3D head scanning device and system

Abstract

This invention provides a 3D head scanning device and system, comprising: a spherical shell, multiple image acquisition devices circumferentially distributed on the inner wall of the spherical shell, a main light source at the top of the spherical shell, and a control unit connected to both the image acquisition devices and the main light source; the bottom of the spherical shell has a through hole with an adjustable diameter; the control unit is configured to, upon receiving a 3D image acquisition command, generate a lighting control signal for the main light source and a shooting control signal for each image acquisition device; the main light source is configured to illuminate in response to the lighting control signal; the image acquisition devices are configured to capture images of the target human head in response to the shooting control signal, obtaining multiple planar images; the control unit is further configured to synthesize a 3D image of the target human head based on the multiple planar images. This technology can achieve efficient, accurate, comfortable, and convenient 3D data acquisition.

Description

Technical Field

[0001] This utility model relates to the field of three-dimensional imaging technology, and in particular to a 3D head scanning device and system. Background Technology

[0002] In recent years, with the development of digital healthcare, virtual makeup try-on, and customized helmets, the demand for high-precision 3D image acquisition of the human head has been increasing. Currently, commonly used 3D image acquisition devices are mainly based on technologies such as structured light, Time of Flight (ToF), or binocular stereo vision. However, in the specific application scenario of the human head, the following problems still urgently need to be solved: First, the significant difference in texture between hair and skin makes traditional devices prone to data loss or noise when processing highly reflective hair and relatively smooth skin; second, insufficient dynamic capture capability, as the head may undergo minute movements, making it difficult for existing devices to achieve real-time, stable, high-precision scanning; finally, insufficient comfort and convenience, with some devices requiring complex calibration procedures, making them unsuitable for rapid deployment and use.

[0003] Overall, traditional 3D head scanning devices are prone to data loss or noise due to the large differences in hair and skin materials. They also lack dynamic capture capabilities and are uncomfortable and inconvenient, making it difficult to meet the demand for high-precision, real-time, and stable 3D image acquisition of the human head. Utility Model Content

[0004] The purpose of this utility model is to provide a three-dimensional image acquisition device and system to alleviate the technical problems of traditional 3D head scanning devices, which are prone to data loss or noise due to the large differences in hair and skin materials, have insufficient dynamic capture capabilities, and are not comfortable and convenient, making it difficult to meet the needs of high-precision, real-time and stable 3D image acquisition of the human head. This invention improves dynamic capture capabilities while also providing comfort and convenience.

[0005] In a first aspect, this utility model provides a 3D head scanning device, comprising: a spherical shell, a plurality of image acquisition devices circumferentially distributed on the inner wall of the spherical shell, a main light source disposed on the top of the spherical shell, and a control unit connected to the image acquisition devices and the main light source; the bottom of the spherical shell is provided with a through hole of adjustable diameter; the control unit is configured to, upon receiving a 3D image acquisition command, generate a lighting control signal for the main light source and a shooting control signal for each of the image acquisition devices according to the 3D image acquisition command; the main light source is configured to perform a lighting operation in response to the lighting control signal; the image acquisition devices are configured to, in response to the shooting control signal, capture images of the target human head to obtain a plurality of planar images; the control unit is further configured to synthesize a 3D image of the target human head based on the plurality of planar images.

[0006] In a preferred embodiment of this utility model, the device further includes: a lifting structure; the spherical shell is disposed on the lifting structure; the lifting structure is connected to the control unit; the control unit is further configured to receive a power-on command and generate a raising control signal for the lifting structure; the lifting structure responds to the raising control signal and raises the spherical shell to a preset height so that the head of the target human body is directly below the through hole; when the head of the target human body is directly below the through hole, the control unit is further configured to receive a lowering command and generate a lowering control signal for the lifting structure; the lifting structure responds to the lowering control signal and lowers the spherical shell until the image acquisition device recognizes that the features of the head of the target human body meet the preset position requirements, and then stops lowering.

