided by the embodiment of the application. The scenario shown in fig. 1b is a schematic diagram of a defect that may occur in performing defect detection on the surface of a product. In fig. 1b, points 1,2 and 3 correspond to measurement points of different heights, respectively.
In addition, the embodiment of the present application is not limited in terms of execution subject, as long as the operations disclosed in the embodiments provided by the embodiment of the present application are executed. Second, the above scenario is only one example of a scenario provided in the embodiments of the present application, and the embodiments of the present application are not limited to this scenario.
Second, the above scenario is only one example of a scenario provided in the embodiments of the present application, and the embodiments of the present application are not limited to this scenario.
In order to make the present application solution better understood by those skilled in the art, the following description will clearly and completely describe the technical solution in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
Referring to fig. 2, the method is a flowchart of an image capturing method provided in an embodiment of the present application. Referring to fig. 2, the image capturing method provided in the embodiment of the present application may include:
s201: a first photographing height between the photographing apparatus and each of the detection points on the first detection lane is obtained.
The detection point on the detection channel can be a high-precision component with precision requirements, such as a wafer, and the like, and certainly, the application is not particularly limited to the detection point, and the implementation of the embodiment of the application is not affected.
The first shooting height between the shooting device and each detection point on the first detection point can be the same or different.
S202: and determining a second shooting height between the shooting device and each detection point on the second detection channel according to the first shooting height between the shooting device and each detection point on the first detection channel.
In this embodiment, the second detection channel is parallel to the first detection channel, and each detection point of the first detection channel and each detection channel corresponding to the second detection channel are on the same straight line perpendicular to the first detection channel.
For ease of understanding, examples are illustrated herein, such as: it is noted that the example is only for convenience of understanding, and the scope of the application is not limited, and the detection tracks are defined as columns, that is, the y-axis in the planar coordinate system, the respective detection points of each column are rows, that is, the x-axis in the planar coordinate system, the first detection point coordinates of the first detection track are (1, 1), the first detection point coordinates of the second detection track are (2, 1), the second detection point coordinates of the second detection track are (1, 2), and so on.
In the embodiment of the present application, the first detection points of the detection tracks may be placed on the same wafer or different wafers having an association relationship with each other. The first case is discussed here, that is, the second photographing height between the photographing apparatus and each of the detection points on the second detection lane is the same as the first photographing height between the photographing apparatus and each of the detection points corresponding to the first detection lane. After shooting is completed and the height of each detection point on the first detection channel is acquired, the lens moves to the second detection channel, wherein any detection point which can move to the second detection channel is taken as a shooting starting point, and if the lens moves to the first detection point of the second detection channel, the acquired first shooting distance between the shooting equipment and the first detection point of the first detection channel is taken as the second shooting height between the shooting equipment and the first detection point of the second detection channel. Because the first detection point of the first detection channel and the first detection point of the second detection channel are the same wafer or other high-precision components in the embodiment of the application, even if the first detection point of the second detection channel has other defects such as warpage, the wafer with the defects can be rapidly detected due to the fact that the lens has a certain depth of field, and a clear image can be shot through rapid adjustment, so that the defect detection result is more accurate. The shooting detection principle of other detection points is the same as above, and will not be described in detail here.
S203: and controlling the photographing device to photograph an initial image of each detection point on the second detection channel based on the second photographing height between the photographing device and each detection point on the second detection channel.
And adjusting the distance between the shooting equipment and the first detection point on the second detection channel to be a second shooting height, controlling the shooting equipment to shoot the first detection channel of the second detection channel and acquire an initial image of the first detection point of the second detection channel, performing subsequent definition processing after the initial image acquisition is completed, adjusting the final shooting height of the shooting equipment and the first detection point of the second detection channel according to the definition, and acquiring a clear image of the first detection point of the second detection channel by the shooting equipment based on the final shooting height. And moving the shooting equipment to a second detection point of the second detection channel to finish the operation, wherein the shooting modes of the detection points of the other detection channels are the same as the above.
S204: and adjusting the second shooting height by utilizing the definition of the initial image, and acquiring the final shooting height between the shooting equipment and each detection point on the second detection channel.
In one possible implementation manner, the acquired initial image may be subjected to sharpness calculation to obtain a first sharpness, a first distance difference is calculated according to a difference between the first sharpness and a median value of sharpness, and the second shooting height is adjusted according to the first distance difference, so that a final shooting height between the shooting device and each detection point on the second detection channel may be obtained. Therefore, the method and the device can replace a ranging sensor through simple calculation, and save cost under the condition of guaranteeing that the shot image is clear.
