A multi-view imaging system

Abstract

This invention relates to a multi-view imaging system, comprising a power unit, a detection unit, and a deformable prism device. The detection unit includes a universal joint, a detector, and a diaphragm, with the detector and diaphragm mounted on the universal joint. The deformable prism device includes a second busbar, a deformable prism, and a drive assembly. The deformable prism includes a telescopic adjustment rod assembly, a track, and a transparent film package. One end of the telescopic adjustment rod assembly is connected to the second busbar, and the other end is connected to the track. The transparent film package is filled with a medium and is disposed within the frame formed by the telescopic adjustment rod assembly. Compared with the prior art, this invention has the advantages of using a variable-attitude detector and a deformable prism device to achieve synchronous imaging from multiple perspectives; achieving multi-view imaging with different numbers and angles by adjusting the number and tilt angle of the outer surface of the deformable prism; realizing detector attitude adjustment, prism drive, and prism medium filling through a hydraulic and pneumatic device; and having a compact structure.

Description

Technical Field

[0001] This invention relates to the field of imaging technology, and in particular to a multi-view imaging system. Background Technology

[0002] Multi-view imaging technology plays a significant role in fields such as stereo imaging, visual measurement, and 3D reconstruction. Adjusting the number and angle of viewpoints has always been a crucial research topic in multi-view imaging technology.

[0003] After searching, it was found that in the existing technology (Cui Xiaoyu, Zhao Yue, Fan Qun'an, Wei Yongtao. Prism position estimation of monocular stereo vision system [J]. Journal of Northeastern University (Natural Science Edition), 2015, 36(06):765-768; Wang Daolei, Yang Feng. Research on stereo image correction based on geometric method [J]. Journal of Graphics, 2014, 35(06):883-888.), a combination of bisecting prisms or trisecting prisms with a camera is used to achieve multi-view imaging, but there is a problem that it is difficult to flexibly change the number and angle of the viewpoints according to different imaging or measurement requirements.

[0004] Application publication number CN112330794A discloses a single-camera image acquisition system and a 3D reconstruction method based on a rotating dichotomous prism. Specifically, the system includes a camera device and a rotating dichotomous prism device. The camera device includes a camera and a camera support bracket. The rotating dichotomous prism device includes a dichotomous prism, a prism support structure, a rotation mechanism, and a housing supporting the rotating dichotomous prism device. The 3D reconstruction method includes the following steps: system construction and parameter calibration, multi-view image sequence acquisition, stereo matching and cross-optimization, and 3D reconstruction and point cloud filtering. However, this existing technology still does not solve the problem of flexibly changing the number and angle of viewpoints according to different requirements.

[0005] In summary, the technical problem that needs to be solved is how to design an imaging system with a flexible and adjustable number of viewing angles and angles. Summary of the Invention

[0006] The purpose of this invention is to overcome the limitations of the number of viewpoints and angles in the existing technology and to provide a multi-view imaging system.

[0007] The objective of this invention can be achieved through the following technical solutions:

[0008] According to one aspect of the present invention, a multi-view imaging system is provided, including a power unit and a detection device, a first busbar, a main pipe and a deformable prism device respectively connected to the power unit;

[0009] The detection device includes a universal joint, a detector, and a diaphragm. The detector is mounted on the universal joint, the diaphragm is mounted inside the universal joint, and the universal joint is mounted on a first busbar. The first busbar and the deformable prism device are connected via a main pipe.

[0010] The deformable prism device includes a second busbar, a deformable prism, and a drive assembly. The deformable prism includes multiple telescopic adjustment rod assemblies, a track, and a transparent film package. One end of each telescopic adjustment rod assembly is hinged to the second busbar, and the other end is connected to the track. The transparent film package is filled with a medium and is disposed within the frame formed by the multiple telescopic adjustment rod assemblies. The drive assembly is mounted on the track and drives the telescopic adjustment rod assemblies.

