Method for extracting movement track based on PTZ mobile camera

Abstract

The invention provides a method for extracting a movement track based on a PTZ mobile camera. A target object is detected through the PTZ mobile camera and a pedestrian detection program; the mobile camera rotates at a corresponding angle, so that the target object is at the middle position of an image captured by the camera all the time, and keeps tracking the target object. The position of the target object in the current image in a current coordinate system can be calculated on the basis of size information of the target object and the information of angle change of the PTZ mobile camera, so as to determine the coordinate of the target object in the total coordinate system, namely the position in a global environment; finally, the unreliable data point is removed through a filter function, and correct position points are connected to form the movement track of the global environment. The method disclosed by the invention is high in precision and high in speed, and the extraction effect on the movement track is better than that of the existing method.

Description

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AI Technical Summary

Benefits of technology

The technical effect that this patented technology allows for capturing images from moving objects around while maintaining their position within an area by analyzing them' movements over time. This makes it easier than previous methods because they only needed one sensor per frame instead of multiple sensors at once.

Problems solved by technology

This patents describes how abnormal behaviors occur frequently during human activities such as driving at nights or navigating around obstacles like trees. These movements make up about 70%-85% of all traffic accidents worldwide - making them one of the main causes behind road crashes and injuries among drivers' passengers. Current solutions involve analyzing images from surveillance devices attached onto vehicles, which requires expensive equipment and trained operators who manually adjust the imagery settings accordingly.

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