[Insight-users] Get the data buffer of itk::Image?

[Feng Zhuge]

I am pretty new to this wonderful package and any help
is greatly appreciated. 

Some 3rd party software, e.g., fftw, will take a data
buffer as its input and output. Like, double *
Some3rdPartyProcess(double *inputBuffer);

Therefore, the iterator in ITK does not work for me
well. 

Is there a way I can get an itk::Image object's
buffer?
I found a m_Buffer member in Image but I am not sure
how safe it is to use it. 

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