CN101895694A - Subtitle superimposition method and device - Google Patents
Subtitle superimposition method and device Download PDFInfo
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- CN101895694A CN101895694A CN2010102391285A CN201010239128A CN101895694A CN 101895694 A CN101895694 A CN 101895694A CN 2010102391285 A CN2010102391285 A CN 2010102391285A CN 201010239128 A CN201010239128 A CN 201010239128A CN 101895694 A CN101895694 A CN 101895694A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
- H04N7/147—Communication arrangements, e.g. identifying the communication as a video-communication, intermediate storage of the signals
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Abstract
The invention discloses a subtitle superimposition method, which comprises the following steps of: determining image data of a subtitle to be superimposed according to the content and the attribute of the subtitle which is input by a user; generating the subtitle to be superimposed by using the image data of the subtitle to be superimposed; generating an analog subtitle according to the subtitle to be superimposed; generating an analog image background according to an actual image background, and superimposing the analog subtitle to the analog image background to determine the effect parameter value of an analog image generated by superimposing; and if the effect parameter value is more than a preset threshold value, superimposing the subtitle to be superimposed to the actual image background. The invention also discloses a subtitle superimposition device. The method provided by the invention can save resources and improve the subtitle superimposition efficiency.
Description
Technical field
The present invention relates to the video conferencing field in the communication technical field, especially relate to caption superposition method and device in this field.
Background technology
Video conferencing utilizes communication network, by camera, Mike, terminal equipment the meeting room in be separated by two places or several places is coupled together, transmit various images, voice signal, make the interchange that the people's who attends a meeting interchange can the image planes opposite the same, improved the facility that the strange land is linked up.
Along with the continuous maturation of mechanics of communication, the function of video conferencing is also more and more, and using method more is close to user's demand.Caption function is one of requisite function of providing of each Great Council television manufacturer, and caption information can be simple information such as meeting place name, conference management, chairman's terminal, also can be complex informations such as conference content summary.
Existing caption function is also referred to as the subtitle superposition function, send caption information to be superimposed by master control to the captions generation module, as caption content, captions color, display position, demonstration size, subtitle position, roll mode, transparency etc., the captions generation module takes out the dot matrix of corresponding word from character library according to the caption content in the caption information, subtitle position, font size, generate subtitle bitmap according to captions and background color again, with being superimposed upon on the local terminal or distal view picture of camera picked-up after the subtitle bitmap processing, show by display terminal.Existing caption function has significant limitation, for example, have only by after video superimpose, just showing for the display effect of captions in true terminal, if the effect that shows is undesirable,, position attractive in appearance inadequately as font color takes over or the like, can only go stack to show in this case again, not only waste resource but also influence efficient.
Summary of the invention
The embodiment of the invention provides a kind of caption superposition method, in order to save resource, improves subtitle superposition efficient, comprising:
According to the caption content and the captions attribute of user's input, determine the view data of captions to be superimposed;
Utilize the view data of described captions to be superimposed to generate captions to be superimposed;
Generate the simulation captions according to described captions to be superimposed, generate the analog image background according to actual image background, and with described simulation subtitle superposition in described analog image background, determine the effect parameter value of the analog image that stack generates;
When described effect parameter value during greater than first predetermined threshold value, with described subtitle superposition to be superimposed in actual image background.
The embodiment of the invention also provides a kind of subtitle superposition device, in order to save resource, improves subtitle superposition efficient, comprising:
First determination module is used for caption content and captions attribute according to user's input, determines the view data of captions to be superimposed;
Generation module is used to utilize the view data of described captions to be superimposed to generate captions to be superimposed; Generate the simulation captions according to described captions to be superimposed, generate the analog image background according to actual image background;
Second determination module is used for described simulation subtitle superposition to described analog image background, determines the effect parameter value of the analog image that stack generates;
Laminating module is used for when described effect parameter value during greater than first predetermined threshold value, with described subtitle superposition to be superimposed in actual image background.
