Estimation of growth stage in cabbage farmland using multi-temporal satellite images

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  • 時系列衛星画像によるキャベツの生育ステージ把握
  • ジケイレツ エイセイ ガゾウ ニ ヨル キャベツ ノ セイイク ステージ ハアク

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This paper proposes the estimation of growth stage in cabbage farmland using multi-temporal satellite images. Although, the growth stages in the farming are defined as the establishing period, the growing period, the heading period, and harvest period, they are not applicable to satellite image analysis from the investigation of spectral features obtained on the ground. We show the spectral growth stages based on vegetable cover ratio, which are the first period, the middle period and the latter period, and adaptable to satellite image analysis. We propose a technique to identify the spectral growth stages, by using change of multi-temporal images, which were misclassified by a single satellite image analysis. The accuracy of the growth stage estimation is 76% using a single satellite image and 89% using multi-temporal ones. We demonstrate that the technique using multi-temporal images improves the accuracy of estimation.

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