• Proceedings of the KSRS Conference
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• 2008.10a
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• pp.365-367
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• 2008

A digital city model represents a 3D environment of a city with various city object information such as 3D building model, road, and land cover. Usually, at least two satellite images with some image overlap are necessary and a complex satellite-related computation needs to be carried out to create a city model. This is an expensive technique, because it requires many resources and excessive computational cost. The authors propose a methodology to create a digital city model including 3D building model and land cover information from a single high resolution satellite image. The approach consists of image pan-sharpening, shadow recovery, building occlusion restoration, building model extraction, and land cover classification. We create a digital city model using a single KOMPSAT-2 image and review the result.

• Information and Communications Magazine
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• v.31 no.8
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• pp.16-23
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• 2014

U-City 공간계획 및 설계기술개발연구는 그 동안 서비스와 정보통신기술(ICTs)을 중심으로 다루어졌던 U-City추진의 한계를 극복하고 도시공간에 기반한 U-City 구축과 실증을 통해 저비용 고효율의 미래 도시공간을 구현하고, 기존 도시의 문제 해결과 도시의 효율적 운영관리의 필요성 등에 따라 공간적 측면에서의 U-City 구축을 통해 국내 대표의 건설브랜드인 U-City선도화와 종주국으로서의 위상을 강화하기 위한 U-City 창조공간 계획 및 설계 기법을 연구하고자 한다. 본 연구를 위해서는 국내외 관련 문헌조사, 사례조사를 중심으로 연구를 진행하고 있으며, 도시 공간단위별로Prototype을 구축하고 실제 사례도시(Test Bed)를 선정하여 연구결과를 적용해 보고 효과를 검증하는 방법으로 연구 내용의 내실화를 기하고 있다. 본 연구개발사업을 통해서 도출된 결과물을 통해서는 도시민이 체감할 수 있는 U-City 구현을 통해 시민이 체감할 수 있는 U-City 보급과 확산으로 국내 고유의 대표건설브랜드로서 U-City의 대내외적 경쟁력을 확보하고, 침체된 건설경기 활성화 등에 기여할 수 있을 것이라 판단된다.

• Spatial Information Research
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• v.20 no.1
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• pp.19-26
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• 2012

Since $CO_2$ emissions are recognized as the biggest contribution to climate change, the needs and international efforts for $CO_2$ emissions reduction are increasing. The developed countries are driving strategies to boost green industry as a new growth engine. Following this global trend, based on the ongoing U-City project as a new city model, it is required to analyze the changes of $CO_2$ emissions in U-City to identify its potential for reducing carbon dioxide emissions. This study aims at identifying the potential and effects on $CO_2$ reduction by analyzing the level of $CO_2$ emissions before and after introducing U-City. Bundang-Gu, Seongnam-City & Ilsan-Gu, Goyang-City among Phase I new tow ns were selected as model cities before introducing U-City and Dongtan-Dong, Hwaseong-City as a model city after introducing U-City. The result showed 30% reduction of $CO_2$ emissions in the comparison of tw o models.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2021.10a
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• pp.161-163
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• 2021

This urban centralization is expected to develop rapidly, with 75% of the population living in the city by 2035. Large cities are becoming unsustainable due to side effects such as environmental pollution, severe traffic jams, excessive energy depletion, and destruction of the natural ecosystem. In addition, the happiness index of citizens of large cities is also falling because of high crime rates and safety accidents, the work-life imbalance caused by inequality and polarization, and overly competitive education. To solve this problem, Smart City, an IT-based future city model, was born. The Korean government is also actively attempting to improve urban competitiveness and promote sustainable development through efficient construction and operation of smart cities as a national focus project. To support the effort, we review the basic directions and strategies of Sejong City's Smart City service infrastructure based on the comprehensive national land plan, Smart City plan, and Smart City strategy plan.

• Spatial Information Research
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• v.18 no.1
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• pp.1-10
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• 2010

Even after many constructions of test-beds to verify R&D results, there is no standard to set up a consistent and systematic test-bed master plan. Therefore, this research derives standards of a u-city test-bed master plan. To verify these standards, the research constructs the potential U-City master plan targeting Cheongna district in Incheon. Standards of a test-bed master plan which is suggested by this research will bring strengths to construct a test-bed such as clear construction procedures from presenting directions of planning, saving cost, effective management of equipments, and so on.

