1 /*=========================================================================
2 Program: vv http://www.creatis.insa-lyon.fr/rio/vv
5 - University of LYON http://www.universite-lyon.fr/
6 - Léon Bérard cancer center http://www.centreleonberard.fr
7 - CREATIS CNRS laboratory http://www.creatis.insa-lyon.fr
9 This software is distributed WITHOUT ANY WARRANTY; without even
10 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
11 PURPOSE. See the copyright notices for more information.
13 It is distributed under dual licence
15 - BSD See included LICENSE.txt file
16 - CeCILL-B http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.html
17 ===========================================================================**/
19 #ifndef CLITKAFFINEREGISTRATIONGENERICFILTER_CXX
20 #define CLITKAFFINEREGISTRATIONGENERICFILTER_CXX
22 #include "clitkAffineRegistrationGenericFilter.h"
26 //==============================================================================
27 //Creating an observer class that allows us to monitor the registration
28 //================================================================================
29 class CommandIterationUpdate : public itk::Command
32 typedef CommandIterationUpdate Self;
33 typedef itk::Command Superclass;
34 typedef itk::SmartPointer<Self> Pointer;
37 CommandIterationUpdate() {};
39 typedef clitk::GenericOptimizer<args_info_clitkAffineRegistration> OptimizerType;
40 typedef const OptimizerType * OptimizerPointer;
42 // Set the generic optimizer
43 void SetOptimizer(OptimizerPointer o) {
48 void Execute(itk::Object *caller, const itk::EventObject & event) ITK_OVERRIDE {
49 Execute( (const itk::Object *)caller, event);
52 void Execute(const itk::Object * object, const itk::EventObject & event) ITK_OVERRIDE {
53 if ( !(itk::IterationEvent().CheckEvent( &event )) ) {
57 m_Optimizer->OutputIterationInfo();
60 OptimizerPointer m_Optimizer;
62 //==================================================================================================================================//
64 //===================================================================================================================================//
66 AffineRegistrationGenericFilter::AffineRegistrationGenericFilter():
67 ImageToImageGenericFilter<Self>("Register")
70 InitializeImageType<2>();
71 InitializeImageType<3>();
74 //==========================================================================================================//
75 //============================================================================================================//
76 //--------------------------------------------------------------------
77 template<unsigned int Dim>
78 void AffineRegistrationGenericFilter::InitializeImageType()
80 ADD_DEFAULT_IMAGE_TYPES(Dim);
82 //--------------------------------------------------------------------
85 //==============================================================================
86 //Creating an observer class that allows us to change parameters at subsequent levels
87 //==============================================================================
88 template <typename TRegistration>
89 class RegistrationInterfaceCommand : public itk::Command
92 typedef RegistrationInterfaceCommand Self;
93 typedef itk::Command Superclass;
94 typedef itk::SmartPointer<Self> Pointer;
97 RegistrationInterfaceCommand() {};
101 typedef TRegistration RegistrationType;
102 typedef RegistrationType * RegistrationPointer;
105 typedef typename RegistrationType::FixedImageType InternalImageType;
106 typedef clitk::GenericMetric<args_info_clitkAffineRegistration, InternalImageType, InternalImageType> GenericMetricType;
108 // Two arguments are passed to the Execute() method: the first
109 // is the pointer to the object which invoked the event and the
110 // second is the event that was invoked.
