Intrusion detection method based on displacement of light spot patterns

Abstract

The invention provides an intrusion detection method based on displacement of light spot patterns. The intrusion detection method comprises the following steps of adjusting the positions of a camera and a light source, shooting initial light spot images in a detection area; shooting by the camera, and transmitting the shot light spot images to a host; comparing the images shot by the camera with the initial light spot images by the host, and judging whether foreign objects intrude or not; alarming if the foreign objects intrude; and returning for continuing detecting if the foreign objects do not intrude. According to the intrusion detection method, the detection ranges are changed by changing the number of light spots, light spot matrix patterns and light source positions, and a capability of detecting intrusion is realized in the variable ranges. The detection real time and the efficiency are improved by adjusting the light spots and the parameters of an image sensor, and the intrusion detection method is easier to implement and low in cost and has a extremely great application prospect at the same time.

Description

technical field [0001] The invention belongs to the technical field of building security, and relates to the detection of foreign object intrusion in a security system, in particular to an intrusion detection method based on the displacement of light point patterns. Background technique [0002] With the improvement of people's living standards and the increase of security awareness, the application of security systems is becoming more and more extensive. At present, the technical means used in the security system mainly include: protection technology based on traditional sensors (infrared, door magnetism, etc.), protection technology based on biometrics and protection technology based on video surveillance. Among them, traditional sensors have relatively simple functions and are usually installed At the entrance and exit, the alarm needs to be triggered passively. However, once the triggering characteristics of the sensor are mastered and this line of defense is avoided, th...

AI Technical Summary

Problems solved by technology

Third, for the scenarios of extensive deployment and temporary deployment, the product cost needs to be controlled to a certain extent

Fourth, deployment should not be too complicated

Fifth, the security system needs to have a certain degree of concealment

In the field of security, missed detection will cause great safety hazards, and there is zero tolerance for the existence of missed detection; while false detection will cause unnecessary transfer of personnel and equipment, wasting manpower and material resources

Therefore, this kind of system shoulders the task of reducing the false detection rate and missed detection rate at the same time, which is a great difficulty for analyzing and identifying algorithms and system construction.

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