In embodiments of the present invention, caption content and captions attribute according to user's input, determine the view data of captions to be superimposed, utilize the view data of captions to be superimposed to generate captions to be superimposed, generate the simulation captions according to captions to be superimposed, generate the analog image background according to actual image background, and will simulate subtitle superposition in the analog image background, determine the effect parameter value of the analog image that stack generates, when effect parameter value during greater than first predetermined threshold value, with subtitle superposition to be superimposed in actual image background.The caption superposition method that adopts the embodiment of the invention to provide, can carry out preview to the image effect of captions to be superimposed, only at the image effect parameter value of the captions to be superimposed of judging demonstration during greater than first predetermined threshold value, just can be in image background with subtitle superposition to be superimposed, with respect to prior art mention without preview with regard to the stack technique for displaying with regard to, if it is attractive in appearance inadequately font color to occur, position problem such as take back or take over, cause the image effect parameter value to be not more than first predetermined threshold value, then can not go image overlay in image, thereby saved resource, improved subtitle superposition efficient.
Description of drawings
The applied environment schematic diagram of the caption superposition method that Fig. 1 provides for the embodiment of the invention;
The flow chart of the caption superposition method that Fig. 2 provides for the embodiment of the invention;
The flow chart of the view data of the captions that the generation that Fig. 3 provides for the embodiment of the invention is to be superimposed;
The particular flow sheet of the embodiment of the caption superposition method that Fig. 4 provides for the embodiment of the invention;
First kind of structural representation of the subtitle superposition device that Fig. 5 provides for the embodiment of the invention;
Second kind of structural representation of the subtitle superposition device that Fig. 6 provides for the embodiment of the invention;
The structural representation of first determination module that Fig. 7 provides for the embodiment of the invention;
The third structural representation of the subtitle superposition device that Fig. 8 provides for the embodiment of the invention.
Embodiment
In the prior art, caption function can only be to the demonstration that superposes of simple caption information such as meeting place name, can't show for the vertical scrolling of complicated captions, special efficacy font etc., limit the captions content displayed to a great extent, can't reach the rich of captions display effect; And, have only by just showing in true terminal after video superimpose for the display effect of captions, if the effect that shows is undesirable,, position attractive in appearance inadequately as font color takes over or the like, can only go stack to show in this case again, not only waste resource but also influence efficient.For addressing the above problem, the embodiment of the invention provides a kind of caption superposition method, concrete application scenarios as shown in Figure 1, comprise processor, MCU (Multipoint Control Unit, multipoint control unit), and a plurality of terminals, processor links with a plurality of terminal rooms foundation with MCU, MCU and is connected.The handling process of a kind of caption superposition method that the embodiment of the invention provides comprises as shown in Figure 2:
Whether automatically flow process as shown in Figure 2, caption content and captions attribute can comprise font, font size, font color, background color, alignment thereof, line feed, whether horizontal rolling, vertical scrolling or the like whether.
Flow process as shown in Figure 2, step 204 when the effect parameter value is not more than first predetermined threshold value, repeats following operation when implementing, until the effect parameter value greater than first predetermined threshold value:
Adjust the parameter value of captions attribute, captions attribute according to caption content and adjustment, determine the view data of captions to be superimposed, utilize the view data of captions to be superimposed to generate captions to be superimposed, generate the simulation captions according to captions to be superimposed, generate the analog image background according to actual image background, and analogue data is added in the analog image background, determine the effect parameter value of the analog image that stack generates, when effect parameter value during greater than first predetermined threshold value, with subtitle superposition to be superimposed in actual image background.
During enforcement, the effect parameter value can be judged by weighted value, promptly, the image effect of captions to be superimposed is provided with a plurality of parameters, each parameter has its corresponding weight coefficient, the product of the parameter value that obtains each parameter and corresponding weighting system obtains weighted value, promptly current effect parameter value after the addition.Certainly, when implementing, also can utilize additive method to obtain the effect parameter value, for example, get contrast, perhaps, get number of colors as the effect parameter value as the effect parameter value, or the like.
