항공 및 드론 영상을 이용한 테트라포드 연안활동장소에 대한 공극률 계산 기법에 관한 연구 KCI

Title
항공 및 드론 영상을 이용한 테트라포드 연안활동장소에 대한 공극률 계산 기법에 관한 연구
Alternative Title
Computation of Porosity of Tetrapods as Coastal Activity Place using Aerial and Drone Images
Author(s)
전호군; 박주한; 양찬수
KIOST Author(s)
Jeon, Ho Kun(전호군)Park, Ju Han(박주한)Yang, Chan Su(양찬수)
Publication Year
2020-04
Abstract
In 2016 and 2019, the death rate from fall accidents at breakwater and tetrapod was 14.2% and 16.3% of whole coastal activity accidents, a higher proportion than other types of accidents. But there is no quantitative basis for assessing the risk of fallen at tetrapod. Thus this study introduces the method of calculating the porosity of tetrapod by image processing. Aerial image of the National Geographic Information Institute (NGII) and drone image was used. The target area was the tetrapod of the breakwater near Korea Maritime and Ocean University, Yeongdo-gu, Busan City, South Korea. We compared porosity results from Otsu threshold and Adaptive threshold methods. The result shows that Adaptive method gives about 2 times difference between aerial and drone image while Otsu method shows 3 times difference. It is revealed that the adaptive method can be applied with porosity measurement for tetrapod.
ISSN
2288-7903
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/38817
DOI
10.20481/kscdp.2020.7.2.97
Bibliographic Citation
한국연안방재학회지, v.7, no.2, pp.97 - 104, 2020
Publisher
(사)한국연안방재학회
Keywords
Tetrapod; Accident; Coastal activity; Risk assessment; Remote sensing
Type
Article
Language
Korean
Publisher
(사)한국연안방재학회
Related Researcher
Research Interests

Satellite Oceanography,Marine Safety & Security,Remote Sensing,위성해양학,해양 안전 및 보안,원격탐사

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