typename PatchExtractor<PValue>::MaskType::Pointer PatchExtractor<PValue>::ExtractMask()
{
ContIndexType startIndex;
for(unsigned int i = 0; i < 2; i++)
{
startIndex[i] = m_Center[i] - (m_Size[i] / 2.0);
}
startIndex[2] = 0;
typename ImageType::IndexType properIndex;
for(unsigned int i = 0; i < 3; i++)
{
properIndex[i] = round(startIndex[i]);
}
for(unsigned int i = 0; i < 2; i++)
{
if(properIndex[i] < 0) properIndex[i] = 0;
if((m_Size[i] + properIndex[i]) > (m_Image->GetLargestPossibleRegion().GetSize()[i]-1))
{
m_Size[i] = m_Image->GetLargestPossibleRegion().GetSize()[i]-1-properIndex[i];
}
}
MaskType::RegionType region;
region.SetIndex(properIndex);
m_Size[2] = 1;
region.SetSize(m_Size);
MaskType::Pointer mask = MaskType::New();
mask->SetDirection(m_Image->GetDirection());
mask->SetSpacing(m_Image->GetSpacing());
mask->SetOrigin(m_Image->GetOrigin());
mask->SetRegions(m_Image->GetLargestPossibleRegion());
mask->Allocate();
mask->FillBuffer(0);
itk::ImageRegionIterator<MaskType> imageIt(mask, region);
while(!imageIt.IsAtEnd())
{
imageIt.Set(m_MaskValue);
++imageIt;
}
return mask;
}
