• Journal of Korean Society for Geospatial Information Science
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• v.17 no.2
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• pp.133-143
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• 2009

Next Generation Digital Maps on demand Updating System is a system for setup of efficient on-demand updating system, keeping up-to-date data and conducting high-quality service and efficient management. The system is designed that object-based continuous Digital Maps may have on-demand updating available, as well as the exiting feature-based digital maps, and the relevant development is being done. This study presented some problems and improvement plans related to the system operation, by means of implementing object-based continuous Digital Maps and feature-based digital maps updating test, for the next generation digital maps on demand updating system, in order to contribute to present plans to apply next generation digital maps and to secure competitiveness. And, for the economical efficiency of the next generation digital maps on demand updating system, this study analyzed expenses and benefit resulted from introduction of on demand updating system for 1:5,000 digital maps, intended for National Geographic Information Institute. and the land category which have an effect on the officially assessed land price and it using GIS technology.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.25 no.3
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• pp.249-255
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• 2007

The building of spatial database such as digital maps has been extensively achieved as a base of geographic information system. However, in the GIS system built by the organizations including local autonomous entities, there are some problems technically and systematically for a promptly updating of GIS DB. This research is to develop the object-oriented database updating system to efficiently update the spatial data at any time for a small area. It could be managed the history of spatial database such as creation, modification and deletion at a object level using the UFID of spatial data. This system could help to modify or update the changed geographical features in an office or in-situ promptly. Finally, it could be made the efficient updating manner of geographic data and the assurance of newest database.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.26 no.5
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• pp.537-546
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• 2008

The digital map has been updated in every five years in the past. However, it has been changed to make corrections and updated in every two years for metropolitan region and every four years for other regions since year 2008. Although, the correctness and reliability were decreased and updating work is being delayed due to the updating work in a lump. The period update spends a lot of money because this method uses aerial photogrammetry, and the digital map has the time gap between periods. Therefore, this study provides information necessary for digital map produced by the government and develops digital map production system based on objects which can be updated frequently in order to save state and local government budgets that double investment are generated to update digital map. In order to analyze usefulness of the developed system, subject area was selected and errors of updated data were analyzed. As the result of analysis, checked 66 errors were corrected and saved in the database.

• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2008.06a
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• pp.19-25
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• 2008

현재 우리나라의 수치지도는 5년 주기로 갱신되고 있어 국토변화에 신속하게 대응하지 못하는 문제점을 가지고 있다. 본 연구에서는 이러한 수치지도를 건설공사 준공도면을 활용한 수시갱신이 이루어 질 수 있도록 건설공사 현황, 관련규정, 해외사례 검토, 준공도면을 이용한 수치지도의 시범제작을 통해 현재의 관련규정 및 제도상의 문제점을 도출하고, 개선방안을 제시하였다. 이를 종합한 결과 수치지도 수시갱신을 위해 준공도면을 활용하기 위해서는 첫째, 준공도면의 명확한 정의와 세부지침의 마련이 필요하다. 둘째, 준공측량의 제도적 근거 마련과 성과심사가 필요하다. 셋째, 준공도면 작성비용의 부담주체 설정해야 한다. 넷째, 정보공유협력체계가 마련되어야 한다. 준공도면을 활용하여 수치지도를 수정하는 방법은 매우 효율적인 것으로 판단되며, 준공도면 제출제도를 활성화시키기 위한 노력을 통해 신속하고 정확한 수치지도를 제공할 수 있는 기반을 마련할 수 있을 것이다.

• Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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• 2009.04a
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• pp.109-113
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• 2009

기술의 발전과 사용자환경의 변화는 지도에 대한 의식의 변화와 요구사항을 증가시켰다. 이러한 변화로 지도의 최신성 유지에 대한 중요성이 강조되었으며 수시갱신에 대한 방법들에 대한 다양한 연구가 진행되고 있다. 일반적으로 고해상도의 위성영상 및 항공영상을 활용하는 방법의 연구가 활발히 진행되고 있으며 건설도면을 활용하는 방안에 대해서도 연구가 진행중이다. 이러한 방법은 상대적으로 비용이 많이 소요되므로 이러한 단점을 극복하기 위한 대안을 제시하고자 하였다. 본 연구에서는 효율적인 지도의 갱신을 위해 나라장터의 입찰정보를 분석하고 공간정보 데이터와 연계가 가능하도록 시스템을 구축하였다. 입찰정보로부터 지형지물의 변화를 발생시키는 공사를 분류하고 데이터베이스화하여 변화예측 정보로 활용하였다.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.28 no.1
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• pp.161-168
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• 2010

