Image-analysis-based pan/tilt/zoom (PTZ) camera preset position control method

A technology of image analysis and control method, which is applied in the direction of image communication, color TV parts, TV system parts, etc., can solve the problems of inaccurate pre-position accuracy of the pan/tilt, few preset points, etc., and achieve high performance The effect of high price ratio, increased number and accuracy, and high positioning accuracy

Inactive Publication Date: 2012-06-13
中电科华北网络信息安全有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the technical problems of inaccurate and few preset position points of the existing pan/tilt preset position, and provide a k...

Method used

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  • Image-analysis-based pan/tilt/zoom (PTZ) camera preset position control method
  • Image-analysis-based pan/tilt/zoom (PTZ) camera preset position control method
  • Image-analysis-based pan/tilt/zoom (PTZ) camera preset position control method

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Embodiment Construction

[0022] The cloud platform preset position control method based on image analysis in the present embodiment, it comprises the following steps:

[0023] 1) Set the hard preset position: set the preset position of the PTZ camera itself as a hard preset position, and select the object to be observed among several targets delineated in the hard preset position;

[0024] 2) Set the soft preset position: move the PTZ camera so that the object to be observed is located in the center of the video picture of the PTZ camera, and store the picture as the template picture information of the soft preset position on the computer;

[0025] 3) When the PTZ camera leaves the soft preset position and needs to return to the soft preset position again, follow the steps below:

[0026] a. First return to the hard preset position set in step 1),

[0027] b. Record the picture of the current position of the PTZ camera,

[0028] c. Carry out image analysis and comparison between the current picture ...

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Abstract

The invention relates to an image-analysis-based pan/tilt/zoom (PTZ) camera preset position control method, which mainly aims to solve the technical problems of low preset position accuracy and small preset position number of the conventional pan/tilt/zoom (PTZ) camera. The technical scheme is that: the image-analysis-based PTZ camera preset position control method comprises the following steps of: 1) setting a hardware preset position; 2) setting a software preset position; and 3) when a PTZ camera leaves the software preset position, and is required to return to the software preset position again, performing the following steps of: a, returning to the hardware preset position set in the step 1), b, recording a picture at the current position of the PTZ camera, c, performing image analysis and comparison on the recorded current picture and a template picture at the software preset position, and determining the positional deviations of the two pictures, and d, calculating the horizontal rotating time and vertical rotating time of the PTZ camera according to the horizontal and vertical deviations of the two pictures until both the positional deviations x and y of the two pictures are equal to 0, namely the PTZ camera accurately returns to the software preset position.

Description

technical field [0001] The invention relates to a method for controlling a pan-tilt preset position based on image analysis, which belongs to an automatic control method for a video monitoring system. Background technique [0002] In order to quickly and accurately locate the target point in the video surveillance system, it is necessary to adopt the method of pre-positioning the pan-tilt camera system. The monitoring personnel aim the PTZ camera at the target position in advance, and set this position as the preset position. When the monitoring personnel need to locate the target position, they only need to send a command to the PTZ control system to locate the preset position, and then they can quickly locate the target position and find the target accurately. However, the precision of medium-sized and heavy-duty pan / tilt preset positions used in traditional video surveillance systems is not very high, and the number of preset positions is generally less than 256, which c...

Claims

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Application Information

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IPC IPC(8): H04N5/232
Inventor 张游杰马俊明
Owner 中电科华北网络信息安全有限公司
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