Quickly disassemblable synchronous calibration multi-view small-range multi-dimensional motion capture device

Abstract

The present invention discloses a synchronously calibrated multi-view small-range multi-dimensional motion capture device that can be quickly disassembled and assembled, which relates to the technical field of motion capture devices. It includes two bottom supports, and support bridges are provided at the ends of the bottom supports. Two support bridges at the same end of the two bottom supports are respectively connected to both ends of the camera support plate, and the other two support bridges are respectively connected to both ends of the calibrator support plate. The bottom support and the support bridge, the support bridge and the camera support plate, and the support bridge and the calibrator support plate are all connected through the first quick disassembly and assembly component; at least two cameras are provided on the camera support plate, and a calibrator is provided on the calibrator support plate. The camera and the camera support plate, and the calibrator and the calibrator support plate are all connected through the second quick disassembly and assembly component. The present invention adopts a synchronously calibrated multi-view small-range multi-dimensional motion capture device with the above structure to achieve the rapid deployment and efficient use of the motion capture device.

Description

Technical Field

[0001] The present invention relates to the technical field of motion capture, and in particular to a synchronously calibrated multi-view small-range multi-dimensional motion capture device that can be quickly disassembled and assembled. Background Art

[0002] A motion capture system is a high-tech device used to accurately measure the motion status of a moving object in three-dimensional space. Based on the principle of computer graphics, it records the motion status of the moving object (tracker) in the form of images through several video capture devices arranged in space, and then uses a computer to process the image data to obtain the spatial coordinates (X, Y, Z) of different objects (trackers) at different time measurement units.

[0003] Motion capture systems are now widely used. For example, in the medical industry, a motion capture device that uses cameras and calibrators to extract acupuncture manipulation data. The cameras and calibrators usually require a complex disassembly and installation process, which not only increases the workload of operators but also may cause damage or errors in the device during repeated use. In addition, the prior art has the problem of low accuracy during the calibration process, which affects the accuracy of the captured motion data and thus the effect of subsequent data analysis and application. The characteristics of cumbersome operation and time-consuming also make the prior art less efficient in practical applications and unable to meet the user's demand for fast and accurate motion capture.

[0004] A quick-disassembly and assembly mechanism with the application number CN202123239423.3 includes a quick-assembly main body and a quick-assembly plate detachably connected to the top of the quick-assembly main body. A cavity is provided inside the quick-assembly main body. A cam block is rotatably arranged at the center inside the quick-assembly main body. A return elastic member is arranged between the cam block and the inner wall of the cavity. Lock blocks for buckling the quick-assembly plate are movably arranged on both sides inside the quick-assembly main body. The cam block is located between the two lock blocks. A locking elastic member is arranged on the side surface of the lock block away from each other, and the locking elastic member abuts against the inner wall of the cavity. Arc-shaped convex blocks for slidingly abutting against the lock blocks are arranged on both sides of the cam block. When the cam block is rotated, the arc-shaped convex blocks are used to push the two lock blocks apart to make them move away from each other. Although the above structure can achieve the quick assembly and disassembly of the quick-assembly main body and the quick-assembly plate, is convenient to use, has a long service life, reduces wear, and improves the stability and reliability of the quick-disassembly and assembly mechanism, it is not applicable to synchronously calibrated multi-view small-range multi-dimensional motion capture, and the complex structure causes the problem of high equipment cost.

[0005] To solve the above problems, a synchronously calibrated multi-view small-range multi-dimensional motion capture device that can be quickly disassembled and assembled is needed. Summary of the Invention

[0006] The purpose of the present invention is to provide a synchronously calibrated multi-perspective, small-range, multi-dimensional motion capture device that can be quickly disassembled and assembled, so as to solve the problems of high cost, low efficiency, time consumption, etc. in the prior art. By simplifying the disassembly and assembly process, improving the calibration accuracy and optimizing the operation method, the motion capture device can be quickly deployed and used efficiently, thereby improving the performance of the overall system and user experience.

