[Insight-users] help with ImageRegionIterator

[Renaud Isabelle]

Hi,  
 
Can someone tell me the difference between using GetRequestedRegion() and GetBufferedRegion().
 
I'm implemented a simple function. I have no error at building but always an error at execution such as Error in memory, DAMAGE AFTER NORMAL BLOCK. I took a look on the web to check out the meaning: it seems that I am overwriting in memory. 
 
Maybe it comes from my iterators. Here is what I did. 
 
Please help,
 
Isa
 
  ImageType3D::Pointer outputImage = ImageType3D::New();
  
  ImageType3D::IndexType start;
  start[0] = 0; // first index on X
  start[1] = 0; // first index on Y
  start[2] = 0; // first index on Z
 
  ImageType3D::SizeType size;
  size[0] = width; // size along X
  size[1] = height; // size along Y
  size[2] = iNumFrames; // size along Z
 
  ImageType3D::RegionType outputRegion;
  outputRegion.SetSize( size );
  outputRegion.SetIndex( start );
  outputImage->SetRegions(outputRegion);
  outputImage->SetSpacing(imageInitiale->GetSpacing());
  outputImage->SetOrigin(imageInitiale->GetOrigin());
  outputImage->Allocate();
 
  typedef itk::ImageRegionConstIterator<ImageType3D> ConstIteratorType;
  ConstIteratorType inputIt(imageInitiale, imageInitiale->GetBufferedRegion());
 
  typedef itk::ImageRegionIterator<ImageType3D> IteratorType;
  IteratorType outputIt(outputImage, imageInitiale->GetBufferedRegion());
 
  inputIt.GoToBegin();
  outputIt.GoToBegin();
 
  float** MatriceImgR=fmatrix_allocate_2d(height,width);
  float** MatriceImgI=fmatrix_allocate_2d(height,width);
  
  /*Initialisation a zero de toutes les matrices */
  for(int i=0;i<height;i++) 
    for(int j=0;j<width;j++) 
      {
    MatriceImgI[i][j]=0.0;
    MatriceImgR[i][j]= (float)(inputIt.Get());
    ++inputIt;
      }
  
  /*FFT*/
  fft2D(MatriceImgR,MatriceImgI,height,width); 

		
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