Validation of Extraction Methods of Marine Debris in the Ocean Using Satellite Remote Sensing

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  • 衛星画像を用いた海ゴミ抽出手法の検証
  • エイセイ ガゾウ オ モチイタ ウミ ゴミ チュウシュツ シュホウ ノ ケンショウ

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The flow of marine debris in the ocean causes extensive damage to coastal environments. It is considered important to understand the flow of marine debris in the ocean for environmental research purposes. The small size of most marine debris in the ocean means that marine debris cannot be confirmed directly, even when a high-spatial-resolution satellite image is used. Thus, in order to extract candidate pixels containing possible marine debris, pixels with spectra that differ from those of the surrounding ocean and the wave crests were identified. As a first step towards monitoring marine debris, a method for identifying marine debris floating on the ocean was proposed that used a histogram showing the distance from the regression line of the scatter diagram of satellite spectral bands. In this paper, a new method using spectral angle mapper(SAM)in four or eight dimensional space corresponding to satellite spectral bands is proposed. And the validity of the method using SAM is also discussed.

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