Sentinel-2 Remote Sensed Image Classification with Patchwise Trained ConvNets for Grassland Habitat Discrimination
نویسندگان
چکیده
The present study focuses on the use of Convolutional Neural Networks (CNN or ConvNet) to classify a multi-seasonal dataset Sentinel-2 images discriminate four grassland habitats in “Murgia Alta” protected site. To this end, we compared two approaches differing only by first layer machinery, which, one case, is instantiated as fully-connected and, other results ConvNet equipped with kernels covering whole input (wide-kernel ConvNet). A patchwise approach, tessellating training reference data square patches, was adopted. Besides assessing effectiveness ConvNets patched multispectral data, analyzed how information needed for classification spreads patterns over convex sets pixels. Our show that: (a) an F1-score around 97% (5 × 5 patch size), provides excellent tool patch-based pattern recognition without requiring special feature extraction; (b) limit single pixel: performance network increases until sizes are used and then starts decreasing.
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ژورنال
عنوان ژورنال: Remote Sensing
سال: 2021
ISSN: ['2315-4632', '2315-4675']
DOI: https://doi.org/10.3390/rs13122276