WO2015192631A1

WO2015192631A1 - Video conferencing system and method

Info

Publication number: WO2015192631A1
Application number: PCT/CN2014/095179
Authority: WO
Inventors: 张泽良; 谭笑; 李军; 黄云鹏
Original assignee: 中兴通讯股份有限公司
Priority date: 2014-06-17
Filing date: 2014-12-26
Publication date: 2015-12-23
Also published as: CN105306868B; CN105306868A

Abstract

Disclosed are a video conferencing system and method, the method comprising the following steps: obtaining environmental information and/or audio information of a current conference site and data information indicating the video conference screen content (S102); generating control information according to the environmental information and/or the audio information (S104); projecting to multiple video conference screens respectively according to the control information and data information, the control information being used to indicate position and/or size of the projection display of some or all of the multiple video conference screens (S106). The present invention solves the problem of poor user operation or user experience caused by fixed display size and/or display position of the video conference screen projection in a video conference system, improving the user experience.

Description

Video conference system and method

Technical field

The present invention relates to the field of communications, and in particular to a video conferencing system and method.

Background technique

Panasonic has announced its implementation of the Air Touch Display (FID). The aerial touch screen technology mainly includes aerial imaging technology and laser time-of-flight (TOF) positioning technology, in which the aerial imaging technology forms a real image above the projection plate through the projection plate; the laser time-of-flight positioning technology passes through The screen capture device acquires the laser flight time and calculates the distance from the object based on the laser flight time. The laser time-of-flight positioning technology can capture the user's action on the real image of the aerial imaging technology.

At present, video conferences mostly use conference terminals + display devices. In this mode, the video projection control or the input of text and images is generally performed by means of a mouse or a keyboard; even if some display devices have been added with a touch function, the touch position is fixed and the display size is fixed, and still exists. Control single, single interaction and other issues.

For the problem that the display size and/or the display position of the video conference screen projection in the video conferencing system in the related art is poor, the user operation or the experience is poor, and an effective solution has not been proposed yet.

Summary of the invention

The embodiment of the present invention provides a video conference system and method, to at least solve the problem of poor user operation or experience caused by fixed display size and/or display position of a video conference screen projection in a video conference system in the related art.

According to an aspect of the present invention, a video conferencing system includes: a control processing device, a plurality of projection display devices, a plurality of image capturing devices, and a plurality of audio capturing devices, wherein the plurality of projection display devices are The current conference site center is disposed to be circumferentially disposed, and is configured to respectively project a plurality of video conference screens according to the control information and the data information sent by the control processing device, wherein the control information is used to indicate a part of the plurality of video conference screens Or the location and/or size of the video conference screen projection display; the plurality of image capture devices configured to capture environmental information of the current conference site and transmit the environmental information to the control processing device; a plurality of audio capture devices configured to capture audio information of the current conference site and transmit the audio information to the control processing device; the control processing device respectively associated with the plurality of projections The display device, the plurality of image capturing devices, and the plurality of audio capturing devices are connected, configured to generate the control information according to the received environmental information and/or the audio information, and send the control information To the projection display device.

Optionally, the projection display device includes: a display position adjustment unit configured to adjust a position of the plurality of video conference screens to be displayed according to the control information; and/or a display size adjustment unit, configured to Control information, adjusting the size of the projection display of the plurality of video conference screens.

Optionally, the plurality of image capturing devices are disposed facing the conference site center around the current conference site, or are disposed around the center of the current conference site.

Optionally, the plurality of audio capture devices are disposed facing the conference site center around the current conference site, or are disposed around the center of the current conference site.

Optionally, the control processing device includes: a signal receiving unit, a first processing unit and/or a second processing unit, a control information generating unit, and a signal sending unit, wherein the signal receiving unit is configured to receive the environment Information and/or the audio information; the first processing unit is configured to determine, within the capture range of the image capture device corresponding to the environment information, according to image features in the environment information sent by the corresponding image capture device The second processing unit is configured to determine location information of the corresponding one or more audio sources in the audio information according to the audio information sent by the multiple audio capture devices; the control information a generating unit, configured to determine, according to the participant number information, a display size of a corresponding video conference screen in a capturing direction of the corresponding image capturing device, and/or determine a display size of the video conference screen corresponding thereto according to the location information / or display the location, and generate the control information according to the determined display size and / or display location; A signal transmitting unit configured to transmit the control information, and means for generating the video conference screen display of the data information to the projection.