[0011] As a preferred technical solution, the universal assembly includes a first bracket, a second bracket, a mounting plate, and a rotating structure. One end of the first bracket is mounted on a first busbar, and the other end is rotatably connected to the plane of the second bracket in a first direction. The mounting plate is rotatably connected to the plane of the second bracket in a second direction, and the first direction is perpendicular to the second direction. A detector is mounted on one side of the mounting plate, and the rotating structure is mounted on the other side.

[0012] As a preferred technical solution, the rotating structure includes a rocker arm, a sleeve, and a throttle valve. One end of the rocker arm is connected to the mounting plate, and the other end extends into the sleeve. The sleeve is mounted on the first busbar and has at least three thin films that wrap around the rocker arm evenly distributed inside.

[0013] As a preferred technical solution, the drive assembly includes a mounting assembly, a gear ring, a gear, and a motor. The gear ring is rotatably mounted on a track, the track is mounted on the motor and provides a driving medium for the motor, the gear is mounted on the motor, and the gear ring and the gear mesh with each other.

[0014] As a preferred technical solution, the mounting assembly includes a V-shaped roller, a V-shaped ring, and a short shaft. The track is a ring-shaped drive track. The V-shaped roller is mounted on the ring-shaped drive track via the short shaft and clamps the V-shaped ring. A toothed ring is mounted on the side of the V-shaped ring closest to the ring-shaped drive track.

[0015] As a preferred technical solution, the telescopic adjustment rod assembly includes an outer sleeve, a telescopic shaft, a guide tube, a baffle, and control valves. The outer sleeve has a first cavity in the middle, and the telescopic shaft is slidably connected in the first cavity with one end extending out of the outer sleeve and connected to the track. The first cavity is divided into two parts by the baffle. The telescopic shaft has a second cavity in the middle, and one end of the guide tube is installed in the second cavity. There are two control valves installed on the telescopic shaft, with the inlet connected to the second cavity and the outlets connected to the two parts of the first cavity respectively.

[0016] As a preferred technical solution, the telescopic adjustment rod assembly further includes a first sealing ring, a second sealing ring, an annular sleeve, and an electromagnet. The first sealing ring is installed between the baffle and the outer sleeve, the second sealing ring is installed between the guide tube and the telescopic shaft, the annular sleeve is installed at the end of the telescopic shaft that connects to the track and is sleeved on the track, and the electromagnet is installed on the annular sleeve.

[0017] As a preferred technical solution, the power device is a hydraulic device or a pneumatic device, including a pump, valves and pipelines. The medium provided by the pump is regulated by the valves and enters the detection device, the first manifold, the main pipeline and the deformable prism device through the pipeline.

[0018] As a preferred technical solution, the valves include a first overflow valve, a second overflow valve, a third overflow valve, and a first solenoid valve; the pipelines include pipe one, pipe two, pipe three, pipe four, and pipe five; the pump is connected to the first overflow valve, the first solenoid valve, and the third overflow valve via pipe one; the connection point between pipe one and the second overflow valve is connected to the second manifold via pipe four, and the connection point between pipe one and the third overflow valve is connected to a transparent film package via pipe five; the outlet of the first solenoid valve is connected to both ends of the first manifold via pipe three and pipe two, respectively.

[0019] As a preferred technical solution, the medium is a transparent liquid or transparent gas whose refractive index is not equal to that of air.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1) This invention combines a variable attitude detector with a deformable prism device, which can realize multi-view synchronous imaging in real time and efficiently; by adjusting the number of outer surfaces and tilt angle of the deformable prism, multi-view imaging with different numbers and angles can be achieved, which is more flexible and adaptable than bi-prisms or tri-prisms.

[0022] 2) This invention achieves the attitude adjustment of the detector, the driving of the prism, and the filling of the prism medium through a hydraulic or pneumatic device, resulting in a compact structure and a simple system.

