PictureEffects Xojo and Real Studio Plugin
GrayScaleType Module
Constants for GrayScaleType that can be used with the GrayScale effect.
module GrayScaleType
Constants
NTSC_PAL = 0
NTSC and PAL.
ITU_R = 1
A standard known as ITU-R
AVERAGE = 2
A simple average of the colors.
WEIGHTEDAVERAGE = 3
A weighted average of the colors where blue has more weight than green.
GrayScaleType Module 
NTSC_PAL = 0ITU_R = 1AVERAGE = 2WEIGHTEDAVERAGE = 3