Optionally, the audio information includes volume information, and at least one of the following: frequency information, timbre information.

Optionally, the plurality of projection display devices respectively form an aerial imaging technology to form the plurality of video conference screens.

Optionally, the projection display device further includes: an operation action capturing unit configured to capture an operation action performed by the user on the plurality of video conference screens; and an operation action sending unit configured to send the information of the operation action To the control processing device.

Optionally, the control processing device further includes: an operation action analysis unit configured to parse the operation action as an operation instruction, wherein the operation instruction includes a display for indicating a current video conference screen An operation instruction for small and/or display position, and/or an operation instruction for inputting graphics and/or text information to a corresponding position in the currently displayed video conference screen; wherein the control information generation unit is further configured to The display size and/or display position of the currently operated video conference screen indicated by the operation instruction generates the control information.

Optionally, the control processing device further comprises: a data information processing unit configured to update the data information according to an operation for inputting graphics and/or text information to a corresponding position in the currently displayed video conference screen.

Optionally, the video conferencing system further includes: a network interaction device, connected to the control processing device, configured to: the control processing device interacts with the control processing device in the video conferencing system as described above, and the data information and / or an operation instruction for inputting graphic and/or text information to a corresponding position in the currently displayed video conference screen.

According to another aspect of the present invention, a video conferencing method is further provided, comprising: acquiring environmental information and/or audio information of a current conference site, and data information indicating content of the video conference screen; according to the environmental information and/or And generating, by the audio information, a plurality of video conference screens according to the control information and the data information, where the control information is used to indicate some or all of the video conferences in the plurality of video conference screens. The position and/or size of the screen projection display.

Optionally, the method further includes: applying the aerial imaging technology to form the plurality of video conference pictures.

Through the present invention, the environment information and/or audio information of the current conference site is acquired, and the data information indicating the content of the video conference screen is used; the control information is generated according to the environment information and/or the audio information; and the projection information is separately projected according to the control information and the data information. a plurality of video conference screens, wherein the control information is used to indicate a position and/or a size of a part or all of the video conference screens in the plurality of video conference screens, and the display size of the video conference screen projections in the video conference system is solved. / / Display the problem of poor user operation or poor experience caused by fixed location, improving the user experience.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

FIG. 1 is a schematic flowchart diagram of a video conference method according to an embodiment of the present invention; FIG.

2 is a schematic structural diagram of a video conference system according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a preferred structure of a video conference system according to an embodiment of the present invention; FIG.

4 is a schematic diagram of a video conference initial model 0 according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a video conference initial model 1 according to an embodiment of the present invention; FIG.

6 is a schematic diagram of a video conference interaction model according to an embodiment of the present invention;

7 is a schematic diagram of a video conference interaction model-interaction in the same direction according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of a video conference interaction model-multiple person sharing interaction according to an embodiment of the present invention.

detailed description

It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments.

The steps illustrated in the flowchart of the figures may be performed in a computer system such as a set of computer executable instructions, and although the logical order is shown in the flowchart, in some cases, may differ from this The steps shown are performed in the order shown or described.

This embodiment provides a video conference method. FIG. 1 is a schematic flowchart of a video conference method according to an embodiment of the present invention. As shown in FIG. 1, the method includes the following steps:

Step S102: Acquire environment information and/or audio information of the current conference site, and data information indicating content of the video conference screen;

Step S104, generating control information according to environment information and/or audio information;

Step S106, respectively projecting a plurality of video conference screens according to the control information and the data information, wherein the control information is used to indicate the position and/or size of the partial or full video conference screen projection display in the plurality of video conference screens.

Through the above steps, the video conference screen projection display of different positions and/or sizes is performed by collecting environmental information and/or audio information, thereby solving the problem that the display size and/or the display position of the video conference screen projection in the video conference system is fixed. Improve the user experience by operating or experiencing poor problems. Among them, by using the aerial imaging technology and the laser time-of-flight positioning technology for user operation acquisition, the user's operation can be made more flexible and convenient by adjusting the display size and/or display position of the video conference screen projection.

