Method of controlling holder camera to automatically track target

Abstract

The invention relates to a method of controlling a holder camera to automatically track a target. The method comprises the following steps. A tracking model is automatically chosen. A video frequency processing module automatically chooses an automatic tracking model and a global search model according to the tracking state of the target. The processing process of the automatic tracking model is that the video frequency processing module judges the state of the holder camera and after the tracked target is matched, control orders are sent according to the position and size of the target to regulate the position and the focal distance of the camera. The processing process of the global search model is that the video frequency processing module detects and matches the target through a taking turn manner in a plurality of search areas of a monitored area until the tracked target is found. The invention has reasonable design, realizes the automatic tracking function of the camera on the target, ensures that the position and size of the target are suitable for monitoring, has the advantages of high tracking precision, strong real-time property, low cost, flexible expansion and the like, facilitates the use of monitoring staff and improves the work efficiency of the monitoring staff.

Description

Technical field [0001] The invention belongs to the field of video monitoring, in particular to a method for controlling a pan-tilt camera to automatically track a target. Background technique [0002] PTZ camera is one of the most commonly used surveillance front-end equipment in the surveillance field today. The monitoring personnel can control the pan-tilt camera to observe every corner of the monitoring area in real time, and can also customize various functions for the pan-tilt camera, such as preset position, cruise, tracking, etc. The monitoring personnel can use the pan-tilt camera according to the characteristics of the monitoring area Customize various functions to make the PTZ camera run according to preset commands. However, the real world is ever-changing, and the preset monitoring route cannot fully meet the actual needs. In fact, the real-time video information provided by the PTZ camera can be used as an important reference for PTZ control. With the development ...

AI Technical Summary

Problems solved by technology

Another problem existing in the existing target tracking system is how to control the pan-tilt servo module to realize the automatic tracking of the target according to the target information. Although there are many descriptions of the video analysis part of the target tracking system, the description of the camera control method is not. common

The realization of the target tracking system needs to master the control state of the camera by the servo control system, and generally requires the servo control system to provide information feedback on the control state. The realization of such a servo control system is relatively complicated, and because the video frame rate can generally reach 25 frames per second , but the response speed of the pan-tilt camera controlled by the servo control system to the control command is difficult to meet this requirement, and there are differences in the response speed and accuracy of the control command by different servo control systems. bring great difficulty

Once the response of the control device to the control command does not meet the requirements, the target may be lost in the image, and the image analysis algorithm will lose its effect, which will inevitably lead to the failure of tracking. Therefore, it can be said that accurate control of the tracking device is also the realization of automatic target tracking. A vital part of tracking

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