• Proceedings of the Korea Information Processing Society Conference
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• 2009.11a
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• pp.237-238
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• 2009

u-City 통합 운영 센터의 목적은 다양한 u-City 서비스들의 정보를 수집, 분석, 통합하여 제공함으로써 삶의 질을 높이고 도시를 효율적으로 관리하는 것이다. 이를 위해서 u-City 통합 플랫폼 구축과 기술 표준화를 위한 연구들이 활발히 진행되고 있으며, u-City 통합 플랫폼은 한 서비스에 종속적이지 않은 독립적인 서비스 플랫폼으로서 기존의 u-City서비스를 제공할 수 있으며 자유롭게 확장 될 수 있어야 한다. 따라서 효율적인 통합 플랫폼 구축을 위해서는 기존의 센서 네트워크 시스템 분석이 필요하며 본 논문에서는 이기종의 센서 네트워크 시스템들의 비교 및 분석을 용이하게 하는 지원도구를 설계 및 구현한다.

• Proceedings of the KSRS Conference
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• 2003.11a
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• pp.1371-1373
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• 2003

The importance of Fundamental Geographical Information Framework for Digital City (FGFDC) is analysed, it provides all city agencies and units with uniform geographic references. Six kind of data are chosen as the core data sets of a FGDC, a web-based distributed mechanism is constructed to promote data sharing among different agencies. Elementary functional requirements of FGDC are analyzed, so that it can serve as a common distributed urban GIS. A practical FGFDC is developed for Yangzhou Development Administrative Region, and an 3D visualization system is developed within this framework.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.30 no.4
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• pp.705-717
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• 2020

Cities in the world are rushing to develop smart cities to create a sustainable and happy city by solving many problems in cities using information and communication technologies such as big data and IoT. However, in Korea's smart cities and smart city certification systems, the focus is on platform-oriented hardware infrastructure, and the information security aspect is first considered to build and authenticate. It is a situation in which a response system for the risk of leakage of big data containing personal information is needed through policy research on the aspect of personal information protection for smart city operation. This paper analyzes the types of personal information in smart cities, problems associated with the construction and operation of smart cities, and the limitations of the current smart city law and personal information protection management system. As a solution, I would like to present a model of a personal information protection management system in the smart city field and propose a plan to strengthen personal information protection through this. Since the management system model of this paper is applied and operated in the national smart city pilot cities, demonstration cities, and CCTV integrated control centers, it is expected that citizens' personal information can be safely managed.

• Proceedings of the Korean Society of Computer Information Conference
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• 2011.06a
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• pp.159-163
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• 2011

U-City의 안전을 위하여 안전한 전기공급과 전기안전 점검과 전송에 필요한 전기IT 인프라는 중대한 요소이다. U-City의 건설에 필요한 전기IT기기의 설계와 개발 및 제조를 하고 Test-bed에 설치하여 성능 평가를 한 후에 검증을 맡은 전기IT기기를 U-City 설치하여야 한다. 본 논문에서는 U-City 안전을 위한 전기IT기기에 대한 절연저항, 누설전류에 따르는 고온, 연기, Co2, 불꽃, 화재 등을 감지하는 센서를 부착하고, 발생할 수 있는 재난을 사전에 예방하기 위해 전기안전보호기술, 전기설비를 상시 감시할 수 있는 기반기술, 설비를 원격으로 관리할 수 있는 제품에 대한 성능평가와 시뮬레이션을 통해 U-City에 구축되려는 종합적인 전력통합감시시스템을 연구한다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.8
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• pp.5207-5212
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• 2014

City image improvement is very important, particularly in city tourism development because tourism depends on image. Some cities have made efforts to develop a positive city image with local festivals. The purpose of this study was to assess the tourists' satisfaction of local festivals. First, the city image was focused on three factors; city satisfaction, experience and convenience. Second, the city image was influenced significantly by city satisfaction and direct or indirect experience. These results show that effective strategies are needed for the successful IT implementation in local festivals. The use of mobile applications and GIS-based sensors provide local festival information for tourists who receive information, Finally, a well made city image combines city identity and originality, which will attract many tourists and visitors.