Preferably, an aerial imaging technique is applied in the above method to form a plurality of video conference pictures. Among them, aerial imaging technologies include, but are not limited to, the technology disclosed by Panasonic Corporation or other well-known aerial imaging technologies.

In order to implement the above method, a video conference system is provided in this embodiment. It should be noted that the video conference system described in the system embodiment corresponds to the foregoing video conference method embodiment, and the structure of a specific module or unit in the system may not be well known, but those skilled in the art may refer to known techniques. And the technical content disclosed in this embodiment can be easily realized. Furthermore, the functions of the modules or units exemplified in the system embodiments can be implemented as the implementation steps of the above method embodiments, and implemented in combination with existing steps.

2 is a schematic structural diagram of a video conference system according to an embodiment of the present invention. As shown in FIG. 2, the video conference system includes: a control processing device 22, a plurality of projection display devices 24, a plurality of image capturing devices 26, and a plurality of audios. The capturing device 28, wherein the plurality of projection display devices 24 are disposed around the current conference site center, and are configured to project a plurality of video conference screens according to the control information and the data information sent by the control processing device 22, wherein the control information is used for And indicating a position and/or a size of the partial or full video conference screen projection display in the plurality of video conference screens; the plurality of image capturing devices 26 are configured to capture environment information of the current conference site, and send the environment information to the control processing device 22 a plurality of audio capture devices 28 configured to capture audio information of the current conference site and transmit the audio information to the control processing device 22; the control processing device 22, and the plurality of projection display devices 24, the plurality of image capture devices 26, and A plurality of audio capture devices 28 are connected, arranged to receive environmental information and/or audio information according to Generating control information, and control information transmitted to the projection display apparatus 24.

The modules and units involved in the embodiments of the present invention may be implemented by software or by hardware. The described modules and units in this embodiment may also be disposed in a processor, for example, as a processor including a control processing device 22, a plurality of projection display devices 24, a plurality of image capturing devices 26, and a plurality of Audio capture device 28. Wherein, the names of these modules do not constitute a limitation on the module itself under certain circumstances. For example, the control processing device 22 may also be described as "set to generate control information according to received environmental information and/or audio information. The control information is sent to the module of the projection display device 24.

The connection manner of the control processing device 22 with the plurality of projection display devices 24, the plurality of image capturing devices 26, and the plurality of audio capturing devices 28 includes a wired connection and a wireless connection, wherein the wireless connection includes, but is not limited to, a Bluetooth connection, and a WiFi connection. Connection method such as connection.

Optionally, the above-mentioned projection display device 24 includes: a display position adjusting unit configured to adjust a position of the projection display of the plurality of video conference screens according to the control information; and/or a display size adjustment unit, configured to adjust according to the control information The size of the video conference screen projection display.

Optionally, a plurality of image capturing devices 26 are disposed facing the conference site center around the current conference site, or are disposed around the center of the current conference site.

Optionally, a plurality of audio capture devices 28 are disposed around the conference site center around the current conference site, or at the center of the current conference site.

Optionally, the control processing device 22 comprises: a signal receiving unit, a first processing unit and/or a second processing unit, a control information generating unit, a signal transmitting unit, wherein the signal receiving unit is configured to receive environmental information and/or audio The first processing unit is configured to determine, according to the image feature in the environment information sent by the corresponding image capturing device 26, the number of participants in the capturing range of the image capturing device 26 corresponding to the environment information; the second processing unit, setting The position information of the corresponding one or more sound sources in the audio information is determined according to the audio information transmitted by the plurality of audio capturing devices 28; the control information generating unit is configured to determine the capturing direction of the corresponding image capturing device 26 according to the number of participants Displaying a display size of the corresponding video conference screen, and/or determining a display size and/or a display position of the video conference screen corresponding thereto according to the location information, and generating control information according to the determined display size and/or display position; the signal sending unit Set to send control information to the projection display device 24 and for generating Data video conference screen.

