Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention is clearer,, the embodiment of the invention is explained further details below in conjunction with embodiment and accompanying drawing.At this, illustrative examples of the present invention and explanation thereof are used to explain the present invention, but not as to qualification of the present invention.
A kind of method flow diagram that in conference caption, inserts picture that Fig. 1 provides for the embodiment of the invention, this method are applied in the video conferencing system in the conference terminal as transmitting terminal, and please with reference to Fig. 1, this method comprises:
101: obtain captions and pictorial information, generate the image mixed character typeset captions;
In the present embodiment, can obtain captions and pictorial information, also can obtain captions and pictorial information from the caption editing window at Web interface from local caption editing interface.For example:
According to an execution mode of present embodiment, the user opens the caption editing interface on conference terminal, and input text is as conference caption; Open the pictures window through a predefined shortcut on the conference terminal then, therefrom the picture of selection needs is inserted in the above-mentioned text, continues input text if desired; Picture continued text maninulation can inserted; If no longer input text then finishes editor, the conference terminal of present embodiment can get access to the conference caption of editor's image mixed character typeset this time through the caption editing interface; Be captions and pictorial information; In this execution mode, picture is loaded in the internal memory of conference terminal in advance, and starts the pictures at this picture place through predefined shortcut.
According to the another one execution mode of present embodiment, the user enters into the web interface of this conference terminal, the caption editing window input text at this web interface through the IP address of visit conference terminal; And in this web interface, open path, picture place, and select picture to be inserted in the above-mentioned text, continue input text if desired; Picture continued text maninulation can inserted, if input text no longer then finishes editor; The conference terminal of present embodiment can obtain the conference caption of editor's image mixed character typeset this time through the caption editing window on this web interface; Be captions and pictorial information, in the present embodiment, picture is stored on the PC of the IP address of visiting conference terminal; And not being loaded into conference terminal, the mode of this insertion picture has been saved the internal memory of conference terminal.
102: generate image mixed character typeset captions code stream according to said image mixed character typeset captions;
In the present embodiment, behind the captions of the image mixed character typeset that obtains according to step 101, can adopt conventional method to generate image mixed character typeset captions code stream, repeat no more at this.
103: with the back transmission of encoding of said image mixed character typeset captions code stream and video image code stream.
In the present embodiment, can the captions of image mixed character typeset directly be added on the video image, be transferred to far-end together, also can the captions and the video image of image mixed character typeset be sent to far-end respectively, decode respectively, and then stack shows by far-end.For example:
An execution mode according to present embodiment; Earlier said image mixed character typeset captions code stream and video image code stream are superposeed; Again the code stream after the stack is encoded the back through data channel transmission, according to this execution mode, the opposite end receives behind the code stream of data channel transmission; Can show behind the direct decoding that what demonstrate is the effect after the stack of image mixed character typeset captions and video image.
This execution mode is so that image mixed character typeset captions code stream and video image code stream are superposed to example; But present embodiment not with this as restriction; For example also can be with image mixed character typeset captions code stream and the audio-video code stream back coding that superposes together, and show in receiving terminal decoding back or broadcast.
Another one execution mode according to present embodiment; Said image mixed character typeset captions code stream is encoded the back through the control channel transmission; Pass through data channel transmission after said video image code stream encoded; According to this execution mode, the opposite end receives image mixed character typeset captions code stream and video image code stream from control channel and data channel respectively, respectively after the decoding; Again decoded image mixed character typeset captions and the video image back that superposes is shown that what demonstrate is the effect after the image mixed character typeset captions superpose with video image.
This execution mode is with receiving terminal image mixed character typeset captions and video image to be superposed to example; But present embodiment not with this as restriction; For example; If what front end issued through data channel is the audio-video code stream behind the coding, then the receiving terminal of present embodiment also can be after decoding the code stream that receives respectively, and image mixed character typeset captions and audio frequency and video are superposeed together, and the back shows or broadcast.
The method of present embodiment is inserted picture through conference terminal equipment editor image mixed character typeset captions in the middle of caption character, do not need independent additional configuration film titler promptly to realize the function of overlapping text machine editor image mixed character typeset captions in video conference terminal.
