To improve the lack of deep learning dataset of coastal ecological
scenes and low accuracy of multi-scale objectives semantic segmentation
for remote sensing image classification, we take three types of coastal typical
ecological supervision multi-scale objectives of mangrove, raft cultivation
and pond aquaculture as research objects, constructs a benchmark dataset
for coastal ecological supervision, improves the UNet feature fusion by
integrating batch normalization and spatial dropout modules, and proposes
a multi-scale deep convolutional semantic segmentation model. The model
has an overall accuracy of 92% on the test set, a kappa coefficient of 0.87, and a
mIoU of 82%. The experimental results show that the coupled stacking of batch
normalization and feature fusion spatial dropout can effectively suppress multiscale
objectives semantic segmentation overfitting and improve the model accuracy
and generalization performance. The proposed model and the constructed semantic
segmentation dataset for coastal ecological supervision can provide decision support for
ecological restoration, mapping and comprehensive management in coastal areas.