CN113630575B - Method, system and storage medium for displaying images of multi-person online video conference - Google Patents
Method, system and storage medium for displaying images of multi-person online video conference Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000009877 rendering Methods 0.000 claims abstract description 9
- 238000004590 computer program Methods 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims 1
- 230000006870 function Effects 0.000 description 3
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0484—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/40—Support for services or applications
- H04L65/403—Arrangements for multi-party communication, e.g. for conferences
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/75—Media network packet handling
Abstract
The invention relates to a method, a system and a storage medium for displaying images of a multi-person online video conference, wherein the method comprises the following steps: each first device performs a first encoding operation on the acquired image data, and sends the obtained first encoding data to a second device for rendering; the second device detects the image frame to acquire the focus operation, determines the first device corresponding to the image frame as the target first device, and sends a request for acquiring second coded data of the target first device to the cache server; respectively processing the second coded data of the target first device which is being received by the cache server and the second coded data of the target first device which is not being received by the cache server, and sending the second coded data of the target first device to the cache server, wherein the cache server forwards the second coded data to the second device; and the second device decodes the second encoded data and renders the decoded image data into an image frame corresponding to the target first device for display. The performance of the multi-person online video conference is optimized.
Description
Technical Field
The invention relates to the application field of image processing in remote video conferences, in particular to a method, a system and a storage medium for displaying images of a multi-person online video conference.
Background
In the teleconferencing field, different platforms can realize multi-person teleconferencing, such as enterprise WeChat and nail, but both can only realize multi-person voice conference. The video conference can only support the online of a small number of people on the same screen, and the requirement of the multi-person video conference can not be met.
In technical implementation, the multi-person video conference on-screen display has high requirements on the performance of the GPU (Graphics Processing Unit, graphics processor) of the device. At present, due to the bottleneck of hardware performance, the application of the multi-person video conference is limited.
Disclosure of Invention
In view of the above, a method, a system and a storage medium for displaying images of a multi-person online video conference are provided, so as to solve the problem that the multi-person online video conference is affected by the hardware performance of the device in the prior art.
The invention adopts the following technical scheme:
in a first aspect, an embodiment of the present application provides a method for displaying images of a multi-person online video conference, where the method includes:
each first device performs a first encoding operation on the acquired image data, and sends the obtained first encoding data to a second device for rendering;
the second device detects an image frame to acquire focus operation, determines a first device corresponding to the image frame as a target first device, and sends a request for acquiring second coded data of the target first device to a cache server;
if the cache server is receiving the second coded data of the target first device, the second device receives the second coded data forwarded by the cache server and sends a request for stopping sending the first coded data to the cache server;
if the cache server does not receive the second encoded data of the target first device, the cache server sends a second encoded data request message to the target first device, the target first device performs second encoding on the acquired image data and sends the obtained second encoded data to the cache server, and the cache server forwards the second encoded data to the second device;
and the second device decodes the second encoded data and renders the decoded image data to an image frame corresponding to the target first device for display.
In a second aspect, embodiments of the present application provide a system for displaying images of a multi-person online video conference, the system comprising:
a processor, and a memory coupled to the processor;
the memory is used for storing a computer program, and the computer program is at least used for executing the method for displaying the multi-person online video conference image according to the first aspect of the embodiment of the application;
the processor is configured to invoke and execute the computer program in the memory.
In a third aspect, embodiments of the present application provide a storage medium storing a computer program, where the computer program is executed by a processor to implement each step in the method for displaying images of a multiplayer online video conference according to the first aspect.
Through the technical scheme, the method and the device solve the problem that the video conference of more than hundred people on line in real time can not display images of all devices at the same time, greatly save the performance consumption of the GPU of the devices, and enable users corresponding to any device to see images of users corresponding to all other devices on a screen. When a user corresponding to one device needs to watch the image of the user corresponding to one other device in detail, or needs to watch the image of the current speaker, the mouse can be moved into the image frame of the corresponding user, or the image frame of the corresponding user is clicked by a finger on the mobile terminal, so that a smoother picture can be displayed on the image frame of the corresponding user. The system is simple to operate and strong in experience, so that time is greatly saved for users, and comfort is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a method for displaying images of a multi-person online video conference according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a system for displaying images of a multi-person online video conference according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, based on the examples herein, which are within the scope of the invention as defined by the claims, will be within the scope of the invention as defined by the claims.