This study aims to propose a method that shall rapidly acquire 3D information of the fast and frequently changing city areas by using the images taken by the UAV photogrammetric method, and to develop the process of the acquired data. For this study's proposed UAV photogrammetric method, low-cost UAV and non-metric digital camera were used. The elements of interior orientation were acquired through camera calibration. The artificial 3D model of the artificial structures was constructed using the image data photographed at the target area and the results of the ground control point survey. The digital surface model was created for areas that were changed due to a number of civil works. This study also analyzes the proposed method's application possibility by comparing a 1/1,000 scale digital map and the results of the ground control point survey. Through the above studies, the possibilities of constructing a 3D virtual city model renewal of 3D GIS database, abstraction of changed information in geographic features and on-demand updating of the digital map were suggested.

• Journal of Korean Society for Geospatial Information Science
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• v.15 no.3
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• pp.19-26
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• 2007

The renewal update of the digital map constructed through NGIS has been conducted for the enhancement of usage, maintenance so that the latest data is guaranteed. The total update has been done every five years for five regions of the country using aerial photographs and satellite images. By launching the third phase of NGIS, the updating plan was changed from total to total or partial update including the real time update scheme. Furthermore, the update period was improved from five to two years and four years for a large and a small city, respectively. Therefore, it is necessary to develope a matching technique which combines various geographic information (such as drawing map, surveying drawing and map) with exact position on the digital map. In this study, we developed a matching algorithm based on central point and suggested a method which uses general surveying drawing for revision/update of the digital map. The general survey is conducted when a civilian development on lands are approved. Thus, the outcome from the survey, which is the general survey drawing, contains the latest various contents such as road, building, water pipe and manhole. A consistent and efficient method using the general survey drawing for near real time update of the digital map by applying the developed matching algorithm is presented.

• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2008.10a
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• pp.262-263
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• 2008

수치지도는 다양한 GIS 어플리케이션의 기반데이터로 최신성이 무엇보다도 중요하다. 하지만 기존의 항공사진과 현지측량을 통한 갱신 방법은 짧은 주기로 변하는 현실 세계를 신속하게 반영하지 못한다는 단점을 가지고 있다. 특히 수치지도에서 많은 부분을 차지하고 있는 건물은 신축, 개축, 증축이 수시로 일어나기 때문에 기존의 갱신 방안으로는 한계점이 존재하였다. 이를 위해 본 연구에서는 건축행정시스템(e-AIS)의 건축 도면 및 대장 정보를 이용한 수치 지도 갱신 및 검수 방안을 제시하였으며, 이를 시스템화 하였다. 본 연구의 성과로 수치지도의 갱신 주기를 단축시킬 수 있으며, 또한 기 구축된 자료를 재활용한다는 측면에서 효과적인 갱신 대안이 될 수 있을 것으로 판단된다.

• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2008.06a
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• pp.427-433
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• 2008

수치지도는 제작 과정뿐만 아니라 갱신 및 검수 작업도 정확성과 최신성을 유지하기 위해 매우 중요하다. 하지만 항공사진과 현지측량을 통한 기존의 갱신 방법은 짧은 주기로 변하는 현실 세계를 충분히 반영하지 못한다는 한계를 갖고 있어 수치지도의 최신성을 유지하기 위한 효율적인 새로운 갱신 방안이 요구된다. 이를 위해 인터넷건축행정시스템(e-AIS)의 건축도면과 건축물대장정보를 이용하면 신축, 개축, 증축 등이 수시로 일어나는 건물에 대해 수치지도의 갱신을 위한 신속하고 효과적인 대안이 될 수 있다. 본 연구에서는 건축도면에서 추출된 공간 정보와 건축물대장에서 취득된 속성 정보를 이용하여 수치지도의 건물 레이어를 갱신하는 방법을 제시하였다.

• Journal of the Korean Association of Geographic Information Studies
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• v.8 no.3
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• pp.129-141
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• 2005

It is difficult to edit large-scale digital maps because of problems of cost and process and it is carried out by aerial photogrammetry in renewal periods. Five years of update period cannot provide exact data required in the fast-moving age. This study is to analyze applicability and impact for editing digital map of road system using the GPS-Van. Results are compared with accuracy of the data acquisition with GPS-Van positioning. INS data are affected by the barrier to receive GPS data. But high accuracy were achieved by thorough plans according to work order. By using GPS Van and fieldwork at the same time for editing and renewal of digital map, it is expected that this method can be used to reduce costs in the economic and temporal aspects, and provide rapid and accurate digital map of road system.