Video subtitle information extracting method

A technology for information extraction and subtitles, which is used in TV, color TV, image communication, etc., and can solve the problems of background complexity, difficulty in finding the intersecting parts of strokes, and poor versatility.
CN101453575AInactive Publication Date: 2009-06-10INST OF COMPUTING TECH CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
INST OF COMPUTING TECH CHINESE ACAD OF SCI
Publication Date
2009-06-10
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention provides a method for extracting video subtitle information, which comprises: preprocessing video images of which subtitles are required to be extracted; performing multi-dimensional subtitle region detection on the preprocessed video images, and obtaining rectangular blocks which represent the dimension and the position of subtitle regions; utilizing the rectangular blocks to split detected subtitle regions; enhancing the contrast of split subtitle regions; and adopting a K mean cluster method to realize extraction of the subtitles. The method has commonality on different language types, different fonts and different dimensions of the subtitles and different video program types, has the advantages of high accuracy of subtitle region detection and character recognition and high speed, does not need to perform model training under the condition of subtitle region detection, and reduces the possibility of influence of poor model training on prediction results.
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Description

technical field

[0001] The invention relates to subtitle information extraction in videos, in particular to a method for extracting video subtitles by using video semantic information. Background technique

[0002] In recent years, the development of digital video technology is quite rapid, and it has gradually replaced the traditional storage and transmission mode in the field of broadcasting and television, and its application on the Internet has been expanded at an astonishing speed. Digital video has the advantages of convenient acquisition and access and large amount of information, but it also has the characteristics of large amount of data and difficult description. With the massive growth of video data, people urgently need advanced video processing technology to achieve effective video indexing, summarization, browsing and retrieval. Video subtitle information has important research and application value because it is relatively easy to extract, directly characteri...

Claims

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