111 void Execute(itk::Object * object, const itk::EventObject & event) ITK_OVERRIDE {
112 if ( !(itk::IterationEvent().CheckEvent( &event )) ) {
117 RegistrationPointer registration = dynamic_cast<RegistrationPointer>( object );
118 unsigned int numberOfLevels=registration->GetNumberOfLevels();
119 unsigned int currentLevel=registration->GetCurrentLevel()+1;
122 std::cout<<std::endl;
123 std::cout<<"========================================"<<std::endl;
124 std::cout<<"Starting resolution level "<<currentLevel<<" of "<<numberOfLevels<<"..."<<std::endl;
125 std::cout<<"========================================"<<std::endl;
126 std::cout<<std::endl;
129 if (currentLevel>1) {
130 // Reinitialize the metric (!= number of samples)
131 typename GenericMetricType::Pointer genericMetric= GenericMetricType::New();
132 genericMetric->SetArgsInfo(m_ArgsInfo);
133 genericMetric->SetFixedImage(registration->GetFixedImagePyramid()->GetOutput(registration->GetCurrentLevel()));
134 if (m_ArgsInfo.referenceMask_given) genericMetric->SetFixedImageMask(registration->GetMetric()->GetFixedImageMask());
135 typedef itk::ImageToImageMetric< InternalImageType, InternalImageType > MetricType;
136 typename MetricType::Pointer metric=genericMetric->GetMetricPointer();
137 registration->SetMetric(metric);
141 void Execute(const itk::Object * , const itk::EventObject & ) ITK_OVERRIDE {
145 void SetArgsInfo(args_info_clitkAffineRegistration a) {
148 args_info_clitkAffineRegistration m_ArgsInfo;
151 //==============================================================================================//
153 //==============================================================================================//
154 void AffineRegistrationGenericFilter::SetArgsInfo(const args_info_clitkAffineRegistration & a)
157 if (m_ArgsInfo.reference_given) AddInputFilename(m_ArgsInfo.reference_arg);
159 if (m_ArgsInfo.target_given) {
160 AddInputFilename(m_ArgsInfo.target_arg);
163 if (m_ArgsInfo.output_given) SetOutputFilename(m_ArgsInfo.output_arg);
165 //==============================================================================
166 // Update with the number of dimensions and pixeltype
167 //==============================================================================
168 template<class InputImageType>
169 void AffineRegistrationGenericFilter::UpdateWithInputImageType()
171 //=============================================================================
173 //=============================================================================
175 typedef typename InputImageType::PixelType PixelType;
176 //typedef typename InputImageType::ImageDimension Dimension;
178 bool threadsGiven=m_ArgsInfo.threads_given;
179 int threads=m_ArgsInfo.threads_arg;
181 //Coordinate Representation
182 typedef double TCoordRep;
185 typename InputImageType::Pointer fixedImage = this->template GetInput<InputImageType>(0);
187 typename InputImageType::Pointer inputFixedImage = this->template GetInput<InputImageType>(0);
190 typename InputImageType::Pointer movingImage = this->template GetInput<InputImageType>(1);
192 typename InputImageType::Pointer inputMovingImage = this->template GetInput<InputImageType>(1);
196 //The pixeltype of the fixed image will be used for output
197 typedef itk::Image< PixelType, InputImageType::ImageDimension > FixedImageType;
199 //Whatever the pixel type, internally we work with an image represented in float
200 typedef typename InputImageType::PixelType InternalPixelType;
201 typedef itk::Image< PixelType, InputImageType::ImageDimension > InternalImageType;
204 //Read in the reference/fixed image
205 // typedef itk::ImageFileReader< InternalImageType > ReaderType;
206 // typename ReaderType::Pointer fixedImageReader = ReaderType::New();
207 // fixedImageReader->SetFileName( m_ArgsInfo.reference_arg);
210 //Read in the object/moving image
211 // typename ReaderType::Pointer movingImageReader = ReaderType::New();
212 // movingImageReader->SetFileName( m_ArgsInfo.target_arg );
213 if (m_Verbose) std::cout<<"Reading images..."<<std::endl;
214 // fixedImageReader->Update();
215 // movingImageReader->Update();
217 if (m_Verbose) std::cout << "Reading images... " << std::endl;