[0023] 3) This invention uses a hydraulic or pneumatic drive method, which is highly adaptable to complex underwater or humid environments. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a multi-view imaging system according to the present invention;

[0025] Figure 2 This is a front view of the present invention, excluding the power unit;

[0026] Figure 3 For the present invention Figure 2 AA section diagram;

[0027] Figure 4 This is an attached view of the present invention, excluding the power unit;

[0028] Figure 5 For the present invention Figure 4 CC section view;

[0029] Figure 6 This is a cross-sectional view of the telescopic adjustment rod assembly of the present invention;

[0030] Figure 7 This is a test diagram of the telescopic adjustment rod assembly of the present invention;

[0031] Figure 8 This is a schematic diagram of the control valve structure of the present invention;

[0032] Figure 9 This is a schematic diagram illustrating the multi-angle imaging principle of the present invention.

[0033] The numbers in the diagram are as follows:

[0034] 1. Pump, 2. First overflow valve, 3. Second overflow valve, 4. Third overflow valve, 5. First solenoid valve, 6. Pipe 1, 7. Pipe 2, 8. Pipe 3, 9. Pipe 4, 10. Pipe 5, 11. Detection device, 11-1. First bracket, 11-2. First bearing, 11-3. First rotating shaft, 11-4. Second bracket, 11-5. Detector, 11-6. Mounting plate, 11-7. Second rotating shaft, 11-8. Second bearing, 11-9. Swing rod, 11-10. Sleeve, 11-11. Diaphragm, 11-12. Throttling valve, 12. First 13. Main pipe, 14. Transparent film wrap, 15. Second manifold, 16. Telescopic adjustment rod assembly, 16-1. Outer sleeve, 16-2. Control valve, 16-3. First sealing ring, 16-4. Telescopic shaft, 16-5. Second sealing ring, 16-6. Conduit, 16-7. Baffle, 16-8. Annular sleeve, 16-9. Electromagnet, 16-2-1. Check valve, 16-2-2. Second solenoid valve, 17. Rail, 18. V-ring, 19. Gear ring, 20. Short shaft, 21. V-shaped roller, 22. Gear, 23. Motor. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0036] like Figure 1 and Figure 2As shown, this embodiment provides a multi-view imaging system, including a power unit, a detection unit, a first busbar 12, a main pipe 13, and a deformable prism device.

[0037] The power unit can be either hydraulic or pneumatic, including a pump 1, valves, and pipelines. The valves include a first relief valve 2, a second relief valve 3, a third relief valve 4, and a first solenoid valve 5. The pipelines include pipe 1 (6), pipe 2 (7), pipe 3 (8), pipe 4 (9), and pipe 5 (10). The pump 1 is connected to the first relief valve 2 and solenoid valve 5 via pipe 1 (6), and to the second relief valve 3 and the third relief valve 4 via pipe 1 (6). At the connection point between pipe 1 (6) and the second relief valve 3, it is connected to the second manifold 15 via pipe 4 (9). At the connection point between pipe 1 (6) and the third relief valve 4, it is connected to the transparent membrane package 14 via pipe 5 (10). The outlet of solenoid valve 5 is connected to both ends of the first manifold 12 via pipe 3 (8) and pipe 2 (7). The first manifold 12 is connected to the annular drive pipeline 17 via two main pipelines 13. The flowing medium in the two main pipelines 13 is supplied by pipe 3 (8) and pipe 2 (7) through the first manifold 12.

[0038] The driving medium of pump 1 is either a transparent liquid or a transparent gas whose refractive index is not equal to that of air.

