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ilut [-a] [-l type] [-d format] [-p white black] [-f in_start in_end] [-t out_start out_end] input_file lut_file
Specifies the type of LUT.
R, G, B or A
1 LUT for the specified channel.
3 LUTs, 1 each for R, G and B.
4 LUTs, 1 each for R, G, B and A.
1 LUT for all of R, G and B.
1 LUT for all of R, G, B and A. (default)
Autodetect the type of LUT based on the # of channels.
The format of the LUT: i8, i16, i32 or f32.
Specifies the black/white points of the format.
The 'from' range of the LUT data (default 0 to 1).
The 'to' range of the LUT data (default 0 to 1).
ilut takes a channel file and converts it into a lookup table suitable for displaying images. A lookup table (LUT) transforms one colorspace to another. It
can also be used to convert one LUT file to another type (such as .lut to
Common channel formats include .clip, .bclip, .chan and .chn. Common LUT formats include .lut, .blut, and .idx. When converting a LUT file to another LUT format, all the command line options are ignored; they are only required to fill in the missing information when converting from a channel file.
The filename can also be one of the following symbolic names.
Create an sRGB LUT.
Create an REC709 LUT.
Create a LUT with gamma of
# (ie, gamma=2.2).