Smart Camera for Virtual Studio

Abstract

The utility model relates to the technical field of cameras, and proposes an intelligent camera for a virtual studio, including a tripod, a mobile pan-tilt head and a camera body, wherein the mobile pan-tilt head includes a fixed frame, a fixed plate, a positioning plate and a driving mechanism, wherein the fixed frame is fixedly arranged on the tripod; the fixed plate is slidably arranged on the fixed frame, and the camera body is fixedly arranged on the fixed plate; the positioning plate is slidably arranged on the fixed frame, and selectively abuts against the fixed plate; the driving mechanism is used to drive the fixed plate to slide, and selectively drive the positioning plate and the fixed plate to slide synchronously. The utility model sets a positioning plate and a driving mechanism, so that the positioning plate can limit the camera body at the initial position, so that the camera body can be moved back to the initial position after being moved on the mobile pan-tilt head for use, thereby accelerating the positioning speed of the camera body and improving the recording efficiency of the program.

Description

Technical Field

[0001] The utility model relates to the technical field of cameras, in particular to an intelligent camera for a virtual studio. Background Art

[0002] Virtual studio is a new type of television program production technology. It digitally combines the virtual three-dimensional scene produced by computer with the image of human movement shot by television cameras on site in real time, so that the characters and virtual background can change synchronously, thus realizing the fusion of the two to obtain a perfect composite picture. It has been widely used in weather forecasting, education and teaching and other fields.

[0003] The invention patent with the patent publication number CN114332244A discloses a camera positioning method and system for a virtual studio, including: using dots as marker points, projecting an array of several marker points onto the screen, establishing a world coordinate system with the center point of the screen as the origin, calculating the spatial position of the projected marker points in the world coordinate system, and using a calibrated camera to take an image of the marker points; obtaining the edge points of the dots in the image, using a circular fitting method after homography transformation to calculate the pixel coordinates of the circle surrounded by the edge points on the image, pairing the pixel coordinates of the marker points with the world coordinates of the marker points, and calculating the position and posture of the camera. Without the use of additional equipment, the accurate position and orientation of the camera are obtained, so that the screen obtains the projected image of the virtual scene, and the accuracy of the camera position and projection model is improved.

[0004] In the above technical solution, by setting the positioning method of the camera, the initial position and orientation of the camera can be determined so that the virtual three-dimensional scene and the captured image are perfectly integrated. However, during the program recording process, the camera needs to be displaced according to the shooting requirements and deviate from its initial position, resulting in the need to reposition the camera before the next program recording, which reduces the program recording efficiency. Utility Model Content

[0005] In view of this, the utility model proposes an intelligent camera for a virtual studio, which can speed up the positioning speed of the camera body and improve the program recording efficiency.

[0006] The technical solution of the utility model is implemented as follows: The utility model provides an intelligent camera for a virtual studio, including a tripod, a mobile pan head and a camera body, wherein the mobile pan head includes a fixing frame, a fixing plate, a positioning plate and a driving mechanism, wherein:

[0007] The fixing frame is fixedly arranged on the tripod;

[0008] The fixing plate is slidably arranged on the fixing frame, and the camera body is fixedly arranged on the fixing plate;

[0009] The positioning plate is slidably disposed on the fixing frame and selectively abuts against the fixing plate;

[0010] The driving mechanism is used to drive the fixing plate to slide, and selectively drive the positioning plate and the fixing plate to slide synchronously.

[0011] On the basis of the above technical solution, preferably, the driving mechanism includes a first screw rod, a first slider, a second screw rod, a second slider, a first gear, a second gear and a third gear, wherein:

[0012] The first screw rod and the second screw rod are both rotatably disposed in the fixed frame, and the two are arranged in parallel and at intervals;

[0013] The first sliding block is slidably disposed in the fixing frame and fixedly connected to the fixing plate, and is connected to the first screw rod through threaded matching;

[0014] The second sliding block is slidably disposed in the fixing frame and fixedly connected to the positioning plate, and is connected to the second screw rod through threaded matching;

[0015] The first gear is fixedly disposed on the first screw rod and is coaxially disposed therewith;

[0016] The second gear is rotatably disposed on the fixing frame and is selectively fixed and coaxially connected with the second screw rod;

[0017] The third gear is rotatably disposed on the fixing frame and is meshed with the first gear and the second gear respectively.

