CN104063198A - Multi-screen synchronous subtitle overlaying method and equipment - Google Patents
Multi-screen synchronous subtitle overlaying method and equipment Download PDFInfo
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Abstract
The invention provides a multi-screen synchronous subtitle overlaying method and equipment. The method includes the steps of receiving subtitle display information and subtitle display control information which are input by a user, generating subtitle dot matrixes according to the subtitle display information, storing the subtitle dot matrixes, processing the subtitle dot matrixes according to the subtitle display control information, overlaying the processed subtitle dot matrixes and images to be displayed and conducing displaying. According to the multi-screen synchronous subtitle overlaying method and equipment, the subtitle overlaying function when a plurality of screens are spliced can be achieved, and cross-screen completely-synchronous smooth rolling can be achieved; a traditional LED strip or subtitle machine can be replaced, fusion display of subtitles and image contents can be achieved at low cost, and user experience is good.
Description
Technical Field
The invention relates to the field of image control, in particular to a spliced screen content display method and equipment.
Background
With the continuous development of Light Emitting Diode (LED) technology, LED display screens are increasingly used, and the content displayed by LEDs is more and more abundant.
At present, the images displayed by the LED display screens are various, wherein a mosaic screen has become a common display mode, however, when the images configured with the text superimposed by the multi-screen synchronous subtitles need to be displayed, an LED display screen may be further superimposed on the mosaic screen, specifically referring to fig. 1, and the LED display screen is specially used for displaying the rolling subtitles, so that the implementation cost is high, the displayed subtitles cannot be well fused with the images superimposed by the multi-screen synchronous subtitles, and the user experience is poor; the subtitle can also be connected with the spliced screen through a subtitle superimposing machine, specifically referring to fig. 2, the subtitle is superimposed on a video signal and is input to the spliced screen for display, even though the method can realize the fusion display of the subtitle and the image, the realization cost is high, and the subtitle is superimposed on the video signal and then is superimposed on the image signal, the resolution of the video signal is at most 1920 × 1080 pixels (pixel) at present, when the video signal is displayed on the spliced screen, the video signal needs to be amplified to be full screen, and thus the subtitle is stretched along with the video signal, so that the subtitle is displayed in a non-point-to-point manner, and the blurring is generated.
Disclosure of Invention
In view of the above, the present invention provides a method and an apparatus for displaying tiled screen content, which can implement fusion display of subtitles and image content at low cost.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method for multi-screen synchronous subtitle superposition, the method comprising:
receiving subtitle display information and subtitle display control information input by a user;
generating a subtitle dot matrix according to the subtitle display information and storing the subtitle dot matrix;
and processing the subtitle dot matrix according to the subtitle display control information, determining a subtitle dot matrix area displayed by each splicing screen, and displaying the determined subtitle dot matrix and the image to be displayed after superposition.
The subtitle display information comprises one or more of subtitle content, font and font size, and the subtitle display control information comprises one or more of a subtitle rolling mode, a rolling speed, subtitle color, background transparency and a subtitle display area.
Further, before processing the subtitle lattice according to the subtitle display control information, the method further includes:
and when the subtitle display control information comprises a subtitle rolling mode, carrying out corresponding offset on the subtitle dot matrix according to the subtitle rolling mode.
The method comprises the following steps of processing the subtitle dot matrix according to the subtitle display control information, and determining the subtitle dot matrix area displayed by each splicing screen, wherein the step of processing the subtitle dot matrix according to the subtitle display control information comprises the following steps:
when a user needs to display the subtitles on a full screen, determining the initial positions of respective multi-screen synchronous subtitle superposition subtitle dot matrixes according to the number of spliced screens forming the display screen, and dividing the subtitle dot matrixes to obtain the subtitle dot matrix area displayed by each spliced screen.
The step of displaying the determined subtitle lattice and the image to be displayed after superimposing comprises the following steps:
and superposing the subtitle dot matrix corresponding to the subtitle dot matrix area and the image of the display area corresponding to the subtitle dot matrix area, and then simultaneously displaying the images in the display area.
