Macro 3D material scanning device and method

Abstract

The present invention provides a macro 3D material scanning device and method, comprising a side-shooting component, a top-shooting component, a turntable component, and a light source adjustment component; the turntable component is provided with a storage platform and a turntable that can rotate around the storage platform, and the storage platform remains stationary during the rotation of the turntable; the camera viewfinder lens of the side-shooting component is tilted downward and faces the surface of the storage platform; the camera viewfinder lens of the top-shooting component is vertically downward and faces the center of the surface of the storage platform, so that during the shooting process, the shooting axis is consistent with the center axis of the storage platform on the turntable; during the shooting process, the light source adjustment component plans a route according to a preset trajectory, moves at multiple longitude and / or latitude positions with continuous gradient changes above the scanning object, and emits polarized light; the side-shooting camera and the top-shooting camera shoot the scanning object at each continuously gradient changing position. The present invention can achieve infinite-angle light field construction and macro shooting scanning, improving the accuracy and consistency of subsequent three-dimensional reconstruction.

Description

Technical Field

[0001] The present invention relates to the field of image acquisition technology, in particular to full light field 3D material scanning technology, and more specifically to a macro 3D material scanning device and method. Background Art

[0002] To realistically recreate 3D objects, in addition to the object's 3D information, lighting effects are also required. Different surfaces exhibit different reflective properties under different lighting conditions, such as specular reflection and diffuse reflection. Light field technology can simulate reflective properties consistent with the object's surface, improving the fidelity of 3D object rendering or material surface reconstruction.

[0003] In the process of 3D material scanning and reconstruction, whether using traditional reconstruction or deep learning model-based algorithms, we hope to obtain enough photos of the reconstructed object, especially to impose light field conditions with sufficiently small gradient changes on the reconstructed object to improve the fineness and quality of the reconstructed image.

[0004] For example, in the full-light-field 3D material scanning device and its image processing method proposed in the Chinese patent application with publication number CN107580187A, a scanning device consisting of a shooting module, a rotation module, a shooting platform module and a main frame module is proposed. The number and shooting angle of the shooting platform modules are relatively simple, and the fixing method of the shooting platform modules is simple and complex. The main frame module has a simple and inflexible structure and occupies a large space as a whole. The number of LED lamps required to construct the full light field is large, which not only increases the cost, but also when different LED lamps are installed in the main frame module, in addition to the parameter differences of the LED lamps themselves, there are also subtle structural differences and distribution errors in various installation positions, angles, tightness, etc. These will cause the cumulative amplification of system errors, resulting in large reconstruction deviations and low precision defects, and the consistency and repeatability of the reconstruction cannot reach the ideal level.

[0005] Prior art literature:

[0006] Patent Document 1: CN107580187A A full light field 3D material scanning device and image processing method thereof

[0007] Patent Document 2: CN111897177A Adjustable fill light device for high-definition imaging

[0008] Patent Document 3: CN111965921A Multi-flash photography device for high-definition imaging Summary of the Invention

[0009] The present invention aims to provide a macro 3D material scanning device and method, which can improve the light consistency of full light field 3D scanning, reduce system errors, and improve the accuracy and consistency of subsequent three-dimensional reconstruction.

[0010] The present invention also aims to provide a macro 3D material scanning device and method, which can construct an ideal gradient-changing and configurable controllable light field around the photographed object, realize infinite-angle light field construction and macro photography scanning, and improve the accuracy and consistency of subsequent three-dimensional reconstruction.

[0011] According to a first aspect of the present invention, a macro 3D material scanning device is provided, comprising a side-viewing assembly, a top-viewing assembly, a turntable assembly, and a light source adjustment assembly disposed on a work platform;

[0012] The turntable assembly is provided with a storage platform and a turntable located at the bottom of the storage platform and capable of rotating around the storage platform, and the storage platform remains stationary during the rotation of the turntable;

[0013] The side shooting assembly is located on one side of the turntable assembly and is equipped with a side shooting camera, wherein the viewfinder lens of the side shooting camera is tilted downward and faces the surface of the storage table;

[0014] The overhead shooting assembly is located on the other side of the turntable assembly and is equipped with an overhead shooting camera. The viewfinder of the overhead shooting camera is vertically downward and toward the center of the surface of the storage platform, so that the shooting axis is always consistent with the center axis of the storage platform during the shooting process;

[0015] The light source adjustment component is disposed on one side of the turntable, and is used to emit polarized light toward a scanning object placed on the surface of the object placement table;

[0016] During the shooting process, the light source adjustment component is configured to move along a preset trajectory to a plurality of continuously gradient-changing longitude and / or latitude positions above the scanning object and emit polarized light;

[0017] The side camera and the overhead camera are configured to photograph the scanned object at each position with continuous gradient changes.

