<div dir="ltr">Hi Andras,<br><br>The HDF5 transform format [1] can support Composite [2] transforms.<br><br>HTH,<br>Matt<br><br>[1] <a href="http://www.itk.org/Doxygen/html/classitk_1_1HDF5TransformIOTemplate.html">http://www.itk.org/Doxygen/html/classitk_1_1HDF5TransformIOTemplate.html</a><br>
<br>[2] <a href="http://www.itk.org/Doxygen/html/classitk_1_1CompositeTransform.html">http://www.itk.org/Doxygen/html/classitk_1_1CompositeTransform.html</a><br></div><div class="gmail_extra"><br><br><div class="gmail_quote">
On Wed, Mar 12, 2014 at 12:22 PM, Andras Lasso <span dir="ltr"><<a href="mailto:lasso@queensu.ca" target="_blank">lasso@queensu.ca</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">






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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Hi all,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">We are improving the non-linear transform support in 3D Slicer and looking for a file format that can store a list of transforms. The difficulty is that we
 don’t want to lose information when writing the transforms to file, groups of transforms may be inverted in the list, for example:<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">T1 * inv(T2) * inv(T3 * inv(T4 * T5 * T6)) * T7<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Is there a way to save such a transformation chain into an ITK transform file? (or there are any plans or interest in ITK for supporting this in the future?)<span class="HOEnZb"><font color="#888888"><u></u><u></u></font></span></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Andras<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
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