CN103384319B - The image-scaling method and system of double-current video conference terminal - Google Patents
The image-scaling method and system of double-current video conference terminal Download PDFInfo
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Abstract
The invention discloses a kind of image-scaling method and system of double-current video conference terminal, the above method includes：When current video conference terminal receives the request of user's scaling terminal image, above-mentioned request is sent to local zoom control unit；Whether above-mentioned zoom control unit judges Remote Video Conference terminal has image zooming function, if it is not, above-mentioned request to be then sent to local decoding unit；Above-mentioned decoding unit is according to the scaling mark and zoom area coordinate included in above-mentioned request, by decoded whole or topography's presentation of information in above-mentioned current video conference terminal.The present invention, positioned at image receiving terminal or the video conference terminal of image transmitting terminal, can be obtained the interested part of user in double-current image, then amplification display, realize the demand that user observes image detail by control.
Description
Technical field
The present invention relates to the communications field more particularly to a kind of image-scaling methods and system of double-current video conference terminal.
Background technology
Video conference mainly establishes aspectant exchange between remote terminal in a manner of voice and image.With meeting
System is applied increasingly extensive, and people, which have been not content with, only sees long-range video image, but wants to see more
Information, such as there is electricity in chart, data or the document information used during meeting, these information usually in the form of data file
In brain.Therefore, in many instances, such as long-range consultation, long-distance education, telecommuting occasion, require in video conference
The collaborative work of video and data is established, to enhance meeting telepresenc, improves meeting efficiency.
Existing double fluid technology can realize above-mentioned requirements, and double-current technology actually refers to two video streaming tranmission techniques, should
Technology allows host to send video information and image information, such as PPT simultaneously in a video conference（PowerPoint, magic lantern
Piece）Image information.Double-current technology is based on ITU（International Telecommunications Union, international telecommunication connection
Alliance）The communication standard of approval is H.239.H.239 it after call is supported to establish media connection, is passed between two H.239 terminal
Two-way Media Stream is sent, this two Media Streams share call bandwidth, so as to which video user can obtain double-current Video service, realize
Multi-channel video information is transmitted and shows in conference system simultaneously.
Double-current video conference is known as by the video conference that double-current technology is realized, participant not can be only seen in a meeting
Figure image and sound in remote site, while can also see the image information on remote computer screen, as open
PPT, picture, table etc..At present, during double-current video conference carries out, people can't be to from the display remotely obtained
Partial enlargement diminution is carried out in local image information, whole image letter can only be switched in a manner of switch window or adjustment layout
The display size of breath, so as to which participant possibly can not see interested image detail clearly from video conference terminal, it is therefore desirable to
A kind of method that image information received for double-current video conference terminal carries out local scale is provided.
Invention content
The object of the present invention is to provide a kind of image-scaling method and system of double-current video conference terminal, to solve
The prior art cannot be according to user demand, and the technology that local scale is carried out to the image information that double-current video conference terminal receives is asked
Topic.
The present invention solves above-mentioned technical problem by the following technical programs：
A kind of image-scaling method of double fluid video conference terminal, the above method include：
When current video conference terminal receives the request of user's scaling terminal image, above-mentioned request is sent to local contracting
Put control unit；
After above-mentioned zoom control unit receives above-mentioned request, judge whether Remote Video Conference terminal has image scaling work(
Can, if it is not, above-mentioned request to be then sent to local decoding unit；
The scaling mark and zoom area coordinate that above-mentioned decoding unit includes in the request according to reception, will be decoded complete
Portion or topography's presentation of information are in above-mentioned current video conference terminal.
Above-mentioned scaling is identified as image down mark or image magnification mark, and above-mentioned scaling mark and above-mentioned zoom area are sat
Target information inputs above-mentioned terminal by user.
According to preferred embodiment, before above-mentioned current video conference terminal receives the request that user scales terminal image, receive
The coding information of the complete image transmitted from Remote Video Conference terminal, and above-mentioned coding information is transmitted to local decoding list
In member.
