CN113542903A - Subtitle generating method and device supporting font size self-adaption - Google Patents
Subtitle generating method and device supporting font size self-adaption Download PDFInfo
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- CN113542903A CN113542903A CN202110804191.7A CN202110804191A CN113542903A CN 113542903 A CN113542903 A CN 113542903A CN 202110804191 A CN202110804191 A CN 202110804191A CN 113542903 A CN113542903 A CN 113542903A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/488—Data services, e.g. news ticker
- H04N21/4884—Data services, e.g. news ticker for displaying subtitles
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
- H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/485—End-user interface for client configuration
- H04N21/4858—End-user interface for client configuration for modifying screen layout parameters, e.g. fonts, size of the windows
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- User Interface Of Digital Computer (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The invention relates to the technical field of multimedia, in particular to a caption generating method and a device supporting font size self-adaptation.A off-screen caption picture is generated according to characters and font information input by a user and the size of a caption area in a display interface; the dynamic calculation of off-screen caption font size is as follows: 1. setting the default font size as F1, and calculating the width W1 of the converted off-screen caption by using F1 and font information; 2. setting the width of a subtitle area in a display interface as W, and calculating an estimated target character size F2 by using a formula F2-F1W/W1; 3. calculating the width W2 of the converted off-screen subtitles by using the F2 and the font information; 4. calculating a final character number F by using a formula F-F2 (1- (W2-W)/W); 5. and obtaining the off-screen caption picture stored in the memory. The off-screen caption word size is obtained by dynamic calculation, and the method has wide application range and high definition.
Description
Technical Field
The invention relates to the technical field of multimedia, in particular to a subtitle generating method and device supporting font size self-adaptation.
Background
With the continuous development of multimedia related technologies, many multimedia software such as live broadcast platforms and video production platforms have the function of adding and adjusting subtitles on a display interface. For example, in some live platforms, the anchor may add subtitles to illustrate the currently live content, enhancing the interaction with the audience. Meanwhile, the anchor can adjust and set the size of the added captions so as to be convenient for the audience to watch.
In the prior art, when a user adjusts the size of an added subtitle, the size is usually adjusted by dragging a subtitle area on a display interface with a mouse. The size of the subtitle in the subtitle area can be changed correspondingly with the change of the size of the subtitle area, and the subtitle can be adjusted to the size required by the user only by adjusting the subtitle area to the size required by the user. However, when the subtitle region is dragged, the subtitle in the subtitle region is actually enlarged in the form of a picture, and the font size of the subtitle itself is not changed, and cannot be generated adaptively.
Disclosure of Invention
It is an object of the present invention to provide a method and apparatus for generating subtitles that support font size adaptation that overcomes some or all of the deficiencies of the prior art.
According to the title generation method supporting font size self-adaptation, an off-screen title picture is generated according to characters and font information input by a user and the size of a title area in a display interface; the word size of the off-screen caption is obtained by dynamic calculation;
the dynamic calculation method of the word size used by the off-screen caption comprises the following steps:
1) setting the default font size as F1, calculating the width of the off-screen caption after the conversion by using the default font size F1 and the font information specified by the user, and setting the width as W1;
2) setting the width of a subtitle area in a display interface as W, and calculating an estimated target character size F2 by using a formula F2-F1W/W1;
3) calculating the width of the off-screen character caption after the conversion into the off-screen character caption by using the estimated target character size F2 and the character font information designated by the user, and setting the width as W2;
4) calculating a final character number F by using a formula F-F2 ═ (1- (W2-W)/W);
5) and obtaining the off-screen caption picture stored in the memory.
Preferably, the size of the finally generated off-screen caption is exactly matched with the size of the caption area in the display interface. Because the size of the finally generated off-screen caption is exactly matched with the size of the caption area in the display interface, the definition loss and the performance loss caused by zooming are avoided.
Preferably, after the off-screen caption picture is generated, the size of the off-screen caption picture is reduced to the size of the caption area of the display interface adjusted by the user, so as to obtain the final caption picture.
Preferably, the calculation method of the size of the subtitle area of the display interface adjusted by the user includes:
calculating the size of the subtitle area of the display interface adjusted by the user according to the distance moved by the user when the user executes the dragging operation, wherein the dragging operation of the user is used for adjusting the size of the subtitle area of the display interface.
Preferably, after the size is adjusted, the final caption picture is displayed in the caption area of the display interface adjusted by the user.
Preferably, in step 1), the text input by the user is first sent to the context of the device, and then the width W1 after the text is converted into the off-screen caption is calculated.
Preferably, in step 3), the characters input by the user are sent to the context of the device, and then the width W2 after being converted into the off-screen subtitle is calculated by using the estimated target font size F2 and the font information designated by the user.
Preferably, in step 5), the final font size F and the font information specified by the user are used to send the characters input by the user into the context of the device, so as to obtain the off-screen subtitle picture stored in the memory.
The invention also provides a caption generating device supporting font size self-adaptation, which adopts the caption generating method supporting font size self-adaptation.
According to the method and the device, the off-screen caption picture is generated according to the characters and font information input by the user and the size of the caption area in the display interface, and the font size of the off-screen caption is obtained by dynamic calculation, so that the font size of the caption can be generated in a self-adaptive manner, the application range is wide, and the definition is high.
