Only when running TerraScan macros on a project in TerraScan or through GeoCue’s LIDAR 1 CuePac can an overedge region be specified. The macro loads points from neighbor tiles to:
- support the algorithms
- maintain continuity between data files, such as providing for a continuous surface at the block edge
Should be done when doing routines that require information about neighboring points, such as:
- Ground Classification
- Key Point routines (Model and Contour)
Specifying an overedge amount for neighbors will cause TerraScan to load points from adjacent tiles and use them in the classification.
- Points in neighbor tiles are not reclassified
- A minimum of 10% neighbors should be used
- Some routines require more neighbors, as does some terrain
- For instance, the minimum building size provides a good rule of thumb for the ground routine as it dictates the initial surface which must underlay all points in the block for them to be considered for classification.