An apparatus for multi-screen synchronized subtitle superimposition, the apparatus comprising: the subtitle control module, the storage module, the superposition module and the display control module; wherein,
the subtitle control module is used for receiving subtitle display information and subtitle display control information input by a user and generating a subtitle dot matrix according to the subtitle display information;
the storage module is used for storing the subtitle dot matrix;
the superposition module is used for processing the subtitle dot matrix according to the subtitle display control information, determining a subtitle dot matrix area displayed by each splicing screen, and superposing the determined subtitle dot matrix and an image to be displayed;
and the display control module is used for displaying the image superimposed with the subtitle.
Further, the superimposing module is further configured to perform corresponding offset on the subtitle dot matrix according to the subtitle scrolling mode when the subtitle display control information includes the subtitle scrolling mode.
The superposition module is specifically used for determining the initial positions of respective multi-screen synchronous subtitle superposition subtitle dot matrixes according to the number of spliced screens forming a display screen when a user needs to display subtitles in a full screen mode, and dividing the subtitle dot matrixes to obtain the subtitle dot matrix area displayed by each spliced screen.
The superposition module is specifically used for superposing the subtitle lattice corresponding to the subtitle lattice area and the image of the display area corresponding to the subtitle lattice;
the display control module is specifically configured to display the images superimposed with the subtitles in the display area at the same time.
According to the multi-screen synchronous subtitle superposition method and the multi-screen synchronous subtitle superposition equipment, the subtitle dot matrix is generated and stored according to the received subtitle display information, the generated letter dot matrix and the image to be displayed are displayed after being superposed according to the received subtitle display control information, the subtitle superposition function during multi-screen splicing can be achieved, and cross-screen completely synchronous smooth rolling can be achieved; the whole caption dot matrix is sent to the superposition module, the superposition module divides the caption dot matrix according to the initial position, and the superposition module updates the superposition address according to the rolling mode and speed, so that the whole caption dot matrix only needs to be sent once, and the rolling smoothness is improved; meanwhile, the subtitle display information and the subtitle display control information can be set according to actual needs, the displayed subtitles and the images are completely integrated, and the user experience that the subtitles float on the images is obtained by setting the transparent background; the LED display screen can replace a traditional LED strip or a caption machine, fusion display of captions and image contents is achieved at low cost, and user experience is good.
Drawings
FIG. 1 is a schematic diagram of an implementation of a conventional multi-screen simultaneous subtitle superimposition;
FIG. 2 is a schematic diagram of another implementation manner of multi-screen synchronous subtitle superimposition in the prior art;
fig. 3 is a flowchart illustrating an implementation of a method for superimposing multiple-screen subtitles in synchronization according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a multi-screen synchronous subtitle superimposing apparatus according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a multi-screen synchronous subtitle superimposing apparatus according to an embodiment of the present invention;
fig. 6 is a schematic view of processing a subtitle lattice according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings by way of examples.
Fig. 3 illustrates a flow of a multi-screen synchronized subtitle superimposing method according to an embodiment of the present invention, and as shown in fig. 1, the method includes the following steps:
step 101, receiving subtitle display information and subtitle display control information input by a user;
specifically, in this step, the subtitle display information input by the user includes one or more of subtitle content, font, and font size, and the subtitle display control information input by the user includes one or more of a subtitle scrolling mode, a scrolling speed, a subtitle color, a background transparency, and a subtitle display area. The setting can be freely performed by the user according to actual needs.
102, generating a subtitle dot matrix according to subtitle display information and storing the subtitle dot matrix;
103, processing a subtitle dot matrix according to the subtitle display control information, determining a subtitle dot matrix area displayed by each splicing screen, and displaying the determined subtitle dot matrix and an image to be displayed after superposition;
specifically, when a user needs to display the subtitles in a full screen mode, determining the initial positions of respective multi-screen synchronous subtitle superposition subtitle dot matrixes according to the number of spliced screens forming a display screen, and dividing the subtitle dot matrixes to obtain the subtitle dot matrix area displayed by each spliced screen; and then, overlapping the subtitle dot matrix corresponding to the subtitle dot matrix area and the image of the display area corresponding to the subtitle dot matrix area, and simultaneously displaying the images in the display area.