Optionally, the audio information includes volume information, and at least one of the following: frequency information, timbre information. Different frequency information or timbre information can be used to identify different sound sources, and combined with volume information to achieve separate positioning of different sound sources.

Optionally, the plurality of projection display devices 24 respectively form a plurality of video conference screens using aerial imaging technology.

Optionally, the projection display device 24 further includes: an operation action capturing unit configured to capture an operation action performed by the user on the plurality of video conference screens; and an operation action transmitting unit configured to transmit the information of the operation action to the control processing device 22 .

Optionally, the control processing device 22 further includes: an operation action analysis unit configured to parse the operation action as an operation instruction, wherein the operation instruction includes an operation instruction for indicating a display size and/or a display position of the currently operated video conference screen And/or an operation instruction for inputting graphics and/or text information to a corresponding position in the currently displayed video conference screen; wherein the control information generating unit is further set to the currently operated video conference screen according to the operation instruction Display size and/or display position generation control information.

Optionally, the control processing device 22 further includes: a data information processing unit configured to update the data information according to an operation for inputting graphics and/or text information to a corresponding position in the currently displayed video conference screen. The input graphic and/or text information is superimposed on the data information according to the corresponding input position, and is distributed to the plurality of projection display devices 24 for display by the control processing device 22.

FIG. 3 is a schematic diagram of a preferred structure of a video conference system according to an embodiment of the present invention. As shown in FIG. 3, optionally, the video conference system further includes: a network interaction device 30 connected to the control processing device 22 and configured to be controlled. The processing device 22 interacts with other control processing devices in the video conferencing system as described above with data information and/or operational instructions for inputting graphics and/or text information to corresponding locations in the currently displayed video conference screen. In this way, information interaction with a remote video conferencing system on the network is achieved.

In order to make the technical solutions and implementation methods of the present invention clearer, the implementation process will be described in detail below in conjunction with the preferred embodiments.

The preferred embodiment adopts sound localization and camera omnidirectional conference room image information collection for the limitation of the current conference; in some preferred manners, the image size and the information to be exchanged may also be controlled by gesture control.

The present invention preferably provides a video conference display, interaction, and control method, including: the conference terminal directly projects to the center of the conference room according to the number of conferences, and dynamically displays the default projection size according to the number of people. At the same time, according to the sound source to draw the projection distance, the current presenter can write relevant information on the projection according to the gesture. Related information is processed after processing. The immersive video conferencing method scans the current information of the conference room through the comprehensive camera group, locates the current conference speaker through the sound sensor, and interactively displays the conference state through the projection scanning device. The projection collection device and the camera group can be connected to the terminal device through USB, WiFi, Bluetooth, and the like. Through the above method, flexible display of the adaptive display of the conference image and the input of the information can be realized.

The following techniques or methods are employed in the preferred embodiment:

1. Use the 360-degree panoramic camera group to collect the conference room environment. The current conference TV uses a single camera and is fixed in a corner of the conference room. This design can only collect environmental information in a specific direction. In the preferred embodiment, a camera set having a plurality of cameras is used, which can be fixed in the center of the conference table to realize panoramic information collection of the conference room.

2. A microphone with a sound localization sensor for sound collection and sound source localization. Current microphones only implement sound input and sound output. In the preferred embodiment, the sound location sensor is used to determine the specific location of the current speaker of each aspect of the conference.

3. The projection acquisition input device (corresponding to the above-mentioned operation motion capture unit) recognizes the gesture trajectory tracking and positioning control. Currently, the conference TV is controlled by a web interface control or an infrared remote controller. The image is displayed by a display device such as a television or a projection. The whiteboard operation needs to be operated by the pen on the fixed whiteboard in the conference room, and the other party in the meeting has no way to directly change the objection on the other party's whiteboard. Even if the current electronic whiteboard technology can only solve the meeting, the other party can directly change the object on the other party's whiteboard, but the modified person needs to go to the electronic whiteboard area for information interaction. The preferred embodiment directly controls the terminal device by the projection acquisition device (corresponding to the above-described operation action capture unit) recognizing the gesture of the current speaker. It is also possible to change the size of the projected area according to the gesture, and the distance of the projected image from the speaker. At the same time, according to the gesture, the information exchange of the electronic whiteboard can be directly performed.

