CN102739975B - A kind of method and system that dynamic two-dimensional caption is realized by data array - Google Patents

Abstract

The invention discloses a method and system for realizing dynamic two-dimensional subtitles through a data array, and mainly relates to the production and processing of subtitle special effects in the field of radio and television program production and broadcasting. The method includes: 1) determining the subtitle window resolution ; 2) set up the system processing array unit according to the subtitle window resolution, and record the unit assignment corresponding to each frame in the special effect process in the unit, and become the special effect data array; 3) set up the system special effect data array with the frame variable as the key word Unit database; 4) Read the database sequentially in frame order. The system includes: a subtitle window information reading unit, a special effect data array generating unit, a special effect data array unit database building unit, and a frame reading unit. Subtitle window files can be set more flexibly; through the establishment of special effect data arrays, the actual pixel attribute changes in the subtitle window can be recorded, and the establishment of the corresponding database can be completed. For the set subtitle window, different Calculate the assignment. A duty cycle optimization method is provided, so that the pixels not assigned in the subtitle window are separated from the overall database and assigned uniformly, thereby reducing the number of pixels assigned in the actual subtitle window.

Description

A method and system for realizing dynamic two-dimensional subtitles through data array

technical field

The invention relates to the production and broadcasting of program subtitles and related technical fields, in particular to a method and system for realizing dynamic two-dimensional subtitles through data arrays.

Background technique

In the existing program production and broadcasting and related technical fields, in the process of program material production, in order to better express the text, a large number of subtitles are required to be synthesized, especially in the production and playback of large-scale 3D films and materials. In order to obtain better effects, it is often necessary to insert special effects into subtitles. With the continuous improvement of special effects requirements, 3D effect subtitle special effects have appeared one after another. In the process of realizing 3D subtitle special effects, a large amount of data needs to be calculated. And usually will carry out a large number of calculations with the help of the GPU of the graphic display card, in order to obtain high-quality pictures, the processing speed of graphics operations, because the calculation will involve calling the GPU function, so the hardware has higher requirements. In the prior art, the subtitle machine is in In the production and playback process of 3D subtitle special effects, it is necessary to provide a better hardware and software environment, and the processing speed of the processing material is limited by the GPU processing capability, and the same requirement also exists during playback. In the process of 3D subtitle synthesis, because the processing There are a large number of image image files, so the files require a large storage space and cache space.

Especially in the process of subtitle deformation animation production, because each frame needs to be calculated according to the frame playback sequence, the calculation amount is increased, especially when the resolution requirement is high, the problem is particularly prominent.

In view of the above situation, in the process of realizing the present invention, the inventor finds that there are at least the following problems in the prior art:

In the production of 3D subtitle deformation, large-capacity storage space and fast running speed are required in the synthesis process, so the requirements for graphics card and GPU are relatively high, and the system is wasted in the process of simple special effect synthesis At the same time, there are many restrictions on the playback device such as operating speed and processing power, which limits the production and use of 3D subtitle deformation effects.

At the same time, in the existing subtitle deformation animation processing process, the amount of calculation is directly related to the resolution of the subtitle window. In the process of high-resolution and large-area subtitle image processing, a large amount of system resources will be occupied, and the calculation speed will cause problems. It takes a long time to synthesize subtitles, which cannot meet the needs.

Contents of the invention

In view of the deficiencies in the prior art and the technical problems to be solved by the present invention, the present invention provides a method and system for realizing dynamic two-dimensional subtitles through data arrays, which are used in the production process of subtitle deformation and special effects for 3D subtitles by a subtitle machine. and its special effects are being generated and played.

A method for realizing dynamic two-dimensional subtitles through a data array, the steps specifically include: 1) determining the subtitle window resolution; 2) establishing a system processing array unit according to the subtitle window resolution, and recording the special effect process in the unit The unit assignment corresponding to each frame becomes the special effect data array; 3) The system special effect data array unit database is established with the frame variable as the key; 4) The database is sequentially read in order of the frame.

Preferably, the specific steps in the step 1) include: 11) obtaining the basic size parameter of the subtitle window, and obtaining the user preset resolution; 12) obtaining the maximum resolution through the basic size parameter of the subtitle window; 13) Determine whether the user preset resolution is greater than the maximum resolution, if so, determine the maximum resolution as the subtitle window resolution, otherwise, determine the subtitle window resolution according to the user preset resolution.

Preferably, the basic size parameters include: anamorphic subtitle window length value X ₁ , anamorphic subtitle window width value Y ₁ ;

Preferably, the special effect data array includes at least: special effect name and frame variable information.

Preferably, the specific steps in the step 2) also include: 2A) duty cycle optimization;

Preferably, the specific steps of optimizing the duty cycle include: 2A1) uniformly assigning values to the sequence units in the special effect data array that have no attribute changes; 2A2) separately establishing a duty cycle optimization database for the above-mentioned uniformly assigning units.

Preferably, the step 4) may further include: firstly, uniformly assign values to the duty cycle optimization database.

The invention provides a system for realizing dynamic two-dimensional subtitles through a data array, which specifically includes: a subtitle window information reading unit, a special effect data array generation unit, a special effect data array unit database establishment unit, and a frame reading unit. The subtitle window information reading unit is used to obtain and determine the resolution of the subtitle window, and the special effect data array generation unit is used to establish a system processing array unit according to the subtitle window resolution, and record the special effect data in each frame in the unit. The corresponding unit assignment becomes a special effect data array, and the special effect data array unit database establishment unit is used to establish the system special effect data array unit database with the frame variable as a key.

Wherein, the frame reading unit is used for sequentially reading the database in frames.

As can be seen from the above technical solutions, the present invention has the following advantages:

First of all, the present invention can provide users with the option to set the resolution, and can more flexibly set the subtitle window files of the same size and resolution;

Secondly, the present invention records the changes of pixel attributes in the actual subtitle window by establishing a special effect data array, thereby completing the establishment of the corresponding database, and can realize non-calculation assignment for the set subtitle window.

Finally, the present invention provides a duty cycle optimization method, so that the pixels not assigned in the subtitle window are separated from the overall database and assigned uniformly, thereby reducing the number of assigned pixels in the actual subtitle window.

Description of drawings

Fig. 1 is a schematic diagram of a method for realizing dynamic two-dimensional subtitles through a data array in the present invention;

FIG. 2 is a schematic diagram of a system for realizing dynamic two-dimensional subtitles through data arrays according to the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on this The embodiments in the invention, and all other embodiments obtained by persons of ordinary skill in the art without creative effort, all belong to the scope of protection of the present invention.

Embodiment one:

Please refer to FIG. 1, the first embodiment of the method of the present invention, a method for realizing dynamic two-dimensional subtitles through data arrays:

First, determine the resolution of the subtitle window, the specific method is: obtain the basic size parameters of the subtitle window, wherein, the length value of the deformed subtitle window is X1, and the value of the width of the deformed subtitle window is Y1;

And obtain the user's preset resolution, and obtain the maximum resolution by the basic size parameter of the subtitle window; thereby, judge whether the user's preset resolution is greater than the maximum resolution, if so, determine that the maximum resolution is the subtitle window resolution , otherwise, determine the subtitle window resolution according to the user preset resolution.

Afterwards, according to the subtitle window resolution, a system processing array unit is established, and the unit assignment corresponding to each frame in the special effect process is recorded in the unit, which becomes a special effect data array; special effect name, frame variable information. And the duty cycle optimization can be performed; the specific process is to uniformly assign values to the array units without attribute changes in the special effect data array, and separately establish a duty cycle optimization database for the above-mentioned uniform assignment units after the assignment.

Finally, the system special effect data array unit database is established with the frame variable as the keyword. When rendering special effects, the database can be read sequentially in the order of frames. Than optimize the database uniform assignment.

Embodiment two:

Please refer to Figure 2, the second embodiment of the method of the present invention, the present invention provides a system for realizing dynamic two-dimensional subtitles through data arrays, which specifically includes: subtitle window information reading unit, special effect data array generation unit, special effect data array unit database Build unit, frame read unit. The subtitle window information reading unit is used to obtain and determine the resolution of the subtitle window, and the special effect data array generation unit is used to establish a system processing array unit according to the subtitle window resolution, and record the special effect data in each frame in the unit. The corresponding unit assignment becomes a special effect data array, and the special effect data array unit database establishment unit is used to establish the system special effect data array unit database with the frame variable as a key.

Wherein, the frame reading unit is used for sequentially reading the database in frame order.

Through the above description of the embodiments, those skilled in the art can clearly understand that the present invention can be realized by hardware, or by software plus a necessary general hardware platform. Based on this understanding, the technical solution of the present invention can be embodied in the form of software products, which can be stored in a non-volatile storage medium (which can be CD-ROM, U disk, mobile hard disk, etc.), including several The instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute the methods described in various embodiments of the present invention.

Those skilled in the art can understand that the drawing is only a schematic diagram of a preferred embodiment, and the modules or processes in the drawing are not necessarily necessary for implementing the present invention.

Those skilled in the art can understand that the modules in the device in the embodiment can be distributed in the device in the embodiment according to the description in the embodiment, or can be located in one or more devices different from the embodiment according to corresponding changes. The modules in the above embodiments can be combined into one module, and can also be further split into multiple sub-modules.

The serial numbers of the above embodiments of the present invention are for description only, and do not represent the advantages and disadvantages of the embodiments.

The above disclosures are only a few specific embodiments of the present invention, however, the present invention is not limited thereto, and any changes conceivable by those skilled in the art shall fall within the protection scope of the present invention.

Claims (2)

1. a method for realizing dynamic two-dimensional subtitles by data array, is characterized in that: described method specifically comprises: 1) Determine the subtitle window resolution; 2) Establish a system processing array unit according to the resolution of the subtitle window, and record the unit assignment corresponding to each frame in the special effect process in the unit to become a special effect data array; 3) set up the system special effect data array unit database with the frame variable as the key word; 4) Read the database sequentially in frame order; Wherein, the specific steps in the step 1) include: 11) obtain the basic size parameter of the subtitle window, and obtain the user preset resolution; the basic size parameter includes: deformed subtitle window length value X1, deformed subtitle window width value Y1 ; 12) Obtain the maximum resolution by the basic size parameter of the subtitle window; 13) Determine whether the user preset resolution is greater than the maximum resolution, if so, determine that the maximum resolution is the subtitle window resolution, otherwise, determine the subtitle window resolution according to the user preset resolution; Said step 2) also includes in the specific steps: 2A) Duty cycle optimization, the specific steps of the duty cycle optimization include: 2A1) Uniformly assign values to the sequence units in the special effect data array that have no attribute changes; 2A2) Separately establish a duty cycle optimization database for the above-mentioned unified assignment unit; Described step 4) also comprises: First, the duty cycle optimization database is uniformly assigned. 2. The method according to claim 1, characterized in that: said special effect data array at least includes: special effect name and frame variable information.