CN101431673A - Video communication system and method - Google Patents
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Abstract
The invention relates to a computer graphics technical field which provides a video communication system and a method thereof. The system is used for realizing video transmission between a first terminal and a second terminal, the first terminal includes a video encoding module and a data transmission module, the second terminal includes a data transmission module and a video encoding module, the first terminal also includes a control response module connected with the video encoding module and the data transmission module respectively, the first terminal obtains an adjusting parameter transmitted by the second terminal and informs the video encoding module encoding to the video image according with the adjusting parameter; the second terminal also includes an adjustable module for capturing user's operation, and transmits the adjustable parameter corresponding to the user's operation to the first terminal. The invention can increase flexibility of adjusting video image for user, therefore, user's individual requirement can be satisfied fully.
Description
Technical field
The present invention relates to the computer graphics techniques field, more particularly, relate to a kind of video communication system and method.
Background technology
Along with popularizing and the lifting of the network bandwidth of instant messaging, increasing user uses the network instant communication instrument to exchange.JICQ provides multiple exchange way, for example text chat, voice-enabled chat, Video chat etc.Video chat (being video communication) is gathered user's image and surrounding enviroment in real time by the camera that connects computer, communicating pair can be seen each other image strengthened the effect of linking up.
The detailed process of video communication is: video sends terminal and gathers video image, after encoding with the encoding video pictures transfer of data to the video reception terminal, the video reception terminal is decoded to the video image coding code data and is shown.Yet because the restriction of the network bandwidth and network quality at present, the definition of the video image by Network Transmission and fluency are difficult to the degree that reaches desirable simultaneously, and the quality that in most of the cases needs to sacrifice some aspects guarantees quality on the other hand.Simultaneously, owing to different user requirement difference to video definition and fluency under different scenes, therefore need regulate the definition and the fluency of video.
The method that prior art is regulated video quality is: the user of video reception terminal is by different options, for example, the selection quality is preferential or speed is preferential, video sends the preferential or preferential regulating command of speed of terminal response quality, code change parameter according to prior setting is carried out recompile to video image, and encoded image data is reached the video reception terminal shows.Yet because the mode that prior art is regulated video image is single, the flexibility of adjusting is relatively poor, therefore can't satisfy user's individual demand.
Therefore need a kind of new video communication system and method, can improve the flexibility of video image being carried out quality adjustment, thereby fully satisfy user's individual demand.
Summary of the invention
The invention provides a kind of video communication system and method, it is not strong to the flexibility that video image carries out quality adjustment to be intended to solve prior art, so that can't satisfy the problem of users ' individualized requirement.
In order to realize goal of the invention, described video communication system is used to realize the video transmission between first terminal and second terminal, described first terminal comprises carries out the video encoding module of code conversion and with the data transmission module of encoding video pictures transfer of data to the second terminal, described second terminal comprises the data transmission module of receiver, video image coded data to video image.
Described second terminal also comprises adjustment module, catches user's operation, described user is operated corresponding adjusting parameter be sent to described first terminal;
Described first terminal also comprises the control response module that links to each other with the video encoding module of described first terminal respectively, obtain the adjusting parameter that described second terminal sends, and notify described video encoding module according to the coding of described adjusting parameter adjustment to video image.
Preferably, described first terminal also can comprise:
Adjustment module is used to catch user's operation of described first terminal, described user is operated corresponding adjusting parameter be sent to described second terminal;
The video decode module links to each other with the data transmission module of described first terminal, to the video image coding code data that the receives conversion of decoding;
Video display module links to each other with the video decode module of described first terminal, shows decoded video image.
Described second terminal also can comprise:
Video encoding module, the video image that collects with described second terminal carries out code conversion;
The control response module links to each other with the video encoding module of described second terminal, obtains the adjusting parameter that described first terminal sends, and the video encoding module of notifying described second terminal is according to the coding of described adjusting parameter adjustment to video image.
Described adjusting parameter comprises quantization parameter and frame per second, and described quantization parameter and frame per second be the definition and the fluency of corresponding control of video image respectively.
Described user's operation can comprise operating user interface and file input.
Described method said method comprising the steps of based on the video transmission between first terminal and second terminal:
A. described second capture terminal user operation is operated corresponding adjusting parameter with described user and is sent to described first terminal;
B. described first terminal is obtained the adjusting parameter that described first terminal sends, and according to the coding of described adjusting parameter adjustment to video image;
C. the encoding video pictures transfer of data after described first terminal will be encoded to described second terminal is decoded and is shown.
