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News video retrieving method based on subtitle extraction

A technology for news and subtitles, applied in the field of data processing, can solve problems such as low efficiency, lack of support for similarity search and similarity sorting, and achieve the effect of improving accuracy

Inactive Publication Date: 2013-06-19
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, if it is used as a full-text search, the efficiency is relatively low, a separate index is required, and similarity search and similarity sorting are not supported.

Method used

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  • News video retrieving method based on subtitle extraction
  • News video retrieving method based on subtitle extraction
  • News video retrieving method based on subtitle extraction

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Embodiment Construction

[0060] The present invention will be further described below in conjunction with accompanying drawing:

[0061] According to the characteristics of the news video, the invention first divides the news video into shots, and then classifies different types of shots through a support vector machine. According to the structural characteristics of the news, the news is analyzed structurally through the position of the special lens. After frame fusion is performed on the frames that may have useful subtitles, the character area and the characters in the enhanced fusion frame are extracted to be recognized by the character recognition module to extract the title subtitle. The extracted subtitles are stored in the database while being externally indexed to improve search efficiency and provide correlation sorting and correlation query.

[0062] 1. Segmentation of news shots

[0063] The overall process of news lens segmentation is as follows: figure 1 shown. Shot segmentation usin...

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Abstract

The invention discloses a news video retrieving method based on subtitle extraction, which comprises the following steps of news image division, special image detection, news structural analysis, shot frame merging, text title positioning, character identification, title subtitle index building and the like. The method overcomes the defects in the prior art, the title subtitle in the video can beextracted to be organized and managed, and the method is used for the video retrieval based on the contents.

Description

technical field [0001] The invention relates to the technical field of data processing, in particular to a news video retrieval method based on subtitle extraction. Background technique [0002] Video is an important element in a multimedia environment and it has a wide range of applications in many different fields. News videos are an important branch of videos, they contain a lot of useful information. The content-based video retrieval system refers to searching for the required information in the video set through text, pictures or other features of the video. To achieve content-based video retrieval, the video must first be properly segmented, and after an index for retrieval is established, users can retrieve videos through text and other content. Caption-based retrieval is one such method. For the news video, since the news title in the video has a good description of the content of the news story, it can be used as a text label for content-based news video retrieva...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/30H04N21/80
Inventor 章毅彭德中张蕾吕建成张海仙郑伯川郭泉
Owner SICHUAN UNIV
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