Quantification of marine macro-debris abundance around Vancouver Island, Canada, based on archived aerial photographs processed by projective transformation

Tomoya Kataoka, Cathryn Clarke Murray, Atsuhiko Isobe

研究成果: ジャーナルへの寄稿記事

4 引用 (Scopus)

抄録

The abundance of marine macro-debris was quantified with high spatial resolution by applying an image processing technique to archived shoreline aerial photographs taken over Vancouver Island, Canada. The photographs taken from an airplane at oblique angles were processed by projective transformation for georeferencing, where five reference points were defined by comparing aerial photographs with satellite images of Google Earth. Thereafter, pixels of marine debris were extracted based on their color differences from the background beaches. The debris abundance can be evaluated by the ratio of an area covered by marine debris to that of the beach (percent cover). The horizontal distribution of percent cover of marine debris was successfully computed from 167 aerial photographs and was significantly related to offshore Ekman flows and winds (leeway drift and Stokes drift). Therefore, the estimated percent cover is useful information to determine priority sites for mitigating adverse impacts across broad areas.

元の言語英語
ページ(範囲)44-51
ページ数8
ジャーナルMarine Pollution Bulletin
132
DOI
出版物ステータス出版済み - 7 1 2018

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Debris
aerial photograph
photographs
Macros
Canada
Antennas
beach
beaches
Beaches
georeferencing
airplanes
image processing
photograph
shoreline
pixel
spatial resolution
image analysis
Image processing
Pixels
Earth (planet)

All Science Journal Classification (ASJC) codes

  • Oceanography
  • Aquatic Science
  • Pollution

これを引用

Quantification of marine macro-debris abundance around Vancouver Island, Canada, based on archived aerial photographs processed by projective transformation. / Kataoka, Tomoya; Murray, Cathryn Clarke; Isobe, Atsuhiko.

:: Marine Pollution Bulletin, 巻 132, 01.07.2018, p. 44-51.

研究成果: ジャーナルへの寄稿記事

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