In the present case, the structural monitoring method developed is based on testing whether
deformation occurs between two epochs of structure measurements or not. The use of a
parametric 3D surface generation technique based on RBF function has allowed us to overcome
the single point accuracy of TLS, seeing that surface elements derived from a large number of
points could originate deformation parameters. As a result, a surface analysis is performed
comparing data acquired in different epochs and georeferring them into the same reference
system. Particularly, a deformation analysis using multiple orthogonal cross sections (horizontal
and vertical) is applied to 3D surfaces. With the resulting sections we can extract automatically
3D displacements vectors not only applied to a limited number of points, but also to the whole
wall structure. As a result, a map of deformations which includes the displacements between
different measurement epochs is obtained.