Above-mentioned decoding unit is according to the scaling mark and zoom area coordinate included in above-mentioned request, by decoded whole
Or topography's presentation of information includes in the step of above-mentioned current video conference terminal：
The coding information that above-mentioned decoding unit transmits above-mentioned current video conference terminal is decoded, and is then judged above-mentioned
The scaling included in request identifies whether to identify for image down, if so, decoded all images information is sent to
State current video conference terminal；
Above-mentioned current video conference terminal receives above-mentioned all images information, and by above-mentioned all images presentation of information at this
On image display area in ground display screen.
If the scaling mark included in above-mentioned request is not image down mark,：
Above-mentioned decoding unit is obtained according to the zoom area coordinate included in above-mentioned request in decoded image information
The corresponding topography's information of zoom area coordinate is stated, and above-mentioned topography's information is amplified to above-mentioned topography's information and is worked as
Then amplified topography's information is sent to above-mentioned current video conference terminal by one times or more of preceding size；
Figure of the above-mentioned current video conference terminal by above-mentioned amplified topography's presentation of information in local display
As on viewing area.
Alternatively, according to another preferred embodiment, above-mentioned decoding unit obtains above-mentioned scaling area in decoded image information
After the corresponding topography's information of domain coordinate information, above-mentioned topography's information is amplified to the size with above-mentioned image display area
Unanimously, amplified topography's information is then sent to above-mentioned current video conference terminal；
Figure of the above-mentioned current video conference terminal by above-mentioned amplified topography's presentation of information in local display
As on viewing area.
According to preferred embodiment, if above-mentioned Remote Video Conference terminal has image zooming function, above-mentioned zoom control
Unit is skipped is sent to local decoding unit step and subsequent step by above-mentioned request, is then sent to above-mentioned request above-mentioned
Remote Video Conference terminal.
After above-mentioned Remote Video Conference terminal receives above-mentioned request, above-mentioned request is sent to local coding unit；
The scaling that above-mentioned coding unit judges to include in above-mentioned request identifies whether to identify for image down, if so, right
Current image information to be encoded is all encoded, otherwise：
According to the zoom area coordinate included in above-mentioned request, above-mentioned scaling area in current image information to be encoded is obtained
The corresponding topography's information of domain coordinate, and above-mentioned topography's information is encoded；
After the completion of coding, the image information after coding is transmitted to the target scale for sending out above-mentioned request by above-mentioned coding unit
Control unit；
Image information after above-mentioned coding is sent to local decoding unit by above-mentioned target scale control unit；
Corresponding decoding unit is decoded the image information after the above-mentioned coding that receives, then by decoded image
Information is sent to the video conference terminal belonging to itself；
After corresponding video conference terminal receives above-mentioned decoded image information, it is included in local display
On image display area.
The present invention also uses following technical scheme：
A kind of image scaling system, above system include video conference terminal, include scaling in above-mentioned video conference terminal
Control unit and decoding unit；
Above-mentioned video conference terminal, in the request for receiving user's scaling terminal image, above-mentioned request to be sent to
Local zoom control unit；
Above-mentioned zoom control unit, for after above-mentioned request is received, judging whether Remote Video Conference terminal has figure
As zoom function, if it is not, above-mentioned request to be then sent to local decoding unit；
Above-mentioned decoding unit, for according to included in above-mentioned request scaling mark and zoom area coordinate, after decoding
Whole or topography's presentation of information on local video conference terminal.
According to preferred embodiment, above-mentioned zoom control unit is additionally operable to judging that Remote Video Conference terminal has image
During zoom function, above-mentioned request is sent to Remote Video Conference terminal.
