[Insight-users] Trouble with getting the output of FastMarchingImageFilter

[秦安]

hi,luis and  itk users:

    when working with the FastMarchingImageFilter, i try to get the output time crossing image. i write the simple codes as below
"
    InternalImageType::Pointer internalImage3 = InternalImageType::New();
	internalImage3 = fastMarching->GetOutput();
	ConstIteratorType constIterator3(internalImage3,internalImage3->GetRequestedRegion());

	float timedata[imageWidth*imageHeight];
    InternalImageType::PixelType pixel;
    int i;
	for(constIterator3.GoToBegin(),i=0;!constIterator3.IsAtEnd(); ++constIterator3,i++)
	{
		pixel = constIterator3.Get();
		timedata[i] = (float)pixel; 
	}
"
     The whole image processing pipeline has been update successfully before, and the output binary images suggest the filters work well.
but when come to these codes, the pixel variable simply get noting.  
     Any help will be appreciated.     Thank you for your help and best regards!
                                                                               



	

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