Working method, image acquisition device, electronic equipment and medium

Abstract

The invention discloses a working method, an image acquisition device, electronic equipment and a medium, and relates to the field of machine vision. The working method comprises the following steps: starting a cursor module, and acquiring a first cursor by using image acquisition equipment except an image acquisition device so as to adjust the focal length of a lens according to the definition of the first cursor; closing the cursor module, and acquiring an image of the surface of the detected object by using the image acquisition device so as to detect information of the surface of the detected object after the focal length adjustment of the lens is completed; wherein the image acquisition device comprises a cursor module, an image sensor, a beam splitter and a lens; the beam splitter equally divides the included angle between the cursor module and the image sensor, so that the distance between any point in the beam splitter and the cursor module and the distance between any point in the beam splitter and the image sensor are the same. Based on the above processing, when the definition of the first cursor meets the requirement, it is indicated that the surface of the measured object is within the focal length range of the image acquisition device, the image sensor completes focusing, the size of the image acquisition device can be reduced, and subsequent installation and use are facilitated.

Description

Technical Field

[0001] The present invention belongs to the field of machine vision, and in particular relates to a working method, a mapping device, an electronic device and a medium. Background Art

[0002] The image acquisition device is an electronic module capable of capturing images, installed within an imaging device. For example, in industrial cameras, the objects being measured are often in high-speed motion during use. Furthermore, given the high precision required for test results, the resolution of images generated by industrial cameras is relatively high. Therefore, a transmission line is required to connect to a host computer to ensure high-speed transmission of image data generated by the working camera, meeting the requirements of these application scenarios.

[0003] After the industrial camera is connected to the host computer through a transmission line, during the fixed installation process, the user generally uses the host computer to check the sharpness of the image captured by the industrial camera to determine whether it is in clear focus.

[0004] However, in some application scenarios, the space available for installing both the industrial camera and the host computer is limited, requiring only the industrial camera to be installed while the host computer is located further away. In such cases, due to the distance between the host computer and the industrial camera, focusing the industrial camera via the host computer requires the coordination of multiple personnel, which is somewhat inconvenient.

[0005] Therefore, there is an urgent need for a working method that can focus without using the images collected by the image collection device itself while ensuring that the image collection device can collect images normally. Summary of the Invention

[0006] The present application proposes a working method, an image acquisition device, an electronic device and a medium, which can focus without relying on the images acquired by the image acquisition device while ensuring normal image acquisition by the image acquisition device.

[0007] To achieve the above objectives, this application proposes the following technical solutions: In a first aspect of the present application, a working method of a mapping device is provided, the working method comprising: Turning on the cursor module, using an image acquisition device other than the image acquisition device to acquire a first cursor, and adjusting the focus of the lens according to the clarity of the first cursor; Turning off the cursor module, and using the image acquisition device to acquire an image of the surface of the object to be measured, so as to detect information on the surface of the object to be measured after completing the focus adjustment of the lens; In which, the image acquisition device includes a cursor module, an image sensor, a beam splitter and a lens; the beam splitter evenly divides the angle between the cursor module and the image sensor so that the distance from any point in the beam splitter to the cursor module and the image sensor is the same; the first cursor represents a cursor pattern emitted by the cursor module, passing through the beam splitter and the lens and falling on the surface of the object to be measured.

[0008] Optionally, when the angle between the cursor module and the image sensor is a right angle, the cursor module / the image sensor is parallel to the lens.

[0009] Optionally, when the cursor module is parallel to the lens, the light beam emitted by the cursor module is transmitted to the lens through the beam splitter, and the light beam reflected from the surface of the object to be measured is focused by the lens and then reflected to the image sensor through the beam splitter.

[0010] Optionally, when the image sensor is parallel to the lens, the light beam emitted by the cursor module is reflected by the beam splitter to the lens for focusing, and the light beam reflected by the surface of the object is focused by the lens and then transmitted through the beam splitter to the image sensor.

[0011] Optionally, the cursor module is composed of multiple lights; the maximum horizontal distance between two lights in the multiple lights is the same as the length of the image sensor, and the maximum vertical distance between two lights is the same as the width of the image sensor.

[0012] Optionally, the pattern in the first cursor is formed by connecting wires in the lamp shielding the light-emitting chip in the lamp.