[0039] like Figure 3 , Figure 4 and Figure 5 As shown, the detection device 11 includes a universal joint, a detector 11-5, and a diaphragm 11-11. The universal joint includes a first bracket 11-1, a first bearing 11-2, a first rotating shaft 11-3, a second bracket 11-4, a mounting plate 11-6, a second rotating shaft 11-7, a second bearing 11-8, and a rotating structure. The rotating structure includes a swing arm 11-9, a sleeve 11-10, and a throttle valve 11-12. The first bracket 11-1 is mounted on the first busbar 10. One end of the first rotating shaft 11-3 is connected to the first bracket 11-1 through the first bearing 11-2, and the other end is fixedly connected to the second bracket 11-4. One end of the second rotating shaft 11-7 is connected to the second bracket 11-4 through the second bearing 11-8, and the other end is fixedly connected to the mounting plate 11-6. The detector 11-5 is fixedly mounted on the front end face of the mounting plate 11-6. One end of the swing rod 11-9 is mounted on the rear end face of the mounting plate 11-6, and the other end extends into the sleeve 11-10. The sleeve 11-10 is mounted on the first busbar 10. At least three diaphragms 11-11 are evenly distributed inside the sleeve 11-10. Each diaphragm forms a cavity with the sleeve 11-10. All the diaphragms 11-11 wrap the swing rod 11-9. The sleeve 11-10 controls the flow of the medium in the first busbar 10 into the cavity formed by the diaphragm and the sleeve 11-10 through the throttle valve 11-12.

[0040] Detectors 11-5 can be any one of a searchlight, camera, or laser.

[0041] like Figure 6 and Figure 7 As shown, the deformable prism device includes a second manifold 15, a deformable prism, and a drive assembly. The deformable prism includes multiple telescopic adjustment rod assemblies 16, a track 17, and a transparent film package 14. The drive assembly includes a mounting assembly, a gear ring 19, a gear 22, and a motor 23. The mounting assembly includes a V-shaped rod 21, a V-shaped ring 18, and a short shaft 20. The telescopic adjustment rod assembly 16 includes an outer sleeve 16-1, a control valve 16-2, a first sealing ring 16-3, a telescopic shaft 16-4, a second sealing ring 16-5, a conduit 16-6, a baffle 16-7, an annular sleeve 16-8, and an electromagnet 16-9. The first sealing ring 16-3 and the second sealing ring 16-5 are O-rings.

[0042] The outer sleeve 16-1 is slidably connected to the telescopic shaft 16-4. The outer sleeve 16-1 has a cavity in the middle and is divided into left and right cavities by a baffle 16-7. The baffle 16-7 is fixed on the telescopic shaft 16-4 and contacts the cavity of the outer sleeve 16-1 through the first sealing ring 16-3. The telescopic shaft 16-4 has a cavity in the middle. Two control valves 16-2 are fixed on the telescopic shaft 16-4. The inlet is connected to the cavity of the telescopic shaft 16-4, and the outlet is connected to the left and right cavities formed by the outer sleeve 16-1 and the baffle 16-7, respectively. The conduit 16-6 extends into the cavity of the telescopic shaft 16-4 and contacts the telescopic shaft 16-4 through the second sealing ring 16-5. The top of the telescopic shaft 16-4 is provided with an annular sleeve 16-8, which is fitted on the annular drive pipe 17. An electromagnet 16-9 is provided on the annular sleeve, which can attract the gear ring 19.

[0043] like Figure 8 As shown, the control valve 16-2 includes a check valve 16-2-1 and a solenoid valve 16-2-2. The inlet of the solenoid valve 16-2-2 is connected to the second manifold 15, and the two outlets of the solenoid valve 16-2-2 are respectively connected to two check valves 16-2-1 with opposite conduction directions.

[0044] Multiple telescopic adjustment rod assemblies 16 are fitted at one end onto a track 17, which is a ring-shaped drive track 17. The other end is hinged through a second busbar 15. The multiple telescopic adjustment rod assemblies 16 and the ring-shaped drive pipe 17 form a pyramidal frame. A transparent film package 14 is placed inside the pyramidal frame. The transparent film package 14 can be filled with a medium through a tube 10 to form a deformable prism. At least four V-shaped rods 21 are mounted on the ring-shaped drive pipe 17 through a short shaft 20 and clamp a V-shaped ring 18. A gear ring 19 is installed at the lower end of the V-shaped ring 18. A motor 23 is mounted on the ring-shaped drive pipe 17, and the ring-shaped drive pipe 17 provides a driving medium for the motor 23. A gear 22 is mounted on the motor 23 and meshes with the gear ring 19. The telescopic adjustment rod assemblies 16 and the gear ring 19 can be electromagnetically attracted. A detection device 11 is mounted on a first busbar 12 and arranged in front and behind the deformable prism formed by the telescopic adjustment rod assemblies 16, the ring-shaped drive pipe, and the transparent film package 14.