Wherein, step 201 according to the caption content and the captions attribute of user's input, generates the view data of captions to be superimposed when implementing, and concrete handling process comprises as shown in Figure 3:
Flow process as shown in Figure 3, step 302 is when implementing, the complexity parameter value can be judged by the weighted value of caption content and captions attribute, promptly, corresponding caption content and captions attribute are provided with a plurality of parameters, and each parameter has its corresponding weight coefficient, the product of the parameter value that obtains each parameter and corresponding weighting system, obtain weighted value after the addition, i.e. the complexity parameter value.Certainly, when implementing, also can utilize additive method to obtain the complexity parameter value, for example, the parameter value of getting certain parameter wherein is as the complexity parameter value, and perhaps, the weighted value of getting the parameter value of certain several parameter wherein is as the image effect parameter value, or the like.
Hereinafter describe for convenient, the captions that the complexity parameter can be surpassed second predetermined threshold value are designated complicated captions, and the captions that the complexity parameter do not surpassed second predetermined threshold value are designated simple captions.
During enforcement, after subtitle superposition to be superimposed is in actual image background, also comprise: the captions of controlling in the actual image background that is added to roll.
When with the skew of the captions occurrence positions of image overlay, need to upgrade the view data of captions to be superimposed.Concrete, for example, when captions take place to roll, need to upgrade the view data of captions to be superimposed, to adapt to the position after the rolling.
More excellent, during enforcement, periodically judge and the whether occurrence positions skew of the captions of image overlay, be the continuity that guarantees captions, improve user experience and impression.
Flow process as shown in Figure 2, step 203 utilize preset proportion to generate the simulation captions according to captions to be superimposed when implementing, and utilize identical preset proportion to generate the analog image background according to actual image background.The scaled down simulation, preview effect and actual Overlay similarity height, the preview effect is better.
Now describe with a specific embodiment, in this example, the caption superposition method that the embodiment of the invention is provided is applied to application server, browser, web server, captions module, Subscriber Interface Module SIM and video processing module, and concrete function and handling process are as follows:
Application server: the captions of being responsible for obtaining user's input from Subscriber Interface Module SIM, create browser, visit the web page of captions, obtain GUI (the Graphical User Interface of browser then, graphic user interface) data send to video processing module;
Browser: the URL address of the page that the needs that the reception application server sends are opened, to the web server requests web page;
Web server: obtain the caption content and the captions attribute relevant information of captions to be superimposed from application server, dynamically generate the web page;
Captions module: the message bit pattern of being responsible for from vector font library, extracting simple captions;
Subscriber Interface Module SIM: be responsible for the captions input, import and preview captions effect;
Video processing module: be responsible for gui data with captions and be added in the video code flow of terminal;
Concrete implementing procedure comprises as shown in Figure 4:
Whether the image effect parameter value of step 406, the captions that judge to show greater than first predetermined threshold value, if not, and execution in step 407, if, execution in step 408;
Step 407, adjust the parameter value of captions attribute, until the image effect parameter value of the captions to be superimposed that show greater than first predetermined threshold value;
Certainly, when implementing, can realize the rolling of captions, when captions rolling, obtain up-to-date captions interface data, and send data to application server by the timer monitoring of browser inside.
Based on same inventive concept, the embodiment of the invention also provides a kind of subtitle superposition device, and concrete structure comprises as shown in Figure 5:
In one embodiment, as shown in Figure 6, the subtitle superposition device can also comprise:
Adjusting module 602 is used to adjust the parameter value of captions attribute.
In one embodiment, as shown in Figure 7, first determination module 501 can specifically comprise:
Determine submodule 701, be used for caption content and captions attribute, determine the complexity parameter of captions to be generated according to user's input;
First generates submodule 702, is used for when the complexity parameter surpasses second predetermined threshold value caption content and captions attribute being sent to network web server, and notice web server by utilizing caption content and captions attribute dynamically generate the web page; And, utilize browser to receive and the parsing web page, generate the view data of captions to be superimposed;
Second generates submodule 703, is used for when the complexity parameter does not surpass second predetermined threshold value, utilizes caption content and captions attribute to extract subtitle bitmap from vector font library and constitutes true color image, generates the view data of captions to be superimposed.
