Among the model-based decomposition components, the change
detection map constructed from ΔPV exhibits good detectability of
damage conditions, as shown in the second row in Fig. 6. In particular,
the enhanced class in ΔPV corresponds to damaged urban areas,
while the reduced class can detect part of the flooded farmlands. Nonetheless,
there are false-alarms in the undamaged paddy fields in the
northwestern quarter of the image due to seasonal changes in land
cover type.