Preferably, described method also can comprise step:
D. described first capture terminal user operation is operated corresponding adjusting parameter with described user and is sent to described second terminal;
E. described second terminal is obtained the adjusting parameter that described first terminal sends, according to the coding of described adjusting parameter adjustment to video image;
F. the encoding video pictures transfer of data after described second terminal will be encoded to described first terminal is decoded and is shown.
Described adjusting parameter can comprise quantization parameter and frame per second, and described quantization parameter and frame per second be the definition and the fluency of corresponding control of video image respectively.
As from the foregoing, video communication system provided by the invention and method, the user can be regulated pairing adjusting parameter in terminal and send to another terminal, another terminal is carried out recompile according to regulating parameter to the video image that collects, to make things convenient for the user definition and the fluency of video image to be regulated in a big way at one, improved the flexibility of video image being carried out quality adjustment, satisfied the requirement of user to greatest extent, thereby fully satisfied user's individual demand video image clarity and fluency.
Description of drawings
Fig. 1 is the structural representation of video communication system among one of them embodiment of the present invention;
Fig. 2 is the structural representation of video communication system among one of them embodiment of the present invention;
Fig. 3 is the flow chart of video communication method among one of them embodiment of the present invention;
Fig. 4 is the flow chart of video communication method among one of them embodiment of the present invention.
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.
Embodiment
In the present invention, catch user's operation by the adjustment module in second terminal, the user is operated corresponding adjusting parameter be sent to first terminal, described first terminal is obtained the adjusting parameter that second terminal sends, and the notice video encoding module is according to the coding of described adjusting parameter adjustment to video image, and the video image coding code data behind the coding transfers to second terminal again and decodes and show.Like this, improve the flexibility of video and graphic being carried out quality adjustment, thereby fully satisfied user's individual demand.
Fig. 1 shows the system configuration of video communication system in one embodiment of the present of invention, second terminal 200 that this system comprises first terminal 100, carries out video transmission by network with first terminal 100.
Should be noted that the annexation between each equipment is the needs of explaining its information interaction and control procedure for clear in all diagrams of the present invention, therefore should be considered as annexation in logic, and should not only limit to physical connection.
In addition, need to prove that the communication mode between each functional module can be taked multiple, protection scope of the present invention should not be defined as the communication mode of certain particular type.Wherein:
Should be noted that, among this embodiment, first terminal 100 and second terminal 200 be respectively as the transmission terminal and the receiving terminal of video image, and its typical case can be but be not limited to the client of the special-purpose instant messenger of installation and operation, also can be the web browser of operation web chat tool.
In addition, the transmission of video images between first terminal 100 and second terminal 200 can be two-way.Promptly first terminal 100 both can be used as the transmission terminal of video image, also can be used as the receiving terminal of video image; Second terminal 200 both can be used as the receiving terminal of video image, also can be used as the transmission terminal of video image.
In one embodiment, first terminal 100 and second terminal 200 are carried out video communication.In first terminal 100 video capture device (for example camera) that inserts computer is housed, collects video image by video acquisition module 104, this video image comprises user's image and surrounding environment.102 pairs of vedio datas that collect of video encoding module carry out code conversion, and the redundant information (comprising spatial domain redundant information and time domain redundant information) that is about in the vedio data is removed.Going the spatial domain redundant information can use intraframe coding technology and entropy coding, go the time domain redundant information can use inter-frame coding, is prior art about video coding technique, does not repeat them here.
Video image coding code data after encoding is sent to second terminal 200 by data transmission module 101, the data transmission module 201 of second terminal 200 receives these data, the video image coding code data that 202 pairs of video decode modules the receive conversion of decoding, final video display module 203 display video images.
In one embodiment, the user of second terminal 200 can regulate the video image that receives by modes such as interface operation or file inputs.In one embodiment, operating user interface can be pull bar, option etc., and the file input can realize by the configuration file of change terminal.
When utilizing pull bar to regulate, the two ends, the left and right sides of pull bar can be represented maximum definition and maximum fluency respectively, the corresponding different coding parameter of the residing diverse location of pull bar.When the user stirs pull bar left, then increase the quantization parameter of coding, reduce the video image number (being frame per second) of transmission in the unit interval, the control of video image becomes more clear; Otherwise, when the user stirs pull bar to the right, then reduce the quantization parameter of encoding, increase frame per second, the control of video image becomes more smooth.
