You can use ColorHelper library for this:
using ColorHelper;
RGB rgb = new RGB(100, 100, 100);
YIQ yiq = ColorConverter.RgbToYiq(rgb);
Links:
Question
I am trying to convert. This is my code:
private void RGBtoYIQbutton_Click(object sender, EventArgs e)
{
int[] vector_yiq = new int[3];
double r, g, b, y, i, q;
Bitmap bmp = new Bitmap(pictureBox1.Image);
for (int x = 0; x < bmp.Width; x++)
{
for (int y = 0; y < bmp.Height; y++)
{
Color clr = bmp.GetPixel(x, y);
r = (double)clr.R / 255;
g = (double)clr.G / 255;
b = (double)clr.B / 255;
y = Convert.ToInt32((0.299 * r + 0.587 * g + 0.114 * b) * 100);
i = Convert.ToInt32((0.596 * r - 0.274 * g - 0.322 * b) * 100);
if (i < 0)
i = Convert.ToInt32((0.596 * r - 0.274 * g - 0.322 * b + 0.5957) * 100);
q = Convert.ToInt32((0.211 * r - 0.522 * g + 0.311 * b ) * 100);
if (q < 0)
q = Convert.ToInt32((0.211 * r - 0.522 * g + 0.311 * b + 0.5226) * 100);
Color pixelColor;
pixelColor = Color.FromArgb(y, i, q);
bmp.SetPixel(x, y, pixelColor);
}
}
pictureBox1.Image = bmp;
I know that the Y parameter has the range [0,1], the I parameter has the range [-0.523,0.523], and the Q parameter has the range [-0.596,0.596]. Also I know that R, G and B have the range [0,255]. I am using "if" to get positive values for G and B. Because of this I getting wrong image. How can I do this conversion?
No correct solution
OTHER TIPS
You can use ColorHelper library for this:
using ColorHelper;
RGB rgb = new RGB(100, 100, 100);
YIQ yiq = ColorConverter.RgbToYiq(rgb);
Links: