- Vegetation index can be used to distinguish vegetation hits from the ground points, especially in photogrammetric point clouds when the real ground level is not visible.
- Compared to conventional approach, the additional processing steps in TerraScan are:
- Compute Vegetation Index Distances for each point
- How much the vegetation index value of a point differs from the limit
- Smooth distance values
- Reduce noise by averaging values inside local neighborhood
- Use distance rating in Ground Classification Routine
- Vegetation points are less likely included in the resulting ground class
- Compute Vegetation Index Distances for each point
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