Single-point calibration method for multi-target automatic tracking and monitoring system

Abstract

The invention discloses a single-point calibration method for a multi-target automatic tracking and monitoring system. The method comprises the steps of installing a traditional camera and a pan / tilt / zoom (PTZ) camera on the same vertical line, and setting a certain height difference on the vertical line between the traditional camera and the PTZ camera; collecting pictures by using the traditional camera and the PTZ camera, and selecting a marker near the central point of the picture of the traditional camera as a reference point of the traditional camera; moving the PTZ camera so as to enable the central point of the picture of the PTZ camera to be aligned with the reference point of the traditional camera, and calculating the horizontal view angle and the vertical view angle of the PTZ camera; calculating the position coordinates of the PTZ camera according to the reference point of the traditional camera, the central point of the picture of the PTZ camera as well as the horizontal view angle and the vertical view angle of the PTZ camera; adjusting the horizontal view angle and the vertical view angle of the PTZ camera according to the actual situation, and reducing the positioning deviation of the position coordinates of the PTZ camera to complete single-point calibration. After the method is used, the calibration process can be completed by only setting a group of points, so that the problems that in the prior art, the calibration process is complicated, the flexibility is low, the calibration success rate can not be guaranteed, and the like are solved.

Description

technical field [0001] The invention relates to the technical field of single-point calibration methods, in particular to a single-point calibration method used in a multi-target automatic tracking and monitoring system. Background technique [0002] With the development of science and technology and the needs of the establishment of smart cities, in the field of video surveillance, a multi-target automatic tracking and monitoring system based on gun-ball linkage (hereinafter referred to as the gun-ball linkage system) has begun to appear. The system is mainly used to solve the problem that the traditional camera (hereinafter referred to as the gun camera) has a poor ability to capture details due to resolution limitations, and the PTZ camera (hereinafter referred to as the dome camera) has a strong ability to capture details but the monitoring angle is too small. A monitoring method with a combination of cameras. Traditional cameras are used to analyze the intelligent beha...

AI Technical Summary

Problems solved by technology

[0012] In order to overcome the shortcomings and deficiencies of the prior art, the present invention provides a single-point calibration method used in a multi-target automatic tracking and monitoring system to solve the complex calibration process and low flexibility in the prior art. The success rate of calibration cannot be guaranteed, etc.

Images