[0018] According to a second aspect of the present invention, a macro 3D material scanning method of a macro 3D material scanning device is also provided, comprising the following steps:

[0019] For the scanned object, a motion trajectory plan for the turntable and the light source adjustment assembly is configured. The trajectory plan includes the direction, rotation angle, and rotation period of the turntable around the object storage table, and the direction, rotation angle, and rotation period of multiple continuous gradient changes of the light source adjustment assembly above the scanned object corresponding to each first rotation angle;

[0020] The side shooting assembly and the overhead shooting assembly are configured to shoot sideways and overhead the scanned object at positions where the light source adjustment assembly moves above the scanned object corresponding to multiple continuous gradient changes at each rotation angle of the turntable;

[0021] During the scanning process of the scanning object, the light source adjustment component plans a route according to the set motion trajectory, moves at multiple longitude positions and / or latitude positions with continuous gradient changes above the scanning object, and emits polarized light toward the scanning object; at the positions of the light source adjustment component above the scanning object corresponding to the multiple continuous gradient change movements at each first rotation angle, the side shooting component and the overhead shooting component shoot the scanning object sideways and overhead.

[0022] It should be understood that all combinations of the foregoing concepts and the additional concepts described in more detail below, as long as such concepts are not mutually inconsistent, can be considered part of the inventive subject matter of this disclosure. In addition, all combinations of the claimed subject matter are considered part of the inventive subject matter of this disclosure.

[0023] The foregoing and other aspects, embodiments, and features of the present invention will be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the present invention, such as features and / or beneficial effects of the exemplary embodiments, will become apparent from the following description or through practice of specific embodiments according to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are not intended to be drawn to scale. In the accompanying drawings, each identical or approximately identical component shown in the various figures may be represented by the same reference numeral. For clarity, not every component is labeled in each figure.

[0025] Figure 1 3D material scanning device according to an embodiment of the present invention.

[0026] Figure 2 3D is a structural diagram of the macro 3D material scanning device according to an embodiment of the present invention in another direction.

[0027] Figure 3 4 is a front view of the side-shooting component of the macro 3D material scanning device according to an embodiment of the present invention.

[0028] Figure 4 3D is a schematic structural diagram of the side camera component of the macro 3D material scanning device according to an embodiment of the present invention in another direction.

[0029] Figure 5 2 is a schematic diagram of a first linear motion module of a side-shooting assembly of a macro 3D material scanning device according to an embodiment of the present invention.

[0030] Figure 6 It is a partial schematic diagram of the first linear motion module and the angle adjustment mechanism of the side-shooting assembly according to an embodiment of the present invention.

[0031] Figure 7-Figure 8 2 is a schematic diagram of the connection between the angle adjustment mechanism of the side-shooting assembly and the second and first linear motion modules according to an embodiment of the present invention.

[0032] Figure 9 3D is a structural diagram of the overhead shooting component of the macro 3D material scanning device according to an embodiment of the present invention.

[0033] Figure 10 3D is a schematic diagram of the combination of a turntable assembly and a light source adjustment assembly of a macro 3D material scanning device according to an embodiment of the present invention.

[0034] Figure 11 3D is a schematic structural diagram of a turntable assembly of a macro 3D material scanning device according to an embodiment of the present invention.

[0035] Figure 12 Schematic diagram of a light source adjustment component of a macro 3D material scanning device according to an embodiment of the present invention.

[0036] Figure 13 2 is a schematic diagram of a light source adjustment component of a macro 3D material scanning device according to an embodiment of the present invention in another direction.

[0037] Figure 14 It is a schematic diagram of the driving structure of the rotation adjustment module of the light source adjustment assembly according to an embodiment of the present invention.

[0038] Figure 15 Schematic diagram of a lifting adjustment module of a light source adjustment assembly according to an embodiment of the present invention.

[0039] Figure 16 Schematic diagram of a light source assembly of a light source adjustment assembly according to an embodiment of the present invention.

[0040] Figure 17 It is a schematic diagram of the light source assembly of the light source adjustment assembly according to an embodiment of the present invention from another direction.

[0041] Figure 18 It is a schematic diagram of a light source according to an embodiment of the present invention being inserted into a light source fixing seat. DETAILED DESCRIPTION

[0042] In order to better understand the technical content of the present invention, specific embodiments are given below in conjunction with the accompanying drawings.