In another possible implementation manner, the corresponding relation between the clear difference value and the standard distance difference may be stored in a corresponding relation table in advance, the difference value between the first definition and the median value of the definition is calculated, after the clear difference value is obtained, the first distance difference is directly found in the corresponding relation table of the corresponding relation between the clear difference value and the standard distance difference, and then the second shooting height is adjusted according to the first distance difference, so that the final shooting height between the shooting device and each detection point on the second detection channel may be obtained. Furthermore, the processing speed is increased through the table lookup operation, and shooting can be completed under the motion state of shooting equipment.
In the embodiment of the application, according to the final shooting height, the shooting device is controlled to shoot a clear image of each detection point on the second detection channel.
Therefore, the shooting distance of the current detection channel can be initially adjusted through the shooting distance of the last detection channel, and the shooting distance is adjusted in advance. And the shot lens has a certain depth of field, even if the shooting distance needs to be adjusted, the shooting distance needs to be finely adjusted, and the adjustment action can be rapidly completed. And further, the definition of each image shooting can be ensured, so that the accuracy of a defect detection result is improved.
Referring to fig. 3, the schematic diagram of an image capturing device according to an embodiment of the present application includes at least: an acquisition module 301, a first determination module 302, a first shooting module 303, and a second determination module 304.
An acquiring module 301, configured to acquire a first shooting height between the shooting device and each detection point on the first detection track;
a first determining module 302, configured to determine a second photographing height between the photographing apparatus and each of the detection points on the second detection lane according to the first photographing height between the photographing apparatus and each of the detection points on the first detection lane;
a first photographing module 303, configured to control the photographing apparatus to photograph an initial image of each detection point on the second detection lane based on a second photographing height between the photographing apparatus and each detection point on the second detection lane;
the second determining module 304 is configured to adjust the second shooting height by using the sharpness of the initial image, and obtain a final shooting height between the shooting device and each detection point on the second detection track.
Optionally, the image capturing apparatus further includes:
and the second shooting module is used for controlling the shooting equipment to shoot clear images of each detection point on the second detection channel according to the final shooting height.
Optionally, the second determining module includes:
the first computing unit is used for computing the definition of the initial image to obtain first definition;
obtaining a first distance difference according to a difference value between the first definition and a median value of a definition threshold, wherein the median value of the definition threshold is a median value of the first definition threshold and a second definition threshold, and the second definition threshold is larger than the first definition threshold;
and determining the final shooting height according to the first distance difference.
Optionally, obtaining the first distance difference according to the difference between the first sharpness and the sharpness threshold median value includes:
calculating the difference value between the first definition and the median value of the definition threshold to obtain a definition difference value;
and obtaining a first distance difference according to the corresponding relation between the clear difference and the standard distance difference.
The application discloses an image shooting device, an acquisition module 301, which is used for acquiring a first shooting height between shooting equipment and each detection point on a first detection channel; a first determining module 302, configured to determine a second photographing height between the photographing apparatus and each of the detection points on the second detection lane according to the first photographing height between the photographing apparatus and each of the detection points on the first detection lane; a first photographing module 303, configured to control the photographing apparatus to photograph an initial image of each detection point on the second detection lane based on a second photographing height between the photographing apparatus and each detection point on the second detection lane; the second determining module 304 is configured to adjust the second shooting height by using the sharpness of the initial image, and obtain a final shooting height between the shooting device and each detection point on the second detection track. Therefore, the shooting distance of the current detection channel can be initially adjusted through the shooting distance of the last detection channel, and the shooting distance is adjusted in advance. And the shot lens has a certain depth of field, even if the shooting distance needs to be adjusted, the shooting distance needs to be finely adjusted, and the adjustment action can be rapidly completed. And further, the definition of each image shooting can be ensured, so that the accuracy of a defect detection result is improved.
It should be noted that, the modules described in the embodiments of the present application may be implemented by software, or may be implemented by hardware. The name of the module is not limited to the module itself in some cases, and for example, the acquisition module may also be described as "a module that acquires certificate information of a target user".
The functions described above herein may be performed, at least in part, by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that may be used include: a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), an Application Specific Standard Product (ASSP), a system on a chip (SOC), a Complex Programmable Logic Device (CPLD), and the like.
As shown in fig. 4, the present embodiment provides a computer readable medium 400 having stored thereon a computer program 411, which computer program 411, when executed by a processor, implements the steps of the image capturing method described above in fig. 2.
It should be noted that in the context of this application, a machine-readable medium may be a tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. The machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
It should be noted that the machine-readable medium described in the present application may be a computer-readable signal medium or a computer-readable storage medium, or any combination of the two. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples of the computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In the present application, however, a computer-readable signal medium may include a data signal that propagates in baseband or as part of a carrier wave, with the computer-readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: electrical wires, fiber optic cables, RF (radio frequency), and the like, or any suitable combination of the foregoing.
The computer readable medium may be contained in the electronic device; or may exist alone without being incorporated into the electronic device.
