Marking device

Abstract

The embodiment of the utility model provides a marking device. The marking device comprises a first main body and a second main body, the second main body is arranged on the first main body, and at least one of the position and the posture of the second main body relative to the first main body can be changed; wherein each of the first main body and the second main body is provided with at least one partial identification mark, and the partial identification marks arranged on the first main body and the second main body can be combined into different integral identification marks.

Description

Technical Field

[0001] The embodiments of the present disclosure relate to the technical field of visual identification markers, and in particular to a marking device. Background Art

[0002] In visual recognition systems, markers are often used. Markers include specially designed graphics. The visual recognition system reads the image information of the marker through a camera, can recognize the graphics in the image information, and operate the visual recognition system based on the recognition results to adapt to the user's use of the visual recognition system.

[0003] The markers in the related art usually adopt a single marker (which can be in the form of a card) with a single pattern. When the visual recognition system requires multiple markers, it is necessary to manufacture multiple markers with different patterns. However, this is costly and not flexible enough to meet the needs of users when using the visual recognition system. Utility Model Content

[0004] The embodiments of the present disclosure provide a marking device to at least partially improve the above-mentioned problems.

[0005] An embodiment of the present disclosure provides a marking device, which includes: a first body and a second body; the second body is arranged on the first body, and at least one of the position and posture of the second body relative to the first body can be changed; wherein the first body and the second body are both provided with at least one partial identification mark, and the partial identification marks provided on the first body and the second body can be combined into different overall identification marks. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of the present disclosure. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0007] Figure 1A A schematic diagram of an exemplary marking device in an embodiment of the present disclosure is shown.

[0008] Figure 1B Shows Figure 1A Another schematic diagram of the marking device in FIG.

[0009] Figure 1C Shows Figure 1A Schematic diagram of the first subject in .

[0010] Figure 1D Shows Figure 1ASchematic diagram of the second subject in .

[0011] Figure 2A A schematic diagram of another example marking device in an embodiment of the present disclosure is shown.

[0012] Figure 2B Shows Figure 2A Another schematic diagram of the marking device in FIG.

[0013] Figure 2C Shows Figure 2A Schematic diagram of the first subject in .

[0014] Figure 2D Shows Figure 2A Schematic diagram of the second subject in .

[0015] Figure 3A A schematic diagram of another example marking device in an embodiment of the present disclosure is shown.

[0016] Figure 3B Shows Figure 3A Schematic diagram of the first subject in .

[0017] Figure 3C Shows Figure 3A Schematic diagram of the second subject in .

[0018] Description of reference numerals:

[0019] 100. Marking device; 1. First body; 2. Second body; 10. Accommodating groove; 31. First type partial identification mark; 32. Second type partial identification mark; 321. Identification corner point; 33. Third type partial identification mark; 34. Fourth type partial identification mark; 341. Arrow mark; 35. Background pattern. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present disclosure, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments. All other embodiments obtained by ordinary technicians in the field based on the embodiments in the embodiments of the present disclosure should fall within the scope of protection of the embodiments of the present disclosure.

[0021] The visual recognition system in the related art usually adopts a single marker (which can be in the form of a card) in the form of a single graphic. The visual recognition system reads the image information of the marker through a camera and recognizes the graphic in the image. The visual recognition system can be operated according to the recognition result. However, when the visual recognition system requires multiple markers, using such markers requires setting multiple markers with different graphics. Therefore, it is not only costly, but also not flexible enough to meet the needs of users when using the visual recognition system.

[0022] Reference Figure 1A to Figure 3C As shown, according to the first aspect of an embodiment of the present disclosure, a marking device 100 is provided, which includes: a first body 1 and a second body 2; the second body 2 is arranged on the first body 1, and at least one of the position and posture of the second body 2 relative to the first body 1 can be changed; wherein the first body 1 and the second body 2 are both provided with at least one partial identification mark, and the partial identification marks provided on the first body 1 and the second body 2 can be combined into different overall identification marks.

[0023] The marking device 100 in the embodiment of the present disclosure has a second body 2 disposed on the first body 1, and at least one of the position and posture relative to the first body 1 can be changed, so that the partial identification marks disposed on the first body 1 and the second body 2 can be combined into different overall identification marks. Therefore, when using the marking device 100 in the embodiment of the present disclosure, it is not necessary to manufacture different marking devices 100 for each different overall identification mark, but it can be flexibly combined into different overall identification marks by flexibly adjusting at least one of the position and posture of the second body 2 of the marking device 100 on the first body 1, so that the marking device 100 presents a variety of different styles, realizing a marking device 100 for multiple uses. The marking device 100 can effectively adapt to the needs of the visual recognition system for a variety of markers, and then can effectively reduce the cost of the marker, improve flexibility, and better meet the needs of users when using the visual recognition system.

