jit.rgb2luma Converts RGB to monochrome (luminance)

The jit.rgb2luma object converts a 4-plane char ARGB (alpha, red, green, blue) matrix into a 1-plane char monochrome matrix containing the luminosity of the original matrix using the equation L = (.299 * R value) + (.587 * G value) + (.114 * B value).

Matrix Operator: in[1] out[1]
Name IOProc Planelink Typelink Dimlink Plane Dim Type
in n/a n/a n/a n/a n/a n/a n/a
out n/a no yes yes 1 all char

Attributes:
Name Type Description
ascale float The alpha scaling factor (default = 0.)
rscale float The red scaling factor (default = 0.299)
gscale float The green scaling factor (default = 0.587)
bscale float The blue scaling factor (default = 0.114)

Example:

See Also:
jit.colorspace, jit.hue, jit.hsl2rgb, jit.rgb2hsl, jit.traffic