Method for dividing crowd in surveillance video into small groups

A technology for monitoring video and small groups, applied in image analysis, image data processing, instruments, etc.

Active Publication Date: 2015-03-04
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to study the interactive behavior of small groups in surveillance video scenes, solve the problem of how to divide the crowd into small groups

Method used

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  • Method for dividing crowd in surveillance video into small groups
  • Method for dividing crowd in surveillance video into small groups
  • Method for dividing crowd in surveillance video into small groups

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with accompanying drawing.

[0040] Such as figure 1 and 2 As shown, in the monitoring video of the present invention, the method for segmenting small groups of crowds includes the steps as follows:

[0041] 1. Perform pedestrian detection and tracking on each frame of images in the surveillance video to obtain pedestrian movement characteristics:

[0042] (1) Pedestrian detection: For each frame of the video, a pedestrian detection algorithm based on the histogram of gradient orientation (HOG) feature is used for pedestrian detection. This method uses human body symmetry detection to screen pedestrian candidate areas, and then combines HOG features and SVM classification The device verifies the candidate regions. It can speed up the detection speed and reduce the false detection rate at the same time, so as to obtain the position information of pedestrians on each frame of image.

[0043] (2) ...

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Abstract

The invention discloses a method for dividing a crowd in a surveillance video into small groups. The method comprises the steps of (1) performing pedestrian detection and tracking on each frame of image in the surveillance video, thereby obtaining pedestrian motion characteristics, (2) obtaining each pedestrian atom behavior in the video images, (3) establishing a motion characteristic correlation energy function of each pair of pedestrians, (4) calculating pedestrian subject degree values according to the interactive correlation of the pedestrians and finding out crowd sets, thereby completing the division of the small groups. An effective method is provided for studying the interactive behaviors of small groups in the surveillance video scenes and solving the problem of dividing the crowd into the small groups.

Description

technical field [0001] The invention belongs to the direction of video behavior detection and monitoring in video monitoring, and specifically relates to a method for segmenting small crowds in a monitoring video, which is of great significance for in-depth analysis of crowd interaction behaviors. Background technique [0002] With the rapid growth of urban population and the increasingly complex urban environment, mass incidents such as riots, terrorist attacks and other urban social security emergencies have seriously affected urban public safety. The improvement of people's demand for safety has made the construction of a safe city an important theme in today's international society. Studies have shown that at least 89% of those who attend an event come with someone else, and 94% of those who leave an event leave with someone else. Most previous work has focused on single-person behavior analysis, two-person behavior interaction recognition, and single group behavior ana...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T7/20G06K9/66
CPCG06T7/215G06T2207/30196G06V40/10
Inventor 章东平孙敏徐凯航李文婷
Owner CHINA JILIANG UNIV
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