<div dir="ltr">Just thinking out aloud, wouldn't it be ok to get a Jacobian of the GVF image? And then do an eigen value decomposition on the Jacobian rather than the Hessian. Jacobian matrix isn't symmetric though.<div><br></div><div>Cheers,</div><div>Sid</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Oct 2, 2015 at 3:15 PM, Matheus Viana <span dir="ltr"><<a href="mailto:vianamp@gmail.com" target="_blank">vianamp@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">You can check my solution here:<div><br></div><div><a href="https://github.com/vianamp/MitoGraph" target="_blank">https://github.com/vianamp/MitoGraph</a><br></div><div><br></div><div>The piece of code you want to look at is the function: <font face="monospace, monospace">GetHessianEigenvaluesDiscrete</font></div><div><br></div></div><div class="gmail_extra"><br clear="all"><div><div><div><div><font color="#555555" face="Helvetica, Arial, sans-serif"><span style="line-height:16px"><b>Matheus Viana</b></span></font></div><div><font color="#555555" face="Helvetica, Arial, sans-serif"><span style="line-height:16px"><b>Postdoctoral Research Employee</b></span></font></div><div><b><span style="color:rgb(85,85,85);line-height:16px;font-family:Helvetica,Arial,sans-serif;font-size:13px">Developmental and Cell Biology</span></b></div><div><font color="#555555" face="Helvetica, Arial, sans-serif"><span style="line-height:16px"><b>University of California Irvine</b></span></font></div><div><font color="#555555" face="Helvetica, Arial, sans-serif"><span style="line-height:16px"><b><br></b></span></font><b><i><br></i></b></div></div></div></div>
<br><div class="gmail_quote"><div><div class="h5">2015-10-02 4:05 GMT-03:00 Jakob Weiss <span dir="ltr"><<a href="mailto:weissj@in.tum.de" target="_blank">weissj@in.tum.de</a>></span>:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5">Hello!<br>
<br>
Did you end up finding a solution for this problem? In order to evaluate the<br>
GVF approach to Vesselness I am looking for the exact same solution...<br>
<br>
Cheers,<br>
J<br>
<br>
<br>
<br>
--<br>
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