"d only a brief analysis of the error propagation is provided here.The role of the image is to define the landslide-affected area, which then is used to select the pre- and post-landslide DTMs. Many factors related to the image, such as the resolution, the plane position, and the co-registration with the DTMs, will affect the range of the selected DTMs and lead to a reduction in the accuracy of the" . . . .