[0045] The working principle of this invention is as follows:

[0046] Pump 1 provides the driving medium to the first manifold 12 and the second manifold 15, and fills the transparent film package 14 with the medium. The flow direction of the medium in the first manifold 12 is adjusted by solenoid valve 5. The pressure within the multi-faceted cavity formed by the first overflow valve 2, the second overflow valve 3, and the third overflow valve 4 is kept constant. The telescopic adjustment rod assembly 16 engages with the gear ring 19 via electromagnet 16-9. The gear ring 19 drives the telescopic adjustment rod assembly 16 to slide on the annular drive pipe 17. Multiple telescopic adjustment rod assemblies 16 and the annular drive pipe 17 form a multi-faceted pyramidal frame with different surface combinations. The transparent film package 14, filled with the medium, is placed within the multi-faceted pyramidal frame, thus forming a deformable prism. Furthermore, the tilt angle of the outer surface of the deformable prism can be further adjusted by the extension and retraction of the telescopic adjustment rod assembly 16. The detection device 11, combined with the deformable prism, achieves simultaneous multi-view imaging.

[0047] The working principle of the detection device 11: The spatial universal structure formed by the first bracket 11-1, the first bearing 11-2, the first rotating shaft 11-3, the second bracket 11-4, the mounting plate 11-6, the second rotating shaft 11-7, and the second bearing 11-8 allows the detector 11-5 to be in a free state in space. The swing arm 11-9 is wrapped by at least three diaphragms 11-11. By adjusting the pressure inside the diaphragms 11-11 through the throttle valve, the expansion degree of each diaphragm 11-11 can be controlled, thereby adjusting the swing angle of the swing arm 11-9, and finally realizing the spatial pose adjustment of the detector 11-5.

[0048] like Figure 9As shown, during the operation of this invention, the detector 11-5 is combined with the deformable prism to achieve multi-angle imaging, and the number and angle of the imaging system can be adjusted.

[0049] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A multi-view imaging system, characterized in that, It includes a power unit and a detection device (11), a first busbar (12), a main pipe (13), and a deformable prism device, all connected to the power unit. The detection device (11) includes a universal assembly, a detector (11-5), and a diaphragm (11-11). The detector (11-5) is mounted on the universal assembly, and the diaphragm (11-11) is mounted inside the universal assembly. The universal assembly is mounted on a first busbar (12). The first busbar (12) and the deformable prism device are connected through a main pipe (13). The deformable prism device includes a second busbar (15), a deformable prism, and a drive assembly. The deformable prism includes multiple telescopic adjustment rod assemblies (16), a track (17), and a transparent film package (14). One end of the telescopic adjustment rod assembly (16) is hinged to the second busbar (15), and the other end is connected to the track (17). The transparent film package (14) is filled with a medium and is set within the frame formed by the multiple telescopic adjustment rod assemblies (16). The drive assembly is mounted on the track (17) and drives the telescopic adjustment rod assemblies (16).

2. The multi-view imaging system according to claim 1, characterized in that, The universal assembly includes a first bracket (11-1), a second bracket (11-4), a mounting plate (11-6), and a rotating structure. One end of the first bracket (11-1) is mounted on the first busbar (12), and the other end is rotatably connected to the plane of the second bracket (11-4) in a first direction. The mounting plate (11-6) is rotatably connected to the plane of the second bracket (11-4) in a second direction, and the first direction is perpendicular to the second direction. A detector (11-5) is mounted on one side of the mounting plate (11-6), and the rotating structure is mounted on the other side.

