<div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Hi Vijaya,</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Fixed parameters are not optimized when a transform is used in image registration. Center of rotation is usually the fixedparameter. That is the case with <a href="https://itk.org/Doxygen/html/classitk_1_1Euler3DTransform.html">Euler</a>, <a href="https://itk.org/Doxygen/html/classitk_1_1QuaternionRigidTransform.html">Quat</a> and <a href="https://itk.org/Doxygen/html/classitk_1_1VersorRigid3DTransform.html">Versor</a> rigid 3D transforms. More transform types are listed <a href="https://itk.org/Doxygen/html/group__ITKTransform.html">here</a>. This <a href="https://itk.org/ITKExamples/src/Filtering/ImageGrid/ResampleAnImage/Documentation.html">example</a>, and this <a href="https://itk.org/Wiki/ITK/Examples/SimpleOperations/TranslationTransform">example</a> might help you about how to set parameters and use a transform.</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Regards,</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Dženan</div></div></div><br><div class="gmail_quote"><div dir="ltr">On Fri, Sep 7, 2018 at 7:30 AM Vijaya Ghorpade via Insight-users <<a href="mailto:insight-users@itk.org">insight-users@itk.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><font color="" size="2" face="Helvetica Neue"><font face="Arial, Helvetica, sans-serif">Hi</font>
<div><font face="Arial, Helvetica, sans-serif">Before asking this question I searched the whole archive. I am new here.  I would like to resample an MRI image after applying 3D rigid transform (Rotation followed by translation). I found euler3dtransform and quaternion3d. The documentation is not suffice to see how to use it completely. What are parameters and fixed parameters. How to give suppose three angles a, b, c and 3 transtalations x ,y, z to these functions. Please help me. </font></div>

<div><font face="Arial, Helvetica, sans-serif">Thank you so much in advance,</font></div>
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