CN103384319A - Image resizing method and system of double-current video conference terminal - Google Patents
Image resizing method and system of double-current video conference terminal Download PDFInfo
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Abstract
The invention discloses an image resizing method and system of a double-current video conference terminal. The method comprises the steps that when a current video conference terminal receives the request of a user for terminal image resizing, the current video conference terminal sends the request to a local resizing control unit; the resizing control unit judges whether a remote video conference terminal has the image resizing function and sends the request to a local decoding unit if the remote video conference terminal does not have the image resizing function; all or part of decoded image information is displayed on the current video conference terminal by the decoding unit according to resizing identification and resizing area coordinates included in the request. According to the image resizing method and system of the double-current video conference terminal, the part, of interest to the user, of a double-current image can be obtained by controlling the video conference terminal located at an image receiving end or at an image sending end, and then the part of the double-current image can be displayed in a zoom-in mode to enable the user to observe the details of the image.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of image-scaling method and system of double-current video conference terminal.
Background technology
Video conference is mainly to set up aspectant the interchange in the mode of voice and image between remote terminal.Along with conference system use increasingly extensive, people have been not content with and have only seen long-range video image, but wish to see more information, the information such as chart, data or document of using during as meeting, these information exist in computer with the form of data file usually.Therefore, in many instances, as long-rangely hold a conference or consultation, the occasions such as long-distance education, telecommuting, the collaborative work that all requires to set up video and data in video conference to strengthen the meeting telepresenc, improves meeting efficient.
Existing double-current technology can realize above-mentioned requirements, and in fact double-current technology refers to the two video streaming tranmission techniques, and this technology allows main frame to send simultaneously video information and image information in a video conference, as PPT(PowerPoint, and lantern slide) image information.The double fluid technology based on ITU(International Telecommunications Union, International Telecommunications Union) approval communication standard H.239.H.239 after supporting that call is set up the media connection, H.239 transmit the two-way Media Stream between terminal at two, these two Media Streams are shared call bandwidth, thereby video user can obtain double-current Video service, realize transmitting simultaneously in conference system and showing multi-channel video information.
The video conference that realizes by double-current technology is called double-current video conference, the participant not only can see figure image and the sound on remote site in meeting, can also see simultaneously the image information on the remote computer screen, as the PPT that opens, picture, form etc.At present, in the process that double-current video conference is carried out, people can't dwindle carrying out the part amplification from the image information that is shown in this locality of Remote Acquisitioning, can only switch in the mode of switch window or layout regulation the demonstration size of whole image information, thereby the participant possibly can't see interested image detail clearly from video conference terminal, therefore need to provide a kind of image information that receives for double-current video conference terminal to carry out the method for local convergent-divergent.
Summary of the invention
The object of the invention is to, a kind of image-scaling method and system of double-current video conference terminal is provided, can not according to user's request, carry out the technical problem of local convergent-divergent to the image information of double-current video conference terminal reception to solve prior art.
The present invention solves the problems of the technologies described above by the following technical programs:
A kind of image-scaling method of double-current video conference terminal, said method comprises:
When the current video conference terminal is received the request of user's convergent-divergent terminal image, above-mentioned request is sent to local convergent-divergent control unit;
After above-mentioned convergent-divergent control unit is received above-mentioned request, judge whether the Remote Video Conference terminal possesses image zooming function, if not, above-mentioned request is sent to local decoding unit;
Above-mentioned decoding unit is according to the convergent-divergent sign and the zoom area coordinate that comprise in the request that receives, and decoded whole or topography's information is shown in above-mentioned current video conference terminal.
Above-mentioned convergent-divergent is designated image and dwindles sign or image amplification sign, and the information of above-mentioned convergent-divergent sign and above-mentioned zoom area coordinate is inputted above-mentioned terminal by the user.
According to preferred embodiment, before above-mentioned current video conference terminal is received the request of user's convergent-divergent terminal image, receive the coded message of the complete image that transmits from the Remote Video Conference terminal, and above-mentioned coded message is sent in local decoding unit.
Above-mentioned decoding unit is according to the convergent-divergent that comprises in above-mentioned request sign and zoom area coordinate, and the step that decoded whole or topography's information is shown in above-mentioned current video conference terminal comprises:
Above-mentioned decoding unit is decoded to the coded message that above-mentioned current video conference terminal transmits, then judge whether the convergent-divergent sign that comprises in above-mentioned request is that image dwindles sign, if decoded all images information is sent to above-mentioned current video conference terminal;
Above-mentioned current video conference terminal receives above-mentioned all images information, and above-mentioned all images information is presented on image display area in local display screen.
