CN108345812A - A scanning positioning method, device, equipment and system - Google Patents

Abstract

The embodiment of the specification discloses a scanning positioning method, a device, equipment and a system, which are used for generating a digital object identifier for a scanning end to identify; starting a camera to scan a scanning end with a positioning identifier based on the generated digital object identifier to obtain a scanned image; and determining the relative position of the digital object identifier and the scanning field of view of the scanning end based on the imaging position and the preset position range of the positioning identifier in the scanning image, so that the scanning end scans the digital object identifier.

Description

A scanning positioning method, device, equipment and system

technical field

The present application relates to the field of computer technology, in particular to a scanning positioning method, device, equipment and system.

Background technique

With the development of mobile Internet technology, information exists in more diverse forms, such as editing information into Digital Object Identifier (Digital Object Identifier, abbreviation: DOI), using the scanning terminal to scan DOI, and obtain information after parsing.

In the current application scenario, according to the user's operating habits, the way of scanning the DOI generally includes: forward scanning and reverse scanning. The forward scanning means that the scanning end can display the scanned image on the user-facing screen while scanning the DOI, so that the user can quickly locate the DOI according to the scanned image. Reverse scanning means that the screen of the smart terminal displaying the DOI faces away from the user, while the screen faces the scanning end to display the DOI to the scanning end. At this time, the DOI is invisible to the user holding the smart terminal.

Therefore, the industry needs to provide a scanning positioning solution that can effectively locate the scanning end to improve user operating experience.

Contents of the invention

In view of this, the embodiments of the present application provide a scanning positioning method, device, device, and system that can effectively position the scanning end to improve user operating experience.

The embodiment of this description adopts the following technical solutions:

The embodiment of this specification provides a scanning positioning method, including:

Generate a digital object identifier for the scanner to recognize;

Based on the generated digital object identifier, start the camera to scan the scanning end with the positioning mark to obtain a scanned image;

Based on the imaging position and preset position range of the positioning mark in the scanned image, determine the relative position of the digital object identifier and the scanning field of view of the scanning end, so that the scanning end scans the digital object mark symbol.

The embodiment of this specification also provides a scanning positioning method, including:

The scanning end provides a positioning mark, so that the terminal providing the digital object identifier is positioned through the camera, and the relative position of the digital object identifier and the scanning field of view of the scanning end is determined;

A digital object identifier located within the scanned field of view is scanned.

The embodiment of this specification also provides a scanning positioning device, including:

A generating unit for generating a digital object identifier for identification by the scanning end;

The starting unit, based on the generated digital object identifier, starts the camera to scan the scanning end with the positioning mark to obtain a scanned image;

The determining unit is configured to determine the relative position of the digital object identifier and the scanning field of view of the scanning end based on the imaging position and the preset position range of the positioning mark in the scanning image, so that the scanning end scans the A digital object identifier.

The embodiment of this specification also provides an electronic device, including at least one processor and a memory, the memory stores a program, and is configured to perform the following steps by at least one processor:

Generate a digital object identifier for the scanner to recognize;

Based on the generated digital object identifier, start the camera to scan the scanning end with the positioning mark to obtain a scanned image;

Based on the imaging position and preset position range of the positioning mark in the scanned image, determine the relative position of the digital object identifier and the scanning field of view of the scanning end, so that the scanning end scans the digital object mark symbol.

The embodiment of this specification also provides a scanning positioning system, including: a scanning end and a scanned end, and the scanned end is used for:

Generate a digital object identifier for the scanner to recognize;

Based on the generated digital object identifier, start the camera to scan the scanning end with the positioning mark to obtain a scanned image;

Based on the imaging position and preset position range of the positioning mark in the scanned image, determine the relative position of the digital object identifier and the scanning field of view of the scanning end, so that the scanning end scans the digital object mark symbol.

The above at least one technical solution adopted in the embodiments of this specification can achieve the following beneficial effects:

Generate a digital object identifier for the scanning end to identify; based on the generated digital object identifier, start the camera to scan the scanning end with the positioning mark to obtain a scanned image; based on the imaging position and preset position range of the positioning mark in the scanned image , determine the relative position of the digital object identifier and the scanning field of view of the scanning end, so that the scanning end scans the digital object identifier. In practical applications, if the imaging position of the positioning mark in the scanned image falls within the preset position range, it can be determined that the digital object identifier DOI falls within the scanning field of view of the scanning end, allowing the user to maintain the position for the scanning end to identify DOI, prevent DOI shaking. Conversely, if the positioning mark is not recognized in the scanned image, part of the positioning mark is recognized, or the imaging position of the positioning mark in the scanned image does not fall within the preset position range, it can be determined that the DOI does not fall within the scanning field of view of the scanning end . In this case, the scanned end can prompt the user to adjust the position of the scanned end, or adjust its own position until the DOI falls into the scanning field of view of the scanning end, so as to achieve fast scanning and information acquisition, and improve user experience.

Description of drawings

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The schematic embodiments and descriptions of the application are used to explain the application and do not constitute an improper limitation to the application. In the attached picture:

FIG. 1 is a schematic structural diagram of a scanning positioning system provided by an embodiment of this specification;

FIG. 2 is a schematic diagram of the principle of a scanning positioning method provided by an embodiment of this specification;

FIG. 3 is a scanned image obtained by scanning the scanning end in a scanning positioning method provided by the embodiment of this specification;

FIG. 4 is a flow chart of a scanning positioning method provided by an embodiment of this specification;

FIG. 5 is a schematic diagram of the principle of a scanning positioning method provided in the first embodiment of this specification;

FIG. 6 is a first schematic diagram of a scanning positioning method provided in the second embodiment of this specification;

Fig. 7 is a schematic diagram 2 of a scanning positioning method provided in the second embodiment of this specification;

FIG. 8 is a schematic structural diagram of a scanning positioning device provided by an embodiment of this specification.

