CN101860715A - Multi-picture synthesis method and system and media processing device - Google Patents
Multi-picture synthesis method and system and media processing device Download PDFInfo
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- CN101860715A CN101860715A CN201010180447A CN201010180447A CN101860715A CN 101860715 A CN101860715 A CN 101860715A CN 201010180447 A CN201010180447 A CN 201010180447A CN 201010180447 A CN201010180447 A CN 201010180447A CN 101860715 A CN101860715 A CN 101860715A
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Abstract
The invention discloses multi-picture synthesis method and system and a media processing device, which are applied to video conference systems. The multi-picture synthesis method comprises the following steps of: acquiring multiple paths of media code streams, wherein each path of media code stream is used for displaying one picture of a scene; synthesizing multiple paths of media code streams into a multi-picture group according to layout, wherein the size of at least one picture in the layout is equal to the actual size of the displayed scene. According to the technical scheme provided by the invention, the actual size of the picture-displaying scene can be kept while multiple conference place information is synthesized as much as possible, which effectively improves the presence experiences of users.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of multi-picture synthesis method, system and media processor.
Background technology
The appearance of video conferencing technology and development have changed human social activities mode gradually, and video communication also becomes an indispensable part in human social economy's life.Traditional means of communication is as the communication effectiveness that phone, facsimile machine etc. all can't reach face-to-face or the group flocks together.Concerning enterprises and institutions, the meeting of going on business, become vexing, the thing of hanging back.Adopt the mode of video conferencing both to reach the purpose of holding a meeting, avoided the other places of going on business again.
Video conferencing system mainly comprises multipoint control unit (Multipoint Control Unit, abbreviate MCU as) and terminal system, wherein, MCU is the key equipment of multi-spot video conference system, it is from the information flow from each meeting field point, extract audio frequency, video, information and signalings such as data, again with the information and the signaling of each meeting field point, send into multiple spot control module and medium process module respectively, finish corresponding audio mix or switching, video mix or switching, data broadcasting and Route Selection, processes such as timing and meeting control, at last that each meeting field point is required various information reconfigure, and are sent to each relevant terminal system equipment.Terminal system is divided into Table top type conference terminal and meeting room type conference terminal two big classes.Characteristics such as Table top type conference terminal cost is low, easy to use, small-scale meeting is used and is held in suitable individual office.Boardroom system/group system is equipped with external accessories such as high-quality zoom lens, high-fidelity music center, large-screen color TV or projection, add the pre-treatment/preprocessor of video, make that the picture image quality is more clear, reach better effect of meeting, be fit to hold fairly large meeting.Conference room terminal is applicable to meeting room, several to dozens of participants' environment.Broadcast terminal is unidirectional receiving terminal, and it can receive the image and the sound of meeting, but can not send image and sound.Broadcast terminal only needing can be used for the occasion of unidirectional delivery information, and for example the higher level is to occasions such as subordinate's reception and registration policies.Portable terminal is on the basis of desktop terminal, mixes wireless access card and wireless launcher, can move to add meeting in the scope of a given area.Conference terminal is configured in local meeting field point and each the sub-venue point in the video conference.
In traditional video conferencing, by the close fit of MCU and terminal system, output when realizing many pictures with split screen mode.Symmetrical split screen from 4,9,16 shows that from 16: 9 widescreens such as picture-in-pictures to 6 such as 1+1,1+2,2+4 multiple different split screen compound mode satisfies user's display requirement arbitrarily to asymmetric split screens such as 1+5,1+7,3+4,2+8,1+12.
Below in conjunction with Fig. 1 many picture layout that traditional video conferencing shows are described.This layout is 9 pictures, and each picture size is identical, is 1/9 of whole image size.The tradition meeting-place does not require the original appearance size, and more expectation can be seen more meeting field information.3 little pictures of 9 every rows of picture can show a multithread meeting-place, and 9 pictures can show 3 multithread meeting-place.
Hence one can see that, though the user can see meeting-place as much as possible, and, the picture that the user watches can't keep the original appearance size of its displayed scene, also be difficult to effectively carry out the expression in the eyes interchange, has therefore reduced user's telepresenc and has experienced.
Summary of the invention
At can't also keeping the problem of the original appearance size of scene when synthetic a plurality of scene as much as possible in the correlation technique, main purpose of the present invention is to provide a kind of multi-picture synthesis method, system and media processor, one of to address the above problem at least.
According to an aspect of the present invention, provide a kind of multi-picture synthesis method.
According to multi-picture synthesis method of the present invention, be applied to video conferencing system, this method comprises: obtain the multi-path media code stream, wherein, every road medium code stream is used for a picture of displayed scene; According to layout the multi-path media code stream is synthesized picture more than a group, wherein, the size of at least one picture in the layout equals the actual size of shown scene.
