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/*=========================================================================
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 "gdcmImageReader.h"
#include "gdcmExplicitDataElement.h"
#include "gdcmImplicitDataElement.h"
#include "gdcmValue.h"
#include "gdcmFileMetaInformation.h"
#include "gdcmElement.h"
#include "gdcmPhotometricInterpretation.h"
#include "gdcmTransferSyntax.h"
#include "gdcmAttribute.h"
#include "gdcmImageHelper.h"
#include "gdcmPrivateTag.h"
#include "gdcmJPEGCodec.h"
namespace gdcm
{
ImageReader::ImageReader()
{
PixelData = new Image;
}
ImageReader::~ImageReader()
= default;
const Image& ImageReader::GetImage() const
{
return dynamic_cast<const Image&>(*PixelData);
}
Image& ImageReader::GetImage()
{
return dynamic_cast<Image&>(*PixelData);
}
//void ImageReader::SetImage(Image const &img)
//{
// PixelData = img;
//}
bool ImageReader::Read()
{
return PixmapReader::Read();
}
bool ImageReader::ReadImage(MediaStorage const &ms)
{
if( !PixmapReader::ReadImage(ms) )
{
return false;
}
//const DataSet &ds = F->GetDataSet();
Image& pixeldata = GetImage();
// 4 1/2 Let's do Pixel Spacing
std::vector<double> spacing = ImageHelper::GetSpacingValue(*F);
// FIXME: Only SC is allowed not to have spacing:
if( !spacing.empty() )
{
assert( spacing.size() >= pixeldata.GetNumberOfDimensions() ); // In MR, you can have a Z spacing, but store a 2D image
pixeldata.SetSpacing( &spacing[0] );
if( spacing.size() > pixeldata.GetNumberOfDimensions() ) // FIXME HACK
{
pixeldata.SetSpacing(pixeldata.GetNumberOfDimensions(), spacing[pixeldata.GetNumberOfDimensions()] );
}
}
// 4 2/3 Let's do Origin
std::vector<double> origin = ImageHelper::GetOriginValue(*F);
if( !origin.empty() )
{
pixeldata.SetOrigin( &origin[0] );
if( origin.size() > pixeldata.GetNumberOfDimensions() ) // FIXME HACK
{
pixeldata.SetOrigin(pixeldata.GetNumberOfDimensions(), origin[pixeldata.GetNumberOfDimensions()] );
}
}
std::vector<double> dircos = ImageHelper::GetDirectionCosinesValue(*F);
if( !dircos.empty() )
{
pixeldata.SetDirectionCosines( &dircos[0] );
}
// Do the Rescale Intercept & Slope
std::vector<double> is = ImageHelper::GetRescaleInterceptSlopeValue(*F);
pixeldata.SetIntercept( is[0] );
pixeldata.SetSlope( is[1] );
return true;
}
bool ImageReader::ReadACRNEMAImage()
{
if( !PixmapReader::ReadACRNEMAImage() )
{
return false;
}
const DataSet &ds = F->GetDataSet();
Image& pixeldata = GetImage();
// 4 1/2 Let's do Pixel Spacing
const Tag tpixelspacing(0x0028, 0x0030);
if( ds.FindDataElement( tpixelspacing ) )
{
const DataElement& de = ds.GetDataElement( tpixelspacing );
Attribute<0x0028,0x0030> at;
at.SetFromDataElement( de );
pixeldata.SetSpacing( 0, at.GetValue(0));
pixeldata.SetSpacing( 1, at.GetValue(1));
}
// 4 2/3 Let's do Origin
const Tag timageposition(0x0020, 0x0030);
if( ds.FindDataElement( timageposition) )
{
const DataElement& de = ds.GetDataElement( timageposition);
Attribute<0x0020,0x0030> at = {{}};
at.SetFromDataElement( de );
pixeldata.SetOrigin( at.GetValues() );
if( at.GetNumberOfValues() > pixeldata.GetNumberOfDimensions() ) // FIXME HACK
{
pixeldata.SetOrigin(pixeldata.GetNumberOfDimensions(), at.GetValue(pixeldata.GetNumberOfDimensions()) );
}
}
const Tag timageorientation(0x0020, 0x0035);
if( ds.FindDataElement( timageorientation) )
{
const DataElement& de = ds.GetDataElement( timageorientation);
Attribute<0x0020,0x0035> at = {{1,0,0,0,1,0}};//to get rid of brackets warnings in linux, lots of {}
at.SetFromDataElement( de );
pixeldata.SetDirectionCosines( at.GetValues() );
}
// Do the Rescale Intercept & Slope
std::vector<double> is = ImageHelper::GetRescaleInterceptSlopeValue(*F);
pixeldata.SetIntercept( is[0] );
pixeldata.SetSlope( is[1] );
return true;
}
} // end namespace gdcm
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