Method and device for achieving 3D preset accurate linkage between camera and pan-tilt

Abstract

The invention discloses a method and device for achieving 3D preset function accurate linkage between a pan-tilt and a camera. The method for achieving 3D preset function accurate linkage between the pan-tilt and the camera comprises the steps that after the camera is installed on the pan-tilt, the deviation angle of the camera is calculated and is converted into the corresponding motor step number according to the pan-tilt motor movement locus, angle compensation is carried out in different directions through motor movement when the 3D preset function is executed, and therefore accurate linkage between the camera and the pan-tilt is achieved when the 3D preset function is executed. The device for achieving 3D preset function accurate linkage between the pan-tilt and the camera comprises a test card, an image analysis module, an offset calculation module and a 3D preset calibration module. According to the method and device for achieving 3D preset function accurate linkage between the pan-tilt and the camera, as different optical axis offsets are caused by different reasons when different cameras leave a factory, offset calculation and equipment characteristics are combined to carry out system compensation, and therefore the 3D preset function accuracy is achieved.

Description

technical field [0001] The invention belongs to the technical field of video monitoring, and in particular relates to a method and a device for realizing precise linkage of 3D preset functions of pan-tilt cameras. Background technique [0002] With the development of society, the field of surveillance is becoming popular all over the world with an unprecedented momentum. The demand for video surveillance in the streets, cities and villages is increasing, and the requirements for the performance of surveillance products are also getting higher and higher. In the final analysis, the role of video surveillance is to monitor and track, but in the actual application process, there are often problems that the tracking target object is too far away from the gimbal, or the front-end product fails to clearly display the outline of the target object, resulting in the target being lost or unrecognizable. The 3D preset function that came into being is an indispensable technical indicato...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the embodiment of the present invention is to provide a method and device for realizing the precise linkage of the 3D preset function of the pan / tilt camera, aiming to solve the inaccurate linkage existing in the existing method, that is, the target object is moved due to the deviation of the optical axis of the camera itself. When zooming in, the object shifts out of the monitor window

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