Firstly, an application scenario of the embodiment of the present application is described, where the embodiment of the present application may be applied to a multi-person online video conference, where a device for displaying a current picture is referred to as a second device, may be represented by a device B, and a source device of the current picture is referred to as a first device, where the first device defaults to multiple devices, and is represented by A1, A2, …, an, and n is the number of the first devices. In this way, in the multi-person online video conference, the person of the second device may view the pictures of n first devices, or may see in detail the user object corresponding to a certain first device, and this certain first device is referred to as the target first device. It should be noted that the first device and the second device have no primary and secondary distinction, and the distinction is made for convenience of description and by way of illustration.
Examples
Fig. 1 is a flowchart of a method for displaying images of a multi-person online video conference according to an embodiment of the present invention, where the method may be performed by a system for displaying images of a multi-person online video conference according to an embodiment of the present invention, and the apparatus may be implemented in software and/or hardware. Referring to fig. 1, the method may specifically include the steps of:
s101, each first device performs first coding operation on the acquired image data, and sends the obtained first coding data to a second device for rendering.
Among them, JPEG (Joint Photographic Experts Group ) is a picture coding format. Optionally, the first encoded data is JPEG encoded data. In addition, the format of the first encoded data may also be a proprietary protocol encoding format developed by the user.
Specifically, 10 first devices are taken as examples, and are respectively denoted by A1, A2, A3, A4, A5, A6, A7, A8, A9 and a10, and each first device continuously collects user image data through a camera. In a specific example, the image data is color space format data, for example, the color space format data is YUV data, which is a color space format when the camera collects data. And then each first device performs a first coding operation on the acquired image data, and sends the obtained JPEG data of the first coding data to the second device for rendering.
S102, the second device detects the image frame to acquire the focus operation, determines the first device corresponding to the image frame as the target first device, and sends a request for acquiring second coded data of the target first device to the cache server.
When the user of the second device wants to see the picture of a certain first device in detail, the mouse can be moved into the image frame of the first device, or the image of the first device is clicked on the screen by a finger. In a specific example, for example, a corporate headquarter gives each branch a meeting, each branch may view a detailed view of the headquarter or other branch's picture.
Specifically, after determining the target first device, the second device sends a request for obtaining second encoded data of the target first device to the cache server. Alternatively, the second encoded data is H264 encoded data, H264 encoding being a highly compressed digital video encoder standard. That is, in order to obtain a smoother picture when viewed in detail, the second encoding operation may employ H264 encoding.
S1031, if the cache server is receiving the second coded data of the target first device, the second device receives the second coded data forwarded by the cache server and sends a request for stopping sending the first coded data to the cache server.
Specifically, after the cache server receives the request of the second target device, the state of the current data received by the cache server is judged. If the cache server is receiving the second coded data of the target first device, the second device requests the cache server to stop sending the first coded data after receiving the second coded data forwarded by the cache server. Thus, in the display screen of the second device, a more detailed and smoother screen of the target first device can be seen.
S1032, if the cache server does not receive the second encoded data of the target first device, the cache server sends a second encoded data request message to the target first device, the target first device performs second encoding on the acquired image data, and sends the obtained second encoded data to the cache server, and the cache server forwards the second encoded data to the second device.
In addition, if the cache server does not receive the second encoded data of the target first device, the cache server transmits a second encoded data request message to the target first device, that is, requests the target first device to transmit the second encoded data to the second device. At this time, the target first device performs second encoding, for example, H264 encoding, on the acquired image data, and then sends second encoded data obtained by the second encoding to the cache server through an RTP (Real-time Transport Protocol ) protocol, and the cache server sends the second encoded data to the second device.
And S104, the second device decodes the second encoded data, and renders the decoded image data into an image frame corresponding to the target first device for display.
In a specific example, the second device decodes the second encoded data from the target first device, and after the decoding is successful, renders the decoded image data into the image frame corresponding to the target first device. Thus, the detailed and smoother picture of the target first device can be seen on the display picture of the second device.
Therefore, the method and the device solve the problem that the video conference of more than hundred people on line in real time can not display images of all devices at the same time, greatly save the performance consumption of the GPU of the devices, and enable users corresponding to any device to see images of users corresponding to all other devices on a screen. When a user corresponding to one device needs to watch the image of the user corresponding to one other device in detail, or needs to watch the image of the current speaker, the mouse can be moved into the image frame of the corresponding user, or the image frame of the corresponding user is clicked by a finger on the mobile terminal, so that a smoother picture can be displayed on the image frame of the corresponding user. The system is simple to operate and strong in experience, so that time is greatly saved for users, and comfort is improved.