In one embodiment, suppose that current network bandwidth is 200Kbps, the user wishes that promptly the network bandwidth satisfies the definition requirement to greatest extent, can toggle it to high order end with pull bar if need definition to greatest extent.In a preferred embodiment, its corresponding every frame 200Kb coding, per second is only compiled the coding parameter of 1 frame.If the user needs fluency to greatest extent, wish that promptly the network bandwidth satisfies the fluency requirement to greatest extent, can toggle it to low order end with pull bar.In a preferred embodiment, its can corresponding every frame average 20Kb coding, per second coding parameter of 10 frames of encoding.
Fig. 2 shows the system configuration of video communication system in one embodiment of the present of invention, and this embodiment has described first terminal 100 and carried out the situation that two-way video is communicated by letter with second terminal 200.Wherein:
In one embodiment, first terminal 100 and second terminal 200 are carried out video communication, in first terminal 100 and second terminal 200 video capture device (for example camera) that inserts computer is housed all, collect video image by the video acquisition module 104 of first terminal 100 and the video acquisition module 207 of second terminal 200, then the video communication both sides of first terminal 100 and second terminal 200 can see the other side's image and surrounding environment etc.
The user of first terminal 100 and second terminal 200 can regulate the video image that receives.In one embodiment, the user of first terminal 100 can regulate the video image that receives by modes such as operating user interface or file inputs.Operating user interface can be pull bar, option etc., and the file input can realize by the configuration file of change terminal.
The adjustment module 107 of first terminal 100 captures user's operation (for example being the operation of stirring of a pull bar), (for example get access to the adjusting parameter according to user's operation, stir pull bar to the adjusted parameter of diverse location according to the user), and the adjusting parameter of correspondence is sent to second terminal 200.The data transmission module 201 of second terminal 200 receives regulates parameter, and will regulate parameter and give control response module 206, control response module 206 notice video encoding module 205 are carried out recompile according to described adjusting parameter (being new coding parameter), video image coding code data after 201 of data transmission modules will be encoded is sent to first terminal 100, by the conversion of decoding of the video decode module 105 of first terminal 100, video display module 106 shows decoded video image.
In another embodiment, the user of second terminal 200 can regulate the video image that receives by modes such as operating user interface or file inputs.Its process does not repeat them here with embodiment illustrated in fig. 1 identical.
Fig. 3 shows the flow process of video communication method in one embodiment of the present of invention, and this method flow is based on system configuration shown in Figure 1, and detailed process is as follows:
In step S301, second terminal 200 is caught user's operation, the user is operated corresponding adjusting parameter be sent to first terminal 100.
In step S302, first terminal 100 is obtained the adjusting parameter that second terminal sends, and according to the coding of described adjusting parameter adjustment to video image.
In step S303, encoding video pictures transfer of data to the second terminal 200 after first terminal 100 will be encoded is decoded and is shown.
In one embodiment, first terminal 100 and second terminal 200 are carried out video communication.The video capture device (for example camera) that inserts computer is housed in first terminal 100, video acquisition module 104 by first terminal 100 collects video image, this video image comprises the user image and the surrounding environment of first terminal 100,102 pairs of vedio datas that collect of video encoding module carry out code conversion, and the redundant information (comprising spatial domain redundant information and time domain redundant information) that is about in the vedio data is removed.Going the spatial domain redundant information can use intraframe coding technology and entropy coding, go the time domain redundant information can use inter-frame coding, is prior art about video coding technique, does not repeat them here.
Video image coding code data after encoding is sent to second terminal 200 by data transmission module 101, the data transmission module 201 of second terminal 200 receives these data, the video image coding code data that 202 pairs of video decode modules the receive conversion of decoding, 203 display video images of video display module.
In one embodiment, the user of second terminal 200 can regulate the video image that receives by modes such as operating user interface or file inputs.In one embodiment, operating user interface can be pull bar, option etc., and the file input can realize by the configuration file of change terminal.
