• 한국공간구조학회지
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• 제7권4호
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• pp.14-20
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• 2007

• 대한공간정보학회지
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• 제14권3호
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• pp.13-22
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• 2006

3차원 지형공간정보의 활용범위가 확대되면서 다양한 형태와 크기의 건물들이 존재하는 광범위한 도시지역에 대하여 신속하고 정확하게 실세계에 가까운 3차원 건물 모형을 구축하는 기술 개발이 요구되고 있다. 기존의 항공사진이나 고해상 위성영상을 이용한 3차원 도시 지형공간의 구축 연구와는 달리 최근에는 높은 정밀도를 가진 항공 LIDAR 관측 자료를 활용한 3차원 건물 복원에 관한 연구가 활발히 진행되고 있다. 본 연구에서는 Zero-crossing의 특성을 갖는 LoG 연산자를 이용하여 높이별로 건물의 경계선 정보를 추출하고 Douglas-Peucker 알고리즘을 이용하여 경계선을 직선화하여 건물의 경계선을 정제하고 3차원으로 건물을 복원하는 기법을 제안하였다.

• 한국측량학회지
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• 제37권2호
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• pp.45-53
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• 2019

RGB-D SLAM (Simultaneous Localization and Mapping) refers to the technology of using deep camera as a visual sensor for SLAM. In view of the disadvantages of high cost and indefinite scale in the construction of maps for laser sensors and traditional single and binocular cameras, a method for creating three-dimensional map of indoor environment with deep environment data combined with RGB-D SLAM scheme is studied. The method uses a mobile robot system equipped with a consumer-grade RGB-D sensor (Kinect) to acquire depth data, and then creates indoor three-dimensional point cloud maps in real time through key technologies such as positioning point generation, closed-loop detection, and map construction. The actual field experiment results show that the average error of the point cloud map created by the algorithm is 0.0045m, which ensures the stability of the construction using deep data and can accurately create real-time three-dimensional maps of indoor unknown environment.

• 한국정보통신학회논문지
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• 제25권11호
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• pp.1670-1675
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• 2021

건설산업 영역의 스마트 건설 기술 도입이 빠르게 진행되고 있다. BIM(Building Information Modeling), 드론, 인공지능, 빅데이터, 사물인터넷 기술 등 스마트 건설 기술을 활용하여 시공 현장의 재해율을 낮추고 시공 기간을 단축시키는 효과를 가져온다. 건설 시공 현장 관리를 위한 디지털 트윈 플랫폼을 도입하기 위해서는 실제 시공 현장을 가상의 공간과 동일하게 구축하여 실시간으로 현장 관리를 가능하게 한다. 디지털 트윈 가상공간 구축방법은 시공 전주기 데이터를 수집 및 가공을 하고 3D 모델 파일을 이용하여 시각화 한다. 본 논문에서는 디지털 트윈 공간을 구성하는 3D 모델링을 3차원 공간 데이터를 기반으로 자동생성하여 효율적인 디지털 트윈 공간을 구축하는 모델링 자동화 기법을 소개한다.

• 한국공간구조학회논문집
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• 제19권4호
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• pp.85-94
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• 2019

Then 3D printing is used practically at construction sites, there is a serious lack of studies on the conflict with construction-related laws and expected operational problems. Accordingly, the purpose of this study is to present obstacles and directions for improvement in construction-related laws (Building Act, Construction Technology Promotion Act, Housing Act, Construction Machinery Management Act, etc.) for practical operation of 3D printing. The important results are as follows. Amending existing construction-related laws for 3D printing is irrational and inefficient in terms of structure and material. This study proposed a method of satisfying performance required by laws or standards based on the performance design method presented in existing laws and systems through structure and material performance certification procedure. In addition, inclusion of 3D printing equipment in the Construction Machinery Management Act results in various restrictions such as equipment inspection and certification of machine parts. As such restrictions can block vitalization of 3D printing, a long-term and step-wise approach was suggested.

