The interaction between RGB color space and YCbCr color space

YCbCr color space is used in face detection, so the conversion of RGB and YCBCR color space is necessary. In the following formula, the values of the RGB and YCBCR components are in the range of 0-255.

RGB Go to YCbCr:

Float y= (COLOR.R * 0.256789 + color.g * 0.504129 + color.b * 0.097906) + 16.0;

Float cb= (COLOR.R *-0.148223 + color.g * -0.290992 + color.b * 0.439215) + 128.0;

Float cr= (COLOR.R * 0.439215 + color.g * -0.367789 + color.b *-0.071426) + 128.0;

YCbCr go to RGB:

R ' = 1.164* (Y ' -16) + 1.596* (Cr '-128)

G ' = 1.164* (Y ' -16)-0.813* (Cr ' -128)-0.392* (CB '-128)

B ' = 1.164* (Y ' -16) + 2.017* (Cb '-128)

The interaction between RGB color space and YCbCr color space