Changing the hue and saturation of the image by RGB or YUV
He had tried to turn into BGR HSV, and then change the S component, but the effect is very poor, here is what I found in the papers of others, your reference
1. By changing the saturation of the YUV image, here typically range r is (0, 5), is expressed as 1 if the image data is not changed
Formula is as follows:
Y = Y;
U = U*r;
V = V * r;
Note: This U ~ (-128- 128), V ~ (-128-128) if your UV range is 0-255 or 16-240, then you need to subtract 128.
Renderings:
2. By changing the range of the saturation degree r RGB image is generally (-1, + 5)
official:
B = B + (B-(R+G)/2)*r;
G = G + (G-(R+B)/2)*r;
R = R + (R-(B+G)/2)*r;
Renderings:
3. Change the image by yuv hue (Cb is, U, Cr namely V) UV∈ (-128,128)
Changing the hue and saturation of the image by RGB or YUV