[0018] More preferably, the driving mechanism further comprises a fixing tube and a fixing bolt, wherein:

[0019] The fixed tube is fixedly arranged on the second gear, and the second screw rod is rotatably arranged in the fixed tube and coaxially arranged therewith;

[0020] The fixing bolt passes through the fixing tube and is connected thereto by threaded cooperation, and the fixing bolt selectively abuts against the second screw rod.

[0021] More preferably, a gap is provided between the inner wall of the fixing tube and the outer wall of the second screw rod.

[0022] More preferably, the driving mechanism further comprises the hand wheel, which is rotatably disposed on the fixing frame and is coaxially and fixedly connected to the second gear.

[0023] On the basis of the above technical solution, preferably, it also includes a reset mechanism, the reset mechanism includes three fixing seats and a laser emitter, wherein,

[0024] The fixing seat is fixedly arranged on the fixing frame or the camera body, and the three fixing seats are not arranged in a colinear manner;

[0025] A laser emitter is fixedly arranged on each of the fixing seats and is used for resetting the camera body.

[0026] More preferably, the fixing seat comprises a fixing cylinder, a fixing ball head, a rotating cylinder and a limiting ring, wherein:

[0027] One end of the fixing tube is fixedly arranged on the fixing frame or the camera body;

[0028] The fixed ball head is rotatably arranged in the fixed cylinder;

[0029] The rotating cylinder is arranged on the fixed cylinder and connected thereto by threaded engagement;

[0030] The limiting ring is fixedly arranged on the rotating drum and selectively abuts against the fixed ball head. The laser emitter is fixedly arranged on the fixed ball head and passes through the limiting ring.

[0031] On the basis of the above technical solution, preferably, it further comprises a guide mechanism, wherein the guide mechanism comprises a slide rail and a slider, wherein:

[0032] The slide rail is fixedly arranged on the fixing frame;

[0033] The sliding block is fixedly arranged on the fixing plate and is slidably connected with the sliding rail.

[0034] The virtual studio intelligent camera of the utility model has the following beneficial effects compared with the prior art:

[0035] (1) By providing a positioning plate and a driving mechanism, the positioning plate can limit the camera body at the initial position, so that the camera body can be moved back to the initial position after being moved on the mobile pan / tilt head, thereby speeding up the positioning speed of the camera body and improving the recording efficiency of the program;

[0036] (2) By setting a reset mechanism, the initial position of the camera body can be marked by using the cooperation of the laser transmitter and the mark made on the ground, so as to restore the position of the tripod after the tripod is moved;

[0037] (3) By providing a guide mechanism and utilizing the sliding cooperation between the slider and the slide rail, the moving stability of the fixed plate can be improved, thereby preventing the camera body from shaking during the sliding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 A three-dimensional image of the intelligent camera for the virtual studio of the utility model;

[0040] Figure 2 A three-dimensional image of the mobile pan-tilt position in the intelligent camera for the virtual studio of the utility model;

[0041] Figure 3 It is a top view of the internal structure of the mobile pan-tilt head in the intelligent camera for the virtual studio of the utility model;

[0042] Figure 4 It is an exploded view of the fixed pipe in the intelligent camera for virtual studio of the utility model;

[0043] Figure 5 It is a stereoscopic diagram of the reset mechanism in the intelligent camera for virtual studio of the utility model;

[0044] Figure 6 The utility model is an exploded view of the fixing seat of the intelligent camera for virtual studio.