Detailed ways

An analysis of the existing technology found that when the DOI in the scanned terminal is within the scanning field of view of the scanning end, the scanning end can identify the DOI to obtain information, and at this time the scanning end can also be located within the field of view of the camera of the scanned terminal, and Further, the preset position range of the scanning end in the scanning image captured by the camera can be determined, so whether the DOI falls within the scanning field of view of the scanning end can be determined by positioning the scanning end.

Therefore, the embodiment of this specification provides a scanning positioning method, device, equipment and system. First, the scanned terminal generates a DOI for the scanning terminal to identify, and then based on the generated DOI, the camera is started to scan the scanning terminal with the positioning mark, wherein the positioning mark It is used to locate the position of the scanning end; then, based on the imaging position and preset position range of the positioning mark in the scanned image, determine the relative position of the DOI and the scanning field of view of the scanning end, so that the scanning end can scan the DOI. In practical applications, if the imaging position of the positioning mark in the scanned image falls within the preset position range, it can be determined that the DOI falls within the scanning field of view of the scanning end, allowing the user to maintain the position for the scanning end to identify the DOI. Conversely, if no positioning mark is recognized in the scanned image, part of the positioning mark is recognized, and the imaging position of the recognized positioning mark in the scanned image does not fall within the preset position range at least partly, it can be determined that the DOI does not fall into the scanned image. within the scanning field of view at the end. In this way, the scanned end can determine whether the scanning end can scan the DOI by locating the positioning mark, especially when it is determined that the DOI does not fall within the scanning field of view of the scanning end, the scanned end can prompt the user to adjust the position of the scanned end, or adjust From its own position to the DOI, it falls within the scanning field of view of the scanning end, achieving fast scanning and obtaining information, and improving user experience.

In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the specification and corresponding drawings. Apparently, the described embodiments are only some of the embodiments in this specification, not all of them. Based on the embodiments in this specification, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.

The technical solutions provided by each embodiment of this specification will be described in detail below in conjunction with the accompanying drawings.

Fig. 1 is a schematic structural diagram of a scanning positioning system provided by the embodiment of this specification, and Fig. 2 is a reference diagram of the working principle of the scanning positioning system provided by the embodiment of this specification, and combined references to Fig. 1 and Fig. 2 are shown below. The scanning positioning system includes:

The scanning end 101 and the scanned end 102, wherein the scanned end 102 is used for:

Generate a digital object identifier DOI 1020 identified by the scanner 101;

Based on the generated DOI 1020, start the camera 1021 to scan the scanning end 101 with the positioning mark 1010, and obtain the scanned image 1022 as shown in Figure 3;

Match the imaging position of the positioning mark 1010 in the scanned image 1022 with the preset position range to determine the relative position of the DOI 1020 and the scanning field of view of the scanning end 101 so that the scanning end 101 can scan the DOI 1020 .

Wherein, without affecting the scan end 101 to scan and identify the DOI 1020 , in the scan field of view of the scan end 101 , the DOI 1020 corresponds to the position of the scan end 101 , and may further correspond to the position of the positioning mark 1010 . When the distance between the camera 1021 in the scanned end 102 and the DOI 1020 is constant, referring to FIG. 3 , the imaging position of the positioning mark 1010 in the scanned image 1022 can be used to represent whether the DOI 1020 falls into the scanning of the scanned end 101. within the field of view.

Without affecting the scanning end 101 to identify the DOI 1020, the DOI 1020 can be directly opposite to the scanning end 101, or deviate from the opposite position within a certain deviation range, so the position of the DOI 1020 is predictable. Further, the preset position range of the positioning mark 1010 in the scanned image 1022 can be correspondingly obtained, so the preset position range of the positioning mark 1010 in the scanned image 1022 can be located without affecting the scanning identification DOI 1020 of the scanning end 101. The approximate imaged location of the identifier 1010 in the scanned image 1022 .

In practical applications, the positioning mark 1010 can be installed around the scanning terminal 102 , for example, a transparent film with the positioning mark 1010 can be attached for scanning and positioning by the scanned terminal 102 .

FIG. 4 is a schematic flowchart of a scanning and positioning method provided by the embodiment of this specification. As shown below, the execution subject of the scanning and positioning method is a smart terminal, such as a mobile phone, a tablet computer, etc., and no specific limitation is made here.

Step 401: Generate a DOI for the scanner to identify.

In practical applications, in the payment scene of passing through the subway gate or taking the bus, a payment code containing payment information can be generated for the scanning terminal to scan and identify; Generate a QR code containing movie ticket information; or, when shopping through an automatic vending machine, generate a payment code for the automatic vending machine to scan; etc., which are not specifically limited here.

In this embodiment of the specification, the DOI may be in the form of a two-dimensional code, a barcode, etc., which is not specifically limited here.

Step 403: Based on the generated DOI, start the camera to scan the scanning end with the positioning mark to obtain a scanned image.

In the embodiment of this specification, when a DOI is opened or a new DOI is generated, the scanned end immediately starts its own camera. When the DOI of the scanned end is displayed to the scanning end, the camera simultaneously scans the positioning mark of the scanning end to obtain a scanned image.

In practical applications, the camera may be a front camera of the scanned end. For example, smart terminals such as mobile phones and tablets all have their own front cameras to achieve the purpose of scanning and positioning signs.

In the embodiment of this specification, as shown in FIG. 1, if the positioning mark 1010 includes three first locators 1011, and the DOI 1020 includes three second locators 1023 corresponding to the positions of the first locators 1011, then when the camera is started Before 1021 scanning the scanning terminal 101 with the positioning identification 1010, the scanning positioning method also includes:

Based on the position correspondence relationship between the first locator 1011 and the second locator 1023 , a notification of the placement of the DOI 1020 is generated.

In the embodiment of this specification, the DOI 1020 may be a two-dimensional code, including second locators 1023 distributed on three corners, and the three second locators 1023 define the boundary of the two-dimensional code, and are used by the scanning end 101 to perform identify. Correspondingly, three first locators 1011 are configured corresponding to the three second locators 1023 , and are arranged in a triangle around the scanning end 101 . When the scanned end 102 is placed in a general position and the scanning end 101 is aligned so that the DOI 1020 can be scanned and identified, the positions of the three first locators 1011 and each second locator 1023 correspond to each other, which can be one by one Align or not much different. The general placement position can be understood as the normal placement state of the scanned end 102 when the scanning end 101 scans the code. For example, for a mobile phone, it means that the camera is placed on top.

