+ if (m_ArgsInfo.seedRadius_given)
+ {
+ typedef itk::BinaryBallStructuringElement<PixelType, Dimension> BallType;
+ typename BallType::RadiusType r;
+
+ if (m_ArgsInfo.seedRadius_given == Dimension)
+ for (unsigned i = 0; i < Dimension; i++)
+ r[i] = m_ArgsInfo.seedRadius_arg[i];
+ else
+ r.Fill(m_ArgsInfo.seedRadius_arg[0]);
+
+ BallType ball;
+ ball.SetRadius(r);
+ ball.CreateStructuringElement();
+
+ typedef itk::ConstShapedNeighborhoodIterator<InputImageType> IteratorType;
+ IteratorType it(ball.GetRadius(),
+ input,
+ input->GetLargestPossibleRegion());
+#if ITK_VERSION_MAJOR < 4
+ typename BallType::ConstIterator nit;
+ unsigned idx = 0;
+ for (nit = ball.Begin(); nit != ball.End(); ++nit, ++idx)
+ {
+ if (*nit)
+ {
+ it.ActivateOffset(it.GetOffset(idx));
+ }
+ else
+ {
+ it.DeactivateOffset(it.GetOffset(idx));
+ }
+ }
+#else
+ it.CreateActiveListFromNeighborhood(ball);
+ it.NeedToUseBoundaryConditionOff();
+#endif
+
+ it.SetLocation(seeds[0]);
+ for (typename IteratorType::ConstIterator i = it.Begin(); !i.IsAtEnd(); ++i)
+ {
+ typename InputImageType::IndexType id = seeds[0] + i.GetNeighborhoodOffset();
+ if (id != seeds[0] && input->GetLargestPossibleRegion().IsInside(id))
+ seeds.push_back(id);
+ }
+ }