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© 2014 Digital Vision
UM-2014.1-07
3D LUT File Format
LUT format v3 extends support to High Dynamic Range (HDR) images (e.g.
OpenEXR) and allows the transformation of extended range inputs. This
means LUT data values can exist outside the range 0.0 to 1.0.
Example LUT files are distributed in the folder :
C:\Phoenix\2014_1\root\cms\
In addition, example C programs are included to generate sample
LUT files. These are found in the Example Code folder alongside
some sample program outputs.
v2 format code example :
Example Code\Lut3D.cpp
v3 format code example :
Example Code\Lut3Dv3.cpp
The Nucoda 3D LUT file format is ASCII text with a .cms file extension.
The file is composed of :
1D x 3 floating point LUT and a
3D x 3 floating point LUT
The LUT file can contain a 1D LUT, a 3D LUT or both. If both, the 1D
LUT definition should be before the 3D LUT definition.
Setup
The following parameters are used in the LUT file before the LUT data is
defined :
TITLE
Format : STRING
LUT title. Use quotes if the title contains spaces.
Example :
TITLE "Title of LUT"