In the embodiment of this specification, the number of first locators in the location identifier is not limited to three, the location identifier can include at least one first locator, the number of second locators in the DOI is not limited to three, and the DOI includes the first locator At least one second locator corresponding to the locator position. The position correspondence between the first locators and the second locators may mean that the number and arrangement of the first locators are the same as those of the second locators.

Therefore, the position placement notification is used to inform the user in advance of the correct placement of the scanned end, which can reduce the probability of readjusting the position of the scanned end. Among them, the location placement notification can be voice, light or vibration, and the voice prompt is more specific and accurate.

Step 405: Based on the imaging position of the positioning mark in the scanned image and the preset position range, determine the relative position of the DOI and the scanning field of view of the scanning end, so that the scanning end scans the DOI.

Wherein, if the imaging positions of the positioning marks in the scanned image are all within the preset position range, it is determined that the DOI falls within the scanning field of view of the scanning end, and the scanning end can scan and identify the DOI to read information therefrom;

If at least one of the following situations occurs, it is determined that the DOI does not fall within the scanning field of view of the scanning end:

At least part of the imaging position of the positioning mark in the scanned image is outside the preset position range;

Part of the positioning mark is recognized in the scanned image;

The positioning mark was not recognized in the scanned image.

In the embodiment of this specification, if the positioning mark includes at least one first locator, then based on the imaging position and preset position range of each first locator in the scanned image, the relative relationship between the DOI and the scanning field of view at the scanning end is determined. Location.

If the positioning mark includes at least two first locators, then when the imaging positions of all the first locators in the scanned image fall within the preset position range, it can be determined that the DOI falls within the scanning field of view of the scanning end; if If it is recognized that part of the number of first locators, or the imaging positions of part or all of the number of first locators in the scanned image are outside the preset position range, then it is determined that the DOI does not fall within the scanning field of view of the scanning end.

In the embodiment of this specification, when it is determined that the DOI does not fall within the scanning field of view of the scanning end, a position adjustment notification for the DOI may be generated, prompting the user to adjust the position of the scanned end until the imaging positions of the positioning marks in the scanned image are all within the predetermined position. within the set position range.

In the embodiment of this specification, when it is determined that the DOI does not fall within the scanning field of view of the scanning end, the scanned end can automatically control its own position adjustment, so that the imaging positions of the positioning marks in the scanned image are all within the preset position range.

In practical applications, the position adjustment notification may include at least one of voice, vibration, sound, and flash. After the user receives the position adjustment notification, the relative position between the DOI and the scanning end can be adjusted immediately.

In the embodiment of this specification, generating a DOI position adjustment notification may include:

Based on the direction of relocation of the DOI, a notification of relocation of the DOI is generated. In this way, the position adjustment notification includes the position adjustment direction, which can prompt the user to more precisely adjust the position of the scanned end generating the DOI, so that the DOI is located within the scanning field of view of the scanning end, so that the scanning end can read information from the DOI.

In the embodiment of this specification, when the position adjustment notification does not include the position adjustment direction, the user can also visually observe the approximate offset position of the scanned end from the scanning end based on the position adjustment notification, and quickly make adjustments.

In practical applications, the position adjustment direction may include at least one of the following:

At least one position adjustment direction (hereinafter referred to as the horizontal direction) parallel to the plane where the DOI is located. For a standing scanning end, such as a vending machine, it can be up, down, left, right, etc. For a flat scanning end , such as the subway gate can be front, back, left, right;

The position adjustment direction perpendicular to the plane where the DOI is located (hereinafter referred to as the vertical direction), for the standing scanning end, can be the front-back direction, and for the horizontal scanning end, it can be the up-down direction or slightly biased to the up-down direction.

In the embodiment of this specification, based on the DOI position adjustment direction, generating a DOI position adjustment notification may include:

If no positioning mark or part of the positioning mark is recognized in the scanned image, a position adjustment notice for the DOI is generated based on the position adjustment direction perpendicular to the plane where the DOI is located until all the positioning marks are recognized in the scanned image.

In practical applications, when the distance between the scanned end and the scanned end is close, the size of the positioning mark is enlarged, causing a part of the positioning mark to overflow the boundary of the camera's field of view in the scanned end, and the remaining part is scanned into the scanned image. In this case, a position adjustment notification may be generated in advance to promptly remind the user to adjust the position of the scanned end away from the scanning end in the vertical direction.

It should be noted that, in general, when the user brings the scanned end close to the scanned end, the DOI can be visually or observed to be basically aligned with the scanned end, but the distance between the scanned end and the scanned end (hereinafter referred to as the vertical distance) may vary depending on the It is blocked by the scanning end and is not easy to perceive. Therefore, the strategy provided by the embodiment of the present specification can timely determine the vertical distance between the scanned end and the scanning end, and remind the user to adjust.

In the embodiment of this specification, based on the DOI position adjustment direction, generating a DOI position adjustment notification may include:

If part of the positioning mark is recognized in the scanned image, the area occupied by the recognized part of the positioning mark in the scanned image is acquired;

If the area occupied by the recognized part of the positioning mark in the scanned image exceeds the preset area range, determine the position adjustment direction perpendicular to the plane where the digital DOI is located;

Based on the position adjustment direction perpendicular to the plane where the DOI is located, a position adjustment notification for the DOI is generated.

In this case, the preset area range can be characterized according to the area of the corresponding part in the preset position range of the identified part location marker in the scanned image. The area occupied by the recognized part of the positioning mark in the scanned image can be used to characterize the size of the positioning mark. If the area occupied by the recognized part of the positioning mark is large, it can be determined that the vertical distance between the scanned end and the scanning end is small. Nearly improved accuracy.