If the convergent-divergent that comprises in above-mentioned request sign is not that image dwindles sign:
Above-mentioned decoding unit is according to the zoom area coordinate that comprises in above-mentioned request, obtain topography's information corresponding to above-mentioned zoom area coordinate in decoded image information, and above-mentioned topography information is amplified to more than a times of the current size of above-mentioned topography's information, the topography's information after then amplifying sends to above-mentioned current video conference terminal;
The topography information of above-mentioned current video conference terminal after with above-mentioned amplification is presented on image display area in local display screen.
Perhaps, according to another preferred embodiment, after above-mentioned decoding unit obtains topography's information that in decoded image information, above-mentioned zoom area coordinate information is corresponding, above-mentioned topography information is amplified in the same size with above-mentioned image display area, and the topography's information after then amplifying sends to above-mentioned current video conference terminal;
The topography information of above-mentioned current video conference terminal after with above-mentioned amplification is presented on image display area in local display screen.
According to preferred embodiment, if above-mentioned Remote Video Conference terminal possesses image zooming function, above-mentioned convergent-divergent control unit is skipped above-mentioned request is sent to local decoding unit step and subsequent step, then above-mentioned request is sent to above-mentioned Remote Video Conference terminal.
After above-mentioned Remote Video Conference terminal is received above-mentioned request, above-mentioned request is sent to local coding unit;
Above-mentioned coding unit judges whether the convergent-divergent sign that comprises in above-mentioned request is that image dwindles sign, if, current image information to be encoded is all encoded, otherwise:
According to the zoom area coordinate that comprises in above-mentioned request, obtain topography's information corresponding to above-mentioned zoom area coordinate in current image information to be encoded, and above-mentioned topography information is encoded;
After coding was completed, the image information after above-mentioned coding unit will be encoded was sent to the target convergent-divergent control unit that sends above-mentioned request;
The image information of above-mentioned target convergent-divergent control unit after with above-mentioned coding sends to local decoding unit;
The image information of corresponding decoding unit after to the above-mentioned coding of receiving decoded, and then decoded image information sent to the video conference terminal under self;
After corresponding video conference terminal is received above-mentioned decoded image information, it is presented on image display area in local display screen.
The present invention is also by the following technical solutions:
A kind of image scaling system, said system comprises video conference terminal, comprises convergent-divergent control unit and decoding unit in above-mentioned video conference terminal;
Above-mentioned video conference terminal is used for when receiving the request of user's convergent-divergent terminal image, above-mentioned request being sent to local convergent-divergent control unit;
Above-mentioned convergent-divergent control unit is used for judging whether the Remote Video Conference terminal possesses image zooming function after receiving above-mentioned request, if not, above-mentioned request is sent to local decoding unit;
Above-mentioned decoding unit is used for the convergent-divergent sign and the zoom area coordinate that comprise according to above-mentioned request, and decoded whole or topography's information is presented on the local video conference terminal.
According to preferred embodiment, above-mentioned convergent-divergent control unit also is used for when judging the Remote Video Conference terminal and possess image zooming function, above-mentioned request being sent to the Remote Video Conference terminal.
Also comprise zoom request input unit, local request receiving unit, remote request receiving element, coding unit and image-display units in above-mentioned video conference terminal;
Above-mentioned zoom request input unit is used for the request above-mentioned local request receiving of the input unit with local user's convergent-divergent current video conference terminal image;
Above-mentioned local request receiving unit is used for when receiving the request that above-mentioned convergent-divergent input module is sent, above-mentioned request being sent to above-mentioned convergent-divergent control unit;
Above-mentioned remote request receiving element is used for the remote request of the zoomed image that the receiving remote video conference terminal sends, and above-mentioned remote request is sent in local coding unit;
Above-mentioned coding unit, the convergent-divergent that is used for comprising according to above-mentioned remote request identifies and the zoom area coordinate, current image information to be encoded is all encoded, or topography's information corresponding to above-mentioned zoom area coordinate in current image information to be encoded is encoded;
Above-mentioned image-display units is used for the image information that shows that local decoding unit is sent.
