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- W4321488041 abstract "Interpreting ocean remote sensing images is still a challenge is worth studying because they can carry valuable information for various important applications. Due to the absence of labeled datasets, unsupervised object-based image analysis (OBIA) methods provide an effective solution to understand remote sensing images with its advantage of grouping local similar pixels into a homogeneous area. However, ocean remote sensing images usually have the characteristics of large size, large background, and coexisting of large and small objects, which result in previous OBIA methods easily falling into the difficulty of accurately segmenting the large and small objects at the same time, and the dilemma of time-consuming computation. To solve this problem, a novel multi-scale and multi-subgraph (MSMSG)-based image segmentation method is presented in this paper. First, a coarse-to-fine superpixel generation method is designed to generate optimal superpixels, which can not only solve the problem of coexisting large objects and small objects but also the problem of manually setting the initial segmentation number. Second, the proposed background removal strategy helps to eliminate the trouble of large background areas in ocean remote sensing images. Third, a multi-subgraph is constructed with the help of background removal. Finally, the multi-scale and multi-subgraph merging strategy is addressed to group all similar superpixels into a same cluster, which not only reduces the useless computation of nonadjacent superpixels but also avoids segmentation errors with the same scale. Experiments conducted on three different datasets show that the proposed segmentation method is high-performance and high-efficiency." @default.
- W4321488041 created "2023-02-23" @default.
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- W4321488041 date "2023-01-01" @default.
- W4321488041 modified "2023-09-29" @default.
- W4321488041 title "Multiscale and Multisubgraph-Based Segmentation Method for Ocean Remote Sensing Images" @default.
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- W4321488041 doi "https://doi.org/10.1109/tgrs.2023.3247697" @default.
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