<div dir="ltr"><div><div><div>Hi Matt,<br><br></div>Thank you for your response. Would you please let me know how can I measure the bias of Fourier spectrum?<br><br></div>Thanks,<br></div>Samaneh<br><div><div><pre><br></pre>
</div></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Tue, Aug 20, 2013 at 2:36 PM, Matt McCormick <span dir="ltr"><<a href="mailto:matt.mccormick@kitware.com" target="_blank">matt.mccormick@kitware.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Samaneh,<br>
<br>
Here is an example that shows how to compute the spectral density of a 3D image:<br>
<br>
<a href="http://itk.org/ITKExamples/src/Filtering/FFT/ComputeImageSpectralDensity/Documentation.html" target="_blank">http://itk.org/ITKExamples/src/Filtering/FFT/ComputeImageSpectralDensity/Documentation.html</a><br>
<br>
HTH,<br>
Matt<br>
<div><div class="h5"><br>
On Wed, Aug 14, 2013 at 4:25 PM, Samaneh Kazemi<br>
<<a href="mailto:samaneh.kazemi@gmail.com">samaneh.kazemi@gmail.com</a>> wrote:<br>
> Dear ITK users,<br>
><br>
> I want to measure the smoothness of one curve. Mr. Luis Ibanez gave an idea<br>
> that the smoothness of the curve can be evaluated by analyzing its spectrum<br>
> in the Fourier domain. So, I want to use Fourier descriptors of a volume (3D<br>
> points) to obtain magnitude of each point. I only found the example<br>
> FourierDescriptors1.cxx, under: "Insight/Examples/Numerics " but I am<br>
> looking for 3D Fourier Descriptors acting on voxels. Would you please send<br>
> me an example of 3D Fourier Descriptors code.<br>
><br>
> Thanks for your time and help.<br>
> Samaneh<br>
><br>
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