公开(公告)号：US20250155569A1

公开(公告)日：2025-05-15

申请号：US18940840

申请日：2024-11-08

Applicant: Southeast University

Inventor： Yanan DU ,  Decheng FENG ,  Gang WU

IPC: G01S13/90 ,  G06T7/11 ,  G06T7/521 ,  G06T7/55 ,  G06T17/05 ,  G06V20/10 ,  G06V20/17 ,  G06V20/50

Abstract: The present invention discloses a method and system for evaluating post-earthquake damage of building groups based on interferometric synthetic aperture radar (InSAR). Method includes: determining an investigation region, acquiring pre- and post-earthquake radar images of a corresponding district, and acquiring radar datasets included in radar images; acquiring a radar line-of-sight (LOS)-direction deformation map of investigation region by processing pre- and post-earthquake radar images using D-InSAR; acquiring a deformation in a main earthquake direction by decomposing an LOS-direction deformation; drawing a deformation classification map of buildings; acquiring pre- and post-earthquake optical remote sensing images of investigation region, and locating post-earthquake collapsed buildings; locating collapsed buildings in deformation classification map, comparing optical remote sensing images with deformation classification map, and locating exact positions of collapsed buildings; and evaluating post-earthquake damage of the buildings by evaluating post-earthquake damage conditions based on position information of collapsed buildings and the deformation classification map.