무인항공기를 활용한 정사영상제작에서 지상기준점 위치 간격과 비행촬영기법에 따른 정사영상정확도 향상에 관한 연구

윤부열,윤원섭 한국산업융합학회 2018 한국산업융합학회 논문집 Vol.21 No.6

It is conservative to say that lots of research is performed as measures to use UAV for application to the rapid spatial information and its application is faced with settlement stage to some extent. In addition, Korea Land and Geospatial Informatix Corporation autonomously produces work regulation which is applied to every kind of orders and National Geographic Information Institute (2018) has notified public surveying work instructions about unmanned aerial device for the rapid spatial information construction. The results acquired by UAV are comprised of contents about accuracy improvements for the orthophoto when reviewing pertinent regulations. The results acquired by UAV are comprised of contents about accuracy improvements for the orthophoto when reviewing pertinent regulations. As a result, it is known that error amount has been sharply increased from 400m separation distance, and this study proposes that cross flight is able to reduce irregular error occurrence as measures to acquire stable results.

항공사진측량용 타겟을 이용한 수치도화 및 지적경계 추출에 관한 연구

윤부열 한국산업융합학회 2022 한국산업융합학회 논문집 Vol.25 No.6

Currently, in Korea, aerial photogrammetry is being studied for cadastral boundaries and numerical maps. Since the announced value of cadastral survey is closely related to ownership, the accuracy and reliability of the published value should be emphasized above all else. However, although aerial photogrammetry has great advantages in economic feasibility and surveying efficiency, it has many limitations when extracting the boundary of cadastral survey based on the acquired image. In order to improve these limitations, in this study, an aerial target was applied to obtain reliability improvement. Therefore, in order to examine the usefulness of aerial photogrammetry for cadastral survey application, cadastral boundary extraction and accuracy comparison analysis were conducted.

저가형 드론영상을 이용한 수치지형도 수정·갱신업무 적용 가능성 실험 평가

윤부열 한국지리정보학회 2017 한국지리정보학회지 Vol.20 No.4

In current, as the release of national base map with an equivalent scale and accuracy for the whole territory areas in South Korea, rapid spatial information industry such as national land development, GIS, and car navigation are used in a variety of spatial information industry as decision making method, and a lot of research and policies are proposed for the wide expansion of spatial information industry. For this, as of 2013, it contributes to the latest trend of spatial information field in order to solve the problems for the latest trend of spatial information, replacing modification of base maps as dividing the whole territory to zone with policy transformation by ordinary modifications. Therefore, this paper evaluates the possibility of modification and renewal of national base maps(scale: 1:5,000) using drones which currently get the limelight from a variety of research fields and industries. In particular, as a result of overlapping orthophoto, 3D point clouds extracted from images acquired by low-cost drones, and digital maps which are applied for the tasks of modification and renewal, it presents 0.2m precision and 0.1m accuracy. This means that drone-based photorgammetry technique can be fully utilized in the tasks of digital map modification and renewal because it conforms the error range of work regulation in making the national base maps(scale 1: 5000). 현재 국가기본도는 국토 전역에 동일한 축척과 정확도로 제작하여 배포됨으로서 국토개발 GIS, 차량용 내비게이션 등 각종 주제도 및 신속한 공간정보 산업에 의사결정용으로 다양한 분야에 활용되고 있으며 공간정보 산업의 전반적인 확대를 위해 많은 연구와 정책을 제시하고 있다. 이에 따른 일환으로 공간정보의 최신성에 대한 문제점을 해소하기 위해 전국을 권역으로 나누어 기본도를 수정했던 것을 2013년부터는 상시 수정으로 정책 변경하여 공간정보의 최신성 확보에 일조하고 있다. 따라서 본 연구에서는 현재 많은 연구와 다양한 산업에서 각광받고 있는 드론(Drone)을 활용하여 국가기본도의 수정 및 갱신 가능성을 평가하였다. 특히 저가형 드론에서 취득한 정사영상정보와 3차원 점군(Point Clouds)을 수치지형도와 중첩하여 3차원 위치정보를 동시에 취득하여 수정·갱신업무에 적용한 결과 0.2m 정밀도와 0.1m의 정확도를 나타내고 있다. 이는 국가 기본도(축척: 1/5,000) 제작 작업규정의 오차범위를 준수하고 있어 수치지도 수정·갱신 업무까지도 충분이 활용이 가능한 것으로 판단된다.

수치지적도화를 위한 항공사진측량의 정확도 분석

윤부열 한국산업융합학회 2022 한국산업융합학회 논문집 Vol.25 No.6

Recently, many studies have been conducted to utilize the digital aerial photogrammetry method in the field of cadastral surveying. The representative models of digital cameras currently used for aerial photogrammetry are classified into line-type and convex-type cameras, so the representative models were selected and analyzed. The purpose of this study was to analyze whether the accuracy suggested by the cadastral survey enforcement rules was satisfied by comparing the orthogonal and ortho image performance. As a result, there were some representative false points that exceeded the acceptable range, but the results extracted from most of the images were shown to satisfy the acceptable range. Therefore, it can be said that the application of digital aerial photogrammetry to the cadastral field in the technical aspect has sufficient potential.