Referring to fig. 5, fig. 5 is a schematic diagram of a hardware structure of a server according to an embodiment of the present application, where the server 500 may have a relatively large difference due to configuration or performance, and may include one or more central processing units (central processing units, CPU) 522 (e.g., one or more processors) and a memory 532, and one or more storage media 530 (e.g., one or more mass storage devices) storing application programs 540 or data 444. Wherein memory 532 and storage medium 530 may be transitory or persistent. The program stored in the storage medium 530 may include one or more modules (not shown), each of which may include a series of instruction operations on a server. Still further, the central processor 522 may be configured to communicate with a storage medium 530 and execute a series of instruction operations in the storage medium 530 on the server 500.
The server 500 may also include one or more power supplies 526, one or more wired or wireless network interfaces 550, one or more input/output interfaces 558, and/or one or more operating systems 541, such as Windows ServerTM, mac OS XTM, unixTM, linuxTM, freeBSDTM, etc.
The steps performed by the image capturing method in the above-described embodiment may be based on the server structure shown in fig. 5.
It should also be noted that, according to an embodiment of the present application, the process of the image capturing method described in the flowchart of fig. 2 may be implemented as a computer software program. For example, embodiments of the present application include a computer program product comprising a computer program embodied on a non-transitory computer readable medium, the computer program comprising program code for performing the method shown in the flow diagram of fig. 2 described above.
Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are example forms of implementing the claims.
While several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of the present application. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination.
The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the disclosure referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the disclosure. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.
Claims (11)
1. An image capturing method, the method being applied to an image capturing apparatus connected to the image capturing apparatus, the method comprising:
acquiring a first shooting height between the shooting equipment and each detection point on a first detection channel;
determining a second shooting height between the shooting equipment and each detection point on a second detection channel according to the first shooting height between the shooting equipment and each detection point on the first detection channel;
controlling the shooting equipment to shoot an initial image of each detection point on a second detection channel based on a second shooting height between the shooting equipment and each detection point on the second detection channel;
and adjusting the second shooting height by utilizing the definition of the initial image, and acquiring the final shooting height between the shooting equipment and each detection point on the second detection channel.
2. The method as recited in claim 1, further comprising:
and controlling the shooting equipment to shoot clear images of each detection point on the second detection channel according to the final shooting height.
3. The method of claim 1, wherein adjusting the second photographing height using the sharpness of the initial image to obtain a final photographing height between the photographing apparatus and each of the detection points on the second detection lane, comprises:
calculating the definition of the initial image to obtain a first definition;
obtaining a first distance difference according to the difference value between the first definition and the median value of the definition threshold, wherein the median value of the definition threshold is the median value of a first definition threshold and a second definition threshold, and the second definition threshold is larger than the first definition threshold;
and determining the final shooting height according to the first distance difference.
4. A method according to claim 3, wherein said deriving a first distance difference from a difference between said first sharpness and a median sharpness threshold comprises:
calculating the difference value between the first definition and the median value of the definition threshold to obtain a definition difference value;
and obtaining a first distance difference according to the corresponding relation between the clear difference and the standard distance difference.
5. A method according to claim 3, wherein the correspondence between the sharpness difference and the standard distance difference is pre-stored in a correspondence table.
6. The method of claim 1, wherein the second photographing height between the photographing device and each of the inspection points on the second inspection lane is the same as the first photographing height between the photographing device and each of the inspection points on the first inspection lane.
7. The method of claim 1, wherein the second detection lane is parallel to the first detection lane.
8. The method of claim 1, wherein each detection point of the first detection lane is on a same line perpendicular to the first detection lane as a corresponding detection lane of the second detection lane.
9. An apparatus for image capturing, the apparatus being applied to an image capturing device, the image capturing device being connected to a capturing device, the method comprising:
the acquisition module is used for acquiring a first shooting height between the shooting equipment and each detection point on the first detection channel;
the first determining module is used for determining a second shooting height between the shooting equipment and each detection point on the second detection channel according to the first shooting height between the shooting equipment and each detection point on the first detection channel;
the first shooting module is used for controlling the shooting equipment to shoot an initial image of each detection point on the second detection channel based on a second shooting height between the shooting equipment and each detection point on the second detection channel;
and the second determining module is used for adjusting the second shooting height by utilizing the definition of the initial image and acquiring the final shooting height between the shooting equipment and each detection point on the second detection channel.
10. An image capturing apparatus, characterized by comprising: a memory and a processor;
the memory is used for storing programs;
the processor being adapted to execute the program to carry out the steps of the method according to any one of claims 1 to 8.
11. An image capturing readable storage medium, characterized in that the computer readable storage medium has stored therein a computer program which, when executed by a processor, implements the steps of the method according to any of claims 1 to 8.
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