[0043] Macro 3D material scanning device

[0044] The macro 3D material scanning device according to the embodiment shown in the accompanying drawings includes a side-mounted camera assembly 100, a top-mounted camera assembly 200, a turntable assembly 300, and a light source adjustment assembly 400, which are arranged on a work platform 1000. The side-mounted camera assembly 100 and the top-mounted camera assembly 200 are both equipped with cameras, which are designed to capture the subject placed on the turntable assembly 300. As the light source adjustment assembly 400 moves along a preset trajectory, the angle and position of light irradiating the subject move along the longitude / latitude direction on the hemisphere above the subject, achieving a uniform gradient change and obtaining an ideal light field environment. This solves the systematic error and low consistency of traditional multi-light source light field construction. The present invention uses a single light source to construct a light field with approximately infinite gradient adjustment, which can improve the accuracy and consistency of subsequent three-dimensional reconstruction.

[0045] Combine Figures 1 to 4 as well as Figures 10-14 In the example shown, the turntable assembly 300 is provided with a placement table 304 and a turntable 305 located at the bottom of the placement table 304 and rotatable around the placement table 304. During the rotation of the turntable 305, the placement table 304 remains stationary.

[0046] The side camera assembly 100 is located on one side of the turntable assembly 300 and is equipped with a side camera 150 . The viewfinder of the side camera 150 is tilted downward and faces the surface of the storage platform 304 .

[0047] The overhead camera assembly 200 is located on the other side of the turntable assembly 300 and is equipped with an overhead camera 240. The viewfinder of the overhead camera 240 is vertically downward and toward the center of the surface of the storage platform 304, so that the shooting axis of the overhead camera 240 is always consistent with the center axis of the storage platform 304 during the shooting process.

[0048] like Figures 10-14 As shown, the light source adjustment assembly 400 is disposed on one side of the turntable 305 to emit polarized light toward the scanning object placed on the surface of the object platform 304 .

[0049] During the shooting process, the light source adjustment component 400 is configured to move along a preset trajectory to a plurality of continuously gradient-changing longitude and / or latitude positions on a hemispherical surface above the scanning object and emit polarized light.

[0050] The side camera 150 and the overhead camera 240 are configured to photograph the scanned object at each position with continuous gradient changes.

[0051] Combined with attachment Figure 1 、 2In the example shown, the macro 3D material scanning device is also provided with a control box 2000, which contains a control system and control software for controlling and adjusting the side shooting component 100, the overhead shooting component 200, the turntable component 300 and the light source adjustment component 400, including but not limited to shooting control of the side shooting component 100 and the overhead shooting component 200, control of the rotation direction, angle and period of the turntable component 300, control of the rotation direction, angle and period of the light source adjustment component 400, etc.

[0052] In some optional embodiments, the control system can be configured to be controlled by a host computer, and / or to be configured to set parameters, adjust parameters, and control the process via a matching control panel through design and control software.

[0053] It should be understood that in the embodiment of the present invention, the cameras configured for the side shooting component 100 and the overhead shooting component 200 are both configured with polarizers and have the same polarization as the light source adjustment component 400 .

[0054] Combine Figure 1 、 2 As shown, along the surface of the work platform 1000, the line connecting the side shooting component 100 and the installation center of the work platform 1000 and the rotation axis of the turntable component 300 is defined as the first direction, and the line connecting the overhead shooting component 200 and the installation center of the work platform 1000 and the rotation axis of the turntable component 300 is defined as the second direction, then the above-mentioned first direction is orthogonal to the second direction.

[0055] The storage platform 304 remains stationary during the shooting process.

[0056] Side camera assembly 100

[0057] like Figure 1 、 2 Combined with Figures 3 to 8 As shown, as an optional embodiment, the side shooting assembly 100 includes a first linear motion module 110 installed perpendicular to the working platform 1000, a second linear motion module 130 at a certain angle to the first linear motion module 110, and an angle adjustment mechanism 120 connected between the first linear motion module 110 and the second linear motion module 130.

[0058] The second linear motion module 130 is fixedly mounted on the angle adjustment mechanism 120 and can move up and down along the first linear motion module 110 in a vertical direction along with the angle adjustment mechanism 120 .

[0059] The angle adjustment mechanism 120 is adjustably mounted to the moving portion of the first linear motion module 110, and can thereby be driven to move up and down by the moving portion of the first linear motion module 110. Figure 3 、4 As shown in , 8 , the angle adjustment mechanism 120 can adjust its angle in an appropriate manner to adjust the angle of the second linear motion module 120 relative to the first linear motion module 110 , thereby adjusting the angle of the side camera installed on the first linear motion module 110 .

[0060] like Figure 3 、 4 As shown, the side camera assembly 100 is configured with a first base 101 and a first fixing member 102. The first base 101 is fixed to the upper surface of the working platform 1000, and the first linear motion module 110 is fixed to the upper surface of the first base 101 through the first fixing member 102, thereby being installed at a corresponding position on the working platform 1000.

[0061] As shown in the figure, two first fixing members 102 can be configured to fix the first linear motion module 110 to the upper surface of the first base 101 from two opposite sides of the first linear motion module 110 .

