GDCM: MagnifyFile.cxx

GDCM 3.2.5

MagnifyFile.cxx
/*=========================================================================
Program: GDCM (Grassroots DICOM). A DICOM library
Copyright (c) 2006-2011 Mathieu Malaterre
All rights reserved.
See Copyright.txt or http://gdcm.sourceforge.net/Copyright.html for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkGDCMImageReader.h"
#include "vtkGDCMImageWriter.h"
#include "vtkImageData.h"
#include "vtkImageMagnify.h"
#include "vtkImageCast.h"
#include "vtkVersion.h"
#include "gdcmTesting.h"
#include "gdcmSystem.h"
// This is a simple test to magnify an image that is known to give excellent
// compression ratio. This will be our test for those large image
int main(int, char *[])
{
const char *directory = gdcm::Testing::GetDataRoot();
if(!directory) return 1;
std::string file = std::string(directory) + "/test.acr";
std::cout << file << std::endl;
if( !gdcm::System::FileExists( file.c_str() ) ) return 1;
vtkGDCMImageReader *reader = vtkGDCMImageReader::New();
reader->SetFileName( file.c_str() );
reader->Update();
//reader->GetOutput()->Print( std::cout );
vtkImageCast *cast = vtkImageCast::New();
#if (VTK_MAJOR_VERSION >= 6)
cast->SetInputConnection( reader->GetOutputPort() );
#else
cast->SetInput( reader->GetOutput() );
#endif
cast->SetOutputScalarTypeToUnsignedShort();
vtkImageMagnify *magnify = vtkImageMagnify::New();
#if (VTK_MAJOR_VERSION >= 6)
magnify->SetInputConnection( cast->GetOutputPort() );
#else
magnify->SetInput( cast->GetOutput() );
#endif
magnify->SetInterpolate( 1 );
magnify->SetInterpolate( 0 );
int factor = 100;
magnify->SetMagnificationFactors (factor, factor, 1);
vtkGDCMImageWriter *writer = vtkGDCMImageWriter::New();
writer->SetFileName( "/tmp/bla.dcm" );
#if (VTK_MAJOR_VERSION >= 6)
writer->SetInputConnection( magnify->GetOutputPort() );
#else
writer->SetInput( magnify->GetOutput() );
#endif
writer->SetImageFormat( reader->GetImageFormat() );
writer->SetMedicalImageProperties( reader->GetMedicalImageProperties() );
writer->SetDirectionCosines( reader->GetDirectionCosines() );
writer->SetShift( reader->GetShift() );
writer->SetScale( reader->GetScale() );
writer->Write();
// TODO:
//vtkImageAppendComponents.h
reader->Delete();
magnify->Delete();
writer->Delete();
return 0;
}
gdcm::System::FileExists
static bool FileExists(const char *filename)
Check whether the specified file exist on the system.
gdcm::Testing::GetDataRoot
static const char * GetDataRoot()
Return the GDCM DATA ROOT.
vtkGDCMImageReader
Definition vtkGDCMImageReader.h:105
vtkGDCMImageReader::New
static vtkGDCMImageReader * New()
vtkGDCMImageWriter
Definition vtkGDCMImageWriter.h:50
vtkGDCMImageWriter::Write
virtual void Write()
vtkGDCMImageWriter::New
static vtkGDCMImageWriter * New()
vtkGDCMImageWriter::SetMedicalImageProperties
virtual void SetMedicalImageProperties(vtkMedicalImageProperties *)
vtkGDCMImageWriter::SetDirectionCosines
virtual void SetDirectionCosines(vtkMatrix4x4 *matrix)
gdcmSystem.h
gdcmTesting.h
vtkGDCMImageReader.h
vtkGDCMImageWriter.h