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Method and device for detecting video subtitle area

A detection method and subtitle technology, applied in the field of image processing, can solve the problem of large resource consumption

Active Publication Date: 2018-03-27
BEIJING QIYI CENTURY SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the embodiments of the present invention is to provide a video subtitle area detection method to solve the problem of large resource consumption in the prior art when performing subtitle detection

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  • Method and device for detecting video subtitle area
  • Method and device for detecting video subtitle area

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Embodiment Construction

[0087] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0088] refer to figure 1 , which shows a flow chart of the steps of an embodiment of a method for detecting a video subtitle area of ​​the present invention, which may specifically include the following steps:

[0089] Step 101, divide the current image into n*m image blocks.

[0090] Among them, n≥1, m≥1. Specifically, the image Ft at time t in the video sequence is acquired as the current image. It should be noted that how to divide the current image into image blocks can be set by those skilled in the art according to actual needs such as image resolution, and the present invention does not specifically limit this. For example, dividing the current image into 8*8, 16*16 or image blocks.

[0091] Step 102, determine the imag...

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Abstract

The embodiment of the invention provides detecting method and device for a video subtitle area. The method comprises the steps of dividing the current image into n*m image blocks; determining an image block i to be detected; determining whether the image block i meets the preset condition; if so, determining that the image block i is the subtitle area; if not so, respectively determining the rest image blocks. Compared with the prior art, the method has the advantages that the image is divided into a plurality of image blocks, whether the image blocks are the subtitle area are respectively determined, and therefore, the video subtitle area is detected through image blanks; a large number of frequency domain transformation operations are saved, so that the calculation complexity can be effectively reduced, and the consumption of system resources can be decreased.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a detection method and device for a video subtitle area. Background technique [0002] With the rapid discovery of computer hardware technology, multimedia technology and the continuous popularization of high-speed broadband, video is constantly replacing images, sounds and texts as the most important media form. In some movies, TV dramas and variety shows, especially in foreign-language movies and TV shows, subtitles provide rich information and are the focus of attention of users in the process of watching videos. However, due to the large differences in subtitles in different videos, users cannot quickly and accurately identify subtitles when the color of the font is unclear or the font is too small. To solve this problem, if the subtitle area in the video can be detected, identified, and enhanced, it can reduce the difficulty for users to recognize the subtitle. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/431H04N21/435H04N21/442
CPCH04N21/435
Inventor 李勇鹏
Owner BEIJING QIYI CENTURY SCI & TECH CO LTD