[0024] The specific implementation of the marking device of the embodiment of the present disclosure is described below in conjunction with the accompanying drawings. It should be noted that, for the convenience of illustration, the structures in the following drawings are not necessarily drawn according to the actual proportions.

[0025] The visual recognition system described in the embodiments of the present disclosure may be a system implemented by any visual recognition technology. For example, the visual recognition system may be used in a head-mounted display device, such as an AR (Augmented Reality) device or a VR (Virtual Reality) device.

[0026] In the embodiment of the present disclosure, the first body 1 can be of any shape and structure as long as it can meet the requirements. For example, the first body 1 can be in a circular, rectangular (including square), hexagonal (including regular hexagonal) or other shapes. Or it can also be other irregular shapes. The first body 1 can be block-shaped or plate-shaped. In the embodiment of the present disclosure, the edges of the first body 1 can be rounded to prevent the user from cutting the palm when holding the first body 1.

[0027] For example, refer to Figure 1C , Figure 2C , Figure 3B In the example shown, the first body 1 may be a plate-shaped regular hexagonal structure with rounded edges. Figure 1C , Figure 2C , Figure 3B The examples in the accompanying drawings are not intended to limit the embodiments of the present disclosure.

[0028] In the disclosed embodiment, the second body 2 can be of any shape and structure as long as it can meet the requirements. For example, the second body 2 can be in a circular, rectangular (including square), hexagonal (including regular hexagon) or other shapes. Or it can also be other irregular shapes. The second body 2 can be block-shaped or plate-shaped. In the disclosed embodiment, the edges of the second body 2 can be rounded to prevent the user from cutting the palm when holding the second body 2 or adjusting the position and / or posture of the second body 2.

[0029] For example, refer to Figure 1D In the example shown, the second body 2 may be a plate-shaped circular structure with rounded edges. Figure 2D In the example shown, the second body 2 may be a plate-shaped square structure with rounded corners at the edges. Figure 3C In the example shown, the second body 2 may be a plate-shaped hexagonal structure with rounded edges. It should be understood that the above example is not intended to limit the embodiments of the present disclosure.

[0030] In some optional implementations, combined with Figure 1A to Figure 3C As shown, the second body 2 is removably disposed on the first body 1. This makes it easier to adjust the position and / or posture of the second body 2 relative to the first body 1, so that different overall identification marks can be flexibly combined, so that the marking device 100 presents a variety of different styles.

[0031] In some optional embodiments, the first body 1 and the second body 2 can be connected to each other through a connection structure. When the second body 2 is on the first body 1, at least one of the position and posture can be adjusted through the connection structure. It should be understood that if the first body 1 and the second body 2 are removably arranged in this embodiment, the connection between the second body 2 and the connection structure can be released, so that the second body 2 can be removed from the first body 1. The connection structure can be a detachable connection structure.

[0032] In some other optional embodiments, combined with Figure 1A to Figure 3C As shown, the first body 1 and the second body 2 may also be two independent structures.

[0033] Based on this, in the embodiment of the present disclosure, through the independent first body 1 and second body 2, the position and / or posture of the second body 2 relative to the first body 1 can be more conveniently adjusted so that they can be flexibly combined into different overall identification marks, so that the marking device 100 can be presented in a variety of different styles.

[0034] In some optional embodiments, referring to Figure 1A and Figure 1B , Figure 2A and Figure 2B ,as well as Figure 3A As shown, the first body 1 is provided with a receiving groove 10 , and the second body 2 is disposed in the receiving groove 10 .

[0035] Based on this, in the embodiment of the present disclosure, the second body 2 is set in the receiving groove 10 on the first body 1 and then the position and / or posture is adjusted to ensure the accuracy of adjusting the position and / or posture of the second body 2, so that the partial identification marks set on the second body 2 and the first body 1 can be combined into different overall identification marks more conveniently and accurately.