[0013] Optionally, based on the edge position of the first cursor on the surface of the object to be measured, the field of view range of the imaging device on the surface of the object to be measured is determined.

[0014] In a second aspect of the present application, there is provided an image acquisition device, comprising an image sensor; lens; A beam splitter is provided between the image sensor and the cursor module to evenly divide the angle between the image sensor and the cursor module so that the distances from any point on the beam splitter to the cursor module and the image sensor are the same; A cursor module, configured to provide a cursor pattern, is activated during the lens focus adjustment process to capture a first cursor using an image acquisition device other than the image acquisition device, and adjust the lens focus according to the clarity of the first cursor; and is deactivated during the image acquisition process of the image acquisition device to acquire an image of the surface of the object being measured using the image sensor; The first cursor represents a cursor pattern emitted by the cursor module, passing through the beam splitter and the lens and landing on the surface of the object to be measured.

[0015] In a third aspect of the present application, an electronic device is provided, comprising a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other via the communication bus; Memory for storing computer programs; The processor is used to implement the working method as described in any one of the first aspects when executing the program stored in the memory.

[0016] In a fourth aspect of the present application, a computer-readable storage medium is provided, in which a computer program is stored. When the computer program is executed by a processor, the working method as described in any one of the first aspects is implemented.

[0017] The beneficial effects of this application are as follows: The present application provides a working method of a mapping device, the working method comprising: Turning on the cursor module, using an image acquisition device other than the image acquisition device to acquire a first cursor, and adjusting the focus of the lens according to the clarity of the first cursor; Turning off the cursor module, and using the image acquisition device to acquire an image of the surface of the object to be measured, so as to detect information on the surface of the object to be measured after completing the focus adjustment of the lens; In which, the image acquisition device includes a cursor module, an image sensor, a beam splitter and a lens; the beam splitter evenly divides the angle between the cursor module and the image sensor so that the distance from any point in the beam splitter to the cursor module and the image sensor is the same; the first cursor represents a cursor pattern emitted by the cursor module, passing through the beam splitter and the lens and falling on the surface of the object to be measured.

[0018] Based on the above processing, since the beam splitter evenly divides the angle between the cursor module and the image sensor, and the distance from any point in the beam splitter to the cursor module and the image sensor is the same, it is ensured that the optical path distance of the light beam emitted from the cursor module after transmission / reflection through the beam splitter to the lens is the same as the optical path distance of the light beam emitted from the lens after reflection / transmission through the beam splitter to the image sensor. Therefore, the optical path of the first cursor from the cursor module to the surface of the object to be measured is equivalent to the optical path of the reflected light from the surface of the object to be measured to the image sensor. When the clarity of the first cursor meets the requirements, it indicates that the surface of the object to be measured is within the focal length range of the imaging device, that is, the image sensor has completed focusing.

[0019] In addition, the imaging device provided in the present application utilizes the basic characteristics of transmission and refraction of the beam splitter. On the basis of ensuring that the optical paths from the cursor module to the lens and from the image sensor to the lens are equal, the cursor module and the image sensor do not need to be set on the same plane. Instead, an angle (such as a right angle) is set between the two, thereby reducing the size of the imaging device and facilitating subsequent installation and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 This is a flowchart of a working method of a mapping device provided by the present application; Figure 2 This is an equivalent schematic diagram of the position of a sensor and cursor module provided by this application; Figure 3 This is a schematic diagram of an LED cursor corresponding to a shooting position provided by this application; Figure 4 This is a structural diagram of an electronic device provided by this application. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0022] When an industrial camera is actually used, it needs to be installed in a fixed position first. The user needs to use a computer or host computer software to capture images in real time, observe whether the image generated by the industrial camera is correct and the edge sharpness, and confirm whether the camera shooting position and focus are accurate.

[0023] However, when the host computer and the industrial camera are far apart, focusing the industrial camera through the host computer requires the cooperation of multiple people, which is somewhat inconvenient.

[0024] Therefore, there is an urgent need for a working method for an image acquisition device, which can focus without using the images acquired by the image acquisition device itself while ensuring that the image acquisition device can acquire images normally.

