when terrestrial laser point-cloud data are employed for monitoring the facade of a building, point-cloud data collected in different phases cannot be used directly to calculate the deforming displacement due to data points in a homogeneous region caused by inhomogeneous sampling. Aiming at this problem, a triangular patch is built for the previous point-cloud data, the distance is measured between the latter point-cloud data and the former patch in the homogeneous region, and thus the distance of the deforming displacement is determined. On this basis, the software of laser point-cloud monito...
