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LOD generation method and system thereof

An information generation and building technology, applied in neural learning methods, 3D modeling, biological neural network models, etc., can solve problems such as large overall data volume, long-distance viewing freezes, and affecting users' LOD browsing experience.

Pending Publication Date: 2021-04-23
武汉大势智慧科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, when displaying a city-level model with tens of thousands of buildings, due to the large amount of overall data and limited computing resources of all low-level tiles, it will obviously cause lag when viewing from a long distance, which will affect the user's understanding of LOD. browsing experience

Method used

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  • LOD generation method and system thereof
  • LOD generation method and system thereof
  • LOD generation method and system thereof

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Embodiment Construction

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] In the existing technology, due to the limitation of calculation accuracy and shooting quality of the inclined model automatically generated by using the photos taken by drones, the outer wall and wall edges of the original building model have undulations, and if it is simplified many times, this undulation will be further expanded, resulting in figure 2 The bu...

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Abstract

The invention provides an LOD generation method and a system thereof, and the method comprises the steps: extracting the horizontal contour of a building, and generating a wireframe structure of the building according to the horizontal contour and the elevation information of the building; and mixing the wireframe structure with a digital elevation model (DEM) of the urban terrain to generate an LOD with the wireframe structure. According to the embodiment of the invention, the wireframe structure generated by combining the horizontal contour extracted by using the deep learning technology with the elevation information represents the overall characteristics of the building, and the wireframe structure is regular in appearance of the building and simple in geometric structure. Therefore, the LOD generation method based on wireframe structure extraction and mixing can ensure smooth browsing and refreshing and uniform scene buildings when the city inclined simplified layer model is observed remotely, and better visual experience is provided for people.

Description

technical field [0001] The present invention relates to the field of display technology, and more specifically, to a method and system for generating an LOD. Background technique [0002] LOD technology determines the resource allocation of object rendering according to the position and importance of the object model in the display environment relative to the observer, and reduces the number of faces and details of distant and non-important objects, so as to obtain high-efficiency rendering effects. Three-dimensional display of big data is an indispensable technology. When the model is large, computer resources are limited and data plotting cannot be performed in real time. In order to solve the above problems, LOD technology usually implements the following display strategy for the model: I. Display the model of the same object with different complexity according to the change of the distance between the observer and the model. When the model is far away from the observer,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00G06T17/05G06T7/13G06N3/04G06N3/08
CPCG06T17/005G06T17/05G06T7/13G06N3/08G06T2207/20081G06T2207/20084G06T2207/30184G06N3/045
Inventor 余显怀高云龙
Owner 武汉大势智慧科技有限公司
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