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A method for generating the optimal monitoring position according to the monitoring target position

A monitoring target and optimal technology, applied in color TV parts, TV system parts, TV and other directions, can solve the problems of low installation accuracy, low flexibility, unfavorable imaging quality, etc., to avoid waste of money and convenient Measure, avoid the effects of inflexibility

Active Publication Date: 2018-07-27
CHENGDU UNIV OF INFORMATION TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The cameras in the video surveillance system in the above-mentioned prior art are generally installed by visual layout method. This method has low flexibility, low installation accuracy, and is not conducive to image quality. At the same time, the installation process is also not conducive to capital, time and labor costs. Control and other issues, the present invention provides a method for generating the optimal monitoring position according to the monitoring target position

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  • A method for generating the optimal monitoring position according to the monitoring target position

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Embodiment 1

[0022] Such as figure 1 As shown, a method for generating an optimal monitoring position according to the monitoring target position includes the following steps in sequence:

[0023] S1: Establish a three-dimensional physical model of the monitored area, obtain the central point position and external dimensions of the monitoring target in the three-dimensional physical model; collect camera lens parameters, and the lens parameters include the width of the lens imaging element and the focal length of the lens imaging element;

[0024] S2: Obtain the distance between the camera and the monitoring target, and obtain the distance through the following method: Dis=(Wf) / (wλ)

[0025] Among them, in the above formula, f is the focal length of the lens imaging element, W is the width of the monitoring target, w is the width of the camera lens imaging component, Dis is the distance between the camera and the monitoring target, and λ is the proportion of the monitoring target displayed...

Embodiment 2

[0029] This embodiment is further limited on the basis of Embodiment 1: in order to quantify the position of the camera and the position of the monitoring target, the three-dimensional physical model is established in a three-dimensional space Cartesian coordinate system.

[0030] In order to obtain the exact position coordinates of the camera in the three-dimensional space Cartesian coordinate system, the position coordinates of the center point position of the monitoring target in the three-dimensional space Cartesian coordinate system are O(O x , O y , O z ), the specific numerical value of the optimal monitoring position coordinates satisfies the following equation:

[0031] Wherein, x, y, and z respectively represent the horizontal axis coordinate value, the vertical axis coordinate value and the vertical axis coordinate value of the optimum monitoring position; The radius of the intersecting circle of the spherical surface; the angle is the angle between the distance...

Embodiment 3

[0033] This embodiment is further limited on the basis of Embodiment 1: in order to enable the camera to capture the overall image of the upper side of the surveillance target, the surveillance target width W is the maximum width of the surveillance target width.

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Abstract

The invention discloses a method for generating an optimal monitoring position according to the position of a monitoring target, which comprises the following steps: establishing a three-dimensional physical model of the monitored area, obtaining the center point position and external dimensions of the monitoring target in the three-dimensional physical model, and collecting camera lenses parameters; calculating the distance between the camera and the monitoring target; obtaining the optimal monitoring position in three steps. Through the method provided by the present invention, the camera preset position can be automatically generated according to the position of the monitoring target, so that the camera can quickly and accurately turn to the preset position, avoiding the shortcomings of insufficient flexibility, low accuracy, and low precision of the visual layout method. The waste of funds caused by multiple on-site scene surveys is avoided.

Description

technical field [0001] The invention relates to the technical field of a method for selecting an installation point of an image acquisition camera, in particular to a method for generating an optimal monitoring position according to a monitoring target position. Background technique [0002] The unattended substation system can realize unattended monitoring of the complex environment of the substation, and realize distributed monitoring and centralized management of remote equipment. Among them, the video monitoring system, as an image acquisition and analysis unit, is an important component of the unattended substation system part. [0003] As the basis for supporting unattended substations, the video surveillance system needs to monitor the operating status of the equipment in real time. At present, the layout of the cameras used as the front-end equipment of the video surveillance system is first installed according to the two-dimensional drawings, and then the position ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/18H04N5/232
CPCH04N7/18H04N23/66H04N23/60
Inventor 谢晓娜常政威巨辉严寒冰沈艳蒋世奇
Owner CHENGDU UNIV OF INFORMATION TECH
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