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A rolling subtitle detection method and device

A technology of scrolling subtitles and detection methods, applied in image communication, selective content distribution, electrical components, etc., can solve the problems of slow detection speed and time-consuming, and achieve the effect of improving detection speed

Active Publication Date: 2018-04-13
BEIJING QIYI CENTURY SCI & TECH CO LTD
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Problems solved by technology

However, since the target tracking technology based on optical flow mainly uses the relaxation iterative algorithm, the algorithm is time-consuming, so the detection speed is slow

Method used

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  • A rolling subtitle detection method and device
  • A rolling subtitle detection method and device
  • A rolling subtitle detection method and device

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Embodiment Construction

[0061] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described implementation Examples are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0062] In recent years, subtitles have become an indispensable part of media systems such as TV and video websites. Together with TV programs, video images, sounds, special effects, etc., subtitles form a multi-directional multi-information channel that shares time and space. means of dissemination. In most cases, there is a rolling subtitle a...

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Abstract

The embodiment of the invention discloses a rolling subtitle detection method and device. A rolling subtitle detection method, comprising: for each video frame image i in the target video segment, edge detection is performed on the image, and edge pixels in the image are determined; the proportion of edge pixels in each row in the image is counted , determine the candidate subtitle area set Pi of the video frame image i; determine the candidate subtitle area set V of the target video segment according to each Pi determined; for each area V[j] in V, determine the area that contains the area Frame image sequence, judge whether any two adjacent frame images in the sequence are satisfied: the image part corresponding to V[j] in the next frame image exists compared to the image part corresponding to V[j] in the previous frame image Pixel translation, if yes, determines V[j] as the rolling subtitle area. The present invention only needs to carry out simple counting of the number of edge pixel points, and does not need to carry out relatively complicated calculations, and the detection speed is fast.

Description

technical field [0001] The invention relates to the technical field of video detection, in particular to a rolling subtitle detection method and device. Background technique [0002] In recent years, rolling subtitles often appear in the playback screen of TV programs and videos to provide viewers with additional information in the form of text. However, in some cases, these subtitles may play a negative role, for example, Real-time information (including stock prices, news trends, etc.), which is meaningful only in the case of live broadcast due to its effectiveness, may mislead the audience when users watch the rebroadcast video. [0003] In view of the above situation, it is necessary to detect the rolling subtitles in the video, so as to perform processing such as deletion or replacement. An existing automatic detection method of scrolling subtitles is realized by object tracking technology based on optical flow. However, since the target tracking technology based on o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/435H04N21/81
Inventor 许鹏王涛杨琛
Owner BEIJING QIYI CENTURY SCI & TECH CO LTD
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