[Insight-users] Write float / double images

[Olivier Tournaire]

Hi,

Here is the code I use (just for testing purposes on how to write an image
with float values) :

void main( int argc , char** argv )
{
    typedef itk::Image< float, 2 > FloatImageType;
    FloatImageType::Pointer flimzge = FloatImageType::New();

    FloatImageType::IndexType start;
    start[0] = 0; // first index on X
    start[1] = 0; // first index on Y
    FloatImageType::SizeType size;
    size[0] = 200; // size along X
    size[1] = 200; // size along Y

    FloatImageType::RegionType region;
    region.SetSize( size );
    region.SetIndex( start );

    flimzge->SetRegions( region );
    flimzge->Allocate();

    FloatImageType::IndexType pixelIndex;

    try
    {
        //filtre->Update();

        for (int i=0;i<200;i++)
        {
            pixelIndex[0] = i; // x position
            for (int j=0;j<200;j++)
            {
                pixelIndex[1] = j; // y position
                flimzge->SetPixel( pixelIndex, (i-j)*4.7 );
            }
        }

        typedef itk::ImageFileWriter< FloatImageType > WriterType;
        WriterType::Pointer writer = WriterType::New();
        writer->SetInput(flimzge);
        writer->SetFileName( "C:\\test.tif" );
        writer->Update();
    }
    catch( itk::ExceptionObject e)
    {
        std::cout << e << std::endl;
    }
}

The exception is :

itk::ExceptionObject (00F7FEF8)
Location: "void __thiscall itk::TIFFImageIO::InternalWrite(const void *)"
File: .\itkTIFFImageIO.cxx
Line: 1659
Description: itk::ERROR: TIFFImageIO(01443978): TIFF supports
unsigned/signed char and unsigned/signed short

So, the ITK TIFF writer does not support float pixels. Is there a way to
write images with float pixels in TIFF format ?

Regards,

Olivier

2008/1/15, gabri <tartuz at gmail.com>:
>
> Hi,
> give more information for asking an help like cut 'n paste here the
> exception you read and the code lines you are using.
>
> Best reguards
>
> gabriele
>
> Olivier Tournaire ha scritto:
> > Hi all,
> >
> > I am new to ITK and I tried to write a simple image of float, but it
> > throws an exception. Is there a way to write such images ? If not,
> > could you give me a way on how to add this functionnality ?
> >
> > Regards
> >
> > Olivier
> > _______________________________________________
> > Insight-users mailing list
> > Insight-users at itk.org
> > http://www.itk.org/mailman/listinfo/insight-users
> >
>
>
>
>
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