Door opening and closing detection method based on monitoring videos

Abstract

The invention discloses a door opening and closing detection method based on monitoring videos. A corresponding image frame when a detected room door is closed serves as a reference frame, a background model of the detected room door is obtained according to the reference frame, background subtraction is carried out on a room door area in a detected video frame through the background model to work out a foreground image, and the opening and closing state of the detected door is determined by extracting a feature straight line of the foreground image and then using the horizontal position of the feature straight line and a door crack in the background model. The door opening and closing detection method based on monitoring videos achieves the function of automatically detecting the opening and closing state of the room door through the simple combined technologies such as motion foreground detection and digital image processing, and is simple, low in resource expense and suitable for the application of an embedded type system like video monitoring. The whole room door area is directly detected, the opening and closing state is determined according to the door crack position, the inference generated when a person or an object shields the room door is effectively avoided, the detection accuracy is high, universality is high, no monitoring blind spot exits, and the safety coefficient of monitoring is improved.

Description

technical field [0001] The invention belongs to the field of video image analysis and artificial intelligence, and more specifically relates to a monitoring video-based door opening and closing detection method. Background technique [0002] In the field of security monitoring, monitoring the opening and closing status of doors is an extremely important monitoring parameter (that is, in a monitoring scenario that has existed for a long time-personnel access monitoring of specific room doors). Initially, the scene is directly detected by setting up full-time personnel. [0003] In recent years, thanks to the development of information technology, video surveillance has been widely used. Usually, it is enough to collect video by detecting video surveillance. The monitoring video of the TV wall or computer is used to monitor the opening and closing status of the door, and once the monitoring personnel finds an abnormal situation, an alarm will be issued. [0004] Today, with ...

AI Technical Summary

Problems solved by technology

[0005] Door opening and closing detection based on hardware sensors, this method can meet most of the detection requirements, but this method has a disadvantage that the detection cost is high, and the sensitivity is not enough, it is prone to false detection and the state of the first floor

In addition, there is an important defect, that is, the detection range of the sensor is usually limited, there are certain monitoring blind spots, and there are certain potential safety hazards. Therefore, a door opening and closing detection method with high safety factor and low cost has great potential in the field of practical application. strong demand

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