[Insight-users] 3D and 2D image for VED filter

[Ghassan Hamarneh]

On 16-Mar-09, at 1:59 PM, Wen Shi wrote:

> Hi Karthik,
> Thanks for your reply.
> But I am not familiar with medical image.
> So as you said, I need to gather at least four slices images then  
> combine them into one image, then input the
> image into the ITK project. Is that what I need to do?


You should use ALL the 2D slices to make up the 3D image.
See: Reading DICOM and Other One-Slice-Per-File Data Formats
here: http://www.itk.org/Wiki/MetaIO/Documentation

/Ghassan


> Thanks a lot
>
> Wen Shi
>
>
> ----- Original Message -----
> From: "Karthik Krishnan" <karthik.krishnan at kitware.com>
> To: "Wen Shi" <wsa18 at sfu.ca>
> Cc: "insight-users" <insight-users at itk.org>
> Sent: Friday, March 13, 2009 5:39:47 PM GMT -08:00 US/Canada Pacific
> Subject: Re: [Insight-users] 3D and 2D image for VED filter
>
> You need at least 4 slices for the recursive gaussian filter to run.  
> Its used to compute the hessians. Your 3D image is less than 4  
> slices thick.
>
>
> On Fri, Mar 13, 2009 at 6:56 PM, Wen Shi < wsa18 at sfu.ca > wrote:
>
>
> Hi Guys,
>
> When I was using VED filter processing some vessel image,
> I got the error as :
> RecursiveGaussianfilter requires at least 4 pixels along axis 2.
>
> So I guess the problem is the image I tried to process is a 2D image.
> But to my personal intuition it's a 3D one.
> How to decide the image is 3D or 2D?(maybe this seems pretty stupid  
> and ridiculous but sorry for that).
>
> Thanks a lot
>
> Wen SHi
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> -- 
> Karthik Krishnan
> R&D Engineer,
> Kitware Inc.
> Ph: 518 371 3971 x119
> Fax: 518 371 3971
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