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Extraction method for video space-time movement track

A motion trajectory and extraction method technology, applied in the field of image processing, can solve problems such as large amount of calculation and difficult to meet the real-time performance of the system, and achieve the effect of small amount of calculation, high accuracy and simple description

Active Publication Date: 2016-11-09
XIAMEN TONGJING INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it is feasible to use the traditional optical flow method to extract the temporal and spatial motion trajectory of the video, the amount of calculation is very large, and it is difficult to meet the real-time requirements of the system.

Method used

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  • Extraction method for video space-time movement track
  • Extraction method for video space-time movement track
  • Extraction method for video space-time movement track

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Embodiment Construction

[0044] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0045] In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.

[0046] Overall, such as...

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Abstract

The invention discloses an extraction method for a video space-time movement track. and relates to the technical field of image processing methods. The method comprises the following steps that a video time-space slice is generated; a movement track is extracted from the video time-space slice; target movement track information of different video time-space slices is mixed; a mixed video time-space movement track is decomposed and used to establish an STS-CS model; and the STS-CS model is used to describe a vide time-space movement track. The STS-CS model established by the method can fully capture all target movement state change that can draw visual attentions, description is simple, the computational complexity is low and the accuracy is high.

Description

technical field [0001] The present invention relates to the technical field of image processing methods, in particular to a method for extracting video spatiotemporal motion trajectories. Background technique [0002] With the explosive growth of video data, analyzing and browsing video quickly and accurately has become an urgent problem to be solved, especially in video surveillance applications. Keyframe extraction is gaining more and more attention as a feasible solution. The evaluation of key frames is mainly to see whether they can fully and accurately reproduce the main events in the original video, and reduce redundancy as much as possible under the premise of ensuring comprehensive extraction. The currently widely used key frame extraction algorithms are usually based on the analysis of the underlying features of the video, and the key frame extraction is performed based on the change of content features (color, shape, motion, etc.) of a single frame or a small numb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/14
CPCH04N5/144
Inventor 张云佐
Owner XIAMEN TONGJING INTELLIGENT TECH CO LTD