Multi-camera video conference system and multi-camera device and implementation method thereof

Abstract

The invention discloses a multi-camera video conference system and a multi-camera device and an implementation method thereof, the multi-camera device comprises a main camera assembly and a desktop camera assembly, a video meeting place panorama picture is collected in real time through a main camera, meeting place close-up pictures of participants are collected in real time through a desktop camera, and the video meeting place panorama picture and the meeting place close-up pictures are acquired in real time. And the conference host receives the conference place panoramic picture and each conference place close-up picture in real time, integrates the conference place panoramic picture and each conference place close-up picture in response to a conference picture mode selection instruction, generates a conference picture corresponding to a conference picture mode, and transmits the conference picture to the video conference APP. According to the invention, the conference host on the main camera assembly is used for receiving the conference place close-up pictures of the desktop cameras in real time and integrating and generating the conference picture, a professional video switching matrix or a splicer is not needed for picture synthesis, the implementation mode and operation are simple, the cost is low, and the practicability is high.

Description

Technical Field

[0001] The present invention relates to the technical field of video conferencing, and particularly relates to a multi-camera video conferencing system, a multi-camera device thereof, and an implementation method. Background Art

[0002] Nowadays, video conferencing has become an important communication and collaboration method in modern office work.

[0003] In the existing video conferencing room camera system, usually one camera is deployed and connected to the conference host to provide a video picture for the video conference. However, it is often difficult for one camera to comprehensively cover all the participants. Especially when the participants are seated separately, it is very difficult to clearly include the front of each participant in the video picture, which affects the effect of the video conference.

[0004] For this reason, multiple independent cameras can be used to collect different pictures, and then the pictures are synthesized through a professional video matrix or splicer, and then output to a video capture card and then connected to a third-party conference system. However, this implementation method requires professional equipment and professional operators to complete, with high costs and troublesome operations, and is not practically feasible for most enterprises. Summary of the Invention

[0005] Aiming at the above defects, the technical problem to be solved by the present invention is to provide a wireless transmission multi-camera system for a video conferencing room to solve the problems of high costs and troublesome operations of the existing multi-camera video conferencing system, which requires professional equipment and professional operators to complete.

[0006] For this reason, the present invention provides an implementation method for a multi-camera video conferencing system, including the following steps:

[0007] The panoramic picture of the conference venue of the video conference is collected in real time through the main camera, and the close-up pictures of the participants in different directions are collected in real time through one or more desktop cameras;

[0008] Each close-up picture of the conference venue is encoded to generate each encoded picture;

[0009] The conference host receives the panoramic picture of the conference venue and each encoded picture in real time, and decodes each encoded picture to obtain each close-up picture of the conference venue;

[0010] In response to the conference picture mode selection instruction, the panoramic picture of the conference venue and each close-up picture of the conference venue are integrated to generate a conference picture corresponding to the conference picture mode and transmitted to the video conferencing APP.

[0011] Based on the above implementation method of the multi-camera video conferencing system, in this application, the main camera is used to collect the panoramic view of the conference venue in real time, and one or more desktop cameras are used to collect the close-up views of the participants in the conference venue from different directions in real time. The conference host receives the panoramic view of the conference venue and the close-up views in real time and integrates them to generate a conference picture corresponding to the conference picture mode, and transmits it to the video conferencing APP. There is no need for a professional video switching matrix or splicer for picture synthesis, and the implementation method and operation are simple, the cost is low, and the practicability is strong.

[0012] In the above method, preferably, the conference host receives the respective encoded pictures wirelessly. This implementation method does not require wiring and is convenient to move.

[0013] In the above method, preferably, the one or more desktop cameras are arranged on a desktop base, and the desktop base encodes the respective close-up views of the conference venue to form the respective encoded pictures and sends them to the conference host in real time.

[0014] In the above method, preferably, 1 to 4 of the desktop cameras are arranged on the desktop base, where:

[0015] When 2 desktop cameras are arranged on the desktop base, the 2 desktop cameras are arranged back to back to achieve a 180° shooting angle;

[0016] When 3 desktop cameras are arranged on the desktop base, the 3 desktop cameras are arranged at 90 degrees to each other to achieve a 270° shooting angle;

[0017] When 4 desktop cameras are arranged on the desktop base, the 4 cameras are arranged back to back in pairs to achieve a 360° shooting angle.

