Method and system for transformation of scrolling mode of two-dimensional caption

A technology of page curling and subtitles, applied in the field of program subtitle production and broadcasting, can solve the problems of system waste, incomplete graphics, the running speed and processing capacity limitation of playback equipment, etc., and achieve the effect of solving image distortion and missing and good restoration.
CN102724443BInactive Publication Date: 2014-11-05CHINA DIGITAL VIDEO BEIJING
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA DIGITAL VIDEO BEIJING
Publication Date
2014-11-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention, which mainly relates to processing on a caption special effect in the broadcast television program manufacturing and broadcasting fields, discloses a method and system for transformation of a scrolling mode of a two-dimensional caption. The method comprises: (1), obtaining basic dimension parameters of an original caption window and transformation parameters; (2), according to the transformation parameters, carrying out caption window space reservation so as to determine a caption scanning window and extract parameters of the caption scanning window; (3), calculating a scrolling position according to a scrolling function f (x, y, t) in the caption scanning window and carrying out screen dividing based on the scrolling position; and (4), according to the screen dividing, carrying out rendering on each pixel point position. Moreover, the system consists of a caption window collection unit, a caption window space reservation unit, a screen dividing unit, and a rendering unit. According to the invention, the caption window space reservation is carried out to display an image exceeding the scrolling transformation part, so that problems of image distortion and missing of a scrolling transformation special effect during a playing process can be solved. And moreover, pixel superposition of a scrolling part enables a pixel of the scrolling part to be restored well and truly.
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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 transforming two-dimensional subtitles in a page scrolling manner. 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...

Claims

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