Method for realizing panoramic holder control based on PTZ (Pan/Tilt/Zoom) return technology of dome camera

Abstract

The invention discloses a method for realizing panoramic holder control based on a PTZ (Pan / Tilt / Zoom) backhaul technology of a dome camera. The method comprises the following steps: field angle calculation: calculating a horizontal field angle and a vertical field angle of the dome camera; calculation of field coordinates of the dome camera: calculating the field coordinates of the dome camera; panorama view coordinate calculation: calculating scanning parameters of the panorama, and splicing to generate a target panorama and panorama view coordinates; mapping the screen coordinates of the panorama into the coordinates of the dome camera; mapping the boundary coordinates of the visual range of the dome camera into screen coordinates; carrying out panoramic screen frame selection and back calculation on the focal length zoom multiple of the dome camera; calculating a zoom numerical value according to a horizontal field angle of a frame selection rectangle; and panorama holder control: when any point is clicked on the panorama, the dome camera automatically rotates and is subjected to zoom focusing to a visual field range corresponding to the picture frame area of the panorama. According to the invention, more visual, accurate and convenient control of the dome camera is realized, and the user experience is effectively improved.

Description

technical field [0001] The present invention relates to an image processing method, in particular to a method for realizing panorama pan-tilt control based on the ball machine PTZ return technology. Background technique [0002] At present, in the software that controls the dome camera through the PTZ, the control method of the PTZ is usually based on rotating the video screen of the dome camera to determine the location scene to be watched, that is, to confirm the position by observing the real-time picture taken by the dome camera while rotating the dome camera scene, or use the pre-set preset position (coordinates) to control the dome camera. For example, by using the acquired panoramic image, select a preset area in the panoramic image, and convert the position coordinates in the selected panoramic image into spherical The camera can identify the position coordinates, and when the speed dome rotates to the monitoring scene corresponding to the position coordinates, it w...

AI Technical Summary

Problems solved by technology

[0006] 3) The points on the panorama cannot be in one-to-one correspondence with the center point of the viewing angle of the dome camera, and the precise control of the viewing angle cannot be achieved

[0007] 4) Because it is necessary to select the preset area on the panorama in advance and save its corresponding relationship, then once the preset is reset by other systems in the middle, it will cause the panorama to be controlled to an incorrect position or to re-establish the index Correspondence

[0008] 5) It is not possible to draw a frame on the panorama mosaic, and it is not possible to let the ball machine rotate to this area and automatically zoom and focus to the field of view corresponding to the frame

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