[Insight-users] Cast itkImage to Matlab emxArray

[Luca Tersi]

Hi,

I've included some algorithms developed with Matlab in my C++ software. The
Matlab algorithms were translated to C++ using Matlab Coder.
I've some images that have to be passed back and forth from the itk
pipeline to the Matlab algorithm that work with emxArray data type.
I've made the following methods in order to copy the data, but is there any
better and faster method? Moreover, is it better to use iterators or access
the buffer directly?

void
ImageProcessing::CopyItkToMatlabImage(ImageProcessing::RealImageType::Pointer
itkI, emxArray_real_T *matlabI)
{
  RealImageType::SizeType size = itkI->GetLargestPossibleRegion().GetSize();

  for (int ii=0; ii < size[0]; ++ii)
    for (int jj=0; jj < size[1]; ++jj)
      {
        matlabI->data[ii*size[0]+jj] =
(real_T)itkI->GetBufferPointer()[ii*size[0]+jj];
      }
}



void ImageProcessing::CopyMatlabToItkImage(emxArray_real_T * matlabI,
ImageProcessing::RealImageType::Pointer itkI)
{

  int32_T *size = matlabI->size;
  RealIteratorType out ( itkI, itkI->GetLargestPossibleRegion() );
  out.GoToBegin();

  for (int ii=0; ii < size[0]; ++ii)
    for (int jj=0; jj < size[1]; ++jj)
      {
        out.Set(matlabI->data[ii*size[0]+jj]);
        ++out;
      }
}

Thanks a lot

Luca

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