Method and system for realizing dynamic two-dimensional subtitle of shadow

Abstract

The invention discloses a method and system for realizing a dynamic two-dimensional subtitle of a shadow, mainly relating to the making and processing of animated caption in the fields of making and broadcasting of broadcast and television programs. The method comprises the steps of: 1, acquiring pixel information in a subtitle window and a shadow parameter; 2, assigning a related shadow area according to the shadow parameter; 3, establishing an association of a broadcasting frame and an assignment of the shadow area; and 4, rendering each frame of picture according to the association based on the frame sequence. The system comprises a subtitle window information acquiring unit, a shadow parameter acquiring unit, a shadow area generation associating unit and a rendering and assigning unit, wherein the subtitle window information acquiring unit and the shadow parameter acquiring unit are used for inputting parameters to the shadow area generation associating unit, and the shadow area generation associating unit outputs the parameters to the rendering and assigning unit for rendering pixels in the subtitle window. According to the invention, through basic size parameters of the original subtitle window and basic sizes of the deformed subtitle window, parameters of shadow deformation functions are dynamically obtained, therefore, the problem of incapability of dynamically displaying the special effects of the shadow is dynamically and linearly solved, and more display effects of shadow irradiation are provided.

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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