Zoom request input unit, local request reception unit, remote request is further included in above-mentioned video conference terminal to connect
Receive unit, coding unit and image-display units；
Above-mentioned zoom request input unit inputs for local user to be scaled to the request of current video conference terminal image
Above-mentioned local request reception unit；
Above-mentioned local request reception unit, for when receiving the request that above-mentioned scaling input module is sent, being asked above-mentioned
It asks and is sent to above-mentioned zoom control unit；
Above-mentioned remote request receiving unit, please for receiving the long-range of zoomed image that Remote Video Conference terminal is sent
It asks, and above-mentioned remote request is sent in local coding unit；
Above-mentioned coding unit, for the scaling mark and zoom area coordinate included according to above-mentioned remote request, to current
Image information to be encoded is all encoded or corresponding to above-mentioned zoom area coordinate in current image information to be encoded
Topography's information is encoded；
Above-mentioned image-display units, for showing image information that local decoding unit is sent.
Compared with prior art, the present invention has following advantageous effects：The present invention can be scaled according to user demand
Topography's information in video conference terminal image；Not only can by being located at the video conference terminal of image receiving terminal,
The request of user's zoomed image can be handled by being located at the video conference terminal of image transmitting terminal；And the image of amplification out
Clarity is high, meets the demand for topography's details that user is checked in terminal image.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and forms the part of the present invention, this hair
Bright illustrative embodiments and their description do not constitute improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is a kind of image-scaling method flow chart of double fluid video conference terminal in the preferred embodiment of the present invention；
Fig. 2 is a kind of image scaling system module frame chart of double fluid video conference terminal in the preferred embodiment of the present invention.
Specific embodiment
In order to make technical problems, technical solutions and advantages to be solved clearer, clear, tie below
Drawings and examples are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
Fig. 1 is a kind of image-scaling method flow chart of double fluid video conference terminal in the preferred embodiment of the present invention.Such as Fig. 1
Shown, the method for the preferred embodiment of the present invention includes the following steps：
Step S101：Current video conference terminal is established double-current video conference with Remote Video Conference terminal and is connect；
In the embodiment of the present invention, above-mentioned Remote Video Conference terminal storage has through computer VGA（Video Graphics
Array, Video Graphics Array）The image information source of signal input.By double-current technology in current video conference terminal and remotely
After establishing connection between video conference terminal, above-mentioned Remote Video Conference terminal can will be in the above-mentioned image information source after coding
Each frame image information is sent to above-mentioned current video conference terminal.
Step S102：The complete image that above-mentioned current video conference terminal reception is transmitted from above-mentioned Remote Video Conference terminal
Coding information, and be passed along local decoding unit；
When meeting starts, no user zooms in and out the control of image, therefore above-mentioned current video conference terminal is initial
The image information that the complete information for receiving each frame image rather than cropped needs are amplified.
Step S103：When above-mentioned current video conference terminal receives the request of user's scaling terminal image, by above-mentioned request
It is sent to local zoom control unit；
User can be input to the request of scaling current video conference terminal image by touching or being remotely controlled input method
In above-mentioned current video conference terminal.Above-mentioned request includes scaling mark and zoom area coordinate.Above-mentioned scaling mark is figure
As reducing mark or image magnification mark, represent that user asks to reduce present terminal image and amplification present terminal image respectively.
Step S104：Whether above-mentioned zoom control unit judges Remote Video Conference terminal has image zooming function, if
It is above-mentioned request to be then sent to above-mentioned Remote Video Conference terminal, and into S106, above-mentioned request is otherwise sent to local
Decoding unit；
In step S101, above-mentioned current video conference terminal is established double-current video conference with Remote Video Conference terminal and is connected
When connecing, function and relevant parameter that Remote Video Conference terminal can in advance have itself are sent to current video conference terminal,
So as to which in step S104, the zoom control unit inside current video conference terminal can judge that Remote Video Conference terminal is
It is no to have image zooming function, and be in local or remote processing user according to the decision of the ability of Remote Video Conference terminal
Request.
