On 03/12/2010 07:23 AM, apollocarlos wrote:
> Dear All,
> I am new to MITK. Now i'm trying to create a new, NULL mitk::image for
> contouring, as a mask on the images which are just read in. I tried like
> blow:
> mitk::Image::Pointer m_maskImage = mitk::Image::New();
> but when i tried to use GetPic() or GetGeometry(), it says the
> 0x00000000 memory can't be read.
> Could anyone help me?
Hi,
for a usable image, you have to call Initialize on the new mitk::Image.
This tells the image about the dimensions and the pixel type. Not that
the memory is only allocated, not initialized. A piece of code that
initializes an image of the same dimensions as a "template image" would
look like this:
mitk::Image::Pointer
CreateEmptySegmentationNode( Image* original )
{
if (!original) return NULL;
// actually create a new empty segmentation
PixelType pixelType( typeid(unsigned char) );
Image::Pointer segmentation = Image::New();
segmentation->Initialize( pixelType,
original->GetDimension(),
original->GetDimensions() );
unsigned int byteSize = sizeof(DefaultSegmentationDataType);
for (unsigned int dim = 0; dim < segmentation->GetDimension(); ++dim)
{
byteSize *= segmentation->GetDimension(dim);
}
memset( segmentation->GetData(), 0, byteSize );
if (original->GetTimeSlicedGeometry() )
{
AffineGeometryFrame3D::Pointer originalGeometryAGF =
original->GetTimeSlicedGeometry()->Clone();
TimeSlicedGeometry::Pointer originalGeometry =
dynamic_cast<TimeSlicedGeometry*>(
originalGeometryAGF.GetPointer() );
segmentation->SetGeometry( originalGeometry );
}
return segmentation;
}
Regards,
Daniel
--
Dr. Daniel Maleike Phone: +49 6221 42 2326
Deutsches Krebsforschungszentrum Im Neuenheimer Feld 280
Medical and Biological Informatics (E130) 69120 Heidelberg
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