[0007] To achieve the above-mentioned purpose, the present invention provides a synchronous calibration multi-viewing angle small-range multi-dimensional motion capture device that can be quickly disassembled and assembled, comprising two bottom supports arranged in parallel, the ends of the bottom supports are provided with support bridges, the two support bridges located at the same end of the two bottom supports are respectively connected to the two ends of a camera support plate, and the other two support bridges are respectively connected to the two ends of a calibrator support plate, and the bottom supports and the support bridges, the support bridges and the camera support plate, and the support bridges and the calibrator support plate are all connected through a first quick disassembly assembly;

[0008] At least two cameras are arranged on the camera support plate, a calibrator is arranged on the calibrator support plate, and the cameras and the camera support plate, and the calibrator and the calibrator support plate are connected via a second quick disassembly assembly.

[0009] Preferably, the first quick disassembly and assembly assembly includes a fixed cylinder, a rotating rod and a ball, the fixed cylinder is integrally connected to the support bridge, the camera support plate or the calibrator support plate, a guide groove and a locking groove are provided in the fixed cylinder, the rotating rod is located in the guide groove, a latch is provided on the rotating rod, the inner wall of the guide groove is provided with a spiral track compatible with the latch structure, the bottom end of the rotating rod is provided with a protrusion extending into the locking groove, the distance between the outer wall of the protrusion and the groove wall of the locking groove gradually increases from top to bottom, the bottom surface of the protrusion is connected to the baffle through a first bolt, the top of the rotating rod extends out of the guide groove and is connected to the handle, there are at least two balls and they are located on the baffle, the balls are arranged corresponding to the circular holes on the side walls of the locking groove, the diameter of the circular holes is smaller than the diameter of the balls, and the bottom support and the support bridge are both provided with arc-shaped grooves arranged corresponding to the circular holes.

[0010] Preferably, the second quick-disassembly assembly includes a base, a buckle, a connecting rod and a triangular prism-shaped mounting hole, the top surface of the base is provided with a mounting groove compatible with the camera or the calibrator structure, the bottom surface of the base is fixedly connected to the connecting rod, the connecting rod is provided with a buckle and a spring, the spring is located between the buckle and the support plate at the bottom end of the connecting rod, the buckle is compatible with the triangular prism-shaped mounting hole structure, the triangular prism-shaped mounting hole is located on the camera support plate and the calibrator support plate and is arranged corresponding to the camera and the calibrator.

[0011] Preferably, the handle and the rotating rod are connected by a second bolt.

[0012] Preferably, a first card slot adapted to the support bridge structure is provided on the bottom support, a second card slot adapted to the structure of the camera support plate or the calibrator support plate is provided on the support bridge, and arc-shaped grooves are provided in both the first card slot and the second card slot.

[0013] Preferably, a plurality of through holes evenly distributed are provided on the bottom support.

[0014] Therefore, the synchronously calibrated multi-view small-range multi-dimensional motion capture device with the above structure according to the present invention has the following beneficial effects:

[0015] 1. The first quick disassembly and assembly component and the second quick disassembly and assembly component can realize the rapid deployment and efficient use of the motion capture device. After the first quick disassembly and assembly component is self-locked, the convex block, the spherical ball and the arc-shaped groove are used to achieve complete fitting without shaking, increasing the stability of the mechanism;

[0016] 2. Two cameras and a calibrator are in absolute positions and can be independent as a coordinate, eliminating the need for separate calibration each time, improving the accuracy and convenience of calibration, and being more conducive to the extraction of acupuncture manipulation data.

