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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> I have two small questions, and want
to ask for any suggestion from this mail list. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2> I could display the 3D model (surface
rendering), and I may figure out its 2D axial/sagittal/coronal projections, then
</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>1). how could I find the corresponding 2D points on
these three projects for a given 3D point, say, if I have a 3D point on the
3D model, which VTK class I should use to find its projection pionts
on 2D axial, sagittal and coronal?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2> 2). How could I measure or compute
the distance between any 3D points, say, which VTK class allows me to
know its 3D position if I click on a 3D point?</FONT></DIV>
<DIV><FONT face=Arial size=2> </FONT> </DIV>
<DIV><FONT face=Arial size=2>Best
Wishes,<BR>-----------------------------------------------------------------------------<BR>Dongqing
Chen, Ph.D.<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>