Extract Edges (tripod scans)
|
|
This tool allows you to extract the edges of a grid point cloud, in form of polylines. You can also activate this function from the top menu by clicking Data management > Cloud processing > Extract edges (tripod scans), or by the context menu of any grid point cloud. |
The selected point cloud must be pre-processed running the Edge Detection filter.
You can select which discontinuities in the 3D point cloud you want to mark as edges. These can be the Depth discontinuities (points that are neighboring in the grid structure but far away in 3D position), the Orientation discontinuities (points that are neighboring in the grid structure, close to each other in 3D position, but having normals very different), or both.
The parameters Max search distance and Min edge length define the way edges are extracted. Max search distance is expressed in pixels and refers to distances in the grid's structure (range image). Max search distance determines how far away in the grid structure two points belonging to the edges must be connected in the same edge. Min edge length means that all the edges composed by less points than this parameter will be considered as noise and discarded.