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<br>Hi,<br> I am keen on using Vercauteren's Fast symmetric demons registration (http://hdl.handle.net/1926/510) . Even though I have worked on image registration, I am very new to the demons method, to ITK as well as to C++. Can someone guide me with regard to these 2 issues:<br>a) When I registered 2 3D-CT images of phantom, I got this response. The output image is not that good and I would need to tweak with some of the parameters. Can you let me know which ones to tweak.<br><br>C:\Ganesh\DiffeomorphicDemons\Build\Debug>DemonsRegistration.exe -f S2_SE3.mha -m S4_SE3.mha -o Demon-output-S2SE4fS4SE4m.mha<br><br>Starting demons registration with the following arguments:<br>Arguments structure:<br> Fixed image file: S2_SE3.mha<br> Moving image file: S4_SE3.mha<br> Input field file:<br> Input transform file:<br> Output image file: Demon-output-S2SE4fS4SE4m.mha<br> Output field file:<br> True field file:<br> Number of multiresolution levels: 3<br> Number of demons iterations: [ 15 10 5 ]<br> Deformation field sigma: 1.5<br> Update field sigma: 0<br> Maximum update step length: 2<br> Update rule: exponentialize and compose (Diffeomorphic)<br> Type of gradient: symmetrized (ESM for diffeomorphic and compositive)<br> Use histogram matching: false<br> Algorithm verbosity (debug level): 0<br><br><br>b) Is there a way to select control points in the 2 3D images?<br><br>Thanks,<br>Ganesh<br><br><br><br> <br /><hr />Hotmail: Trusted email with Microsoft’s powerful SPAM protection. <a href='http://clk.atdmt.com/GBL/go/201469226/direct/01/' target='_new'>Sign up now.</a></body>
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