[0036] The shape of the receiving groove 10 is not particularly limited in the embodiment of the present disclosure. The shape of the receiving groove 10 can be set according to the shape of the second body 2. For example, referring to Figure 1A and Figure 1B As shown, the second body 2 is circular, and the receiving groove 10 can be opened as a slightly larger or equal circular groove, and the second body 2 can be filled into the receiving groove 10 as a whole. Figure 2A and Figure 2B As shown, the second body 2 is a rectangular groove with rounded corners, and the receiving groove 10 can be opened to be a rectangular groove with rounded corners larger than the second body 2, and the second body 2 can be arranged in a partial area of ​​the receiving groove 10. For another example, referring to Figure 3AAs shown, the second body 2 is a regular hexagon, and the receiving groove 10 can be provided with a hexagonal groove larger than the second body 2, and the second body 2 can be arranged in a partial area of ​​the receiving groove 10, and when in use, the three sides of the second body 2 can fit the side wall of the receiving groove 10. It should be understood that the above examples are not intended to limit the embodiments of the present disclosure.

[0037] In some optional embodiments, when the second body 2 is disposed in the receiving groove 10 , it does not extend beyond the upper edge of the side wall of the receiving groove 10 .

[0038] Based on this, since the second body 2 does not extend beyond the upper edge of the side wall of the receiving groove 10, when the camera of the visual recognition system shoots the marking device 100 from any shooting angle, the second body 2 is not easy to block the partial identification mark outside the receiving groove 10 on the first body 1, thereby better ensuring the integrity of the overall identification mark and ensuring the use effect of the marking device 100. In addition, since the second body 2 does not extend beyond the upper edge of the side wall of the receiving groove 10, the second body 2 is located as a whole in the receiving groove 10, which can make the marking device 100 occupy less space and have a more compact structure.

[0039] In some other optional embodiments, refer to Figure 1A and Figure 1B , Figure 2A and Figure 2B ,as well as Figure 3A As shown, when the second body 2 is disposed in the receiving groove 10 , it may slightly extend beyond the upper edge of the side wall of the receiving groove 10 , but the thickness of the portion of the second body 2 extending beyond the upper edge of the side wall of the receiving groove 10 is less than or equal to 2 mm.

[0040] Based on this, at least one of the position and posture of the second body 2 can be adjusted more conveniently by using the portion of the second body 2 that extends beyond the upper edge of the side wall of the receiving groove 10; and, since the thickness of the portion of the second body 2 that extends beyond the upper edge of the side wall of the receiving groove 10 is less than or equal to 2 mm, within such a range, the second body 2 can also less or basically not block the partial identification mark outside the receiving groove 10 on the first body 1, and can also better ensure the integrity of the overall identification mark, and better ensure the use effect of the marking device 100.

[0041] In the embodiment of the present disclosure, at least one of the position and posture of the second body 2 can be adjusted in any manner. For example, in some optional embodiments, after the second body 2 is slid, rotated, or repositioned, at least one of the position and posture of the second body 2 relative to the first body 1 is adjusted.

[0042] Based on this, the marking device 100 can effectively adjust at least one of the position and posture of the second body 2 through the corresponding structure, so that it can be flexibly combined into different overall identification marks, so that the marking device 100 can be presented in a variety of different styles.

[0043] For example, refer to Figure 1A and Figure 1B In the example of the marking device 100 shown, the second body 2 is circular, and the receiving groove 10 of the first body 1 is a circular groove that is slightly larger or equal in size. The second body 2 is located in the receiving groove 10 as a whole. The second body 2 can be rotated in the receiving groove 10 to adjust its posture, so that part of the identification mark on the second body 2 rotates accordingly and combines with part of the identification mark on the first body 1 to form a different overall identification mark; or the second body 2 can be taken out of the receiving groove 10, and then placed in the receiving groove 10 again at a different angle to adjust its posture. It should be understood that Figure 1A and Figure 1B Two states of the example are shown, which combine to form two different overall identification marks.

[0044] For example, refer to Figure 2A and Figure 2B In the example of the marking device 100 shown, the second body 2 is a rectangle with rounded corners, and the receiving groove 10 of the first body 1 can be a rectangular groove with rounded corners that is larger than the second body 2. The second body 2 is disposed in the receiving groove 10. The second body 2 can be slid or pushed along the receiving groove 10 to adjust its position, so that part of the identification mark on the second body 2 moves accordingly and is combined with part of the identification mark on the first body 1 to form a different overall identification mark; or the second body 2 can be taken out of the receiving groove 10, and then placed back in the receiving groove 10 at a different angle, so as to adjust at least one of the position and posture. It should be understood that Figure 2A and Figure 2B Two states of the example are shown, which combine to form two different overall identification marks.

