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<DIV><FONT face=Arial size=2>Dear All:</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2> What I am currently working
could be summarized like this:</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2> 1. I applied some geometric feature
descriptors to the whole polyData (say, ColonPolyData1), and obtained some
qualified points which satified the criteria, but some small patches were also
generated due to noise;</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2> 2. I generated another polyData (say,
ColonPolyData2) with same data structure with ColonPolyData1, and visualized the
ColonPolyData2 by different color with ColonPolyData1;</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2> 3. Now I want to delete those
small undesired patches (or say, points) by setting a threshold using
ColonPolyData2->DeletePoint(ptID), where ptIDs are associated with
the undesired points;</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2> The access error was generated. I
checked with the previous messages in this mail list. I got some ideas, but
still cannot solve the problems.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2> I also found very good link: <A
href="http://www.bioengineering-research.com/vtk/vtkRemoveCellsFilter.htm">http://www.bioengineering-research.com/vtk/vtkRemoveCellsFilter.htm</A>, where
some genius authors provided very nice codes.
But I am not sure if my question be different
from those, which is that I donot want to really delete the points and
leave some holes there, and what I need to do is just to release those undesired
points from ColonPolyData2.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2> Who can give me some hints on
this?</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Best
Wishes,<BR>-----------------------------------------------------------------<BR>Dongqing
Chen<BR>Ph.D Research Assistant<BR>Rm. 07, Paul C. Lutz Hall<BR>Computer Vision
& Image Processing (CVIP) Lab<BR>Department of Electrical & Computer
Engineering<BR>Speed School of Engineering<BR>University of
Louisville<BR>Louisville, KY. 40292<BR>U.S.A<BR>Email: <A
href="mailto:dqchen@cvip.louisville.edu">dqchen@cvip.louisville.edu</A><BR>Phone:+1-502-852-2789
(Lab)<BR>
+1-502-852-6130
(Office)<BR>-----------------------------------------------------------------</FONT></DIV></BODY></HTML>