Preferably, the location adjustment notification to DOI is generated based on the location adjustment direction, and may also include:

Based on the location adjustment direction, the correspondence between the location adjustment direction and the type of the location adjustment notification, a location adjustment notification to the DOI is generated. For example, if the scanned end is to be adjusted in the front and rear directions, flashes will occur; if the scanned end is to be adjusted in the left and right directions, it will vibrate;

For another example, even for the same type of position adjustment notification, different specific types may be set according to the position adjustment direction. If the scanning end is adjusted in the front and back direction, strong vibration or high vibration frequency will occur; if the scanned end is adjusted in the left and right direction, weak vibration or low vibration frequency will occur. Not to be listed here one by one, the type of position adjustment notification includes at least one or more of the following: vibration frequency, vibration intensity, vibration times, flash frequency, flash intensity, or other multiple options.

In the embodiment of this specification, how to determine the imaging position and preset position range of the positioning mark in the scanned image, and under what circumstances determine the position adjustment direction parallel to the plane where the DOI is located can be realized through the following embodiments.

first embodiment

In the embodiment of this specification, the coordinate value of the positioning mark in the reference coordinate system may be used to represent the imaging position of the positioning mark in the scanned image. It should be noted that the reference coordinate system may be a two-dimensional coordinate system established according to the camera and the DOI in the scanned end. In this way, the scanning positioning method also includes:

Establish a reference coordinate system based on the camera and DOI;

Obtain the imaging coordinate value and preset coordinate value range of the positioning mark in the reference coordinate system;

Determining the relative position of the DOI and the scanning field of view of the scanning end based on the imaging position and preset position range of the positioning mark in the scanning image, so that the scanning end scans the DOI, including:

Match the imaging coordinate value of the positioning mark in the reference coordinate system with the preset coordinate value range to determine the relative position of the DOI and the scanning field of view of the scanning end, so that the scanning end can scan the DOI.

In this case, the preset coordinate value range of the positioning mark in the reference coordinate system is used to represent the preset position range, and the imaging coordinate value of the positioning mark in the reference coordinate system is used to represent the imaging coordinate value. In the case that the DOI of the scanned end is aligned with the scanning end, and the scanning end can scan and identify the DOI, the preset coordinate value range of imaging in the reference coordinate system can be identified based on the positioning. In this way, the relative position of the DOI and the scanning field of view of the scanning end can be accurately judged, which can improve the accuracy of judging whether the DOI falls within the scanning field of view of the scanning end.

In this case, generating a DOI relocation notice based on the DOI relocation direction may include:

If after matching, the sub-coordinate values along at least one coordinate value in the imaging coordinate value exceed the sub-coordinate value range along the same coordinate axis in the preset coordinate value range, the position adjustment direction along the plane where the DOI is located is determined based on the coordinate axis, and then based on The coordinate axis determines the position adjustment direction parallel to the plane where the DOI is located, and generates the DOI position adjustment notification. In this way, the position adjustment direction is included in the position adjustment notification.

Therefore, under the premise of maintaining a certain vertical distance between the scanning end and the scanned end, based on the imaging coordinate value of the positioning mark, the deviation direction of the scanned end along the horizontal direction can be more accurately determined, and the user is reminded to adjust the position of the scanned end. .

For example, in the x-y coordinate system, if the imaging coordinate value of the positioning mark is (-2, -4), and the preset coordinate value range is (-1 ~ -3, -1 ~ -3), then the positioning is determined after matching The deviation direction of the logo is the negative direction of the y-axis, which means that the scanned end deviates along the positive direction of the y-axis, and the scanned end needs to be moved along the negative direction of the y-axis until the imaging coordinate value falls into the preset coordinate value within range. In the actual standing scanning end, if the negative direction of the y-axis corresponds to the downward direction, the user is reminded to move the scanned end downward in the position adjustment notification; in the actual horizontal scanning end, if the negative direction of the y-axis corresponds to In the backward direction, the user is reminded to move the scanned end backward in the position adjustment notification.

In this case, based on the imaging position and preset position range of the positioning mark in the scanned image, determining the relative position of the DOI and the scanning field of view at the scanning end may include:

If part of the positioning marks or no positioning marks are recognized in the scanned image, a position adjustment notification will be generated based on the position adjustment direction perpendicular to the plane where the DOI is located until all the positioning marks are recognized in the scanned image.

In this way, when all the positioning marks are identified in the scanned image, match the imaging coordinate values of the positioning marks in the reference coordinate system with the preset coordinate value range to determine the relative position of the DOI and the scanning field of view at the scanning end, so that the scanning end can scan DOI. When the imaging coordinate value of the positioning mark in the reference coordinate system exceeds the preset coordinate value range, a position adjustment notification is generated based on the position adjustment direction parallel to the plane where the DOI is located.

In the embodiment of this specification, the position adjustment notification may be generated according to the correspondence between the specific position adjustment direction along the plane parallel to the DOI and the type of the position adjustment notification.

FIG. 5 is a schematic reference diagram of a scanning positioning method provided by an embodiment of this specification, as shown below. If the positioning mark 1010 includes at least one first locator 1011, obtaining the imaging coordinate value of the positioning mark 1010 in the reference coordinate system x-y includes:

Obtain the imaging coordinate values of at least one first locator 1011 in the reference coordinate system (for example, the imaging coordinate values (x1, y1), (x2, y2), (x3, y3) of the three first locators 1011);

Obtain the preset coordinate value range of the positioning mark 1010 in the reference coordinate system x-y, including:

Obtain a preset coordinate value range of at least one first locator 1011 in the reference coordinate system x-y;

Matching the imaging coordinate value of the positioning mark 1010 in the reference coordinate system x-y and the preset coordinate value range, including:

Based on the correspondence between the first locator 1011, the imaging coordinate value and the preset coordinate value range, match the imaging coordinate value and the preset coordinate value range of at least one first locator 1011 in the reference coordinate system x-y, and determine whether the DOI Fall into the scanning field of view of the scanning end.

