Unless the transform is invertible (and BSpline deformable transform isn't), you'll have to measure either the mismatch of the each registered images with baseline image - or - compare the deformation fields that result from the 2 BSpline transforms.<br>
<br>For the latter, you can look at the following paper :<br><br>----<br>McCane, B., Novins, K., Crannitch, D. and Galvin, B., On
Benchmarking Optical Flow, Computer Vision and Image Understanding,
84(1), pp 126-143, 2001 <br>
<br>Please see Section 5 titled Error Metrics in [1]. It provides 2
metrics to compare deformation fields. It also surveys other metrics
used to compare deformation fields in literature and illustrates their
shortcomings.<br>
<br>Their methods are openly available at <a href="http://sourceforge.net/projects/of-eval/files/" target="_blank">http://sourceforge.net/projects/of-eval/files/</a><br>----<br><br><br>--<br>karthik<br><br><div class="gmail_quote">
On Mon, Aug 3, 2009 at 10:23 AM, motes motes <span dir="ltr"><<a href="mailto:mort.motes@gmail.com">mort.motes@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Based on some of the examples from the itkSoftwareguide I have implemented a BSplineDeformable registration application. I deform the 3D brain scans :<br><br><a href="http://public.kitware.com/pub/itk/Data/BrainWeb/BrainPart1.tgz" target="_blank">http://public.kitware.com/pub/itk/Data/BrainWeb/BrainPart1.tgz</a><br>
<br>and use those as the moving image input to the registration method. One way to measure the quality of the registration is to compute the difference images. But are there some more strict way to compute a measure and then compare that measure with another implementation of the BSplineDeformable registration application?<br>
<br>I have read that some use intersections of the overlap but any other ideas or examples are most welcome!<br>
<br>_____________________________________<br>
Powered by <a href="http://www.kitware.com" target="_blank">www.kitware.com</a><br>
<br>
Visit other Kitware open-source projects at<br>
<a href="http://www.kitware.com/opensource/opensource.html" target="_blank">http://www.kitware.com/opensource/opensource.html</a><br>
<br>
Please keep messages on-topic and check the ITK FAQ at: <a href="http://www.itk.org/Wiki/ITK_FAQ" target="_blank">http://www.itk.org/Wiki/ITK_FAQ</a><br>
<br>
Follow this link to subscribe/unsubscribe:<br>
<a href="http://www.itk.org/mailman/listinfo/insight-users" target="_blank">http://www.itk.org/mailman/listinfo/insight-users</a><br>
<br></blockquote></div><br><br clear="all"><br>-- <br>Karthik Krishnan<br>R&D Engineer,<br>Kitware Inc.<br>Ph: 518 881 4919<br>Fax: 518 371 4573<br>