A method and system for realizing subtitle special effects by multitasking

Abstract

The invention relates to a method and system for multitask realization of a caption special effect, more particularly to multitask processing in a caption window during a processing process of caption effects in the broadcast television program manufacturing and broadcasting fields. The method comprises: (1), according to the task number, carrying out screen pixel assignment region division; (2), determining an initial running task according to a task execution mode and reading the initial operation task according to task region division; (3), carrying out task optimization based on the task execution mode and the divided regions; (4), in each task region division, colleting a pixel in a region that each frame is located at and carrying out pixel assignment on the each pixel by pixel assignment calculation; and (5), according a task sequence, running other tasks. Moreover, the system consists of a task division unit, a reference vector element attribute input unit, a pixel collection and calculation unit, a comparison assignment unit, and a task execution unit. According to the invention, all tasks are distributed based on task management; when there are multiple tasks in a caption window, relationships among tasks can be effectively coordinated, thereby completing realization of multiple tasks. Furthermore, on the basis of task decomposition and optimization, corresponding assignment optimization schemes are formulated according to different task execution modes, so that rendering time is decreased under the circumstances that operation is increased.

Description

technical field [0001] The invention relates to the production and broadcasting of program subtitles and related technical fields, in particular to a method and system for realizing subtitle special effects with multiple tasks. Background technique [0002] In the existing program production and broadcast and related technical fields, in the process of program material production, in order to better represent the text, it is necessary to synthesize a large number of subtitles, especially in the production and playback of large-scale 3D films and materials. In order to obtain a better effect, it is often necessary to insert special effects into the subtitles. With the continuous improvement of the requirements for special effects, 3D effect subtitle special effects have appeared one after another. In the implementation process of 3D subtitle special effects, a large amount of data needs to be calculated. In addition, a large amount of calculations are usually performed with t...

AI Technical Summary

Problems solved by technology

[0004] In the process of 3D subtitle production and synthesis, large-capacity storage space and fast running speed are required, so the requirements for graphics card and GPU are relatively high. In the process of simple special effect synthesis, the system is wasted. At the same time, There are also many restrictions on the playback device, such as operating speed and processing power, which impose restrictions on the production and use of 3D subtitle special effects.

[0005] At the same time, when the pixels in the subtitle window are rendered in 2D mode, only one task can be processed in one subtitle window, resulting in the situation that the wipe effect cannot be decomposed. The same pixel in the subtitle window is repeatedly calculated, which increases the amount of calculation on the one hand, and increases the error rate on the other hand

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