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WIP: Real world value mapping #169

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WIP: Real world value mapping #169

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ba9fab5
attempt for RealWorldValueMapping rescale support in Wrapper
Sep 27, 2012
242ae83
has_key not working???, workaround
Mar 26, 2013
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8 changes: 8 additions & 0 deletions nibabel/nicom/dicomwrappers.py
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Original file line number Diff line number Diff line change
Expand Up @@ -356,6 +356,14 @@ def _scale_data(self, data):
# depending on pydicom and dicom files, values might need casting from Decimal to float
scale = float(self.get('RescaleSlope', 1))
offset = float(self.get('RescaleIntercept', 0))
if scale == 1 and offset == 0:
mpseq = self.get('RealWorldValueMappingSequence',None)
if mpseq == None: # compatibility with pydicom < 0.9.7 ????
mpseq = self.get('RealWorldValueMappings',None)
if mpseq != None and len(mpseq)>0:
mpseq = mpseq[0]
scale = mpseq.get('RealWorldValueSlope',1)
offset = mpseq.get('RealWorldValueIntercept',0)
# a little optimization. If we are applying either the scale or
# the offset, we need to allow upcasting to float.
if scale != 1:
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