[0007] In a preferred embodiment of the present invention, the device further includes a base configured to provide the lifting structure and a seat located directly below the through hole.

[0008] In a preferred embodiment of the present invention, the device further includes a display connected to the control unit; the display is configured to display the planar image and the 3D image.

[0009] In a preferred embodiment of this utility model, the number of image acquisition devices is 78; the image acquisition devices are arranged at 5 preset horizontal positions distributed circumferentially around the spherical shell wall; the first horizontal position among the 5 preset horizontal positions is located at the lowest level of the spherical shell wall, and the first horizontal layer has 2 image acquisition devices; the second horizontal position among the 5 preset horizontal positions is located at a first preset distance from the first horizontal position, the second horizontal layer is located above the first horizontal layer, and the second horizontal layer has 21 image acquisition devices; the third horizontal position among the 5 preset horizontal positions is... A third horizontal layer is positioned at a second preset distance from the second horizontal position; the third horizontal layer is located above the second horizontal layer; the third horizontal layer is equipped with 23 image acquisition devices; the fourth horizontal position among the five preset horizontal positions is positioned at a third preset distance from the third horizontal position on a fourth horizontal layer; the fourth horizontal layer is located above the third horizontal layer; the fourth horizontal layer is equipped with 20 image acquisition devices; the fifth horizontal position among the five preset horizontal positions is positioned at a fourth preset distance from the fourth horizontal position on a fifth horizontal layer; the fifth horizontal layer is located above the fourth horizontal layer; the fifth horizontal layer is equipped with 12 image acquisition devices.

[0010] In a preferred embodiment of this utility model, the first preset distance is 18.6cm; the second preset distance is 12cm; the third preset distance is 19cm; and the fourth preset distance is 7cm.

[0011] In a preferred embodiment of this utility model, the device further includes: a plurality of auxiliary light sources distributed circumferentially on the inner wall of the spherical shell; all of the plurality of auxiliary light sources are connected to the control unit.

[0012] In a preferred embodiment of this utility model, the number of auxiliary light sources is 11.

[0013] In a preferred embodiment of this utility model, the above-mentioned device further includes: a connected switch and a router; the plurality of image acquisition devices are all connected to the switch; and the router is communicatively connected to the control unit.

[0014] Secondly, this utility model embodiment also provides a 3D head scanning system, including: the above-mentioned 3D head scanning device and a power supply connected to the above-mentioned 3D head scanning device.

[0015] The present invention has the following beneficial technical effects:

[0016] This utility model provides a 3D head scanning device and system, including: a spherical shell, multiple image acquisition devices circumferentially distributed on the inner wall of the spherical shell, a main light source disposed on the top of the spherical shell, and a control unit connected to the image acquisition devices and the main light source; the bottom of the spherical shell has a through hole with an adjustable diameter; the control unit is configured to, upon receiving a 3D image acquisition command, generate a lighting control signal for the main light source and a shooting control signal for each of the image acquisition devices; the main light source is configured to illuminate in response to the lighting control signal; the image acquisition devices are configured to capture images of the target human head in response to the shooting control signal, obtaining multiple planar images; the control unit is further configured to synthesize a 3D image of the target human head based on the multiple planar images. This technology, through the collaborative work of multiple image acquisition devices within the spherical shell and the main light source, can acquire planar images from all directions when the target human head is at the center of the sphere, and synthesize a 3D image of the target human head through the control unit, achieving efficient, accurate, and comfortable 3D data acquisition. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of a 3D head scanning device provided in an embodiment of this utility model;

[0019] Figure 2 A schematic diagram of another 3D head scanning device provided in an embodiment of this utility model;

[0020] Figure 3 A schematic diagram of the structure of the third type of 3D head scanning device provided in this embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of a 3D head scanning system provided in an embodiment of the present invention.

