• Proceedings of the Korean Information Science Society Conference
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• 2000.04b
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• pp.3-5
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• 2000

최근 지리 정보 시스템(GIS)이 전 국가적으로 대중화되면서 서로 다른 분야에서 구축되어 서로 다른 환경에 분산되어 있는 이질적인 공간 데이터의 상호운용성에 대한 필요성이 증가하고 있다. 이러한 상호운용성을 위해 OGC에 의해 표준 사양인 OpenGIS이 개발되었고, 이 사양을 바탕으로 개방형 지리 정보 시스템을 개발하여 다양한 데이터 소스간의 상호운용성을 얻고자 하는 연구가 활발히 이루어지고 있다. 그러나, OpenGIS 사양을 따르는 상호운용성 지원 방법에서는 다양한 형태의 데이터 소스별로 데이터 제공자의 개발이 필요하다. 따라서 이러한 부담을 줄이고 효율적인 데이터 저장 및 관리를 위한 단일 처리 모델의 제시가 필요하다 이에 본 논문에서는 표준 데이터 언어인 XML과 기타 다른 관련기술을 OpenGIS 서버의 데이터 제공자 컴포넌트에 도입하여, OpenGIS 사양을 따르는 기존의 이질적인 데이터 소스와의 연등을 지원할 뿐 아니라 표준화된 저장 구조의 데이터 소스에 대한 하나의 효율적인 데이터 제공자를 갖는 OpenGIS 서버를 설계 및 구현한다. 본 시스템은 OpenGIS의 지리 데이터 구조와 처리에 대한 인터페이스의 표준화를 통해 상호운용성을 보장하고, OLE/COM 사양을 이용하여 각 컴포넌트들의 재사용성을 지원하며, 또한 문서 저장 및 전달을 위한 데이터 형식의 표준인 XML을 사용하여 문서구조의 검증 기능과 문서접근 방식의 단일화를 지원한다.

• Journal of Korea Spatial Information System Society
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• v.11 no.3
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• pp.70-72
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• 2009

We describes functions, design, and implementation of Awarematics/WMSServer in this paper. Awarematics/WMSServer is a open-source web map service server developed Kunsan National University and National Information Agency(NIA). Recently in GIS areas, It tends to increase System Construction which developed by using Open-source GIS, but we have not developed yet ourself-made Open-source GIS Engine in Korea. This paper describes function, design, and implementation of Awarematics/WMSServer serviced and developed by NIA and Kunsan Natioanl University.

• Spatial Information Research
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• v.23 no.6
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• pp.99-107
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• 2015

Recently, the open source software market is becoming bigger and bigger as its demand keeps increasing worldwide. A variety of policies have been driven in Korea in order to vitalize the open source software. However, the performance for vitalizing the open source GIS software has not been initiated yet. The purpose of this research is to generate the support plan to vitalize the domestic open source GIS software which is appropriate for real field by analyzing the actual demand and user requirements. For this purpose we reviewed all the researches related to the vitalization of the open source software and conducted a survey based on the awareness of the open source GIS software, the current vitalization status, the adoption intent and necessary strategies for vitalization. According to the survey, the intent of adopting the open source GIS software is relatively high in both enterprises(97%) and universities(89%). On the other hand it is very low in public organizations(69%). As a result, the survey implies that more intense public relations are needed to escalate the awareness of the open source GIS software in the public organizations. In addition, the survey shows that both education and technology support are definitely needed as a strategies for the vitalization of the open source GIS software. We expect that this research can be utilized as a basic material for the policy making of the vitalization of the open source GIS software in Korea in the future.

