#include "itkImageIteratorWithIndex.h"
#include "itkBinaryMorphologicalOpeningImageFilter.h"
#include "itkBinaryMorphologicalClosingImageFilter.h"
+#include "itkConstantPadImageFilter.h"
//--------------------------------------------------------------------
template <class ImageType>
StartNewStep("Set background to initial image");
working_input = SetBackground<ImageType, MaskImageType>
(working_input, patient, GetPatientMaskBackgroundValue(), -1000, true);
+
+ // Pad images with air to prevent patient touching the image border
+ static const unsigned int Dim = ImageType::ImageDimension;
+ typedef itk::ConstantPadImageFilter<ImageType, ImageType> PadFilterType;
+ typename PadFilterType::Pointer padFilter = PadFilterType::New();
+ padFilter->SetInput(working_input);
+ padFilter->SetConstant(-1000);
+ typename ImageType::SizeType bounds;
+ for (unsigned i = 0; i < Dim - 1; ++i)
+ bounds[i] = 1;
+ bounds[Dim - 1] = 0;
+ padFilter->SetPadLowerBound(bounds);
+ padFilter->SetPadUpperBound(bounds);
+ padFilter->Update();
+ working_input = padFilter->GetOutput();
+
StopCurrentStep<ImageType>(working_input);
PrintMemory(GetVerboseMemoryFlag(), "After set bg"); // OK, additional mem = 0
if (m_Seeds.size() != 0) { // if ==0 ->no trachea found
if (GetAutoCrop())
trachea = clitk::AutoCrop<MaskImageType>(trachea, GetBackgroundValue());
+ else
+ {
+ // Remove Padding region
+ typedef itk::CropImageFilter<MaskImageType, MaskImageType> CropFilterType;
+ typename CropFilterType::Pointer cropFilter = CropFilterType::New();
+ cropFilter->SetInput(trachea);
+ cropFilter->SetLowerBoundaryCropSize(bounds);
+ cropFilter->SetUpperBoundaryCropSize(bounds);
+ cropFilter->Update();
+ trachea = cropFilter->GetOutput();
+ }
StopCurrentStep<MaskImageType>(trachea);
PrintMemory(GetVerboseMemoryFlag(), "after delete trachea");
}
PrintMemory(GetVerboseMemoryFlag(), "Before Autocropfilter");
if (GetAutoCrop())
working_mask = clitk::AutoCrop<MaskImageType>(working_mask, GetBackgroundValue());
+ else
+ {
+ // Remove Padding region
+ typedef itk::CropImageFilter<MaskImageType, MaskImageType> CropFilterType;
+ typename CropFilterType::Pointer cropFilter = CropFilterType::New();
+ cropFilter->SetInput(working_mask);
+ cropFilter->SetLowerBoundaryCropSize(bounds);
+ cropFilter->SetUpperBoundaryCropSize(bounds);
+ cropFilter->Update();
+ working_mask = cropFilter->GetOutput();
+ }
StopCurrentStep<MaskImageType>(working_mask);
//--------------------------------------------------------------------
PrintMemory(GetVerboseMemoryFlag(), "After count label");
// Decompose the first label
- static const unsigned int Dim = ImageType::ImageDimension;
if (initialNumberOfLabels<2) {
// Structuring element radius
typename ImageType::SizeType radius;
//--------------------------------------------------------------------
template <class ImageType>
-void
+void
clitk::ExtractLungFilter<ImageType>::
SearchForTrachea()
{
double volume = 0.0;
int skip = GetNumberOfSlicesToSkipBeforeSearchingSeed();
while (!stop) {
- stop = SearchForTracheaSeed(skip);
- if (stop) {
+ stop = true;
+ if (SearchForTracheaSeed(skip)) {
TracheaRegionGrowing();
volume = ComputeTracheaVolume()/1000; // assume mm3, so divide by 1000 to get cc
if (GetWriteStepFlag()) {
if (GetVerboseStepFlag()) {
std::cout << "\t Found trachea with volume " << volume << " cc." << std::endl;
}
- stop = true;
}
else {
if (GetVerboseStepFlag()) {
// empty the list of seed
m_Seeds.clear();
}
+ if (skip > 0.5 * working_input->GetLargestPossibleRegion().GetSize()[2]) {
+ // we want to skip more than a half of the image, it is probably a bug
+ std::cerr << "2 : Number of slices to skip to find trachea too high = " << skip << std::endl;
+ stop = true;
+ }
}
else {
stop = true;