Method for controlling automatic zoom of PTZ (pan/tilt/zoom) camera

A technology for controlling PTZ cameras and PTZs, which is applied in camera, image analysis, image data processing, etc., to achieve the effects of improving work efficiency, easy implementation, and simplifying complexity

Inactive Publication Date: 2011-05-04
TIANJIN YAAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a method for controlling the automatic zooming of the pan-tilt camera, aiming at the automatic zooming of the pan-tilt camera

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  • Method for controlling automatic zoom of PTZ (pan/tilt/zoom) camera
  • Method for controlling automatic zoom of PTZ (pan/tilt/zoom) camera
  • Method for controlling automatic zoom of PTZ (pan/tilt/zoom) camera

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Embodiment Construction

[0017] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0018] figure 1 A flow chart of a method for controlling automatic zooming of a pan-tilt camera provided by an embodiment of the present invention is shown. The details are as follows:

[0019] A method for controlling the automatic zooming of a pan-tilt camera, comprising:

[0020] In step S101, set up the file information that comprises the pan-tilt hoisting height, the pan-tilt camera information;

[0021] In step S102, an instruction is received, the automatic zoom function of the pan-tilt camera is turned on, and the vertical rotation angle of the pan-tilt is obtained in real time;

[0022...

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Abstract

The invention is suitable for the field of safety monitoring, and provides a method for controlling the automatic zoom of a PTZ (pan/tilt/zoom) camera. The method comprises the following steps: establishing archival information comprising the hoisting height of a PTZ and the information of the PTZ camera; receiving an instruction, then opening the automatic zoom function of the PTZ camera, and acquiring the vertical rotation angle of the PTZ in real time; according to the current vertical rotation angle and archival information of the PTZ, calculating the focal distance of the PTZ camera; and according to the calculated focal distance of the PTZ camera, zooming the PTZ camera to the focal distance, or zooming the PTZ camera to an integer multiple of the focal distance closest to the calculated focal distance. The automatic zoom method provided by the invention has the advantages that because the zoom parameter of the PTZ camera can automatically be set according to the actual needs of a monitoring scene, the method can be applied more flexibly without carrying out zoom control by detecting the actual size of a target, thereby simplifying the complexity of a target tracking algorithm, facilitating implementing the target tracking more easily, and improving the working efficiency of the monitoring personnel.

Description

technical field [0001] The invention belongs to the field of video monitoring, in particular to a method for controlling the automatic zooming of a pan-tilt camera. Background technique [0002] At present, the PTZ camera is one of the most commonly used surveillance front-end devices in the field of surveillance today. The pan-tilt camera can drive the camera to rotate in different directions through the rotation of the pan-tilt, and can observe targets or scenes in different distances by adjusting the zoom of the camera, so that it can monitor a very large range. When the PTZ camera shoots a dynamic target, if the focal length of the camera is fixed, the size of the target on the screen will also change with the distance from the target. To maintain a certain accuracy of observation, it is necessary to keep the imaging size of the target at an appropriate Within the size range, the current PTZ cameras support manual zoom, and the image size of the target can be controlled...

Claims

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Application Information

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IPC IPC(8): H04N7/18G03B13/36G06T7/00
Inventor 张羽
Owner TIANJIN YAAN TECH CO LTD
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