219 //we connect pointers to these internal images
220 // typedef typename fixedImageReader fixedImage;
221 // typedef typename movingImageReader movingImage;
223 //We keep the images used for input for possible output
224 // typedef typename fixedImageReader inputFixedImage;
225 // typedef typename movingImageReader inputMovingImage;
228 //============================================================================
230 //============================================================================
232 //If given, the intensities of both images are first normalized to a zero mean and SD of 1
233 // (usefull for MI, not necessary for Mattes' MI but performed anyway for the ouput)
234 if ( m_ArgsInfo.normalize_flag ) {
235 typedef itk::NormalizeImageFilter< InternalImageType,InternalImageType > NormalizeFilterType;
237 typename NormalizeFilterType::Pointer fixedNormalizeFilter = NormalizeFilterType::New();
238 typename NormalizeFilterType::Pointer movingNormalizeFilter = NormalizeFilterType::New();
240 fixedNormalizeFilter->SetInput( fixedImage );
241 movingNormalizeFilter->SetInput( movingImage );
243 fixedNormalizeFilter->Update();
244 movingNormalizeFilter->Update();
246 //We keep the images used for input for possible output
247 inputFixedImage= fixedNormalizeFilter->GetOutput();
248 inputMovingImage= movingNormalizeFilter->GetOutput();
250 //the pointers are reconnected for further output
251 fixedImage=fixedNormalizeFilter->GetOutput();
252 movingImage=movingNormalizeFilter->GetOutput();
254 if (m_Verbose) std::cout << "Normalizing image intensities to zero mean and SD of 1..." << std::endl;
258 //If given, the images are blurred before processing
259 if ( m_ArgsInfo.blur_arg!= 0) {
260 typedef itk::DiscreteGaussianImageFilter<InternalImageType,InternalImageType> GaussianFilterType;
261 typename GaussianFilterType::Pointer fixedSmoother = GaussianFilterType::New();
262 typename GaussianFilterType::Pointer movingSmoother = GaussianFilterType::New();
263 fixedSmoother->SetVariance( m_ArgsInfo.blur_arg );
264 movingSmoother->SetVariance(m_ArgsInfo.blur_arg );
266 fixedSmoother->SetInput( fixedImage );
267 movingSmoother->SetInput( movingImage );
269 fixedSmoother->Update();
270 movingSmoother->Update();
272 fixedImage=fixedSmoother->GetOutput();
273 movingImage=movingSmoother->GetOutput();
275 if (m_Verbose) std::cout << "Blurring images with a Gaussian with standard deviation of " << m_ArgsInfo.blur_arg <<"..." << std::endl;
279 //============================================================================
280 // Setting up the moving image in a reference system
281 //============================================================================
282 const itk::Vector<double, InputImageType::ImageDimension> movingResolution = movingImage->GetSpacing();
283 typename InternalImageType::RegionType movingRegion = movingImage->GetLargestPossibleRegion();
284 typename InternalImageType::RegionType::SizeType movingSize = movingRegion.GetSize();
286 // Print the parameters of the moving image
288 std::cout << "Object or Moving image:"<<std::endl;
289 std::cout << "Size: " << movingSize[0] << ", " << movingSize[1];
290 if (InputImageType::ImageDimension==3) std::cout<<", " << movingSize[2];
291 std::cout << std::endl;
293 std::cout<< "Resolution: "<< movingResolution[0] << ", " << movingResolution[1];
294 if (InputImageType::ImageDimension==3) std::cout<< ", " << movingResolution[2];
295 std::cout << std::endl;
299 //============================================================================
300 // Setting up the fixed image in a reference system
301 //============================================================================
302 const itk::Vector<double, InputImageType::ImageDimension> fixedResolution = fixedImage->GetSpacing();
303 typename InternalImageType::RegionType fixedRegion = fixedImage->GetLargestPossibleRegion();
304 typename InternalImageType::RegionType::SizeType fixedSize = fixedRegion.GetSize();
306 // Print the parameters of the moving image and the transform
308 std::cout << "Target or Moving image:"<<std::endl;
309 std::cout << "Size: " << fixedSize[0] << ", " << fixedSize[1];
310 if (InputImageType::ImageDimension==3) std::cout<<", " << fixedSize[2];
