• Title/Summary/Keyword: Dimensionally Extended 9-Intersection Model

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An Implementation of Simple Feature Geometry Component of OpenGIS (OpenGIS의 Simple Feature Geometry컴포넌트 구현)

  • Hwang, Jung-Rae;Kang, Hae-Kyong;Kang, In-Soo;Li, Ki-Joune
    • 한국공간정보시스템학회:학술대회논문집
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    • 2000.06a
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    • pp.139-153
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    • 2000
  • 지리 정보 시스템을 위한 공간 데이터베이스 관리시스템간의 이질성을 최소화하고 공간 데이터의 호환성이나 상호 연동성을 높일 수 있도록 OGC에서 OpenGIS의 사양을 정의하였다. 본 연구에서는 OpenGIS에서 정의된 공간 데이터 모델을 지원하는 컴포넌트를 구현한 것이다. 즉, OpenGIS에서 요구되어진 사양에 따라 SFG (Simple Feature Geometry) 컴포넌트를 구현하였다. 본 논문에서는 컴포넌트 구현상의 발생되었던 문제점과 이 해결 방법을 제시한다. 또한 구현 도중에 발견된 OpenGIS SFG의 사양 자체의 문제점도 함께 제시한다.

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Design of Spatial Relationship for 3D Geometry Model (3차원 기하모델에 대한 공간 관계 연산 설계)

  • Yi Dong-Heon;Hong Sung-Eon;Park Soo-Hong
    • Spatial Information Research
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    • v.13 no.2 s.33
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    • pp.119-128
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    • 2005
  • Most spatial data handled in GIS is two-dimensional. These two-dimensional data is established by selecting 2D aspects form 3D, or by projecting 3D onto 2D space. During this conversion, without user's intention, data are abstracted and omitted. This unwanted data loss causes disadvantages such as restrictingof the range of data application and describing inaccurate real world. Recently, three dimensional data is getting wide interests and demands. One of the examplesis Database Management System which can store and manage three dimensional spatial data. However, this DBMS does not support spatial query which is the essence of the database management system. So, various studies are needed in this field. This research designs spatial relationship that is defined in space database standard using the three-dimension space model. The spatial data model, which is used in this research, is the one defined in OGC for GMS3, and designing tool is DE-9IM based on Point-Set Topology blow as the best method for topological operation.

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