Field of view coordinate mapping method, device, storage medium and PTZ camera for PTZ camera

Abstract

The invention discloses a method for mapping coordinates of a field of view of a pan / tilt camera, comprising: performing distortion correction and spherical projection processing on the boundary midpoint coordinates of a first photographed image of a first field of view and the area vertex coordinates of a first monitoring area; The first central point coordinates of the first field of view and the processed boundary midpoint coordinates obtain the coordinate mapping relationship, and map the processed area vertex coordinates according to the coordinate mapping relationship; when the pan-tilt camera turns from the first field of view to the second In the case of two fields of view, according to the coordinates of the second center point of the second field of view and the coordinate mapping relationship, the mapped area vertex coordinates are subjected to mapping inverse processing, spherical projection inverse processing, and distortion correction inverse processing; according to the inverse processed area vertex coordinates A second monitoring area mapped on the first monitoring area in the second field of view is acquired. The invention can realize the automatic mapping of the coordinates of the pan-tilt camera in different fields of view, so that the monitoring area corresponding to any field of view can be automatically mapped in another field of view.

Description

technical field [0001] The invention relates to the technical field of computer vision, and in particular to a method and device for mapping field coordinates of a pan-tilt camera, a computer-readable storage medium, and a pan-tilt camera. Background technique [0002] At present, with the improvement of people's safety awareness, the use of surveillance cameras is becoming more and more common. In the actual use of surveillance cameras, each surveillance camera will preset a fixed monitoring area. For the pan-tilt camera, because it has a pan-tilt itself, it can be rotated to monitor different areas. The field of view of the camera is not fixed, resulting in The captured images are usually distorted, and it is impossible for the monitoring area preset by the user under one field of view to take effect in another field of view. Contents of the invention [0003] The technical problem to be solved by the embodiments of the present invention is to provide a pan-tilt camera ...

AI Technical Summary

Problems solved by technology

In the actual use of surveillance cameras, each surveillance camera will preset a fixed monitoring area. For the pan-tilt camera, because it has a pan-tilt itself, it can be rotated to monitor different areas. The field of view of the camera is not fixed, resulting in The captured images are usually distorted, and it is impossible for the user-preset monitoring area under one field of view to take effect in another field of view

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