[0025] In order to solve the above problems, this application provides a working method, such as Figure 1 As shown, the following steps are included: S1. Turn on the cursor module and use an image acquisition device other than the image acquisition device to acquire a first cursor, so as to adjust the focus of the lens according to the clarity of the first cursor.

[0026] S2. Turn off the cursor module and use the image acquisition device to obtain an image of the surface of the object to be measured, so as to detect information of the surface of the object to be measured after completing the focus adjustment of the lens.

[0027] In which, the image acquisition device includes a cursor module, an image sensor, a beam splitter and a lens; the beam splitter evenly divides the angle between the cursor module and the image sensor so that the distance from any point in the beam splitter to the cursor module and the image sensor is the same; the first cursor represents a light spot emitted by the cursor module, passing through the beam splitter and the lens and falling on the surface of the object to be measured.

[0028] Based on the above processing, since the beam splitter evenly divides the angle between the cursor module and the image sensor, and the distance from any point in the beam splitter to the cursor module and the image sensor is the same, it is ensured that the optical path distance of the light beam emitted from the cursor module after transmission / reflection through the beam splitter to the lens is the same as the optical path distance of the light beam emitted from the lens after reflection / transmission through the beam splitter to the image sensor. Therefore, the optical path of the first cursor from the cursor module to the surface of the object to be measured is equivalent to the optical path of the reflected light from the surface of the object to be measured to the image sensor. When the clarity of the first cursor meets the requirements, it indicates that the surface of the object to be measured is within the focal length range of the imaging device, that is, the image sensor has completed focusing.

[0029] In addition, the imaging device provided in the present application utilizes the basic properties of transmission and refraction of the beam splitter. On the basis of ensuring that the optical paths from the cursor module to the lens and from the image sensor to the lens are equal, the cursor module and the image sensor do not need to be set on the same plane. Instead, an angle (such as a right angle) is set between the two, thereby reducing the size of the imaging device.

[0030] In some embodiments, the angle between the cursor module and the image sensor is represented by the angle formed between the surface on which the cursor module is located and the surface on which the image sensor is located. This angle is generally equal to or greater than 90° (i.e., a right angle or an obtuse angle). Furthermore, the angle between the cursor module or image sensor is defined as the angle between virtual extended planes of the surfaces on which the cursor module or image sensor is located. That is, the extended plane of the cursor module or image sensor does not intersect the actual space of another object, to ensure that after the beam splitter evenly divides the aforementioned angle, the distance between any point and the two is the same.

[0031] It is understood that in the working solution provided in this application, the distances between the first optical path and the second optical path are equal. The first optical path represents the optical path formed when the light beam is emitted from the cursor module and reflected / transmitted through the beam splitter to the lens, while the second optical path represents the optical path formed when the light beam exits the lens and is transmitted / reflected through the beam splitter to the image sensor.

[0032] like Figure 2 As shown, the cursor LED represents an LED light that can emit a cursor pattern (ie, the first cursor of the present application), which is the cursor module of the present application, and the sensor is the image sensor of the present application. Figure 2In the figure, the angle between the surface where the cursor LED is located and the surface where the image sensor is located is 90°, and the beam splitter is placed in the middle with a difference of 45° between the two. The distance between the cursor LED and the image sensor and the beam splitter is equal, and the optical paths between the two and the surface of the object to be measured are also equivalent.

[0033] A beam splitter is an optical component primarily used to split an incident light beam into two or more beams. In the technical solution provided in this application, the beam splitter is typically a planar beam splitter, made from an optical flat plate (such as glass). It utilizes a surface coating (such as a semi-reflective coating) to reflect and transmit the light beam, effectively splitting the beam into reflected and transmitted light in a specific ratio.

[0034] like Figure 2 As shown, the beam splitter has a transmittance of 10% and a reflectivity of 90%. The lens is positioned below the cursor LED and parallel to the surface where the cursor LED resides. The beam splitter splits the light beam into reflected and projected light in a specific ratio, not limited to 1:9 or 2:8. This ratio only needs to ensure that the first cursor can clearly image the surface of the object being measured and that the image generated by the image sensor meets the requirements of the image acquisition device.