311 std::cout << std::endl;
313 std::cout<< "Resolution: "<< fixedResolution[0] << ", " << fixedResolution[1];
314 if (InputImageType::ImageDimension==3) std::cout<< ", " << fixedResolution[2];
315 std::cout << std::endl;
320 //===========================================================================
321 // If given, we connect a mask to reference or target
322 //============================================================================
323 typedef itk::ImageMaskSpatialObject< InputImageType::ImageDimension > MaskType;
324 typename MaskType::Pointer fixedMask=NULL;
325 if (m_ArgsInfo.referenceMask_given) {
326 fixedMask= MaskType::New();
327 typedef itk::Image< unsigned char, InputImageType::ImageDimension > ImageMaskType;
328 typedef itk::ImageFileReader< ImageMaskType > MaskReaderType;
329 typename MaskReaderType::Pointer maskReader = MaskReaderType::New();
330 maskReader->SetFileName(m_ArgsInfo.referenceMask_arg);
332 maskReader->Update();
333 } catch ( itk::ExceptionObject & err ) {
334 std::cerr << "ExceptionObject caught while reading mask !" << std::endl;
335 std::cerr << err << std::endl;
338 if (m_Verbose)std::cout <<"Reference image mask was read..." <<std::endl;
340 // Set the image to the spatialObject
341 fixedMask->SetImage( maskReader->GetOutput() );
344 typedef itk::ImageMaskSpatialObject< InputImageType::ImageDimension > MaskType;
345 typename MaskType::Pointer movingMask=NULL;
346 if (m_ArgsInfo.targetMask_given) {
347 movingMask= MaskType::New();
348 typedef itk::Image< unsigned char, InputImageType::ImageDimension > ImageMaskType;
349 typedef itk::ImageFileReader< ImageMaskType > MaskReaderType;
350 typename MaskReaderType::Pointer maskReader = MaskReaderType::New();
351 maskReader->SetFileName(m_ArgsInfo.targetMask_arg);
353 maskReader->Update();
354 } catch ( itk::ExceptionObject & err ) {
355 std::cerr << "ExceptionObject caught !" << std::endl;
356 std::cerr << err << std::endl;
358 if (m_Verbose)std::cout <<"Target image mask was read..." <<std::endl;
360 movingMask->SetImage( maskReader->GetOutput() );
364 //============================================================================
365 // The image pyramids
366 //============================================================================
367 typedef itk::RecursiveMultiResolutionPyramidImageFilter<InternalImageType,InternalImageType > FixedImagePyramidType;
368 typedef itk::RecursiveMultiResolutionPyramidImageFilter<InternalImageType,InternalImageType > MovingImagePyramidType;
369 typename FixedImagePyramidType::Pointer fixedImagePyramid = FixedImagePyramidType::New();
370 typename MovingImagePyramidType::Pointer movingImagePyramid = MovingImagePyramidType::New();
371 fixedImagePyramid->SetUseShrinkImageFilter(false);
372 fixedImagePyramid->SetInput(fixedImage);
373 fixedImagePyramid->SetNumberOfLevels(m_ArgsInfo.levels_arg);
374 movingImagePyramid->SetUseShrinkImageFilter(false);
375 movingImagePyramid->SetInput(movingImage);
376 movingImagePyramid->SetNumberOfLevels(m_ArgsInfo.levels_arg);
377 if (m_Verbose) std::cout<<"Creating the image pyramid..."<<std::endl;
379 fixedImagePyramid->Update();
380 movingImagePyramid->Update();
384 //============================================================================
385 // We retrieve the type of metric from the command line
386 //============================================================================
387 typedef clitk::GenericMetric<args_info_clitkAffineRegistration, InternalImageType, InternalImageType> GenericMetricType;
388 typename GenericMetricType::Pointer genericMetric=GenericMetricType::New();
389 genericMetric->SetArgsInfo(m_ArgsInfo);
390 genericMetric->SetFixedImage(fixedImagePyramid->GetOutput(0));
391 if (fixedMask) genericMetric->SetFixedImageMask(fixedMask);
392 typedef itk::ImageToImageMetric< InternalImageType, InternalImageType > MetricType;
393 typename MetricType::Pointer metric=genericMetric->GetMetricPointer();
394 if (movingMask) metric->SetMovingImageMask(movingMask);
396 if (threadsGiven) metric->SetNumberOfThreads( threads );
398 //============================================================================
399 // Initialize using image moments.