• 한국공간정보시스템학회:학술대회논문집
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• 2000.06a
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• pp.37-48
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• 2000

지리정보시스템(GIS)의 사용이 확대되고 있는 현재 상황에서 다양한 분야에서 구축되어 서로 다른 환경에 분산되어 있는 이질적인 지리 데이타의 공유에 대한 중요성은 더욱 증가하고 있는데, 이러한 상호운용성을 지원하기 위하여 개발된 것이 OGC의 OpenGIS이다. OGC는 다양한 분야에서 차세대 표준으로 주목받고 있는 XML을 GIS에 도입하려는 움직임으로 GML 사양을 제시하고 있다. 향후 사용이 더욱 증가하게 될 XML 문서 형태의 지리 데이타에 대한 GIS 사용자들의 접근을 허용하기 위해서 OpenGIS를 지원하는 XML 데이타 제공자의 설계 및 구현이 절실히 필요하다. 본 논문에서는 OGC의 세 가지 구현 사양 중 특히 Microsoft의 OLE/COM을 기반으로 하는 OpenGIS Simple Features Specification for OLE/COM 사양과 지리 데이타의 XML 인코딩을 위한 GML 사양을 기반으로 XML 데이타 제공자를 설계 및 구현하였다. 본 논문에서 개발한 XML 데이타 제공자는 표준화된 지리 데이타 구조와 처리에 대한 인터페이스를 지원하여 상호운용성을 보장하고, XML 기술을 활용하여 XML데이타의 효율적인 분석 기능도 제공한다. 따라서 XML 데이타 제공자를 사용함으로써 표준화된 DTD를 따르는 XML 문서내의 지리 데이터를 OpenGIS를 지원하는 이질의 데이타 소스의 지리 데이타와 함께 공유할 수 있고, XML 문서의 구조를 효율적으로 검증할 수 있으며, 또한 XML 데이타에 대한 접근 및 분석이 가능하게 된다.

• Spatial Information Research
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• v.22 no.6
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• pp.67-79
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• 2014

These days open source softwares are being introduced and applied in many countries in the world. Especially, both government and private companies tend to become an spearhead in vitalizing the open source software. In this paper we try to check the degree of vitalizations in open source GIS software and to draw implications in vitalizing ecosystem of open source GIS software. Key players of open source GIS software ecosystem are government, private companies, academic and research institutes, and nonprofit foundations. Government does not have very little policies related to the investment and the support of open source GIS software. Private companies related to the open source GIS software are very few in the number and do not have any clear business model to make a profit. Academic and research institutes are weak in using the open source GIS software, which can be an major obstacle to cultivate software developers. OSGeo Korean branch, established in 2009, is the only nonprofit foundation in Korea which makes an effort to vitalize the open source GIS software, but its results are not very strong up to now in view of both quality and invigoration. In order to vitalize the open source GIS software ecosystem, lots of efforts of key players are needed. Especially, government efforts are very important because it can provide a trigger in vitalizing the open source GIS software ecosystem. The tasks that government should propel are R&D investment, test bed projects in the area of public sector, professional manpower training, and international cooperation and marketing.

• Journal of Korean Society for Geospatial Information Science
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• v.17 no.4
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• pp.67-74
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• 2009

The 'Open Source' of programing is a method that is not only sharing the source, but also making the S/W by the low cost and easy way. In this study, we made the urban facilities management system(FMS) based on the GeoFOSS of Open Source. This system has the GIS function of the urban facilities management, the u-GIS function using the USN for processing the spatial information. Also, as we use the GeoFOSS of 'Open Source', we can have received many benefits. First, this system has the economic impact, because it is not necessary to buy the commercial GIS software. Second, this system can make most functions of the GIS, the performance does not bad compared to other products. Also, this system strictly conforms to the international standards, it is easy to get a repair, maintenance and interoperability.

• 한국공간정보시스템학회:학술대회논문집
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• 1999.06a
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• pp.131-145
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• 1999

