Keywords:  LUT, Look Up Table

LUT is the acronym for Look Up Table.  This is a table with x and y coordinates used to map data into an other domain.

Commonly used LUT's are:

  • Modality LUT for mapping acquired data into a modality independent domain, e.g. as sent by a CR device.
  • VOI LUT, which does not always exist of a LUT but also can be represented by a WW and LVL (in case of linear LUT)
  • Presentation LUT, typically used for printers to adjust the print quality and/or have it comply with the GSDF.
  • In many cases the LUT is specified as "IDENTITY" which means that there is a 1:1 relationship between the input and output values.
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