[0018] The present invention also provides a multi-camera device for a multi-camera video conferencing system, including:

[0019] A desktop camera assembly, including a desktop base, on which one or more desktop cameras are arranged. The desktop cameras are used to collect the close-up views of the participants in the conference venue from different directions in real time and encode the respective close-up views of the conference venue to generate the respective encoded pictures;

[0020] A main camera assembly, including a main camera and a conference host. The main camera is used to collect the panoramic view of the conference venue; the conference host receives the panoramic view of the conference venue and the respective encoded pictures in real time, decodes the respective encoded pictures to obtain the respective close-up views of the conference venue, and in response to a conference picture mode selection instruction, integrates the panoramic view of the conference venue and the respective close-up views of the conference venue to generate a conference picture corresponding to the conference picture mode for transmission to the video conferencing APP.

[0021] In the above multi-camera device, preferably, an encoding module and a transmitting module are provided in the desktop base. The encoding module is used to encode the close-up images of each venue to generate the respective encoded images, and the transmitting module is used to transmit the respective encoded images to the conference host. A receiving module, a decoding module, a mode selection module, and an image integration module are provided in the conference host. The receiving module receives the respective encoded images in real time, the decoding module decodes the respective encoded images to obtain the close-up images of each venue, the mode selection module is used to select a conference image mode, and the image integration module is used to integrate the panoramic venue image and the close-up images of each venue according to the conference image mode to generate the conference image.

[0022] In the above multi-camera device, preferably, both the transmitting module and the receiving module adopt wireless modules.

[0023] In the above multi-camera device, preferably, the conference image modes at least include: picture-in-picture, host switching, whiteboard shooting, speaker close-up, and head portrait division.

[0024] In the above multi-camera device, preferably, 1 to 4 desktop cameras are provided on the desktop base, where:

[0025] When 2 desktop cameras are provided on the desktop base, the 2 desktop cameras are arranged back-to-back to achieve a 180° shooting angle;

[0026] When 3 desktop cameras are provided on the desktop base, the 3 desktop cameras are arranged at 90 degrees to each other to achieve a 270° shooting angle;

[0027] When 4 desktop cameras are provided on the desktop base, the 4 cameras are arranged in pairs back-to-back to achieve a 360° shooting angle.

[0028] The present invention also provides a multi-camera video conferencing system, including a video conferencing APP, and further including the above multi-camera device. The conference host transmits the conference image to the video conferencing APP.

[0029] As can be seen from the above technical solutions, a multi-camera video conferencing system, its multi-camera device, and implementation method provided by the present invention solve the problems in the prior art that a professional video matrix or splicer is used to implement the splicing of multi-camera video images in a video conference, which requires professional operators, has high equipment costs, and is troublesome to operate. Compared with the prior art, the present invention has the following beneficial effects:

[0030] The panoramic view of the meeting venue for the video conference is collected in real time through the main camera, and the close-up views of the participants in the meeting venue in different directions are collected in real time through the desktop camera; the conference host receives the panoramic view of the meeting venue and the close-up views of the meeting venue in real time and integrates them to generate a conference picture corresponding to the conference picture mode, and transmits it to the video conferencing APP. This solution does not require a professional video switching matrix or splicer for picture synthesis, has a simple implementation method and operation, low cost, and strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce and explain the drawings required for the description of the embodiments of the present invention or the prior art. Obviously, the drawings in the following description are only partial embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0032] Figure 1 Schematic diagram of the multi-camera device of a multi-camera video conferencing system provided by the present invention;

[0033] Figure 2 Schematic diagram of the main camera assembly in the present invention;

[0034] Figure 3 Side view of the desktop camera assembly in the present invention;

[0035] Figure 4 Top view of the desktop camera assembly in the present invention;

[0036] Figure 5 Flowchart of the implementation method of a multi-camera video conferencing system provided by the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] In the existing multi-camera video conferencing system, a professional video matrix or splicer is required to realize the splicing of multi-camera video pictures, which requires professional operators, has high equipment costs, and is troublesome to operate.