The core idea of the preferred embodiment is to improve the video conferencing user experience and close proximity participation. Traditional interaction requires an oil-based pen to be input on the whiteboard device, and the camera is manually controlled to capture the whiteboard content. Even if the electronic whiteboard device has recently received a fixed location of the device, the interaction needs to go into the scope of the electronic whiteboard to operate. The size of the displayed image at the same time is limited by the display device. However, in order to improve the user experience and the convenience of the user using the smart input device, the preferred embodiment realizes a random interactive experience at any position.

The video conference display scenario provided by the preferred embodiment provides a conference state by stereoscopic display. For example, a stereoscopic display image formed by Panasonic aerial imaging technology.

At the beginning of the meeting, the terminal will display whether it is a single-direction display or (east, south, west, and north) according to the distribution of the number of people in the meeting (such as the initial state of the meeting, the default East, South, West, and North participants will display the meeting status. ), as shown in Figure 4; according to the number of participants in a certain direction to change the size of the default display image (such as the initial state of the conference 1 through the camera to collect information found that more participants in the east, the east projection image default Larger, as shown in Figure 5.) At the same time, the person in a specific direction can control the size of the image displayed in one direction through the projection collection device.

When a speaker in a certain direction needs to interact, the interactive state of the conference shown in FIG. 6 and FIG. 7; the terminal device determines the current speaker position according to the sound sensing device, and recognizes the gesture of the speaker by the projection collection device, The distance projection acquisition device displays the distance, and the size of the projection can be adjusted by sliding the gesture. The projection acquisition device is currently a touch of size and control, and the publisher can publish content by finger input within the projection range (as if writing on a blackboard with chalk). The projection collection device transmits the collection information to the terminal (corresponding to the control processing device 22), and the terminal is processed and displayed on the display device in each direction and/or transmitted to the remote conference device through the network device.

Others need to modify the current display content, just zoom in on the projected image in this direction, and directly input the information on the projection device, as shown in the conference interaction model shown in Figure 8 - multi-person shared interaction. After the comments are published, the speaker can swing the gesture at the same time, and the camera controls the projection screen away from the speaker according to the received information. The meeting reverts to the initial conference model shown in Figure 4 or Figure 5.

The person in this direction needs to modify the current display content, directly pull the projection image closer to himself, and directly input the information on the projection device, as shown in the conference interaction model shown in FIG. 7 - interaction in the same direction. After the modification, the projected image is centered according to the gesture.

The publisher ends the meeting and the image is returned to the meeting initial model 0 or initial model 1.

In summary, according to the above embodiment of the present invention, the environment information and/or audio information of the current conference site and the data information indicating the content of the video conference screen are acquired; and the environment information and/or the audio information are generated according to the environment information and/or the audio information. Controlling information; respectively, projecting a plurality of video conference screens according to the control information and the data information, wherein the control information is used to indicate a position and/or a size of a part or all of the video conference screens in the plurality of video conference screens, and the solution is solved. The user's operation or poor experience caused by the fixed display size and/or display position of the video conference screen projection in the video conference system improves the user experience.

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in a storage device by a computing device, or they may be fabricated into individual integrated circuit modules, or Multiple modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Industrial applicability

As described above, the video conference system and method provided by the embodiments of the present invention have the following beneficial effects: video conference screen projection display of different positions and/or sizes by collecting environment information and/or audio information, thereby solving the video conference. The user's operation or poor experience caused by the fixed display size and/or display position of the video conference screen projection in the system improves the user experience. Among them, by using the aerial imaging technology and the laser time-of-flight positioning technology for user operation acquisition, the user's operation can be made more flexible and convenient by adjusting the display size and/or display position of the video conference screen projection.

