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<div class=Section1>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Hello Xiaofeng,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>You are my hero for the day! Your change worked.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Based on your modifications I boiled it down to a single change to
what I had. The vtkTransform attached to the vtkPolyDataMapper had to
hold the inverse of the vtkImageReslice reslice axes rather than the same
matrix. I had the incorrect sense of this transformation in my mind, I
thought it was to transform from the original coordinate system to the resliced
coordinate system. Actually it’s the opposite. I was looking
for the problem in the wrong part of the pipeline.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I appreciate your help. Thanks.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> --
Scott<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Xiaofeng Z
[mailto:xf10036@hotmail.com] <br>
<b>Sent:</b> Tuesday, May 11, 2010 3:06 PM<br>
<b>To:</b> Scott Johnson; VTK<br>
<b>Subject:</b> RE: [vtkusers] Reslicing issues (Continued)<o:p></o:p></span></p>
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</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>Scott,<br>
<br>
try the attached file and let me know if it works.<br>
<br>
Notice that I use my own customized DICOM reader, which does not invert the
rows, hence the world x and y coordinate increases from lower left corner to
upper right corner on the screen.<br>
<br>
Xiaofeng<br>
<br>
<br>
<o:p></o:p></span></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>Date: Tue, 11 May 2010 12:01:15 -0500<br>
From: Scott.Johnson@neuwave.com<br>
To: vtkusers@vtk.org<br>
Subject: [vtkusers] Reslicing issues (Continued)<o:p></o:p></span></p>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>Hi
Folks,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>I
officially throw myself on the mercy of the VTK Gods.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>My
platform is VTK 5.4.2 on Windows XP.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>I’ve
been working on this reslice issue off and on for awhile now and am officially
stumped. I’ve worked up a piece of code which could eventually be
turned into an example for the examples list if desired. I’ll
attach the code and a CMakeLists.txt file. If the image data I’ve
been using is needed I’ll need somewhere to put it. (It’s 22
MB zipped and not suitable to attach to an email.)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>The
application is attempting to display resliced image data and an intersection
with a polygonal shape. The Axial view works fine, but the other views
don’t show the sliced sphere in the proper location. They do show
up on the proper slice, but not in the proper XY location in the
viewport. I seem to be running into a fundamental problem when converting
between the original image coordinate system and the resliced coordinate
system.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>The
attached code is annotated with ‘PROBLEM’ in the comments which is
outlining the problems I’ve been running into. I’ll chalk
this up to a learning experience which builds character.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>Any
help is appreciated. Thanks<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>
-- Scott<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'> <o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p>
<div class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>
<hr size=2 width="100%" align=center>
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