[0017] The technical solutions of the present invention will be further described in detail below with reference to the drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of an embodiment of the synchronously calibrated multi-view small-range multi-dimensional motion capture device with quick disassembly and assembly according to the present invention;

[0019] Figure 2 is a schematic structural diagram of an embodiment of the support bridge in the synchronously calibrated multi-view small-range multi-dimensional motion capture device with quick disassembly and assembly according to the present invention;

[0020] Figure 3 is a schematic structural diagram of an embodiment of the bottom support in the synchronously calibrated multi-view small-range multi-dimensional motion capture device with quick disassembly and assembly according to the present invention;

[0021] Figure 4 is a schematic structural diagram of an embodiment of the first quick disassembly and assembly component in a relaxed state in the synchronously calibrated multi-view small-range multi-dimensional motion capture device with quick disassembly and assembly according to the present invention;

[0022] Figure 5 is a schematic structural diagram of an embodiment of the first quick disassembly and assembly component in a locked state in the synchronously calibrated multi-view small-range multi-dimensional motion capture device with quick disassembly and assembly according to the present invention;

[0023] Figure 6 This is a schematic structural diagram of the camera support plate in the embodiment of the synchronously calibrated multi-view small-range multi-dimensional motion capture device with quick disassembly and assembly of the present invention;

[0024] Figure 7 This is a schematic structural diagram of the calibrator support plate in the embodiment of the synchronously calibrated multi-view small-range multi-dimensional motion capture device with quick disassembly and assembly of the present invention;

[0025] Figure 8 This is a schematic structural diagram of the second quick disassembly and assembly component in the embodiment of the synchronously calibrated multi-view small-range multi-dimensional motion capture device with quick disassembly and assembly of the present invention;

[0026] Figure 9 This is a schematic diagram of the usage state of the synchronously calibrated multi-view small-range multi-dimensional motion capture device with quick disassembly and assembly of the present invention on a hospital bed.

[0027] Reference numerals

[0028] 1, Bottom support; 2, Through hole; 3, Support bridge; 4, Camera support plate; 5, Calibrator support plate; 6, First card slot; 7, Second card slot; 8, Arc-shaped groove; 9, First quick disassembly and assembly component; 91, Fixed cylinder; 92, Rotary rod; 93, Sphere; 94, Handle; 95, Second bolt; 96, Pin; 97, Spiral track; 98, Protrusion; 99, First bolt; 910, Baffle; 10, Guide groove; 11, Locking groove; 12, Round hole; 13, Camera; 14, Calibrator; 15, Second quick disassembly and assembly component; 151, Base; 152, Snap; 153, Connecting rod; 154, Triangular prism-shaped mounting hole; 155, Spring. Detailed implementation manners

[0029] The technical solutions of the present invention will be further described below with reference to the drawings and embodiments.

[0030] Embodiment

[0031] As Figures 1-9As shown in the figure, a synchronously calibrated multi-view small-range multi-dimensional motion capture device that can be quickly disassembled and assembled includes two bottom supports 1 arranged in parallel. A plurality of through holes 2 are evenly distributed on the bottom support 1. The through holes 2 can achieve weight reduction for the carrying, disassembly, and assembly of the overall device. Support bridges 3 are provided at the ends of the bottom support 1. Two support bridges 3 at the same end of the two bottom supports 1 are respectively connected to the two ends of the camera support plate 4, and the other two support bridges 3 are respectively connected to the two ends of the calibrator support plate 5. A first card slot 6 adapted to the structure of the support bridge 3 is provided on the bottom support 1. The first card slot 6 facilitates the quick positioning and installation of the support bridge 3 on the bottom support 1. A second card slot 7 adapted to the structure of the camera support plate 4 or the calibrator support plate 5 is provided on the support bridge 3. The second card slot 7 facilitates the quick positioning and installation of the camera support plate 4 or the calibrator support plate 5 on the support bridge 3. Arc-shaped grooves 8 are provided in both the first card slot 6 and the second card slot 7. The arc-shaped grooves 8 are used in cooperation with the balls 93 in the first quick disassembly and assembly component 9.