Claims

A video conferencing system includes: a control processing device, a plurality of projection display devices, a plurality of image capturing devices, and a plurality of audio capturing devices, wherein

The plurality of projection display devices are disposed at a periphery of the current conference site center, and are configured to respectively project a plurality of video conference screens according to the control information and the data information sent by the control processing device, wherein the control information is used to indicate Position and/or size of a partial or full video conference screen projection display of the plurality of video conference screens;

The plurality of image capturing devices are configured to capture environmental information of the current meeting site, and send the environmental information to the control processing device;

The plurality of audio capture devices are configured to capture audio information of the current conference site, and send the audio information to the control processing device;

The control processing device is respectively connected to the plurality of projection display devices, the plurality of image capturing devices, and the plurality of audio capturing devices, and is configured to be based on the received environmental information and/or the audio information. The control information is generated and transmitted to the projection display device.
The video conferencing system of claim 1 wherein said projection display device comprises:

a display position adjustment unit configured to adjust a position of the projection display of the plurality of video conference screens according to the control information; and/or

The display size adjustment unit is configured to adjust a size of the projection display of the plurality of video conference screens according to the control information.
The video conferencing system according to claim 1, wherein the plurality of image capturing devices are disposed facing the conference site center around the current conference site, or are disposed around the center of the current conference site.
The video conferencing system according to claim 1, wherein the plurality of audio capturing devices are disposed facing the conference site center around the current conference site, or are disposed around the center of the current conference site.
The video conferencing system according to claim 1, wherein the control processing device comprises: a signal receiving unit, a first processing unit and/or a second processing unit, a control information generating unit, and a signal transmitting unit, wherein

The signal receiving unit is configured to receive the environmental information and/or the audio information;

The first processing unit is configured to determine, according to the image feature in the environment information sent by the corresponding image capturing device, the number of participants in the capturing range of the image capturing device corresponding to the environment information;

The second processing unit is configured to determine location information of the corresponding one or more audio sources in the audio information according to the audio information sent by the multiple audio capture devices;

The control information generating unit is configured to determine, according to the number of participants information, a display size of a video conference screen corresponding to a capture direction of the corresponding image capturing device, and/or determine a video conference screen corresponding thereto according to the location information. Display size and/or display position, and generate the control information according to the determined display size and/or display position;

The signal transmitting unit is configured to transmit the control information and the data information for generating the video conference screen to the projection display device.
The video conferencing system of claim 1, wherein the audio information comprises volume information, and at least one of: frequency information, timbre information.
The video conferencing system according to any one of claims 1 to 6, wherein the plurality of projection display devices respectively form an aerial imaging technique to form the plurality of video conference screens.
The video conferencing system of claim 7, wherein the projection display device further comprises:

An operation action capturing unit configured to capture an operation performed by a user on the plurality of video conference screens;

The operation action transmitting unit is configured to transmit information of the operation action to the control processing device.
The video conferencing system of claim 8, wherein the control processing device further comprises:

An operation action analysis unit configured to parse the operation action as an operation instruction, wherein the operation instruction includes an operation instruction for indicating a display size and/or a display position of the currently operated video conference screen, and/or for An operation instruction for inputting graphics and/or text information at a corresponding position in the currently displayed video conference screen;

The control information generating unit is further configured to generate the control information according to a display size and/or a display position of a currently operated video conference screen indicated by the operation instruction.
The video conferencing system of claim 9, wherein the control processing device further comprises:

The data information processing unit is configured to update the data information according to an operation for inputting graphic and/or text information to a corresponding position in the currently displayed video conference screen.
The video conferencing system according to any one of claims 1 to 6, 8 to 10, wherein the video conferencing system further comprises:

a network interaction device, coupled to the control processing device, configured to interact with the control processing device in the video conferencing system according to any one of claims 1 to 6, 8 to 10 Information and/or operational instructions for inputting graphical and/or textual information to corresponding locations in the currently displayed video conference screen.
A video conferencing method includes:

Obtaining environmental information and/or audio information of the current conference site, and data information indicating the content of the video conference screen;

Generating control information according to the environmental information and/or the audio information;

And respectively, according to the control information and the data information, respectively projecting a plurality of video conference screens, wherein the control information is used to indicate a position and/or a size of a part or all of the video conference screens of the plurality of video conference screens. .
The video conferencing method of claim 12, wherein the method further comprises applying the aerial imaging technique to form the plurality of video conference pictures.