Step S105：Above-mentioned decoding unit will be solved according to the scaling mark and zoom area coordinate that are included in above-mentioned request
Whole or topography's presentation of information after code reenters S103 monitoring users and asks in above-mentioned current video conference terminal
It asks；
Above-mentioned steps S105 specifically includes following steps：
The coding information that above-mentioned decoding unit transmits current video conference terminal is decoded, and then judges above-mentioned request
In the scaling that includes identify whether to identify for image down, if so, decoded all images information is sent to above-mentioned work as
Preceding video conference terminal, otherwise：
According to the zoom area coordinate included in above-mentioned request, obtain above-mentioned zoom area in decoded image information and sit
Corresponding topography's information is marked, and above-mentioned topography's information is amplified to one times of the above-mentioned current size of topography's information
More than, amplified topography's information is then sent to above-mentioned current video conference terminal；
In another preferred embodiment, above-mentioned decoding unit judges that the scaling included in above-mentioned request mark is not image
Reduce mark when, by the corresponding topography's information of zoom area coordinate above-mentioned in decoded image information be amplified to it is above-mentioned
Image display area it is in the same size, amplified topography's information is then sent to above-mentioned current video conference terminal；
After above-mentioned current video conference terminal receives amplified topography's information, by above-mentioned amplified topography
Presentation of information is on the image display area in local display.
Step S106：The request received is sent to local coder unit by above-mentioned Remote Video Conference terminal；
Step S107：Above-mentioned coding unit is treated according to the scaling mark and zoom area coordinate that are included in above-mentioned request
The whole of the image information of coding or part are encoded, and are then transmitted to the image information after coding and are sent out above-mentioned request
Target scale control unit；
In step s 107, above-mentioned coding unit according to above-mentioned request to the whole of image information to be encoded or part into
Row coding method be specially：
The scaling that above-mentioned coding unit judges to include in above-mentioned request identifies whether to identify for image down, if so, right
Current image information to be encoded is all encoded, otherwise：
According to the zoom area coordinate included in above-mentioned request, above-mentioned scaling area in current image information to be encoded is obtained
The corresponding topography's information of domain coordinate, and above-mentioned topography's information is encoded.
Step S108：Image information after above-mentioned coding is sent to local decoding list by above-mentioned target scale control unit
Member；
Step S109：Corresponding decoding unit is decoded the image information received, then believes decoded image
Breath is shown on affiliated video conference terminal.
Above-mentioned steps S109 is specifically included：
Corresponding decoding unit is decoded the image information received, is then sent to decoded image information certainly
Video conference terminal belonging to body；
After corresponding video conference terminal receives above-mentioned decoded image information, it is included in local display
On image display area.
The method that above step describes the preferred embodiment of the present invention in detail.Due to being believed by the image of double-current technical transmission
Breath updating decision unlike motion video, thus the embodiment of the present invention by control positioned at image receiving terminal or image transmitting terminal
Video conference terminal can obtain the interested part of user in double-current image, then amplify, and image is observed to meet user
The demand of details.
Fig. 2 is a kind of image scaling system module frame chart of double fluid video conference terminal in the preferred embodiment of the present invention.Such as
Shown in Fig. 2, the system of the preferred embodiment of the present invention includes video conference terminal, includes zoom control in above-mentioned video conference terminal
Unit 1, decoding unit 2, zoom request input unit 3, local request reception unit 4, remote request receiving unit 5, coding are single
Member 6 and image-display units 7.
Above-mentioned video conference terminal, in the request for receiving user's scaling terminal image, above-mentioned request to be sent to
Local zoom control unit.
Above-mentioned zoom control unit 1, for judging whether Remote Video Conference terminal has image zooming function, if it is not,
Above-mentioned request is then sent to local decoding unit.
Above-mentioned decoding unit 2, will for the scaling mark and zoom area coordinate included in the above-mentioned request according to reception
Decoded whole or topography's presentation of information are on local video conference terminal.