[0062] like Figure 4 In the example shown, the first fixing member 102 can be an angle steel fixing member such as a stainless steel casting or a machined part. In particular, a triangular reinforcement structure can be added to the angle steel fixing member to improve the stability of the installation.

[0063] Combine Figures 3 to 8 In the example shown, the first linear motion module 110 includes a first fixed portion 111 and a first moving portion 112 , and a first surface of the angle adjustment mechanism 120 is fixed to the first moving portion 112 .

[0064] The second linear motion module 130 includes a second fixing portion 131 and a second moving portion 132 . The second surface opposite to the angle adjustment mechanism 120 is fixed to the second fixing portion 131 .

[0065] The second motion portion 132 of the second linear motion module 130 fixes the side camera 150 via the first camera connecting rod 135 and the side camera fixing portion 140 .

[0066] As an optional embodiment, the first fixed portion 111 and the second fixed portion 131 are both slide rails, and the first moving portion 112 and the second moving portion 132 are both sliders; the first moving portion 112 and the second moving portion 132 are both configured to be driven by corresponding motors.

[0067] like Figure 4 As shown, the first linear motion module 110 includes a first motor 113 for driving the first moving part 112 to move along the direction defined by the first fixed part 111, ie, up and down movement, through a screw moving pair, for example.

[0068] The second linear motion module 130 includes a second motor 133 for driving the second moving portion 132 to move along a direction defined by the second fixed portion 131 through a screw moving pair, for example.

[0069] Thus, the movement of the second moving portion 132 drives the first camera connecting rod 135 and the side camera fixing portion 140 to move, thereby adjusting the position of the side camera 150 .

[0070] Combine Figure 4 、 8 As shown, as an optional embodiment, the angle adjustment mechanism 120 is constructed to have at least one arc-shaped groove, and is fastened to the first fixing portion 111 of the first linear motion module 110 by a locking bolt in the arc-shaped groove; after releasing the locking bolt, the angle of the second linear motion module 130 relative to the first linear motion module 110 can be adjusted within the spatial range defined by the at least one arc-shaped groove to adjust the tilt angle of the side camera 150.

[0071] like Figure 4 As shown, reference numeral 118 denotes a harness channel, through which harnesses for power supply, control, etc. pass.

[0072] In the design shown in the figure, the angle adjustment mechanism 120 is provided with a first arc groove 121 located on the outside and a second arc groove 122 located on the inside. At least one first locking bolt 123 is provided in the spatial position defined by the first arc groove 121, and at least one second locking bolt 124 is provided in the spatial position defined by the second arc groove 122.

[0073] Thus, the position where the body of the angle adjustment mechanism 120 is fixed to the first moving part 112 is adjusted by the first locking bolt 123 and the second locking bolt 124 , thereby achieving angle adjustment.

[0074] Overhead shooting component 200

[0075] Combine Figure 1 、 2 As shown in FIG9 , the overhead camera assembly 200 as an optional embodiment includes a third linear motion module 210 installed perpendicular to the working platform 1000 , a second camera connecting rod 220 and an overhead camera fixing portion 230 .

[0076] The third linear motion module 210 is configured with a third fixed portion 211 and a third moving portion 212 that can be driven to move along the third fixed portion 211 .

[0077] One end of the second camera connecting rod 220 is fixed to the third moving part 212, and the other end is fixed to the overhead camera fixing part 230. The overhead camera 240 is installed on the overhead camera fixing part 230, and its viewfinder lens is vertically downward toward the center of the storage platform 304.

[0078] As an optional embodiment, the third fixing portion 211 is a slide rail structure, and the third moving portion 212 is configured as a slider structure.

[0079] like Figure 9 As shown, the third linear motion module 210 is further provided with a third motor 213 for driving the third moving part 212 of the third linear motion module 210 to move along the direction defined by the third fixed part 211, ie, up and down movement, through a screw moving pair, for example.

[0080] Combine Figure 9 As shown, the overhead camera assembly 200 is configured with a second base 201 and a second fixing member 202. The second base 201 is fixed to the upper surface of the working platform 1000, and the third linear motion module 210 is fixed to the upper surface of the second base 201 through the second fixing member 202, thereby being installed at a corresponding position of the working platform 1000.

[0081] As shown in the figure, two second fixing members 202 can be configured to fix the third linear motion module 210 to the upper surface of the second base 201 from two opposite sides of the third linear motion module 210 .

[0082] like Figure 9 In the example shown, the second fixing member 202 can be an angle steel fixing member such as a stainless steel casting or a machined part. In particular, a triangular reinforcement structure can be added to the angle steel fixing member to improve the stability of the installation.