[0045] Among them: 1. tripod; 2. mobile pan / tilt; 21. fixed frame; 22. fixed plate; 23. positioning plate; 24. driving mechanism; 241. first screw rod; 242. first slider; 243. second screw rod; 244. second slider; 245. first gear; 246. second gear; 247. third gear; 248. fixed tube; 249. fixing bolt; 240. hand wheel; 3. camera body; 4. reset mechanism; 41. fixed seat; 411. fixed cylinder; 412. fixed ball head; 413. rotating cylinder; 414. limiting ring; 42. laser transmitter; 5. guide mechanism; 51. slide rail; 52. slider. DETAILED DESCRIPTION

[0046] The following will be combined with the specific implementation of the utility model to clearly and completely describe the technical solution in the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0047] like Figure 1-6 As shown, the intelligent camera for virtual studio of the utility model comprises a tripod 1, a mobile pan / tilt 2, a camera body 3, a guide mechanism 5 and a reset mechanism 4.

[0048] The tripod 1 is used to support the mobile platform 2 and can make adaptive adjustments to the angle and height of the mobile platform 2. The tripod 1 usually has a marking function so that it can be restored to the state of last use when used next time.

[0049] The mobile pan-tilt platform 2 is used to carry the camera body 3 and move it. The mobile pan-tilt platform 2 includes a fixing frame 21, a fixing plate 22, a positioning plate 23 and a driving mechanism 24. The fixing frame 21 is fixedly set on the tripod 1; the fixing plate 22 is slidably set on the fixing frame 21, and the camera body 3 is fixedly set on the fixing plate 22; the positioning plate 23 is slidably set on the fixing frame 21 and selectively abuts against the fixing plate 22; the driving mechanism 24 is used to drive the fixing plate 22 to slide, and selectively drive the positioning plate 23 and the fixing plate 22 to slide synchronously; when the initial program is recorded to adjust the initial position of the camera body 3, the driving mechanism 24 drives the positioning plate 23 to slide synchronously with the fixing plate 22. The plate 23 and the fixed plate 22 slide synchronously, and the positioning plate 23 always presses against the fixed plate 22 until the camera body 3 is adjusted to the initial position, and the driving mechanism 24 only drives the fixed plate 22 to slide, while the position of the positioning plate 23 is always kept stationary. During the program recording process, the driving mechanism 24 can be used to drive the fixed plate 22 to slide as needed. When the program recording is completed, the driving mechanism 24 is used again to drive the fixed plate 22 to move to the position pressing against the positioning plate 23, so that the camera body 3 can be reset, so that the position of the camera body 3 does not need to be repositioned during the next program recording, thereby improving the efficiency of program recording.

[0050] like Figure 3As shown, the positioning plate 23 holds the right side of the fixing plate 22, so that the fixing plate 22 cannot slide to the right during the movement. Therefore, the initial position of the camera body 3 should be selected at the rightmost position of the program recording interface, or to the right of this rightmost position, so that the position where the camera body 3 needs to move is located on the left side of the positioning plate 23. In addition, a mobile platform 2 (not shown in the figure) can be set below the mobile platform 2, so that the lower fixing frame 21 is connected to the tripod 1, the lower fixing plate 22 is connected to the upper fixing frame 21, the upper fixing plate 22 is connected to the camera body 3, and the lower positioning plate 23 holds the left side of the fixing plate 22. At this time, the upper mobile platform 2 can be moved to the right and its left initial position can be positioned. In conjunction with the positioning of the upper mobile platform 2 to the rightmost position of the camera body 3, the camera body 3 can be slid left and right and its initial position can be positioned so as to restore its initial position in time.

[0051] The abutment of the positioning plate 23 against the fixed plate 22 is not easy to be observed by the operator. In order to solve this problem, a push switch can be provided on the positioning plate 23. When the positioning plate 23 abuts against the fixed plate 22, the fixed plate 22 triggers the push switch. In combination with the electrical connection between the buzzer or the light bulb and the push switch, the operator can timely grasp the state of the abutment between the positioning plate 23 and the fixed plate 22.