Further, before step 103, the method may further include: and when the subtitle display control information comprises a subtitle rolling mode, correspondingly offsetting the subtitle dot matrix according to the subtitle rolling mode.
According to the multi-screen synchronous subtitle superposition method provided by the embodiment of the invention, the subtitle dot matrix is generated and stored according to the received subtitle display information, and the generated letter dot matrix and the image to be displayed are superposed and then displayed according to the received subtitle display control information, so that the subtitle superposition function during multi-screen splicing can be realized, and the completely synchronous smooth rolling across screens can be realized; the whole caption dot matrix is divided, and the superposition address is updated by the superposition module according to the rolling mode and the speed, so that the whole caption dot matrix only needs to be sent once, and the rolling smoothness is improved; meanwhile, the subtitle display information and the subtitle display control information can be set according to actual needs, the displayed subtitles and the images are completely integrated, and the user experience that the subtitles float on the images is obtained by setting the transparent background; the LED display screen can replace a traditional LED strip or a caption machine, fusion display of captions and image contents is achieved at low cost, and user experience is good.
In an embodiment of the present invention, further, an apparatus for superimposing multiple-screen synchronized subtitles is provided, where each functional module of the apparatus may be configured to execute a process of the embodiment of the method shown in fig. 3, and specifically refer to fig. 4, where the method includes: a caption control module 21, a storage module 22, a superposition module 23 and a display control module 24; wherein,
the subtitle control module 21 is configured to receive subtitle display information and subtitle display control information input by a user, and generate a subtitle dot matrix according to the subtitle display information;
the storage module 22 is used for storing the subtitle dot matrix;
the superposition module 23 is configured to process the subtitle dot matrix according to the subtitle display control information, determine a subtitle dot matrix region displayed by each tile of the mosaic screen, and superimpose the determined subtitle dot matrix with the image to be displayed;
and a display control module 24 for displaying the image superimposed with the subtitle.
Further, the subtitle control module 21 is specifically configured to receive subtitle display information input by a user, where the subtitle display information includes one or more of subtitle content, font, and font size, and the subtitle display control information input by the user includes one or more of a subtitle scrolling mode, a scrolling speed, a subtitle color, a background transparency, and a subtitle display area.
Further, the superimposing module 23 is further configured to perform corresponding offset on the subtitle lattice according to the subtitle scrolling mode when the subtitle display control information includes the subtitle scrolling mode.
The superimposing module 23 is specifically configured to, when a user needs to display a subtitle on a full screen, determine an initial position of a respective multi-screen synchronous subtitle superimposing subtitle lattice according to the number of spliced screens forming a display screen, and divide the subtitle lattice to obtain a subtitle lattice region displayed by each spliced screen.
The superimposing module 23 is specifically configured to superimpose the subtitle dot matrix corresponding to the subtitle dot matrix region and the image of the display region corresponding to the subtitle dot matrix;
the display control module 24 is specifically configured to simultaneously display the images superimposed with subtitles in the display area.
The multi-screen synchronous subtitle superposition equipment provided by the embodiment of the invention generates and stores a subtitle dot matrix according to the received subtitle display information, and displays the generated letter dot matrix and an image to be displayed after superposition according to the received subtitle display control information, so that the subtitle superposition function during multi-screen splicing can be realized, and the completely synchronous smooth rolling across screens can be realized; the whole caption dot matrix is sent to the superposition module, the superposition module divides the caption dot matrix according to the initial position, and the superposition module updates the superposition address according to the rolling mode and speed, so that the whole caption dot matrix only needs to be sent once, and the rolling smoothness is improved; meanwhile, the subtitle display information and the subtitle display control information can be set according to actual needs, the displayed subtitles and the images are completely integrated, and the user experience that the subtitles float on the images is obtained by setting the transparent background; the LED display screen can replace a traditional LED strip or a caption machine, fusion display of captions and image contents is achieved at low cost, and user experience is good.
