imColorRGB2Luma

Converts R'G'B' to Y' (all nonlinear). \n \verbatim Y' = 0.299 *R' + 0.587 *G' + 0.114 *B' \endverbatim * \ingroup color

version(IM)

pure nothrow @nogc @safe

T

imColorRGB2Luma

(

T

)

(

const T R

,

const T G

,

const T B

)

if (

isNumeric!T

)

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