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Diffstat (limited to 'doc/filters.texi')
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diff --git a/doc/filters.texi b/doc/filters.texi index a10f5e71d1..b309e8c737 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -8540,6 +8540,25 @@ Adjust red, green, blue and alpha output white point. Allowed ranges for options are @code{[0, 1.0]}. Defaults are @code{1}. Output levels allows manual selection of a constrained output level range. + +@item preserve +Set preserve color mode. The accepted values are: +@table @samp +@item none +Disable color preserving, this is default. +@item lum +Preserve luminance. +@item max +Preserve max value of RGB triplet. +@item avg +Preserve average value of RGB triplet. +@item sum +Preserve sum value of RGB triplet. +@item nrm +Preserve normalized value of RGB triplet. +@item pwr +Preserve power value of RGB triplet. +@end table @end table @subsection Examples |