[Insight-users] simultaneous mapping of two regions in the 1st image to the 2nd image

[Ming Chao]

Hi Luis,
My previous question about adding more subgreions onto the new image is
quite trivial. sorry for the noise.
Ming


On 1/13/06, Ming Chao <mingchao2005 at gmail.com> wrote:
>
> Hi Luis,
>
> Thanks very much for your excellent answers. Actually Andinet provided me
> a similar answer yesterday already. Here I encountered another question
> though. Since I need to create this spatial object with more than one
> regions in the new image, how do I add thse subregions to the new image.
> I tried to add them one by one but at the end of the day, only the last one
> was added.
>
>   Iterator it( image, insideRegion );
>   it.GoToBegin();
>
>   while( !it.IsAtEnd() )
>     {
>     it.Set( itk::NumericTraits< PixelType >::max() );
>     ++it;
>     }
>
> Here insideRegion is just a single region. Thanks for any hints.
>
> Ming
>
>  On 1/13/06, Luis Ibanez <luis.ibanez at kitware.com > wrote:
> >
> >
> > Hi Ming,
> >
> > Thanks for adding a couple of details to the
> > description of the problem that you are facing.
> >
> >
> > Please read the ITK Software Guide
> >
> >     http://www.itk.org/ItkSoftwareGuide.pdf
> >
> >
> > In particular the chapter on "Image Registration".
> >
> > and section:  8.11.3
> >
> >     "Registration using masks constructed
> >      with Spatial objects"
> >
> > in pdf-pages 464-466.
> >
> > The source code of the example is in
> >
> >        Examples/
> >           Registration/
> >               ImageRegistration12.cxx
> >
> >
> > You will find that it is possible to use a binary
> > Mask on top of the Fixed Image, and in that way,
> > to restrict the computation of the Metric to use
> > only the pixels from the FixedImage that are under
> > the ON pixels in the Mask.
> >
> > If you define the binary mask to have ON pixels
> > only on top of the two regions that you want to use
> > from your image, then the registration process will
> > be equivalent sot using just those two regions.
> >
> > Note that this is not the fastest possible approach.
> > In particular if your fixed image is large, and the
> > two regions are relatively small.  If computation
> > time is an issue, please let us know and we could
> > suggest you other options.  Note that the advantage
> > with using the Mask is that you can do it right now
> > without having to modify ITK code in any way.
> >
> >
> >     Regards,
> >
> >
> >
> >         Luis
> >
> >
> >
> > --------------------
> > Ming Chao wrote:
> > > Hi Luis,
> > >
> > > Yes, it is actually registration. Basically I want to find the
> > > corresponding two regions in the 2nd image. I think one solution might
> > > be to create a new image which contains only the two regions from the
> > > 1st image and then do registration (mapping) to find the corresponding
> >
> > > two regions in the 2nd image. Does that sound reasonable?
> > > Thanks,
> > > Ming
> > >
> > >
> > >
> > > On 1/12/06, *Luis Ibanez* < luis.ibanez at kitware.com
> > > <mailto:luis.ibanez at kitware.com >> wrote:
> > >
> > >
> > >     Hi Ming,
> > >
> > >     When you say "mapping" do you mean "registration" ?
> > >
> > >     or do you mean "copy/pasting" image regions ?
> > >
> > >
> > >     Please be more generous on the description of your problem,
> > >
> > >
> > >        Thanks
> > >
> > >
> > >          Luis
> > >
> > >
> > >     ----------------
> > >     Ming Chao wrote:
> > >      > Hi,
> > >      >
> > >      > I have a question about mapping of two regions from one image
> > to
> > >     a 2nd
> > >      > image simultaneously. It is fairly straightforward to map the
> > two
> > >      > regions one by one, but how do I map them at the same time?
> > >      >
> > >      > Many thanks for any hints in advance,
> > >      > Ming
> > >      >
> > >      >
> > >      >
> > >      >
> > >
> > ------------------------------------------------------------------------
> > >      >
> > >      > _______________________________________________
> > >      > Insight-users mailing list
> > >      > Insight-users at itk.org <mailto: Insight-users at itk.org>
> > >      > http://www.itk.org/mailman/listinfo/insight-users
> > >
> > >
> >
> >
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://public.kitware.com/pipermail/insight-users/attachments/20060113/c0b9c1d2/attachment.html