The invention discloses a
deep learning river ice extraction method based on an optical and SAR
fusion image, and belongs to the technical field of
remote sensing geoscience application. The method comprises the following steps: acquiring an
optical image and an SAR image which are in the same area and contain
river ice distribution, preprocessing the
optical image and the SAR image, marking
river ice areas of the preprocessed
optical image and the preprocessed SAR image, and constructing a training
data set; a
deep learning extraction model is constructed, and the training
data set is used for training; and obtaining an optical image and an SAR image of a to-be-extracted river ice distribution region, obtaining a
binary image by using the trained
deep learning extraction model, converting the
binary image into vector data, removing a misjudged river ice region, obtaining a river ice region in the region, and completing river ice extraction. According to the method, advantages of
optics and SAR images are combined, an attention mechanism and a multi-level
feature fusion strategy are constructed, and
technical support is provided for refined river ice drawing in the cold and cold mountainous area.