The present invention relates to a method of generating stream topographical information using a drone and spatial information and, more particularly, to a technique of generating a DEM by processing an inclination technique and an area expansion technique by means of spatial information technology from three-dimensional DSM data acquired by a drone. A study site is selected and drone images are acquired. Orthophotos and DSM data are constructed through image matching. Since the constructed DSM data includes vegetation and trees in a stream, the inclination technique is applied based on point cloud data obtained during UAV photographing so as to generate the DEM based on a stream ground. After 100 verification points are selected, altitude accuracy of the DSM and DEM data is evaluated by using a measurement value calculated through virtual reference station (VRS) measurement and total station measurement, thereby providing reliability of the DEM data by drone point cloud-based inclination technique.

    본 발명은 드론과 공간정보를 이용한 하천지형정보 생성 방법에 관한 것으로, 보다 상세하게는 드론으로 취득한 3차원 DSM 자료로부터 경사도 기법과 영역확장법을 공간정보 기술로 처리하여 DEM을 생성하는 기법을 개발하였으며, 연구대상지를 선정하고 드론 영상을 취득하였으며 영상매칭을 통해 정사영상과 DSM 자료를 구축하였고, 구축한 DSM 자료는 하천내 식생이나 수목을 포함하고 있기 때문에 하천 지반을 기준으로 하는 DEM을 생성하기 위해 UAV 촬영시 취득된 포인트 클라우드 자료를 기반으로 경사도 기법을 적용하고, 100개의 검증점을 선정한 후 VRS(Virtual Reference Station, 가상기준점)와 토탈스테이션 측량을 통해 산정한 측량값을 활용하여 DSM과 DEM 자료의 표고정확도를 평가함으로써 드론 포인트 클라우드 기반 경사도기 법에 의한 DEM 자료의 신뢰성을 제공한다.


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    Title :

    River topography information generation method using drone and geospatial information


    Additional title:

    드론과 공간정보를 이용한 하천지형정보 생성 방법


    Contributors:
    LEE GEUN SANG (author) / JUNG KWAN SUE (author) / YU WAN SIK (author) / CHOI MI KYOUNG (author)

    Publication date :

    2018-12-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    G06Q Datenverarbeitungssysteme oder -verfahren, besonders angepasst an verwaltungstechnische, geschäftliche, finanzielle oder betriebswirtschaftliche Zwecke, sowie an geschäftsbezogene Überwachungs- oder Voraussagezwecke , DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES / B64C AEROPLANES , Flugzeuge / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT




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