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- W1528606029 abstract "In this letter, a comprehensive study of the mapping of building collapse levels by the use of postearthquake synthetic aperture radar (SAR) images is addressed. Although previous studies have successfully quantified the collapse level by the use of postevent SAR, the types of features that are of benefit to the final accuracy still remain unknown. This letter takes the Yushu earthquake as a case study to contribute in two key areas. First, the Chinese dual-band airborne SAR mapping system (CASMSAR), which collected very-high-resolution X-band and P-band images (0.50 and 1.1 m, respectively) by interferometric and polarimetric modes, is comprehensively evaluated for the first time. Second, to discriminate intact and fallen structures, multiconfiguration SAR data features are analyzed, including 40 polarimetric, 3 interferometric, and 138 texture features. Furthermore, a random-forest decision framework is introduced to quantify the importance score of each feature and to improve the discrimination accuracy. The CASMSAR experiment results indicate that the texture is recommended as a powerful input to quantify the extent of building collapse in Yushu." @default.
- W1528606029 created "2016-06-24" @default.
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- W1528606029 date "2015-10-01" @default.
- W1528606029 modified "2023-10-16" @default.
- W1528606029 title "Building Collapse Assessment by the Use of Postearthquake Chinese VHR Airborne SAR" @default.
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- W1528606029 doi "https://doi.org/10.1109/lgrs.2015.2443018" @default.
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