Rapidly collecting vital information for major disasters, such as strong earthquakes, typhoons, floods and tsunamis, has often helped emergency responders to assess losses more timely and efficiently, and to monitor the progress in emergency response and recovery operations. However, it is often difficult to obtain damage information due to communication interruption and traffic disruption happened with a strong destructive earthquake. Remote sensing technology has had an enormous impact on quantifying post-earthquake damage, monitoring recovery and reconstruction progress, especially using high-resolution optical image