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Escalator passenger abnormity behavior detection algorithm base on machine vision

A technology of escalators and detection algorithms, which is applied in the direction of instruments, calculations, computer parts, etc.

Active Publication Date: 2016-11-16
HITACHI ELEVATOR GUANGZHOU ESCALATOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are relatively few researches on video surveillance and automatic control of escalators. Therefore, it is necessary to speed up the research and development of escalator video surveillance systems to reduce the probability of escalator safety accidents.

Method used

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  • Escalator passenger abnormity behavior detection algorithm base on machine vision
  • Escalator passenger abnormity behavior detection algorithm base on machine vision
  • Escalator passenger abnormity behavior detection algorithm base on machine vision

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Embodiment Construction

[0141] The present invention will be further described below in conjunction with specific examples.

[0142] Such as figure 1 As shown, the abnormal behavior detection algorithm of the escalator passenger based on machine vision described in this embodiment mainly judges whether the behavior of the passenger is abnormal by analyzing the direction of motion and the velocity of the passenger's head on the escalator (in this paper) In the algorithm, the back of the head or the top of the passenger's head is the region of interest, because the back of the head or the top of the head has an ellipse-like shape in the image, and the gray value of the back of the head or the top of the head is more single and easier than the front of the head. Therefore, the camera should be installed above the passenger's head and must be installed in the direction of passenger movement, such as figure 2 mentioned), the details are as follows:

[0143] 1) Video image acquisition

[0144] A singl...

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Abstract

The invention discloses an escalator passenger abnormity behavior detection algorithm base on machine vision. The algorithm comprises steps that 1), video image acquisition is carried out; 2), Canny edge detection on an acquired image is carried out; 3), a circle-like zone of an edge image is obtained by utilizing Hough circle transformation; 4), whether the circle-like zone is a human head is determined through a human head gray histogram template; 5), a human head of the image is tracked by utilizing a Mean Shift algorithm; 6), a moving direction and a moving speed of a center point of the circle-like zone of a head portion of each passenger are calculated; and 7), behaviors of passengers are determined through analyzing the moving directions and the moving speeds of the center points of the circle-like zones. Through the algorithm, safety quality of an escalator can be effectively improved, deterioration of situations of emergent events can be prevented, and an injury degree of fall-over passengers on the escalator can be reduced to a maximum degree.

Description

technical field [0001] The invention relates to the field of image pattern recognition and the field of elevator production technology, in particular to a machine vision-based algorithm for detecting abnormal behavior of escalator passengers. Background technique [0002] With the economic growth, the use of escalators has become more and more frequent, and the safety accidents on the escalators that follow are also increasing. Most of the safety accidents on the escalator are because when the state or behavior of the passengers on the escalator is abnormal, the escalator cannot respond and respond in time, but mechanically maintains the same working mode, resulting in abnormal situations amplification and deterioration. It is impossible to arrange emergency workers to monitor the status of escalators and passengers beside each escalator. Therefore, it is very important to allow the escalator to automatically adjust the working mode when an abnormal situation occurs. Usin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V20/42
Inventor 田联房朱斌杜启亮
Owner HITACHI ELEVATOR GUANGZHOU ESCALATOR
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