[Dcmlib] PixelPaddingValue

[Jean-Pierre Roux]

Aris Basic wrote:

> Just a question shouldnt  gdcm replace PixelPadding value with the 
> either black or something else (according do DICOM std) ?

Hi, Aris.
What do you mean by "according do DICOM std"?

The PPV (0028,0120) is used mostly to fill in the corners of round 
images , just to tell the user no to loose time making computations on 
those meaningless pixels . Any pixels in the image that have this value 
are not to be treated as meaningful objects - but as background color.

It's up to the user to deal with this information, don't you think so?

Well ...
Probabely 'vtkgdcmViewer' doesn't deal with it, that can be a problem if 
the PPV is a  very high value (image will be displayed very dark, the 
first time)
But vtkgdcmViewer is just a little (*very* usefull, but little) tool , 
side of gdcm.

Jean-Pierre

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