The foregoing multi-screen synchronous subtitle superimposing method and apparatus provided by the embodiments of the present invention are further described in detail by specific embodiments below.
Fig. 5 is a schematic structural diagram of a multi-screen synchronized subtitle superimposing apparatus according to an embodiment of the present invention, and details of a multi-screen synchronized subtitle superimposing process disclosed in the embodiment of the present invention are described below with reference to fig. 5.
Referring to fig. 5, in this embodiment, the parameters of the tiled screens are 2 × 2 tiled (tiled screen 1-tiled screen 4), and the resolution of each tiled screen is 1920 × 1080 pixels, where the stacking module may be multiple according to the number of tiled screens, or may be one, and the setting of the display control module is the same, and fig. 5 is a schematic diagram of setting the stacking module and the display control module to multiple: the display control system comprises a superposition module 1-a superposition module 4, and a display control module 1-a display control module 4.
Step 1, the subtitle control module receives subtitle display information and subtitle display control information input by a user through a user interactive interface (GUI), and may specifically include: subtitle content, font size, scrolling mode, scrolling speed, subtitle color, background transparency, display area of subtitle, and the like
And 2, the subtitle control module dynamically generates a subtitle dot matrix required by the superposition module according to the subtitle content, the font size and the subtitle display area.
And 3, storing the generated subtitle dot matrix by the storage module.
And 4, simultaneously sending the subtitle dot matrixes stored by the storage module to the superposition modules 1 to 4 by the storage module, wherein the superposition modules, the display control module and the spliced screen are in one-to-one correspondence.
And 5, the subtitle control module sends subtitle display control information such as subtitle areas, scrolling speed, scrolling modes, subtitle colors, background transparency and the like to be displayed on each spliced screen to the corresponding superposition module.
And 6, each superposition module superposes the subtitle dot matrix of the corresponding area and the dynamic image to be displayed in the display memory together according to the received subtitle display control information and then sends the superimposed subtitle dot matrix and the dynamic image to the corresponding display control module.
And 7, each display control module displays the dynamic image superimposed with the subtitle on a corresponding splicing screen.
Here, the subtitle control module performs synchronous control on the plurality of overlay modules, so that the plurality of overlay modules start to display at the same time, and the subtitles are synchronous and smooth during scrolling.
The generation and the scrolling of the subtitle lattice control module are described by the following examples:
in the above embodiment, when the user needs a subtitle displayed in 2 × 2 full screen, and the subtitle is scrolled upwards;
referring to fig. 6, assuming that the pixel size of the entire subtitle lattice is 3840 columns × N (N > -2160) rows, the coordinates of the upper left corner is (0, 0), and the coordinates of the lower right corner is (3839, N-1), it should be understood that the number of rows of the subtitle lattice is equal to or greater than the number of pixel rows of the entire mosaic screen.
After the subtitle lattice is generated, the whole subtitle lattice can be simultaneously sent to the four superposition modules;
the display areas corresponding to each overlay module are different, so that the initial positions to be displayed by each overlay module in the subtitle dot matrix are different, the overlay modules 1 to 4 determine, through calculation, that the initial positions corresponding to each overlay module are position 1(0, 0), position 2(1920, 0), position 3(0, 1080) and position 4(1920, 1080), respectively, and the subtitle areas to be displayed by each overlay module are rectangular areas of 1920 × 1080.
Thus, after the above processing, the superimposition module uniformly divides the entire subtitle lattice into four 1920 × 1080 blocks, so as to correspond to four spliced screens 1 to 4 of 1920 × 1080 pixels.
When the caption needs to be rolled upwards for displaying, the superposition module calculates the number of lines M which need to be rolled when each frame is refreshed according to the rolling speed, and when the next frame is displayed, the superposition module shifts the initial address of the superposition module downwards by M lines in the whole caption dot matrix, so that the caption displayed by the next frame is equivalent to the caption which is rolled upwards by M lines. When the superposition module 1 to the superposition module 4 simultaneously perform the above-mentioned offset operation, the entire subtitle can be scrolled upwards for display.