According to a further aspect in the invention, provide a kind of many pictures synthesis system.
Many pictures synthesis system according to the present invention comprises: access module, be used to obtain the multi-path media code stream, and wherein, every road medium code stream is used for a picture of displayed scene; Medium process module is used for according to layout the multi-path media code stream being synthesized picture more than a group, and wherein, the size of at least one picture in the layout equals the actual size of shown scene.
According to another aspect of the invention, provide a kind of media processor.
Media processor according to the present invention comprises: receiver module, be used to receive the multi-path media code stream, and wherein, every road medium code stream is used for a picture of displayed scene; Processing module is used for according to layout the multi-path media code stream that receives being synthesized picture more than a group, and wherein, the size of at least one picture in the layout equals the actual size of shown scene.Output module is used for the output of picture more than a group after synthetic.
By the present invention, according to predetermined layout the multi-path media code stream is synthesized picture more than a group, wherein, the size of at least one picture in this layout equals the actual size of shown scene, solved in the correlation technique and can't when synthesizing a plurality of scene as much as possible, also keep the problem of the original appearance size of scene, and then can be outside synthesizing a plurality of meeting field information as much as possible, the actual size that can also keep the picture displayed scene has effectively improved user's telepresenc and has experienced.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is many picture layout that traditional video conferencing shows;
Fig. 2 is the structural representation of video conferencing system;
Fig. 3 is the flow chart according to the multi-picture synthesis method of the embodiment of the invention;
Fig. 4 is the schematic diagram according to many picture layout of the preferred embodiment of the present invention one;
Fig. 5 is the schematic diagram according to many picture layout of the preferred embodiment of the present invention two;
Fig. 6 is the schematic diagram according to the picture layout more than many groups of the preferred embodiment of the present invention three;
Fig. 7 is the flow chart of multi-picture synthesis method according to the preferred embodiment of the invention;
Fig. 8 is the structured flowchart according to many pictures synthesis system of the embodiment of the invention;
Fig. 9 is the structured flowchart of many pictures synthesis system according to the preferred embodiment of the invention;
Figure 10 is the structured flowchart of media processor according to the preferred embodiment of the invention.
Embodiment
Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
Fig. 2 is the structural representation of video conferencing system.As shown in Figure 2, this video conferencing system comprises: list, multiple video strems meeting-place and multipoint control unit (Multipoint ControlUnit abbreviates MCU as) 13.Wherein, 111,112,113 are the multithread meeting-place, and 121,122,123 is the single current meeting-place.Wherein, 111 meeting-place are the broadcast source meeting-place, and 111 meeting-place are all seen in other meeting-place; 111 meeting-place of seeing are 113 meeting-place.The road code stream of seeing multithread in 111 meeting-place can only be selected in single current meeting-place 121,122,123, has the incomplete defective of information, therefore needs medium process module that the multichannel code stream is synthesized one road code stream.Though 111 meeting-place are multithread meeting-place, also can only see a multithread meeting-place, also need medium process module synthetic one road code stream of other meeting-place code streams.
In above-mentioned video conferencing system, if the user need see a plurality of meeting field information as much as possible, can also see the actual size of the meeting-place scene that picture shows, then need to provide a kind of new multi-picture synthesis method, be described below in conjunction with Fig. 3.
Fig. 3 is the flow chart according to the multi-picture synthesis method of the embodiment of the invention.As shown in Figure 3, this multi-picture synthesis method comprises following processing:
Step S302: obtain the multi-path media code stream, wherein, every road medium code stream is used for a picture of displayed scene;
Step S304: according to layout the multi-path media code stream is synthesized picture more than a group, wherein, the size of at least one picture in the layout equals the actual size of shown scene.
Adopt said method, because the size of at least one picture in the above-mentioned layout equals the actual size of shown scene, the picture that the user watches can keep the original appearance size of its displayed scene, also can effectively carry out the expression in the eyes interchange, has therefore improved user's telepresenc and has experienced.
Preferably, at least one little picture can also be arranged in above-mentioned many pictures, wherein, the size of each little picture is less than the actual size of shown scene.
Below in conjunction with Fig. 4 and Fig. 5 above-mentioned preferred implementation process is described.
Fig. 4 is the schematic diagram according to many picture layout of the preferred embodiment of the present invention one; As shown in Figure 4, this layout is formed by 4 picture compositions, and wherein 414 correspondences are big pictures, and in the middle of its bottom stack 411,412,413 16: 9 little pictures of totally 3 length-width ratios, the area of little picture big picture 1/36 to 1/16 between.411,412,413 source of media are from same multithread meeting-place or a plurality of single currents meeting-place.As seen, 414 have kept the original appearance size, do not influence expression in the eyes and exchange, and 411,412,413 can see the image information in other meeting-place again.