Optionally, the sending, by each first device, first encoded data obtained by performing a first encoding operation on the collected image data to the second device to perform rendering may specifically include: each first device collects image data and respectively performs initial coding on the image data to obtain first coded data; each first device respectively sends the first coded data to the cache server through a set transmission protocol; the cache server forwards the first coded data to the second device; the second device renders the first encoded data. Wherein, the transmission protocol is set as RTP protocol.
Illustratively, initially encoding the image data includes: and extracting the image data of the set frame number in the set time to perform initial coding. In a specific example, the set time may be 1 second, and the set frame number may be 2 frames, so that each first device extracts image data collected by the 2 frames of cameras for initial encoding within 1 second.
On the basis of the technical scheme, the technical scheme of the application further comprises the following steps: and if the cache server receives a request of stopping sending the first coded data and/or the second coded data from the target first equipment, stopping sending the data. And if the cache server receives a request of stopping sending the first coded data and/or the second coded data from the target first device, the cache server indicates that the first device temporarily interrupts the conference or sends the second coded data under other conditions, and at the moment, the cache server stops sending the corresponding data to the second device.
On the basis of the technical scheme, the technical scheme of the application further comprises the following steps: and if the second device detects that the image frame of the target first device loses focus, sending a request for stopping sending the second coded data by the target first device and a request for continuing sending the first coded data to the cache server. If a user operates a mouse to remove an image frame of the target first device, or when a finger points an image of the target first device on a screen again, the image frame is indicated to lose focus, at the moment, the second device detects that the image frame of the target first device loses focus, at the moment, the second device sends a request for stopping sending second coded data by the target first device to a cache server, and then the data sending is stopped; and the second equipment sends a request for continuing to send the first coded data to the cache server, and continues to send the first coded data, so that the second equipment can stop watching the detailed picture of the target first equipment and switch to a normal display picture.
On the basis of the technical scheme, the technical scheme of the application further comprises the following steps: and if the cache server does not receive any second coded data of the second device request target first device, sending a request for stopping sending the second coded data to the target first device. Wherein if the cache server does not receive any second encoded data from the second device requesting the target first device, indicating that the user does not want to view detailed pictures of any image frame temporarily, then a request to stop the first encoded data is sent to the target first device, and the target first device stops data transmission.
Therefore, the method and the device solve the problem that the video conference of more than hundred people on line in real time can not display images of all devices at the same time, greatly save the performance consumption of the GPU of the devices, and enable users corresponding to any device to see images of users corresponding to all other devices on a screen. When a user corresponding to one device needs to watch the image of the user corresponding to one other device in detail, or needs to watch the image of the current speaker, the mouse can be moved into the image frame of the corresponding user, or the image frame of the corresponding user is clicked by a finger on the mobile terminal, so that a smoother picture can be displayed on the image frame of the corresponding user. The system is simple to operate and strong in experience, so that time is greatly saved for users, and comfort is improved.
The embodiment of the present invention also provides a system, please refer to fig. 2, fig. 2 is a schematic structural diagram of a system for displaying images of a multi-person online video conference, as shown in fig. 2, the system includes: a processor 210, and a memory 220 coupled to the processor 210; the memory 220 is configured to store a computer program, where the computer program is configured to at least perform a method for displaying images of a multi-person online video conference in an embodiment of the present invention; the processor 210 is used to invoke and execute the computer program in memory; the method for displaying the images of the multi-person online video conference at least comprises the following steps: each first device performs a first encoding operation on the acquired image data, and sends the obtained first encoding data to a second device for rendering; the second device detects the image frame to acquire the focus operation, determines the first device corresponding to the image frame as the target first device, and sends a request for acquiring second coded data of the target first device to the cache server; if the cache server is receiving the second coded data of the target first device, the second device receives the second coded data forwarded by the cache server and sends a request for stopping sending the first coded data to the cache server; if the cache server does not receive the second coded data of the target first device, the cache server sends a second coded data request message to the target first device, the target first device carries out second coding on the acquired image data, the acquired second coded data is sent to the cache server, and the cache server forwards the second coded data to the second device; and the second device decodes the second encoded data and renders the decoded image data into an image frame corresponding to the target first device for display.
