[Insight-users] registration and warping composite filter

[Luis Ibanez]

Hi Zoltan,


The common reasons for receiving this error message are:


A) You may be attempting to read data from an image that
     have not been loaded into memory.


or


B) In the RegionOfInterestImageFilter you may e requesting
    a region that is larger than the input image.


or


C) If you have run this piepeline more than once, and in the
     second run you attempt to process an image that is smaller
     than the input image used for the first run, the pipeline may
     fail to detect the change in size of the input.
     If this is the case, you should call UpdateLargestPossibleRegion()
     instead of just calling Update().



    Regards,


             Luis


--------------------------------------
On Wed, Feb 3, 2010 at 6:03 AM, Zoltan Seress <seress.zoltan at gmail.com> wrote:
> Hi Luis,
> Some days ago I decided to rewrite my filter derived from
> itk::ImageToImageFilter as you adviced. It seems to work as expected if the
> filter inputs are "full" images, which means:
> - the readers read the images from the disk
> - filter->SetFixedImage( reader1->GetOutput() ); and filter->SetMovingImage(
> reader2->GetOutput() );
> But when I try to extract some regions with itk::RegionOfInterestImageFilter
> and pass them as inputs for the filter, it throws an exception and gives the
> following error message:
> "Requested region is (at least partially) outside the largest possible
> region."
> The constructor and the setter methods are executed, but 'GenerateData()'
> does not start at all. The regions I extract are valid regions, they were
> checked.
> In filter.h my setter methods are all like this:
> void SetFixedImage( const FixedImageType * fImage )
>   { this->ProcessObject::SetNthInput( number, const_cast< FixedImageType *
>>( fImage ) );
> ,where FixedImageType is:
> typedef typename Superclass::InputImageType FixedImageType;
> Is there an obvious thing I miss?
>
> --
> Zoli
>