[0052] like Figure 3As shown, the driving mechanism 24 includes a first screw rod 241, a first slider 242, a second screw rod 243, a second slider 244, a first gear 245, a second gear 246 and a third gear 247, wherein the first screw rod 241 and the second screw rod 243 are both rotatably arranged in the fixed frame 21, and the two are arranged in parallel and at intervals; the first slider 242 is slidably arranged in the fixed frame 21 and is fixedly connected to the fixed plate 22, and it is connected to the first screw rod 241 through threaded cooperation; the second slider 244 is slidably arranged in the fixed frame 21 and is fixedly connected to the positioning plate 23, and it is connected to the second screw rod 243 through threaded cooperation; the first gear 245 is fixedly arranged on the first screw rod 241 and is coaxially arranged therewith; the second gear 246 is rotatably arranged on the fixed frame 21, and is selectively fixed and coaxially connected to the second screw rod 243; the third gear 247 is rotatably arranged on the fixed frame 21, And they are respectively meshed with the first gear 245 and the second gear 246; since the second gear 246 is selectively fixedly connected to the second screw rod 243, when the two are fixedly connected, rotating the second gear 246 can drive the second screw rod 243 to rotate, so that the second slider 244 is driven to slide on the fixed frame 21 by utilizing the threaded cooperation between the second screw rod 243 and the second slider 244 to slide the positioning plate 23. At the same time, since the third gear 247 is respectively meshed with the second gear 246 and the first gear 245, the rotation of the second gear 246 can also drive the first screw rod 241 to rotate, and thus it will also drive the first slider 242 and the fixed plate 22 to slide, thereby realizing the synchronous sliding of the fixed plate 22 and the positioning plate 23; and when the second gear 246 is not fixedly connected to the second screw rod 243, the rotation of the second gear 246 only drives the fixed plate 22 to slide.

[0053] The driving mechanism 24 further includes a fixing tube 248, a fixing bolt 249 and a hand wheel 240, wherein the fixing tube 248 is fixedly disposed on the second gear 246, and the second screw rod 243 is rotatably disposed in the fixing tube 248 and is coaxially disposed therewith; the fixing bolt 249 penetrates the fixing tube 248 and is connected therewith by threaded engagement, and the fixing bolt 249 selectively abuts against the second screw rod 243; Figure 4 As shown, when the fixing bolt 249 is tightened, the fixing bolt 249 presses against the second screw rod 243, so that the second screw rod 243 is fixedly connected to the second gear 246, and when the fixing bolt 249 is loosened, the second screw rod 243 is rotationally connected to the fixing tube 248, so that the second screw rod 243 is not fixedly connected to the second gear 246.

[0054] In order to prevent the rotation of the fixing tube 248 from affecting the second screw rod 243 , it is preferred that a gap is provided between the inner wall of the fixing tube 248 and the outer wall of the second screw rod 243 .

[0055] like Figure 3As shown, the hand wheel 240 is rotatably disposed on the fixed frame 21 and is coaxially and fixedly connected to the second gear 246 . The hand wheel 240 is used to facilitate the rotation of the second gear 246 to operate the driving mechanism 24 .

[0056] The reset mechanism 4 is used to reset the camera body 3 when the tripod 1 is moved. The reset mechanism 4 includes three fixing seats 41 and laser emitters 42, wherein the fixing seats 41 are fixedly arranged on the fixing frame 21 or the camera body 3, and the three fixing seats 41 are not arranged in a colinear manner; a laser emitter 42 is fixedly arranged on each fixing seat 41, and the laser emitter 42 can emit visible light. After the initial position of the camera body 3 is determined, the laser emitter 42 is turned on to allow the visible light emitted by the laser emitter 42 to irradiate the ground and make a mark. When the tripod 1 is moved, the tripod 1 can be reset by utilizing the coincidence of the visible light emitted by the laser emitter 42 and the mark point on the ground.