When utilizing pull bar to regulate, the two ends, the left and right sides of pull bar can be represented maximum definition and maximum fluency respectively, the corresponding different coding parameter of the residing diverse location of pull bar.When the user stirs pull bar left, then increase the quantization parameter of coding, reduce the video image number (being frame per second) of transmission in the unit interval, the control of video image becomes more clear; Otherwise, when the user stirs pull bar to the right, then reduce the quantization parameter of encoding, increase frame per second, the control of video image becomes more smooth.
In one embodiment, suppose that current network bandwidth is 200Kbps, the user wishes that promptly the network bandwidth satisfies the definition requirement to greatest extent, can toggle it to high order end with pull bar if need definition to greatest extent.In a preferred embodiment, its corresponding every frame 200Kb coding, per second is only compiled the coding parameter of 1 frame.If the user needs fluency to greatest extent, wish that promptly the network bandwidth satisfies the fluency requirement to greatest extent, can toggle it to low order end with pull bar.In a preferred embodiment, its can corresponding every frame average 20Kb coding, per second coding parameter of 10 frames of encoding.
Fig. 4 shows the flow process of video communication method in one embodiment of the present of invention, and this method flow is based on system configuration shown in Figure 2.Among this embodiment, first terminal 100 is carried out two-way video with second terminal 200 and is communicated by letter, in first terminal 100 and second terminal 200 video capture device (for example camera) that inserts computer is housed all, the user of first terminal 100 and second terminal 200 can carry out quality adjustment to the video image that receives.
In one embodiment, the user of first terminal 100 carries out quality adjustment to the video image that receives.Detailed process is as follows:
In step S401, first terminal 100 is caught user's operation, the user is operated corresponding adjusting parameter be sent to second terminal 200.In one embodiment, the user of first terminal 100 can regulate the video image that receives by modes such as operating user interface or file inputs.Adjustment module 107 captures user's operation (for example being the operation of stirring of a pull bar), (for example get access to the adjusting parameter according to user's operation, stir pull bar to the adjusted parameter of diverse location according to the user), and the user is operated corresponding adjusting parameter be sent to second terminal 200.
In step S402, second terminal 200 is obtained the adjusting parameter that first terminal 100 is sent, and according to the coding of described adjusting parameter adjustment to video image.In one embodiment, the data transmission module 201 of second terminal 200 receives regulates parameter, and will regulate parameter and give control response module 206, control response module 206 notice video encoding module 205 are carried out recompile according to described adjusting parameter (being new coding parameter).
In step S403, encoding video pictures transfer of data to the first terminal 100 after second terminal 200 will be encoded is decoded and is shown.In one embodiment, the data transmission module 201 of second terminal 200 is sent to first terminal 100 with the video image coding code data behind the recompile, the data transmission module 101 of first terminal 100 receives this video image coding code data, and the conversion of decoding of the video decode module 105 of transferring to first terminal 100, video display module 105 shows decoded video image.
In another embodiment, the user of second terminal 200 also can regulate the video image that receives.Its method flow does not repeat them here with embodiment illustrated in fig. 3 identical.
Should be noted that typical application of the present invention but be not limited to video communication in the JICQ, also can use method set forth in the present invention in the video communication of on other similar web webpages, carrying out.When carrying out video communication on the web webpage, described first terminal 100 and second terminal 200 can be the web browsers, carry out data interaction by the web server.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1, a kind of video communication system, be used to realize the video transmission between first terminal and second terminal, described first terminal comprises carries out the video encoding module of code conversion and with the data transmission module of encoding video pictures transfer of data to the second terminal to video image, described second terminal comprises the data transmission module of receiver, video image coded data, it is characterized in that
Described second terminal also comprises adjustment module, catches user's operation, described user is operated corresponding adjusting parameter be sent to described first terminal;
Described first terminal also comprises the control response module that links to each other with described video encoding module, described control response module is obtained the described adjusting parameter that described second terminal sends, and notifies described video encoding module according to the coding of described adjusting parameter adjustment to video image.
2, video communication system according to claim 1 is characterized in that, described first terminal also comprises:
Adjustment module, the user who catches described first terminal operates, and described user is operated corresponding adjusting parameter be sent to described second terminal;
The video decode module links to each other with the data transmission module of described first terminal, to the video image coding code data that the receives conversion of decoding;
Video display module links to each other with the video decode module of described first terminal, shows decoded video image.