[0045] For example, refer to Figure 3AIn the example of the marking device 100 shown, the second body 2 is hexagonal, and the receiving slot 10 of the first body 1 can be a hexagonal slot larger than the second body 2. The second body 2 is arranged in the receiving slot 10. The second body 2 can be moved to different positions in the receiving slot 10 by sliding or pushing the second body 2, thereby adjusting at least one of its position and posture, so that part of the identification mark on the second body 2 moves accordingly, and is combined with part of the identification mark on the first body 1 to form a different overall identification mark; or the second body 2 can be taken out of the receiving slot 10, and then placed in the receiving slot 10 at a different angle, and at least one of the position and posture can also be adjusted. It should be understood that the above examples are only some optional examples and are not intended to limit the embodiments of the present disclosure.

[0046] In the present disclosure, Figure 1A to Figure 3C As shown, the partial identification marks on the first body 1 and the second body 2 may be patterns set on the first body 1 and the second body 2. Optionally, the patterns may be set on the first body 1 and the second body 2 by printing. The overall identification mark formed by the combination of the partial identification marks of the first body 1 and the second body 2 may be used as a tracking pattern of the visual recognition algorithm adopted by the visual recognition system.

[0047] The present disclosure does not specifically limit the type and function of the partial identification mark. Figure 1A to Figure 1D , Figure 2A to Figure 2C , Figure 3A to Figure 3B As shown, in some optional embodiments, the partial identification mark includes a first type partial identification mark 31 provided on the first body 1; the partial identification mark also includes a second type partial identification mark 32 provided on at least one of the first body 1 and the second body 2.

[0048] In some optional embodiments, the partial identification mark includes a first type partial identification mark provided on the first body, the first type partial identification mark is located at an outer edge of the first body and has the same shape as the outer edge of the first body. Optionally, the first type partial identification mark has a corner point.

[0049] Optionally, the first type partial identification mark 31 and the second type partial identification mark 32 are used for a first identification purpose and a second identification purpose, respectively.

[0050] Based on this, in the embodiment of the present disclosure, the first type partial identification mark 31 and the second type partial identification mark 32 are used for different identification purposes respectively, which can effectively adapt to the needs of the visual recognition system to use the marking device 100 to complete different operations according to identification, facilitate ensuring the use effect of the marking device 100, and meet the needs of users when using the visual recognition system.

[0051] Optionally, the overall identification mark formed by the marking device 100 may include both the first type partial identification mark 31 and the second type partial identification mark 32. With such first type partial identification mark 31 and second type partial identification mark 32, the use requirements of the marking device 100 by the visual recognition system are met.

[0052] In some optional embodiments, referring to Figure 1A to Figure 1D , Figure 2A to Figure 2C ,and Figure 3A to Figure 3B As shown, the second type partial identification mark 32 forms a rotationally asymmetric pattern, and the rotationally asymmetric pattern includes a plurality of identification corner points 321 .

[0053] Based on this, the second type partial identification mark 32 of the rotationally asymmetric pattern can provide at least posture information, such as angle information, for the overall identification mark formed by the marking device 100. In addition, the second identification purpose can be achieved through multiple identification corner points 321.

[0054] Optionally, multiple identification corner points 321 can be arranged in an irregular cross-arrangement to provide positioning information through the second type partial identification mark 32 with unique shape and characteristics, thereby increasing the uniqueness of the overall identification mark formed by the marking device 100 and making it easier to be identified in a visual recognition system (for example, for AR glasses).

[0055] For example, refer to Figure 1D , Figure 2C and Figure 3B As shown, the second type partial identification mark 32 can be formed by combining at least one of a black pattern and a white pattern, and the black pattern and the white pattern can be various suitable regular patterns including but not limited to rectangles, and can also include irregular patterns. In addition, the identification corner point 321 can be the corner point of its black pattern and / or white pattern. It should be understood that these examples are not intended to limit the embodiments of the present disclosure.

[0056] In addition to the first type part identification mark 31 and the second type part identification mark 32 described above, Figure 1A to Figure 3C As shown, in some optional embodiments, the partial identification mark also includes a third type partial identification mark 33 provided on the first body 1; the partial mark also includes a fourth type partial identification mark 34 provided on the second body 2; the third type partial identification mark 33 and the fourth type partial identification mark 34 are used together for the third identification purpose.

