<div class="gmail_quote"><br><br>Hey Ella,<div> I think you are confusing things a little and confusing two different examples. The GAC filter needs 1 distance map and 1 feature image.</div><div>In the example, the distance map is the output of the Fast Marching (FM) filter and it is computed from a set of seed points. On the other hand the feature image is computed by the sigmoid filter.</div>
<div>As I understood your question, you want to use your custom level set instead of the one constructed from seeds.</div><div>So in your case you should create a binary mask, pass it to the Danielsson filter (DF) and the use the output of the DF to the GAC filter. I think your mistake is to use the DF as input for the FM filter.</div>
<div>So for this task you don't need the FM filter at all.</div><div>I hope it is clearer now.</div><div>Best regards,</div><div> Juan</div><div><div></div><div class="h5"><div><br><div class="gmail_quote">
On Mon, Feb 14, 2011 at 9:11 PM, Ella Maria Kadas <span dir="ltr"><<a href="mailto:ella_kadas@yahoo.com" target="_blank">ella_kadas@yahoo.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><table cellspacing="0" cellpadding="0" border="0"><tbody><tr><td valign="top" style="font:inherit">Hi <br>I am sorry to bother u again, but i am really stuck with Level set Filter. I implemented the geodesic active contour, and also chan-vese method using level set method in java few moth ago, but i can't figure out the why using the same steps as in the Itk user guide, i dont get any results.<br>
So i want to ask u again. In the user guide for the first example for FastMarchingFilter, the input of the fastMarching is he output of the sigmoid filter. Should this be a binary image?. <br> And in the geodesicactivecontourFilter. In the chart where the pipeline is shown the Fast Marching Filter gets the seeds and the Distance map (which would make sense to me because i use to do it the same way using the narrow band method). So i used the SignedDanielssonDistanceMapFilter to generate the map, from the binary image where all is black
only the seed point is white, and then i put this map and the seed point in the FastMarchingFilter.<br>Then the GeosedicActiveContourFilter gets the fastMarching output and the sigmoidFilter's output, but i still et very strange results.<br>
If u have any suggestions pls:),<br>Thanks,<br>Ella<br><br>--- Juan Cardelino <i><<a href="mailto:juan.cardelino@gmail.com" target="_blank">juan.cardelino@gmail.com</a>></i> schrieb am <b>Fr, 11.2.2011:<br></b><blockquote style="border-left:2px solid rgb(16, 16, 255);margin-left:5px;padding-left:5px">
<b><br>Von: Juan Cardelino <<a href="mailto:juan.cardelino@gmail.com" target="_blank">juan.cardelino@gmail.com</a>><div><br>Betreff: Re: [Insight-users] Help with GeodesicActiveContourImageFilter --> Modification to example code does not seem to work<br>
An: <br></div>CC: <a href="mailto:insight-users@itk.org" target="_blank">insight-users@itk.org</a><br>Datum: Freitag, 11. Februar, 2011 00:10 Uhr<br><br></b><div><div></div><div><div><b>I'm using it intensively without any problem. Could you give us more details about what you are exactly doing? An example
image would also help.</b><div>
<b>Are you trying to do the same as Vimal? i.e. using your own generated level set as initial condition?<br></b><div><b>Regards,</b></div><div><b> Juan<br></b><div><div><b><br></b><div><b>On Thu, Feb 10, 2011 at 7:55 PM, Ella Maria Kadas <span dir="ltr"><<a rel="nofollow" href="http://mc/compose?to=ella_kadas@yahoo.com" target="_blank">ella_kadas@yahoo.com</a>></span> wrote:<br>
</b><blockquote style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204, 204, 204);padding-left:1ex"><table border="0" cellpadding="0" cellspacing="0"><tbody><tr><td style="font:inherit" valign="top"><br><br>Hi Vimal,<br>
<br>Did u manage to use the GeodesicAcctiveContourImageFilter in the end?<br>I am facing a similar problem. I can see the output of all the filters, except the output of the FastMarchingFilter which is just a black image. <br>
I would really appreciate any suggestions about why this happens. I tried to look at older posts aswell, but there was no further information or solution to this problem.<br>Thanks a lot,<br>Ella<br></td></tr></tbody></table>
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