3, video communication system according to claim 2 is characterized in that, described second terminal also comprises:
Video acquisition module is gathered video image;
Video encoding module links to each other with described video acquisition module, and the video image that collects is carried out code conversion;
The control response module links to each other with the video encoding module of described second terminal, obtains the adjusting parameter that described first terminal sends, and the video encoding module of notifying described second terminal is according to the coding of described adjusting parameter adjustment to video image.
4, video communication system according to claim 1 and 2 is characterized in that, described adjusting parameter comprises quantization parameter and frame per second, and described quantization parameter and frame per second be the definition and the fluency of corresponding control of video image respectively.
5, video communication system according to claim 1 and 2 is characterized in that, described user's operation comprises operating user interface and/or file input.
6, a kind of video communication method, described method is characterized in that based on the video transmission between first terminal and second terminal, said method comprising the steps of:
A. described second capture terminal user operation is operated corresponding adjusting parameter with described user and is sent to described first terminal;
B. described first terminal is obtained the adjusting parameter that described second terminal sends, and according to the coding of described adjusting parameter adjustment to video image;
C. the encoding video pictures transfer of data after described first terminal will be encoded to described second terminal is decoded and is shown.
7, video communication method according to claim 6 is characterized in that, described method also comprises step:
D. described first capture terminal user operation is operated corresponding adjusting parameter with described user and is sent to described second terminal;
E. described second terminal is obtained the adjusting parameter that described first terminal sends, according to the coding of described adjusting parameter adjustment to video image;
F. the encoding video pictures transfer of data after described second terminal will be encoded to described first terminal is decoded and is shown.
According to claim 6 or 7 described video communication methods, it is characterized in that 8, described adjusting parameter comprises quantization parameter and frame per second.
According to claim 6 or 7 described video communication methods, it is characterized in that 9, described user's operation comprises operating user interface and/or file input.
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| CN102377730A (en) * | 2010-08-11 | 2012-03-14 | 中国电信股份有限公司 | Audio/video signal processing method and mobile terminal |
| CN103036849A (en) * | 2011-09-30 | 2013-04-10 | 深圳市汇川控制技术有限公司 | Intelligence equipment communication system and method of Internet of things |
| CN103096011A (en) * | 2011-11-08 | 2013-05-08 | 中国电信股份有限公司 | Method and system of video communication negotiation and video terminal |
| CN103442202A (en) * | 2013-08-22 | 2013-12-11 | 北京智谷睿拓技术服务有限公司 | Video communication method and device |
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| CN102377730A (en) * | 2010-08-11 | 2012-03-14 | 中国电信股份有限公司 | Audio/video signal processing method and mobile terminal |
| CN103036849A (en) * | 2011-09-30 | 2013-04-10 | 深圳市汇川控制技术有限公司 | Intelligence equipment communication system and method of Internet of things |
| CN103096011A (en) * | 2011-11-08 | 2013-05-08 | 中国电信股份有限公司 | Method and system of video communication negotiation and video terminal |
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| CN103442202B (en) * | 2013-08-22 | 2017-09-26 | 北京智谷睿拓技术服务有限公司 | Video communication method and device |
| CN103442202A (en) * | 2013-08-22 | 2013-12-11 | 北京智谷睿拓技术服务有限公司 | Video communication method and device |
| CN109213457A (en) * | 2014-03-14 | 2019-01-15 | 佳能株式会社 | Information processing equipment and the method for controlling information processing equipment |
| CN109213457B (en) * | 2014-03-14 | 2021-10-22 | 佳能株式会社 | Information processing apparatus and method of controlling information processing apparatus |
| CN105472296A (en) * | 2014-09-09 | 2016-04-06 | 联想(北京)有限公司 | Real-time performance verification method and device |
| CN105472296B (en) * | 2014-09-09 | 2019-02-05 | 联想(北京)有限公司 | Real-time method of calibration and device |
| CN105657422A (en) * | 2016-01-21 | 2016-06-08 | 航天恒星科技有限公司 | Multi-scene image compression processing method and system |
| CN108229391A (en) * | 2018-01-02 | 2018-06-29 | 京东方科技集团股份有限公司 | Gesture identifying device and its server, gesture recognition system, gesture identification method |
| US10725553B2 (en) | 2018-01-02 | 2020-07-28 | Boe Technology Group Co., Ltd. | Gesture recognition device, gesture recognition method, and gesture recognition system |
| WO2019184606A1 (en) * | 2018-03-27 | 2019-10-03 | 华为技术有限公司 | Smart video processing apparatus |
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