[0057] Based on this, in the embodiment of the present disclosure, the third type partial identification mark 33 on the first body 1 and the fourth type partial identification mark 34 on the second body 2 are used together for the third identification purpose, which can more effectively adapt to the needs of the visual recognition system to use the marking device 100 to complete different operations according to identification, and is more convenient to ensure the use effect of the marking device 100 and meet the needs of users when using the visual recognition system.

[0058] Optionally, the third recognition purpose may be to enable the visual recognition system to recognize the state of the overall recognition mark of the marking device 100 through the relative position and posture of the third type partial recognition mark 33 and the fourth type partial recognition mark 34. If the relative position and posture of the third type partial recognition mark 33 and the fourth type partial recognition mark 34 are different, the overall recognition mark is different (which may be combined with Figure 1A and Figure 1B , Figure 2A and Figure 2B ,as well as Figure 3A Then, the visual recognition system can implement different operations according to different overall recognition marks, thereby meeting the use requirements of the visual recognition system for the marking device 100.

[0059] Optionally, the first type partial identification mark 31 and the third type partial identification mark 33 may also be used together for the first identification purpose. In this case, the third type partial identification mark 33 may enhance the effect of achieving the first identification purpose.

[0060] Optionally, refer to Figure 1A and Figure 1B , Figure 2A and Figure 2B ,as well as Figure 3A As shown, in the overall identification mark formed by the marking device 100, a first type partial identification mark 31, a second type partial identification mark 32, a third type partial identification mark 33 and a fourth type partial identification mark 34 may exist simultaneously to better meet the visual recognition system's requirements for the use of the marking device 100.

[0061] In the disclosed embodiment, the size of the overall identification mark formed by the marking device 100 should not be too small, so as to ensure that it has more obvious marking features when using the visual recognition system (which can be applied to AR glasses), so as to obtain more identification feature point information, so that the visual recognition system can stably recognize and track various styles of overall identification marks in various scenarios, so as to meet the visual recognition system's use requirements for the marking device 100. The size of the marking device 100 can be designed according to the viewing distance (i.e., the distance from the camera lens of the visual recognition system to the marking device 100).

[0062] Optionally, the minimum diameter of the overall identification mark is greater than or equal to 7.5 cm. The minimum diameter may refer to the diameter of the largest inscribed circle of the overall identification mark. For example, within this range, the diameter of the largest inscribed circle may be selected as 7.5 cm, 8.0 cm, 8.5 cm, 8.0 cm, 8.5 cm, 10 cm, etc. as needed.

[0063] For example, in some optional embodiments, referring to Figure 1C , Figure 2C and Figure 3B As shown, the first type partial identification mark 31 is arranged outside the third type partial identification mark 33, and the first type partial identification mark has a line width greater than or equal to 4.5 mm.

[0064] Based on this, the embodiment of the present disclosure selects a line width of the first type of partial identification mark greater than or equal to 4.5 mm, which can ensure that the first type of partial identification mark occupies at least 1 pixel in the image captured at a preset viewing distance. The preset viewing distance can be, for example, 1 meter. It can ensure that the camera of the visual recognition system can effectively identify the first type of partial identification mark when shooting the overall identification mark formed by the marking device 100, so as to achieve the first identification purpose.

[0065] Optionally, refer to Figure 1C , Figure 2C and Figure 3B As shown, the first type partial identification mark 31 can be set as an outer frame pattern outside the third type partial identification mark 33, and the line width of the outer frame pattern is greater than or equal to 4.5mm. Within this range, a suitable line width can be selected as needed. For example, 4.5mm, 4.8mm, 5.0mm, 5.2mm, 5.4mm, 6mm, etc. The outer frame pattern can be a black frame, which can meet the requirement that the marking device 100 can be clearly identified when it is set in different color settings (for example, including but not limited to desktop, ground, etc.).

[0066] It should be understood that when the minimum diameter of the above-mentioned overall identification mark is greater than or equal to 7.5 cm and the first type of partial identification mark has a line width greater than or equal to 4.5 mm, the actual size of the overall identification mark of the marking device 100 can be determined according to the actual object-image relationship.

[0067] In some optional embodiments, referring to Figure 1A to Figure 1C , Figure 2A to Figure 2C ,and Figure 3A to Figure 3B As shown, the third type partial identification mark 33 forms a rotationally asymmetric pattern.