Compared with prior art, the present invention has following useful technique effect: the present invention can be according to user's request, the topography's information in scaling video conference terminal image; Not only can by being positioned at the video conference terminal of image receiving terminal, also can process by the video conference terminal that is positioned at the image transmitting terminal request of user's zoomed image; And the image definition of amplifying out is high, has satisfied the demand that the user checks the topography's details in terminal image.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of a part of the present invention, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the image-scaling method flow chart of a kind of double-current video conference terminal in the preferred embodiment of the present invention;
Fig. 2 is the image scaling system module frame chart of a kind of double-current video conference terminal in the preferred embodiment of the present invention.
Embodiment
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearer, clear, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Fig. 1 is the image-scaling method flow chart of a kind of double-current video conference terminal in the preferred embodiment of the present invention.As shown in Figure 1, the method for the preferred embodiment of the present invention comprises the following steps:
Step S101: the current video conference terminal is set up double-current video conference with the Remote Video Conference terminal and is connected;
In the embodiment of the present invention, above-mentioned Remote Video Conference terminal storage has the Array by computer VGA(Video Graphics, Video Graphics Array) image information source of signal input.After current video conference terminal and Remote Video Conference terminal room connected, above-mentioned Remote Video Conference terminal can send to above-mentioned current video conference terminal with each frame image information in the above-mentioned image information source after coding by double-current technology.
Step S102: above-mentioned current video conference terminal receives the coded message of the complete image that transmits from above-mentioned Remote Video Conference terminal, and it is passed to the local decode unit;
When meeting begins, do not have the user to carry out the control of zoomed image, therefore above-mentioned current video conference terminal initially will receive the complete information of each two field picture, but not the cropped enlarged image information that needs.
Step S103: when above-mentioned current video conference terminal is received the request of user's convergent-divergent terminal image, above-mentioned request is sent to local convergent-divergent control unit;
The user can be input to the request of convergent-divergent current video conference terminal image in above-mentioned current video conference terminal by touching or the remote control input method.Above-mentioned request comprises convergent-divergent sign and zoom area coordinate.Above-mentioned convergent-divergent sign is that image dwindles sign or image amplifies sign, represents that respectively the user asks to dwindle current terminal image and amplifies current terminal image.
Step S104: above-mentioned convergent-divergent control unit judges whether the Remote Video Conference terminal possesses image zooming function, if above-mentioned request is sent to above-mentioned Remote Video Conference terminal, and enter S106, otherwise above-mentioned request is sent to local decoding unit;
In step S101, above-mentioned current video conference terminal and Remote Video Conference terminal are set up double-current video conference when being connected, function and relevant parameter that the Remote Video Conference terminal can possess self in advance send to the current video conference terminal, thereby in step S104, the convergent-divergent control unit of current video conference terminal inside can be judged the Remote Video Conference terminal and whether possess image zooming function, and determines to be in this locality or teleprocessing user's request according to the ability of Remote Video Conference terminal.
Step S105: above-mentioned decoding unit is according to the convergent-divergent that comprises in above-mentioned request sign and zoom area coordinate, decoded whole or topography's information is shown in above-mentioned current video conference terminal, and reenters the request of S103 supervisory user;
Above-mentioned steps S105 specifically comprises the following steps:
Above-mentioned decoding unit is decoded to the coded message that the current video conference terminal transmits, then judge whether the convergent-divergent sign that comprises in above-mentioned request is that image dwindles sign, if, decoded all images information is sent to above-mentioned current video conference terminal, otherwise:
According to the zoom area coordinate that comprises in above-mentioned request, obtain topography's information corresponding to above-mentioned zoom area coordinate in decoded image information, and above-mentioned topography information is amplified to more than a times of the current size of above-mentioned topography's information, the topography's information after then amplifying sends to above-mentioned current video conference terminal;
In another preferred embodiment, it is not that image dwindles when identifying that above-mentioned decoding unit is judged the convergent-divergent sign that comprises in above-mentioned request, topography's information that in decoded image information, above-mentioned zoom area coordinate is corresponding is amplified in the same size with above-mentioned image display area, and the topography's information after then amplifying sends to above-mentioned current video conference terminal;
After above-mentioned current video conference terminal is received topography's information after amplification, the topography's information after above-mentioned amplification is presented on image display area in local display screen.
Step S106: the request that above-mentioned Remote Video Conference terminal will be received sends to the local coder unit;
Step S107: above-mentioned coding unit is according to the convergent-divergent sign and the zoom area coordinate that comprise in above-mentioned request, encode in whole or part to image information to be encoded, the image information after then encoding is sent to the target convergent-divergent control unit that sends above-mentioned request;
In step S107, above-mentioned coding unit is specially according to the whole or local method of encoding of above-mentioned request to image information to be encoded:
Above-mentioned coding unit judges whether the convergent-divergent sign that comprises in above-mentioned request is that image dwindles sign, if, current image information to be encoded is all encoded, otherwise:
According to the zoom area coordinate that comprises in above-mentioned request, obtain topography's information corresponding to above-mentioned zoom area coordinate in current image information to be encoded, and above-mentioned topography information is encoded.
