[Insight-users] Difference between GetBufferPointer and GetImportPointer

[李健]

Dear all:

 

When I want to get the image data from the output of a itk filter, what's the difference between using

"filter->GetOutput()->GetBufferPointer()" and using "filter->GetOutput()->GetPixelContainer()->GetImportPointer()"?

 

I found following description about them in ImportImageContainer calss in itk documentation:

GetBufferPointer:  Return a pointer to the beginning of the buffer. This is used by the image iterator class. 

GetImportPointer: get the pointer from which the image data is imported.

But I'm still confused. What's the difference between them? Which one I should use to get the image data from itk?

 

Thanks a lot.

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