• Proceedings of the Korean Institute of Building Construction Conference
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• 2018.05a
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• pp.37-38
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• 2018

BIM(Building Information Modeling) in the architecture, VDC(Virtual Design and Construction) defined CIFE(Center for Integrated Facility Engineering) of Stanford university in USA, and Data-driven design definition issued by TECDOC-1284 of IAEA are doing data-level design generated by 3D CAD technology, integrating and managing related information based on the 3D model, and Using 3D models effectively during nuclear power plant life cycle. 3D model of domestic nuclear power industry is using interference review between design fields, 4D system linked 3D construction model and schedule activity, but the 3D model generated in the design phase is effectively not utilized during the construction, operation, decommissioning. therefore, This study is aimed to suggest 3D model LOD(Level of Detail) advancement method through the analysis of existing literature, 2D drawings, and 3D models throughout nuclear power plant lifecycle.

• International conference on construction engineering and project management
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• 2015.10a
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• pp.674-675
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• 2015

A 3D indoor model becomes an indiscernible component of BIM (Building Information Modeling) and GIS (Geographic Information System). However, a huge amount of time and human resources are inevitable for collecting spatial measurements and creating such a 3D indoor model. Also, a varied forms of 3D indoor models exist depending on their purpose of use. Thus, in this study, three different 3D indoor models are defined as 1) omnidirectional images, 2) a 3D realistic model, and 3) 3D indoor as-built model. A series of reconstruction methods is then introduced to construct each type of 3D indoor models: they are an omnidirectional image acquisition method, a hybrid surveying method, and a terrestrial LiDAR-based method. The reconstruction methods are applied to a large and complex atrium, and their 3D modeling results are compared and analyzed.

• Journal of information and communication convergence engineering
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• v.5 no.1
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• pp.78-82
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• 2007

This paper propose a building reconstruction method of urban area for a 3D GIS with stereo images. The 3D reconstruction is performed by the grouping 3D line segments extracted from the stereo matching of salient edges which are derived from multiple images. The grouping is achieved by conditions of degrees and distances between lines. Building objects are determined by the junction combinations of the grouped line segments. The proposed algorithm demonstrates effective results of 3D reconstruction of buildings with 2D aerial images.

• Proceedings of the Korean Information Science Society Conference
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• 2001.10a
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• pp.166-168
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• 2001

3D GIS(Geographical Information System)은 2D GIS를 고도값을 고려한 3D 공간으로 확장한 GIS System이다. 3D GIS는 기존의 2D와는 다른 Data Format을 기반으로 훨씬 다양한 기능을 지원하는 Operation들을 제공한다. 본문에서는 각 노드들의 상관 관계를 묘사하는 데 장점을 가진 Topological Data Model에 대해 알아보고, 이 모델에서 지원이 가능한 여러 가지의 3D Operation들을 알아보고 도시내의 다양한 상황하에서 기능을 지원 할 수 있도록 한다.

• Journal of the Korea Society of Computer and Information
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• v.14 no.6
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• pp.117-123
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• 2009

In this paper, An algorithm which converts 2D video frames into 3D video frames of parallel looking stereo camea is proposed. The proposed algorithm finds the disparity information between two consecutive video frames and generates 3D video frames from the obtained disparity maps. The disparity information is obtained from the modified iterative convergence algorithm. The method of generating 3D video frames from the disparity information is also proposed. The proposed algorithm uses coherence method which overcomes the video pattern based algorithms.

• Proceedings of the Korean Information Science Society Conference
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• 2007.06b
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• pp.214-218
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• 2007

그래픽 시스템은 대부분 3D로 바뀌어 가고 있으며, 점차 그 비중이 더해 가고 있다. 하지만 3D 기하도형을 직접 제작하는 일은 많은 시간과 노력을 필요로 하기 때문에 현재, 2D 이미지의 정보를 추출하여 3D 기하도형을 생성하는 연구가 활발히 이루어 지고 있다. 본 논문에서 2D 이미지의 명암비 정보와 사용자가 입력하는 3D 포인트 정보를 이용하여 3D 기하도형을 생성하는 방법에 대하여 제시한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2005.11a
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• pp.209-212
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• 2005

현대 시각예술의 총아로 불리는 3D 캐릭터 애니메이션 제작기술은 영화, TV, 광고, 인터넷, 게임 등에서 많이 활용되고 있고, 제작기술 또한 나날이 발전하고 있다. 하지만 하나의 완성된 캐릭터 애니메이션이 제작되기까지 수없이 많은 비용과 시간을 필요로 한다. 본 시스템은 Humanoid 기반으로 3D 아바타를 생성하고, 캐릭터 애니메이션의 모델링에 있어서 자연스러운 애니메이션을 좀더 쉽고 유용하게 표현하기 위한 방법을 구현한다. 또한 캐릭터 데이터와 애니메이션 데이터를 어느 정도 분리하여 한번 생성된 애니메이션을 다른 캐릭터에 그대로 적용시켜 재사용할 수 있도록 하였다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2018.01a
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• pp.211-212
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• 2018

본 논문에서는 문화콘텐츠 캐릭터를 3D모델링 도구를 이용하여 디자인하고 3D 프린팅 기술을 접목하여 출력하여 판매하고자 하는 창업에 대한 교육과정을 제시하고자 한다. 이를 위해 첫 단계로서 3D 모델링 도구의 전반적인 특성을 살펴보고 3D 캐릭터 모델링 교육을 위한 교육과정으로 어떠한 교과목들이 제시되어야 하는지 제시해보고자 한다.

• Journal of Korea Multimedia Society
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• v.20 no.3
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• pp.581-592
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• 2017

Geographic Information System (GIS) is a method of expressing objects in a space. Currently, many research and developments are being conducted to implement 3D GIS. In previous studies, 3D GIS applications have been developed using Unity 3D, which is a 3D engine with good development accessibility. However, it requires manual work to enter various formats of GIS data, making it difficult to immediately reflect GIS data that change frequently. To improve this problem, this study developed a method for automatically reading and outputting various GIS data from the existing Unity 3D application. The improved application could read Satellite Images, Aerial Photographs, Digital Elevation Models (DEM) and Shapefiles with no transformation through other commercial programs, and they could be implemented as 3D objects. This study automated the GIS data conversion which had been manually performed and as a result, the manpower, time, and resources required for 3D GIS implementation can be saved.

• Proceedings of the IEEK Conference
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• 2008.06a
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• pp.749-750
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• 2008

It is often required to display 3-D data onto a 2-D screen and to examine and verify validity of data. LIDAR data is a good example. They represent 3-D spatial information in text format. However, it is very difficult to examine data on a 2-D screen. A 3-D data viewing system has been implemented and tested in order to solve the problem.