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Violent movement detection method based on characteristic point analysis and device thereof

A technology of strenuous exercise and feature points, applied in the field of vigorous exercise detection methods and devices, can solve the problems of inability to accurately detect abnormal crowd behaviors and cannot be popularized and applied

Active Publication Date: 2012-09-12
NETPOSA TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for complex actual scenes, the above methods cannot accurately detect abnormal behaviors of the crowd, so they cannot be widely applied

Method used

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  • Violent movement detection method based on characteristic point analysis and device thereof
  • Violent movement detection method based on characteristic point analysis and device thereof
  • Violent movement detection method based on characteristic point analysis and device thereof

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Embodiment Construction

[0065] In order to enable your examiner to further understand the structure, features and other purposes of the present invention, it is now described in detail in conjunction with the attached preferred embodiments. The illustrated preferred embodiments are only used to illustrate the technical solutions of the present invention, not to limit the present invention. invention.

[0066] figure 1 Shows a flow chart of the method for severe exercise detection based on feature point analysis according to the present invention. Such as figure 1 As shown, the vigorous exercise detection method based on feature point analysis according to the present invention includes:

[0067] The first step 101 is to establish and update a background image, and extract the foreground image of the current frame image according to the background image;

[0068] In the second step 102, a gradient image of the foreground image is acquired, and feature points are extracted from the gradient image;

[0069] Th...

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Abstract

The present invention provides a violent movement detection method based on characteristic point analysis and a device thereof. The method comprises the following steps of: establishing and updating a background image, and extracting a foreground image of a present frame image according to the background image; acquiring a gradient image of the foreground image, and extracting a characteristic point according to the gradient image; then tracking the characteristic point, and acquiring an offset of the characteristic point; filtering a characteristic point with a small offset, carrying out clustering analysis on the characteristic point, obtaining a key area, and calculating a violent movement coefficient of the key area; and judging whether violent movement exists or not.

Description

technical field [0001] The invention relates to image processing and video monitoring, in particular to a violent motion detection method and device. Background technique [0002] In order to ensure the stability of social security and the stability of people's lives, video surveillance devices have been installed in various large and medium-sized cities in my country. These video surveillance devices need to have different detection functions according to the application places. Among them, in important public places such as stations, airports, supermarkets, commercial blocks, sports fields, etc., violent motion detection is very important, and it can effectively reduce the probability of dangerous events. [0003] International patent application WO 2007 / 064559A1 discloses a method for detecting abnormal crowd behavior. The method first detects crowd clusters in a scene, and then analyzes crowd behavior (such as fighting) by calculating the entropy value of the clusters. ...

Claims

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Application Information

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IPC IPC(8): G06T7/20
Inventor 游磊
Owner NETPOSA TECH