In one embodiment, structure as shown in Figure 8, the subtitle superposition device can also comprise:
In one embodiment, generation module 502 can specifically be used for:
Utilize preset proportion to generate the simulation captions according to captions to be superimposed;
Utilize identical preset proportion to generate the analog image background according to actual image background.
In embodiments of the present invention, caption content and captions attribute according to user's input, determine the view data of captions to be superimposed, utilize the view data of captions to be superimposed to generate captions to be superimposed, generate the simulation captions according to captions to be superimposed, generate the analog image background according to actual image background, and will simulate subtitle superposition in the analog image background, determine the effect parameter value of the analog image that stack generates, when effect parameter value during greater than first predetermined threshold value, with subtitle superposition to be superimposed in actual image background.The caption superposition method that adopts the embodiment of the invention to provide, can carry out preview to the image effect of captions to be superimposed, only at the image effect parameter value of the captions to be superimposed of judging demonstration during greater than first predetermined threshold value, just can be in image background with subtitle superposition to be superimposed, with respect to prior art mention without preview with regard to the stack technique for displaying with regard to, if it is attractive in appearance inadequately font color to occur, position problem such as take back or take over, cause the image effect parameter value to be not more than first predetermined threshold value, then can not go image overlay in image, thereby saved resource, improved subtitle superposition efficient.
Further, for guaranteeing the practicality of captions, when the image effect parameter value that shows captions to be superimposed is not more than first predetermined threshold value, can not abandon using captions, reselect subtitle superposition, but the parameter value of adjustment captions attribute greater than first predetermined threshold value, is saved resource and efficient until the effect parameter value.
Further, when with the skew of the captions occurrence positions of image overlay, upgrade the view data of captions to be superimposed, make captions be not limited only to the demonstration that effectively superposes of simple caption information such as meeting place name, all can show for the vertical scrolling of complicated captions, special efficacy font etc., reach the rich of captions display effect.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (11)
1. a caption superposition method is characterized in that, comprising:
According to the caption content and the captions attribute of user's input, determine the view data of captions to be superimposed;
Utilize the view data of described captions to be superimposed to generate captions to be superimposed;
Generate the simulation captions according to described captions to be superimposed, generate the analog image background according to actual image background, and with described simulation subtitle superposition in described analog image background, determine the effect parameter value of the analog image that stack generates;
When described effect parameter value during greater than first predetermined threshold value, with described subtitle superposition to be superimposed in actual image background.
2. the method for claim 1 is characterized in that, also comprises:
When described effect parameter value is not more than described first predetermined threshold value, repeat following operation, until described effect parameter value greater than described first predetermined threshold value:
Adjust the parameter value of described captions attribute;
According to the captions attribute of described caption content and adjustment, determine the view data of captions to be superimposed;
Utilize the view data of described captions to be superimposed to generate captions to be superimposed;
Generate the simulation captions according to described captions to be superimposed, generate the analog image background, and described analogue data is added in the described analog image background, determine the effect parameter value of the analog image that stack generates according to actual image background;
When described effect parameter value during greater than first predetermined threshold value, with described subtitle superposition to be superimposed in actual image background.
3. the method for claim 1 is characterized in that, according to the caption content and the captions attribute of user's input, generates the view data of captions to be superimposed, specifically comprises:
According to the caption content and the captions attribute of user's input, determine the complexity parameter of captions to be generated;
When described complexity parameter surpasses second predetermined threshold value, caption content and captions attribute are sent to network web server, notify described caption content of described web server by utilizing and captions attribute dynamically to generate the web page; And, utilize the browser reception and resolve the described web page, generate the view data of captions to be superimposed;
When described complexity parameter surpasses described second predetermined threshold value, utilize described caption content and captions attribute from vector font library, to extract subtitle bitmap formation true color image, generate the view data of captions to be superimposed.
4. as each described method of claim 1 to 3, it is characterized in that, after described subtitle superposition to be superimposed is in actual image background, also comprise:
The captions of controlling in the actual image background that is added to roll.
