public YCBCRNode[,] ConvertRGBToYCbCr(RGBChannels channels)
{
YCBCRNode[,] yCbCrValues = new YCBCRNode[channels.R.GetLength(1), channels.R.GetLength(0)];
for (int x = 0; x < channels.R.GetLength(0); x++)
{
for (int y = 0; y < channels.R.GetLength(1); y++)
{
double fY = Math.Round((0.0 + (0.299 * channels.R[y, x]) + (0.587 * channels.G[y, x]) + (0.114 * channels.B[y, x])), 0);
double fCB = Math.Round((128 + (-0.1768736 * channels.R[y, x]) + (-0.331264 * channels.G[y, x]) + (0.5 * channels.B[y, x])), 0);
double fCR = Math.Round((128 + (0.5 * channels.R[y, x]) + (-0.418688 * channels.G[y, x]) + (-0.081312 * channels.B[y, x])), 0);
yCbCrValues[y, x] = new YCBCRNode(fY, fCB, fCR);
}
}
return(yCbCrValues);
}
public RGBChannels ConvertYCbCrToRGB(YCBCRNode[,] values)
{
RGBChannels channels = new RGBChannels(values.GetLength(0), values.GetLength(1));
for (int x = 0; x < channels.Width; x++)
{
for (int y = 0; y < channels.Height; y++)
{
YCBCRNode node = values[y, x];
double r, g, b = 0.0;
r = node.Y + 1.40200 * (node.Cr - 0x80);
g = node.Y - 0.34414 * (node.Cb - 0x80) - 0.71414 * (node.Cr - 0x80);
b = node.Y + 1.77200 * (node.Cb - 0x80);
channels.R[y, x] = Math.Clamp(r, 0, 255);
channels.G[y, x] = Math.Clamp(g, 0, 255);
channels.B[y, x] = Math.Clamp(b, 0, 255);
}
}
return(channels);
}