Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for extracting compressed video key frames

A video key frame and key frame technology, applied in the video field, can solve problems such as incomplete video content description

Inactive Publication Date: 2012-09-26
SUN YAT SEN UNIV
View PDF2 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of the prior art and provide a method for extracting compressed video key frames, which can more accurately extract key frames that can reflect the main content of the video, and make up for the single use of DC coefficients. The defect that the feature information describes the video content incompletely

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 compressed video key frames
  • Method for extracting compressed video key frames
  • Method for extracting compressed video key frames

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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.

[0053] The purpose of the present invention is to propose a method for extracting compressed video key frames in view of the shortcomings of single feature selection, low accuracy of extracted key frames, and low algorithm efficiency in the current method for extracting video key frames in the compressed domain.

[0054] The method of the present invention first extracts the color feature of the video from the DC coefficient, then extracts the features of the edge a...

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 compressed video key frames. The method includes: firstly, extracting color characteristics of a video from a DC coefficient, then extracting characteristics of edges, textures and the like of an AC coefficient and normalizing different values by means of a Gaussian model to obtain fusion characteristics, so that complete characteristic similarities are obtained to improve representativeness and increase the accuracy rate of the key frames; and then establishing a curve by the aid of the complete characteristic similarities, and performing curvature detection for the curve for twice so as to extract the key frames. By the method, the key frames capable of reflecting main contents of the video can be accurately extracted, and the defect of incomplete video content descriptions by using DC coefficient characteristic information only is made up. Moreover, automatic extraction of the key frames is realized by means of two-time curve detection, and artificial determination of the amount of the key frames is avoided.

Description

technical field [0001] The invention relates to the field of video technology, in particular to a method for extracting compressed video key frames. Background technique [0002] With the rapid development of network technology and multimedia technology, the digital age has come. Massive videos flood into the Internet and enter people's lives, bringing visual and auditory enjoyment to people. At the same time, scientific and reasonable management of these massive videos has become a daunting task in front of people. How to obtain the video data that people are interested in from the massive video has also become a problem that computer technology must solve. The research of video retrieval technology has also become a hot issue in the field of computer research in the world under the call of the digital age. [0003] Key frame extraction is a key part of video retrieval, and the quality of key frames directly affects the efficiency of video retrieval. In order to save the...

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): H04N7/26H04N7/30H04N19/625
Inventor 蒋昊罗笑南黄鹏
Owner SUN YAT SEN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com