Method and system for implementing shadowed dynamic two-dimensional subtitles

Abstract

The invention discloses a method and system for realizing dynamic two-dimensional subtitles of shadows, 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) collecting pixels in the subtitle window information, and shadow parameters; 2) assign values ​​to the shadow areas involved according to the shadow parameters; 3) establish associations between play frames and shadow area assignments; 4) render each frame according to the association according to the frame sequence. The system includes: a subtitle window information acquisition unit, a shadow parameter acquisition unit, a shadow area generation association unit, and a rendering assignment unit, wherein the subtitle window information acquisition unit and the shadow parameter acquisition unit input parameters into the shadow area generation association unit, and the shadow area generation The association unit is output to the rendering assignment unit to perform pixel rendering in the subtitle window. The present invention dynamically obtains the shadow deformation function parameters through the basic size parameters of the original subtitle window and the basic size of the transformed subtitle window, thereby solving the problem of shadows dynamically and linearly. The problem of dynamic display of special effects, through light trails, thus providing more display effects of shadow lighting.

Description

technical field [0001] The present 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 of shadows. Background technique [0002] 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 need 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 th...

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Problems solved by technology

[0005] 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 also many restrictions on the playback device, such as operating speed and processing power, which limit the production and use of 3D subtitle deformation effects.

[0006] Static subtitles cannot be processed directly in the prior art, and in the process of implementing shadow effects, it is usually used in static rendering. For dynamic rendering, due to the large amount of calculation, it will cause a waste of system resources. Increased production time and cost

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