[0035] In some embodiments, when the angle between the cursor module and the sensor is right, the cursor module / sensor is parallel to the lens. When the cursor module is parallel to the lens, the light beam emitted by the cursor module is transmitted through the beam splitter to the lens, while the light beam reflected from the surface of the object being measured is focused by the lens and then reflected by the beam splitter to the image sensor. When the image sensor is parallel to the lens, the light beam emitted by the cursor module is reflected through the beam splitter to the lens for focus, while the light beam reflected from the surface of the object being measured is focused by the lens and then transmitted through the beam splitter to the image sensor.

[0036] Based on the above processing, by separating the cursor module and the image sensor on the same plane and placing them at a 90-degree angle, the cursor module utilizes a beam splitter to achieve an equivalent distance to the image sensor relative to the surface of the object being measured, thereby effectively reducing the size of the imaging device and increasing its scope of application. In the technical solution provided by Chinese patent CN117294921A, the cursor LEDs are positioned on both sides of the pattern sensor, which necessitates increasing the size of the structural components of the imaging device. Compared to the technical solution provided by this application, the size is not only larger, limiting its scope of application, but also the first cursor projection position is inconsistent with the actual shooting position and direction of the imaging device, affecting focusing accuracy.

[0037] In some embodiments, the cursor module is composed of multiple lights, wherein the maximum horizontal distance between two lights in the multiple lights is equal to the length of the image sensor, and the maximum vertical distance between two lights in the multiple lights is equal to the width of the image sensor.

[0038] In one implementation, the field of view of the imaging device is determined based on the edge position of the first cursor on the surface of the object to be measured.

[0039] In actual work, Figure 3 As shown in FIG, the image acquisition device is composed of a camera structure and a lens, wherein the cursor LED, image sensor and beam splitter are arranged in the camera structure. Figure 2 For example, the corresponding imaging device is a line array camera. The cursor module of the camera structure has three LED cursors in the middle row. The positions of the first cursor on the surface of the measured object are equivalent to the middle and ends of the image sensor's field of view. Based on the above processing, the edge position of the first cursor can be directly marked to indicate the imaging device's field of view and pixel array direction, eliminating the need to view the image captured by the imaging device through the host computer.

[0040] In some embodiments, when the mapping device is an area array camera, the number of LED lights in the corresponding cursor module can be 2, and the position of the first cursor corresponds to the two diagonals of the hypotenuse in the field of view; the number of LED lights in the cursor module can also be 3, and the first cursor is distributed in a triangular area, the base of the triangle is the length of the field of view, and the height of the triangular area is the width of the field of view; the number of LED lights in the cursor module can also be 4, and the four points where the first cursor is distributed are the four vertex corners of the field of view.

[0041] In the solution provided by Chinese patent CN117294921A, the cursor device is set on both sides of the image sensor. The cursor projection position is inconsistent with the actual shooting position and direction of the image acquisition device. During the focusing process, it is still necessary to use the host computer to view the image captured by the image acquisition device itself for confirmation. Compared with the existing technology, the technical solution provided by this application uses a beam splitter to achieve an equivalent distance between the cursor module and the image sensor compared to the surface of the object being measured. The size of the LED cursor on both sides is the same as the photosensitive surface of the image sensor, ensuring that the cursor projection position is consistent with the actual shooting position and direction of the image acquisition device. The coverage area of ​​the cursor is used to identify the shooting range and position of the image sensor.

[0042] In some embodiments, the pattern within the first cursor is formed by the light-emitting chip within the lamp being blocked by the connecting wires within the lamp. Specifically, the LED lamp utilizes the pattern of the gold wires (i.e., metal wires or connecting wires) within the lamp, and only a very small amount of light is required to form the first cursor.

[0043] In the solution provided by Chinese patent CN117294921A, the light source emits light outward using a cross-shaped opening on the light source structure, and the position of the opening is parallel to the photosensitive surface of the image sensor. When the structure transmits light through the lens and forms a clear image on the surface of the object being measured, the photosensitive surface of the image sensor is also successfully focused. However, in the above method, the LED lamp requires a relatively large light intensity, has high power consumption, and is difficult to dissipate heat. Therefore, compared with the prior art, in the technical solution provided by the present application, the cursor module is based on the characteristics that the gold wire inside the LED lamp does not emit light but the chip emits light. In the process of adjusting the focal length of the lens, the shape of the gold wire itself is used to form a cursor pattern that is luminous as a whole but has clear patterns and lines inside. The LED imaging surface is modified from the light-emitting penetrating structural surface to the pattern of the gold wire of the imaging LED lamp itself, which greatly reduces the power consumption of the cursor module.

