[ITK] [ITK-users] SimpleITK | BinaryMorphologicalClosing, filter noise

[Bradley Lowekamp]

Hello,

This is likely due to how you are defining a binary image.

SimpleITK has the established convention that for binary images/ masks, that 0 are the background and 1 is the foreground [1]. This is reflected in the default parameters of many filters, including the binary morphological filters.

Most likely you need to check the value of the ForegroundValue.

HTH,
Brad

[1] http://www.itk.org/SimpleITKDoxygen/html/ConventionsPage.html

On May 7, 2015, at 11:10 AM, Wookyung An <aqualiquid1 at gmail.com> wrote:

> Hi ITK users, 
> 
> I am pretty fresh of SimpleItk. I tried to use BinaryMorphologicalClosing to filter some noises that are smaller than the structuring element. I noticed that the default kernel type is "ball" which is ok. However, after I applied the function, there is no change at all.
> For example, I tried to filter which smaller than 10(radius).
> after_morp = SimpleITK.BinaryMorphologicalClosing(binarized_img, 10); 
> 
> 
> 
> But I found that nothing changed at all. Do you have any idea what was the problem?
> 
> 
> 
> Thank you in advance.
> 
> 
> _____________________________________
> Powered by www.kitware.com
> 
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
> 
> Kitware offers ITK Training Courses, for more information visit:
> http://www.kitware.com/products/protraining.php
> 
> Please keep messages on-topic and check the ITK FAQ at:
> http://www.itk.org/Wiki/ITK_FAQ
> 
> Follow this link to subscribe/unsubscribe:
> http://public.kitware.com/mailman/listinfo/insight-users

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://public.kitware.com/pipermail/community/attachments/20150507/561bae7d/attachment-0001.html>
-------------- next part --------------
_____________________________________
Powered by www.kitware.com

Visit other Kitware open-source projects at
http://www.kitware.com/opensource/opensource.html

Kitware offers ITK Training Courses, for more information visit:
http://www.kitware.com/products/protraining.php

Please keep messages on-topic and check the ITK FAQ at:
http://www.itk.org/Wiki/ITK_FAQ

Follow this link to subscribe/unsubscribe:
http://public.kitware.com/mailman/listinfo/insight-users