<html><head><meta http-equiv="Content-Type" content="text/html charset=iso-8859-1"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hello,<div><br></div><div>This filter may help to perform the multi-scale hessian analysis:</div><div><br></div><div><a href="http://www.itk.org/Doxygen/html/classitk_1_1MultiScaleHessianBasedMeasureImageFilter.html">http://www.itk.org/Doxygen/html/classitk_1_1MultiScaleHessianBasedMeasureImageFilter.html</a></div><div><br></div><div>Brad</div><div><br><div><div>On Aug 22, 2013, at 9:23 AM, Jesse Ross-Jones <<a href="mailto:jesse.rj@gmail.com">jesse.rj@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"><div dir="ltr"><div><div>Hi Matt,<br>Thanks again for your help.<br></div>I was able to implement the example from <a href="http://itk.org/ITKExamples/src/Filtering/ImageFeature/SegmentBloodVessels/Documentation.html" target="_blank">http://itk.org/ITKExamples/src/Filtering/ImageFeature/SegmentBloodVessels/Documentation.html</a> , which does a great job segmenting the vessels from a volume!<br>
<br>I found however that the larger vessels were left hollow. In order to fill in the larger vessels I ran the same filter again with a larger sigma and then sum the results at the two scales. I am wondering if this is a recommended way to fill in the vessels? I need the filled vessels in order to find the vessel centerlines in order to eventually calculate the vessel diameter. <br>
<br></div><div>Thank you <br></div><div>Jesse<br></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Tue, Aug 6, 2013 at 7:54 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 Jesse,<br>
<br>
This example may be useful [1].<br>
<br>
TubeTK [2] also has nice vessel extraction algorithms that results in<br>
an itk::VesselTubeSpatialObject [3] datastructure that has a radius at<br>
points along the vessel.<br>
<br>
Thanks,<br>
Matt<br>
<br>
[1] <a href="http://itk.org/ITKExamples/src/Filtering/ImageFeature/SegmentBloodVessels/Documentation.html" target="_blank">http://itk.org/ITKExamples/src/Filtering/ImageFeature/SegmentBloodVessels/Documentation.html</a><br>
[2] <a href="http://tubetk.org/" target="_blank">http://tubetk.org</a><br>
[3] <a href="http://www.itk.org/Doxygen/html/classitk_1_1VesselTubeSpatialObject.html" target="_blank">http://www.itk.org/Doxygen/html/classitk_1_1VesselTubeSpatialObject.html</a><br>
<div><div class="h5"><br>
On Tue, Aug 6, 2013 at 4:05 PM, Jesse Ross-Jones <<a href="mailto:jesse.rj@gmail.com">jesse.rj@gmail.com</a>> wrote:<br>
> Dear ITK Users,<br>
><br>
><br>
> I am would like to use the Hessian filter in ITK for two purposes, the first<br>
> is as a feature for vessel classification and the second is to estimate the<br>
> diameter of vessels after they have been segmented from the image.<br>
> (<a href="http://www.itk.org/pipermail/insight-users/2006-January/016325.html" target="_blank">http://www.itk.org/pipermail/insight-users/2006-January/016325.html</a>)<br>
><br>
> I am currently looking for examples for how to use this filter however I am<br>
> only finding examples from 2007. I am wondering if there are more up to date<br>
> examples?<br>
><br>
> Best Regards,<br>
> Jesse<br>
><br>
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