[0044] With respect to step S1, during the lens focal length adjustment process, other components within the imaging device, such as the image sensor, other than the cursor module, may be turned off to reduce the device's power consumption during the focusing process. Furthermore, the imaging device other than the imaging device in step S1 refers to an electronic device, other than the imaging device, that is used to capture the first cursor and determine its clarity. Furthermore, during the lens focal length adjustment process, the distance between the lens and the surface of the object being measured is adjusted based on the clarity of the first cursor until the clarity of the first cursor meets preset requirements.

[0045] In one implementation, the person installing the imaging device observes the clarity and spot position of the first cursor and actively adjusts the distance between the lens and the surface of the object to be measured until the position of the first cursor meets the detection requirements and the image edge of the first cursor is clear and sharp. The process of adjusting the lens focal length is completed.

[0046] by Figure 3 For example, in the actual work process, the person who installs the imaging equipment installs the imaging equipment to the predetermined position, turns on the LED cursor, and then rotates the lens to adjust the focus, while observing the positions of the three cursors and the clarity of the cursor pattern. When the cursor position meets the surface position requirements of the object to be measured and the clarity and sharpness of the cursor pattern edge meet the preset requirements, the process of adjusting the lens focus is completed and the imaging equipment can be used normally.

[0047] For step S2, during the operation of the image acquisition device, the cursor module is turned off and the working mode of the image sensor is turned on. The reflected light from the surface of the object to be measured is focused by the lens onto the beam splitter and then transmitted / reflected to the photosensitive surface of the image sensor, thereby generating an image of the surface of the object to be measured for detecting information on the surface of the object to be measured.

[0048] by Figure 2For example, the transmittance of the beam splitter is 10%, and the lens is parallel to the cursor module and is directly below the camera structure. When adjusting the focal length of the lens, turn on the LED light, and the pattern generated by the LED light passes through the beam splitter and is focused by the lens, and then falls on the surface of the object to be measured, forming the first cursor. When the lens focusing is completed, during the actual use of the image acquisition device, turn off the LED light, and the light reflected from the surface of the object to be measured is focused by the lens, and then 90% of the light is reflected on the beam splitter to the photosensitive surface of the image sensor, forming an image of the surface of the object to be measured, which is then transmitted to the host computer via a data line for detecting information on the surface of the object to be measured.

[0049] It is worth noting that, compared to the prior art, in the technical solution provided by this application, the cursor module and the image sensor are not turned on at the same time. That is, during the process of adjusting the focal length of the lens, only the cursor module needs to be turned on, and there is no need to collect images through the image sensor of the image acquisition device. In the absence of a host computer, the clarity of the first cursor can be checked in real time to determine whether the focus is clear, the landing point of the first cursor can be used to confirm the position of the image acquisition device, and the edge position of the first cursor can be used to confirm the field of view of the image acquisition device. During the use of the image acquisition device, the image acquisition device is used to detect information on the surface of the object being measured, and there is no need to increase the brightness of the surface of the object being measured through the cursor module. The first cursor generated by the cursor module will affect the acquisition of information on the surface of the object being measured, so the cursor module needs to be turned off.

[0050] In some embodiments, the present application further provides an image acquisition device, including an image sensor; lens; A beam splitter is provided between the image sensor and the cursor module to evenly divide the angle between the image sensor and the cursor module so that the distances from any point on the beam splitter to the cursor module and the image sensor are the same; A cursor module, configured to provide a cursor pattern, is activated during the lens focus adjustment process to capture a first cursor using an image acquisition device other than the image acquisition device, and adjust the lens focus according to the clarity of the first cursor; and is deactivated during the image acquisition process of the image acquisition device to acquire an image of the surface of the object being measured using the image sensor; The first cursor represents a cursor pattern emitted by the cursor module, passing through the beam splitter and the lens and landing on the surface of the object to be measured.

