Monitoring method and system based on door motion state

A motion state, state technology, applied in CCTV systems, image data processing, instruments, etc., can solve the problem of not being able to judge the movement process of the door from closing to opening.

Active Publication Date: 2015-09-16
FUJIAN STAR NET COMM
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Problems solved by technology

The application date is 2014.08.13, and the application publication number is CN 103986906 A patent "door opening and closing detection method based on surveillance video", which provides a method of judging the door by using the matching of the characteristic line and the horizontal position of the door seam in the background model. This method can only judge whether the door is closed or open, but cannot judge the movement process of the door from closing to opening.

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  • Monitoring method and system based on door motion state
  • Monitoring method and system based on door motion state
  • Monitoring method and system based on door motion state

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Embodiment Construction

[0051] In order to describe the technical content, achieved goals and effects of the present invention in detail, the following descriptions will be made in conjunction with the embodiments and accompanying drawings.

[0052] The most critical idea of ​​the present invention is: for the revolving door, the state of the door at any moment during the opening and closing process is obtained by a geometric transformation relative to the door's initial state when it rotates an angle around the door axis. Therefore, a certain angle β of the door opening is the state when the door is rotated relative to the door axis by an angle β. The state of the door at any time will correspond to a rotation angle. By judging the transformation of the rotation angle, the motion state of the door can be judged. For sliding doors, the transformation operation is a geometric translation transformation.

[0053] Please refer to figure 1 , Embodiment 1 of the present invention provides a monitoring me...

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Abstract

The invention discloses a monitoring method and system based on a door motion state. The method comprises the steps of detecting a door by use of OpenCV and obtaining a feature point of the door; recording a first parameter of the feature point in a video frame i relative to a door initial state; recording a second parameter of the feature point in a video frame i+1 of post motion of the door relative to the door initial state; performing contrastive analysis on the first parameter and the second parameter to determine the position of the door; and repeating above steps in preset time intervals, and judging the motion state of the door. Through adoption of the method, the motion process from closing to opening or from opening to closing of the door is realized, the whole process is dynamically monitored, and the method has high practicability.

Description

technical field [0001] The invention relates to the field of smart home, in particular to a monitoring method and system based on door motion state. Background technique [0002] At present, the security system is undoubtedly the most accepted by consumers in the smart home market. A complete security system includes video surveillance, alarm system and video intercom. The alarm system plays a vital role in the entire security system, using security surveillance cameras to monitor suspicious areas, and alarming suspicious intrusions in the area to achieve the purpose of protecting the owner's property. [0003] In recent years, thanks to the continuous development of computer technology and the continuous improvement of computer performance, the method of detecting intrusion through video surveillance has been greatly improved. The application date is 2014.08.13, and the application publication number is CN 103986906 A patent "door opening and closing detection method based...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/18G06T7/20G06T7/00
Inventor 张功振吴振文
Owner FUJIAN STAR NET COMM
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