[Insight-users] Extract Image Filter

[Miller, James V (Research)]

I will go with a yes.

> -----Original Message-----
> From: Luis Ibanez [mailto:luis.ibanez@kitware.com]
> Sent: Tuesday, February 04, 2003 2:11 PM
> To: Miller, James V (Research)
> Cc: 'Puja Malik'; itk newsgroup
> Subject: Re: [Insight-users] Extract Image Filter
> 
> 
> Jim,
> 
> Well, may this is the problem....
> 
> fltkImageViewer uses internally the GLSliceViewer
> which in the SetInputImage() method it asks for
> 
>        GetLargestPossibleRegion()
> 
> Should be change it for "GetRequestedRegion()"
> or "GetBufferedRegion()" ?
> 
> 
> Luis
> 
> 
> 
> --------------------------------------------
> 
> 
> Miller, James V (Research) wrote:
> > Luis,
> > 
> >  
> > 
> > Does this mean there is an issue with the FLTK image viewer?  Is it 
> > triggering off the wrong Region?
> > 
> >  
> > 
> > Jim
> > 
> >     -----Original Message-----
> >     *From:* Puja Malik [mailto:puja.malik@MEMcenter.unibe.ch]
> >     *Sent:* Tuesday, February 04, 2003 11:27 AM
> >     *To:* itk newsgroup
> >     *Subject:* [Insight-users] Extract Image Filter
> > 
> >     Hi Luis,
> > 
> >     I've managed to fix my problem in the 
> ExtractImageFilter.  I do have
> >     one concern though.  I cannot directly use the image 
> object from the
> >     output of the filter, and view it in the fltk image 
> filter.  If I do
> >     this, the images intensity range is altered, and the 
> first slice is
> >     distorted.  I must first write the output of the filter ( image
> >     object ) to a file, read it back into a new image 
> object and then
> >     view it.  This way, I see a correctly extracted image.  
> This is very
> >     strange.  It would be convenient if the output of the 
> filter could
> >     be used directly.  Please see my code below, including the extra
> >     steps I needed to perform to get the desired results.
> > 
> >     void ExtractImageRegion(ImageType::Pointer imIN, 
> ImageType::SizeType
> >     regSize,
> >                                                        
> ImageType::IndexType
> >     regIndex)
> >     {
> > 
> >      typedef itk::ExtractImageFilter< ImageType, ImageType 
> > FilterType;
> >      FilterType::Pointer filter = FilterType::New();
> >      ImageType::Pointer imOUT;
> > 
> >      ImageType::RegionType region;
> >      region.SetSize(regSize);
> >      region.SetIndex(regIndex);
> > 
> >      filter->SetExtractionRegion(region);
> >      filter->SetInput(imIN);
> >      filter->Update();
> >      
> >     // View(filter->GetOutput(), "region");  <-- doing this directly
> >     shows a distorted image
> > 
> >     //the following is the extra steps needed to view a 
> correct image
> >     //View, Read, WriteMetaFile are my own functions 
> written using itk
> >     classes.
> >         imOUT = filter->GetOutput();
> >         imOUT->DisconnectPipeline();
> >      
> >         ImageType::Pointer im;
> >         
> WriteMetaFile("/home/encephalon/puja/testRegion.mhd", imOUT);
> >          im=Read("/home/encephalon/puja/testRegion.mhd");
> >          View(im, "region");
> > 
> >     }
> > 
> >     Thanks for your help,
> >     Puja
> > 
> > -- 
> > ---------------------------------------
> > Puja Malik
> > Surgical Instruments Group
> > MEM Research Center for Orthopaedic Surgery
> > Institute for Surgical Technology and Biomechanics 
> > University of Bern
> > Murtenstrasse 35, P.O. Box 8354
> > 3010 Bern, Switzerland
> > Phone: +41-31-632-8730
> > Fax: +41-31-632-4951
> > Email: Puja.Malik@MEMcenter.unibe.ch
> > http://www.MEMcenter.unibe.ch
> > ---------------------------------------
> > 
> >       
> > 
> 
> 
> 
> 
>