[0022] Icons: 11-Image acquisition device; 12-Main light source; 13-Control unit; 21-Heat dissipation device; 40-Spherical shell; 41-Lifting structure; 42-Base; 43-Seat; 51-3D head scanning system; 52-3D head scanning device; 53-Power supply. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Traditional 3D head scanning devices are prone to data loss or noise due to the large differences in hair and skin materials. They also lack dynamic capture capabilities and are uncomfortable and inconvenient, making it difficult to meet the demand for high-precision, real-time, and stable 3D image acquisition of the human head.

[0025] Based on this, this utility model provides a 3D head scanning device and system. This technology, through the coordinated operation of multiple image acquisition devices within a spherical shell and a main light source, can acquire planar images from all directions when the target human head is at the center of the sphere. These images are then synthesized into a 3D image of the target human head by a control unit, achieving efficient, accurate, and comfortable 3D data acquisition. For ease of understanding, a 3D head scanning device is first introduced.

[0026] Example 1

[0027] In this embodiment, Figure 1 This is a schematic diagram of the structure of a 3D head scanning device provided in an embodiment of the present invention.

[0028] Depend on Figure 1 As seen, the device includes: a spherical shell 40, a plurality of image acquisition devices 11 circumferentially distributed on the inner wall of the spherical shell, a main light source 12 disposed on the top of the spherical shell, and a control unit 13 connected to both the image acquisition devices 11 and the main light source 12; the bottom of the spherical shell 40 is provided with a through hole of adjustable diameter; the control unit 13 is configured to, upon receiving a 3D image acquisition command, generate a lighting control signal for the main light source 12 and a shooting control signal for each of the image acquisition devices 11 according to the 3D image acquisition command; the main light source 12 is configured to perform a lighting operation in response to the lighting control signal; the image acquisition devices 11 are configured to, in response to the shooting control signal, capture images of the target human head to obtain multiple planar images; the control unit 13 is also configured to synthesize a 3D image of the target human head based on the multiple planar images.

[0029] Here, the aforementioned multiple image acquisition devices 11 are evenly distributed circumferentially within the aforementioned spherical shell.

[0030] In actual operation, before the above-mentioned 3D image acquisition command is issued, the head of the target human body passes through the above-mentioned through hole, so that the head of the target human body is located at the center of the above-mentioned spherical shell 40.

[0031] Furthermore, the aforementioned target human head includes the user's shoulders, neck, and head.

[0032] The main light source 12 has the following parameters: an 800mm diameter circular embedded panel light, a power of 72W, a color rendering index (CRI) > 80, a power factor (PF) > 0.9, a color temperature of 5600K, and a PMMA acrylic light guide plate; the image acquisition device 11 can be an industrial camera.

[0033] Furthermore, the aforementioned control unit 13 is a PC, which is equipped with a keyboard, a monitor, and a mouse. The keyboard and mouse are configured to input the aforementioned 3D image acquisition commands.

[0034] In practical implementation, after receiving planar images of the target human head captured by multiple image acquisition devices, the control unit 13 analyzes and processes these planar images using image processing algorithms. First, key feature points are extracted from each planar image using feature point detection technology, and these feature points are mapped to a unified spatial coordinate system to ensure alignment of feature points across all images. Then, using multi-view geometry principles (such as triangulation), combined with the position and angle information of each image acquisition device, the specific position of each feature point in three-dimensional space is calculated, thereby generating a dense set of 3D point cloud data. Next, preprocessing operations such as smoothing and denoising are performed on the point cloud data to form a more accurate and complete 3D model surface. Finally, surface reconstruction algorithms (such as Poisson reconstruction or Marching Cubes algorithm) are used to transform the point cloud data into a continuous three-dimensional mesh model, ultimately completing the synthesis process of the 3D image of the target human head. For example, patent publication number CN113837201B provides a method for feature point extraction, an image reconstruction method, and an apparatus.

[0035] For ease of understanding, Figure 2 This is a schematic diagram of another 3D head scanning device provided in an embodiment of the present invention.