• 한국측량학회지
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• 제27권3호
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• pp.331-345
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• 2009

본 연구의 목적은 공간데이터 구축공정에 표준으로 적용 가능한 관리방법론을 연구하는데 있다. 우리나라는 아직까지 구축공정 및 품질관리에 대한 체계적인 기준인 정립되지 않은 실정이어서 국가예산이 낭비될 우려의 소지가 있다. 또한 현재 공간데이터 구축과 관련된 법규는 기준이 명확하지 않은 경우가 있어서 공간데이터의 품질에 대한 신뢰성이 부족한 실정이다. 공간데이터의 제작 및 품질검사와 관련이 있는 법규, 국토지리정보원에서 수행한 공간데이터의 품질관련 연구 등 각종 문헌자료, 지방자치단체의 지리정보시스템을 구축한 경험이 있는 주요 업체의 공간데이터 제작공정 및 작업방법에 대하여 조사, 분석하였다. 분석한 내용을 기반으로 GPS에 의한 기준점 측량, 수준측량, 항공사진촬영, 수치지도 제작, 지형도 제작, 수치표고자료 제작, 항공사진 DB 구축, 정사영상지도 제작 등 8개 사업을 대상으로 선정하고 표준화된 관리방법론을 제시하였다.

• 한국공간구조학회논문집
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• 제21권3호
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• pp.77-84
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• 2021

In this study, In order to apply the U-flanged truss hybrid beam to the actual construction site, the structural design of the basic module of the middle and low-rise neighborhood living facilities was performed according to the Korea Design Standard, and the construction cost and construction period were compared with the traditional reinforced concrete structure system. As a result of analyzing the construction cost for the basic module, if the U-flanged truss hybrid beam and D-Deck slab system are used, the construction cost can be reduced by 86% compared to the traditional reinforced concrete structure system. In addition, as a result of analyzing the construction period for a floor area of 1,000m², using the U-flanged truss hybrid beam and D-Deck slab system can save 2.0days in construction period compared to the traditional reinforced concrete structure system. Therefore, the U-flange truss hybrid beam can secure sufficient economic feasibility compared to the existing reinforced concrete method in terms of cost reduction and shortening of construction period.

• 건축역사연구
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• 제28권2호
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• pp.31-40
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• 2019

Considering the situation in the early 20th century when the existing urban system centered on urban areas began to change, the biggest factors causing urban structural changes in urban areas are construction of railroad and urban dismantling. The change process of Eupseong, in the microscopic viewpoint, can be understood as a process of change in the course of dismantlement of town's demarcation, improvement of accessibility and urban expansion due to the construction of railroads, process of urban expansion following the crumbling boundaries and structural changes. This study aimed to look at the transformation process of the Eupseong in the early 20th century, focusing on the demolition of the castle and the railway construction from a microscopic point of view of city.

• 한국공간구조학회논문집
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• 제23권2호
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• pp.45-52
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• 2023

Modular construction is an economical and efficient construction that reduces time and costs by manufacturing units in factories and constructing them on site. Currently, the demand for modular construction is increasing not only abroad but also domestically. As the demand for modular construction increases, a lot of development and research on connections between modular units are being conducted. Connections between modular units should be quick and simple to assemble when assembling units on site, and should be in a form that allows each unit to be connected regardless of direction. In addition, it must be able to exert sufficient strength against external loads. In this study, a connection between modular units using connecting steel plates and bolts was proposed, and the nonlinear behavior of the connection to external lateral force was analyzed through finite element analysis, and resistance performance was evaluated.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2005년도 Proceedings of ISRS 2005
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• pp.466-469
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• 2005

In this study e-map component was designed and developed to possibly overlay with all kinds of thematic maps in various scales and provide the all detailed information by using high-resolution satellite image and GIS. Also, this system has powerful map composition tool to display map such as legend, scale bar, index map and so on. For this, this e-map component was designed by using UML and developed based on Windows 2000 and implemented by using Visual Basic 6.0 as development programming language, Map Objects 2.1 of ESRI as GIS component. Through this system, the forest officials could generate more detailed topography and desired thematic map. In addition, the data consistency in DBMS could be maintained by using SDE (Spatial Database Engine) for their job and share the standard forest database with others in real time.