[0038] In the solution of the present application, the multi-camera device includes a main camera assembly and a desktop camera assembly. The main camera assembly includes a main camera and a conference host. The desktop camera assembly includes a desktop base and one or more desktop cameras. The panoramic view of the meeting venue for the video conference is collected in real time through the main camera, and the close-up views of the participants in the meeting venue in different directions are collected in real time through one or more desktop cameras. The conference host receives the panoramic view of the meeting venue and each close-up view of the meeting venue in real time, and integrates them to generate a conference picture corresponding to the conference picture mode. It does not require a professional video switching matrix or splicer for picture synthesis, has a simple implementation method and operation, low cost, and improves the quality and efficiency of office or meetings.

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the embodiments described below are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0040] In order to more clearly explain and illustrate the technical solutions and implementation manners of the present invention, several preferred specific embodiments for implementing the technical solutions of the present invention are introduced below.

[0041] It should be noted that the orientation words such as "inside, outside", "front, back", and "left, right" in this article are expressed based on the product's usage state as the reference object. Obviously, the use of the corresponding orientation words does not limit the protection scope of the present solution.

[0042] As Figure 1 shown, a multi-camera device of a multi-camera video conferencing system provided by the present invention includes a main camera assembly 10 and a desktop camera assembly 20. The main camera assembly 10 and the desktop camera assembly 20 can be arranged at any position in the meeting room 40 according to the user's needs. In one embodiment, the main camera assembly 10 is arranged facing the conference table 30, and the desktop camera assembly 20 is arranged on the conference table 30.

[0043] As Figure 2 shown, the main camera assembly 10 includes a main camera 11 and a conference host 12. The main camera 11 adopts a wide-angle design, and the video angle ≥ 130°. As the panoramic camera of the entire meeting room, it collects the panoramic picture of the meeting venue in real time. The main camera 11 can be adjusted at multiple angles up and down and left and right, which is convenient for users to apply in different scenarios. The main camera 11 is connected to the conference host 12, and the conference host 12 accesses the video conferencing APP to provide the conference picture for the video conference.

[0044] The video conferencing APP can be a third-party video conferencing APP, for example, Tencent Meeting, Teams, etc.

[0045] As Figure 3 、 Figure 4As shown in the figure, the desktop camera assembly 20 includes a desktop base 21 and one or more desktop cameras 22 disposed on the desktop base 21. The desktop cameras 22 are used to collect close-up images of the conference participants in different directions in real time. The desktop base 21 is connected to the conference host 12 and is used to transmit the close-up images of each venue to the conference host 12. The desktop base 21 can be connected to the conference host 12 in a wired or wireless manner. In this embodiment, the desktop base 21 is connected to the conference host 12 in a wireless manner, which facilitates the arrangement of the main camera assembly 10 and the desktop camera assembly 20, or the desktop camera assembly 20 can be moved at any time to obtain the best close-up images of the venue.

[0046] A sending module 23 and an encoding module 24 are provided inside the desktop base 21. Multiple desktop cameras 22 are respectively arranged in different directions and are used to collect close-up images of the conference participants in different directions sitting at the conference table.

[0047] The number of desktop cameras 22 can be set from 1 to 4, and users can choose independently according to their needs. Among them, when 2 desktop cameras 22 are provided on the desktop base 21, the 2 desktop cameras 22 are arranged back to back to achieve a 180° shooting angle; when 3 desktop cameras 22 are provided on the desktop base 21, the 3 desktop cameras 22 are arranged at 90 degrees to each other to achieve a 270° shooting angle; when 4 desktop cameras 22 are provided on the desktop base 21, the 4 cameras 22 are arranged back to back in pairs to achieve a 360° shooting angle. Figure 3 、 Figure 4 The situation of configuring 4 cameras 22 is shown.

[0048] The encoding module 24 is used to encode the close-up images of the venue collected by each desktop camera 22 to generate respective encoded images, so as to distinguish the different close-up images of the venue collected by different desktop cameras 22. Taking the configuration of 4 desktop cameras as an example: the encoding module 24 encodes the first close-up image of the venue collected by the first desktop camera as 01, the second close-up image of the venue collected by the second desktop camera as 02, the third close-up image of the venue collected by the third desktop camera as 03, and the fourth close-up image of the venue collected by the fourth desktop camera as 04.

[0049] Please refer to Figure 2 again. A receiving module 13, a decoding module 14, a mode selection module 15, and a picture integration module 16 are provided inside the conference host 12. The mode selection module 15 is used to select the conference picture mode, which can be selected by the user according to needs. The conference picture modes include: picture-in-picture, host switching, whiteboard shooting, speaker close-up, head portrait equal division and other different picture modes.

