• Journal of Digital Contents Society
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• v.13 no.1
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• pp.31-36
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• 2012

Since the national standard topographic map is made by DXF format which is the results of the National Geographic Information System project and lots of CAD data and scanners can be used to acquire the data easily, the imports of existing DXF file will decrease the costs and time for data acquisition process. In addition, the spatial data such as topographic map should be able to convert to the middle file format such as PostScript in order to be exported into other systems. For this purpose, I design and implement three units of modules, which are File Manipulation Module, MVF Import Module, and MVF Export Module. Finally, I verify the actual transformation of topographic map that are DXF file format by conducting the series of tests.

• Journal of Korean Society for Geospatial Information Science
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• v.13 no.3 s.33
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• pp.79-85
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• 2005

Early, national basic topographical map has been represented, stored, supplied in form of DXF(Data eXchange Format) and present digital map is equipped as over form. Since many parts of digital map has been equipped newly to use early digital map form for geographic information system. Especially, many structural editing and geographical search are demanded to exclude geometric inconsistency and logical inconsistency included in the existing digital map. As above, DXF is unsuitable data format to use in geographic information system. For the sake of efficient format, Digital Map Ver. 2.0 that is new map format was developed. In this study, we developed the Mobile Viewer program development which can let us see immediately the digital maps produced in the form of Digital Map Ver. 2.0.

• The KIPS Transactions:PartC
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• v.13C no.3 s.106
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• pp.383-388
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• 2006

Most of GIS services have been operated in single applications, and as data processing and computer and mobile technologies have developed rapidly, users request for efficient sharing between each GIS's own data and various different GIS's. However, since many GIS applications maintain their own data formats, they are incapable of processing data formats different with each other, and do not have a filtering function for mobile GIS. This paper designs an integrated preprocessor, SMP to accept features of various current formats of geographic information such as DXF(Drawing eXchange Format), DWG(DraWinG), SHP(SHaPefile), etc., and to extract core information for describing maps. The geographic information extracted by SMP(Synthetic Map Preprocessor) shows consistency in various formats by visualizing through the integrated view. By generating the extracted core data in GML, it supports rapid access to mobile devices and extensibility of file formats overcoming heterogeneity.

• Journal of Korea Spatial Information System Society
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• v.4 no.1 s.7
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• pp.15-25
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• 2002

The OGC(OpenGIS Consortium), which is standardization organization of geographic data, have been studied standard for geographic data such as GML and GML based annotation for image and map. Annotation for map is applicable in various ways, understanding about geographic data, decision making and exchange of communication. For instance, Map annotation can be used for highlighting tour-course as symbols or explaining it as text on a map in tourism. This study suggests some annotation methodology for national digital map and presents a simple implementation of it. Firstly, this study suggests a way of updating OGC annotation schema which corresponds with DXF format and creating a GML application schema using the updated OGC annotation schema. Also it suggest a way of converting instance documents of annotated map to VML document with XSLT and VML for display. Later, it is needed to study for supporting another formats as well as DXF format. In addition, it is needed to study for managing the history of updated map entity with annotation in Local governments UIS(Urban Information System) in practical aspects.

• Proceedings of the Korea Information Processing Society Conference
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• 2005.05a
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• pp.707-710
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• 2005

과거 지리정보시스템 서비스들은 단일 어플리케이션에서 동작되어 왔다. 데이터 처리 기술의 급속한 발전과 컴퓨터 및 Mobile 사양이 높아지면서 사용자들은 각각의 지리정보시스템 자체 데이터는 물론, 이질적인 다른 여러 지리정보시스템의 통합 가시화와 효율적인 공유를 요구하고 있다. 그러나, 많은 지리정보시스템 어플리케이션들은 자체 데이터 포맷과 상이한 데이터 포맷에 대해서 처리하지 못하는 단점을 가지고 있다. 본 논문에서는 지리정보시스템의 대표적인 형식이고 국립지리원에서 제공하고 있는 DXF(Drawing eXchange Format)파일 포맷과 현재 사용되고 있는 지리 정보인 DWG(DraWinG), SHP(SHaPefile)등의 포맷을 통합된 하나의 뷰어를 통해 가시화하기 위한 IMP(Integrated Map Preprocessor)를 설계한다. 또한 Mobile 지리정보시스템 환경에서의 데이터 활용을 효과적으로 하기 위해 추출된 정보를 공통된 기준의 의미부여로 인덱싱화하여 DB에 저장한다.

