Over the years, the issue of campus security has become a "Curse". From time to time, the news of "crazy people entering the school and cutting people" will appear in some places, which makes people creepy. Campus security construction has its particularity. Campus is not only a place for children to grow and learn, but also in a special position in society, that is, a public place and a place that can not be so open. It is still difficult to handle campus security management properly.

Characteristics of campus security
Campus security monitoring system has something in common with ordinary security, but it also has many own characteristics and requirements:

(1) Many monitoring points: the school is densely populated, and the scope of students' activities will not be fixed, which requires monitoring to every corner of the campus. Therefore, it is necessary to install a camera probe in the scope of student activities (except private areas) in the school, so as to comprehensively ensure the security of student activities.

(2) Large monitoring area: the campus area of the school is generally large and there are many monitoring points. When the monitoring system is deployed, with the input of HD probe, the line requirements are relatively high, especially the bandwidth requirements will be higher and higher.

(3) Remote alarm: students can give a real-time alarm when they are in school. After students and faculty leave school, they can start a remote alarm. In case of personnel intrusion at the monitoring point, they can upload the alarm information to the network monitoring center through the network, automatically switch the image to the site, automatically record the video, and transmit the alarm information and pictures to the teacher on duty, It is convenient to take measures in time.

(4) Prevention of campus violence: when campus violence occurs or may occur, personnel at all levels can touch the emergency button to call the 110 alarm center to prevent or stop campus violence.

(5) Evidence collection for accidental injury: students should be able to record all monitoring points during school, so as to take the initiative to provide evidence in case of accidental injury.

(6) Other applications: the security system should be combined with the daily work of the school to give full play to its role.

Application and function of campus security

With the continuous investment of HD probes, the technical requirements for video analysis are becoming higher and higher, and the corresponding new product applications are also brought.

1. Binocular Technology

The core purpose of binocular stereo technology is to improve the accuracy of recognition. Because the field of view formed by stereo vision technology contains three-dimensional geometric information of objects, it can effectively set detection rules, eliminate interference factors such as light and shadow, and greatly improve the accuracy of intelligent analysis. If HD technology is a tactical measure to improve the accuracy of analysis by improving the available pixels, the impact of binocular stereo vision technology on the accuracy of video analysis is strategic. Binocular stereo vision technology is based on the principle of parallax, and uses imaging equipment to obtain two images of the measured object from different positions, and obtains the three-dimensional geometric information of the object by calculating the position deviation between the corresponding points of the image.

Two or more cameras are used to measure the three-dimensional position coordinates and attitude of the free moving body in the field of view, determine the core position of the moving target, and track the moving target with high precision according to the calibration results.