[0051] The present application also provides an electronic device, such as Figure 4 As shown, it includes a processor 401, a communication interface 402, a memory 403 and a communication bus 404, wherein the processor 401, the communication interface 402, and the memory 403 communicate with each other through the communication bus 404. Memory 403, used for storing computer programs; The processor 401 is configured to implement any of the above working methods when executing the program stored in the memory 403 .

[0052] The communication bus mentioned in the electronic devices mentioned above may be a Peripheral Component Interconnect (PCI) bus or an Extended Industrial Standard Architecture (EISA) bus. This communication bus can be divided into address buses, data buses, and control buses. For ease of illustration, the figure uses only a single thick line, but this does not mean that there is only one bus or only one type of bus.

[0053] The communication interface is used for communication between the above electronic device and other devices.

[0054] The memory may include random access memory (RAM) or non-volatile memory (NVM), such as at least one disk storage. Alternatively, the memory may be at least one storage device located away from the processor.

[0055] The above-mentioned processor can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0056] In another embodiment provided in the present application, a computer-readable storage medium is further provided, in which a computer program is stored. When the computer program is executed by a processor, any of the above-mentioned working method steps is implemented.

[0057] In another embodiment provided by the present application, a computer program product including instructions is also provided, which, when executed on a computer, enables the computer to execute any one of the steps of the working method in the above embodiments.

[0058] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A working method, characterized in that: The working method comprises: Turning on the cursor module, using an image acquisition device other than the image acquisition device to acquire a first cursor, so as to adjust the focal length of the lens according to the clarity of the first cursor; Turning off the cursor module, and using the image acquisition device to acquire an image of the surface of the object to be measured, so as to detect information on the surface of the object to be measured after the focal length of the lens is adjusted; Among them, the image acquisition device includes a cursor module, an image sensor, a beam splitter and a lens; the beam splitter evenly divides the angle between the cursor module and the image sensor so that the distance from any point in the beam splitter to the cursor module and the image sensor is the same; the first cursor represents a cursor pattern emitted by the cursor module, passing through the beam splitter, the lens and falling on the surface of the object to be measured.

2. The working method according to claim 1, characterized in that: When the included angle between the cursor module and the image sensor is a right angle, the cursor module / the image sensor is parallel to the lens.

3. The working method according to claim 2, characterized in that: When the cursor module is parallel to the lens, the light beam emitted by the cursor module is transmitted to the lens through the beam splitter, and the light beam reflected from the surface of the object is focused by the lens and then reflected to the image sensor through the beam splitter.

4. The working method according to claim 2, characterized in that: When the image sensor is parallel to the lens, the light beam emitted by the cursor module is reflected by the beam splitter to the lens for focusing, while the light beam reflected by the surface of the object is focused by the lens and then transmitted to the image sensor through the beam splitter.

5. The working method according to claim 1, characterized in that: The cursor module is composed of multiple lights; the maximum horizontal distance between two lights in the multiple lights is the same as the length of the image sensor, and the maximum vertical distance is the same as the width of the image sensor.

6. The working method according to claim 5, characterized in that: The pattern in the first cursor is formed by the connecting wires in the lamp shielding the light-emitting chip in the lamp.

7. The working method according to claim 5, characterized in that: Based on the edge position of the first cursor on the surface of the object to be measured, the field of view range of the imaging device on the surface of the object to be measured is determined.

8. A map collecting device, characterized in that: include: Image sensor; Lens; A beam splitter is arranged between the image sensor and the cursor module to equally divide the angle between the image sensor and the cursor module so that the distances from any point in the beam splitter to the cursor module and the image sensor are the same; The cursor module is used to provide a cursor pattern, which is turned on during the adjustment process of the lens focal length so as to collect a first cursor using an image collecting device other than the image collecting device, and adjust the lens focal length according to the clarity of the first cursor; and is turned off during the image collecting process of the image collecting device so as to obtain an image of the surface of the object to be measured using the image sensor; The first cursor refers to a cursor pattern emitted by the cursor module, passing through the beam splitter and the lens and falling on the surface of the object to be measured.

9. An electronic device, characterized in that: It includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other through the communication bus; Memory, used to store computer programs; A processor, for implementing the working method described in any one of claims 1 to 7 when executing a program stored in a memory.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the working method described in any one of claims 1 to 7 is implemented.

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