[Insight-developers] Extrapolating vector images

[Bill Lorensen]

I agree with Tom. Most if not all of the itkVectorXXX classes are
candidates for removal (maybe not actually removed, but made trivial
subclasses of their non-vector relatives.)

Bill

On Mon, Aug 30, 2010 at 7:11 AM, Tom Vercauteren
<tom.vercauteren at m4x.org> wrote:
> Hi Kwame and Luis,
>
> My feeling is that the ExtrapolateImageFunction should work with
> vector images. If not, I would consider this to be a bug.
>
> As far as I understand it, the "Vector" versions of the
> Interpolate/ExtrapolateImageFunctions only exist for historical
> reasons (lack of partial template specialization on VS6). Now that VS6
> is gone, I'd rather get rid of all these "vector" classes as proposed
> in the ITK 4.0 wish list:
> http://www.itk.org/Wiki/ITK_Release_4/Wish_List#Image_Registration
>
> Just to make my point, you may look at the
> LinearInterpolateImageFunctionTest unit test that uses the standard
> LinearInterpolateImageFunction to interpolate vector images:
> http://github.com/Kitware/ITK/blob/master/Testing/Code/Common/itkLinearInterpolateImageFunctionTest.cxx
>
> Kwame: If anything really forbids the use of vector images in
> ExtrapolateImageFunction, could you please file a bug report:
> http://www.itk.org/Bug/my_view_page.php
>
> Thanks,
> Tom
>
> On Sat, Aug 28, 2010 at 22:04, Luis Ibanez <luis.ibanez at kitware.com> wrote:
>> Hi Kwame,
>>
>>
>> Great,
>>
>> I hope you are planning on submitting
>> this code to the Insight Journal.
>>
>>
>>      Thanks
>>
>>           Luis
>>
>> ------------------------------
>> On Sat, Aug 28, 2010 at 2:54 PM, Kwame Kutten <kkutten1 at jhmi.edu> wrote:
>>>
>>> I've just finished doing that (See attached file)
>>>
>>> Thanks for your help.
>>>
>>> ----- Original Message -----
>>> From: Luis Ibanez <luis.ibanez at kitware.com>
>>> Date: Saturday, August 28, 2010 2:02 pm
>>> Subject: Re: [Insight-developers] Extrapolating vector images
>>> To: Kwame Kutten <kkutten1 at jhmi.edu>
>>> Cc: insight-developers at itk.org
>>>
>>>
>>> > Hi Kwame,
>>> >
>>> > I would think that you should  write a class
>>> >
>>> >      itkVectorExtrapolateImageFunction
>>> >
>>> >
>>> > similar to the current
>>> >
>>> >      itkVectorInterpolateImageFunction
>>> >
>>> >
>>> >
>>> >
>>> >     Luis
>>> >
>>> >
>>> > -------------------------------
>>> > On Sat, Aug 28, 2010 at 11:04 AM, Kwame Kutten <kkutten1 at jhmi.edu>
>>> > wrote:
>>> >
>>> > > I've written some new image extrapolators
>>> > > (ConstantExtrapolateImageFunction
>>> > > and PeriodicExtrapolateImageFunction) derived from the
>>> > > ExtrapolateImageFunction class template.  They work with scaler
>>> > images but
>>> > > will not accept vector images because the base class was designed
>>> > for scalar
>>> > > images (
>>> > >
>>> > >
>>> > > Is there a way to modify the ExtrapolateImageFunction to work with
>>> > > vector
>>> > > images, or should I write a new vector-specific class (e.g.
>>> > > ExtrapolateVectorImageFunction ) ?
>>> > >
>>> > > Thanks
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>>
>>
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