[Insight-users] How to flood fill a big hole using a seed point

[Luis Ibanez]

Hi Fucang,

Probably the easiest way to proceed is
by using the region growing filter:

   itk::ConnectedThresholdImageFilter

This is described in the Software Guide

http://www.itk.org/ItkSoftwareGuide.pdf

Section 8.1.1, pdf-page 245.

This filter fills out a region starting from
a seed point, subject to the condition that
pixels in the region must have intensities
inside a range provided by the user.

You can put multiple seed by using the method:

       AddSeed()

In this way you can add, a seed per hole to
fill, and make a single execution of the
filter.

This will be much more efficient than
morphological operators.

Please let us know if you find any problems,


   Thanks

     Luis


--------------------------------------
Fucang Jia wrote:
> Hi everyone, hi Luis,
> 
> The images I segmented often have very big hole which is another object 
> inside the organ in fact. I use morphology to close it, but only close 
> the smaller holes. I have noticed that there needs a function to use 
> floodfill function. Is it possible to use a seed point to close the 
> other object inside?  Suppose that there are two circle which has the 
> same center, the region between these two circle are segmented, but I 
> want to calssify the internal region inside the smaller circle also to 
> be the segmented object. BTW, There are often several segmented objects 
> in the segmented image, not only one.
> 
> Thank you very much!
> 
> Fucang
> 
> 
> 
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