STORMBEE Software User Manual
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Think 3D BVBA
Version N°1.1, last modified 30/09/2018
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Figure 5.15 CloudCompare cross-section zoomed in (1 meter)
8.
Rotate that zoomed-in piece of the point cloud until you see it from its (in-plane) side for which
the data points should be in one plane (Figure 5.16) and zoom in further (legend 0.25m). Look at
how close the different coloured layers of data points match each other. You can estimate
(roughly) the quality of the synchronisation of the scans by looking at the distance they span and
compare it visually with the reference distance in the right-bottom corner. For this cross-section,
you can see that the synchronisation of the different data sets has around 10cm accuracy. This
does NOT mean that the point cloud data within one scan has 10cm accuracy! Only the
synchronisation quality is assessed here. Within a single scan, you can check the (out-of-plane)
distribution of points on a flat surface of a scanned object (wall, floor, roof, road…). They should
be as close together normal to the plane a possible, or in other words, the plane/surface should
be as thin as possible. A good quality scan is where the plane thickness is only a few centimetres
thick (see thickness surface purple point cloud in Figure 5.16).
Figure 5.16 CloudCompare cross-section in-plane quality control