I have a scanned head mesh (436K faces).
The person had a poney tail and I was no able to capture the details of the poney tail properly.
Does someone have a workflow to close this hole while keeping the shape as close as posisble to the scanned data? Ideally, only the poney tail is reworked.
I tried
duplicate border
patch surface
trim
The surface obtained does not fit exactly though and I am unable to join the new surface with the mesh. Could a solid be created that follows the mesh easily (contour for instance?) and then unioned? I looked at it but could not make it work either.
Using SSD or Poisson reconstruction on the mesh boundary gives a mesh which could be used to close the model anfter trimm and self-intersection cleanup.
scanned mesh repair is not Rhino’s strongest part. Trying to repair meshes by using nurbs surfaces can be quite tedious. One way to repair such cases in Rhino is to use
Thank you for your answer, i really appreciate your help!
I searched these functions in the Rhino command, but could not find these.
Are they GrassHopper functions?
Could you please let me know how I could replicate your picture?
Are there parameters to choose where the newly created red surface would connect to the existing mesh?
i noticed that too and used Rhino 5. Maybe we should contact the developer and ask if there could be an update for newer Rhino versions ? The PlugIn has been really useful for such cases in the past.
Hi Tom.
The commands are not available in rhino yet. if there is enough intereset for such a type of solution we will start thinking to make it available as a plugin. ponytail-filled-iCapp-open-Boundaryd.3dm (15.2 MB)
the attached model ha the fill in trimmed, but still with incompatible discretization at the boudary to the original, but this is only a small technical hurdle to overcome.
Result could be obtained by the click of a button.
KR
Stephan
Hi Tom
What do you mean with lack of similar smoothness?
Clearly there are infinitely many surfaces which interpolate the vertices and surface normals along the given boundary. Typically this surfaces have less ‘detail’ than the scan itself, but will have G1 continuity up to dicretization errors. The choice of base function for the interpolation will somehow affect the shape of the surface.
So your are missing the continuation of the ‘characteristics’ of the pony tail in the filling surface?
Stephan
So your are missing the continuation of the ‘characteristics’ of the pony tail in the filling surface?
Yes indeed. We can see that the hole was fixed as the surface looks so different (less detail as you mention) from the rest.
I know about no other method than to provide auxiliary curves or points which are used to shape the filling surface. As i said doing it automatically looks impossible for now because the target is ill-defined.
Think about the task to specify mathematically what is ‘continuation of the characeteristics’ ?
Stephan