pan-sharpened composite images of Ghizo Island were acquired pre- and post-tsunami (23
September 2003 and 5 April 2007) to build house inventories for visual damage inspection,
as shown in Fig. 11 (Koshimura et al., 2010). The extent of the tsunami inundation zone is
determined by the supervised classification based on the NDVI of the post-tsunami satellite
imagery (Fig. 12), as already shown in section 2.1.