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Smooth transition processing method and device for boundary contour of mountainous area micro-terrain

A processing method and processing device technology, applied in image data processing, 3D image processing, 3D modeling, etc., can solve the problem of low accuracy of wind field simulation analysis results, so as to weaken the impact of sudden changes on incoming flow and improve accuracy Effect

Inactive Publication Date: 2017-12-01
CHINA ELECTRIC POWER RES INST +3
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Problems solved by technology

[0004] In view of this, the present invention proposes a method and device for processing the smooth transition of the micro-terrain boundary contour in mountainous areas, aiming to solve the problem of low precision of wind field simulation analysis results caused by the use of arc transition in current surface modeling

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  • Smooth transition processing method and device for boundary contour of mountainous area micro-terrain
  • Smooth transition processing method and device for boundary contour of mountainous area micro-terrain
  • Smooth transition processing method and device for boundary contour of mountainous area micro-terrain

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[0026] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0027] Method example:

[0028] see figure 1 , figure 1 It is a flow chart of the method for processing the smooth transition of the micro-terrain boundary...

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Abstract

The invention provides a smooth transition processing method and a device for the boundary contour of the mountainous area. The method comprises the following steps of selecting step, difference step and determination step. During the selecting step, a plurality of points in the boundary contour of a pre-constructed and to-be-processed mountainous area micro-terrain model are selected. During the difference step, the single-section cubic spline interpolation on each point is conducted respectively by utilizing a pre-established functional expression. During the determination step, the three-time spline difference result of each point is determined according to the preset boundary condition of the single-section three-time spline difference value of each point. According to the invention, the smooth transition of the boundary contour of the to-be-processed mountainous area micro-terrain is realized by adopting the sample spline three times. Furthermore, the air flow is ensured to smoothly flow through a transition section as much as possible in the transition process. Therefore, the influence of the mutation on the incoming flow is greatly weakened, so that the method is closer to the actual situation. The precision of the wind field simulation analysis result is improved.

Description

technical field [0001] The invention relates to the technical field of wind field characteristics of micro-topography in mountainous areas, in particular to a processing method and device for smooth transition of boundary contours of micro-topography in mountainous areas. Background technique [0002] When the wind flows through areas with complex terrain such as mountains and hills, the wind speed and wind speed profile in the atmosphere near the ground will change significantly. Buildings and structures designed according to flat ground codes, such as transmission lines, are more vulnerable to damage in near-ground wind fields in mountainous areas. Micro-topographic flow field simulation is one of the feasible ways to clarify this potential risk, and micro-topographic surface modeling is the key to influencing the results of wind field simulation analysis. [0003] The traditional surface modeling adopts the transition of circular arc segments. This processing method can ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/05G06T15/00
CPCG06T15/00G06T17/05Y02A90/10
Inventor 张宏杰李峰杨风利韩军科党会学党会博廖志军郭勇潘峰沈建国张飞
Owner CHINA ELECTRIC POWER RES INST
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