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#include <algorithm>
#include <iostream>
#include <sstream>
#include <iomanip>
#include "antsUtilities.h"
#include <algorithm>
#include "itkTransform.h"
#include "itkCompositeTransform.h"
#include "itkDisplacementFieldTransform.h"
#include "antsCommandLineParser.h"
#include "itkantsReadWriteTransform.h"
#include "itkTransformFactory.h"
namespace ants
{
static bool MatOffRegistered[2] = { false, false };
template <unsigned int VImageDimension>
void RegisterMatOff()
{
if( !MatOffRegistered[VImageDimension - 2] )
{
MatOffRegistered[VImageDimension - 2] = true;
// Register the matrix offset transform base class to the
// transform factory for compatibility with the current ANTs.
typedef itk::MatrixOffsetTransformBase<double, VImageDimension,
VImageDimension> MatrixOffsetTransformType;
itk::TransformFactory<MatrixOffsetTransformType>::RegisterTransform();
}
}
/**
* print the usage and exit
*/
static void PrintGenericUsageStatement()
{
std::cout << "Usage: CompositeTransformUtil --disassemble <CompositeTransform FileName>"
<< " <transform name prefix>" << std::endl
<< "or" << std::endl
<< "CompositeTransformUtil --assemble <CompositeTransform> "
<< "<transform 1> <transform 2 > ... <transform N>" << std::endl;
}
/**
* given a composite transform, write out all its component
* transforms.
*/
template <unsigned int VImageDimension>
int
Disassemble(itk::TransformBaseTemplate<double> *transform, const std::string & transformName, const std::string & prefix)
{
typedef itk::CompositeTransform<double, VImageDimension> CompositeTransformType;
typedef typename CompositeTransformType::TransformTypePointer TransformPointer;
typedef typename itk::DisplacementFieldTransform<double, VImageDimension> DisplacementFieldTransformType;
CompositeTransformType *composite = dynamic_cast<CompositeTransformType *>(transform);
if( composite == ITK_NULLPTR )
{
std::cout << "Transform File " << transformName << " is a "
<< transform->GetNameOfClass() << " not a Composite Transform."
<< std::endl;
return EXIT_FAILURE;
}
const unsigned int numTransforms = composite->GetNumberOfTransforms();
for( unsigned int i = 0; i < numTransforms; ++i )
{
TransformPointer curXfrm = composite->GetNthTransform(i);
DisplacementFieldTransformType *dispXfrm =
dynamic_cast<DisplacementFieldTransformType *>(curXfrm.GetPointer() );
std::stringstream fname;
fname << std::setfill('0') << std::setw(2) << i
<< "_" << prefix << "_"
<< curXfrm->GetNameOfClass();
if( dispXfrm != ITK_NULLPTR )
{
fname << ".nii.gz"; // if it's a displacement field transform
}
else
{
fname << ".mat"; // .txt does not have enough precision!
}
itk::ants::WriteTransform<double, VImageDimension>(curXfrm, fname.str() );
}
return EXIT_SUCCESS;
}
static int Disassemble(const std::string & CompositeName,
const std::string & Prefix)
{
itk::TransformBaseTemplate<double>::Pointer transform = itk::ants::ReadTransform<double, 2>(CompositeName).GetPointer();
if( transform.IsNull() )
{
transform = itk::ants::ReadTransform<double, 3>(CompositeName).GetPointer();
if( transform.IsNull() )
{
return EXIT_FAILURE; // ReadTransform prints error messages on
// failure.
}
}
const unsigned int inDim(transform->GetInputSpaceDimension() );
const unsigned int outDim(transform->GetOutputSpaceDimension() );
if( inDim != outDim )
{
std::cout << "Can't handle mixed input & output dimension: input("
<< inDim << ") output (" << outDim << ")" << std::endl;
return EXIT_FAILURE;
}
switch( inDim )
{
case 2:
return Disassemble<2>(transform, CompositeName, Prefix);
case 3:
return Disassemble<3>(transform, CompositeName, Prefix);
default:
std::cout << "Unknown dimension " << inDim << std::endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
template <unsigned int VImageDimension>
int
Assemble(const std::string & CompositeName,
const std::vector<std::string> & transformNames,
const typename itk::Transform<double, VImageDimension, VImageDimension>::Pointer & firstTransform)
{
typedef itk::CompositeTransform<double, VImageDimension> CompositeTransformType;
typedef typename CompositeTransformType::TransformType TransformType;
typename CompositeTransformType::Pointer composite = CompositeTransformType::New();
composite->AddTransform(firstTransform);
for( unsigned int i = 1; i < transformNames.size(); ++i )
{
typename TransformType::Pointer curXfrm = itk::ants::ReadTransform<double, VImageDimension>(transformNames[i]);
if( curXfrm.IsNull() )
{
return EXIT_FAILURE; // ReadTransform will complain if anything goes wrong.