[0032] Between the bottom support 1 and the support bridge 3, between the support bridge 3 and the camera support plate 4, and between the support bridge 3 and the calibrator support plate 5, they are all connected by the first quick disassembly and assembly component 9. The first quick disassembly and assembly component 9 includes a fixed cylinder 91, a rotating rod 92 and a spherical ball 93. The fixed cylinder 91 is integrally connected with the support bridge 3, the camera support plate 4 or the calibrator support plate 5. A guiding groove 10 and a locking groove 11 are provided inside the fixed cylinder 91. The rotating rod 92 is located in the guiding groove 10. The top end of the rotating rod 92 extends out of the guiding groove 10 and is connected with a handle 94. The handle 94 and the rotating rod 92 are connected by a second bolt 95. A latch pin 96 is provided on the rotating rod 92. A spiral track 97 adapted to the structure of the latch pin 96 is provided on the inner wall of the guiding groove 10. When the rotating rod 92 is rotated by the handle 94, the latch pin 96 can move along the spiral track 97 to realize the rise or fall of the rotating rod 92. A convex block 98 extending into the locking groove 11 is provided at the bottom end of the rotating rod 92. The distance between the outer wall of the convex block 98 and the groove wall of the locking groove 11 gradually increases from top to bottom. The bottom surface of the convex block 98 is connected with a baffle 910 by a first bolt 99. The number of spherical balls 93 is at least two and they are located on the baffle 910. The spherical balls 93 are arranged corresponding to the round holes 12 on the side wall of the locking groove 11. The aperture of the round hole 12 is smaller than the diameter of the spherical ball 93, and the aperture of the round hole 12 is larger than the radius of the spherical ball 93. Arc-shaped grooves 8 corresponding to the round holes 12 are provided on both the bottom support 1 and the support bridge 3. After the rotating rod 92 is lowered by the handle 94, the convex block 98 can press the side part of the spherical ball 93 into the arc-shaped groove 8, realizing the locking between the bottom support 1 and the support bridge 3, between the support bridge 3 and the camera support plate 4, or between the support bridge 3 and the calibrator support plate 5, and ensuring the stability of the locked state to avoid shaking. After the rotating rod 92 is raised by the handle 94, the convex block 98 releases the spherical ball 93, and the spherical ball 93 leaves the arc-shaped groove 8 under the action of the arc-shaped groove 8 and gravity and returns to the baffle 910, realizing the disassembly between the bottom support 1 and the support bridge 3, between the support bridge 3 and the camera support plate 4, or between the support bridge 3 and the calibrator support plate 5.

[0033] At least two cameras 13 are provided on the camera support plate 4, and a calibrator 14 is provided on the calibrator support plate 5. The camera 13 and the camera support plate 4, and the calibrator 14 and the calibrator support plate 5 are connected through a second quick disassembly assembly 15. The second quick disassembly assembly 15 includes a base 151, a buckle 152, a connecting rod 153 and a triangular prism-shaped mounting hole 154. The top surface of the base 151 is provided with a mounting groove that is compatible with the structure of the camera 13 or the calibrator 14. The bottom surface of the base 151 is fixedly connected to the connecting rod 153, and the connecting rod 153 is penetrated with a buckle 152 and a spring 155. The spring 155 is located between the buckle 152 and the support plate at the bottom end of the connecting rod 153. The buckle 152 is compatible with the structure of the triangular prism-shaped mounting hole 154, and the buckle 152 is rounded to play a guiding role and is more convenient to rotate. The triangular prism-shaped mounting hole 154 is located on the camera support plate 4 and the calibrator support plate 5 and is arranged corresponding to the camera 13 and the calibrator 14. The triangular prism-shaped mounting hole 154 is designed with three installation adjustment options, which increases the adaptability of the device. After the connecting rod 153 and the buckle 152 pass through the triangular prism-shaped mounting hole 154, the buckle 152 is rotated 60 degrees. The buckle 152 will press the bottom surface of the base 151 under the action of the spring 155, so as to fix the camera 13 on the camera support plate 4 or the calibrator 14 on the calibrator support plate 5.