[0068] Based on this, in the embodiment of the present disclosure, the third type partial identification mark 33 of the rotational asymmetric pattern can provide direction information and rotation information for the overall identification mark formed by the marking device 100, so that it can be used together with the fourth type partial identification mark 34 for the third identification purpose, so as to more effectively adapt to the needs of the visual recognition system to use the marking device 100 to complete different operations based on identification.

[0069] For example, refer to Figure 1A to Figure 1C As shown, the third type partial identification mark 33 shown is an arc-shaped pattern on the first body 1, and the arc-shaped third type partial identification mark 33 includes a plurality of irregularly arranged black and white patterns, thereby forming a rotationally asymmetric pattern. Figure 2A to Figure 2C , Figure 3A to Figure 3B As shown, in the two optional marking devices 100 shown, the third type of partial identification mark 33 is a plurality of irregular patterns arranged at different positions on the first body 1, and each irregular pattern includes irregularly arranged black and white patterns, thereby forming a rotationally asymmetric pattern. It should be understood that these examples are not limitations on the embodiments of the present disclosure.

[0070] The fourth type of partial identification mark 34 in the embodiment of the present disclosure can be a rotationally symmetrical figure or a rotationally asymmetrical figure. It is set on the second body 2, and its relative position and posture with the third type of partial identification mark 33 on the first body 1 can be adjusted, so that the style of the overall identification mark can be changed.

[0071] Optionally, the fourth type partial identification mark 34 may include at least one acute angle greater than or equal to 30°. Based on this, the style of the overall identification mark can be changed by different relative positions and / or postures of the at least one acute angle greater than or equal to 30° included in the fourth type partial identification mark 34 and the third type partial identification mark 33 to achieve the third identification purpose, and the acute angle greater than 30° can ensure that the fourth type partial identification mark 34 can be recognized by the visual recognition system at a preset viewing distance, which can be, for example, 1m.

[0072] For example, refer to Figure 1A , Figure 1B and Figure 1D As shown, in some optional embodiments, the fourth type partial identification mark 34 includes an arrow mark 341, and the end of the arrow mark 341 is an acute angle that satisfies greater than or equal to 30°.

[0073] Based on this, the end of the arrow mark 341 included in the fourth type partial identification mark 34 can point to different positions of the third type partial identification mark 33 to achieve the third identification purpose; and the acute angle greater than 30° can ensure that the arrow mark 341 can be recognized by the visual recognition system at a preset viewing distance.

[0074] For example, Figure 1A and Figure 1B The second body 2 can be rotated (or the second body 2 is relocated) to adjust the posture of the arrow mark 341, so as to change the end of the arrow mark 341 to point to a different position of the third type part identification mark 33. It can be understood that the arrow mark 341 is also a rotationally asymmetric figure.

[0075] The acute angle greater than or equal to 30° described in the embodiments of the present disclosure can be selected according to the needs of the visual recognition system, such as 30°, 35°, 40°, 45°, 50°, 55°, 60°, etc.

[0076] For example, refer to Figure 2A , Figure 2B and Figure 2D As shown, in some optional embodiments, the fourth type of partial identification mark 34 includes an axisymmetric pattern. One or more of the acute angles within the axisymmetric pattern is greater than or equal to 30°. For example, Figure 2A and Figure 2B The different relative positions and / or postures of the acute angles of the fourth type partial identification mark 34 with respect to the third type partial identification mark 33 can be adjusted by sliding or pushing the second body 2 (or repositioning the second body 2).

[0077] In some optional embodiments, the overall identification mark further includes a background pattern. The background pattern may be, for example, a solid color background, a gradient color background, etc. The grayscale difference between the background pattern and the partial identification mark is greater than or equal to 90.

[0078] In some optional embodiments, the partial identification mark includes at least one of a black pattern and a white pattern. The overall identification mark also includes a background pattern, which is the other of a black pattern and a white pattern, and the black pattern and the white pattern form a corner point. As a result, the color contrast and strong distinction between the partial identification mark and the background pattern are achieved, thereby meeting the requirements of color cameras and grayscale cameras, and ensuring that the overall identification mark can be clearly identified by the visual recognition system under different environmental conditions and different shooting hardware.

[0079] In some optional embodiments, the partial identification mark may include at least one of a black pattern and a white pattern, and, with reference to Figure 1A to Figure 1D , Figure 2A to Figure 2C,and Figure 3A to Figure 3B As shown, the overall identification mark also includes a background pattern 35 other than the partial identification mark, and the grayscale value of the background pattern 35 in the grayscale mode is greater than or equal to 97 and less than or equal to 157.