3. The multi-view imaging system according to claim 2, characterized in that, The rotating structure includes a rocker arm (11-9), a sleeve (11-10), and a throttle valve (11-12). One end of the rocker arm (11-9) is connected to the mounting plate (11-6), and the other end extends into the sleeve (11-10). The sleeve (11-10) is mounted on the first busbar (12) and has at least three thin films evenly distributed inside to wrap the rocker arm (11-9).

4. The multi-view imaging system according to claim 1, characterized in that, The drive assembly includes a mounting assembly, a gear ring (19), a gear (22), and a motor (23). The gear ring (19) is rotatably mounted on a track (17). The track (17) is mounted on the motor (23) and provides a driving medium for the motor (23). The gear (22) is mounted on the motor (23). The gear ring (19) and the gear (22) mesh with each other.

5. A multi-view imaging system according to claim 4, characterized in that, The mounting assembly includes a V-shaped rod (21), a V-shaped ring (18), and a short shaft (20). The track (17) is a ring drive track (17). The V-shaped rod (21) is mounted on the ring drive track (17) via the short shaft (20) and clamps the V-shaped ring (18). A toothed ring (19) is mounted on the side of the V-shaped ring (18) close to the ring drive track (17).

6. A multi-view imaging system according to claim 1, characterized in that, The telescopic adjustment rod assembly (16) includes an outer sleeve (16-1), a telescopic shaft (16-4), a guide tube (16-6), a baffle (16-7), and a control valve (16-2). The outer sleeve (16-1) has a first cavity in the middle. The telescopic shaft (16-4) is slidably connected in the first cavity and one end extends out of the outer sleeve (16-1) and is connected to the track (17). The first cavity is divided into two parts by the baffle (16-7). The telescopic shaft (16-4) has a second cavity in the middle. One end of the guide tube (16-6) is installed in the second cavity. There are two control valves (16-2), which are installed on the telescopic shaft (16-4). The inlet is connected to the second cavity, and the outlet is connected to the two parts of the first cavity respectively.

7. A multi-view imaging system according to claim 6, characterized in that, The telescopic adjustment rod assembly (16) further includes a first sealing ring (16-3), a second sealing ring (16-5), an annular sleeve (16-8), and an electromagnet (16-9). The first sealing ring (16-3) is installed between the baffle (16-7) and the outer sleeve (16-1). The second sealing ring (16-5) is installed between the guide tube (16-6) and the telescopic shaft (16-4). The annular sleeve (16-8) is installed at the end of the telescopic shaft (16-4) that is connected to the track (17) and is sleeved on the track (17). The electromagnet (16-9) is installed on the annular sleeve (16-8).

8. A multi-view imaging system according to claim 1, characterized in that, The power unit is a hydraulic or pneumatic device, including a pump (1), valves and pipelines. The medium provided by the pump (1) is regulated by the valves and enters the detection device (11), the first manifold (12), the main pipeline (13) and the deformable prism device through the pipeline.

9. A multi-view imaging system according to claim 8, characterized in that, The valves include a first overflow valve (2), a second overflow valve (3), a third overflow valve (4), and a first solenoid valve (5). The pipelines include pipe one (6), pipe two (7), pipe three (8), pipe four (9), and pipe five (10). The pump (1) is connected to the first overflow valve (2), the first solenoid valve (5), and the third overflow valve (4) through pipe one (6). The connection node between pipe one (6) and the second overflow valve (3) is connected to the second manifold (15) through pipe four (9), and the connection node between pipe one (6) and the third overflow valve (4) is connected to the transparent film package (14) through pipe five (10). The outlet of the first solenoid valve (5) is connected to both ends of the first manifold (12) through pipe three (8) and pipe two (7), respectively.

10. A multi-view imaging system according to claim 1, characterized in that, The medium is a transparent liquid or transparent gas whose refractive index is not equal to that of air.

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