Above-mentioned zoom control unit 1 is additionally operable to when judging that Remote Video Conference terminal has image zooming function, will
Above-mentioned request is sent to above-mentioned Remote Video Conference terminal.
Above-mentioned zoom request input unit 3, it is defeated for local user to be scaled to the request of current video conference terminal image
Enter above-mentioned local request reception unit 4.
Above-mentioned local request reception unit 4, will be above-mentioned for when receiving the request that above-mentioned scaling input module 3 is sent
Request is sent to above-mentioned zoom control unit 1.
Above-mentioned remote request receiving unit 5, please for receiving the long-range of zoomed image that Remote Video Conference terminal is sent
It asks, and above-mentioned remote request is sent in local coding unit.
Above-mentioned coding unit 6, for the scaling mark and zoom area coordinate included according to above-mentioned remote request, to current
Image information to be encoded is all encoded or corresponding to above-mentioned zoom area coordinate in current image information to be encoded
Topography's information is encoded.
Above-mentioned image-display units 7, for showing image information that local decoding unit is sent.
It will be appreciated by those skilled in the art that the present invention above-mentioned image scaling system can also include it is some other secondary
Module, such as the module that the prior arts such as data/control information receiving module, data/control information sending module have been carried out.
The preferred embodiment of the present invention has shown and described in above description, but as previously described, it should be understood that the present invention is not
Form disclosed herein is confined to, is not to be taken as the exclusion to other embodiment, and available for various other combinations, modification
And environment, and can be carried out in the scope of the invention is set forth herein by the above teachings or related fields of technology or knowledge
Change.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, then it all should be in institute of the present invention
In attached scope of the claims.
Claims (11)
1. a kind of image-scaling method of double fluid video conference terminal, which is characterized in that including：
When current video conference terminal receives the zoom request of user's scaling terminal image, local contracting is sent the request to
Put control unit；
After the zoom control unit receives the request, judge whether Remote Video Conference terminal has image zooming function,
If it is not, then send the request to local decoding unit；
Scaling that the decoding unit includes in the request according to reception mark and zoom area coordinate, by decoded whole or
Topography's presentation of information is in the current video conference terminal.
2. according to the method described in claim 1, it is characterized in that：The scaling is identified as image down mark or image magnification
The information of mark, the scaling mark and the zoom area coordinate inputs the terminal by user.
3. according to the method described in claim 2, it is characterized in that：The current video conference terminal receives user and scales terminal
Before the request of image, the coding information of the complete image transmitted from Remote Video Conference terminal is received, and by the coding information
It is transmitted in local decoding unit.
4. according to the method described in claim 3, it is characterized in that, the decoding unit is according to the scaling included in the request
Mark and zoom area coordinate, by decoded whole or topography's presentation of information in the step of the current video conference terminal
Suddenly include：
The coding information that the decoding unit transmits the current video conference terminal is decoded, and then judges the request
In the scaling that includes identify whether to identify for image down, if so, decoded all images information is sent to described work as
Preceding video conference terminal；
The current video conference terminal receives all images information, and by all images presentation of information locally aobvious
On image display area in display screen.
5. if according to the method described in claim 4, it is characterized in that, the scaling mark included in the request is not image contracting
Small mark, then：
The decoding unit is obtained and is contracted described in decoded image information according to the zoom area coordinate included in the request
The corresponding topography's information of area coordinate is put, and it is currently big that topography's information is amplified to topography's information
Then amplified topography's information is sent to the current video conference terminal by small one times or more；
The current video conference terminal shows image of the amplified topography's presentation of information in local display
Show in area.
6. according to the method described in claim 4, it is characterized in that：If the scaling mark included in the request is not image contracting
Small mark, then the decoding unit obtain the corresponding topography of zoom area coordinate information described in decoded image information
After information, topography's information is amplified to it is in the same size with described image viewing area, then by amplified part
Image information is sent to the current video conference terminal；
The current video conference terminal shows image of the amplified topography's presentation of information in local display
Show in area.