When the imaging coordinate values of each first locator 1011 in the reference coordinate system x-y fall within the corresponding preset coordinate value range, it is determined that the DOI falls within the scanning field of view of the scanning end; when a part or all of the first locators If the imaging coordinate value of the locator 1011 in the reference coordinate system x-y does not fall within the corresponding preset coordinate value range, it is determined that the DOI does not fall within the scanning field of view of the scanning end.

In the embodiment of this specification, the reference coordinate system x-y may take the image center of the scanned image as the coordinate origin, and the image center corresponds to the camera at the scanned end. Alternatively, the reference coordinate system can take any point in the DOI or other points as the coordinate origin.

In an actual application scenario, the preset coordinate value range of the first locator in the reference coordinate system can be determined according to the general placement position of the scanned end. In this way, before the camera is started to take pictures of the scanning end, a position placement notification can be sent to the user, so that the scanned end is placed according to the general placement position to obtain accurate imaging coordinate values.

In the embodiment of this specification, obtaining the imaging coordinate value and the corresponding preset coordinate value range of at least one first locator in the reference coordinate system may be to obtain a part or all of the first locator in the reference coordinate system The imaging coordinate values in and the corresponding preset coordinate value ranges. For example, when the positioning mark 1010 includes three first locators 1011, the imaging coordinate values of the three first locators 1011 and the corresponding three preset coordinate value ranges can be acquired at the same time; or one or two first locators can be acquired The imaging coordinate values (not shown in the figure) and the corresponding preset coordinate value ranges in the reference coordinate system.

In the embodiment of this specification, obtaining the preset coordinate value range of the positioning mark in the reference coordinate system may include:

Based on the imaging coordinate values of the DOI in the reference coordinate system, a preset coordinate value range of the positioning mark 1010 in the reference coordinate system is determined.

It should be understood that, referring to FIG. 1 , when the scanning terminal 101 can scan the DOI 1020 , the location mark 1010 in the scanned image 1022 corresponds to the position of the DOI 1020 . Therefore, the preset coordinate value range of the positioning marker 1010 in the reference coordinate system x-y can be determined with reference to the imaging coordinate values of the DOI 1020 in the reference coordinate system x-y.

Without affecting the scan end 101 to scan and identify the DOI 1020 , in the scan field of view of the scan end 101 , the DOI 1020 can face the scan end 101 directly, or deviate from the opposite position within a certain deviation range. Therefore, based on the coordinate values of the DOI 1020 in the reference coordinate system x-y, and considering a certain deviation range of the DOI 1020 relative to the scanning end 101, determine the preset coordinate value range of the positioning mark 1010 in the reference coordinate system x-y. Wherein, a certain deviation range can be determined based on empirical values or experimental values based on a certain vertical distance between the scanned end and the scanning end, the resolution of the DOI and/or the scanning field of view of the scanning end in the actual application process, here No specific description is given.

Wherein, if the DOI includes at least one second locator corresponding to the position of the first locator, then obtain the preset coordinate value range of at least one first locator in the reference coordinate system x-y, including:

Based on the actual coordinate value of the second locator in the reference coordinate system, a preset coordinate value range of at least one first locator corresponding to the position of the second locator in the reference coordinate system is determined.

second embodiment

In the embodiment of the present specification, the imaging area of the positioning mark in the scanned image may be used to characterize the position of the positioning mark in the scanned image, as described below.

FIG. 6 is a first schematic diagram of a scanning positioning method provided by an embodiment of this specification, as shown below. Based on the imaging position and preset position range of the positioning mark in the scanned image, determine the relative position of the DOI and the scanning field of view at the scanning end, including:

Obtain the imaging area A1 and the preset imaging area range A0 of the positioning mark 601 in the scanned image;

Matching the imaging position and preset position range of the positioning mark 601 in the scanned image includes:

The imaging area A1 of the positioning mark 601 in the scanned image is matched with the preset imaging area range A0.

Wherein, the preset imaging area range A0 defines the predictable area position and area boundary range of the positioning mark 601 in the scanned image. Therefore, if the imaging area A1 is all within the preset imaging area range A0, it is determined that the DOI falls within the scanning range of the scanning end; if the imaging area A1 at least partially overflows the preset imaging area range A0, it is determined that the DOI does not fall within the scanning range of the scanning end. inside.

FIG. 7 is a second schematic diagram of a scanning positioning method provided by an embodiment of this specification, as shown below. If after matching, the imaging area A1 of the positioning mark 601 overflows from at least one boundary C of the preset imaging area range A0, then based on the overflowing boundary C, determine a position adjustment direction for the DOI parallel to the plane where the DOI is located. Afterwards, based on the position adjustment direction parallel to the plane where the DOI is located, a position adjustment notification is generated.

Specifically, when the imaging area A2 of the positioning mark 601 overflows to the right boundary C of the preset imaging area range A0, it can be determined that the DOI position adjustment direction is leftward; when the imaging area of the positioning mark 601 is toward the preset imaging area If the upper boundary of the range overflows, it may be determined that the DOI position adjustment direction is downward (not shown in the figure). Adjusting the direction of other positions is based on this, and will not be listed one by one here.

In this case, based on the imaging position and preset position range of the positioning mark in the scanned image, the relative position of the DOI and the scanning field of view at the scanning end can be determined, including:

First determine whether the positioning mark is recognized in the scanned image. If part of the positioning mark is recognized in the scanned image or no positioning mark is recognized, a position adjustment notice is generated based on the position adjustment direction perpendicular to the plane where the DOI is located, until it is found in the scanned image. All location markers are recognized.

In this way, when all the positioning marks are recognized in the scanned image, the imaging area of the positioning marks in the scanned image is matched with the preset imaging area range to determine the relative position of the DOI and the scanning field of view of the scanning end, so that the scanning end scans the DOI. When the imaging area of the positioning marker in the scanned image overflows the range of the preset imaging area, a position adjustment notification is generated based on a position adjustment direction parallel to the plane where the DOI is located.

