<div dir="ltr">Hi<div><br></div><div style>I see. It seems that <span style="font-size:13px;font-family:arial,sans-serif"> </span><span style="font-size:9.5pt;font-family:Consolas">itk::BinaryThinningImageFilter</span><span style="font-size:13px;font-family:arial,sans-serif">. does not have any methoid for selecting the connectivity of the final skeleton.</span></div>
<div style><font face="arial, sans-serif">You can try to change the fikter yourself and use 8 connectivity instead of 4 connectivity. But I dont know if this will be easy or not.</font></div><div style><font face="arial, sans-serif"><br>
</font></div><div style><font face="arial, sans-serif">Alternatively, you can try a coupe of methods published in the insight journal (search for skeleton or thinning) and see if they generate 8-connected skeletons</font></div>
<div style><font face="arial, sans-serif"><br></font></div><div style><font face="arial, sans-serif">best regards</font></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Fri, Mar 1, 2013 at 7:09 AM, Vardhan, Vishnu <span dir="ltr"><<a href="mailto:vishnu.vardhan@philips.com" target="_blank">vishnu.vardhan@philips.com</a>></span> wrote:<br>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Hi,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> I am working on 2D images. I need skeletons that are maximally thin.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">This is the kind of skeleton I want to obtain and also similar to the one obtained from MATLAB.<u></u><u></u></span></p>
<p class="MsoNormal"><img width="184" height="124" src="cid:image003.jpg@01CE1671.1E23C7E0"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">However, when I implemented it using ITK, the result is similar to the following:<u></u><u></u></span></p>
<p class="MsoNormal"><img width="184" height="116" src="cid:image004.jpg@01CE1671.1E23C7E0"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">I need a method to acquire a skeleton minimally connected( as in first figure), that is devoid of ‘L’ shapes(as present in second figure)<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Sergio Vera [mailto:<a href="mailto:sergio.vera@alma3d.com" target="_blank">sergio.vera@alma3d.com</a>]
<br>
<b>Sent:</b> 28 February 2013 13:31<br>
<b>To:</b> Vardhan, Vishnu<br>
<b>Cc:</b> <a href="mailto:insight-users@itk.org" target="_blank">insight-users@itk.org</a><br>
<b>Subject:</b> Re: [Insight-users] skeleton extraction<u></u><u></u></span></p><div><div class="h5">
<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">What kind of images are trying to skeletonize? (3D-2D, what kind of skeletons do you need...)<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">ITK does not have many methods for skeletonizartion. There are a bunch of methods in the insight journal but it pretty much depends on the object and what do you expect in return.<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Sergio<u></u><u></u></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><u></u> <u></u></p>
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<p class="MsoNormal">On Wed, Feb 27, 2013 at 10:46 AM, Vardhan, Vishnu <<a href="mailto:vishnu.vardhan@philips.com" target="_blank">vishnu.vardhan@philips.com</a>> wrote:<u></u><u></u></p>
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<p class="MsoNormal">Hi,<u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none">
I have extracted skeleton of an image using ITK using <span style="font-size:9.5pt;font-family:Consolas">
itk::BinaryThinningImageFilter</span>. I have tried the same with MATLAB using the function
<i>bwmorph(im,’skel’,Inf)<b> </b></i>and I find the results different. Actually, I find the result from MATLAB better. Is there any other way to obtain skeleton of an image using ITK?<u></u><u></u></p>
<p class="MsoNormal">Thanks in advance.<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">-- <br>
Sergio Vera<br>
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Alma IT Systems<br>
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T. <a href="tel:%28%2B34%29%20932%20380%20592" value="+34932380592" target="_blank">(+34) 932 380 592</a><br>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br>Sergio Vera<br><br> Alma IT Systems<br> C/ Vilana, 4B, 4º 1ª<br> 08022 Barcelona<br> T. (+34) 932 380 592<br> <a href="http://www.alma3d.com">www.alma3d.com</a>
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