try to apply VesselWallHoughTransformFilter and measurement2D slice by slice

[wuzhuobin]

i all,

Thank you very much for your help!
Using SliceBySliceImageFilter with the BinaryFillholeImageFilter did the 

job. And thanks for the explanation, Gaëtan.

Tiago

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De: Gaëtan Lehmann [email protected]
Para: Tiago Brizolara da Rosa [email protected]
Cc: ITK Users [email protected]; Bill Lorensen [email protected]
Enviadas: Terça-feira, 26 de Abril de 2011 4:41:11
Assunto: Re: [Insight-users] Fast access to slices of 3D image + problem with
BinaryFillholeImageFilter

Hi,

This filter should work fine in N dimensions. Are you sure there is a real
problem with the filter?
The fill holes transform is very sensible to any open pixel. In 3D, it may be
difficult to see if a hole is open, but the algorithm won't miss it.

Using it in 2D in a 3D image is a perfectly valid usage, especially if the
spacing in your image is not uniform - I'm almost always using that filter that
way.
SliceBySliceImageFilter makes easy to apply a 2D filter in a 3D image.

Regards,

Gaëtan

Le 26 avr. 11 à 05:08, Bill Lorensen a écrit :

In the example, did you change:
const int dim = 2;
to
const int dim = 3;

On Mon, Apr 25, 2011 at 9:13 PM, Tiago Brizolara da Rosa [email protected]
wrote:
Hi all,

I would like to know if there is a fast way of manipulating a slice of a 3D
volume. Specifically, I want to apply a filter to individual slices of a volume.
The only way I know for doing that is by, for each desired slice: applying a
ExtractImageFilter and then applying the filter I want to use to the slice image
generated.
Is there a way for jumping this step (ExtractImageFilter)? For example, if I
wanted to manipulate the pixels of my desired slices, I should use the
ImageSliceIteratorWithIndex, so I wouldn´t need the ExtractImageFilter. But what
I want is to apply a filter to each slice. Is it posible to do this without
having to generate a new image for each one with ExtractImageFilter?

Now the problem with BinaryFillholeImageFilter. In fact, the reason for the
above question comes from a workaround to the problem with this filter.
I tried to use BinaryFillholeImageFilter in exactly the same way as in the
example file binary_fill_hole.cxx, but without success. Then I noticed that it
works fine if my image is two-dimensional (I was trying to use in a 3D image
read from a DICOM series). It was not supposed to work in a 3D image?
I am using ITK 3.8.0 in Windows 7 and downloaded the code for the morphology
filters and samples from the Insight Journal´s article
Label object representation and manipulation with ITK
(http://www.insight-journal.org/browse/publication/176).

Well, as a workaround, I want to apply BinaryFillholeImageFilter to all the
individual slices of the volume. I think that generating a 2D image for each one
would be very painfull. This is the reason for the first question of this
e-mail.