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| Hauptseite > Publikationsdatenbank > Generating Views Using Atmospheric Correction for Contrastive Self-Supervised Learning of Multispectral Images |
| Hauptseite > Publikationsdatenbank > Generating Views Using Atmospheric Correction for Contrastive Self-Supervised Learning of Multispectral Images |
| Journal Article | FZJ-2023-02292 |
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2023
IEEE
New York, NY
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Please use a persistent id in citations: doi:10.1109/LGRS.2023.3274493 doi:10.34734/FZJ-2023-02292
Abstract: In remote sensing, plenty of multispectral images are publicly available from various landcover satellite missions. Contrastive self-supervised learning is commonly applied to unlabeled data but relies on domain-specific transformations used for learning. When focusing on vegetation, standard transformations from image processing cannot be applied to the near-infrared (NIR) channel, which carries valuable information about the vegetation state. Therefore, we use contrastive learning, relying on different views of unlabeled, multispectral images to obtain a pretrained model to improve the accuracy scores on small-sized remote sensing datasets. This study presents the generation of additional views tailored to remote sensing images using atmospheric correction as an alternative transformation to color jittering. The purpose of the atmospheric transformation is to provide a physically consistent transformation. The proposed transformation can be easily integrated with multiple channels to exploit spectral signatures of objects. Our approach can be applied to other remote sensing tasks. Using this transformation leads to improved classification accuracy of up to 6%.
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