LIS Vectorizer
LIS Vectorizer transforms point cloud data and derived segments into explicit 2D and 3D vector representations. The package supports Delaunay triangulation, adaptive and decimated surface meshes, polygon outlines, 3D hulls and specialised vectorisation methods. Typical applications include generating terrain meshes from LiDAR data, converting segmented objects into polygon outlines, modelling buildings as 3D block models, calculating object volumes from 3D hulls, and fitting catenary curves to classified power line points to create vector representations of individual cables.
Tool: Catenary Curve Fitting
| Features |
|---|
| • vectorization of power line cables by catenary curve fitting |
| • input: classified and segmentized point cloud |
| • output: 3D line shapes layer |
| • attributes include cable identifier and elasticity parameter alpha |
| Applications |
|---|
| • modelling of power line cables |
Tool: Create Decimated TIN
| Features |
|---|
| • creation of a decimated TIN from a point cloud, ususally a bare earth model |
| • iterative densification of the TIN until a user-defined maximum deviation to the input point cloud is met |
| • output: 3D polygon shapes layer |
| Applications |
|---|
| • adaptive meshing, sensitive to surface roughness and terrain breaks |
Tool: Extrude 3D Shapes
| Features |
|---|
| • extrusion of 3D polygon shapes layers to create 3D block models (LOD1) from outlines with vertex elevation |
| Applications |
|---|
| • creation of 3D block models (LOD1) |
Tool: Extrude Shapes
| Features |
|---|
| • extrusion of 2D polygon shapes layers to create 3D block models (LOD1) from outlines with relative or absolute height information |
| Applications |
|---|
| • creation of 3D block models (LOD1) |
Tool: Insert Breaklines into TIN
| Features |
|---|
| • insertion of 3D breaklines into a TIN by constrained Delaunay triangulation |
| • optional clipping of the TIN to an area-of-interest (AOI) |
| Applications |
|---|
| • mesh improvement by breakline insertion |
Tool: Polygon Outlines from PC Segments
| Features |
|---|
| • creation of planar 3D polygonal shapes (outlines) from point cloud segments |
| • optional line simplification |
| • optional polygon rectification to the main directions of the point cloud segment |
| Applications |
|---|
| • outlines of point cloud segments, e.g. building roofs/walls, joint planes |
| • planar patches for point cloud accurracy control |
Tool: Triangulate Segments
| Features |
|---|
| • creation of 3D meshes from point cloud segments |
| • each segment is triangulated on its own |
| • adaptive meshing, a maximum deviation to the original data can be specified |
| • optional: (non-planar) segment outlines |
| Applications |
|---|
| • meshes of point cloud segments |
| • segment outlines |
Tool: Volume Shapes from PC Segments
| Features |
|---|
| • creation of polygonal shapes from point cloud segments by Delaunay tetrahedralization |
| • output: 3D polygon shapes layer of mesh |
| Applications |
|---|
| • vector representation of voluminous objects |
| • volume calculation in 3D |