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                <identifier>oai:data.mendeley.com/mfc95sgrbf.3</identifier>
                <datestamp>2025-05-07T15:05:12Z</datestamp>
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            <metadata><oai_dc:dc xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <dc:creator>Percacci, Riccardo</dc:creator>
    <dc:title>Dataset for Land/Water Semantic Segmentation in Tonga and other Pacific regions</dc:title>
    <dc:publisher>Mendeley Data</dc:publisher>
    <dc:description>Dataset for training CNN models (e.g. U-Net) for land/water semantic segmentation of Sentinel-2 images.
Features 424 Sentinel-2 TOA images of size 256x256 pixels, with corresponding targets (binary segmentation maps).
The channels included are Sentinel-2 bands B2, B3, B4, B5, B6, B7, B8, B8A, B11, B12, plus NDWI and NDVI (in this order).
Weight maps are included for training using a weighted loss function, in order to improve segmentation on important features, specifically small volcanic islands.

The weights of the pre-trained models used for our research are included as .keras files.
Code snippets include essential functionality to load the models, and pre-process Earth Engine images for input.</dc:description>
    <dc:subject>Use of Computers in Earth Sciences</dc:subject>
    <dc:subject>Remote Sensing</dc:subject>
    <dc:subject>Image Segmentation</dc:subject>
    <dc:subject>Seamount</dc:subject>
    <dc:subject>Tonga</dc:subject>
    <dc:subject>Volcanism</dc:subject>
    <dc:subject>U-Net</dc:subject>
    <dc:type>Dataset</dc:type>
    <dc:identifier>doi:10.17632/mfc95sgrbf.3</dc:identifier>
    <dc:identifier>oai:data.mendeley.com/mfc95sgrbf.3</dc:identifier>
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    <dc:date>2025-05-07T15:05:12Z</dc:date>
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