The embodiment of the invention also provides a storage medium, which stores a computer program, and when the computer program is executed by a processor, the method for displaying the images of the multi-person online video conference in the embodiment of the invention comprises the following steps: each first device performs a first encoding operation on the acquired image data, and sends the obtained first encoding data to a second device for rendering; the second device detects the image frame to acquire the focus operation, determines the first device corresponding to the image frame as the target first device, and sends a request for acquiring second coded data of the target first device to the cache server; if the cache server is receiving the second coded data of the target first device, the second device receives the second coded data forwarded by the cache server and sends a request for stopping sending the first coded data to the cache server; if the cache server does not receive the second coded data of the target first device, the cache server sends a second coded data request message to the target first device, the target first device carries out second coding on the acquired image data, the acquired second coded data is sent to the cache server, and the cache server forwards the second coded data to the second device; and the second device decodes the second encoded data and renders the decoded image data into an image frame corresponding to the target first device for display.
It should be noted that in the description of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "plurality" means at least two. Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
Those of ordinary skill in the art will appreciate that all or part of the steps carried out in the method of the above-described embodiments may be implemented by a program to instruct related hardware, and the program may be stored in a computer readable storage medium, where the program when executed includes one or a combination of the steps of the method embodiments.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented as software functional modules and sold or used as a stand-alone product.
The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, or the like.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (10)
1. A method for displaying images of a multi-person online video conference, comprising:
each first device performs a first encoding operation on the acquired image data, and sends the obtained first encoding data to the second device for rendering through the cache server;
the second device detects an image frame to acquire focus operation, determines a first device corresponding to the image frame as a target first device, and sends a request for acquiring second coded data of the target first device to a cache server;
if the cache server is receiving the second coded data of the target first device, the second device receives the second coded data forwarded by the cache server and sends a request for stopping sending the first coded data to the cache server;
if the cache server does not receive the second encoded data of the target first device, the cache server sends a second encoded data request message to the target first device, the target first device performs second encoding on the acquired image data and sends the obtained second encoded data to the cache server, and the cache server forwards the second encoded data to the second device;
and the second device decodes the second encoded data and renders the decoded image data to an image frame corresponding to the target first device for display.
2. The method of claim 1, wherein each first device performs a first encoding operation on the acquired image data, and sends the obtained first encoded data to the second device via the cache server for rendering, and wherein the method comprises:
each first device collects image data and respectively performs initial coding on the image data to obtain first coded data;
each first device respectively sends the first coded data to a cache server through a set transmission protocol;
the cache server forwards the first encoded data to a second device;
the second device renders the first encoded data.
3. The method of claim 1, wherein the initially encoding the image data comprises:
and extracting the image data of the set frame number in the set time to perform initial coding.
4. The method as recited in claim 1, further comprising:
and if the cache server receives the request of stopping sending the first coded data and/or the second coded data from the target first equipment, stopping sending the data.
5. The method as recited in claim 1, further comprising:
and if the second device detects that the image frame of the target first device loses focus, sending a request for stopping the target first device from sending the second coded data and a request for continuing to send the first coded data to the cache server.
6. The method as recited in claim 1, further comprising:
and if the cache server does not receive any second coded data requested by the second device, sending a request for stopping sending the second coded data to the target first device.
7. The method of claim 2, wherein the step of determining the position of the substrate comprises,
the first encoded data is JPEG encoded data; the second encoded data is H264 encoded data; the set transport protocol is RTP protocol.
8. The method of claim 1, wherein the image data is color space format data, the color space format data being YUV data.
9. A system for multi-person online video conferencing image display, comprising:
a processor, and a memory coupled to the processor;
the memory is used for storing a computer program at least for executing the method for displaying the images of the multi-person online video conference according to any one of claims 1 to 8;
the processor is configured to invoke and execute the computer program in the memory.
10. A storage medium storing a computer program which, when executed by a processor, performs the steps of the method of multi-person online videoconference image display of any of claims 1-8.
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| JP2001045495A (en) * | 1999-08-02 | 2001-02-16 | Nec Eng Ltd | Image compositing device |
| KR20100135076A (en) * | 2009-06-16 | 2010-12-24 | 에스케이 텔레콤주식회사 | Multi-point conferencing system and method thereof |
| CN107613242A (en) * | 2017-09-12 | 2018-01-19 | 宇龙计算机通信科技(深圳)有限公司 | Video conference processing method and terminal, server |
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| AU2015200410A1 (en) * | 2015-01-28 | 2016-08-11 | Context Systems Llp | Online collaboration systems and methods |
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| JP2001045495A (en) * | 1999-08-02 | 2001-02-16 | Nec Eng Ltd | Image compositing device |
| KR20100135076A (en) * | 2009-06-16 | 2010-12-24 | 에스케이 텔레콤주식회사 | Multi-point conferencing system and method thereof |
| CN107613242A (en) * | 2017-09-12 | 2018-01-19 | 宇龙计算机通信科技(深圳)有限公司 | Video conference processing method and terminal, server |
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