public static YiqImage FromRgb(RgbImage image)
{
int width = image.Width;
int height = image.Height;
YiqImage result = new YiqImage(width, height);
Matrix m = new Matrix(3, 3);
m.Init(0.299, 0.587, 0.114, 0.596, -0.274, -0.321, 0.211, -0.526, 0.311);
Matrix rbg = new Matrix(3, 1);
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
rbg.Init(image.R[x, y], image.G[x, y], image.B[x, y]);
Matrix yiq = m * rbg;
//result.YIQ[x, y] = new YIQ(yiq[0, 0], yiq[1, 0], yiq[2, 0]);
result.Y[x, y] = yiq[0, 0];
result.Ic[x, y] = yiq[1, 0];
result.Qc[x, y] = yiq[2, 0];
}
}
return(result);
}
public static RgbImage FromYiq(YiqImage image)
{
int width = image.Width;
int height = image.Height;
RgbImage result = new RgbImage(width, height);
Matrix m = new Matrix(3, 3);
m.Init(1, 0.956, 0.623, 1, -0.272, -0.648, 1, -1.105, 1.705);
Matrix yiq = new Matrix(3, 1);
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
yiq.Init(image.Y[x, y], image.Ic[x, y], image.Qc[x, y]);
Matrix rbg = m * yiq;
double nr = Normalize(rbg[0, 0]);
double ng = Normalize(rbg[1, 0]);
double nb = Normalize(rbg[2, 0]);
//result.RGB[x, y] = new RGB(nr, ng, nb);
result.R[x, y] = nr;
result.G[x, y] = ng;
result.B[x, y] = nb;
}
}
return(result);
}
public RgbImage GetRgb()
{
if (rgb == null)
{
rgb = RgbImage.FromBitmap(Image);
}
return(rgb);
}
public async Task <RgbImage> GetRgbAsync()
{
if (rgb == null)
{
rgb = await RgbImage.FromBitmapAsync(Image);
}
return(rgb);
}
public static RgbImage FromBitmap(Bitmap image)
{
int width = image.Width;
int height = image.Height;
RgbImage result = new RgbImage(width, height);
Color pixel;
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
pixel = image.GetPixel(x, y);
//result.RGB[x, y] = new RGB(pixel.R, pixel.G, pixel.B);
result.R[x, y] = pixel.R;
result.G[x, y] = pixel.G;
result.B[x, y] = pixel.B;
}
}
return(result);
}
public static async Task <YiqImage> FromRgbAsync(RgbImage image)
{
return(await Task.Run(() => FromRgb(image)));
}
public static YiqImage FromBitmap(Bitmap image)
{
RgbImage rgb = RgbImage.FromBitmap(image);
return(YiqImage.FromRgb(rgb));
}
public static async Task <YiqImage> FromBitmapAsync(Bitmap image)
{
RgbImage rgb = await RgbImage.FromBitmapAsync(image);
return(await YiqImage.FromRgbAsync(rgb));
}
public Bitmap ToBitmap()
{
RgbImage rgb = RgbImage.FromYiq(this);
return(rgb.ToBitmap());
}
public async Task <Bitmap> ToBitmapAsync()
{
RgbImage rgb = await RgbImage.FromYiqAsync(this);
return(await rgb.ToBitmapAsync());
}