Fig. 5 is the schematic diagram according to many picture layout of the preferred embodiment of the present invention two; As shown in Figure 5, the difference of this layout and Fig. 4 is that mainly little picture is superimposed upon crown center.The same with Fig. 4, big picture 52 has kept the original appearance size, does not influence expression in the eyes and exchanges, and 511,512,513 can see the image information in other meeting-place again.
Preferably, according to conference status, can dynamically determine to need synthetic many pictures group number, picture more than every group is with a screen display.
In preferred implementation process, in the many pictures of above-mentioned many groups, also can adopt traditional many picture layout, specifically can be referring to Fig. 1.Below in conjunction with Fig. 6 above-mentioned preferred implementation process is described.
Fig. 6 is the schematic diagram according to the picture layout more than many groups of the preferred embodiment of the present invention three; Present embodiment is an example with Fig. 2, provides the different image informations of many pictures after synthetic of can the place seeing.611 are seen the code stream schematic diagram by 111 left side screens, and its image is respectively from 113 left seats and 121,122,123 meeting-place.612 are seen the code stream schematic diagram by screen in 111, and its image is understood field picture from seat and 112 in 113 respectively.613 are seen the code stream schematic diagram by 111 right screens, and its image is from 113 right seat images.As seen see the big picture image information in meeting-place from 113 for 111, its size keeps the original appearance size, and 112,121,122,123 meeting field picture have in addition superposeed.621,622,623 are 113 picture information with the aid of pictures, and its big image media source is 111 meeting-place, and synthesize many pictures stack 112 meeting field information on 622, and therefore 113 can see 111 and 112 meeting-place videos simultaneously.63 is 9 picture images that 121,122,123 single currents meeting place is seen, its media code flow point is not from 111,112,113 3 meeting-place.
Preferably, this method can also comprise following processing: according to conference status, determine the current layout of change in meeting; Layout according to after the change synthesizes picture more than a group with the multi-path media code stream.
Preferably, this method can also comprise following processing: according to conference status, determine change code stream source in meeting; Obtain new multi-path media code stream from new code stream source; According to layout new multi-path media code stream is synthesized picture more than a group.
Below in conjunction with Fig. 7 above-mentioned preferred implementation process is described.
Fig. 7 is the flow chart of multi-picture synthesis method according to the preferred embodiment of the invention.As shown in Figure 7, this multi-picture synthesis method comprises following processing:
Step S702: hold in the process in meeting, decide synthetic picture more than several groups according to MCU image synthesis capability and participant terminal characteristics, which kind of layout picture more than every group adopts.
Wherein, MCU image synthesis capability refers to can synthesize for what many pictures, also comprises transcoding ability between the different agreement different rates.When limited in one's ability, guarantee that at first many pictures of Chair site are synthetic.The layout that many pictures adopt can be selected Fig. 1, Fig. 4, layout shown in Figure 5 according to actual conditions.Fig. 1 layout is generally adopted in common meeting-place, nets true meeting-place and generally adopts Fig. 4 or Fig. 5 layout.In addition, layout and frame numbers can also dynamically be adjusted in meeting.
Step S704: in the meeting according to conference status change at any time many pictures by which terminal code stream synthetic (be equivalent to above-mentioned in meeting according to conference status, determine change code stream source).Broadcast source may take place in the meeting change, the medium code stream that then picture synthesized more than every group will change thereupon.Big picture and selecting broadcast source meeting-place code stream or broadcast source are seen the meeting-place code stream in Fig. 4, Fig. 5 layout, and other meeting-place code streams of little picture and selecting are also filled in order.The medium code stream can be specified by the user in Fig. 1 layout, perhaps shows a plurality of meeting-place that speech is arranged recently.
Step S706: select different media code flow transmission to give this meeting-place according to each meeting-place characteristic.The scene in other meeting-place can directly be seen by the multichannel code stream in this meeting-place, and perhaps the many pictures of other meeting-place after synthetic specifically can be decided according to actual conditions.
In preferred implementation process, below can adjusting in real time one of at least: many pictures group number, the layout of many pictures, source of media.Particularly, system can dynamically adjust according to predetermined configurations, and the adjustment instruction that also can respond the user is dynamically adjusted.
Fig. 8 is the structured flowchart according to many pictures synthesis system of the embodiment of the invention.As shown in Figure 8, this many pictures synthesis system is applied to video conferencing system, comprising: access module 80, medium process module 82.
Adopt said system, because the size of at least one picture in the above-mentioned layout equals the actual size of shown scene, the picture that the user watches can keep the original appearance size of its displayed scene, also can effectively carry out the expression in the eyes interchange, has therefore improved user's telepresenc and has experienced.
Preferably, above-mentioned access module 80 also is used for exporting the picture more than a group after the medium process module processing to terminal.
