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

Keyframe extraction method of sequence video

A technology of video key frame and extraction method, applied in television, image data processing, instruments, etc., can solve the problems of low precision and low efficiency, and achieve the effect of improving effectiveness

Inactive Publication Date: 2013-11-27
NANJING NORMAL UNIVERSITY
View PDF4 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to propose a sequence video key frame extraction method for the shortcomings of low efficiency and low precision in the existing sequence video three-dimensional reconstruction

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
  • Keyframe extraction method of sequence video
  • Keyframe extraction method of sequence video
  • Keyframe extraction method of sequence video

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] The present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0030] Video data contains more than 20 frames of images per second. Considering the rich information contained in sequence video data and the high degree of overlap between adjacent frame images, the present invention proposes a key frame extraction method for sequence video. The invention is applicable to three-dimensional reconstruction and measurement of sequence video, data compression of sequence video and the like. Most of the traditional 3D reconstruction methods incorporate all sequence videos into the reconstruction processing flow. Compared with the traditional methods, the present invention can improve the reconstruction quality and reduce the reconstruction cost. The structural diagram of the present invention is in figure 1 The frame diagram of key frame extraction method of sequence video is shown in ...

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 keyframe extraction method of a sequence video. The method comprises the following steps: (1) capturing the sequence video, dividing the sequence video into video frames, performing feature point extraction and matching on first n frames of images in the sequence video, and carrying out tracking on feature points; selecting two frames of images as an initial keyframe from the sequence video in terms of a base length, distribution conditions of the feature points and other constraint conditions; (2) determining a keyframe candidate set on the basis of obtaining the initial keyframe according to an image feature point matching rate; (3) further determining keyframe images from the keyframe candidate set in accordance with focal length change constraints and GRIC (Geometric Robust Information Criterion). According to the keyframe extraction method, the obtained keyframe images can be used for three-dimensional reconstruction and measurement of the sequence video and can also be applied to the compression of sequence video data and the like.

Description

technical field [0001] The invention belongs to the technical fields of computer vision, photogrammetry and image processing, and relates to a method for extracting sequence video key frames. Background technique [0002] With the development of technology, all kinds of digital products such as digital cameras, video cameras and mobile phones have become the necessities of people's life. These products have a common feature: they can easily obtain image data. Video is not only a popular entertainment medium, but also a true representation of historical features, environmental changes, and scene descriptions. Therefore, it can be said that images are an effective carrier to express the real world. In the face of people's urgent need for images that can truly restore the real world, it is necessary to fully mine the three-dimensional geometric information contained in images, and how to effectively solve this problem is a common challenge for computer vision and photogrammetry...

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): G06T7/20H04N7/26
Inventor 刘学军甄艳胡加佩
Owner NANJING NORMAL UNIVERSITY
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com