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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Have a look at vtkImageBlend for ideas on how to combine two images<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">JB<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> vtkusers-bounces@vtk.org [mailto:vtkusers-bounces@vtk.org]
<b>On Behalf Of </b>Eduardo Poyart<br>
<b>Sent:</b> 15 May 2013 07:24<br>
<b>To:</b> vtkusers@vtk.org<br>
<b>Subject:</b> Re: [vtkusers] Crossfade volumes<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">I actually had no success using vtkSimpleImageToImageFilter. The filter works if I use SetInputData to set one single input image. However if I use AddInputData to add two images, the RequestData method in the
filter never gets called.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">Any pointers as to why?<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">Thanks<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">Eduardo<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">On Tue, May 14, 2013 at 4:08 PM, Eduardo Poyart <<a href="mailto:poyart@gmail.com" target="_blank">poyart@gmail.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">Hello,<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">I'm working with 3D images (volumes). I need to take two volumes and their respective transformations, and combine them into one single volume by cross-fading between them. <o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">That is: if you define a line between the two centroids, a point in the middle of this line will have 50% of the intensity of the first volume and 50% of the second volume. Other points will proportionally have
more of the first or of the second volume.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">What would be a recommended way to do it?<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">I'm trying to implement it as a vtkSimpleImageToImageFilter. I modified RequestData so I can get access to two input images. What would be a good way to find the extents of the output image?<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">Maybe there is a standard way to do that, but I haven't found it...<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">Thanks<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span style="color:#888888">Eduardo<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span style="color:#888888"><o:p> </o:p></span></p>
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