[0083] It should be understood that the first base 101 and the second base 201 mentioned above can use the same structural components. The first fixing component 102 and the second fixing component 202 can also use the same structural components.

[0084] Turntable assembly 300

[0085] like Figure 10-11 As shown, as an optional embodiment, the turntable assembly 300 includes a turntable base 301 , a turntable support 302 , a turntable motor 303 , a storage platform 304 and a turntable 305 .

[0086] Combine Figure 10 As shown, the turntable 305 extends toward both sides, wherein a counterweight 306 is provided on one side adjacent to the side shooting assembly 100, and a light source adjustment assembly 400 is fixed above the other side, so that the turntable 305 drives the entire light source adjustment assembly 400 to rotate synchronously when rotating.

[0087] As an optional embodiment, the turntable assembly 300 is configured with a turntable base 301 fixed to the surface of the work platform 1000 and a turntable support 302 fixed to the surface of the turntable base 301 and used to support the turntable motor 303 and the turntable 305.

[0088] The turntable motor 303 drives the turntable 305 to rotate around the storage platform 304 through the transmission mechanism;

[0089] The turntable support 302 and the turntable 305 are both hollow structures. A storage table support is provided in the hollow position of the turntable support 302. The storage table support passes through the central through hole of the turntable 305 to support the storage table 304, so that the storage table 304 and the turntable 305 remain decoupled.

[0090] Therefore, according to the set light source adjustment motion trajectory planning, starting from the initial position of the turntable 305, at each horizontal position (corresponding to a longitude position), the light source adjustment component 400 is at the hemispherical position above the storage table, according to the preset rotation direction, rotation angle, and rotation period, thereby realizing continuous gradient movement along the latitude direction on the same hemisphere at a horizontal position, and at each movement position, the light source emits polarized light toward the scanning object placed on the storage table 304, and the aforementioned overhead shooting component and side shooting component simultaneously take photos of the scanning object.

[0091] After the continuous gradient motion at the same longitude position is completed, the turntable 305 is driven to rotate according to the preset rotation direction and rotation angle to reach the next progress position (horizontal direction), and then continuously moves along the latitude direction on the same hemisphere, and takes pictures at each position.

[0092] Repeat this process until the entire shooting process is completed.

[0093] Light source adjustment component 400

[0094] Combine Figure 12-16 As shown, as an optional embodiment, the light source adjustment assembly 400 includes a rotation adjustment module 410 , a lifting adjustment module 420 and a light source assembly 430 .

[0095] The light source assembly 430 is configured with a polarized light source and is configured to emit polarized light toward a scanning object placed on the surface of the stage 304 .

[0096] The light source assembly 430 is mounted on the lifting adjustment module 420 and can move synchronously with the lifting movement of the lifting adjustment module 420 .

[0097] The lifting adjustment module 420 is installed on the rotation adjustment module 410 and can be operated by the rotation adjustment module 410 to drive the light source assembly 430 and the lifting adjustment module 420 to rotate synchronously.

[0098] As an optional embodiment, the rotation adjustment module 410 is provided with a rotation motor 411 , a motor fixing seat 412 , a rotation transmission mechanism 413 , a rotation arm flange 414 and a rotation arm 415 .

[0099] The rotation adjustment module 410 is mounted on the turntable 305 via a motor fixing base 412 .

[0100] Combine Figure 12-14 As shown, the arm flange 414 is fixedly connected to the arm 415 , and the rotary motor 411 passes through the horizontal hole on the motor fixing seat 412 via the rotary transmission mechanism 413 to drive the arm flange 414 and the arm 415 to rotate synchronously around the central axis of the horizontal hole.

[0101] As an optional embodiment, during the movement of the rotating arm 415 , the axis of the light-emitting surface of the light source assembly 430 is always perpendicular to the central axis of the horizontal hole, that is, the rotation axis of the rotating arm 415 .

[0102] Combine Figure 12 、 14 As shown in FIG. 15 , as an optional embodiment, the lifting adjustment module 420 includes a screw rod 422 configured with a screw rod nut member 423 and a lifting arm 421 fixed to the screw rod nut member 423 .

[0103] Among them, one end of the screw rod 422 is supported at the bottom of the rotating arm 415 through a bearing, and the other end passes through the top of the rotating arm 415 and is configured with an adjusting handwheel 425. By operating the adjusting handwheel 425, the screw rod nut 423 can be lifted and lowered along the screw rod 422, thereby driving the light source assembly 430 to lift and lower.

[0104] Figure 16 The structure and installation diagram of the light source assembly 430 are exemplarily shown.

[0105] Combine Figure 1 、 2 as well as Figure 16 As shown, the light source assembly 430 is intended to emit polarized light toward a scanning object placed on the upper surface of the platform 304 .

