It is interesting even if the formula RGB to luminance seems a bit difficult to extract. Thank you Marco 2010/11/12 Juergen Lilien <jp.lilien@xxxxxxxxxxxxxx>: > Marco Noldin wrote: > >> Dicom gamma > > Do you know the following publication? > > Digital Imaging and Communications in Medicine (DICOM) > Part 14: Grayscale Standard Display Function > > ftp://medical.nema.org/medical/dicom/2009/09_14pu.pdf > > Regards, Juergen > >