Method for extracting video captions quickly and accurately

An extraction method and subtitle technology, which are applied in the field of subtitle extraction in video signals, can solve the problems of sensitive position information of subtitles, cannot be applied well, and can not be both excellent in video extraction speed and performance, so as to improve positioning accuracy and speed. Effect

Inactive Publication Date: 2009-06-03
XI AN JIAOTONG UNIV
View PDF1 Cites 34 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the patent ZL03123473.9, "A Method for Extracting Subtitles Using Subtitle Position and Other Information" is disclosed, and the extracted results are effectively used to assist the disabled, but one limitation of this technology is the position where the subtitles app...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for extracting video captions quickly and accurately
  • Method for extracting video captions quickly and accurately
  • Method for extracting video captions quickly and accurately

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] refer to figure 1 As shown, it includes the following execution steps: firstly perform the extraction of video key frame luminance image 10; then perform texture projection positioning subtitle bar 20 to determine the position information of the subtitle bar in the video frame; then perform the determination of the subtitle bar starting frame and End frame 30, to determine the frame number of the start frame and end frame of current subtitle bar in video, to improve the speed that subtitle extracts; Execute to extract word 40 at last, utilize the continuous frame information of current subtitle bar, the subtitle bar in the Separate the text from the background, and extract the text information in the subtitle bar.

[0053] The method of extracting the luminance image 10 of the video key frame in the above steps is implemented according to a certain rule to extract the luminance image of a specified frame from only the decoded video stream in the video stream. The compr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for extracting video captions quickly and accurately, and the procedure thereof is as follows: extracting video key frame brightness images; generating a texture, projecting and positioning caption strips; confirming the initiation frame and the termination frame of the caption strips; and extracting characters. Texture diagrams of the video key frame brightness images are extracted by wavelet transform; the positions of the caption strips of the key frame images are positioned by utilizing the texture diagram projection method; the same caption of two frames are judged by the caption point match method; and the initiation frame and the termination frame of the caption strip can be quickly confirmed in the video, therefore, all the continuous frames of the caption strips can be confirmed only by invoking one localization; and the characters in the caption strips are extracted by the texture noise elimination method.

Description

technical field [0001] The invention relates to the field of multimedia video analysis, in particular to a fast and accurate method for extracting subtitles in video signals. Background technique [0002] With the rapid development of communication technology and the explosive increase of multimedia video resources, technologies such as video analysis, video retrieval, and video management have emerged. How to effectively describe the content of these video resources has become a challenging research topic. [0003] The subtitle information of the video directly describes the target object and the content of the story in the video, so that people can understand and appreciate the content of the video more intuitively, so it is a direct and effective feature to describe the content of the video. At the same time, subtitles provide a lot of important information in the video, such as names, scenes, dates, times, game scores, program introductions, etc. At this stage, the ana...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04N5/278G06K9/32
Inventor 刘贵忠李智钱学明姜龙
Owner XI AN JIAOTONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap