• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
• /
• v.25 no.4
• /
• pp.347-354
• /
• 2007

Since large portal service providers started web services for 3D city models around the world using spatial imagery, the competition has been getting intense to provide the models with the higher quality and accuracy. The building models are the most in number among the 3D city model objects, and it takes much time and money to create realistic model due to various shapes and visual appearances of building object. The aforementioned problem is the most significant limitation for the service and the update of the 3D city model of the large area. This study proposed a method of generating realistic 3D building models with quick and economical texture mapping using multiple spatial imagery such as aerial photos or satellite images after reconstructed geometric models of buildings from building layers in digital maps. Based on the experimental results, the suggested method has effectiveness for the generation of the 3D building models using various air-borne imagery and satellite imagery quickly and economically.

• Journal of KIBIM
• /
• v.10 no.2
• /
• pp.1-11
• /
• 2020

BIM(Building Information Modeling) is a salient technology for influential innovation in the construction industry. The patent network analysis is useful for suggesting the direction of technology development and exploring the research and development field. Therefore, the purpose of this study is to analyze the BIM technology structure and core technologies according to the convergence of BIM technology and market expansion. In this study, social network analysis was conducted by establishing a co-classification IPC network for the United States BIM patent. In particular, the characteristics of the major technical areas in the BIM technology network were identified through centrality analysis. G06F017/00, digital computing or data processing method, is a core technology field in the BIM network. Arrangements, apparatus or systems for transmission of digital information, H04L029/00 is an influential technology across the network. B25J009/00 for program controlled manipulators is an intermediary technology field and G06T019/00, manipulating 3D models or images for computer graphics, is an important field for technological development competitiveness.

• Journal of KIBIM
• /
• v.13 no.4
• /
• pp.74-84
• /
• 2023

Modern construction projects have stakeholders from various construction fields, highlighting the importance of efficient information sharing and collaboration. The expanding scope of Building Information Modeling (BIM), particularly in the domestic construction sector, necessitates a Common Data Environment (CDE). However, applying foreign commercial CDE solutions within the domestic context is challenging due to the difficulty of aligning them with the unique organizational structures and characteristics prevalent in the country. Furthermore, the information review and approval processes specified by ISO 19650 often fail to harmonize adequately with the domestic design procedures, limiting the full utilization of CDE advantages. This study endeavors to develop a Korean CDE collaborative platform based on ISO 19650, with a focus on adapting workflows and information container systems to the domestic context. Building upon the requirements of ISO 19650-based CDE workflows and information containers, this research involves an in-depth analysis of information generation, sharing, review, and approval processes within domestic design organizations, offering tailored CDE workflows and information container systems that align with the specific needs of the Korean construction industry.

• Journal of KIBIM
• /
• v.3 no.1
• /
• pp.11-20
• /
• 2013

Mix-used development in urban renewal project is done to effectively utilize the limited downtown. Generally unlike a single project, It features placing a large number of different facilities(residential, commercial, business, cultural, etc.) which is each other organically linked. The purpose of this study is to suggest the method of modeling guide for 3D preliminary cost estimation considering visual and intuitive judgement of space in mix-used development Urban Renewal project. In this research, introducing SME(Standard Module and Element) breakdown structure, FID(Finish Identity) for estimating building space unit-based quantity take off was implemented. It could narrow the discrepancy of opinion between the stakeholders with more accurate cost-estimates, comparing to the traditional methods.

• TTA Journal
• /
• s.168
• /
• pp.100-103
• /
• 2016

(주)엠투엠테크는 승강기 산업분야에서 IoT 기반 스마트 디바이스를 개발 중인 스타트업 기업이다. 특히, 윈격진단, 포렌식 기능 등 확장된 관제서비스가 가능한 스마트 디바이스 개발에 주력하고 있다. 하나의 디바이스가 다양한 제조사의 승강기에 적용되려면 승강기의 주요 부품, 디바이스, 관제 센터 간의 표준화된 통신 체계가 필요하며, 기존 승강기의 안전을 담보할 수 있는 시스템 유지 관리 체계가 구축되어야 한다. 미래에는 전체 스마트 디바이스로의 연결을 더욱 확대하여 궁극적으로 스마트 빌딩, 도시로의 적용 역시 가능하게 할 단계적 진화 모델의 고려가 필요한 것도 물론이다. (주)엠투엠테크가 TIA의 중소 중견기업을 위만 표준 자문서비스를 신정만 것은 이 때문이었다. (주)엠투엠테크는 TTA 표준 자문전문가들과 함께 국제 표준을 기반으로 한 IoT 프로토콜을 적용해 제품을 업그레이드할 수 있는 시스템 아키텍처를 설계할 수 있었다.

• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
• /
• 2008.06a
• /
• pp.260-264
• /
• 2008

변화탐지는 도시모델의 갱신을 위해 중요한 단계이다. 이에 본 연구는 도시지역의 변화탐지를 위한 라이다데이터로부터 추출한 표면패치의 분류 방법을 제안한다. 제안된 방법의 주요 과정은 (1) 라이다 데이터로부터 생성된 DSM의 차분을 통해 변화영역을 탐지하고, (2) 탐지된 영역의 라이다 점으로부터 표면패치를 구성하고, (3) 구성된 각각의 패치의 종류를 지면 수목, 빌딩으로 분류한다. 제안된 방법을 실측데이터에 적용한 결과를 동일한 지역의 정사영상으로부터 육안검사를 통해 수동 생성된 기준데이터를 이용하여 검증하였다. 패치분류의 성공률은 99%로 평가되었다. 결론적으로 제안된 방법은 변화탐지를 위한 강인하고, 신뢰성이 높고, 효율적인 패치 분류방법으로 판단된다.

• Proceedings of the Korean Institute of Building Construction Conference
• /
• 2011.05a
• /
• pp.145-148
• /
• 2011

As a futuristic construction model, building information model(BIM) based project management system(PMIS) and mobile PMIS have been showing visible sign. However, researches on the 3D BIM based PMIS using mobile device are hard to find, result from limitation of mobile device application(slow speed at huge BIM file, display size, and etc.) and undefined standard of business processes. Therefore, this research aims at studying feasibility of mobile BIM PMIS based on cloud computing as a business model. In case of applying mobile BIM PMIS, 3D drawings and integrated building informations are possible on mobile devices in real time. it would support increasing the productivity of project participants as designer, engineer, supervisor, and etc. Globally, BIM based PMIS and Mobile BIM system, cloud computing based mobile BIM simulator are in the concept or experimental phase, therefore it is possible to secure global leading technology of IT and construction merger in the mobile BIM.

• Journal of KIBIM
• /
• v.12 no.4
• /
• pp.93-103
• /
• 2022

As the design environment of domestic infrastructure facilities shifts from a traditional co-work office system to a virtual digital co-work office, a CDE collaboration platform is required to build a digital co-work office suitable for the domestic design environment. In addition, a number of large multinational projects requiring collaboration from domestic and foreign construction companies are ordered, and procedures for performing tasks based on international standards such as ISO 19650 are required, so preparation for domestic designers is required. Therefore, this study aims to derive CDE requirements for the development of an ISO 19650-based CDE collaboration platform suitable for domestic design environments, and derived Korean CDE requirements based on ISO 19650 series and overseas CDE cases.

• Proceedings of the Korean Institute of Building Construction Conference
• /
• 2023.05a
• /
• pp.157-158
• /
• 2023

Building Information Modeling (BIM) design has been mandatory in Korea since 2016, and it has been gradually expanding in the industry, with a slow attempt to apply it in remodeling constructions. This is because Korea is facing a situation where many buildings are over 30 years old and require remodeling or reconstruction. The remodeling industry is also a growing market, as it saves construction time and cost compared to reconstruction. BIM is an ideal technology element for a competitive remodeling construction, as remodeling constructions face a complicated construction process from the start, including demolition, maintenance, and reinforcement to save the change process. However, there are still limitations in applying BIM to remodeling constructions, due to considerations of the existing building and the complicated requests of the inhabitants. BIM still has technical and environmental limitations for general use. In this study, I analyzed BIM application cases from existing studies and suggest what improvement points should be strengthened.

• Spatial Information Research
• /
• v.20 no.5
• /
• pp.49-56
• /
• 2012

Recently, various researches have been attempted to link or integrate BIM and GIS. In particular, some of the researches were progressed to convert the data model between the BIM standard model IFC and the GIS standard model CityGML. However, it is hard to utilize the previous research results yet because characteristics and domains of between two data models are very different, In order to obtain the correlation between BIM and GIS, in this research, we analyzed the characteristics between IFC and CityGML objects of each LOD, And, we analyzed the correlation of IFC and CityGML by performing mapping between IFC and CityGML objects from view point of building with these characteristics. In this research, based on these correlation analysis results, we proposed the efficient interrelation plan between IFC and CityGML.