Monitoring target shooting and tracking method and system

Abstract

The invention provides a monitoring target shooting and tracking method and system. When the calibration target is sequentially moved to multiple positions, the main camera is controlled to align with the calibration target to shoot and record the current rotation and focusing parameters of the main camera corresponding to the multiple positions to form a first lookup table, Control the auxiliary camera device to align with the calibration target in turn and record the tracking rotation and focusing parameters of each auxiliary camera device corresponding to multiple position points to form a second look-up table; when the monitoring target enters the site to be monitored, control the main The camera is aimed at the monitoring target and records the rotation and focus parameters of the main camera at this time, and at the same time looks up the table in the first look-up table to obtain the current position parameter of the monitoring target; the auxiliary camera is made to obtain the current position parameter and is searched in the second look-up table. Look up the table in the table to obtain the corresponding rotation and focus parameters of the auxiliary camera device; control the auxiliary camera device to immediately aim at the monitoring target according to the corresponding rotation and focus parameters.

Description

technical field [0001] The invention relates to the field of surveillance camera, in particular to a method and system for photographing and tracking a surveillance target. Background technique [0002] At present, the lighting system of high-zoom surveillance cameras is mainly based on coaxial light sources. Small and medium-sized cameras are often equipped with multiple visible or infrared LED lights next to the lens, while the light source of large cameras is a searchlight set up next to the camera, which rotates with the direction of the lens. However, the coaxial light source has the following disadvantages: (1) Usually the light source does not zoom in on the angle of illumination, so when the object of interest is far away and the camera is zoomed out to tens of times, the lighting intensity is not bright enough because the distance is too far; (2) ) The distance between the coaxial light source and the camera lens is close. When it is raining, snowing or foggy, part...

AI Technical Summary

Problems solved by technology

However, the coaxial light source has the following disadvantages: (1) Usually the light source does not zoom in on the angle of illumination, so when the object of interest is far away and the camera is zoomed out to tens of times, the lighting intensity is not bright enough because the distance is too far; (2) ) The distance between the coaxial light source and the camera lens is close. When it is raining, snowing or foggy, part of the strong light that goes out will be reflected back immediately, which will cause the shooting picture to be overexposed or interfere with bright spots; (3) The light source marks the camera’s Position, so that the monitored person (such as an enemy or thief) is easy to defend

For example, when the camera finds something unusual in low-light or infrared mode, it can directly turn on the lighting or street lights in that corner. However, if the area is larger or has terrain restrictions, such as fish farms or minefields, fixed area lighting cannot cover it. When it is necessary, people need to directly turn the searchlight or camera on it to illuminate the area, similar to stage spotlight lighting, this kind of lighting effect is the best, the clearest, and the better the warning effect to the monitored person, but generally Must rely on manpower to concentrate on control to align with moving targets

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