Using the scanning positioning method provided by the embodiment of this specification, based on the generated DOI, start the camera to scan the scanning end with the positioning mark, wherein the positioning mark is used to locate the relative position of the scanning end and the DOI; after that, match the position of the positioning mark in the scanned image The target position and the preset position range determine whether the DOI falls within the scanning field of view of the scanning end. In this way, by locating the positioning mark in the scanning end, it is determined whether the DOI enters the scanning field of view of the scanning end, so as to realize the precise positioning of the scanning process. In practical applications, if it is determined that the DOI falls within the scanning field of view of the scanning end, the user can be prompted to keep the position; if it is determined that the DOI does not fall within the scanning field of view of the scanning end, the user can be prompted to adjust the position of the scanned end, or adjust itself The position to DOI falls within the scanning field of view of the scanning end, achieving fast scanning and obtaining information, and improving user experience.

FIG. 8 is a schematic structural diagram of a scanning positioning device provided by an embodiment of this specification, and the structure is as follows. Scanning and positioning devices include:

generating unit 801, generating a DOI for identification by the scanning end;

The starting unit 802, based on the generated DOI, starts the camera to scan the scanning end with the positioning mark to obtain the scanned image;

The determining unit 803 determines the relative position of the DOI and the scanning field of view of the scanning end based on the imaging position of the positioning mark in the scanned image and the preset position range, so that the scanning end scans the DOI.

Optionally, based on the imaging position and preset position range of the positioning mark in the scanned image, determine the relative position of the DOI and the scanning field of view at the scanning end, including:

If at least one of the following situations occurs, it is determined that the DOI is outside the scanning field of view of the scanning end:

The imaging position of the positioning mark in the scanned image is at least partially outside the range of the preset position;

Part of the positioning mark is recognized in the scanned image;

The positioning mark was not recognized in the scanned image.

Optionally, the generating unit 801 generates a DOI position adjustment notification;

Wherein, the position adjustment notification includes: at least one of voice, vibration, and flash.

Optionally, the generating unit 801 generates a DOI position adjustment notification, including:

Based on the direction of relocation of the DOI, a notification of relocation of the DOI is generated.

Optionally, based on the imaging position and preset position range of the positioning mark in the scanned image, determine the relative position of the DOI and the scanning field of view at the scanning end, including:

Matching the imaging area of the positioning mark in the scanned image with the range of the preset imaging area;

Based on the DOI's position adjustment direction, generate a DOI position adjustment notice, including:

If after matching, the imaging area overflows from at least one boundary of the preset imaging area range, then determine the position adjustment direction along the plane where the DOI is located based on the overflowing boundary;

A position adjustment notification for the DOI is generated based on a position adjustment direction parallel to the plane where the DOI is located.

Optionally, based on the imaging position and preset position range of the positioning mark in the scanned image, determine the relative position of the DOI and the scanning field of view at the scanning end, including:

Matching the imaging coordinate value and the preset coordinate value range of the positioning mark in the reference coordinate system;

Based on the DOI's position adjustment direction, generate a DOI position adjustment notice, including:

If after matching, the sub-coordinate values along at least one coordinate value in the imaging coordinate value exceed the sub-coordinate value range along the same coordinate axis in the preset coordinate value range, then determine the position adjustment direction along the plane parallel to the DOI based on the coordinate axis;

A position adjustment notification for the DOI is generated based on a position adjustment direction parallel to the plane where the DOI is located.

Optionally, based on the DOI's position adjustment direction, a DOI position adjustment notification is generated, including:

If no positioning mark or part of the positioning mark is recognized in the scanned image, a position adjustment notice for the DOI is generated based on the position adjustment direction perpendicular to the plane where the DOI is located.

Optionally, based on the DOI's position adjustment direction, a DOI position adjustment notification is generated, including:

If part of the positioning mark is recognized in the scanned image, the area occupied by the recognized part of the positioning mark in the scanned image is obtained;

If the area occupied by the recognized part of the positioning mark in the scanned image exceeds the preset area range, determine the position adjustment direction perpendicular to the plane where the DOI is located;

Based on the position adjustment direction perpendicular to the plane where the DOI is located, a position adjustment notification for the DOI is generated.

The scanning and positioning device provided by the embodiment of this specification has the function of quickly realizing scanning and positioning, and has a good user operation experience.

Based on the same inventive concept, the embodiment of this specification also provides an electronic device, including at least one processor and a memory, the memory stores a program, and is configured to perform the following steps by at least one processor:

Generate a DOI for the scanner to identify;

Based on the generated DOI, start the camera to scan the scanning end with the positioning mark to obtain the scanned image;

Based on the imaging position and preset position range of the positioning mark in the scanned image, the relative position of the DOI and the scanning field of view of the scanning end is determined, so that the scanning end scans the DOI.

For other functions of the processor, reference may also be made to the contents recorded in the foregoing embodiments, and details will not be repeated here.

Based on the same inventive concept, the embodiment of this specification also provides a computer-readable storage medium, the computer-readable storage medium includes a program used in combination with an electronic device, and the program can be executed by a processor to complete the following steps:

Generate a DOI for the scanner to identify;

Based on the generated DOI, start the camera to scan the scanning end with the positioning mark to obtain the scanned image;

Based on the imaging position and preset position range of the positioning mark in the scanned image, the relative position of the DOI and the scanning field of view of the scanning end is determined, so that the scanning end scans the DOI.

For other functions of the processor, reference may also be made to the contents recorded in the foregoing embodiments, and details will not be repeated here.

