No, AFAIK it is not missing. Edge linking is performed using hysteresis thresholding in this filter. <br><br>Not sure if this is comment in the doxygen is a relic. There have been variants of canny in literature that use other methods of performing the edge linking.<br>
<br><div class="gmail_quote">On Thu, Mar 12, 2009 at 12:26 PM, Atwood, Robert C <span dir="ltr"><<a href="mailto:r.atwood@imperial.ac.uk">r.atwood@imperial.ac.uk</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<br>
Apropos of this thread,<br>
<br>
Is the CannyEdgeDetectionImageFilter still lacking the linking phase as described in the doxygen?<br>
<br>
<a href="http://www.itk.org/Doxygen/html/classitk_1_1CannyEdgeDetectionImageFilter.html" target="_blank">http://www.itk.org/Doxygen/html/classitk_1_1CannyEdgeDetectionImageFilter.html</a><br>
(quote)<br>
Todo:<br>
Edge-linking will be added when an itk connected component labeling algorithm is available.<br>
(end quote)<br>
Thanks<br>
Robert<br>
<br>
<br>
> -----Original Message-----<br>
> From: <a href="mailto:insight-users-bounces@itk.org">insight-users-bounces@itk.org</a><br>
> [mailto:<a href="mailto:insight-users-bounces@itk.org">insight-users-bounces@itk.org</a>] On Behalf Of Wen Shi<br>
> Sent: 11 March 2009 04:00<br>
> To: insight-users<br>
> Subject: [Insight-users] canny edge detection filter<br>
><br>
> Hi Guys,<br>
><br>
> I am interested in the "canny edge detection filter".<br>
> I am just wondering what's the methodology this filter<br>
> applies in order to detect/segment the edges/contours of the<br>
> image. I read the software guide but there is no detail description.<br>
> Can some one help me with that?<br>
><br>
> Thanks a lot<br>
><br>
> Wen SHi<br>
><br>
> SFU<br>
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</blockquote></div><br><br clear="all"><br>-- <br>Karthik Krishnan<br>R&D Engineer,<br>Kitware Inc.<br>Ph: 518 371 3971 x119<br>Fax: 518 371 3971<br>