It should be understood that when the user sets to scroll and display the subtitles to the left, the generated subtitle dot matrix pixel size is N (N > -3840) rows x2160, and when each frame is refreshed, the superimposing module only needs to increase or decrease the display position by a plurality of rows, and the principle is scrolled upwards in the same direction, which is not described herein again.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for multi-screen synchronous subtitle superposition, comprising:
receiving subtitle display information and subtitle display control information input by a user;
generating a subtitle dot matrix according to the subtitle display information and storing the subtitle dot matrix;
and processing the subtitle dot matrix according to the subtitle display control information, determining a subtitle dot matrix area displayed by each splicing screen, and displaying the determined subtitle dot matrix and the image to be displayed after superposition.
2. The method of claim 1, wherein the subtitle display information comprises one or more of subtitle content, font size, and the subtitle display control information comprises one or more of subtitle scrolling mode, scrolling speed, subtitle color, background transparency, and subtitle display area.
3. The method of claim 1, wherein prior to processing the subtitle lattice in accordance with the subtitle display control information, the method further comprises:
and when the subtitle display control information comprises a subtitle rolling mode, carrying out corresponding offset on the subtitle dot matrix according to the subtitle rolling mode.
4. The method according to any one of claims 1 to 3, wherein the step of processing the subtitle lattice according to the subtitle display control information to determine the subtitle lattice region displayed by each tile of the mosaic screen comprises:
when a user needs to display the subtitles on a full screen, determining the initial positions of respective multi-screen synchronous subtitle superposition subtitle dot matrixes according to the number of spliced screens forming the display screen, and dividing the subtitle dot matrixes to obtain the subtitle dot matrix area displayed by each spliced screen.
5. The method according to claim 4, wherein the step of displaying the determined subtitle lattice superimposed with the image to be displayed comprises:
and superposing the subtitle dot matrix corresponding to the subtitle dot matrix area and the image of the display area corresponding to the subtitle dot matrix area, and then simultaneously displaying the images in the display area.
6. An apparatus for multi-screen synchronized subtitle superimposition, the apparatus comprising: the subtitle control module, the storage module, the superposition module and the display control module; wherein,
the subtitle control module is used for receiving subtitle display information and subtitle display control information input by a user and generating a subtitle dot matrix according to the subtitle display information;
the storage module is used for storing the subtitle dot matrix;
the superposition module is used for processing the subtitle dot matrix according to the subtitle display control information, determining a subtitle dot matrix area displayed by each splicing screen, and superposing the determined subtitle dot matrix and an image to be displayed;
and the display control module is used for displaying the image superimposed with the subtitle.
7. The apparatus of claim 6, wherein the subtitle display information comprises one or more of subtitle content, font size, and the subtitle display control information comprises one or more of subtitle scrolling mode, scrolling speed, subtitle color, background transparency, and subtitle display area.
8. The device according to claim 6, wherein the superimposing module is further configured to shift the subtitle lattice according to the subtitle scrolling manner when the subtitle display control information includes the subtitle scrolling manner.
9. The device according to any one of claims 6 to 8, wherein the superimposition module is specifically configured to, when a user needs to display subtitles on a full screen, determine starting positions of respective multi-screen synchronous subtitle superimposition subtitle dot matrixes according to the number of the mosaic screens forming the display screen, and divide the subtitle dot matrixes to obtain a subtitle dot matrix area displayed by each mosaic screen.
10. The device according to claim 9, wherein the superimposing module is specifically configured to superimpose the subtitle lattice corresponding to the subtitle lattice region and the image of the display region corresponding to the subtitle lattice;
the display control module is specifically configured to display the images superimposed with the subtitles in the display area at the same time.
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| CN104363521A (en) * | 2014-11-03 | 2015-02-18 | 传线网络科技（上海）有限公司 | Double-screen or multi-screen tiled display method and system |
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| CN104935840A (en) * | 2015-06-10 | 2015-09-23 | 深圳市创维群欣安防科技有限公司 | Subtitle rolling display method of splicing display screen and system |
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