[0106] exist Figure 16 、 17 In the structural design shown, the light source assembly 430 includes a connecting profile 431 , a light source rotating bracket 432 , an adjustment plate 433 , a light source fixing seat 434 , a light source rotating motor bracket 435 and a light source rotating motor 436 .

[0107] One end of the connecting profile 431 is fixed to the top of the lifting arm 421 and can be raised and lowered synchronously with the lifting arm 421 .

[0108] The other end of the connecting profile 431 is mounted with a light source rotating bracket 432. Figure 16 As shown, both sides of the light source rotating bracket 432 are installed into the narrow slots on both sides of the connecting profile 431 by bolts.

[0109] like Figure 16 、 17 In the example shown, the light source rotating bracket 432 can be adjusted forward and backward along the narrow slot to adjust its position, and can be fixed and locked at the stop position by the adjustment plate 433 located on the top of the connecting profile 431. Figure 17 As shown, flanges are formed on both sides of the light source rotating bracket 432, and corresponding screw holes are set at the flange positions. When adjusted into place, the screw holes set on the adjustment plate 433 are aligned with the screw holes of the flanges, and then the two are fixed together by bolts.

[0110] like Figure 16 、 17 As shown, the light source rotating motor bracket 435 is disposed at the front end of the light source rotating bracket 432 for supporting the light source rotating motor 436 .

[0111] The light source fixing seat 434 is located at the front end of the light source rotating bracket 432 and is fixedly matched with the light source rotating motor bracket 435. The light source fixing seat 434 is used for inserting a light source 438, such as an LED light source, which is powered by an external power supply. A polarizer 439 is provided at the bottom of the light source fixing seat 434 and at the front end of the light source. Figure 16 As shown, the output shaft of the light source rotating motor 436 is meshed with a polarizer rotating gear, and the polarizer rotating gear is rotated to drive the polarizer to rotate.

[0112] like Figure 18 As shown, the light source 438 is inserted into the light source fixing seat 434 and is lit by external power supply and control at the tail end of the light source.

[0113] Macro 3D material scanning method

[0114] In conjunction with the implementation of the above macro 3D material scanning device, a macro 3D material scanning method according to an embodiment of the present invention includes the following steps:

[0115] A motion trajectory plan is configured for the turntable 305 and the light source adjustment assembly 400 for the scanned object. The trajectory plan includes the direction, rotation angle, and rotation period of the turntable 305 around the object storage platform 304, as well as the direction, rotation angle, and rotation period of the light source adjustment assembly 400 over the scanned object corresponding to multiple continuous gradient changes at each first rotation angle.

[0116] The side camera assembly 100 and the overhead camera assembly 200 are configured to shoot the scanned object from the side and from the overhead when the light source adjustment assembly 400 is positioned above the scanned object and corresponds to a plurality of continuous gradient changes at each rotation angle of the turntable 305;

[0117] During the scanning process of the scanning object, the route is planned according to the set motion trajectory, and the longitude and / or latitude positions with continuous gradient changes above the scanning object are moved to emit polarized light toward the scanning object; at the position of the light source adjustment component 400 above the scanning object corresponding to the multiple continuous gradient change movements under each first rotation angle, the side shooting component 100 and the overhead shooting component 200 shoot the scanning object from the side and from above.

[0118] As an optional embodiment, the rotation control of the light source adjustment assembly 400 and the turntable 305 includes:

[0119] At any rotation angle position of the turntable 305, the light source adjustment assembly 400 performs continuous gradient motion along the hemispherical surface above the scanned object. The rotation angle of each motion of the light source adjustment assembly 400 is the same, and polarized light is emitted toward the scanned object at each motion position on the spherical surface.

[0120] After completing the shooting at the current rotation angle position of the turntable 305, the turntable 305 is controlled to rotate to the next rotation angle position in a predetermined direction, and the light source adjustment component 400 is controlled to perform continuous gradient motion along the spherical surface again;

[0121] Repeat this process until the entire shooting process is completed.

[0122] While the present invention has been disclosed above with reference to preferred embodiments, this is not intended to limit the present invention. Persons skilled in the art will readily appreciate that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the claims.