[0050] Among them, picture-in-picture means that in a video conference, a close-up picture of a venue is nested and displayed in the panoramic picture of the venue in a smaller size. This allows participants to simultaneously pay attention to other important video information while watching the main conference video content, such as the close-up of a speaker or the picture of a specific scene, facilitating participants to obtain information more comprehensively and improving the efficiency and experience of the conference.

[0051] Host switching means that in a video conference, specific participants are given the authority of the host, enabling them to control some operations and management of the conference. For example, the host can control the mute / unmute status of participants, turn on / off the video, manage the recording and sharing of the conference, and control the progress of the conference agenda. When the host is switched, the original host authority will transfer to another designated participant, and the new host can exercise the corresponding management responsibilities to better organize and guide the progress of the conference.

[0052] Whiteboard shooting refers to the function of shooting or recording the content of the electronic whiteboard used in a video conference. Through the whiteboard shooting function, participants can record in real time various operations and content written, drawn, and marked on the electronic whiteboard. This can facilitate participants to review important information, discussion points, ideas, etc. on the whiteboard after the conference and is also convenient for subsequent sorting and archiving of the conference content.

[0053] Speaker close-up refers to the way of presenting the picture in a video conference by focusing on specific areas such as the face or upper body of the person speaking. In this way, other participants can more clearly see details such as the speaker's expression, movement, and tone, which helps to better understand the speaker's intention and emotion and improve the accuracy and effectiveness of information transmission. Compared with the panoramic picture of the entire conference scene, the speaker close-up allows participants to focus more on the speaker's expression and avoid being disturbed by other irrelevant factors. At the same time, it is also convenient to focus on and identify the speaker, enhancing the interactivity and sense of participation in the conference.

[0054] Avatar equal division means that in a video conference, areas such as the conference screen or the conference video window are evenly divided into several equal parts, and then the avatars and other images of the participants are arranged and displayed according to the equal division areas. The purpose is to more reasonably present the avatars of multiple participants in the limited screen space, enabling the avatar of each participant to be displayed relatively clearly without being too crowded or occupying too much space, facilitating participants to quickly identify and pay attention to other participants and promoting interaction and communication in the conference.

[0055] The receiving module 13 receives each encoded picture sent by the desktop base 21 in real time.

[0056] The decoding module 14 decodes each received encoded picture to obtain each close-up picture of the venue collected by each desktop camera 22.

[0057] The picture integration module 16 integrates the panoramic picture of the venue and each close-up picture of the venue according to the conference picture mode to generate a conference picture corresponding to the conference picture mode, and then the conference host transmits it to the video conferencing APP. For example: generate conference pictures in different picture modes such as picture-in-picture, host switching, whiteboard shooting, speaker close-up, headshot equalization, etc.

[0058] Specifically, in response to the conference picture mode and the selection instruction of the close-up picture of the venue, the panoramic picture of the venue and the corresponding close-up picture of the venue are integrated to generate a conference picture corresponding to the conference picture mode.

[0059] Among them, the corresponding close-up picture of the venue can be selected by the user. For example, after the user selects the conference picture mode, a selection interface for each close-up picture of the venue is pop-up displayed, and the user selects one or more close-up pictures of the venue as the target close-up picture of the venue. The picture integration module 16 integrates the panoramic picture of the venue and the target close-up picture of the venue according to the conference picture mode to generate a conference picture.

[0060] Taking picture-in-picture as an example, after the user selects a close-up picture of a venue, the close-up picture of the venue is embedded into the panoramic picture of the venue as the target close-up picture of the venue to generate a conference picture. If the user selects multiple close-up pictures of the venue as the target close-up picture of the venue, multiple close-up pictures of the venue can be embedded in the panoramic picture of the venue.

[0061] The close-up picture of the venue can also be automatically selected. Specifically, lip movement recognition is performed on the participants in each close-up picture video of the venue to identify the current speaker, and then the close-up picture of the venue where the current speaker is located is used as the target picture, and according to the conference picture mode, the panoramic picture of the venue and the target picture are integrated to generate a conference picture.

[0062] For the wireless transmission multi-camera system for a video conference room provided by the present invention, button switches corresponding to each desktop camera 22 can be set on the desktop base 21 to turn on or off the corresponding desktop camera 22, so as to reduce the amount of data for video encoding and decoding and transmission according to the actual situation of the conference scene, reduce the computing power, improve the transmission rate, and improve the picture quality and real-time performance.

