Building damage information investigation after earthquake using single post-event PolSAR image
Authors:
- 3 November 2016
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- p. 7338-7341
Abstract
Rapidly and accurately obtaining collapsed buildings information of the earthquake-stricken areas can help to effectively guide the implementation of the emergency rescue and can reduce disaster losses and casualties. This work is focused on rapid building earthquake damage information detection in urban areas using a single post-earthquake PolSAR data. In this paper, the methods of polarization orientation angle (POA) compensation and Wishart supervised classification are employed to extract the collapsed buildings and undamaged buildings. In addition, the two parameters of the normalized difference of the dihedral component (NDDC) and the HH-HV Correlation Coefficient (ρHHHV) are proposed to improve the extraction accuracy of the collapsed buildings and undamaged buildings. The building damage assessment is carried out at the city block scale according to the building collapse rate.Keywords
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