7. according to the method described in claim 3, it is characterized in that, the method further includes：If the Remote Video Conference is whole
End has image zooming function, then the request is sent to the solution of the Remote Video Conference terminal by the zoom control unit
Code unit, the scaling mark and zoom area coordinate that the decoding unit includes in the request according to reception will be decoded complete
Portion or topography's presentation of information are in the Remote Video Conference terminal.
8. according to the method described in claim 7, it is characterized in that：
The decoding unit that the request is sent to the Remote Video Conference terminal, the decoding unit is according to reception
The scaling mark and zoom area coordinate included in request, by decoded whole or topography's presentation of information in described long-range
Video conference terminal includes：
After the Remote Video Conference terminal receives the request, the Remote Video Conference terminal is sent the request to
Coding unit；
The scaling that the coding unit judges to include in the request identifies whether to identify for image down, if so, to current
Image information to be encoded is all encoded, otherwise：
According to the zoom area coordinate included in the request, obtain zoom area described in current image information to be encoded and sit
Corresponding topography's information is marked, and topography's information is encoded；
After the completion of coding, the image information after coding is transmitted to the target scale control for sending out the request by the coding unit
Unit；
Image information after the coding is sent to the solution of the Remote Video Conference terminal by the target scale control unit
Code unit；
Corresponding decoding unit is decoded the image information after the coding that receives, then by decoded image information
It is sent to the video conference terminal belonging to itself；
After corresponding video conference terminal receives the decoded image information, it is included at Remote Video Conference end
It holds on the image display area in display screen.
9. a kind of image scaling system, it is characterised in that：The system comprises video conference terminal, in the video conference terminal
Including zoom control unit and decoding unit；
The video conference terminal, in the zoom request for receiving user's scaling terminal image, sending the request to
The zoom control unit；
The zoom control unit, for after the request is received, judging whether Remote Video Conference terminal has image contracting
Playing function, if it is not, then sending the request to the decoding unit；
The decoding unit for the scaling mark and zoom area coordinate included in the request according to reception, will decode
Whole or topography's presentation of information afterwards is on local video conference terminal.
10. system according to claim 9, it is characterised in that：The zoom control unit is additionally operable to judging remotely
When video conference terminal has image zooming function, the request is sent to the Remote Video Conference terminal, it is described long-range
The scaling mark and zoom area coordinate that video conference terminal includes in the request according to reception, by decoded whole or part
Image information display is in the Remote Video Conference terminal.
11. system according to claim 10, which is characterized in that it is defeated to further include zoom request in the video conference terminal
Enter unit, local request reception unit, remote request receiving unit, coding unit and image-display units；
The zoom request input unit, for scaling local user described in the request input of current video conference terminal image
Local request reception unit；
The local request reception unit, for when receiving the request that the scaling input module is sent, the request to be sent out
Give the zoom control unit；
The remote request receiving unit, for receiving the remote request for the zoomed image that Remote Video Conference terminal is sent, and
The remote request is sent in local coding unit；
The coding unit, for the scaling mark and zoom area coordinate included according to the remote request, to currently waiting to compile
The image information of code is all encoded or to the corresponding part of zoom area coordinate described in current image information to be encoded
Image information is encoded；
Described image display unit, for showing image information that local decoding unit is sent.
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| CN107509052B (en) * | 2017-09-08 | 2020-07-07 | 广州视源电子科技股份有限公司 | Double-current video conference method, device, electronic equipment and system |
| CN109309805B (en) * | 2018-09-30 | 2021-04-06 | 广州视源电子科技股份有限公司 | Multi-window display method, device, equipment and system for video conference |
| CN109862419B (en) * | 2018-11-09 | 2021-08-03 | 广州长嘉电子有限公司 | Intelligent digital laser television interaction method and system |
| CN113936512B (en) * | 2021-12-17 | 2022-03-01 | 正方软件股份有限公司 | Remote teaching method and system for colleges and universities |
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