[0057] like Figure 6 As shown, the fixing seat 41 includes a fixing cylinder 411, a fixing ball head 412, a rotating cylinder 413 and a limiting ring 414, wherein one end of the fixing cylinder 411 is fixedly arranged on the fixing frame 21 or the camera body 3; the fixing ball head 412 is rotatably arranged in the fixing cylinder 411; the rotating cylinder 413 is arranged on the fixing cylinder 411 and is connected thereto by threaded cooperation; the limiting ring 414 is fixedly arranged on the rotating cylinder 413 and selectively abuts against the fixing ball head 412, and the laser emitter 42 is fixedly arranged on the fixing ball head 412 and passes through the limiting ring 414. When the rotating cylinder 413 is loosened, the fixing ball head 412 can be rotated to adjust the angle of the laser emitter 42, and when the rotating cylinder 413 is tightened, the fixing ball head 412 can be abutted and fixed to fix the irradiation angle of the laser emitter 42.

[0058] After the program recording is completed, the tripod 1, the mobile pan / tilt 2 and the camera body 3 need to be stored, which will cause the tripod 1 to fold and deform. During the next program recording, the tripod 1 may not be restored to the state of the previous program recording, resulting in the camera body 3 needing to be repositioned. This problem can be solved by setting a laser emitter 42 with an adjustable angle. For example, after the camera body 3 is initially positioned, the marking points of the three laser emitters 42 on the ground are not overlapped, and the three laser emitters 42 are not in a vertical state, and the angles between the three laser emitters 42 and the horizontal plane are different, and the angles of the laser emitters 42 are fixed. During the next program recording, the tripod 1 can be restored to the state of the initial positioning of the camera body 3 by utilizing the coincidence of the light emitted by the three laser emitters 42 and the three marking points.

[0059] The guide mechanism 5 is used to improve the movement stability of the fixed plate 22 and the camera body 3. The guide mechanism 5 includes a slide rail 51 and a slider 52, wherein the slide rail 51 is fixedly set on the fixed frame 21; the slider 52 is fixedly set on the fixed plate 22 and is slidably connected to the slide rail 51. The sliding cooperation between the two makes the fixed plate 22 slide more smoothly on the fixed frame 21.

[0060] The method of using the virtual studio intelligent camera of the utility model is as follows:

[0061] During the first program recording, firstly, the driving mechanism 24 is allowed to drive the fixing plate 22 and the positioning plate 23 to move synchronously, and the initial position of the camera body 3 is positioned in coordination with the adjustment of the tripod 1. When the camera body 3 is in the initial position, the positioning plate 23 and the fixing plate 22 are abutted against each other, and then the driving mechanism 24 can only drive the fixing plate 22 to move, and then the emission angles of the three laser emitters 42 are adjusted to make the three emission angles different, and finally the irradiation points of the three laser emitters 42 on the ground are marked. When the camera body 3 moves on the mobile pan-tilt head 2 according to shooting requirements, or when the tripod 1, the mobile pan-tilt head 2 and the camera body 3 are shifted after the program recording is completed, the camera body 3 can be quickly restored to the initial positioning position by using the re-abutment of the fixing plate 22 and the positioning plate 23 and the coincidence of the three laser emitters 42 with the marked points on the ground.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent camera for a virtual studio, characterized in that: The invention comprises a tripod (1), a mobile pan-tilt platform (2) and a camera body (3), wherein the mobile pan-tilt platform (2) comprises a fixing frame (21), a fixing plate (22), a positioning plate (23) and a driving mechanism (24), wherein: The fixing frame (21) is fixedly arranged on the tripod (1); The fixing plate (22) is slidably arranged on the fixing frame (21), and the camera body (3) is fixedly arranged on the fixing plate (22); The positioning plate (23) is slidably disposed on the fixing frame (21) and selectively abuts against the fixing plate (22); The driving mechanism (24) is used to drive the fixing plate (22) to slide, and selectively drive the positioning plate (23) and the fixing plate (22) to slide synchronously.