Claims

1. A macro 3D material scanning device, characterized in that: It comprises a side-shooting assembly (100), a top-shooting assembly (200), a turntable assembly (300), and a light source adjustment assembly (400) which are arranged on a working platform (1000); The turntable assembly (300) is provided with a storage platform (304) and a turntable (305) located at the bottom of the storage platform (304) and rotatable around the storage platform (304), and during the rotation of the turntable (305), the storage platform (304) remains stationary; The side shooting component (100) is located on one side of the turntable component (300) and is equipped with a side shooting camera (150), wherein the viewfinder lens of the side shooting camera (150) is tilted downward and faces the surface of the storage platform (304); The overhead shooting assembly (200) is located on the other side of the turntable assembly (300) and is equipped with an overhead shooting camera (240), wherein the viewfinder of the overhead shooting camera (240) is vertically downward and toward the center position of the surface of the storage platform (304), so that the shooting axis and the center axis of the storage platform (304) are always consistent during the shooting process; The light source adjustment component (400) is arranged on one side of the turntable (305) and is used to emit polarized light toward a scanning object placed on the surface of the object placement platform (304); Wherein, during the shooting process, the light source adjustment component (400) is configured to move at a plurality of continuously gradient-changing longitude positions and / or latitude positions above the scanning object according to a preset trajectory planning route, and emit polarized light; The side-shooting camera (150) and the overhead camera (240) are configured to photograph the scanned object at each position with a continuous gradient change; Wherein, along the surface of the working platform (1000), a line connecting the installation center of the side-viewing assembly (100) and the working platform (1000) and the rotation axis of the turntable assembly (300) is defined as a first direction, and a line connecting the installation center of the overhead viewing assembly (200) and the working platform (1000) and the rotation axis of the turntable assembly (300) is defined as a second direction, and the first direction and the second direction are orthogonal; The turntable assembly (300) is configured with a turntable base (301) fixed to the surface of the working platform (1000) and a turntable support (302) fixed to the surface of the turntable base (301) and used to carry a turntable motor (303) and a turntable (305); the turntable motor (303) drives the turntable (305) to rotate around the storage platform (304) through a transmission mechanism; The turntable support (302) and the turntable (305) are both hollow structures, and a storage platform support is provided at the hollow position of the turntable support (302). The storage platform support passes through the central through hole of the turntable (305) to support the storage platform (304), so that the storage platform (304) and the turntable (305) are decoupled. The light source adjustment component (400) is configured to move at a plurality of continuously gradient-varying longitude positions and / or latitude positions above the scanned object according to a preset trajectory planning route, and emit polarized light, specifically, through the rotation control of the light source adjustment component (400) and the turntable (305), so that: at any rotation angle position of the turntable (305), the light source adjustment component (400) performs continuous gradient movement along the hemispherical surface above the scanned object, the rotation angle of each movement of the light source adjustment component (400) is the same, and polarized light is emitted toward the scanned object at each movement position on the spherical surface; After completing the shooting at the current rotation angle position of the turntable (305), the turntable (305) is controlled to rotate to the next rotation angle position in a predetermined direction, and the light source adjustment component (400) is controlled to perform continuous gradient motion along the spherical surface again.

2. The macro 3D material scanning device according to claim 1, characterized in that: The storage platform (304) remains stationary during the filming process.

3. The macro 3D material scanning device according to claim 1, characterized in that: The turntable (305) extends toward both sides, wherein a counterweight is provided on one side adjacent to the side shooting assembly (100), and the light source adjustment assembly (400) is fixed above the other opposite side, so that the turntable (305) drives the entire light source adjustment assembly (400) to rotate synchronously when rotating.

4. The macro 3D material scanning device according to claim 1, characterized in that: The light source adjustment assembly (400) comprises a rotation adjustment module (410), a lifting adjustment module (420) and a light source assembly (430); The light source assembly (430) is configured with a polarized light source and is configured to emit polarized light toward the scanning object placed on the surface of the object platform (304); The light source assembly (430) is mounted on the lifting and adjusting module (420) and can move synchronously with the lifting and lowering movement of the lifting and adjusting module (420); The lifting adjustment module (420) is mounted on the rotation adjustment module (410) and can be operated by the rotation adjustment module (410) to drive the light source assembly (430) and the lifting adjustment module (420) to rotate synchronously.

5. The macro 3D material scanning device according to claim 4, characterized in that: The rotation adjustment module (410) is provided with a rotation motor (411), a motor fixing seat (412), a rotation transmission mechanism (413), a rotation arm flange (414) and a rotation arm (415); The rotation adjustment module (410) is mounted on the turntable (305) via a motor fixing seat (412); The rotating arm flange (414) is fixedly connected to the rotating arm (415), and the rotating motor (411) passes through the horizontal hole on the motor fixing seat (412) via the rotating transmission mechanism (413) to drive the rotating arm flange (414) and the rotating arm (415) to rotate synchronously around the central axis of the horizontal hole.

6. The macro 3D material scanning device according to claim 5, characterized in that: During the movement of the rotating arm (415), the axis of the light-emitting surface of the light source assembly (430) is always perpendicular to the central axis of the horizontal hole, that is, the rotation axis of the rotating arm (415).

