• 제목/요약/키워드: Spatial technology

검색결과 4,212건 처리시간 0.031초

MMS LiDAR 자료 기반 정밀 공간 정보 매핑 시스템 (Accurate Spatial Information Mapping System Using MMS LiDAR Data)

  • 정윤재;최형욱;박현철
    • 한국지리정보학회지
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    • 제21권1호
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    • pp.1-11
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    • 2018
  • MMS(Mobile Mapping System) 자료를 이용한 정밀 공간 정보 매핑은 고정밀 3차원 지형 모델 구축, 시설물 관리를 위해 중요하며, 특히 도로 중앙선 매핑 작업은 정밀 도로 지도 구축을 위해 필요하다. 본 연구에서는 MMS LiDAR(Light Detection And Ranging) 자료를 이용하여 정밀 공간 정보인 도로 중앙선을 매핑 하는 반자동화 방법을 개발하였다. 우선 주어진 MMS LiDAR 자료를 기반으로 보간법을 이용하여 반사강도 영상을 제작하고, 에지 검출기를 이용하여 반사강도 영상으로부터 선형 세그먼트들을 추출하였다. 최종적으로 추출된 선형 세그먼트들 중에서 도로 중앙선 세그먼트를 수동으로 선택하였다. 추출된 도로 중앙선의 정확도 검증 결과, 0.065m의 정확도를 보여주었으며, 도로 중앙선이 도로 신호와 인접한 일부 지역에서 에러가 발견되었다.

모바일 공간정보서비스 활용 활성화 방안 연구 (A Study on the Strategies for Promoting Spatial Information Service for Mobile Environment)

  • 황정래;김태훈;최현상
    • Spatial Information Research
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    • 제20권4호
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    • pp.57-67
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    • 2012
  • 최근에 공간정보 활용분야 확대와 스마트폰 확산에 따라 모바일 공간정보 서비스의 시장이 증가하고 있는 추세이다. 특히, 스마트폰 사용자들은 위치기반서비스, 소셜네트워크서비스 등의 공간정보 서비스를 보다 쉽고 편리하게 활용할 수 있기를 기대하고 있다. 하지만, 국내 공간정보기술 개발의 잠재력은 보유하고 있으나 모바일 네트워크 환경에서의 다양한 공간정보 서비스 개발을 지원할 수 있는 정책적 지원이 부족한 실정이다. 이에 모바일 기반에서의 공간정보 활용 및 산업 활성화를 위한 정책적 지원방안 마련이 필요하다. 따라서 본 연구에서는 국내외 모바일 앱/웹 현황 조사와 모바일 공간정보 관련 전문가 수요조사 및 분석을 통해 모바일 공간정보 활성화를 위한 정부차원의 개선방안을 제시한다.

유전알고리즘을 이용한 지속가능 공간최적화 모델 기초연구 - 선행연구 분석을 중심으로 - (Basic Study on Spatial Optimization Model for Sustainability using Genetic Algorithm - Based on Literature Review -)

  • 윤은주;이동근
    • 한국환경복원기술학회지
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    • 제20권6호
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    • pp.133-149
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    • 2017
  • As cities face increasing problems such as aging, environmental pollution and growth limits, we have been trying to incorporate sustainability into urban planning and related policies. However, it is very difficult to generate a 'sustainable spatial plans' because there are trade-offs among environmental, society, and economic values. This is a kind of non-linear problem, and has limitations to be solved by existing qualitative expert knowledge. Many researches from abroad have used the meta heuristic optimization algorithms such as Genetic Algorithms(GAs), Simulated Annealing(SA), Ant Colony Optimization(ACO) and so on to synthesize competing values in spaces. GAs is the most frequently applied theory and have been known to produce 'good-enough plans' in a reasonable time. Therefore we collected the research on 'spatial optimization model based GAs' and analyzed in terms of 'study area', 'optimization objective', 'fitness function', and 'effectiveness/efficiency'. We expect the results of this study can suggest that 'what problems the spatial optimization model can be applied to' and 'linkage possibility with existing planning methodology'.

