• 대한공간정보학회지
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• 제13권3호
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• pp.25-32
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• 2005

본 논문은 LIDAR 데이터와 수치지도를 이용한 점 기반의 3차원 건물모델링 방법을 제안하는데 목적이 있다. 본 논문에서 제안한 방법은 크게 건물점 추출, 지붕유형 분류, 지붕유형별 3차원 모델링 단계로 나뉜다. 먼저 수치지도의 건물 외곽선과 LIDAR 데이터를 중첩시켜 건물폴리곤 내에 있는 LIDAR 점들 중에서 지면과 벽면 및 수목을 제거하여 건물의 지붕점만을 추출한다. 추출된 건물 지붕점들은 ODR(Orthogonal Distance Regression) 방법을 통해 평면근사하여 점들이 평면상의 점이면 평면형(flat) 지붕으로 분류하고 그렇지 않으면 박공형(gable)과 원통형(arch)으로 근사한 후 평균제곱근오차가 작은 쪽으로 지붕유형을 결정한다. 실험결과 본 연구에서 제안한 방법은 3가지 유형의 단순 지붕유형을 성공적으로 분류하였으며, LiDAR 데이터와 수치지도를 이용한 자동 3차원 건물모델링의 가능성을 제시하였다.

• 대한토목학회논문집
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• 제26권3D호
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• pp.535-540
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• 2006

본 논문에서는 고해상도 컬러 입체영상을 활용하여 도심지역의 3차원 건물정보를 효율적으로 복원하기 위한 일련의 처리방법을 제안하고자 한다. 본 연구에서 제안된 방법은 BDT 기법을 활용한 건물 추출, Hausdorff 거리와 컬러인덱싱 기법을 활용한 영상정합, 마지막으로 사진측량기법을 활용한 건물복원 등의 3단계의 처리과정을 포함하고 있다. 제안된 알고리즘의 실험은 고해상도 위성영상의 대표격인 IKONOS 컬러 입체영상을 대상으로 수행되었으며, 실험을 통해 건물추출에 있어서 영상의 배경부분과 건물부분의 밝기값의 분산을 증가시키는 BDT 기법이 건물추출에 우수함을 확인할 수 있었다. 또한, 2가지 건물인식기법을 활용한 영상정합 과정에 있어서도 컬러정보와 경계정보를 모두 사용할 경우 대부분의 추출건물들을 자동인식하고 이를 초기위치로 원활한 영상정합이 수행될 수 있음을 확인하였다. 최종적으로 실험지역에 대한 3차원 건물정보는 전방 다항식비례모형을 통해 획득되었으며 기준자료와의 비교를 통해 정확도 분석을 수행하였다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2023년도 봄 학술논문 발표대회
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• pp.211-212
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• 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.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2002년도 학술논문발표회
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• pp.75-80
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• 2002

The purpose of this study is to conduct researches on the aspects of reconstruction and remodeling of low-rise, dilapidated apartment buildings in the provinces, using comparative methodologies, consequently coming up with the findings in the following. 1) Unlike the rebuilding projects in which the movement process tends to be made in a bulk (in a simultaneous manner), it turns out that when it comes to remodeling, it would be advisable to attempt moving the inhabitants as a group either by the size of their residence or by the building. 2) Given the peculiarities of the construction management mechanism, remodeling projects might seem disadvantageous on the part of the management on account of inadequate accumulation of information and experience. Hence, based on the impeccable assessment of the current status of the subject buildings from the phase of planning, its imperative to closely look into and take into consideration a variety of direct and/or indirect factors in advance of the implementation. 3) A series of comparative researches from the perspective of economical efficiency that remodeling projects appear profitable considering the overall costs including financial expenses, varied taxes, and so on that will be eventually brought forth during the reconstruction period, and all the more so when allowing for the consequential effects which they ought to have upon the natural and human resources, environmental and ecological condition, business potentials, etc. Amelioration to be desired on the basis of the findings above.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2004년도 Proceedings of ISRS 2004
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• pp.128-131
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• 2004

In this paper, we describe reconstructed 3D-urban modeling techniques for laser scanner and CCD camera system, which are loading on the vehicle. We use two laser scanners, the one is horizon scanner and the other is vertical scanner. Horizon scanner acquires the horizon data of building for localization. Vertical scan data are main information for constructing a building. We compared extraction of edge aerial image with laser scan data. This method is able to correct the cumulative error of self-localization. Then we remove obstacles of 3D-reconstructed building. Real-texture information that is acquired with CCD camera is mapped by 3D-depth information. 3D building of urban is reconstructed to 3D-virtual world. These techniques apply to city plan. 3D-environment game. movie background. unmanned-patrol etc.

• 한국건축시공학회지
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• 제4권2호
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• pp.119-128
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• 2004

Lately construction industry tends to prefer remodeling of existing buildings rather than new construction or reconstruction of buildings due to strengthening of several restriction related to real estates along with prolonged depression. And also, remodeling of building costs less and creates less wastes compared to reconstruction and so it is more profitable in financial and environmental view. However remodeling is process of creating new environment with existing building. Therefor remodeling must follow the procedure realizing problem and fix the problem based on through investigation on existing building and users requirement must be faithfully reflected. Specially in case of apartment houses, since vagueness on ownership and management authority on common parts exists. Hereupon, in this study we are to present the procedure of analyzing apartment house remodeling method through user requirement by approaching to several considerable factors in user request side.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2023년도 봄 학술논문 발표대회
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• pp.271-272
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• 2023

In this study, we conducted a case analysis of the building finish and equipment deterioration sector in the validity assessment of safety inspection findings for reconstruction. A total of 21 cases were analyzed to confirm the characteristic of performance score for each subsector. It is confirmed that the average performance score was generally affected by maintenance activity, had regional characteristics.

• 한국주거학회논문집
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• 제10권1호
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• pp.145-154
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• 1999

In this study, various factors affect on the reconstruction of the deteriorated apartment housing complex in the Taegu-City were analyzed. The conclusions obtained in this research were summarized as follows; 1) In case of 4 to 5 storied apartment buildings, those were main objects for reconstruction. The number of the buildings and households consisting apartment complex and the total building area and the ground area were appeared as major factors. Those factors were highly correlated with the consensus of reconstruction. 2) As a maximun area of reconstruction was limited, higher existing consensus capacity and its ratio affect negatively on reconstruction of deteriorated apartments. 3) The main motivation for reconstruction is disadvantages among the members of reconstruction association were main obstacles to reconstruct the deteriorated apartment buildings. Therefore, a resoanble alternatives for reconstruction plans and administrative managements were needed.

• Journal of information and communication convergence engineering
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• 제7권1호
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• pp.1-6
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• 2009

In order to obtain a 3-D urban model, an abstraction of the surface model is required. This paper describes works on the 3D reconstruction and modeling by the grouping 3D line segments extracted from the stereo matching of edges, which is 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.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2023년도 봄 학술논문 발표대회
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• pp.263-264
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• 2023

After January 2023, as part of the plan to realize housing stability for the people, the weights for each field of reconstruction safety diagnosis have been adjusted. Among them, the weight of the residential environment sector has been raised from 15% to 30%, so that it occupies a high proportion. The adequacy review will also be partially implemented if requested by the local government. Therefore, it is also required to improve the existing reconstruction safety diagnosis manual for rational review. In this study, we intend to examine the problems and points to be improved through the review cases from the introduction of the system to the present. Through this, it is intended to be used as basic data to approach changes in demand for reconstruction and future trends in the future housing market.