Delete Selected Cloud Points
Directly selecting and deleting cloud points is often the most practical way to clean up outliers or unwanted data from a point cloud. Use the shortcut Ctrl+Alt+D at any time to initiate the command.
Individual cloud points can be selected but region selection provides a more effective means of eliminating a large number of points at one time. Review the Rectangle, Circle, and Polygon selection tools available on the Home tab under Navigation. Selection is a 2D process operating in the view plane of the screen. This means that setting the view appropriately is very helpful. Use the right-click mouse button to rotate the graphics and use Ctrl+Right-Click to rotate the view about the current perspective. Also keep in mind that selection can be iterative in that you can select data, rotate the view and select more points before accepting the selection.