[Insight-users] vtk-itk pipeline : Island removal.
Luis Ibanez
luis.ibanez at kitware.com
Fri Dec 5 10:48:55 EST 2008
Hi Raghu,
Thanks for the additional details.
Unfortunately, as you pointed out, the Voting Filters
in ITK are implemented only for binary images.
You could imagine extending the same algorithm to multi-component
images (e.g. RGB) by defining a distance in that space. (e.g. a
distance between the values of two RGB triplets.).
Another option that you may want to explore is to use a
MedianImageFilter on each one of the RGB components of
your image. The Median filter is usually good at removing
salt-and-pepper noise, and when applied iteratively it can
remove structures of larger size.
A couple of questions:
1) What is the size (in pixels) of the islands
that you want to remove ?
2) Is your RGB image the result of running a
segmentation method ?
Please let us know,
Thanks
Luis
--------------------
RAGHU PRASAD wrote:
> Respected Sir,
>
> Thanks for the reply.Sir I have a 3D volume rendered anatomical
> structure that contains few residues/debris(unwanted structures ) which
> has to be removed or filtered out every time the volume rendered image
> is generated does ITK /VTK provide 3D island removal filters to remove
> 3d structures from the input volume based image on their size,if so
> please let me know under which section I can find 3D island removal
> filter floaters in VTK/ITK.Does Itk has the facility to handle 3D color
> Images .My Image is a 3D RGB Image with 512 x 512 Pixels.I tried voting
> binary hole filling filter but it supports only binary images .Is there
> any option to remove the salt and pepper effect in the 3D RGB images
> with the help of voting filters.Please reply.
>
>
>
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>
> Warm Regards
>
> Raghu Prasad.M.S
>
> Manipal University,Manipal
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