[0036] Depend on Figure 2 As seen above, the device also includes a plurality of heat dissipation devices 21 evenly disposed at the bottom of the spherical housing 40; the plurality of heat dissipation devices 21 are all connected to the control unit 13; the control unit 13 is configured to receive a 3D image acquisition command and generate a heat dissipation control signal for the heat dissipation device 21 according to the 3D image acquisition command; the heat dissipation device 21 is configured to perform heat dissipation operation in response to the heat dissipation control signal.

[0037] The number of image acquisition devices 11 is 78; the image acquisition devices 11 are arranged at 5 preset horizontal positions distributed circumferentially around the wall of the spherical shell 40; the first horizontal position of the 5 preset horizontal positions is located at the lowest horizontal layer of the spherical shell wall, and the first horizontal layer has 2 image acquisition devices 11; the second horizontal position of the 5 preset horizontal positions is located at a first preset distance from the first horizontal position; the second horizontal layer is located above the first horizontal layer; the second horizontal layer has 21 image acquisition devices 11; the third horizontal position of the 5 preset horizontal positions is located at a first preset distance from the first horizontal position. A third horizontal layer is located at a second preset distance from the second horizontal layer; the third horizontal layer is located above the second horizontal layer; the third horizontal layer is equipped with 23 image acquisition devices 11; the fourth horizontal position among the five preset horizontal positions is located at a third preset distance from the third horizontal position on the fourth horizontal layer; the fourth horizontal layer is located above the third horizontal layer; the fourth horizontal layer is equipped with 20 image acquisition devices 11; the fifth horizontal position among the five preset horizontal positions is located at a fourth preset distance from the fourth horizontal position on the fifth horizontal layer; the fifth horizontal layer is located above the fourth horizontal layer; the fifth horizontal layer is equipped with 12 image acquisition devices 11.

[0038] Specifically, the two image acquisition devices in the first horizontal layer are configured to capture plane images of the lower jaw of the head; 20 of the 21 image acquisition devices in the second horizontal layer are configured to capture plane images of the face of the head; 20 of the 1 image acquisition device in the second horizontal layer are configured to capture video streams of the face of the head; 22 of the 23 image acquisition devices in the third horizontal layer are configured to capture images of the upper forehead of the head; 1 of the 23 image acquisition devices in the third horizontal layer is configured to capture video streams of the upper forehead of the head; 20 image acquisition devices in the fourth horizontal layer are configured to capture plane images of the top of the head; and 12 image acquisition devices in the fifth horizontal layer are configured to capture plane images of the top of the head.

[0039] Furthermore, the first preset distance is 18.6cm; the second preset distance is 12cm; the third preset distance is 19cm; and the fourth preset distance is 7cm.

[0040] Furthermore, the device also includes a plurality of auxiliary light sources distributed circumferentially on the inner wall of the spherical housing 40; all of the plurality of auxiliary light sources are connected to the control unit 13.

[0041] The number of auxiliary light sources is 11.

[0042] Here, the control unit 13 is configured to receive a 3D image acquisition command and generate a lighting control signal for the auxiliary light source according to the 3D image acquisition command; the auxiliary light source is configured to perform a lighting operation in response to the lighting control signal for the auxiliary light source, so that the illumination on the target human head is soft and uniform.

[0043] This utility model provides a 3D head scanning device, including: a spherical shell, a plurality of image acquisition devices circumferentially distributed on the inner wall of the spherical shell, a main light source disposed on the top of the spherical shell, and a control unit connected to the image acquisition devices and the main light source; the bottom of the spherical shell has a through hole with an adjustable diameter; the control unit is configured to, upon receiving a 3D image acquisition command, generate a lighting control signal for the main light source and a shooting control signal for each of the image acquisition devices according to the 3D image acquisition command; the main light source is configured to perform a lighting operation in response to the lighting control signal; the image acquisition devices are configured to capture images of the target human head in response to the shooting control signal, obtaining multiple planar images; the control unit is further configured to synthesize a 3D image of the target human head based on the multiple planar images. This technology, through the collaborative work of multiple image acquisition devices and the main light source within the spherical shell, can acquire planar images from all directions when the target human head is at the center of the sphere, and synthesize a 3D image of the target human head through the control unit, achieving efficient, accurate, and comfortable 3D data acquisition.

