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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>This is simply an affine transform itk::AffineTransform. <o:p></o:p></span></p>
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color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>-Jinzhong<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
insight-users-bounces@itk.org [mailto:insight-users-bounces@itk.org] <b>On
Behalf Of </b>John D<br>
<b>Sent:</b> Friday, September 04, 2009 10:57 AM<br>
<b>To:</b> Ramón Casero Cañas<br>
<b>Cc:</b> Insight Users Mailing List<br>
<b>Subject:</b> Re: [Insight-users] Translation, Rotation and Scaling<o:p></o:p></span></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'>Hi Ramon,<br>
<br>
Thanks for your reply. I see that the Similarity2DTransform has an
uniform scaling in X and Y. In my application, the x and y scaling could be
different. How can that be handled ?<br>
<br>
Thanks,<br>
John<br>
<br>
<o:p></o:p></p>
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<p class=MsoNormal>2009/9/3 Ramón Casero Cañas <<a
href="mailto:ramon.casero@comlab.ox.ac.uk">ramon.casero@comlab.ox.ac.uk</a>><o:p></o:p></p>
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<p class=MsoNormal>John D wrote:<o:p></o:p></p>
<p class=MsoNormal>Hi all,<br>
<br>
I am working on an application of registration of 2D images where I want<br>
translation, rotation and scaling (but no shear). The affine transformation<br>
has the added degree of freedom for the shear that I want to avoid. Does ITK<br>
have a transform that uses only translation, rotation and scaling ?<o:p></o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><o:p> </o:p></p>
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<p class=MsoNormal>Hi John,<br>
<br>
Yes, it is known as a similarity transform. See class Similarity2DTransform,
documented in sec. 8.8.9 (p. 400) of the ITK User Guide, and in the doxygen
documentation<br>
<br>
<a href="http://www.itk.org/Doxygen/html/classitk_1_1Similarity2DTransform.html"
target="_blank">http://www.itk.org/Doxygen/html/classitk_1_1Similarity2DTransform.html</a><br>
<br>
<br>
Best regards,<br>
<br>
Ramon.<br>
<br>
-- <br>
Ramón Casero Cañas, DPhil<br>
<br>
Computational Biology, Computing Laboratory<br>
University of Oxford<br>
Wolfson Building, Parks Rd<br>
Oxford OX1 3QD<br>
<br>
tlf +44 (0) 1865 610807<br>
web <a href="http://web.comlab.ox.ac.uk/people/Ramon.CaseroCanas"
target="_blank">http://web.comlab.ox.ac.uk/people/Ramon.CaseroCanas</a><br>
photos <a href="http://www.flickr.com/photos/rcasero/" target="_blank">http://www.flickr.com/photos/rcasero/</a><o:p></o:p></p>
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