국가별 풍하중 기준과 풍동실험에 따른 대공간 구조물 지붕의 풍압계수 분석 (Analysis of Wind Pressure Coefficient for Spatial Structure Roofs by Wind Load Standards and Wind Tunnel Tests)

  • 천동진;윤성원
    • 한국공간구조학회논문집
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    • 제17권4호
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    • pp.103-113
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    • 2017
  • Spatial Structure has suffered from a lot of damage due to the use of lightweight roofs. Among them, the damage caused by strong winds was the greatest, and the failure of the calculation of the wind load was the most frequent cause. It provides that wind tunnel test is used to calculate the wind load. However, it is often the case that the wind load is calculated based on the standard of wind load in the development design stage. Therefore based on this, the structure type and structural system and member design are often determined. Spatial structure is usually open at a certain area. The retractable roof structure should be operated with the open roof in some cases, so the wind load for the open shape should be considered, but it is not clear on the basis of the wind load standard. In this paper, the design wind pressure of a closed and retractable roof structure is calculated by KBC2016, AIJ2004, ASCE7-10, EN2005, and the applicability of wind pressure coefficient is compared with wind tunnel test.

패션 플래그쉽 스토어에 나타난 퍼놀로지(Funology) 공간 특성연구 (A Study on Characteristics of Funology Spatial of the Fashion Flagship Store)

  • 오혜린;김개천
    • 한국실내디자인학회논문집
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    • 제26권6호
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    • pp.191-201
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    • 2017
  • In the 21st century, modern society is rapidly changing paradigm of environment with advancement of advanced technology and improving income levels. Such a paradigm reflected in modern design and emerged as a new spatial aspect through various cultural and artistic expressions, thus becoming a crucial role in commercial space. Reflecting on this phenomenon, fashion brands have expanded the concept of a variety of cultural, artistic, and experience cultures with a variety of cultural and artistic sectors in each of the world's major cities. The fashion companies began to focus on fashion programs featuring "Funology" as the fun which creates a sense of curiosity rather than a meaningless space and a fun experience. Therefore, this study analyzes the spatial characteristics of fashion flagship store sites using characteristics of fashion flagship store presented in the expressions of fashion, and analyzes the spatial characteristics of the fashion flagship store based on the spatial characteristics derived from the spatial characteristics of the fashion scene. Based on these results, we confirm the relationship between the Fashion Flagship and the Funology. Design Aspects of the Fashion Flagship Store with Elements of Fun and We expect continuous research as a strategic factor that provides limitless ideas for many design and creative activities.

Radiography with Low Energy Protons Generated from Ultraintense Laser-plasma Interactions

  • Choi, Chang-Il;Lee, Dong-Hoon;Kang, Byoung-Hwi;Kim, Yong-Kyun;Choi, Il-Woo;Sung, Jae-Hee;Kim, Chul-Min;Kim, I-Jong;Yu, Tae-Jun;Lee, Seong-Ku;Pae, Ki-Hong;Hafz, Nasr;Jeong, Tae-Moon;Ko, Do-Kyeong;Lee, Jong-Min
    • Journal of the Optical Society of Korea
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    • 제13권1호
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    • pp.28-32
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    • 2009
  • In order to obtain high quality images of thin objects, we performed an experiment of proton radiography by using low energy protons generated from the interaction of an ultrashort ultraintense laser with solid targets. The protons were produced from a thin polyimide target irradiated by the laser pulse, and their maximum energy was estimated at up to 1.8 MeV. A CR-39 nuclear track detector was used as a proton radiography screen. The proton images were obtained by using an optical microscope and the spatial resolution was evaluated by a Modulation Transfer Function (MTF). We have achieved about $10\;{\mu}m$ spatial resolution of images. The obtained spatial resolution shows about $4{\sim}5$ times better value than the conventional X-ray radiography for inspection or non-destructive test (NDT) purpose.