400 //============================================================================
401 if (m_ArgsInfo.moment_flag) {
402 typedef itk::ImageMomentsCalculator< InternalImageType > CalculatorType;
403 typename CalculatorType::Pointer fixedCalculator= CalculatorType::New();
405 typename InternalImageType::Pointer fixedThresh;
406 if (m_ArgsInfo.intThreshold_given) {
407 typedef itk::ThresholdImageFilter<InternalImageType> ThresholdImageFilterType;
408 typename ThresholdImageFilterType::Pointer thresholder = ThresholdImageFilterType::New();
409 thresholder->SetInput(fixedImage);
410 thresholder->SetLower(m_ArgsInfo.intThreshold_arg);
411 thresholder->Update();
412 fixedThresh=thresholder->GetOutput();
413 } else fixedThresh=fixedImage;
415 fixedCalculator->SetImage(fixedThresh);
416 fixedCalculator->Compute();
417 Vector<double, InputImageType::ImageDimension> fixedCenter=fixedCalculator->GetCenterOfGravity();
418 if (m_Verbose)std::cout<<"The fixed center of gravity is "<<fixedCenter<<"..."<<std::endl;
420 typedef itk::ImageMomentsCalculator< InternalImageType > CalculatorType;
421 typename CalculatorType::Pointer movingCalculator= CalculatorType::New();
423 typename InternalImageType::Pointer movingThresh;
424 if (m_ArgsInfo.intThreshold_given) {
425 typedef itk::ThresholdImageFilter<InternalImageType> ThresholdImageFilterType;
426 typename ThresholdImageFilterType::Pointer thresholder = ThresholdImageFilterType::New();
427 thresholder->SetInput(movingImage);
428 thresholder->SetLower(m_ArgsInfo.intThreshold_arg);
429 thresholder->Update();
430 movingThresh=thresholder->GetOutput();
431 } else movingThresh=movingImage;
433 movingCalculator->SetImage(movingThresh);
434 movingCalculator->Compute();
435 Vector<double, InputImageType::ImageDimension> movingCenter=movingCalculator->GetCenterOfGravity();
436 if (m_Verbose)std::cout<<"The moving center of gravity is "<<movingCenter<<"..."<<std::endl;
438 Vector<double, InputImageType::ImageDimension> shift= movingCenter-fixedCenter;
439 if (m_Verbose)std::cout<<"The initial shift applied is "<<shift<<"..."<<std::endl;
441 m_ArgsInfo.transX_arg= shift [0];
442 m_ArgsInfo.transY_arg= shift [1];
443 if (InputImageType::ImageDimension==3) m_ArgsInfo.transZ_arg=shift [2];
446 //============================================================================
448 //============================================================================
449 typedef clitk::GenericAffineTransform<args_info_clitkAffineRegistration, TCoordRep, InputImageType::ImageDimension > GenericAffineTransformType;
450 typename GenericAffineTransformType::Pointer genericAffineTransform = GenericAffineTransformType::New();
451 genericAffineTransform->SetArgsInfo(m_ArgsInfo);
452 typedef itk::Transform< double, InputImageType::ImageDimension, InputImageType::ImageDimension > TransformType;
453 typename TransformType::Pointer transform = genericAffineTransform->GetTransform();
454 std::cout<<m_ArgsInfo.transform_arg<<std::endl;
457 //=======================================================
459 //=======================================================
460 std::cout<<"setting Interpolator..."<<std::endl;
461 typedef clitk::GenericInterpolator<args_info_clitkAffineRegistration, InternalImageType,TCoordRep > GenericInterpolatorType;
462 typename GenericInterpolatorType::Pointer genericInterpolator=GenericInterpolatorType::New();
463 genericInterpolator->SetArgsInfo(m_ArgsInfo);
464 typedef itk::InterpolateImageFunction< InternalImageType, TCoordRep > InterpolatorType;
465 typename InterpolatorType::Pointer interpolator=genericInterpolator->GetInterpolatorPointer();
466 std::cout<<"end of interpolator"<<std::endl;
468 //============================================================================
470 //============================================================================