In the 1990s, the improvement of a technology can be clearly distinguished as an improvement in hardware (for example, improvements in circuit structures such as diodes, transistors, and switches) or improvements in software (improvement in method flow). However, with the development of technology, the improvement of many current method flows can be regarded as the direct improvement of the hardware circuit structure. Designers almost always get the corresponding hardware circuit structure by programming the improved method flow into the hardware circuit. Therefore, it cannot be said that the improvement of a method flow cannot be realized by hardware physical modules. For example, a Programmable Logic Device (Programmable Logic Device, PLD) (such as a Field Programmable Gate Array (Field Programmable Gate Array, FPGA)) is such an integrated circuit, and its logic function is determined by programming the device by a user. It is programmed by the designer to "integrate" a digital system on a PLD, instead of asking a chip manufacturer to design and make a dedicated integrated circuit chip. Moreover, nowadays, instead of making integrated circuit chips by hand, this kind of programming is mostly realized by "logic compiler (logic compiler)" software, which is similar to the software compiler used when writing programs. The original code of the computer must also be written in a specific programming language, which is called a hardware description language (Hardware Description Language, HDL), and there is not only one kind of HDL, but many kinds, such as ABEL (Advanced Boolean Expression Language) , AHDL (Altera Hardware Description Language), Confluence, CUPL (Cornell University Programming Language), HDCal, JHDL (Java Hardware Description Language), Lava, Lola, MyHDL, PALASM, RHDL (Ruby Hardware Description Language), etc., currently the most commonly used is VHDL (Very-High-Speed Integrated Circuit Hardware Description Language) and Verilog. It should also be clear to those skilled in the art that only a little logical programming of the method flow in the above-mentioned hardware description languages and programming into an integrated circuit can easily obtain a hardware circuit for realizing the logic method flow.

The controller may be implemented in any suitable way, for example the controller may take the form of a microprocessor or processor and a computer readable medium storing computer readable program code (such as software or firmware) executable by the (micro)processor , logic gates, switches, Application Specific Integrated Circuit (ASIC), programmable logic controllers, and embedded microcontrollers, examples of controllers include but are not limited to the following microcontrollers: ARC 625D, Atmel AT91SAM, Microchip PIC18F26K20 and Silicone Labs C8051F320, the memory controller can also be implemented as part of the memory's control logic. Those skilled in the art also know that, in addition to realizing the controller in a purely computer-readable program code mode, it is entirely possible to make the controller use logic gates, switches, application-specific integrated circuits, programmable logic controllers, and embedded The same function can be realized in the form of a microcontroller or the like. Therefore, such a controller can be regarded as a hardware component, and the devices included in it for realizing various functions can also be regarded as structures within the hardware component. Or even, means for realizing various functions can be regarded as a structure within both a software module realizing a method and a hardware component.

The systems, devices, modules, or units described in the above embodiments can be specifically implemented by computer chips or entities, or by products with certain functions. A typical implementing device is a computer. Specifically, the computer may be, for example, a personal computer, a laptop computer, a cellular phone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or Combinations of any of these devices.

For the convenience of description, when describing the above devices, functions are divided into various units and described separately. Of course, when implementing the present application, the functions of each unit can be implemented in one or more pieces of software and/or hardware.

Those skilled in the art should understand that the embodiments of the present invention may be provided as methods, systems, or computer program products. Accordingly, the present invention can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.

In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

Memory may include non-permanent storage in computer readable media, in the form of random access memory (RAM) and/or nonvolatile memory such as read only memory (ROM) or flash RAM. Memory is an example of computer readable media.

Computer-readable media, including both permanent and non-permanent, removable and non-removable media, can be implemented by any method or technology for storage of information. Information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read only memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Flash memory or other memory technology, Compact Disc Read-Only Memory (CD-ROM), Digital Versatile Disc (DVD) or other optical storage, Magnetic tape cartridge, tape magnetic disk storage or other magnetic storage device or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media excludes transitory computer-readable media, such as modulated data signals and carrier waves.

It should also be noted that the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes Other elements not expressly listed, or elements inherent in the process, method, commodity, or apparatus are also included. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

This application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including storage devices.

Each embodiment in this specification is described in a progressive manner, the same and similar parts of each embodiment can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and for relevant parts, refer to part of the description of the method embodiment.

The above descriptions are only examples of the present application, and are not intended to limit the present application. For those skilled in the art, various modifications and changes may occur in this application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims (19)