[0063] In the above solution, the corresponding desktop camera 22 can also be turned on or off through the conference host.

[0064] Based on the above multi-camera device, the present invention further provides a multi-camera video conferencing system, including a video conferencing APP and the above multi-camera device. The main camera in the multi-camera device is used to collect the panoramic view of the conference venue in real time, and the desktop camera is used to collect the close-up views of the participants in different directions in real time. In response to the conference screen mode selection instruction, the panoramic view of the conference venue and each close-up view of the conference venue are integrated to generate a conference screen corresponding to the conference screen mode, and then transmitted to the video conferencing APP. Therefore, the solution of the present application can take into account both the panoramic view of the conference venue and the close-up views of the participants in the conference venue, improving the quality and efficiency of office work or meetings. Moreover, the implementation solution of the present application does not require a professional video switching matrix or splicer to synthesize the pictures and then output them to a video capture card and then connect to a third-party conference APP. The implementation method and operation of the present application are simple, with low cost and strong practicability.

[0065] The present invention further provides a method for implementing multi-camera video conferencing, as Figure 5 shown, the method includes the following steps:

[0066] Step 110, collect the panoramic view of the conference venue in real time through the main camera, and collect the close-up views of the participants in different directions in real time through one or more desktop cameras.

[0067] Step 120, encode each close-up view of the conference venue to generate each encoded picture.

[0068] Step 130, the conference host receives the panoramic view of the conference venue and each encoded picture in real time, and decodes each encoded picture to obtain each close-up view of the conference venue.

[0069] Step 140, in response to the conference screen mode selection instruction, integrate the panoramic view of the conference venue and each close-up view of the conference venue to generate a conference screen corresponding to the conference screen mode, and transmit it to the video conferencing APP.

[0070] In the above method, the main camera adopts a wide-angle design, and the video angle is ≥130°. As the panoramic camera of the entire conference room, it collects the panoramic view of the conference venue in real time. The main camera is connected to the conference host, and the conference host is connected to the video conferencing APP to provide the conference screen for the video conference.

[0071] The desktop camera is used to collect the close-up views of the participants in different directions in real time. The close-up views of the conference venue collected by the desktop camera can be transmitted to the conference host in a wired or wireless manner.

[0072] The number of desktop cameras can be set from 1 to 4, and users can choose independently according to their needs. Among them, when 2 desktop cameras are adopted, the 2 desktop cameras are set facing each other back to back to achieve a 180° shooting angle; when 3 desktop cameras are adopted, the 3 desktop cameras are set at 90 degrees to each other to achieve a 270° shooting angle; when 4 desktop cameras are adopted, the 4 cameras are set facing each other back to back in pairs to achieve a 360° shooting angle.

[0073] The encoding, decoding and picture integration of the close-up pictures of the meeting venue have been described in detail in the previous multi-camera video conferencing system and multi-camera device, and will not be elaborated here.

[0074] Based on the description of the above specific embodiments, a wireless transmission multi-camera system for a video conference room provided by the present invention has the following advantages compared with the prior art:

[0075] First, the panoramic picture of the meeting venue of the video conference is collected in real time by the main camera, and the close-up pictures of the participants in the meeting venue in different directions are collected in real time by the desktop camera; the conference host receives the panoramic picture and the close-up pictures of the meeting venue in real time and integrates them to generate a meeting picture corresponding to the meeting picture mode, and transmits it to the video conference APP. This solution does not require a professional video switching matrix or splicer for picture synthesis, and the implementation method and operation are simple, with low cost and strong practicability.

[0076] Second, the close-up pictures of the meeting venue are transmitted to the conference host in a wireless manner, which is convenient for the arrangement of the main camera component and the desktop camera component, or for moving the desktop camera component at any time to obtain the best close-up pictures of the meeting venue.

[0077] Third, multiple desktop cameras are integrated on the desktop base, and the desktop base is wirelessly connected to the conference host for transmitting each close-up picture of the meeting venue to the conference host. This implementation method avoids the space occupied by dispersedly placing multiple cameras on the desktop, makes the desktop cleaner, and also provides a more spacious working area for users.