471 typedef clitk::GenericOptimizer<args_info_clitkAffineRegistration> GenericOptimizerType;
472 unsigned int nParam = transform->GetNumberOfParameters();
473 typename GenericOptimizerType::Pointer genericOptimizer=GenericOptimizerType::New();
474 genericOptimizer->SetArgsInfo(m_ArgsInfo);
475 genericOptimizer->SetOutputIteration(m_Verbose);
476 genericOptimizer->SetOutputPosition(m_Verbose);
477 genericOptimizer->SetOutputValue(m_Verbose);
478 genericOptimizer->SetOutputGradient(m_ArgsInfo.gradient_flag);
479 genericOptimizer->SetMaximize(genericMetric->GetMaximize());
480 genericOptimizer->SetNumberOfParameters(nParam);
481 typedef itk::SingleValuedNonLinearOptimizer OptimizerType;
482 OptimizerType::Pointer optimizer=genericOptimizer->GetOptimizerPointer();
485 itk::Optimizer::ScalesType scales( nParam );
486 for (unsigned int i=nParam-InputImageType::ImageDimension; i<nParam; i++) //Translations
487 scales[i] = m_ArgsInfo.tWeight_arg;
488 for (unsigned int i=0; i<nParam-InputImageType::ImageDimension; i++) //Rest
489 scales[i] = m_ArgsInfo.rWeight_arg*180./M_PI;
490 optimizer->SetScales(scales);
491 //============================================================================
492 // Multiresolution registration
493 //============================================================================
494 std::cout<<"start MultiResolution..."<<std::endl;
495 typedef itk::MultiResolutionImageRegistrationMethod< InternalImageType,InternalImageType > RegistrationType;
496 typename RegistrationType::Pointer registration = RegistrationType::New();
497 registration->SetFixedImage( fixedImage );
498 registration->SetFixedImageRegion(fixedImage->GetLargestPossibleRegion());
499 registration->SetMovingImage( movingImage );
500 registration->SetFixedImagePyramid( fixedImagePyramid );
501 registration->SetMovingImagePyramid( movingImagePyramid );
502 registration->SetTransform( transform );
503 registration->SetInitialTransformParameters( transform->GetParameters() );
504 registration->SetInterpolator( interpolator );
505 registration->SetMetric(metric);
506 registration->SetOptimizer(optimizer);
507 registration->SetNumberOfLevels( m_ArgsInfo.levels_arg );
508 if (m_Verbose) std::cout << "Setting "<< m_ArgsInfo.levels_arg <<" resolution levels..." << std::endl;
509 if (m_Verbose) std::cout << "Initial Transform: "<< registration->GetInitialTransformParameters()<<std::endl;
511 //============================================================================
512 // Connecting the commander to the registration to monitor it
513 //============================================================================
516 // Output iteration info
517 CommandIterationUpdate::Pointer observer = CommandIterationUpdate::New();
518 observer->SetOptimizer(genericOptimizer);
519 optimizer->AddObserver( itk::IterationEvent(), observer );
523 typedef RegistrationInterfaceCommand<RegistrationType> CommandType;
524 typename CommandType::Pointer command = CommandType::New();
525 command->SetArgsInfo(m_ArgsInfo);
526 registration->AddObserver( itk::IterationEvent(), command );
531 //============================================================================
532 // Finally we can start the registration with the given amount of multiresolution levels
533 //============================================================================
534 if (m_Verbose) std::cout << "Starting the registration now..." << std::endl;
537 registration->Update();
538 } catch ( itk::ExceptionObject & err ) {
539 std::cerr << "ExceptionObject caught !" << std::endl;
540 std::cerr << err << std::endl;
544 //============================================================================
545 // Processing the result of the registration
546 //============================================================================
