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Declaration:function RGBtoGrayColor (r, g, b: integer): TColor;

The function RGBtoGrayColor transforms a color defined in the RGB color space by the parameters r (red, valid range: 0..255), g (green, valid range: 0..255), and b (blue, valid range: 0..255) into gray of corresponding intensity.

Hint: Please note that the gray color is calculated according to common television standards.

Last Update: 2019-Jul-19