Substation three-dimensional live-action monitoring stationing method based on nonlinear parameter optimization calibration

A substation and non-linear technology, applied in image data processing, instruments, calculations, etc., can solve problems such as large investment in equipment, insufficient camera coordination, and inability to substation scenarios, and achieve the effect of avoiding waste of funds

Inactive Publication Date: 2014-05-28
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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Problems solved by technology

The inherent defects of such a scheme are: (1) It fails to effectively combine the actual situation of each different substation, resulting in the problem that the investment in equipment is large, but there are still monitoring dead en

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  • Substation three-dimensional live-action monitoring stationing method based on nonlinear parameter optimization calibration
  • Substation three-dimensional live-action monitoring stationing method based on nonlinear parameter optimization calibration
  • Substation three-dimensional live-action monitoring stationing method based on nonlinear parameter optimization calibration

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Embodiment Construction

[0036] Various details of the present invention will be described in detail below through specific implementation examples in conjunction with the accompanying drawings.

[0037] The parameter calculation and data processing methods involved in this substation 3D real scene monitoring point layout method based on nonlinear parameter optimization and calibration are as follows:

[0038] Based on camera drawings figure 2 The perspective projection transformation shown in the figure gives the camera internal parameter matrix shown in formula (1), which includes the vertical angle of view of the camera Image aspect ratio Camera near clipping plane and camera far clipping plane Wait for 4 unknown parameters:

[0039]

[0040] Without loss of generality, assume that the camera lens is 1 / 3 inch, and the imaging aspect ratio is 4 / 3; r with It is the default parameter for the analog camera. definition is the focal length, is the image width, is the image height, ...

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Abstract

The invention discloses a substation three-dimensional live-action monitoring stationing method based on nonlinear parameter optimization calibration. The method comprises the steps that a three-dimensional substation physical model is imported; an area coverage to be monitored is acquired based on the model, and the type and the physical parameters of a camera are determined; a position hypothesis test based on the area to be monitored is carried out: three monitor points are selected on the boundary of the area to be monitored, and the coordinates of the points are calculated; based on the relationship between a model coordinate system and a camera coordinate system, the physical position and the orientation of the camera in a three-dimensional space are derived; hypothesis verification based on camera object positioning is carried out: based on a perspective projection principle, the relationship between the imaging picture of camera motion trajectory and a covered three-dimensional space entity area is analyzed; and through visualization, the three-dimensional space entity area of camera projection and the area to be monitored is compared. Compared with a traditional method, the method has the advantages that the monitor area of the same size is ensured, and at the same time the system configuration is optimized, and unnecessary device input is saved.

Description

technical field [0001] The invention relates to a method for monitoring and arranging points for monitoring the working state of power equipment in a substation area and a three-dimensional real-scene camera for scenes, and in particular to a three-dimensional real-scene monitoring and arranging method for a substation based on nonlinear parameter optimization and calibration for visual monitoring of the working state and scene of power equipment in a substation area method. Background technique [0002] Since the later period of the "Eleventh Five-Year Plan", smart substations have become an important part of the smart grid, especially the evolution of unattended substations to high-level substations, which requires all-round monitoring and monitoring of supporting substation scenarios, including power equipment and There are two parts to the environment. Therefore, the reasonable layout of three-dimensional video monitoring points is one of the technical problems to be so...

Claims

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Application Information

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IPC IPC(8): G06T7/00
Inventor 胡亚平陈皓邓应松陈炯聪曾宪立刘振国谢国财
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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