[0044] Example 2

[0045] Based on the above embodiments, Figure 3 This is a schematic diagram of the structure of the third type of 3D head scanning device provided in this embodiment of the utility model.

[0046] Depend on Figure 3 As seen above, the device further includes: a lifting structure 41; the spherical housing 40 is disposed on the lifting structure 41; the lifting structure 41 is connected to the control unit 13; the control unit 13 is also configured to receive a power-on command and generate a raising control signal for the lifting structure 41; the lifting structure 41 responds to the raising control signal and drives the spherical housing to rise to a preset height so that the head of the target human body is directly below the through hole; when the head of the target human body is directly below the through hole, the control unit is also configured to receive a descent command and generate a descent control signal for the lifting structure 41; the lifting structure 41 responds to the descent control signal and drives the spherical housing to descend until the image acquisition device 11 recognizes that the features of the head of the target human body meet the preset position requirements, and then stops descending.

[0047] Here, when the features of the target human head meet the preset position requirements, the target human head is located at the center of the spherical shell.

[0048] Furthermore, the device also includes a base 42 configured to house the lifting structure 41, and a seat 43 located directly below the through hole.

[0049] Furthermore, the device also includes a display connected to the control unit 13; the display is configured to display the planar image and the 3D image.

[0050] In some embodiments, the device further includes: a connected switch and a router; the plurality of image acquisition devices 11 are all connected to the switch; and the router is communicatively connected to the control unit 13.

[0051] This utility model embodiment provides a 3D head scanning device, including: a spherical shell, a plurality of image acquisition devices circumferentially distributed on the inner wall of the spherical shell, a main light source disposed on the top of the spherical shell, and a control unit connected to the image acquisition devices and the main light source; the bottom of the spherical shell is provided with a through hole of adjustable diameter; the control unit is configured to, upon receiving a 3D image acquisition command, generate a lighting control signal for the main light source and a shooting control signal for each of the image acquisition devices according to the 3D image acquisition command; the main light source is configured to perform a lighting operation in response to the lighting control signal; the image acquisition devices are configured to, in response to the shooting control signal, capture images of the target human head to obtain multiple planar images; the control unit is further configured to, based on the multiple planar images... The device synthesizes a 3D image of the target human head. The device further includes a lifting structure; a spherical shell is mounted on the lifting structure; the lifting structure is connected to a control unit; the control unit is configured to receive a power-on command and generate a raising control signal for the lifting structure; the lifting structure responds to the raising control signal, raising the spherical shell to a preset height so that the target human head is directly below the through hole; when the target human head is directly below the through hole, the control unit is also configured to receive a descent command and generate a descent control signal for the lifting structure; the lifting structure responds to the descent control signal, lowering the spherical shell until the image acquisition device recognizes that the features of the target human head meet the preset position requirements, at which point the descent stops. This technology, through the collaborative work of multiple image acquisition devices and a main light source within the spherical shell, combined with the intelligent signal generation and processing capabilities of the control unit and the precise positioning function of the lifting structure, achieves efficient and accurate acquisition and synthesis of a 3D image of the target human head, significantly improving the automation and accuracy of image acquisition.

[0052] Example 3

[0053] Based on the above embodiments, Figure 4 This is a schematic diagram of the structure of a 3D head scanning system provided in an embodiment of the present invention.

[0054] Depend on Figure 4 As seen, the 3D head scanning system 51 includes the 3D head scanning device 52 of the above embodiment and a power supply 53 connected to the 3D head scanning device 52.

[0055] The 3D head scanning system provided in this embodiment of the present invention has the same technical features as the 3D head scanning device provided in the above embodiments, and therefore can solve the same technical problems and achieve the same technical effects. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the 3D head scanning system described above can be referred to the operating process of the 3D head scanning device in the foregoing embodiments, and will not be repeated here.