A kind of device composition frame chart that in conference caption, inserts picture that Fig. 2 provides for the embodiment of the invention; Please with reference to Fig. 2; The device of present embodiment is used to realize aforementioned method embodiment illustrated in fig. 1; Be applied to video conference terminal as transmitting terminal, method corresponding embodiment illustrated in fig. 1, this device comprises:
Caption editing unit 21 is used to obtain captions and pictorial information, generates the image mixed character typeset captions;
Captions generation unit 22 is used for generating image mixed character typeset captions code stream according to said image mixed character typeset captions;
Subtitle superposition unit 23 is used for the back transmission of encoding of said image mixed character typeset captions code stream and video image code stream.
According to an execution mode of present embodiment, caption editing unit 21 is used for obtaining captions and pictorial information from local caption editing interface; Perhaps the caption editing window from the Web interface obtains captions and pictorial information.See the description of step 101 for details, repeat no more at this.
According to the another one execution mode of present embodiment, subtitle superposition unit 23 is used for said image mixed character typeset captions code stream and video image code stream are superposeed, and passes through data channel transmission after the code stream after the stack is encoded; Perhaps said image mixed character typeset captions code stream is encoded the back through the control channel transmission, pass through data channel transmission after said video image code stream is encoded.See the description of step 103 for details, repeat no more at this.
According to the another one execution mode of present embodiment, this device also comprises:
Memory cell 24 is used for picture, thinks that caption editing unit 21 provides pictorial information;
Quickly starting unit 25 is used to start the pictures at the picture place of said memory cell 24.
The composition of this execution mode repeats no more at this corresponding to the execution mode of this locality editor's image mixed character typeset captions in the step 101 embodiment illustrated in fig. 1.
The device of present embodiment inserts picture through conference terminal equipment editor image mixed character typeset captions in the middle of caption character, do not need independent additional configuration film titler promptly to realize the function of stack editor image mixed character typeset captions in video conference terminal.
The composition frame chart of a kind of video conference terminal that Fig. 3 provides for the embodiment of the invention; In the present embodiment; This video conference terminal is applied to transmitting terminal; Please with reference to Fig. 3, the video conference terminal of present embodiment comprises: video camera 31, input unit 32 and the device 33 that in conference caption, inserts picture, wherein:
Video camera 31 is used for gathering audio-video signal and offers the said device 33 that inserts picture at conference caption.
Input unit 32 is used to the said device 33 that in conference caption, inserts picture inputting interface is provided.
The device 33 that in conference caption, inserts picture is used to edit the image mixed character typeset captions, in the middle of caption character, inserts picture.
In the present embodiment; Should be in conference caption inserting the device that in conference caption, inserts picture of the embodiment that the device 33 of picture can be through Fig. 2 realizes; Because in the embodiment shown in Figure 2; This device that in conference caption, inserts picture has been done to clearly demonstrate, repeated no more at this.
The video conference terminal of present embodiment inserts picture through editor's image mixed character typeset captions in the middle of caption character, do not need independent additional configuration film titler promptly to realize the function of overlapping text machine editor image mixed character typeset captions in video conference terminal.
A kind of method of in conference caption, inserting picture that Fig. 4 provides for the embodiment of the invention, this method are applied in the video conferencing system in the conference terminal as receiving terminal, and please with reference to Fig. 4, this method comprises:
401: receive the code stream that transmits on the data channel, said code stream comprises image mixed character typeset captions code stream and video image code stream, and said image mixed character typeset captions comprise conference caption and picture;
402: said image mixed character typeset captions code stream and said video image code stream are decoded back the demonstration.
Present embodiment is corresponding to a kind of execution mode before in the step 103 embodiment illustrated in fig. 1; Promptly image mixed character typeset captions code stream and video image code stream stack back are encoded as the conference terminal of transmitting terminal; Execution mode through data channel transmission again; Present embodiment can be directly to showing behind this code stream decoding, because this code stream has comprised image mixed character typeset captions code stream and video image code stream after receiving the code stream that transmits on the data channel; Therefore, the image that shows after the decoding has promptly comprised conference caption and the video image that inserts picture.
The method of present embodiment has obtained the conference caption of image mixed character typeset through the code stream that receives is decoded, and does not need independent additional configuration film titler promptly to realize the function of stack generation image mixed character typeset captions in video conference terminal.
A kind of device that in conference caption, inserts picture that Fig. 5 provides for the embodiment of the invention; Please with reference to Fig. 5, the device of present embodiment is used to realize aforementioned method embodiment illustrated in fig. 4, is applied to the video conference terminal as receiving terminal; Method corresponding embodiment illustrated in fig. 4, this device comprises:
Receiving element 51 is used to receive the code stream that transmits on the data channel, and said code stream comprises image mixed character typeset captions code stream and video image code stream, and said image mixed character typeset captions comprise conference caption and picture;
Decoding and displaying unit 52 is used for said image mixed character typeset captions code stream and said video image code stream are decoded back the demonstration.
