Triangulation of the point clouds
The Revo Scan software, which supports the MetroX 3D scanner from Revopoint, offers several options for triangulation, i.e. for converting the captured point cloud into a closed surface structure (mesh). This step is essential for further processing in CAD applications, for 3D printing or digital archiving. Triangulation takes place in the software as a downstream process and offers various setting options with which the user can influence the quality, resolution and smoothing of the resulting mesh geometry.
The Revo Scan software supports the following processes and options, among others:
1. Automated triangulation:
The software performs an automatic surface reconstruction based on the point cloud. This is usually done by Delaunay or Greedy triangulation, whereby points close to each other are connected to form triangles, taking into account local geometric coherence. The user can define the target resolution and the degree of smoothing at this stage. Higher resolution means a denser triangular structure, which has an impact on file size and post-processability.
2. Hole filling:
After triangulation, open areas or incomplete areas can be closed by automated hole filling. The software offers options to fill small holes directly during mesh export or to manually process specific areas. This usually involves a smoothing interpolation between the edge points of the gap without significantly changing the original geometry.
3. Mesh amplification and smoothing:
After creating the initial surface model, the user can simplify the mesh (decimation) to reduce the number of triangles without losing significant geometric information. This is particularly useful for models with a very high point density. Smoothing algorithms are also available to level out local unevenness. The strength of the smoothing can be regulated in stages.
4. Color information in the mesh:
The color or texture information, which may have been recorded with the MetroX (RGB textures), can be projected onto the surface during triangulation. The software offers options for exporting with vertex color or UV mapping, depending on the selected output format (e.g. OBJ, PLY or STL).
5. Export formats and data structure:
The exported meshes can be saved in various standard formats. The choice of format determines whether color values, normals and other meta information are retained. The software ensures that the generated models are compatible with common CAD and 3D editing programs.
6. Interactive control of triangulation:
Throughout the triangulation process, the user interface allows real-time visual control of the resulting model. By rotating, zooming and sectioning, the user can directly check the quality of the surface evaluation and adjust parameters if necessary.
The Revo Scan software offers a well-graded range of automated and controllable options for triangulation. The aim is to generate a technically reliable, reusable mesh even with imperfect point clouds. The algorithms are optimized for speed and user-friendliness without sacrificing basic intervention options.
- 1 - Introduction, unboxing and features
- 2 - The principle of the structured light method
- 3 - The functional principle of point clouds
- 4 - Triangulation of the point clouds in a mesh
- 5 - 3D for Dummies: One-Click-Solution
- 6 - Limits of the system and the effective accuracy
- 7 - Summary and conclusion
- 8 - Appendix: Datasheet
- 9 - Appendix: Quick Start Quide
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