2. The intelligent camera for virtual studio as claimed in claim 1, characterized in that: The driving mechanism (24) comprises a first screw rod (241), a first slider (242), a second screw rod (243), a second slider (244), a first gear (245), a second gear (246) and a third gear (247), wherein: The first screw rod (241) and the second screw rod (243) are both rotatably disposed in the fixed frame (21), and the two are arranged in parallel and at intervals; The first sliding block (242) is slidably disposed in the fixing frame (21) and fixedly connected to the fixing plate (22), and is connected to the first screw rod (241) through threaded matching; The second sliding block (244) is slidably disposed in the fixing frame (21) and is fixedly connected to the positioning plate (23), and is connected to the second screw rod (243) through threaded matching; The first gear (245) is fixedly mounted on the first screw rod (241) and is coaxially arranged therewith; The second gear (246) is rotatably disposed on the fixing frame (21), and is selectively fixed to and coaxially connected with the second screw rod (243); The third gear (247) is rotatably disposed on the fixing frame (21) and is respectively meshed with the first gear (245) and the second gear (246).

3. The intelligent camera for virtual studio as claimed in claim 2, characterized in that: The driving mechanism (24) further comprises a fixing tube (248) and a fixing bolt (249), wherein: The fixed tube (248) is fixedly arranged on the second gear (246), and the second screw rod (243) is rotatably arranged in the fixed tube (248) and is coaxially arranged therewith; The fixing bolt (249) passes through the fixing tube (248) and is connected thereto by threaded engagement, and the fixing bolt (249) selectively abuts against the second screw rod (243).

4. The intelligent camera for virtual studio as claimed in claim 3, characterized in that: A gap is provided between the inner wall of the fixing tube (248) and the outer wall of the second screw rod (243).

5. The intelligent camera for virtual studio as claimed in claim 4, characterized in that: The driving mechanism (24) further comprises a hand wheel (240), wherein the hand wheel (240) is rotatably disposed on the fixing frame (21) and is coaxially and fixedly connected to the second gear (246).

6. The intelligent camera for virtual studio as claimed in claim 1, characterized in that: It also includes a reset mechanism (4), which includes three fixing seats (41) and a laser emitter (42), wherein: The fixing seat (41) is fixedly arranged on the fixing frame (21) or the camera body (3), and the three fixing seats (41) are not arranged in a colinear manner; A laser emitter (42) is fixedly arranged on each of the fixing seats (41) and is used for resetting the camera body (3).

7. The intelligent camera for virtual studio as claimed in claim 6, characterized in that: The fixing seat (41) comprises a fixing cylinder (411), a fixing ball head (412), a rotating cylinder (413) and a limiting ring (414), wherein: One end of the fixing tube (411) is fixedly arranged on the fixing frame (21) or the camera body (3); The fixed ball head (412) is rotatably disposed in the fixed cylinder (411); The rotating cylinder (413) is arranged on the fixed cylinder (411) and is connected thereto by means of threads; The limiting ring (414) is fixedly arranged on the rotating cylinder (413) and selectively abuts against the fixed ball head (412); the laser emitter (42) is fixedly arranged on the fixed ball head (412) and passes through the limiting ring (414).

8. The intelligent camera for virtual studio as claimed in claim 1, characterized in that: It also includes a guide mechanism (5), the guide mechanism (5) including a slide rail (51) and a slide block (52), wherein: The slide rail (51) is fixedly arranged on the fixing frame (21); The sliding block (52) is fixedly arranged on the fixing plate (22) and is slidably connected to the sliding rail (51).

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