[0080] Optionally, the partial identification mark includes at least a color pattern; wherein the grayscale value of the color pattern in the grayscale mode is greater than or equal to 97 and less than or equal to 157; the overall identification mark also includes a background pattern, and the background pattern is one of a black pattern and a white pattern.

[0081] Optionally, the partial identification mark includes at least a color pattern, and one of a black pattern and a white pattern; wherein the grayscale value of the color pattern in the grayscale mode is greater than or equal to 97 and less than or equal to 157; the overall identification mark also includes a background pattern, which is the other of the black pattern and the white pattern.

[0082] Based on this, high contrast and strong distinction of colors between the partial identification mark and the background pattern 35 in the overall identification mark of the marking device 100 can be guaranteed, and when the visual recognition system adopts a grayscale camera or a color camera for image acquisition, high contrast and strong distinction of colors between the partial identification mark and the background pattern can be guaranteed in the grayscale image of the overall identification mark obtained directly or through grayscale conversion, thereby adapting to the needs of color cameras and grayscale cameras, and ensuring that the overall identification mark can be clearly identified by the visual recognition system under different environmental conditions and different shooting hardware.

[0083] It is understandable that the background pattern 35 can be formed by combining the background patterns on the first body 1 and the second body 2 (can be combined with Figure 1C and Figure 1D As shown in the figure), it can also be formed by the background pattern on the first body 1 alone (can be combined with Figure 2C , Figure 3B shown in the understanding).

[0084] Optionally, a black or white pattern can be used as the fourth type partial identification mark 34 on the second body 2, and the background pattern can be a color; or a color pattern can be used as the fourth type partial identification mark 34, and the background pattern can be black or white. The fourth type partial identification mark 34 and the background pattern have a high grayscale contrast, which can meet the identification requirements.

[0085] Furthermore, within the above range of 97 to 157, the preferred range may be 107 to 147, within which a higher contrast ratio may be achieved and the distinction from black and white marks may be better.

[0086] For example, ink printing can be used to print partial identification marks and background patterns on the first body 1 and the second body 2. For example, the ink of the background pattern can be mixed in the following manner: first determine a suitable overall identification mark pattern design drawing, the pattern design drawing is RGB color, and the partial identification mark includes at least one of a black pattern and a white pattern; then, according to the pixel value (red, green, blue) of the RGB color of the background pattern of the selected overall mark pattern, the grayscale value of the color of the background pattern in the grayscale mode is calculated according to the general RGB to grayscale formula: "Grey = 0.2989*red+0.5870*green+0.1140*blue" (in the grayscale value, black takes a value of 0, white takes a value of 255, and the theoretical gray best value is 127). If the calculated grayscale value is within the range of 97 to 157, the printing ink can be mixed according to the general Pantone standard through the aforementioned RGB color; if it is not within the range of 97 to 157, the pattern design drawing can be modified again, and the ink can be adjusted according to the actual situation.

[0087] For example, according to the above method, assuming that the RGB pixel value of the background pattern in the design drawing of the overall identification mark is orange (for example, the RGB pixel value is: red (R): 210, green (G): 119, blue (B): 57), then RGB is converted to grayscale, Grey = 0.2989*210+0.587*119+0.114*57=139, that is, the grayscale value of the background pattern color in the grayscale mode is 139, which is within 97 to 157. Then, the orange ink can be mixed according to the RGB color according to the universal Pantone standard for printing.

[0088] For example, according to the above method, assuming that the RGB pixel value of the background pattern in the design drawing of the overall identification mark is green (for example, the RGB pixel value is: red (R): 73, green (G): 179, blue (B): 25), then RGB is converted to grayscale, Grey = 0.2989*73+0.587*179+0.114*25=129, that is, the grayscale value of the color of the background pattern in the grayscale mode is 129, which is within 97 to 157. Then, the green ink can be mixed according to the RGB color according to the universal Pantone standard for printing.

[0089] For example, according to the above method, assuming that the RGB pixel value of the background pattern in the design drawing of the overall identification mark is blue (for example, the RGB pixel value is: red (R): 3, green (G): 150, blue (B): 191), then RGB is converted to grayscale, Grey = 0.2989*3+0.587*150+0.114*191=110, that is, the grayscale value of the color of the background pattern in the grayscale mode is 110, which is within 97 to 157. Then, the blue ink can be mixed according to the RGB color according to the universal Pantone standard for printing.

