internal void SetImage(Color2[,] imagen)
{
this.LockImage();
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
this.SetPixel(x, y, imagen[y, x]);
}
}
this.UnlockImage();
}
public Info ConvertFromRgb(Color2 rgb)
{
Info yCbCr;
// Valores YCbCr
yCbCr.a = rgb.r * mRgbYcbcr[0, 0] + rgb.g * mRgbYcbcr[0, 1] + rgb.b * mRgbYcbcr[0, 2] - 128;
yCbCr.b = rgb.r * mRgbYcbcr[1, 0] + rgb.g * mRgbYcbcr[1, 1] + rgb.b * mRgbYcbcr[1, 2];
yCbCr.c = rgb.r * mRgbYcbcr[2, 0] + rgb.g * mRgbYcbcr[2, 1] + rgb.b * mRgbYcbcr[2, 2];
//if (ycbcr.a > 255f || ycbcr.b > 255f || ycbcr.c > 255f)
// Console.WriteLine("Valor ycbcr desbordado");
return yCbCr;
}
internal Color2[,] GetImage()
{
Color2[,] imagen = new Color2[height, width];
this.LockImage();
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
imagen[y, x] = this.GetPixel(x, y);
}
}
this.UnlockImage();
return imagen;
}
internal Info RgbToXyz(Color2 color)
{
Info rgb;
Info xyz;
// Valores rgb lineales [0, 1]
//rgb.a = (float)Math.Pow(color.R / 255.0, 2.2);
//rgb.b = (float)Math.Pow(color.G / 255.0, 2.2);
//rgb.c = (float)Math.Pow(color.B / 255.0, 2.2);
rgb.a = lutPow[color.r];
rgb.b = lutPow[color.g];
rgb.c = lutPow[color.b];
// Valores xyz
xyz.a = rgb.a * msRgbXyz[0, 0] + rgb.b * msRgbXyz[0, 1] + rgb.c * msRgbXyz[0, 2];
xyz.b = rgb.a * msRgbXyz[1, 0] + rgb.b * msRgbXyz[1, 1] + rgb.c * msRgbXyz[1, 2];
xyz.c = rgb.a * msRgbXyz[2, 0] + rgb.b * msRgbXyz[2, 1] + rgb.c * msRgbXyz[2, 2];
return xyz;
}
internal Info RgbToXyz(Color2 color)
{
Info rgb;
Info xyz;
// Valores rgb lineales [0, 1]
//rgb.a = (float)Math.Pow(color.R / 255.0, 2.2);
//rgb.b = (float)Math.Pow(color.G / 255.0, 2.2);
//rgb.c = (float)Math.Pow(color.B / 255.0, 2.2);
rgb.a = lutPow[color.r];
rgb.b = lutPow[color.g];
rgb.c = lutPow[color.b];
// Valores xyz
xyz.a = rgb.a * msRgbXyz[0, 0] + rgb.b * msRgbXyz[0, 1] + rgb.c * msRgbXyz[0, 2];
xyz.b = rgb.a * msRgbXyz[1, 0] + rgb.b * msRgbXyz[1, 1] + rgb.c * msRgbXyz[1, 2];
xyz.c = rgb.a * msRgbXyz[2, 0] + rgb.b * msRgbXyz[2, 1] + rgb.c * msRgbXyz[2, 2];
return(xyz);
}
internal void SetPixel(int x, int y, Color2 color)
{
PixelData* data = (PixelData*)(pBase + y * stride + x * sizeof(PixelData));
data->alpha = color.a;
data->red = color.r;
data->green = color.g;
data->blue = color.b;
}
public Info ConvertFromRgb(Color2 color)
{
return new Info() { a = color.r - 128, b = color.g - 128, c = color.b - 128 };
}
public Info ConvertFromRgb(Color2 rgb)
{
Info info = RgbToXyz(rgb);
return XyzToLab(info);
}
public Info ConvertFromRgb(Color2 rgb)
{
Info info = RgbToXyz(rgb);
return(XyzToLab(info));
}
/// <summary>
/// Converts from their colorspace to RGB and combines all previously decoded channels
/// </summary>
/// <param name="imgInfo"></param>
/// <param name="imgS"></param>
/// <returns>A 2D array representing the color data from the image</returns>
internal static Color2[,] MergeChannels(ImgInfo imgInfo, float[][,] imgS)
{
Color2[,] img = new Color2[imgInfo.height, imgInfo.width];
IColorspaceConverter converter;
if (imgInfo.app14MarkerFound)
{
switch (imgInfo.colorMode)
{
case Markers.App14ColorMode.Unknown:
if (imgInfo.numOfComponents == 3)
{
converter = new Rgb();
}
else
{
converter = new YCbCr();
}
break;
case Markers.App14ColorMode.YCbCr:
converter = new YCbCr();
break;
case Markers.App14ColorMode.YCCK:
converter = new YCbCr();
break;
default:
converter = new Rgb();
break;
}
}
else
{
converter = new Colorspaces.YCbCr();
}
for (int y = 0; y < imgInfo.height; y++)
{
for (int x = 0; x < imgInfo.width; x++)
{
Info info;
if (imgInfo.numOfComponents == 1) // Y
{
info.a = imgS[0][y, x];
info.b = 0;
info.c = 0;
}
else // YCbCr
{
info.a = imgS[0][y, x];
info.b = imgS[1][y, x];
info.c = imgS[2][y, x];
}
img[y, x] = converter.ConvertToRgb(info);
}
}
return img;
}
