• Proceedings of the Korea Information Processing Society Conference
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• 2019.05a
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• pp.629-630
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• 2019

Canny Edge Detection Algorithm 을 이용하여 3D 스캐너로 생성된 입체 데이터에서 2D 도면 데이터로 추출 및 변환 하는 방법을 제안한다.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2008.11a
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• pp.670-673
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• 2008

The aim of this study is for performing the efficient and systematic facility maintenance management by using 2D CAD data and the technique of updating spatial DB. The existing system of the facility maintenance management and the performance is not properly made out utilizing the information about the construction drawings. Moreover, the management of the DB renewal, which is about the information of construction drawing, is not carried out properly Furthermore, this study draw the conclusion on the effectiveness of reducing maintaining active by the lack of the interior and exterior location information. This study suggest the method of the efficient maintenance management of facilities by using the technique of updating spatial DB and the facility location information.

• Korean Architects
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• s.576
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• pp.132-139
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• 2017

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2017.10a
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• pp.92-93
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• 2017

Before showing the real house, generally a broker shows the blue print of the house to a customer who looks for houes to reside. However, it is difficult to for the customer to realize the house in detail by the blue print. To solve this problem, meet develop model house system using the virtual reality technology. The develop system shows the blue print of the house in 3D on the android device and make it possible for the user to move in the house projected virtually by using controllers.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 1994.04a
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• pp.457-463
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• 1994

도면 수가 증가함에 따라 도면을 체계적으로 분류, 저장, 검색, 수정 또는 생 성하는 효율적인 시스템이 요구되고 있다. 본 논문에서는 이러한 요구를 만 족하고 각 생산 부서들과 중앙 관리 부서간의 신속한 정보의 공유 및 검색 이 가능하도록 하기 위하여 통합제조정보시스템의 한 부분인 도면정보 관리 시스템을 개발하였다. 이 시스템은 SUN SPARC II Workstation에서 개발되 었다. 소프트웨어로는 도면의 저장, 관리를 위해 CIMLINC사의 CICMCAD 2D를, 도면관련정보를 위해 Relational DBMS인 ORACLE을 사용하였다. 그 리고 이들의 정보를 통합하고 화면에 나타내기 위하여 CIMLINC사의 LINKAGE라는 Multi-Media용 소프트웨어를 이용하였다. LINKAGE 내에서 는 CIMSHELL이라는 내부 언어와 SQL*PLUS를 이용하여 각종 기능을 개 발하였다. 개발 내용으로는 신규도면작성(new drawing), 수정(edit), 도면조 회(search)기능이 있다.

• Journal of the Korea Institute of Building Construction
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• v.20 no.3
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• pp.289-296
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• 2020

This study suggests a methodology for automatically extracting placing information from 2D reinforced concrete details drawings and generating a 3D reinforcement placing model to develop a mobile augmented reality for bar placing work. To make it easier for users to acquire placing information, it is suggested that users takes pictures of structural drawings using a camera built into a mobile device and extract placing information using vision recognition and the OCR(Optical Character Registration) tool. In addition, an augmented reality app is implemented using the game engine to allow users to automatically generate 3D reinforcement placing model and review the 3D models by superimposing them with real images. Details are described for application to the proposed methodology using the previously developed programming tools, and the results of implementing reinforcement augmented reality models for typical members at construction sites are reviewed. It is expected that the methodology presented as a result of application can be used for learning bar placing work or construction review.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.2
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• pp.50-56
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• 2021

This study examines 3D scanning and how it is used in the construction field. 3D scanning technology was applied to a real space and compared with drawings in the planning and construction stages. 3D scanning technology has been widely applied in the field of construction, design, construction, and safety. The results of comparing 3D scanning data with drawings are as follows. First, the external shape and dimensions do not show much difference. Second, the internal shape and dimensions are different. Third, indoor lighting layouts are different in all buildings. 3D scanning should be an essential element in the construction stage before completion and should be used for supervision tasks such as material management, improving the efficiency of construction, and safety management through continuous 3D scanning using automation and robots. Follow-up studies in the field of architecture, such as BIM and process management, will be needed.

• Korean Journal of Construction Engineering and Management
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• v.1 no.3 s.3
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• pp.124-134
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• 2000

In construction projects, the design information, which should contain accurate product information in a systematic way, needs to be applicable through the life-cycle of projects. However, paper-based 2D drawings and relevant documents has difficulties in communicating and sharing the owner's and architect's intention and requirement effectively and building a corporate knowledge base through on-going projects due to Tack of interoperability between specific task or function-oriented software and handling massive information. Meanwhile, computer and information technologies are being developed so rapidly that the practitioners are even hard to adapt them into the industry efficiently. 3D modeling capabilities in CAD systems are enormously developed and enables users to associate 3D models with other relevant information. However, this still requires a great deal of efforts and costs to have all the design information represented in CAD system, and the sophisticated system is difficult to manage. This research focuses on the transition period from 2D-based design Information management to 3D-based, which means co-existence of 2D and 3D-based management. This research proposes a model of a compound system of 2D and 3D-based CAD system which presents the general design information using 3D model integrating with 2D CAD drawings for detailed design information. This research developed an integrated information management system for design and specification by associating 2D drawings and 3D models, where 2D drawings represents detailed design and parts that are hard to express in 3D objects. To do this, related management processes was analyzed to build an information model which in turn became the basis of the integrated information management system.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2012.05a
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• pp.249-251
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• 2012

Augmented Reality (AR) enables the enhanced realism and interaction by providing the overlaid digital information on the user's view of the physical world. In this paper, we propose an AR-based ship design visualization system for presenting ship 3D model in smart phones or table PCs. The proposed system compute corner points and feature points by contour finding method and harris corner detector, and build a ship-design drawing database. By using SURF algorithm, key feature points are extracted from ship-design drawing image which is obtained by mobile camera. Then ship-design drawing image is recognized by matching the feature points stored in DB and extracted key feature points. 3D ship structures are visualized by overlaying the ship-design drawing image on the smart phone or table PC's screen. Compared to conventional 2D ship-design, proposed system helps to easily understand the structures of the ship and reduce the business design period. Thus, Enhanced competitiveness of business is expected.

• Journal of the Society of Naval Architects of Korea
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• v.56 no.1
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• pp.66-74
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• 2019

In the field of shipbuilding design, the use of 3D CAD is becoming commonplace, and most of the large shipyards are conducting 3D design. However at the production site, workers are still working on 2D drawings rather than 3D models. This tendency is even worse in small-scale shipyards and block manufacturing shops. Particularly, in a manufacturing shop that is engaged in the outsourcing of blocks, it may not be possible to provide 3D model. However, the demand for 3D models in the production field is steadily increasing. Therefore, it would be helpful if 3D model could be generated from a 2D drawing. In this paper, we propose a method to extract template and unfolded surface shape information from shell template offset drawing using computer vision technology. Also a 3D surface model was reconstructed and visualized from the extracted information. The result of this study is thought to be helpful in the work environment where 3D model information can not be obtained.