}
composite->AddTransform(curXfrm);
}
typename TransformType::Pointer genericXfrmPtr = composite.GetPointer();
return itk::ants::WriteTransform<double, VImageDimension>(genericXfrmPtr, CompositeName);
}
static int Assemble(const std::string & CompositeName,
const std::vector<std::string> & transformNames)
{
{
itk::Transform<double, 2, 2>::Pointer FirstTransform = itk::ants::ReadTransform<double, 2>(transformNames[0]);
if( FirstTransform.IsNotNull() )
{
return Assemble<2>(CompositeName, transformNames, FirstTransform);
}
}
{
itk::Transform<double, 3, 3>::Pointer FirstTransform = itk::ants::ReadTransform<double, 3>(transformNames[0]);
if( FirstTransform.IsNotNull() )
{
return Assemble<3>(CompositeName, transformNames, FirstTransform);
}
}
return EXIT_FAILURE;
}
// entry point for the library; parameter 'args' is equivalent to 'argv' in (argc,argv) of commandline parameters to
// 'main()'
int CompositeTransformUtil( std::vector<std::string> args, std::ostream* /*out_stream = NULL */)
{
// put the arguments coming in as 'args' into standard (argc,argv) format;
// 'args' doesn't have the command name as first, argument, so add it manually;
// 'args' may have adjacent arguments concatenated into one argument,
// which the parser should handle
args.insert( args.begin(), "CompositeTransformUtil" );
unsigned int argc = args.size();
char* * argv = new char *[argc + 1];
for( unsigned int i = 0; i < argc; ++i )
{
// allocate space for the string plus a null character
argv[i] = new char[args[i].length() + 1];
std::strncpy( argv[i], args[i].c_str(), args[i].length() );
// place the null character in the end
argv[i][args[i].length()] = '\0';
}
argv[argc] = ITK_NULLPTR;
// class to automatically cleanup argv upon destruction
class Cleanup_argv
{
public:
Cleanup_argv( char* * argv_, int argc_plus_one_ ) : argv( argv_ ), argc_plus_one( argc_plus_one_ )
{
}
~Cleanup_argv()
{
for( unsigned int i = 0; i < argc_plus_one; ++i )
{
delete[] argv[i];
}
delete[] argv;
}
private:
char* * argv;
unsigned int argc_plus_one;
};
Cleanup_argv cleanup_argv( argv, argc + 1 );
// antscout->set_stream( out_stream );
if( argc >= 2 && ( std::string( argv[1] ) == std::string("--help") || std::string( argv[1] ) == std::string("-h") ) )
{
PrintGenericUsageStatement();
return EXIT_SUCCESS;
}
if( argc < 2 )
{
PrintGenericUsageStatement();
return EXIT_FAILURE;
}
++argv; --argc;
std::string action(*argv);
++argv; --argc;
if( argc == 0 )
{
std::cout << "Missing CompositeTransformName" << std::endl;
PrintGenericUsageStatement();
return EXIT_FAILURE;
}
RegisterMatOff<2>();
RegisterMatOff<3>();
std::string CompositeName(*argv);
++argv; --argc;
if( action == "--disassemble" )
{
if( argc == 0 )
{
std::cout << "Missing output transforms prefix" << std::endl;
PrintGenericUsageStatement();
return EXIT_FAILURE;
}
std::string Prefix(*argv);
return Disassemble(CompositeName, Prefix);
}
else if( action != "--assemble" )
{
std::cout << "Unknown action " << action << std::endl;
PrintGenericUsageStatement();
return EXIT_FAILURE;
}
std::vector<std::string> transformNames;
do
{
std::string transformName(*argv);
++argv; --argc;
transformNames.push_back(transformName);
}
while( argc != 0 );
if( transformNames.size() < 1 )
{
std::cout << "Missing transform names to "
<< "assemble into a composite transform"
<< std::endl;
PrintGenericUsageStatement();
return EXIT_FAILURE;
}
return Assemble(CompositeName, transformNames);
}
} // namespace ants
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