1. A scanning positioning method, comprising: Generate a digital object identifier for the scanner to recognize; Based on the generated digital object identifier, start the camera to scan the scanning end with the positioning mark to obtain a scanned image; Based on the imaging position and preset position range of the positioning mark in the scanned image, determine the relative position of the digital object identifier and the scanning field of view of the scanning end, so that the scanning end scans the digital object mark symbol. 2. The scanning positioning method according to claim 1, based on the imaging position and preset position range of the positioning mark in the scanning image, determine the relative position between the digital object identifier and the scanning field of view of the scanning end location, including: If at least one of the following situations occurs, it is determined that the digital object identifier is located outside the scanning field of view of the scanning end: The imaging position of the positioning mark in the scanned image is at least partially outside the range of the preset position; Part of the positioning mark is recognized in the scanned image; The location marker is not identified in the scanned image. 3. The scanning positioning method according to claim 2, said method further comprising: generating a location adjustment notice for the digital object identifier; The position adjustment notification includes: at least one of voice, vibration, and flash. 4. The scanning positioning method according to claim 3, generating a position adjustment notification to the digital object identifier, comprising: A repositioning notification for the digital object identifier is generated based on a repositioning direction for the digital object identifier. 5. The scanning positioning method according to claim 4, based on the imaging position and preset position range of the positioning mark in the scanning image, determine the relative position between the digital object identifier and the scanning field of view of the scanning end location, including: matching the imaging area of the positioning mark in the scanned image with the range of the preset imaging area; generating a relocation notification for the digital object identifier based on a relocation direction for the digital object identifier, comprising: If the imaging area overflows from at least one boundary of the preset imaging area range after matching, then determine a position adjustment direction along a plane parallel to the plane where the digital object identifier is located based on the overflowed boundary; A repositioning notification for the digital object identifier is generated based on a repositioning direction parallel to a plane in which the digital object identifier is located. 6. The scanning positioning method according to claim 4, based on the imaging position and preset position range of the positioning mark in the scanning image, determine the relative relationship between the digital object identifier and the scanning field of view of the scanning end location, including: Matching the imaging coordinate value and the preset coordinate value range of the positioning mark in the reference coordinate system; generating a relocation notification for the digital object identifier based on a relocation direction for the digital object identifier, comprising: If after matching, the sub-coordinate values along at least one coordinate value in the imaging coordinate value exceed the sub-coordinate value range along the same coordinate axis in the preset coordinate value range, then determine the The position adjustment direction of the plane where the digital object identifier is located; A repositioning notification for the digital object identifier is generated based on a repositioning direction parallel to a plane in which the digital object identifier is located. 7. The scanning positioning method according to claim 4, generating a position adjustment notification for the digital object identifier based on the position adjustment direction for the digital object identifier, comprising: If the positioning mark is not recognized or a part of the positioning mark is recognized in the scanned image, the position of the digital object identifier is generated based on a position adjustment direction perpendicular to the plane where the digital object identifier is located Adjust notifications. 8. The scanning positioning method according to claim 4, based on the position adjustment direction of the digital object identifier, generating a position adjustment notification for the digital object identifier, comprising: If part of the positioning mark is recognized in the scanned image, acquiring the area occupied by the recognized part of the positioning mark in the scanned image; If the area occupied by the identified part of the positioning mark in the scanned image exceeds a preset area range, determine a position adjustment direction perpendicular to the plane where the digital object identifier is located; A position adjustment notification for the digital object identifier is generated based on a position adjustment direction perpendicular to the plane where the digital object identifier is located. 9. A scanning positioning method, comprising: The scanning end provides a positioning mark, so that the terminal providing the digital object identifier is positioned through the camera, and the relative position of the digital object identifier and the scanning field of view of the scanning end is determined; A digital object identifier located within the scanned field of view is scanned. 10. A scanning positioning device, comprising: A generating unit for generating a digital object identifier for identification by the scanning end; The starting unit, based on the generated digital object identifier, starts the camera to scan the scanning end with the positioning mark to obtain a scanned image; The determining unit is configured to determine the relative position of the digital object identifier and the scanning field of view of the scanning end based on the imaging position and the preset position range of the positioning mark in the scanning image, so that the scanning end scans the A digital object identifier. 11. The scanning positioning device according to claim 10, based on the imaging position and preset position range of the positioning mark in the scanning image, determine the relative relationship between the digital object identifier and the scanning field of view of the scanning end location, including: If at least one of the following situations occurs, it is determined that the digital object identifier is located outside the scanning field of view of the scanning end: The imaging position of the positioning mark in the scanned image is at least partially outside the range of the preset position; Part of the positioning mark is recognized in the scanned image; The location marker is not identified in the scanned image. 12. The scanning and positioning device according to claim 11, the generating unit generates a position adjustment notification for the digital object identifier; Wherein, the position adjustment notification includes: at least one of voice, vibration, and flash. 13. The scanning and positioning device according to claim 12, wherein the generation unit generates the position adjustment notification of the digital object identifier, comprising: A repositioning notification for the digital object identifier is generated based on a repositioning direction for the digital object identifier. 14. The scanning positioning device according to claim 13, based on the imaging position and preset position range of the positioning mark in the scanning image, determine the relative position between the digital object identifier and the scanning field of view of the scanning end location, including: matching the imaging area of the positioning mark in the scanned image with the range of the preset imaging area; generating a relocation notification for the digital object identifier based on a relocation direction for the digital object identifier, comprising: If after matching, the imaging area overflows from at least one boundary of the preset imaging area range, then determine a position adjustment direction along the plane where the digital object identifier is located based on the overflowed boundary; A repositioning notification for the digital object identifier is generated based on a repositioning direction parallel to a plane in which the digital object identifier is located. 15. The scanning positioning device according to claim 13, based on the imaging position and preset position range of the positioning mark in the scanning image, determine the relative position between the digital object identifier and the scanning field of view of the scanning end location, including: Matching the imaging coordinate value and the preset coordinate value range of the positioning mark in the reference coordinate system; generating a relocation notification for the digital object identifier based on a relocation direction for the digital object identifier, comprising: If after matching, the sub-coordinate values along at least one coordinate value in the imaging coordinate value exceed the sub-coordinate value range along the same coordinate axis in the preset coordinate value range, then determine the The position adjustment direction of the plane where the digital object identifier is located; A repositioning notification for the digital object identifier is generated based on a repositioning direction parallel to a plane in which the digital object identifier is located. 16. The scanning and positioning device according to claim 13, generating a position adjustment notification for the digital object identifier based on the position adjustment direction for the digital object identifier, comprising: If the positioning mark is not recognized or a part of the positioning mark is recognized in the scanned image, the position of the digital object identifier is generated based on a position adjustment direction perpendicular to the plane where the digital object identifier is located Adjust notifications. 17. The scanning and positioning device according to claim 13, generating a position adjustment notification for the digital object identifier based on the position adjustment direction for the digital object identifier, comprising: If part of the positioning mark is recognized in the scanned image, acquiring the area occupied by the recognized part of the positioning mark in the scanned image; If the area occupied by the identified part of the positioning mark in the scanned image exceeds a preset area range, determine a position adjustment direction perpendicular to the plane where the digital object identifier is located; A position adjustment notification for the digital object identifier is generated based on a position adjustment direction perpendicular to the plane where the digital object identifier is located. 18. An electronic device, comprising at least one processor and a memory, the memory is stored with a program, and is configured to perform the following steps by at least one of the processors: Generate a digital object identifier for the scanner to recognize; Based on the generated digital object identifier, start the camera to scan the scanning end with the positioning mark to obtain a scanned image; Based on the imaging position and preset position range of the positioning mark in the scanned image, determine the relative position of the digital object identifier and the scanning field of view of the scanning end, so that the scanning end scans the digital object mark symbol. 19. A scanning positioning system, comprising: a scanning end and a scanned end, and the scanned end is used for: Generate a digital object identifier for the scanner to recognize; Based on the generated digital object identifier, start the camera to scan the scanning end with the positioning mark to obtain a scanned image; Based on the imaging position and preset position range of the positioning mark in the scanned image, determine the relative position of the digital object identifier and the scanning field of view of the scanning end, so that the scanning end scans the digital object mark symbol.