남극지역 지반 특성 규명을 위한 3차원 영상화

윤부열,최현(Choe, Hyun) 대한공간정보학회 2017 한국지형공간정보학회 학술대회 Vol.2017 No.5

경량 항공사진촬영 시스템을 이용한 남극 세종과학기지의 수치지형도 제작과 활용에 관한연구

윤부열(Yun Bu Yeol),이재원(Lee Jae One),손호웅(Shon Howoong) 대한토목학회 2009 대한토목학회논문집 D Vol.29 No.1D

세종과학기지(KingSejong Station)가 위치한 킹조지섬(King George Island)은 지역 특성상 남극대륙으로 향하는 관문이면서 전초기지와 같은 역할을 하는 지역으로 한국의 남극 활동 영역 확장에 지대한 영향을 끼치고 있다. 그러나 현재 세종과 학기지 주변의 지리정보는 정밀측량이 이루어 지지 못하여 우리나라 활동영역에 대한 정확한 지리적 위치정보를 확보하지 못한 상태이며, 또한 지리정보구축의 가장 기본적이면서 세종과학기지의 국제 활동에 대한 묵시적 표현수단이라 할 수 있는 지도를 외국에 의존하여 사용하고 있는 실정이다. 따라서 본 연구에서는 경량 항공사진측량을 적용하여 지리정보구축에 필요한 수치지형도를 제작하고 기존의 수치지형도와 비교하여 빙하 후퇴와 변화 분석을 실시함으로써 향후 남극 환경과 관련한 연구에 실용적인 기초자료로 제공하고자 한다. The King George Island, where the King Sejong Station is located, represents one of the gateways to the Antarctica from the point of its geographical aspect. It also serves as an advanced post, and plays an important role in the extending for Korea's Antarctic research activities. The existence of maps is not only a basic element for the constructing geographic informations supporting these activities, but also an implied way of announcing the sovereignty over the KingSejong Station in global world. However, the precise surveying for the geographic information has not been earned out, and thus topographical maps as well as geographic information assuring enough accuracy are still missed in this area. This fact had forced Korea to rely on using maps produced by foreign countries. Therefore, this study aims to generate digital topographical maps of 1: 5,000 scale for the constructing geographic information using lightweight aerial photogrammetry system first. And further, it will contribute to offer practical base data for the future research related to the Antarctic environment through the analysis of glacier retreat and change using this new digital map comparing with existing one.

VRS RTK-GPS/GLONASS 위성의 통합 활용에 대한 효율성 평가

윤부열(Yun Bu Yeol),이재원(Lee Jae One),이동락(Lee, Dong Rak),최혜원(Choi, Hye won) 한국측량학회 2014 한국측량학회 학술대회자료집 Vol.2014 No.4

무인비행체(UAV)를 활용한 최적의 노선측량 촬영기법 연구

윤부열 ( Bu-yeol Yun ) 한국산업융합학회 2021 한국산업융합학회 논문집 Vol.24 No.2

Route surveying refers to surveying for the planning and construction of facilities built over a narrow and long distance such as roads, railroads, waterways, pipelines, transmission lines, and ropeways. The general route surveying method is an important process so that the center of the route is connected and staked, and vertical and cross-sectional surveys are performed along the center line to calculate the amount of construction work according to the slope and plan height of the route, and to prepare detailed drawings after skeleton surveying. If various basic drawings are calculated using an unmanned aerial vehicle for such route surveying, it is believed that the effects of shortening the process and reducing construction costs can be obtained. Therefore, this study attempted to contribute to the improvement of reliability in the application of route surveying using an unmanned aerial vehicle by deriving an optimal photographing technique by conducting route photography in various ways.

디지털 영상과 LIDAR 자료를 이용한 수치지도 갱신

윤부열 ( Bu Yeol Yun ),홍정수 ( Jung Soo Hoong ) 대한지구물리학회 2006 지구물리 Vol.9 No.2

지적경계 추출을 위한 항공 타켓 설치 방안에 관한 연구

윤부열(Yun Bu-yeol),이재원(Lee, Jae-One),이인수(Lee, In-Soo),박치영(Park Chi-Young) 한국측량학회 2011 한국측량학회 학술대회자료집 Vol.2011 No.4

Cadastral survey is Central of country geospatial information, an essential tool, and physiotherapy shape country space for efficient land administration and most detailed state information for individual land. Therefore, in this study, to apply digital aerial survey actually to cadastral survey, manufactured cadastral target is utilized to extract boundary in permission error range and achieve cost-cutting and business period shortening when Cadastral Resurvey Project.