7. The macro 3D material scanning device according to claim 5, characterized in that: The lifting and adjusting module (420) comprises a screw rod (422) equipped with a screw rod nut member (423) and a lifting arm (421) fixed to the screw rod nut member (423); one end of the screw rod (422) is supported at the bottom of the rotating arm (415) via a bearing, and the other end passes through the top of the rotating arm (415) and is equipped with an adjusting hand wheel (425). By operating the adjusting hand wheel (425), the screw rod nut member (423) is caused to perform lifting and lowering motion along the screw rod (422), thereby driving the light source assembly (430) to perform lifting and lowering motion.

8. The macro 3D material scanning device according to claim 1, characterized in that: The side-shooting assembly (100) comprises a first linear motion module (110) installed perpendicular to the working platform (1000), a second linear motion module (130) formed at a certain angle to the first linear motion module (110), and an angle adjustment mechanism (120) connected between the first linear motion module (110) and the second linear motion module (130); The angle of the second linear motion module (130) relative to the first linear motion module (110) can be adjusted by the angle adjustment mechanism (120).

9. The macro 3D material scanning device according to claim 8, characterized in that: The first linear motion module (110) comprises a first fixed portion (111) and a first moving portion (112), and the first surface of the angle adjustment mechanism (120) is fixed to the first moving portion (112); The second linear motion module (130) comprises a second fixed portion (131) and a second moving portion (132), and the second surface opposite to the angle adjustment mechanism (120) is fixed to the second fixed portion (131); The second motion part (132) of the second linear motion module (130) fixes the side camera (150) via the first camera connecting rod (135) and the side camera fixing part (140).

10. The macro 3D material scanning device according to claim 9, characterized in that: The first fixed portion (111) and the second fixed portion (131) are both slide rails, and the first moving portion (112) and the second moving portion (132) are both sliders; The first moving part (112) and the second moving part (132) are both configured to be driven by corresponding motors.

11. The macro 3D material scanning device according to claim 8, characterized in that: The angle adjustment mechanism (120) is constructed to have at least one arc-shaped groove, and is fastened to the first motion part (112) of the first linear motion module (110) via a locking bolt in the arc-shaped groove; After releasing the locking bolt, the angle of the second linear motion module (130) relative to the first linear motion module (110) can be adjusted within a spatial range defined by at least one arc-shaped slot to adjust the tilt angle of the side camera (150).

12. The macro 3D material scanning device according to claim 1, characterized in that: The overhead camera assembly (200) comprises a third linear motion module (210) installed perpendicularly to the working platform (1000), a second camera connecting rod (220), and an overhead camera fixing portion (230); The third linear motion module (210) is configured with a third fixed portion (211) and a third moving portion (212) that can be driven to move along the third fixed portion (211); One end of the second camera connecting rod (220) is fixed to the third moving part (212), and the other end is fixedly mounted on the overhead camera fixing part (230); the overhead camera is mounted on the overhead camera fixing part (230) and its viewfinder lens is vertically downward toward the center of the storage platform (304).

13. The macro 3D material scanning method according to any one of claims 1 to 12, characterized in that: The following steps are involved: For the scanned object, a motion trajectory planning of the turntable (305) and the light source adjustment component (400) is configured, wherein the trajectory planning includes the direction, rotation angle, and rotation period of the turntable (305) rotating around the object placement table (304), and the direction, rotation angle, and rotation period of a plurality of continuous gradient-changing motions of the light source adjustment component (400) corresponding to each first rotation angle above the scanned object; The side-shooting component (100) and the overhead shooting component (200) are configured to shoot sideways and overhead the scanned object at positions where the light source adjustment component (400) is positioned above the scanned object and corresponds to a plurality of continuous gradient changes at each rotation angle of the turntable (305); During the scanning process of the scanned object, the light source adjustment component (400) plans a route according to a set motion trajectory, moves at a plurality of continuously gradient-changing longitude positions and / or latitude positions above the scanned object, and emits polarized light toward the scanned object; at the position where the light source adjustment component (400) moves above the scanned object corresponding to the plurality of continuously gradient-changing movements at each first rotation angle, the side shooting component (100) and the overhead shooting component (200) shoot the scanned object from the side and from above.

14. The macro 3D material scanning method according to claim 13, characterized in that: The rotation control of the light source adjustment component (400) and the turntable (305) includes: At any rotation angle position of the turntable (305), the light source adjustment component (400) performs continuous gradient motion along the hemispherical surface above the scanning object, the rotation angle of each movement of the light source adjustment component (400) is the same, and polarized light is emitted toward the scanning object at each movement position on the hemispherical surface; After completing the photographing at the current rotation angle position of the turntable (305), controlling the turntable (305) to rotate to the next rotation angle position in a predetermined direction, and controlling the light source adjustment component (400) to perform continuous gradient motion along the hemispherical surface again; Repeat this process until the entire shooting process is completed.

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