Preferably, as shown in Figure 9, if it is a plurality of that access module and medium process module are, then system can also comprise: exchange of media module 84, the medium process module of this access module correspondence is sent in the media code circulation that is used for that access module is obtained, and the many pictures after medium process module is handled export the access module of this medium process module correspondence to.
It should be noted that the preferred implementation that each module mutually combines in above-mentioned many pictures synthesis system can repeat no more referring to the description among Fig. 3 to Fig. 7 herein.
Figure 10 is the structured flowchart of media processor according to the preferred embodiment of the invention.As shown in figure 10, this media processor mainly comprises: receiver module 10, processing module 12 and output module 14.
In preferred implementation process, receiver module 10 receiving terminal code streams, wherein, this terminal code stream enters into MCU inside by network and MCU access module.
In preferred implementation process, processing module 12 is according to picture layout and the synthetic many pictures of many pictures filler code stream information.Wherein, this processing module 12 also is used to carry out code stream protocol processes and rate transition.
Above-mentioned media processor can synthesize picture more than a group with the multi-path media code stream that receives according to predetermined layout, wherein, the size of at least one picture in the above-mentioned layout equals the actual size of shown scene, thereby the image after the processing of process media processor can keep the original appearance size, do not influence expression in the eyes and exchange, effectively improved user experience.
Preferably, at least one little picture can also be arranged in many pictures, wherein, the size of each little picture is less than the actual size of shown scene.The layout of these many pictures specifically can be referring to Fig. 4 and Fig. 5.
By above-mentioned processing, can make the user see the picture of a plurality of scenes as much as possible, effectively improved user's viewing experience.
In sum,, can outside synthesizing a plurality of meeting field information as much as possible, can also keep the actual size of picture displayed scene, be convenient to carry out between the user expression in the eyes and exchange, effectively improve user's telepresenc and experienced by the foregoing description provided by the invention.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a multi-picture synthesis method is applied to video conferencing system, it is characterized in that, comprising:
Obtain the multi-path media code stream, wherein, every road medium code stream is used for a picture of displayed scene;
According to layout described multi-path media code stream is synthesized picture more than a group, wherein, the size of at least one picture in the described layout equals the actual size of shown scene.
2. method according to claim 2 is characterized in that, at least one little picture is arranged in described many pictures, and wherein, the size of each little picture is less than the actual size of shown scene.
3. method according to claim 1 and 2 is characterized in that, also comprises:
According to conference status, determine to need synthetic many pictures group number, every group of described many picture are with a screen display.
4. method according to claim 1 is characterized in that, also comprises:
In meeting,, determine the described layout of change according to conference status;
According to the layout after the described change, described multi-path media code stream is synthesized picture more than a group.
5. method according to claim 1 is characterized in that, also comprises:
In meeting,, determine change code stream source according to conference status;
Obtain new multi-path media code stream from described new code stream source;
According to layout described new multi-path media code stream is synthesized picture more than a group.
6. picture synthesis system more than a kind is applied to video conferencing system, it is characterized in that, comprising:
Access module is used to obtain the multi-path media code stream, and wherein, every road medium code stream is used for a picture of displayed scene;
Medium process module is used for according to layout described multi-path media code stream being synthesized picture more than a group, and wherein, the size of at least one picture in the described layout equals the actual size of shown scene.
7. system according to claim 6 is characterized in that,
Described access module also is used for exporting the described picture more than a group after the described medium process module processing to terminal.
8. system according to claim 7 is characterized in that, described access module and described medium process module are a plurality of, and described system also comprises:
The exchange of media module, the medium process module of this access module correspondence is sent in the media code circulation that is used for that described access module is obtained, and the described many pictures after described medium process module is handled export the access module of this medium process module correspondence to.
9. a media processor is applied to video conferencing system, it is characterized in that, comprising:
Receiver module is used to receive the multi-path media code stream, and wherein, every road medium code stream is used for a picture of displayed scene;
Processing module is used for synthesizing picture more than a group according to the described multi-path media code stream that layout will receive, and wherein, the size of at least one picture in the described layout equals the actual size of shown scene.
Output module is used for the described output of picture more than a group after synthetic.
10. device according to claim 9 is characterized in that, at least one little picture is arranged in described many pictures, and wherein, the size of each little picture is less than the actual size of shown scene.
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| CN201010180447A CN101860715A (en) | 2010-05-14 | 2010-05-14 | Multi-picture synthesis method and system and media processing device |
| PCT/CN2010/080320 WO2011140812A1 (en) | 2010-05-14 | 2010-12-27 | Multi-picture synthesis method and system, and media processing device |
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| CN201010180447A CN101860715A (en) | 2010-05-14 | 2010-05-14 | Multi-picture synthesis method and system and media processing device |
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