• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2004.03a
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• pp.77-83
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• 2004

최근 통신, 전자, 제어, 기계등의 첨단기술을 적용하여 도로와 차량 그리고 운전자의 일체화를 통한 교통체계의 효율화, 첨단화, 정보화를 실현하기 위한 ITS(Intelligent Transport System)연구가 많이 진행되고있다. 그러나 이러한 ITS에서의 기본적인 자료인 도로위치정보의 정확도가 낮은 단계인 자료로서 시스템을 구축하고 있다. 또한 기존도로의 설계자료나 수치지도가 없는 지역인 경우가 많아 그 자료들을 획득하는데 많은 비용이 소모된다. 따라서 본 연구에서는 GPS 측위기법과 수치사진측량의 기법으로 도로중심선을 추출하여 보다 정확한 기법을 제시하고자한다.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.17 no.3
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• pp.283-292
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• 1999

Aerotriangulation for the large scale mapping(photo-scale l/5,000) was studied with the projection center determined by kinematic DGPS positioning. For the feasibility study, the accuracy and error was analyzed with the comparison between a projection center from the conventional model adjustment and the projection center determined by the kinematic DGPS positioning. Kinematic DGPS-supported Bundle adjustment was also performed. The accuracy of projection center, determined by L1 phase data observed within 30 km from base station, was stable, and the planimetric accuracy(RMS) is 13 cm and the vertical accuracy(RMS) is 15 cm with 4 ground control points, which satisfies the national standard of digital mapping. Thus, this study shows that GPS-assisted aerotriangulation can be used for economic digital mapping.

• Proceedings of the Korea Water Resources Association Conference
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• 2008.05a
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• pp.1354-1358
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• 2008

수질오염관리 정책이 배출원 관리에서 유역공동체를 중심으로 한 사전 예방적 유역관리정책으로 변화됨에 따라 단순문서에 의한 오염원 자료관리 등의 업무처리체계로는 수질오염총량관리제 실시에 따른 실무지원이 어렵다. 이를 위해서는 수질오염총량관리기술지침에 근거한 하천, 호소 및 오염배출실태자료의 체계적 관리가 필요하며, 유역환경(단위유역, 소유역 등)에 대한 기초정보와 국가수질측정망 자료 및 자치단체 소하천 등의 수질자료의 연계활용이 필요하다. 따라서 경기도에서는 수질오염총량제 시행에 따른 유역관리현황 정보를 구축하고, 국가하천을 중심으로 한 중앙정부의 유역환경정보와 지방하천 및 소하천을 중심으로 한 지방자치단체의 유역환경정보를 통합, 운영함으로써 통합적인 유역관리지원 체계를 구축하고자 한다. 이를 통해 수질측정망 및 수위-유량 등 수문자료와 배수구역도, 단위유역도, 항공사진 등 지리정보를 활용한 유역관리정책 기반을 구축하고, 경기도 및 31개 시 군의 유역관리정책수립 및 시행에 필요한 논리적, 기술적 정보제공 시스템을 구축하고자 한다. 따라서 본 연구는 오염총량관리제도의 의무제 전환이 예측되는 상황에서 향후 광역시도간 광역계획 혹은 경기도내 시군의 오염총량관리계획에 능동적으로 대응하기 위해 경기도 차원의 수질측정망 자료, 오염원 실태조사 자료 및 수위-유량 등 수문자료와 배수-구역도, 토지이용도, 단위 유역도, 항공사진 등 GIS 자료 등을 데이터베이스화하여 경기도내 시 군 환경담당부서의 업무분석을 통해 업무에 활용되는 주요 환경자료에 대한 업무지원체계를 확립하기 위한 수질오염정보화 시스템을 구축하고 그 활용방안을 제시하는데 그 목적이 있다.

• The Journal of the Korea Contents Association
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• v.20 no.6
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• pp.367-380
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• 2020

360 product photography is one of the realistic media technologies that can observe subjects from various angles as one of the real-world VR production methods. This study examined the effect of 360 product photography on the intention to Continuous Use through the technology acceptance model. The results of the online survey showed that informative, which is the characteristic of 360 product photography, affects both ease of use and perceived usefulness, while reliability and entertainingness affect only perceived usefulness. Internal innovation had an impact on perceived ease, but not on perceived usability. Ease of use, both mediators, had a positive effect on sustained use intention. These findings can be used as a reference for various studies in the field of 360 product photography which is still insufficient. In addition, it can provide strategic implications for the production direction of 360 product photos.

• Journal of the Korean Association of Geographic Information Studies
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• v.3 no.2
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• pp.24-36
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• 2000

This study deals with the optimal method of orthophoto products using the non-photogrammetric scanners. we scanned positive film of aerial photographs at the different resolution and producted the orthophoto using the automatically generated DEM based on the Digital Photogrammetric Workstation, considering aerial image resolutions, DEM interval, resampling method and outpixel size. As a results, the acquired accuracy was worse in horizontal, but good in vertical. So It will be expected that orthophoto using non-photo grammetric scanner is good enough for the acquisition of GIS data and the calculation of soil volumes.