[0034] When in use, the bottom support 1 is fixed on the bed, and the first quick disassembly assembly component and the second quick disassembly assembly component 15 are used to realize the quick disassembly and assembly of the camera 13 and the calibrator 14. After installation, the two cameras 13 and the calibrator 14 are fixed in an absolute position and can independently become a coordinate. There is no need to calibrate separately each time, which improves the accuracy and convenience of calibration and is more conducive to the extraction of acupuncture technique data.

[0035] Therefore, the present invention adopts the above-mentioned structure of a quickly disassembled and synchronously calibrated multi-view small-range multi-dimensional motion capture device, which can use the first quick disassembly component and the second quick disassembly component to achieve rapid deployment and efficient use of the motion capture device. After the first quick disassembly component is self-locked, the bumps, balls and arc-shaped grooves are used to achieve complete fit without shaking, thereby increasing the stability of the mechanism; the two cameras and a calibrator are located at absolute positions and can independently become a coordinate, without the need for separate calibration each time, thereby improving the accuracy and convenience of calibration, and being more conducive to the extraction of acupuncture technique data.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A rapidly disassembled and assembled synchronous calibration multi-view small-range multi-dimensional motion capture device, characterized in that: It includes two bottom supports arranged in parallel, and the ends of the bottom supports are each provided with a support bridge. The two support bridges located at the same end of the two bottom supports are respectively connected to the two ends of the camera support plate, and the other two support bridges are respectively connected to the two ends of the calibrator support plate. The bottom supports and the support bridges, the support bridges and the camera support plate, and the support bridges and the calibrator support plate are all connected through a first quick-disassembly assembly; the first quick-disassembly assembly includes a fixing cylinder, a rotating rod and a ball. The fixing cylinder is integrally connected with the support bridge, the camera support plate or the calibrator support plate. A guide groove and a locking groove are provided in the fixing cylinder. The rotating rod is located at In the guide groove, a latch is arranged on the rotary rod, and a spiral track matching the latch structure is arranged on the inner wall of the guide groove, and a protrusion is arranged at the bottom end of the rotary rod and extends into the locking groove, and the distance between the outer wall of the protrusion and the groove wall of the locking groove gradually increases from top to bottom, and the bottom surface of the protrusion is connected to the baffle plate through a first bolt, and the top end of the rotary rod extends out of the guide groove and is connected to the handle, and the number of the balls is at least two and they are located on the baffle plate, and the balls are arranged corresponding to the circular holes on the side walls of the locking groove, and the aperture of the circular holes is smaller than the diameter of the balls, and the bottom support and the support bridge are both provided with arc-shaped grooves arranged corresponding to the circular holes; At least two cameras are arranged on the camera support plate, and a calibrator is arranged on the calibrator support plate. The camera and the camera support plate, and the calibrator and the calibrator support plate are connected via a second quick-disassembly assembly; the second quick-disassembly assembly comprises a base, a buckle, a connecting rod and a triangular prism-shaped mounting hole. The top surface of the base is provided with a mounting groove matched with the camera or the calibrator structure, the bottom surface of the base is fixedly connected with the connecting rod, a buckle and a spring are passed through the connecting rod, the spring is located between the buckle and the support plate at the bottom end of the connecting rod, the buckle is matched with the triangular prism-shaped mounting hole structure, and the triangular prism-shaped mounting hole is located on the camera support plate and the calibrator support plate and is arranged corresponding to the camera and the calibrator.

2. The rapidly disassembled synchronous calibration multi-view small-range multi-dimensional motion capture device according to claim 1, characterized in that: The handle is connected to the rotating rod via a second bolt.

3. The rapidly disassembled synchronous calibration multi-view small-range multi-dimensional motion capture device according to claim 2, characterized in that: The bottom support is provided with a first card slot adapted to the support bridge structure, the support bridge is provided with a second card slot adapted to the camera support plate or the calibrator support plate structure, and the first card slot and the second card slot are both provided with the arc-shaped groove.

4. The rapidly disassembled synchronous calibration multi-view small-range multi-dimensional motion capture device according to claim 3, characterized in that: The bottom support is provided with a plurality of evenly distributed through holes.

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