4.3.2. Laser scanning survey.Before applying the semi-automatic methodology to, TLS dataWe performed a number of preprocessing steps using Leica Cyclone.Software for point cloud registration coloring and cleaning (deletion,,,Of undesired points). Fig. 7 shows the corresponding colored.3D model.In order to get spatially homogeneous data we then, used.CloudCompare software to resample the point cloud using a, spatial.Parameter of 2 cm and to, calculate the normal vectors as described,,By Rusu (2009). The representation of the point cloud obtained by.Combining these normal vectors with one of the three proposed.Color schemes is shown in Fig. 8.Our methodology which combines, the colored point cloud and.Field analyses allowed us, to extract five discontinuity sets from the.Laser data. Figs. 9 and 10 show the resulting Schmidt net and the.Discontinuity sets revealed by the colored point cloud. The spatial.Organization of the discontinuity sets is reasonably consistent with.The results of the, compass survey but the laser data revealed the.Presence of an additional set. Plotting the orientation of the outcrop.Resultant plane on the stereo net was also a key element in drawing.Up the structural interpretation shown in Section 5.1.Table 2 summarizes all the values calculated for each cluster.,,, (orientation spacing persistence Fisher "s constant).
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