RGB To YCbCr

This algorithm converts RGB color model to YCbCr color space.

• C#
• VB.Net
• C
• C++
• PHP

									struct RGB
{
	unsigned char R;
	unsigned char G;
	unsigned char B;
};

struct YCbCr
{
	float Y;
	float Cb;
	float Cr;
};

struct YCbCr RGBToYCbCr(struct RGB rgb) {
	float fr = (float)rgb.R / 255;
	float fg = (float)rgb.G / 255;
	float fb = (float)rgb.B / 255;

	struct YCbCr ycbcr;
	ycbcr.Y = (float)(0.2989 * fr + 0.5866 * fg + 0.1145 * fb);
	ycbcr.Cb = (float)(-0.1687 * fr - 0.3313 * fg + 0.5000 * fb);
	ycbcr.Cr = (float)(0.5000 * fr - 0.4184 * fg - 0.0816 * fb);

	return ycbcr;
}
								

Example

									struct RGB data = { 82, 0, 87 };
struct YCbCr value = RGBToYCbCr(data);
								

Output

									Y: 0.135181576
Cb: 0.116339609
Cr: 0.132944316