public static List <VoiDataLut> Create(IDicomElementProvider elementProvider)
{
if (elementProvider == null)
{
throw new ArgumentNullException("elementProvider");
}
DicomElementSq voiLutSequence = elementProvider[DicomTags.VoiLutSequence] as DicomElementSq;
if (voiLutSequence == null)
{
return(new List <VoiDataLut>());
}
DicomElementSq modalityLutSequence = elementProvider[DicomTags.ModalityLutSequence] as DicomElementSq;
int pixelRepresentation = GetPixelRepresentation(elementProvider);
if (IsValidAttribute(modalityLutSequence))
{
return(Create(voiLutSequence, modalityLutSequence, pixelRepresentation));
}
DicomElement rescaleInterceptElement = elementProvider[DicomTags.RescaleIntercept];
if (IsValidAttribute(rescaleInterceptElement))
{
double rescaleSlope = GetRescaleSlope(elementProvider);
double rescaleIntercept = rescaleInterceptElement.GetFloat64(0, 0);
int bitsStored = GetBitsStored(elementProvider);
return(Create(voiLutSequence, bitsStored, pixelRepresentation, rescaleSlope, rescaleIntercept));
}
return(Create(voiLutSequence, pixelRepresentation));
}
private static double GetRescaleSlope(IDicomElementProvider elementProvider)
{
DicomElement rescaleSlopeElement = elementProvider[DicomTags.RescaleSlope];
if (rescaleSlopeElement == null)
{
return(1.0);
}
else
{
return(rescaleSlopeElement.GetFloat64(0, 1));
}
}
