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Method and system for sorting planar sheet bundles based on shared straight line segments

A technology of plane sheet bundles and sorting methods, which is applied in image data processing, 3D modeling, instrumentation, etc., and can solve problems such as no 3-dimensional element construction algorithm

Inactive Publication Date: 2018-03-06
深圳市数字城市工程研究中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Embodiments of the present invention provide a method and system for sorting planar slices based on shared straight line segments, aiming to solve the problem that the existing methods do not have an effective 3-dimensional primitive construction algorithm

Method used

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  • Method and system for sorting planar sheet bundles based on shared straight line segments
  • Method and system for sorting planar sheet bundles based on shared straight line segments
  • Method and system for sorting planar sheet bundles based on shared straight line segments

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Embodiment 1

[0043] Since a series of related research and literature on "Cadastral-Oriented 3D Spatial Data Model" has only expounded the basic idea and principle of this key step (that is, plane beam sorting based on shared straight line segments), the formalization of this key step has not been given yet. , especially the formal description and analysis of the numerical calculation process of the above steps. The formal expression of the above steps (especially the formal expression of the numerical calculation process, typically given the formal expression of the calculation formula) is helpful for:

[0044] (1) First, hopefully this becomes fundamental knowledge in the field of geographic information science (especially the small field of 3D spatial data organization) (like "how to determine a plane from three points" or "how to determine a plane from four points The formal calculation formula of "circle" is the basic knowledge in the field of mathematics), and these basic knowledge a...

Embodiment 2

[0174] Figure 8It shows a structural diagram of a planar slice sorting system based on shared straight line segments provided by the second embodiment of the present invention, the planar slice sorting system based on shared straight line segments can be used in a mobile terminal, and the mobile terminal can include a The radio access network RAN ​​communicates with one or more core networks. The user equipment can be a mobile phone (or called a "cellular" phone), a computer with a mobile device, etc. For example, the user equipment can also be a portable , pocket, handheld, computer-built-in, or vehicle-mounted mobile devices that exchange voice and / or data with a wireless access network. For another example, the mobile device may include a smart phone, a tablet computer, a personal digital assistant PDA, a sales terminal POS, or a vehicle-mounted computer. For ease of description, only parts related to the embodiments of the present invention are shown.

[0175] The plane...

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Abstract

The invention is applicable to the field of software, and provides a planar chip bundle sorting method and system based on a shared straight line segment. The method comprises the following steps: determining a two-dimensional plane contained in a three-dimensional entity; determining a characterization vector of the two-dimensional plane; projecting the corresponding two-dimensional plane to an OXY plane according to the characterization vector of the two-dimensional plane; converting a preset starting plane into an X axis positive direction, and converting a normal vector of the starting plane into that the X axis positive direction is upward, wherein the preset starting plane is any two-dimensional plane in the two-dimensional planes contained in the three-dimensional entity, and the characterization vector of the preset starting plane is a starting characterization vector; calculating included angles between the starting characterization vector and other determined characterization vectors on the OXY plane, and determining the distances between the corresponding two-dimensional planes and the preset starting plane according to the sizes of the included angles. By adoption of the method, two-dimensional plane bundle sorting based on a shared one-dimensional straight line segment is realized, and thus a foundation is further laid for the construction of the three-dimensional entity

Description

technical field [0001] The embodiments of the present invention belong to the field of software, and in particular relate to a method and system for sorting plane slices based on shared straight line segments. Background technique [0002] In two-dimensional space, there have been many studies on constructing 2-dimensional primitives (polygons) from 1-dimensional primitives. It first appeared in the dual independent map encoding (DIME, Dual Independent Map Encoding) format (Peucker, T.K.etal. (1975). Cartographic Data Structure [J]. The Ameircan Cartographer, 2 (1): 55-69; Meixler, D .et al.(1987).Polygonization and Topological Editing at the Bureau of the Census[C].AUTO-CARTO 8Proceedings:731-738.) and Topologically Integrated Geographic Encoding and Referencing (TIGER,Topologically Integrated Geographic Encoding and Referencing) format ( Peuquest,D.J.(1984).A Conceptual Framework and Comparison of Spatial DataModels[J].Cartographica:The International Journal of Geographic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T17/10G06T17/05G06T3/60
CPCG06T3/604G06T17/05G06T17/10G06T2210/04
Inventor 虞昌彬郭仁忠赵志刚贺彪李霖应申
Owner 深圳市数字城市工程研究中心
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