547 OptimizerType::ParametersType finalParameters = registration->GetLastTransformParameters();
548 std::cout<< "Result : " <<std::setprecision(12)<<std::endl;
550 for (unsigned int i=nParam-InputImageType::ImageDimension; i<nParam; i++) //Translations
551 std::cout << " Translation " << i << " = " << finalParameters[i];
552 for (unsigned int i=0; i<nParam-InputImageType::ImageDimension; i++) //Rest
553 std::cout << " Other parameter " << i << " = " << finalParameters[i];
555 itk::Matrix<double,InputImageType::ImageDimension+1,InputImageType::ImageDimension+1> matrix;
556 if (m_ArgsInfo.transform_arg == 3) {
557 for (unsigned int i=0; i<InputImageType::ImageDimension; i++) {
558 matrix[i][3] = finalParameters[nParam-InputImageType::ImageDimension+i];
559 for (unsigned int j=0; j<InputImageType::ImageDimension; j++) {
560 matrix[i][j] = finalParameters[i*3+j];
565 matrix = clitk::GetBackwardAffineMatrix<InputImageType::ImageDimension>(finalParameters);
566 std::cout<<"outside GetBackWardAffineMatrix...."<<std::endl;
569 std::cout << " Affine transform matrix =" << std::endl;
570 std::cout << matrix <<std::setprecision(6)<< std::endl;
571 std::cout << " End of Registration" << std::endl;
572 // Write matrix to a file
573 if (m_ArgsInfo.matrix_given) {
575 mFile.open(m_ArgsInfo.matrix_arg);
576 mFile<<std::setprecision(12)<<matrix<< std::setprecision(6)<<std::endl;
580 //============================================================================
581 // Prepare the resampling filter in order to transform the moving image.
582 //============================================================================
583 // if (m_ArgsInfo.output_given || m_ArgsInfo.checker_after_given || m_ArgsInfo.after_given ) {
584 transform->SetParameters( finalParameters );
585 typedef itk::ResampleImageFilter< InternalImageType,InternalImageType > ResampleFilterType;
586 typename ResampleFilterType::Pointer resampler = ResampleFilterType::New();
588 resampler->SetTransform( transform );
589 resampler->SetInput( movingImage );
590 resampler->SetSize( fixedImage->GetLargestPossibleRegion().GetSize() );
591 resampler->SetOutputOrigin( fixedImage->GetOrigin() );
592 resampler->SetOutputSpacing( fixedImage->GetSpacing() );
593 resampler->SetDefaultPixelValue( 0 );
596 // if (m_ArgsInfo.output_given) {
597 //We write an output in the same pixeltype then the input
598 /*typedef itk::ImageFileWriter< FixedImageType > WriterType;
599 typename WriterType::Pointer outputWriter = WriterType::New();
600 outputWriter->SetFileName(m_ArgsInfo.output_arg );
601 outputWriter->SetInput( resampler->GetOutput() );
602 outputWriter->Update();*/
603 typedef InternalImageType OutputImageType;
604 typename OutputImageType::Pointer outputImage = resampler->GetOutput();
605 std::cout<<"Writing Output....."<<std::endl;
606 this->template SetNextOutput<OutputImageType>(outputImage);
610 //============================================================================
612 //============================================================================
613 if (m_ArgsInfo.checker_after_given) {
614 //To display correctly the checkerboard image, the intensities must lie in the same range (normalized)
615 //We write the image in the internal image type
616 typedef itk::ResampleImageFilter< InternalImageType,InternalImageType > ResampleFilterType;
617 typename ResampleFilterType::Pointer internalResampler = ResampleFilterType::New();
618 internalResampler->SetTransform( transform );
619 internalResampler->SetInput( inputMovingImage );
620 internalResampler->SetSize( fixedImage->GetLargestPossibleRegion().GetSize() );
621 internalResampler->SetOutputOrigin( fixedImage->GetOrigin() );
622 internalResampler->SetOutputSpacing( fixedImage->GetSpacing() );
623 internalResampler->SetDefaultPixelValue( 0 );