[0078] Fourth, an encoding module is provided in the desktop base, and a decoding module is provided in the conference host. By encoding and decoding the close-up pictures of the meeting venue collected by different desktop cameras for distinction, it is convenient to integrate the panoramic picture of the meeting venue and each close-up picture of the meeting venue to generate a meeting picture.

[0079] Finally, it should also be noted that the term "including", "comprising" or any other variant thereof used in this text is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such a process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including said element.

[0080] The present invention is not limited to the above-described best embodiments. Anyone should know that structural changes made under the inspiration of the present invention, as long as they have the same or similar technical solutions as the present invention, fall within the protection scope of the present invention.

Claims

1. A method for implementing a multi-camera video conferencing system, characterized in that: The following steps are involved: The main camera is used to capture the panoramic view of the video conference venue in real time, and one or more desktop cameras are used to capture the close-up view of the venue of participants from different directions in real time; Encode the close-up images of each conference venue to generate each encoded image; The conference host receives the panoramic view of the conference venue and each coded picture in real time, and decodes each coded picture to obtain a close-up picture of each conference venue; In response to the conference screen mode selection instruction, the panoramic screen of the conference venue and the close-up screens of each conference venue are integrated to generate a conference screen corresponding to the conference screen mode, which is transmitted to the video conferencing APP.

2. The method according to claim 1, characterized in that The conference host receives each coded picture wirelessly.

3. The method according to claim 1, characterized in that The one or more desktop cameras are arranged on a desktop base, and the desktop base encodes each close-up picture of the conference venue to form each encoded picture, and sends the encoded pictures to the conference host in real time.

4. The method according to claim 1, characterized in that The desktop base is provided with 1 to 4 desktop cameras, wherein: When two desktop cameras are arranged on the desktop base, the two desktop cameras are arranged back to back to achieve a 180° shooting angle; When three desktop cameras are arranged on the desktop base, the three desktop cameras are arranged at 90 degrees to each other to achieve a 270° shooting angle; When four desktop cameras are arranged on the desktop base, the four cameras are arranged back to back in pairs to achieve a 360° shooting angle.

5. A multi-camera device for a multi-camera video conferencing system, characterized in that: include: A desktop camera assembly includes a desktop base on which one or more desktop cameras are arranged, and the desktop cameras are used to collect close-up images of conference participants from different directions in real time, and encode each close-up image of the conference venue to generate each encoded image; The main camera assembly includes a main camera and a conference host, wherein the main camera is used to capture a panoramic view of the conference venue; The conference host receives the panoramic picture of the venue and the various encoded pictures in real time, decodes the various encoded pictures to obtain the close-up pictures of the venue, and responds to the conference picture mode selection instruction to integrate the panoramic picture of the venue and the close-up pictures of the venue to generate a conference picture corresponding to the conference picture mode for transmission to the video conferencing APP.

6. The system according to claim 5, characterized in that The desktop base is provided with an encoding module and a sending module, the encoding module is used to encode each of the conference room close-up pictures to generate each of the encoded pictures, and the sending module is used to send each of the encoded pictures to the conference host; The conference host is provided with a receiving module, a decoding module, a mode selection module and a picture integration module. The receiving module receives the various encoded pictures in real time, the decoding module decodes the various encoded pictures to obtain the close-up pictures of the various conference venues, the mode selection module is used to select the conference picture mode, and the picture integration module is used to integrate the panoramic picture of the conference venue and the close-up pictures of the various conference venues according to the conference picture mode to generate the conference picture.

7. The system according to claim 6, characterized in that The sending module and the receiving module both adopt wireless modules.

8. The system according to claim 5, characterized in that The conference screen modes include at least: picture-in-picture, host switching, whiteboard shooting, speaker close-up and head portrait division.

9. The system according to claim 5, characterized in that The desktop base is provided with 1 to 4 desktop cameras, wherein: When two desktop cameras are arranged on the desktop base, the two desktop cameras are arranged back to back to achieve a 180° shooting angle; When three desktop cameras are arranged on the desktop base, the three desktop cameras are arranged at 90 degrees to each other to achieve a 270° shooting angle; When four desktop cameras are arranged on the desktop base, the four cameras are arranged back to back in pairs to achieve a 360° shooting angle.

10. A multi-camera video conferencing system, including a video conferencing APP, characterized in that: It also includes the multi-camera device as described in any one of claims 5 to 9, and the conference host transmits the conference screen to the video conferencing APP.

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