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• W3127348599 abstract "Superpixel segmentation is an important technique for image analysis. In this article, we develop a new superpixel segmentation approach and investigate its application on ship target detection in marine synthetic aperture radar (SAR) images. Existing superpixel segmentation algorithms often simply consider the intensity and spatial features, which may degrade the segmentation performance due to the low contrast between ship targets and the sea clutter background in marine SAR images. Besides, it is difficult for existing algorithms to adaptively select the weights of the features. Here, we propose a new Fisher vector (FV)-based adaptive superpixel segmentation (FVASS) algorithm to address the aforementioned issues. Our newly developed FVASS not only fuses the intensity and spatial features, but also the multiorder features introduced by FVs, resulting in a better segmentation performance (even with low signal-to-clutter ratios). The weights of the features considered in FVASS are adaptively adjusted by minimizing the sum of within-superpixel variances to maintain the compactness of superpixels. Experiments demonstrate that, compared with commonly used superpixel segmentation methods, the proposed FVASS algorithm enhances the segmentation performance of SAR images and further improves the detection performance of existing superpixel-based ship detectors." @default.
• W3127348599 created "2021-02-15" @default.
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• W3127348599 date "2021-01-01" @default.
• W3127348599 modified "2023-10-14" @default.
• W3127348599 title "Adaptive Superpixel Segmentation of Marine SAR Images by Aggregating Fisher Vectors" @default.
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• W3127348599 doi "https://doi.org/10.1109/jstars.2021.3051301" @default.
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