Extracted Surface Region (VTK) – Need Guidance on Smoothing & Cutting (VTK/CGAL)

[christeenjosecdac]

Hi Everyone,

I'm new to VTK and CGAL, and I'm currently working on a project that involves surface region extraction, smoothing, and precise cutting.

Current Progress:

• I have extracted the surface region from an STL file using VTK by drawing contours.
• The extracted region is saved as vtkPolyData.

Next Steps & Challenges:

• I want to generate a new smooth region just above the extracted surface (with a specific thickness).
• The new region needs smoothing and mesh optimization (removing noise or irregularities).
• Finally, I need to accurately cut portions of this newly generated region.

Reference Video:

To clarify my requirement, I’ve attached a YouTube embed link showing a similar process:

https://www.youtube.com/embed/LPpRCM7dRAA?start=1154&end=1287

Looking for Suggestions On:

1. Smoothing & Refinement: What are the best techniques (in VTK or CGAL) to smooth the newly created layer?
2. Region Generation: How can I generate a new layer above the existing vtkPolyData with a uniform thickness (e.g., 3mm)?
3. Cutting & Trimming: What tools/methods in VTK/CGAL would be best for cutting the portion accurately?

I would greatly appreciate any insights, suggestions, or code snippets that can help me move forward.

Thanks in advance for your support!