• Korean Journal of Cognitive Science
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• v.2 no.2
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• pp.359-403
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• 1990

This paper introduces a blackboard system which extracts imbedded road and building structures irom aerial photograph images. The role of three major component(blackboard, knowledge source, and control module)in blackboard system will be illustrated in terms of knowledge representation and control strategies. The hypothesis on a blackboard will be organized in a hierarchical form, the knowledge sources which generate hypothesis and verify them will be shown in detail, and the control module will describe how the knowledge sources can dervie solutions. Especially this paper shows that searching image strutures can be greatly simplified by the use of a mapping image.

• Proceedings of the Korea Contents Association Conference
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• 2003.11a
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• pp.395-401
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• 2003

다목적 대형 댐의 건설로 수몰된 과거의 삶의 공간을 20년이 지나서 다시 복원한다는 것은 그곳에 살던 실향민 등에게는 참으로 반가운 소식이다. 본 연구에서는 1980년대 초에 완공된 충주댐으로 인하여 물 속에 잠긴 청풍지구를 수몰이전의 입체 지형 공간적으로 원형복원하기 위한 원격탐사 기법을 적용한 것이다. 비교적 해상도가 좋은 인공위성 사진자료와 댐 수몰이전의 디지털 위성영상 데이터를 수집하고, 수몰직전에 제작된 지형도를 이용하여 위성영상자료의 통합 적용하여 수몰직전의 지형공간정보를 현재시간으로 영상 복원하기 위하여 원격탐사 기법을 적용한 것이다 이를 위하여 지형도에서 추출한 등고선과 현재의 등고선과의 접목을 통하여 청풍 주변지역을 중심으로 당시의 수치표고모형을 생성하였다. 또한 이를 입체적으로 보여주기 위한 투시조감도를 각 방향에서 생성함으로서 수몰이전의 아름다운 모습을 3차원적으로 영상복원 하였다. 또한 좀더 가까이서 수몰마을을 보기 위한 근접비행시뮬레이션 동영상을 제작하여 과거 기억 속의 고향을 영상에서 찾아볼 수 있도록 한 것이다.

• Journal of Korean Society for Geospatial Information Science
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• v.11 no.3 s.26
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• pp.3-11
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• 2003

This study has made photographing respectively by changing the photographic distance, converging angle, picturing direction by use of Rollei d7 metric and d7 $metric^{5}$ that is a measurement digital camera. And also in order to minimize the errors happened at the relative orientation, we have sorted out the round target that the relative orientation is automatically on the programming and have calculated RMSE by carrying out the bundle adjustment. We think that such a study could be used as very important basic data necessary in deriving the optimal photographic conditions by the close-range digital photogrammetry and in judging such a degree.

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.9 no.3
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• pp.155-164
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• 1997

A comprehensive and systematic field monitoring program was initiated since October 1989, in order to investigate the temporal and spatial variation of shoreline position at northern part of Pea Island, North Carolina. Aerial photographs were taken every two months on the shoreline extending from the US Coast Guard Station at the northern end of Pea Island to a point 6 miles to the south. Aerial photographs taken were digitized initially to obtain the shoreline position data. in which a wet-dry line visible on the beach was used to identify the position of shoreline. Since the wet-dry line does not represent the “true" shoreline .position but includes the errors due to the variations of wave run-up heights and tidal elevations at the time the photos taken, it is required to eliminate the tide and wave runup effects from the initially digitized shoreline .position data. Runup heights on the beach and tidal elevations at the time the aerial photographs taken were estimated using tide data collected at the end of the FRF pier and wave data measured from wave-rider gage installed at 4 km offshore, respectively A runup formula by Hunt (1957) was used to compute the run-up heights on the beach from the given deepwater wave conditions. With shoreline position data corrected for .wave runup and tide, both spatial and temporal variations of the shoreline positions for the monitoring shoreline were analyzed by examining local differences in shoreline movement and their time dependent variability. Six years data of one-mile-average shoreline indicated that there was an apparent seasonal variation of shoreline, that is, progradation of shoreline at summer (August) and recession at winter (February) at Pea Island. which was unclear with the uncorrected shoreline position data. Determination of shoreline position from aerial photograph, without regard to the effects of wave runup and tide, can lead to mis-interpretation for the temporal and spatial variation of shoreline changes.nges.

• Journal of the Korean Institute of Traditional Landscape Architecture
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• v.33 no.1
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• pp.88-96
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• 2015

This purpose of this study was to identify the landscape characteristics of cultural heritage area in Gapgot fortification by performing text analysis of related literature and antique maps. And accumulate modern photograph to investigate the landscape of modern. As a additionally analysis, was examined landscape of Gapgot fortification area using aerial photograph. The results were as follows. First, Gapgot fortification has the historical value as symbolic and practical gateway to Ganghwa island caused by geographical position. And historical culture resources were located in Gapgot fortification area such as through traffic, military facilities. Secondly, According to literature and antique maps, Gapgot fortification area was village and military facilities from Goryeo dynasty. The village and military facilities was expanded with Jinhae pavilion since construct Ganhwa castle. Thirdly, In modern Gapgot fortification area appear consecutive coastal landscape when entry Ganghwa bridge. But, inhibiting elements of landscape should be remedied.