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<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>Dear ITK users,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=±¼¸²><span lang=EN-US
style='font-size:10.0pt;font-family:±¼¸²;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>I am trying to use ITK for a registration process. <font
color=navy><span style='color:navy'> </span></font>Using
VersorRigid3DTransform (itk::</span></font><span lang=EN-US> </span><font
face=±¼¸²><span lang=EN-US style='font-family:±¼¸²'>VersorRigid3DTransform), a
series of exam success, but other is fail.<font color=navy><span
style='color:navy'> </span></font>Source code is below...<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>=========== source start ===================<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>UINT ThreadStartRegistration(LPVOID infoIn)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>{<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
CMyDoc* pDoc = (CMyDoc*)infoIn;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
CMyView* pAutoView = pDoc->GetMyView();<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
typedef float InternalPixelType;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
typedef
itk::Image<InternalPixelType,3>
InternalImageType;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
typedef
itk::VersorRigid3DTransform<double>
TransformType;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
typedef
itk::VersorRigid3DTransformOptimizer
OptimizerType;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
typedef
itk::MattesMutualInformationImageToImageMetric<InternalImageType,InternalImageType>
MetricType;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
typedef itk::LinearInterpolateImageFunction<InternalImageType,double>
InterpolatorType;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
typedef
itk::ImageRegistrationMethod<InternalImageType,InternalImageType>
RegistrationType;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
MetricType::Pointer
metric = MetricType::New();<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
OptimizerType::Pointer
optimizer = OptimizerType::New();<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
InterpolatorType::Pointer interpolator =
InterpolatorType::New();<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
RegistrationType::Pointer registration =
RegistrationType::New();<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
TransformType::Pointer
transform = TransformType::New();<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
unsigned long iNumSamples = <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
pDoc->m_sizePrimary3DImage[0]*pDoc->m_sizePrimary3DImage[1]*pDoc->m_sizePrimary3DImage[2]*2/100;
// 3 percentage of total pixels<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
metric->SetNumberOfSpatialSamples(iNumSamples);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
registration->SetMetric(metric);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
registration->SetOptimizer(optimizer);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
registration->SetInterpolator(interpolator);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
registration->SetTransform( transform );<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
typedef itk::NormalizeImageFilter<ImageType,InternalImageType>
NormalizeFilterType;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
NormalizeFilterType::Pointer fixedNormalizer = NormalizeFilterType::New();<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
NormalizeFilterType::Pointer movingNormalizer = NormalizeFilterType::New();<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
fixedNormalizer->SetInput(pDoc->m_Primary3DImage.GetPointer());<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
movingNormalizer->SetInput(pDoc->m_Secondary3DImage.GetPointer());<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
registration->SetFixedImage(fixedNormalizer->GetOutput());<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
registration->SetMovingImage(movingNormalizer->GetOutput());<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
registration->SetFixedImageRegion(pDoc->m_Primary3DImage.GetPointer()->GetBufferedRegion());<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
itk::Point<double,3> initialCenter =
pDoc->m_transformMomentCenter->GetCenter(); <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
itk::Vector<double,3> initialTranslation =
pDoc->m_3DTransformManualMode->GetOffset();<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
transform->SetCenter(initialCenter);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
transform->SetTranslation(initialTranslation);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
typedef TransformType::VersorType VersorType;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
typedef VersorType::VectorType VectorType;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
VersorType rotation;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
VectorType axis;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
axis[0] = 0.0;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
axis[1] = 0.0;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
axis[2] = 1.0;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
const double angle = 0;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
rotation.Set(axis,angle);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
transform->SetRotation(rotation);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
registration->SetInitialTransformParameters(transform->GetParameters());<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
typedef
OptimizerType::ScalesType
OptimizerScalesType;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
OptimizerScalesType optimizerScales(transform->GetNumberOfParameters());<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
const double translationScale = <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
1.0 / (10.0 *
pDoc->m_vSpacingPrimary3DImage[0]*pDoc->m_sizePrimary3DImage[0]);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
optimizerScales[0] = 1.0;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
optimizerScales[1] = 1.0;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
optimizerScales[2] = 1.0;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
optimizerScales[3] = translationScale;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
optimizerScales[4] = translationScale;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
optimizerScales[5] = translationScale;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
optimizer->SetScales(optimizerScales);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
optimizer->SetMaximumStepLength(1.0); <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
optimizer->SetMinimumStepLength(0.005);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
optimizer->SetNumberOfIterations(50);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
CCommandIterationUpdate::Pointer observer = CCommandIterationUpdate::New();<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
observer->SetDocument(pDoc);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
optimizer->AddObserver( itk::IterationEvent(), observer );<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
try<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
{<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
registration->StartRegistration(); <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
}<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
catch( itk::ExceptionObject & err ) <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
{ <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
TRACE("ExceptionObject caught !\n");<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
return 0;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
} <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>
return 0;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>}<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>=========== source end ===================<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=±¼¸²><span lang=EN-US style='font-size:10.0pt;
font-family:±¼¸²'>I suspect pixel spacing of series. A case of success series is
both have same pixel spacing, but other is different.<font color=navy><span
style='color:navy'> What do you think about it?</span></font><o:p></o:p></span></font></p>
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