<div><br></div>Hi Anja,<div><br></div><div>This is explained in detail in the ITK Software Guide</div><div><br></div><div> <a href="http://www.itk.org/ItkSoftwareGuide.df">http://www.itk.org/ItkSoftwareGuide.df</a></div>
<div><br></div><div>in Chapter 8 : "Image Registration",</div><div>specifically in Section 8.3 "Features of the Registration Framework",</div><div>and </div><div><br></div><div> Section 8.3.1. "Direction of the Transform Mapping" </div>
<div> in pdf-pages 359-360.</div><div><br></div><div><br></div><div>Please read this section carefully and let us know if you </div><div>still have any questions.</div><div><br></div><div><br></div><div> Thanks</div>
<div><br></div><div><br></div><div> Luis</div><div><br></div><div><br></div><div><br>---------------------<br><div class="gmail_quote">On Mon, Aug 17, 2009 at 6:34 AM, Anja Ende <span dir="ltr"><<a href="mailto:anja.ende@googlemail.com">anja.ende@googlemail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Hello everyone,<br>
<br>
I was going through the ITK software guide and came across this bit:<br>
<br>
"If we have used the Transform that maps coordinates from the moving<br>
image physical space<br>
into the fixed image physical space, then the resampling process could<br>
not guarantee that every<br>
pixel in the grid of the fixed image was going to receive one and only<br>
one value".<br>
<br>
I am having a bit of problem understanding why this would be the case.<br>
So, we have a transform (the inverse of the transform from<br>
fixed->moving) that will map each point in the moving image to each<br>
physical point in the fixed image. I am not sure how the unambiguity<br>
of the fixed image pixel not receiving one and only one value arises.<br>
<br>
Would anyone be kind enough to explain this a bit?<br>
<br>
many thanks,<br>
<br>
Anja<br>
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