Each part of the device of present embodiment corresponds respectively to each step of the method for previous embodiment, owing in preceding method embodiment, each step is specified, repeats no more at this.
The device of present embodiment has obtained the conference caption of image mixed character typeset through the code stream that receives is decoded, and does not need independent additional configuration film titler promptly to realize the function of overlapping text machine generation image mixed character typeset captions in video conference terminal.
The composition frame chart of a kind of video conference terminal that Fig. 6 provides for the embodiment of the invention; Please with reference to Fig. 6; The video conference terminal of present embodiment has comprised device embodiment illustrated in fig. 5 61 as receiving terminal; Owing in the embodiment of Fig. 4 and Fig. 5, this device 61 has been done to clearly demonstrate, has repeated no more at this.
Present embodiment is decoded to the code stream that receives through conference terminal, has obtained the conference caption of image mixed character typeset, does not need independent additional configuration film titler promptly to realize the function of overlapping text machine generation image mixed character typeset captions in video conference terminal.
A kind of method of in conference caption, inserting picture that Fig. 7 provides for the embodiment of the invention, this method are applied in the video conferencing system in the conference terminal as receiving terminal, and please with reference to Fig. 7, this method comprises:
701: the image mixed character typeset captions code stream that transmits on video image code stream that transmits on the reception data channel and the control channel, said image mixed character typeset captions comprise conference caption and picture;
702: the back stack of decoding respectively shows to said video image code stream and said image mixed character typeset captions code stream.
Present embodiment is corresponding to the back a kind of execution mode in the step 103 embodiment illustrated in fig. 1; Promptly image mixed character typeset captions code stream and video image code stream are encoded respectively as the conference terminal of transmitting terminal; Pass through the execution mode of control channel and data channel transmission more respectively; Present embodiment is after receiving the image mixed character typeset captions code stream that transmits on the video image code stream that transmits on the data channel and the control channel; Respectively it is decoded, then decoded video image and image mixed character typeset captions are superposeed back the demonstration, the image that shows has promptly comprised conference caption and the video image that inserts picture.
The method of present embodiment has obtained the conference caption of image mixed character typeset through the code stream that receives on the control channel is decoded, and does not need independent additional configuration film titler promptly to realize the function of overlapping text machine generation image mixed character typeset captions in video conference terminal.
A kind of device that in conference caption, inserts picture that Fig. 8 provides for the embodiment of the invention; Please with reference to Fig. 8, the device of present embodiment is used to realize aforementioned method embodiment illustrated in fig. 7, is applied to the video conference terminal as receiving terminal; Method corresponding embodiment illustrated in fig. 7, this device comprises:
Receiving element 81 is used to receive the image mixed character typeset captions code stream that transmits on the video image code stream that transmits on the data channel and the control channel, and said image mixed character typeset captions comprise conference caption and picture;
Decoding and displaying unit 82 is used for that the back stack of decoding respectively shows to said video image code stream and said image mixed character typeset captions code stream.
Each part of the device of present embodiment corresponds respectively to each step of the method for previous embodiment, owing in preceding method embodiment, each step is specified, repeats no more at this.
The device of present embodiment has obtained the conference caption of image mixed character typeset through the code stream that on control channel, receives is decoded, and does not need independent additional configuration film titler promptly to realize the function of overlapping text machine generation image mixed character typeset captions in video conference terminal.
The composition frame chart of a kind of video conference terminal that Fig. 9 provides for the embodiment of the invention; Please with reference to Fig. 9; The video conference terminal of present embodiment has comprised device embodiment illustrated in fig. 8 91 as receiving terminal; Owing in the embodiment of Fig. 7 and Fig. 8, this device 91 has been done to clearly demonstrate, has repeated no more at this.
Present embodiment is decoded to the code stream that receives from control channel through conference terminal; Obtain the conference caption of image mixed character typeset, do not needed independent additional configuration film titler promptly to realize the function of overlapping text machine generation image mixed character typeset captions in video conference terminal.
Above-described specific embodiment; The object of the invention, technical scheme and beneficial effect have been carried out further explain, and institute it should be understood that the above is merely specific embodiment of the present invention; And be not used in qualification protection scope of the present invention; All within spirit of the present invention and principle, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.