Korean Journal of Remote Sensing (대한원격탐사학회지)

Korean Society of Remote Sensing (대한원격탐사학회)
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Tidal Flat DEM Generation and Seawater Changes Estimation at Hampyeong Bay Using Drone Images

드론을 이용한 함평만 갯벌 DEM 제작과 해수 변화량 파악

  • Lee, Hyoseong (Department of Civil Engineering, Sunchon National University) ;
  • Kim, Duk-jin (School of Earth and Environmental Sciences, Seoul National University) ;
  • Oh, Jaehong (Department of Civil Engineering, Junnam National University) ;
  • Shin, Jungil (Geo-story(Inc.)) ;
  • Jung, Jaesung (Department of Civil Engineering, Sunchon National University)
  • Received : 2017.03.28
  • Accepted : 2017.06.27
  • Published : 2017.06.30
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Abstract

In this study, digital elevation models(DEM) of tidal flat, according to different times, was produced by means of the Drone and commercial software in order to measure seawater change during high tide at water-channel in the Hampyung Bay. To correct the produced DEMs of the tidal flat where is inaccessible to collect control points, the DEM matching method was applied by using the reference DEM, that is previously obtained, instead of the survey. After the ortho-image was made from the corrected DEM, the land cover classified image was produced. The changes of seawater amount according to the times were analyzed by using the classified images and DEMs. As a result, it was confirmed that the amount of water rapidly increased as the time passed during high tide.

본 연구에서는 함평만에서 만조 시 갯골 해수 변화량 파악을 위해 드론과 영상처리 소프트웨어를 이용하여 시간대별 갯벌 DEM을 구축하였다. 그리고 접근이 곤란한 갯벌에서 기준점 측량 대신 과거 구축한 기준 DEM으로 DEM 매칭방법을 적용하여 제작 DEM을 보정하였다. 보정된 시간대별 DEM으로부터 정사 영상을 제작한 후, 토지피복 분류영상을 제작하였다. 시간대별 토지피복분류영상과 DEM을 이용하여 만조 시간대에 따른 해수 변화량을 파악하였다. 그 결과 만조시간이 지날수록 물의 양은 급속히 증가하는 것을 확인할 수 있었다.

Keywords

References

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  1. 한국의 연안원격탐사 활용 vol.36, pp.2, 2017, https://doi.org/10.7780/kjrs.2020.36.2.2.1