• Journal of Korea Multimedia Society
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• v.8 no.8
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• pp.1023-1031
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• 2005

LBS(Location Based Service) and GIS (Geographic Information System) are supporting necessary services for system which provides geographic information using location information based on various platforms. However the mobile computing environments such as PDA system have serious limitations in functional viewpoints compare of general computing environments, it has problems for developing GIS system which is providing various information. In this paper, we suggest the reduced methods of digital map and format of web-linked digital mao in order to fit in mobile environment. As a result of map generation, the total capacity of the supported digital map was diminished about $99.34\%$ than the original map.

• Journal of KIISE:Computer Systems and Theory
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• v.34 no.1
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• pp.19-27
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• 2007

Entering the 21st century, the demand on information service via mobile devices is skyrocketing along with the popularization of computers and mobile communication devices and the rapid development of wireless communication technology. In particular, as mobile device service such as LBS and Telematics becomes highlighted, the management of mobile devices is ever more drawing attention. However, since there is no fixed standard on geographical space data, many commercialized monitoring systems do not use common geographical space data but independent geographic information. Furthermore, as it is impossible to save location information of each mobile device by integrating such information after acquiring them, it is difficult to trace management. Therefore, in this paper, geographic data with DXF. DWG and SHP format, which are commonly used files, were created and visualized by GML format, OGC standard advice. And then, TMS(Trace Monitoring System of Mobile Device) that can trace and manage information after acquiring and saving space information that show the movement of users was implemented.

• Proceedings of the Korea Information Processing Society Conference
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• 2005.05a
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• pp.1469-1472
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• 2005

웹상에서 제공되던 지리정보서비스가 최근 모바일 GIS 기술의 발달로 인해 이동 단말기에서 서비스가 가능해졌다. 하지만 이동 단말의 가장 큰 목적 중 하나인 휴대성에 초점이 맞추어지다보니 데이터처리의 용량 부족과 통신 속도의 문제에 부딪히게 된다. 또한 현재 모바일 GIS에 지리정보 표현에 따른 표준이 없기 때문에 특정 포맷에 의존도가 높아서 유연성이 떨어진다. 본 연구에서는 국립지리원에서 제공하고 있는 DXF파일 포맷을 추출 및 인덱스화를 통해 경량화를 시키고, OGC(Open GIS Consortium)가 제안한 XML(eXtensible Markup Language) 기반의 표준 공간 데이터 포맷인 GML(Geographic Markup Language)로 변환기능을 수행하는 GML 생성기를 설계, 구현함으로써 추후 확장 및 호환이 용이하도록 설계하였고 이를 WIPI 에뮬레이터에 가시화한다.

• Journal of the Korea Society of Computer and Information
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• v.12 no.4
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• pp.229-237
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• 2007

To solve of complex problems for access and management data stored in the very large spatial database system that need to constructed metadata for the physical and logical elements concerned with spatial and non-spatial data sets. Also, in the underground water management system which managed with spatial and non-spatial elements, need to spatial features metadata system based on feature-based. We, in this paper, proposed metadata model for the feature-based underground water management system using underground water meta-information inputted on the DXF formatted tile-based geological maps. Additional, we modeled metadata level of feature and data set and presented standard specification of underground water metadata.

• Proceedings of the Korea Information Processing Society Conference
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• 2004.11a
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• pp.789-792
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• 2004

위치기반 서비스의 기초적인 부분이며 필수적인 부분이 바로 사용자가 자신의 위치에 대한 인지를 명확하게 할 수 있도록 위치를 표시하고 보여주기 위한 지도 데이터 서비스이다. 지도 데이터 서비스를 위해서는 지리정보를 특정 어플리케이션에 의존함이 없이 즉시 볼 수 있는 형태의 포맷으로 변환하는 것이 필요하다. 이를 충족시킬 수 있는 포맷으로 웹브라우저 상에서 바로 볼 수 있는 SVG를 고려할 수 있다. 본 논문에서는 GIS Vector Map의 대표적인 파일 형식인 DXF, SHP, MIF를 분석하였다. 또한, 이들 파일 형식을 공통된 하나의 파일형식인 XML로 변환하여 DB를 구축하고, 구축된 XML 데이터를 SVG로 변환하는 엔진을 구현하였으며 이를 통하여 $98\%$이상의 변환 효율을 갖는 결과를 얻을 수 있었다.