[Insight-users] LaplacianImageFiler

[Bing Jian]

Hi Luis,

    You saved me! I was just trying to implement
such a filter myself. :-)
    Thanks a lot!

-- 
Best wishes,
Bing Jian
bjian at cise . ufl . edu


On Tue, 28 Oct 2003, Luis Ibanez wrote:

>
> Hi Bing,
>
> Thanks for pointing this out.
>
> You are right, once the ::New() method is instantiated
> it brings up a number of compilation errors.
>
> The fundamental reason seems to be that the
> LaplacianImageFilter is based on the use of
> Neighborhood iterators. This family of iterator
> do not support the use of ImageAdaptors and
> PixelAccessors.  We are looking into the trade-off
> issues involved in modifying these iterators for
> making them suitable to accept ImageAdaptors.
>
> In the meantime your best option seems to be to
> use the   VectorIndexSelectionCastImageFilter
>
> http://www . itk . org/Insight/Doxygen/html/classitk_1_1VectorIndexSelectionCastImageFilter . html
>
> This filter will accept as input an image of vector
> pixel type and generate an image of  scalar pixel type.
>
> You could connect your Vector image as input to this
> filter, and then take the output of the filter and
> pass it as input to the LaplacianImageFilter.
>
> Please let us know if you encounter any problem
> while doing this.
>
>
> Thanks
>
>
>    Luis
>
>
> ----------------------
> Bing Jian wrote:
> > Hi Luis,
> >
> >   In your example, you only define a type for LaplacianImageFilter.
> >
> >     typedef itk::LaplacianImageFilter< OffsetImageAdaptorType,
> >                                      LaplacianImageType > LaplacianFilterType;
> >
> >   It will not compile if you simply new an instance of it by adding
> >
> >    LaplacianFilterType::Pointer lapfilter = LaplacianFilterType::New();
> >
> >
> >
> >
>
>
>
>
>