Drawings
FIG. 1 is a flow chart of dynamic calculation of off-screen caption font size in embodiment 1;
Detailed Description
For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples. It is to be understood that the examples are illustrative of the invention and not limiting.
Example 1
As shown in fig. 1, the present embodiment provides a subtitle generating method supporting font size adaptation, which generates an off-screen subtitle picture according to characters and font information input by a user and a size of a subtitle region in a display interface; the word size of the off-screen caption is obtained by dynamic calculation;
the dynamic calculation method of the word size used by the off-screen caption comprises the following steps:
1) setting the default font size as F1, sending characters input by a user into the context of the equipment by using the default font size F1 and font information specified by the user, calculating the width of the characters after the characters are converted into the off-screen font, and setting the width as W1;
2) setting the width of a subtitle area in a display interface as W, and calculating an estimated target character size F2 by using a formula F2-F1W/W1;
3) sending characters input by a user into the context of the equipment by using the estimated target character size F2 and the font information designated by the user, calculating the width of the converted characters after the characters are turned into the off-screen character screen, and setting the width as W2;
4) calculating a final character number F by using a formula F-F2 ═ (1- (W2-W)/W);
5) and sending the characters input by the user into the context of the equipment by using the final character size F and the font information specified by the user to obtain the off-screen caption picture stored in the memory.
The size of the finally generated off-screen caption is exactly matched with the size of a caption area in the display interface. Because the size of the finally generated off-screen caption is exactly matched with the size of the caption area in the display interface, the definition loss and the performance loss caused by zooming are avoided. And after the off-screen caption picture is generated, reducing the size of the off-screen caption picture to the size of the caption area of the display interface adjusted by the user to obtain the final caption picture. The calculation method of the size of the caption area of the display interface adjusted by the user comprises the following steps: calculating the size of the subtitle area of the display interface adjusted by the user according to the distance moved by the user when the user executes the dragging operation, wherein the dragging operation of the user is used for adjusting the size of the subtitle area of the display interface. And after the size is adjusted, finally displaying the caption picture in the caption area of the display interface adjusted by the user.
The invention also provides a caption generating device supporting font size self-adaptation, which adopts the caption generating method supporting font size self-adaptation.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
Claims (9)
1. A subtitle generating method supporting font size self-adaptation is characterized in that: generating an off-screen caption picture according to characters and font information input by a user and the size of a caption area in a display interface; the word size of the off-screen caption is obtained by dynamic calculation;
the dynamic calculation method of the word size used by the off-screen caption comprises the following steps:
1) setting the default font size as F1, calculating the width of the off-screen caption after the conversion by using the default font size F1 and the font information specified by the user, and setting the width as W1;
2) setting the width of a subtitle area in a display interface as W, and calculating an estimated target character size F2 by using a formula F2-F1W/W1;
3) calculating the width of the off-screen character caption after the conversion into the off-screen character caption by using the estimated target character size F2 and the character font information designated by the user, and setting the width as W2;
4) calculating a final character number F by using a formula F-F2 ═ (1- (W2-W)/W);
5) and obtaining the off-screen caption picture stored in the memory.
2. The method for generating subtitles according to claim 1, wherein the method comprises the following steps: the size of the finally generated off-screen caption is exactly matched with the size of a caption area in the display interface.
3. The method for generating subtitles according to claim 2, wherein the method comprises the following steps: and after the off-screen caption picture is generated, reducing the size of the off-screen caption picture to the size of the caption area of the display interface adjusted by the user to obtain the final caption picture.
4. The method for generating subtitles according to claim 3, wherein the method comprises the steps of: the calculation method of the size of the caption area of the display interface adjusted by the user comprises the following steps:
calculating the size of the subtitle area of the display interface adjusted by the user according to the distance moved by the user when the user executes the dragging operation, wherein the dragging operation of the user is used for adjusting the size of the subtitle area of the display interface.
5. The method for generating subtitles according to claim 4, wherein the method comprises the following steps: and after the size is adjusted, finally displaying the caption picture in the caption area of the display interface adjusted by the user.
6. The method for generating subtitles according to claim 5, wherein the method comprises: in the step 1), firstly, characters input by a user are sent into the context of the equipment, and then the width W1 after the characters are converted into off-screen subtitles is calculated.
7. The method for generating subtitles according to claim 6, wherein the method comprises: in step 3), firstly, the characters input by the user are sent into the context of the equipment, and then the width W2 after the characters are converted into off-screen subtitles is calculated by using the estimated target character size F2 and the font information specified by the user.
8. The method for generating subtitles according to claim 7, wherein the method comprises: and 5) sending the characters input by the user into the context of the equipment by using the final character size F and the font information specified by the user to obtain the off-screen caption picture stored in the memory.
9. A subtitle generating apparatus supporting font size adaptation, characterized in that: which employs a method of subtitle generation supporting font size adaptation as claimed in any of claims 1-8.
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| CN202110804191.7A CN113542903A (en) | 2021-07-16 | 2021-07-16 | Subtitle generating method and device supporting font size self-adaption |
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| CN202110804191.7A CN113542903A (en) | 2021-07-16 | 2021-07-16 | Subtitle generating method and device supporting font size self-adaption |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115052126A (en) * | 2022-08-12 | 2022-09-13 | 深圳市稻兴实业有限公司 | Ultra-high definition video conference analysis management system based on artificial intelligence |
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Application publication date: 20211022 |