Step S108: the image information of above-mentioned target convergent-divergent control unit after with above-mentioned coding sends to local decoding unit;
Step S109: corresponding decoding unit is decoded to the image information of receiving, then with decoded image information display on affiliated video conference terminal.
Above-mentioned steps S109 specifically comprises:
Corresponding decoding unit is decoded to the image information of receiving, then decoded image information is sent to the video conference terminal under self;
After corresponding video conference terminal is received above-mentioned decoded image information, it is presented on image display area in local display screen.
Above step describes the method for the preferred embodiment of the present invention in detail.Owing to upgrading unlike motion video soon by the image information of double-current technical transmission, therefore the embodiment of the present invention is positioned at the video conference terminal of image receiving terminal or image transmitting terminal by control, can obtain the interested part of user in double-current image, then amplify, in order to satisfy the demand that the user observes image detail.
Fig. 2 is the image scaling system module frame chart of a kind of double-current video conference terminal in the preferred embodiment of the present invention.As shown in Figure 2, the system of the preferred embodiment of the present invention comprises video conference terminal, comprises convergent-divergent control unit 1, decoding unit 2, zoom request input unit 3, local request receiving unit 4, remote request receiving element 5, coding unit 6 and image-display units 7 in above-mentioned video conference terminal.
Above-mentioned video conference terminal is used for when receiving the request of user's convergent-divergent terminal image, above-mentioned request being sent to local convergent-divergent control unit.
Above-mentioned convergent-divergent control unit 1 is used for judging whether the Remote Video Conference terminal possesses image zooming function, if not, above-mentioned request is sent to local decoding unit.
Above-mentioned decoding unit 2 is used for the convergent-divergent sign and the zoom area coordinate that comprise according to the above-mentioned request that receives, and decoded whole or topography's information is presented on the local video conference terminal.
Above-mentioned convergent-divergent control unit 1 also is used for when judging the Remote Video Conference terminal and possess image zooming function, above-mentioned request being sent to above-mentioned Remote Video Conference terminal.
Above-mentioned zoom request input unit 3 is used for the request above-mentioned local request receiving of the input unit 4 with local user's convergent-divergent current video conference terminal image.
Above-mentioned local request receiving unit 4 is used for when receiving the request that above-mentioned convergent-divergent input module 3 is sent, above-mentioned request being sent to above-mentioned convergent-divergent control unit 1.
Above-mentioned remote request receiving element 5 is used for the remote request of the zoomed image that the receiving remote video conference terminal sends, and above-mentioned remote request is sent in local coding unit.
Above-mentioned coding unit 6, the convergent-divergent that is used for comprising according to above-mentioned remote request identifies and the zoom area coordinate, current image information to be encoded is all encoded, or topography's information corresponding to above-mentioned zoom area coordinate in current image information to be encoded is encoded.
Above-mentioned image-display units 7 is used for the image information that shows that local decoding unit is sent.
It will be appreciated by those skilled in the art that above-mentioned image scaling system of the present invention can also comprise some other less important module, data/control information receiver module for example, the module that data/prior aries such as control information sending module have realized.
Above-mentioned explanation illustrates and has described the preferred embodiments of the present invention, but as previously mentioned, be to be understood that the present invention is not limited to the disclosed form of this paper, should not regard the eliminating to other embodiment as, and can be used for various other combinations, modification and environment, and can in invention contemplated scope described herein, change by technology or the knowledge of above-mentioned instruction or association area.And the change that those skilled in the art carry out and variation do not break away from the spirit and scope of the present invention, all should be in the protection range of claims of the present invention.
Claims (11)
1. the image-scaling method of a double-current video conference terminal, is characterized in that, comprising:
When the current video conference terminal is received the zoom request of user's convergent-divergent terminal image, described request is sent to local convergent-divergent control unit;
After described convergent-divergent control unit is received described request, judge whether the Remote Video Conference terminal possesses image zooming function, if not, described request is sent to local decoding unit;
Described decoding unit is according to the convergent-divergent sign and the zoom area coordinate that comprise in the request that receives, and decoded whole or topography's information is shown in described current video conference terminal.
