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Detection of Bark Beetle Attacks using Hyperspectral PRISMA Data and Few-Shot Learning
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Detection of Bark Beetle Attacks using Hyperspectral PRISMA Data and Few-Shot Learning
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Paper
Detection of Bark Beetle Attacks using Hyperspectral PRISMA Data and Few-Shot Learning
2025
Overview
Bark beetle infestations represent a serious challenge for maintaining the health of coniferous forests. This paper proposes a few-shot learning approach leveraging contrastive learning to detect bark beetle infestations using satellite PRISMA hyperspectral data. The methodology is based on a contrastive learning framework to pre-train a one-dimensional CNN encoder, enabling the extraction of robust feature representations from hyperspectral data. These extracted features are subsequently utilized as input to support vector regression estimators, one for each class, trained on few labeled samples to estimate the proportions of healthy, attacked by bark beetle, and dead trees for each pixel. Experiments on the area of study in the Dolomites show that our method outperforms the use of original PRISMA spectral bands and of Sentinel-2 data. The results indicate that PRISMA hyperspectral data combined with few-shot learning offers significant advantages for forest health monitoring.
Publisher
Cornell University Library, arXiv.org
Subject