최근 정보화 사회에서 정보의 처리와 공유에 대한 관심이 크게 증가하지만 기존 지리정보시스템(GIS)이 갖고 있던 상호 이질적인 지형공간데이타 포맷을 가지고는 효율적인 정보의 처리와 공유가 어려운 형편이다. 이러한 지형공간데이타 포맷의 문제로 인해 지형공간 데이터의 중복수집의 문제가 발생하였으며, 또한 많은 시간과 경비가 중복 투자퇴고 있다. 본 논문에서는 지형공간 데이타 중복수집의 문제점을 효과적으로 해결하고, 이미 구축되어 있는 지형공간 데이타를 필요로 하는 사람들과 공유하고 유통하기 위하여 KGDC(Korean Geospatial Data Clearinghouse)를 설계 및 구현하였다. KGDC를 통하여 ESRI와 Intergraph사의 상용 지리정보시스템들의 데이타를 별도의 처리과정 없이 공유할 수 있으며, 또한 OGC(OpenGIS Consortium)의 OpenGIS 구현명세에 기술되어 있는 표준 OpenGIS 인터페이스를 지원하는 지형공간 데이타 서버의 데이타도 효과적으로 공유할 수 있다. 특히, KGDC는 다양한 검색 기능과 다양한 정보를 제공하여 손쉬운 지형공간 데이타의 공유 및 유통을 가능하게 하며, 검색을 위한 정보와 검색의 결과로 이용하기 위해 ISO/TC211 표준 메타데이타를 부분적으로 지원하고 있다.

• Journal of KIISE:Computing Practices and Letters
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• v.8 no.5
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• pp.510-519
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• 2002

The OpenGIS Consortium has proposed a new web-mapping technology to support interoperability in web GIS environment by developing the specifications of MapServer and GML. In this environment, the MapServer transforms legacy spatial data into GML data, and clients display them on standard web browsers. This web-mapping testbed proposes methods for discovering, accessing, integrating and displaying GIS information except processing of spatial operations which are essential services in GIS environment. This paper proposes the method for executing spatial operations on GML data which are overlays of different map layers in legacy data servers. To support spatial operations on GML data in web GIS environment, this paper designs and implements GDOM based on the W3C's DOM Specifications and OGC's Simple Features Specifications. This paper shows the specifications and implementation of GDOM and the process of spatial operations in web-mapping testbed environment.

• Journal of Korea Spatial Information System Society
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• v.3 no.1 s.5
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• pp.49-62
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• 2001

Recently, component-based software has become main trends in designing and developing computer software products. This component-based software has advantage of the interoperability on distributed computing environment and the reusability of pre-developed components. Also, GIS is designed and implemented with this component-based methodology, called Open GIS Component. OGC(OpenGIS Consortium) have announced various implementation and design specification and topic in GIS. In GIS, Spatial analysis functions like network analysis, TIN analysis are very important function and basically, estimate system functionality and performance using this analysis methods. The simple feature geometry specification is announced by OGC to increase the full interoperability of various spatial data. This specification includes just geometry spatial data model. However, in GIS which manages spatial data, not only geometric data but also topological data and various analysis functions have been used. The performance of GIS depends on how this geometric and topological data is managed well and how various spatial analyses are executed efficiently. So it requires integrated spatial data model between geometry and topology and extended data model of topology for spatial analysis, in case network analysis and TIN analysis in open GIS component. In this paper, we design analysis component like network analysis component and TIN analysis component. To manage topological information for spatial analysis in open GIS component, we design extended data model of simple feature geometry for spatial analysis. In addition to, we design the overall system architecture of open GIS component contained this topology model for spatial analysis.

• Spatial Information Research
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• v.7 no.2
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• pp.175-190
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• 1999

Recently , as GIS technology is rapidly improved and stabilized, there are some needs to reuse pre-developed and powerful GIS technology. GIS standardization based on components and open interfaces becomes a way to solve those reusability of previous GIS technology. This GIS standardization currently focuses on building the GIS Data Infrastructure that is being deployed globally. Especially, OpenGIS consortium which is mainly made up of international GIS leading vendors is announcing some GIS abstract specifications and implementation specifications. This study focuses on how could we design and implement the OLE/COM-based data provider component based on various DBMS or file systems, how could these data provider components be used for enterprise UIS(Urban Information Systems) and how could various formatted GIS data be shared in one system. Also some problems practically caused by an implementation process of data provider component are listed up and some solutions are given. Furthermore, design and analysis of UML(Unified Modeling Language) was reformed through the data provider component development task and this UML methodology is able to indicate a standardized model for newly developed data provider component.