5. as each described method of claim 1 to 3, it is characterized in that described captions attribute comprises following any one or multinomial combination:
Font, font size, font color, background color, alignment thereof, line feed automatically, horizontal rolling, vertical scrolling.
6. as each described method of claim 1 to 3, it is characterized in that, generate the simulation captions, generate the analog image background, specifically comprise according to actual image background according to described captions to be superimposed:
Utilize preset proportion to generate described simulation captions according to described captions to be superimposed;
Utilize identical preset proportion to generate described analog image background according to described actual image background.
7. a subtitle superposition device is characterized in that, comprising:
First determination module is used for caption content and captions attribute according to user's input, determines the view data of captions to be superimposed;
Generation module is used to utilize the view data of described captions to be superimposed to generate captions to be superimposed; Generate the simulation captions according to described captions to be superimposed, generate the analog image background according to actual image background;
Second determination module is used for described simulation subtitle superposition to described analog image background, determines the effect parameter value of the analog image that stack generates;
Laminating module is used for when described effect parameter value during greater than first predetermined threshold value, with described subtitle superposition to be superimposed in actual image background.
8. device as claimed in claim 7 is characterized in that, also comprises:
Judge module is used for triggering adjusting module, first determination module, generation module and second determination module when described effect parameter value is not more than described first predetermined threshold value; And, when described effect parameter value during, trigger laminating module greater than described first predetermined threshold value:
Adjusting module is used to adjust the parameter value of described captions attribute.
9. device as claimed in claim 7 is characterized in that, described first determination module specifically comprises:
Determine submodule, be used for caption content and captions attribute, determine the complexity parameter of captions to be generated according to user's input;
First generates submodule, is used for when described complexity parameter surpasses second predetermined threshold value caption content and captions attribute being sent to network web server, notifies described caption content of described web server by utilizing and captions attribute dynamically to generate the web page; And, utilize the browser reception and resolve the described web page, generate the view data of captions to be superimposed;
Second generates submodule, is used for utilizing described caption content and captions attribute to extract subtitle bitmap formation true color image from vector font library when described complexity parameter surpasses described second predetermined threshold value, generates the view data of captions to be superimposed.
10. as each described device of claim 7 to 9, it is characterized in that, also comprise:
Control module is used for controlling the be added to captions of actual image background and rolls.
11., it is characterized in that described generation module specifically is used for as each described device of claim 7 to 9:
Utilize preset proportion to generate described simulation captions according to described captions to be superimposed;
Utilize identical preset proportion to generate described analog image background according to described actual image background.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102391285A CN101895694A (en) | 2010-07-23 | 2010-07-23 | Subtitle superimposition method and device |
| PCT/CN2011/075578 WO2012010018A1 (en) | 2010-07-23 | 2011-06-10 | Subtitle superimposition method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102391285A CN101895694A (en) | 2010-07-23 | 2010-07-23 | Subtitle superimposition method and device |
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| CN101895694A true CN101895694A (en) | 2010-11-24 |
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| CN2010102391285A Pending CN101895694A (en) | 2010-07-23 | 2010-07-23 | Subtitle superimposition method and device |
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| WO (1) | WO2012010018A1 (en) |
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| WO2012010018A1 (en) * | 2010-07-23 | 2012-01-26 | 中兴通讯股份有限公司 | Subtitle superimposition method and device |
| CN103517020A (en) * | 2012-06-29 | 2014-01-15 | 联想(北京)有限公司 | Data processing method and device and electronic equipment |
| CN107038734A (en) * | 2016-11-23 | 2017-08-11 | 浙江工业大学 | A kind of method of imaging importing text for Windows systems |
| WO2017162010A1 (en) * | 2016-03-21 | 2017-09-28 | 中兴通讯股份有限公司 | Method and apparatus for realizing caption processing |
| CN107959817A (en) * | 2016-10-17 | 2018-04-24 | 北京视联动力国际信息技术有限公司 | A kind of caption presentation method and device |
| CN107995440A (en) * | 2017-12-13 | 2018-05-04 | 北京奇虎科技有限公司 | A kind of video caption textures generation method and device |
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| WO2012010018A1 (en) | 2012-01-26 |
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