There is also an option for downsampling when detecting clusters. This option will speed up the detection process as fewer points will be analyzed during the detection. The downsample option keeps 1 point per cell and discards the rest of the points during the detection. The size of the cell is determined by the value inscribed for the “downsample size”. The higher this value is, the larger the cell size used; therefore, less points will be analyzed. A smaller downsample size will discard fewer points for the detection; therefore detecting clusters more accurately while taking more processing time.
The area to be analyzed must be considered before the detection takes place. The user can segment the point cloud using the fence tool; the clusterization tool will then only work on visible points. The user may also create an extraction of an area within the point cloud. Detecting clusters within an extraction speeds up the detection process because of the reduced amount of points considered.
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