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Fighting behavior detection method and device based on video images

A technology of video images and detection methods, which is applied in the fields of instrument, calculation, character and pattern recognition, etc., can solve the problems of missed detection of fighting behavior, occlusion of fighting targets, and difficulty in accurately detecting targets, and achieve the effect of improving accuracy.

Active Publication Date: 2021-06-01
ZHEJIANG UNIVIEW TECH CO LTD
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  • Summary
  • Abstract
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  • Claims
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Problems solved by technology

The traditional moving target detection algorithm is easily affected by factors such as light, which makes it difficult to accurately detect the target and easily leads to misjudgment of the follow-up rules; Missed detection of fighting behavior

Method used

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  • Fighting behavior detection method and device based on video images
  • Fighting behavior detection method and device based on video images
  • Fighting behavior detection method and device based on video images

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Embodiment Construction

[0053] 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. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0054] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0055] It should be noted that like numeral...

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Abstract

Embodiments of the present invention provide a video image-based fighting behavior detection method and device, by obtaining the number of first target features in the video image frame to be tested, and detecting whether the number of the first target features is greater than a first preset threshold . If it is greater than the first preset threshold, then obtain a plurality of adjacent video image frames adjacent to the video image frame to be tested, and according to the video image frame to be tested and the plurality of adjacent video image frames Judging whether a fighting behavior occurs based on the changes in the characteristics of the first target. If it is less than or equal to the first preset threshold, then obtain the second target feature in the video image frame to be tested, and detect whether there is a connected part in the second target feature in the video image frame to be tested, to determine whether a fight has occurred. This solution comprehensively judges whether a fighting behavior occurs through multiple decisions combined with feature changes, and improves the accuracy of fighting behavior detection based on video images.

Description

technical field [0001] The present invention relates to the technical field of video monitoring, in particular to a method and device for detecting fighting behavior based on video images. Background technique [0002] With the development of the times and the advancement of technology, the behavior analysis technology based on video images is also constantly changing. At present, there is a strong demand for the behavior analysis of fighting in squares, roads, hotels, prisons and other places. Most of the existing fight detection algorithms are based on the traditional background subtraction algorithm, which first detects the moving target; then extracts the feature points of the moving target to calculate the motion vector, or extracts the contour of the target; finally uses the motion vector feature or contour change rules to determine whether a fight occurs. The traditional moving target detection algorithm is easily affected by factors such as light, which makes it di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00
CPCG06V40/20G06V20/40
Inventor 刘俊管国威
Owner ZHEJIANG UNIVIEW TECH CO LTD
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