625 //We pass the normalized images to the checker filter
626 typedef itk::CheckerBoardImageFilter< InternalImageType > CheckerBoardFilterType;
627 typename CheckerBoardFilterType::Pointer checkerFilter= CheckerBoardFilterType::New();
629 checkerFilter->SetInput1(inputFixedImage);
630 checkerFilter->SetInput2(internalResampler->GetOutput());
631 typedef itk::ImageFileWriter< InternalImageType > InternalWriterType;
632 typename InternalWriterType::Pointer checkerWriter = InternalWriterType::New();
633 checkerWriter->SetFileName(m_ArgsInfo.checker_after_arg);
634 checkerWriter->SetInput( checkerFilter->GetOutput() );
635 checkerWriter->Update();
639 //============================================================================
641 //============================================================================
642 if (m_ArgsInfo.checker_before_given) {
643 //To display correctly the checkerboard image, the intensities must lie in the same range (normalized)
644 //We write the image in the internal image type
645 //We pass the normalized images to the checker filter
646 typedef itk::CheckerBoardImageFilter< InternalImageType > CheckerBoardFilterType;
647 typename CheckerBoardFilterType::Pointer checkerFilter= CheckerBoardFilterType::New();
649 checkerFilter->SetInput1(inputFixedImage);
650 checkerFilter->SetInput2(inputMovingImage);
651 typedef itk::ImageFileWriter< InternalImageType > InternalWriterType;
652 typename InternalWriterType::Pointer checkerWriter = InternalWriterType::New();
653 checkerWriter->SetFileName(m_ArgsInfo.checker_before_arg);
654 checkerWriter->SetInput( checkerFilter->GetOutput() );
655 checkerWriter->Update();
659 //============================================================================
661 //============================================================================
662 if (m_ArgsInfo.after_given) {
663 typedef itk::SubtractImageFilter< InternalImageType, FixedImageType,FixedImageType > DifferenceImageFilterType;
664 typename DifferenceImageFilterType::Pointer differenceAfterFilter= DifferenceImageFilterType::New();
666 differenceAfterFilter->SetInput1(fixedImage);
667 differenceAfterFilter->SetInput2(resampler->GetOutput());
669 // Prepare a writer to write the difference image
670 typedef itk::ImageFileWriter< FixedImageType > WriterType;
671 typename WriterType::Pointer differenceAfterWriter = WriterType::New();
672 differenceAfterWriter->SetFileName(m_ArgsInfo.after_arg );
673 differenceAfterWriter->SetInput( differenceAfterFilter->GetOutput() );
674 differenceAfterWriter->Update();
678 //============================================================================
679 // Difference Before?
680 //============================================================================
681 if (m_ArgsInfo.before_given) {
682 typedef itk::CastImageFilter< InternalImageType,FixedImageType > CastFilterType;
683 typename CastFilterType::Pointer caster = CastFilterType::New();
684 caster->SetInput( movingImage );
686 typedef itk::SubtractImageFilter< InternalImageType, FixedImageType, FixedImageType > DifferenceImageFilterType;
687 typename DifferenceImageFilterType::Pointer differenceBeforeFilter= DifferenceImageFilterType::New();
690 differenceBeforeFilter->SetInput1(fixedImage);
691 differenceBeforeFilter->SetInput2(caster->GetOutput());
693 // Prepare a writer to write the difference image
694 typedef itk::ImageFileWriter< FixedImageType > WriterType;
695 typename WriterType::Pointer differenceBeforeWriter = WriterType::New();
696 differenceBeforeWriter->SetFileName(m_ArgsInfo.before_arg);
697 differenceBeforeWriter->SetInput( differenceBeforeFilter->GetOutput() );
698 differenceBeforeWriter->Update();
704 //====================================================================
706 #endif //#define CLITKAFFINEREGISTRATIONCGENERICFILTER_CXX