2. method according to claim 1 is characterized in that: described convergent-divergent is designated that image dwindles sign or image amplifies sign, and the information of described convergent-divergent sign and described zoom area coordinate is inputted described terminal by the user.
3. method according to claim 2, it is characterized in that: before described current video conference terminal is received the request of user's convergent-divergent terminal image, the coded message of the complete image that reception is transmitted from the Remote Video Conference terminal, and described coded message is sent in local decoding unit.
4. method according to claim 3, is characterized in that, described decoding unit is according to the convergent-divergent that comprises in described request sign and zoom area coordinate, and the step that decoded whole or topography's information is shown in described current video conference terminal comprises:
Described decoding unit is decoded to the coded message that described current video conference terminal transmits, then judge whether the convergent-divergent sign that comprises in described request is that image dwindles sign, if decoded all images information is sent to described current video conference terminal;
Described current video conference terminal receives described all images information, and described all images information is presented on image display area in local display screen.
5. method according to claim 4, is characterized in that, if the convergent-divergent that comprises in described request sign is not that image dwindles sign:
Described decoding unit is according to the zoom area coordinate that comprises in described request, obtain topography's information that described in decoded image information, the zoom area coordinate is corresponding, and described topography information is amplified to more than a times of the current size of described topography's information, the topography's information after then amplifying sends to described current video conference terminal;
The topography information of described current video conference terminal after with described amplification is presented on image display area in local display screen.
6. method according to claim 5, it is characterized in that: after described decoding unit obtains topography's information that described in decoded image information, the zoom area coordinate information is corresponding, described topography information is amplified in the same size with described image display area, and the topography's information after then amplifying sends to described current video conference terminal;
The topography information of described current video conference terminal after with described amplification is presented on image display area in local display screen.
7. method according to claim 3, it is characterized in that: if described Remote Video Conference terminal possesses image zooming function, described convergent-divergent control unit is skipped described request is sent to local decoding unit step and subsequent step, then described request is sent to described Remote Video Conference terminal.
8. method according to claim 7 is characterized in that:
After described Remote Video Conference terminal is received described request, described request is sent to local coding unit;
Described coding unit judges whether the convergent-divergent sign that comprises in described request is that image dwindles sign, if, current image information to be encoded is all encoded, otherwise:
According to the zoom area coordinate that comprises in described request, obtain topography's information corresponding to zoom area coordinate described in current image information to be encoded, and described topography information is encoded;
After coding was completed, the image information after described coding unit will be encoded was sent to the target convergent-divergent control unit that sends described request;
The image information of described target convergent-divergent control unit after with described coding sends to local decoding unit;
The image information of corresponding decoding unit after to the described coding of receiving decoded, and then decoded image information sent to the video conference terminal under self;
After corresponding video conference terminal is received described decoded image information, it is presented on image display area in local display screen.
9. image scaling system, it is characterized in that: described system comprises video conference terminal, comprises convergent-divergent control unit and decoding unit in described video conference terminal;
Described video conference terminal is used for when receiving the zoom request of user's convergent-divergent terminal image, described request being sent to described convergent-divergent control unit;
Described convergent-divergent control unit is used for judging whether the Remote Video Conference terminal possesses image zooming function after receiving described request, if not, described request is sent to described decoding unit;
Described decoding unit is used for the convergent-divergent sign and the zoom area coordinate that comprise according to the described request that receives, and decoded whole or topography's information is presented on the local video conference terminal.
10. system according to claim 9 is characterized in that: described convergent-divergent control unit also is used for when judging the Remote Video Conference terminal and possess image zooming function, described request being sent to described Remote Video Conference terminal.
11. system according to claim 10 is characterized in that, also comprises zoom request input unit, local request receiving unit, remote request receiving element, coding unit and image-display units in described video conference terminal;
Described zoom request input unit is used for the request described local request receiving of the input unit with local user's convergent-divergent current video conference terminal image;
Described local request receiving unit is used for when receiving the request that described convergent-divergent input module is sent, described request being sent to described convergent-divergent control unit;
Described remote request receiving element is used for the remote request of the zoomed image that the receiving remote video conference terminal sends, and described remote request is sent in local coding unit;
Described coding unit, the convergent-divergent that is used for comprising according to described remote request identifies and the zoom area coordinate, current image information to be encoded is all encoded, or topography's information corresponding to zoom area coordinate described in current image information to be encoded is encoded;
Described image-display units is used for the image information that shows that local decoding unit is sent.
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