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<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'>I haven’t seen any replies to my
questions and thought maybe my post didn’t go out……<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'>In short I want to read in a series of BMP
or PNG images and display them as a volume with the original colors and opacity
(RGB or RGBA). It seems simple enough, but for some reason vtk doesn’t make
it obvious how to do it.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'>I can read in the images and display them
as a volume, but only with color and opacity gradients, not the original
colors.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'>Can someone please point me in the right
direction?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'>I’d also like to separate a 3D image
into multiple 3D images (1-Red, 1-Green, 1-Blue, 1-Alpha) so I can create
contour surfaces for each. (again, I am able to make contour surfaces, just not
the ones I need)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'>Any suggestions on this one?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'>Thanks<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'>Don<o:p></o:p></span></font></p>
<p class=MsoNormal align=center style='text-align:center'><font size=3
color=navy face="Times New Roman"><span style='font-size:12.0pt;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal align=center style='text-align:center'><font size=3
color=navy face="Times New Roman"><span style='font-size:12.0pt;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal align=center style='text-align:center'><font size=3
color=navy face="Times New Roman"><span style='font-size:12.0pt;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Casteel, Don <br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, October 13, 2005
9:08 AM<br>
<b><span style='font-weight:bold'>To:</span></b> <st1:PersonName w:st="on">vtkusers@vtk.org</st1:PersonName><br>
<b><span style='font-weight:bold'>Subject:</span></b> [new user] Using and/or
seperating original image colors</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Hello Everyone,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I am new to vtk and this user list, please bear with me.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>(BTW I have tried reading through the list archives with no
luck)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I am trying to read in multiple images and visualize them as
a volume.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I have been able to read the images and render surface
contours and volumes (not the way I need them)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>First…. I have been unable to figure out how to use
the colors and opacity from the original images in a volumeMapper.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Nothing I try works… VTK seems to only allow
converting the pixel values to a single scalar and apply a color and opacity
gradient against that single scalar.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>By setting the vtkPolyDataMapper.ScalarVisibilityOn I can
get a polysurface colored with the original image colors, But I can’t
find a way to do that with the VolumeMappers.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Second… I’m not able to figure out how to
separate the colors into separate surfaces, again VTK forces the color values
into a single gradient.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>This is all very confusing and frustrating because each of
the colors and the Alpha value in my images mean something different, and VTK
seems to force them into a single combined value.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I need to be able to pull out the individual RGBA components
into separate ImageData objects but this seems to be against the rules of VTK<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I will really appreciate any suggestions that may help me
out<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Thanks<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Don Casteel - Manufacturing Engineer<br>
<st1:place w:st="on">Delphi</st1:place> Thermal & Interior<br>
<st1:Street w:st="on"><st1:address w:st="on">4605 Airport Road</st1:address></st1:Street><br>
<st1:place w:st="on"><st1:City w:st="on">Gadsden</st1:City>, <st1:State w:st="on">Alabama</st1:State>
<st1:PostalCode w:st="on">35904</st1:PostalCode></st1:place></span></font><o:p></o:p></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Office: 256-413-4118<br>
Cell: 256-312-9195<br>
D/C: 154*82240*28</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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