[vtkusers] Get WindowLevel and WindowWidth from DICOM

Alex Liu tehsunnliu at yahoo.com
Tue Jan 10 22:55:34 EST 2017

Hi all.
I was trying to get WindowLevel(WL) and WindowWidth(WW) from DICOM file but
I couldn't find any way.

I opened this file in Sante DICOM Viewer and it shows WW: 40 and WL: 200

I tried using vtkImageMapToWindowLevelColors to get windowLevel and
windowWidth but the width and the level are different from the image shown
above for the same file.
the result I get is WW = 255 and WL = 127.5
Is there anyway I can get the windowlevel(WL) and windowwidth(WW)? 
Please help.
Thank you.

Alex Liu
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