[0090] It can be understood that the above contents are merely some optional embodiments of the marking device 100 in the embodiment of the present disclosure, and they do not constitute any limitation to the embodiment of the present disclosure.

[0091] In summary, the marking device 100 in the embodiment of the present disclosure, because its second body 2 is arranged on the first body 1, and at least one of the position and posture relative to the first body 1 can be changed, the partial identification marks arranged on the first body 1 and the second body 2 can be combined into different overall identification marks. Therefore, when using the marking device 100 in the embodiment of the present disclosure, it is not necessary to manufacture different marking devices 100 for each different overall identification mark, but it can be flexibly combined into different overall identification marks by flexibly adjusting at least one of the position and posture of the second body 2 of the marking device 100 on the first body 1, so that the marking device 100 presents a variety of different styles, and realizes a marking device 100 for multiple uses. The marking device 100 can effectively adapt to the needs of the visual recognition system for a variety of markers, and then can effectively reduce the cost of the marker, improve flexibility, and better meet the needs of users when using the visual recognition system.

[0092] The term "including" and its variations used in this article are open inclusions, that is, "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments". It should be noted that the concepts of "first", "second", etc. mentioned in the embodiments of the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units. It should be noted that the modifications of "one" and "multiple" mentioned in the embodiments of the present disclosure are illustrative and not restrictive. Those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more". It should be understood that the various features in the embodiments of the present disclosure can be combined in any suitable manner.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present disclosure, rather than to limit them. Although the embodiments of the present disclosure have 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 disclosure.

Claims

1. A marking device, comprising: First subject; a second body, disposed on the first body, and at least one of a position and a posture of the second body relative to the first body is changeable; Wherein, the first body and the second body are each provided with at least one partial identification mark, and the partial identification marks provided on the first body and the second body can be combined into different overall identification marks.

2. The marking device according to claim 1, wherein: The second body is removably disposed on the first body; a receiving groove is provided on the first body, and the second body is disposed in the receiving groove; The first subject and the second subject are two independent entities; After the second body is at least one of slid, rotated, and relocated, at least one of the position and posture of the second body relative to the first body is adjusted; When the second body is disposed in the receiving groove, it does not extend beyond the upper edge of the side wall of the receiving groove; or, when the second body is disposed in the receiving groove, the thickness of the portion extending beyond the upper edge of the side wall of the receiving groove is less than or equal to 2 mm.

3. The marking device according to claim 1 or 2, wherein: The partial identification mark includes at least one of a black pattern and a white pattern, and the overall identification mark further includes a background pattern, the background pattern is the other of the black pattern and the white pattern, and the black pattern and the white pattern form a corner point.

4. The marking device according to claim 1 or 2, wherein: The partial identification mark includes at least one of a black pattern and a white pattern, and the overall identification mark also includes a background pattern, and the grayscale value of the background pattern in the grayscale mode is greater than or equal to 97 and less than or equal to 157.

5. The marking device according to claim 1 or 2, wherein: The partial identification mark at least includes a color pattern; wherein the grayscale value of the color pattern in the grayscale mode is greater than or equal to 97 and less than or equal to 157; the overall identification mark also includes a background pattern, and the background pattern is one of a black pattern and a white pattern.

6. The marking device according to claim 1 or 2, wherein: The partial identification mark includes a first type of partial identification mark arranged on the first body; the partial identification mark also includes a second type of partial identification mark arranged on at least one of the first body and the second body, the first type of partial identification mark and the second type of partial identification mark are used for the first identification purpose and the second identification purpose respectively; the first type of partial identification mark is located at the outer edge of the first body and has the same shape as the outer edge of the first body; the second type of partial identification mark forms a rotationally asymmetric pattern, and the rotationally asymmetric pattern includes multiple identification corner points.

7. The marking device according to claim 6, wherein: The partial identification mark further includes a third type of partial identification mark provided on the first body; the partial identification mark further includes a fourth type of partial identification mark provided on the second body; the third type of partial identification mark and the fourth type of partial identification mark are used together for a third identification purpose; The first type partial identification mark is arranged outside the third type partial identification mark, and the first type partial identification mark has a line width greater than or equal to 4.5 mm; The third type of partial identification marks forms a rotationally asymmetric pattern; The fourth type partial identification mark includes at least one acute angle greater than or equal to 30°.

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