[0056] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0057] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0058] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only configured for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0059] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0060] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0061] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

Claims

1. A 3D head scanning device, characterized in that, include: The spherical shell, multiple image acquisition devices circumferentially distributed on the inner wall of the spherical shell, a main light source disposed on the top of the spherical shell, and a control unit connected to the image acquisition devices and the main light source; the bottom of the spherical shell is provided with a through hole of adjustable diameter; The control unit is configured to, upon receiving a 3D image acquisition command, generate a lighting control signal for the main light source and a shooting control signal for each of the image acquisition devices, based on the 3D image acquisition command. The main light source is configured to perform a lighting operation in response to the lighting control signal; The image acquisition device is configured to capture an image of the target human head in response to the shooting control signal, thereby obtaining multiple planar images; The control unit is also configured to synthesize a 3D image of the target human head based on the plurality of planar images.

2. The 3D head scanning device according to claim 1, characterized in that, The device further includes: a lifting structure; the spherical shell is disposed on the lifting structure; the lifting structure is connected to the control unit; The control unit is also configured to receive a power-on command and generate a lifting control signal for the lifting structure. The lifting structure responds to the lifting control signal and raises the spherical shell to a preset height so that the head of the target human body is directly below the through hole; When the head of the target human body is directly below the through hole, the control unit is also configured to receive a descent command and generate a descent control signal for the lifting structure. The lifting structure responds to the descent control signal, causing the spherical shell to descend until the image acquisition device identifies that the features of the target human head meet the preset position requirements, at which point the descent stops.

3. The 3D head scanning device according to claim 2, characterized in that, The device also includes a base configured to house the lifting structure; and a seat located directly below the through hole.

4. The 3D head scanning device according to claim 1, characterized in that, The device also includes a display connected to the control unit; the display is configured to display the planar image and the 3D image.

5. The 3D head scanning device according to claim 1, characterized in that, The number of image acquisition devices is 78; the image acquisition devices are set at 5 preset horizontal positions distributed circumferentially on the wall of the spherical shell; The first horizontal position among the five preset horizontal positions is set in the lowest horizontal layer distributed circumferentially on the spherical shell wall, and the first horizontal layer is equipped with two image acquisition devices. The second horizontal position among the five preset horizontal positions is set at a second horizontal layer at a first preset distance from the first horizontal position; the second horizontal layer is located above the first horizontal layer; the second horizontal layer is equipped with 21 image acquisition devices; The third horizontal position among the five preset horizontal positions is set at a third horizontal layer at a second preset distance from the second horizontal position; the third horizontal layer is located above the second horizontal layer; and 23 image acquisition devices are installed on the third horizontal layer. The fourth horizontal position among the five preset horizontal positions is set at a third preset distance from the third horizontal position in the fourth horizontal layer; the fourth horizontal layer is located above the third horizontal layer; and 20 image acquisition devices are installed in the fourth horizontal layer. The fifth horizontal position among the five preset horizontal positions is set at a fourth preset distance from the fourth horizontal position; the fifth horizontal layer is located above the fourth horizontal layer; and the fifth horizontal layer is equipped with 12 image acquisition devices.

6. The 3D head scanning device according to claim 5, characterized in that, The first preset distance is 18.6cm; the second preset distance is 12cm; the third preset distance is 19cm; and the fourth preset distance is 7cm.

7. The 3D head scanning device according to claim 1, characterized in that, The device further includes a plurality of auxiliary light sources distributed circumferentially on the inner wall of the spherical shell; all of the plurality of auxiliary light sources are connected to the control unit.

8. The 3D head scanning device according to claim 7, characterized in that, The number of auxiliary light sources is 11.

9. The 3D head scanning device according to claim 1, characterized in that, The device also includes: a connected switch and a router; All of the multiple image acquisition devices are connected to the switch; The router is communicatively connected to the control unit.

10. A 3D head scanning system, characterized in that, include: The 3D head scanning device according to any one of claims 1 to 9 and the power supply connected to the 3D head scanning device.

Images