<div dir="ltr"><div style="font-family:arial,sans-serif;font-size:12.727272033691406px">Hi,</div><div style="font-family:arial,sans-serif;font-size:12.727272033691406px">I realized that the <a href="https://github.com/qsnake/vtk/blob/master/Graphics/vtkAreaContourSpectrumFilter.cxx" target="_blank"><span class="" style="background-color:rgb(255,255,204);color:rgb(34,34,34)">contour</span> <span class="" style="background-color:rgb(255,255,204);color:rgb(34,34,34)">spectrum</span> for area computation function</a> in VTK is not using the B-Spline algorithm that Bajaj described in<a href="http://docs.lib.purdue.edu/cgi/viewcontent.cgi?article=2376&context=cstech" target="_blank"> his paper</a> . </div>
<div style="font-family:arial,sans-serif;font-size:12.727272033691406px">However, VTK cites Bajaj's paper for this function: <a href="http://www.vtk.org/doc/nightly/html/classvtkAreaContourSpectrumFilter.html" target="_blank">http://www.vtk.org/doc/nightly/html/classvtkAreaContourSpectrumFilter.html</a><br>
</div><div style="font-family:arial,sans-serif;font-size:12.727272033691406px">The VTK function "vtkAreaContourSpectrumFilter" computes the area of isosurface mesh, which is supposed to be not available in Bajaj's algorithm. So I am guessing it is not using Bajaj's algorithm.<br>
</div><div style="font-family:arial,sans-serif;font-size:12.727272033691406px">Is VTK's program going to be more efficient than the B-Spline approach? Or the problems they are solving are different? I am trying to request <span class="" style="background-color:rgb(255,255,204)">contour</span> <span class="" style="background-color:rgb(255,255,204)">spectrum</span> for my data. It will be nice to use VTK's implementation.</div>
<div style="font-family:arial,sans-serif;font-size:12.727272033691406px">Thanks,</div><div style="font-family:arial,sans-serif;font-size:12.727272033691406px">Xin Tong</div><div style="font-family:arial,sans-serif;font-size:12.727272033691406px">
The Ohio State University</div></div>