public NoDithering(IColorSpaceComparison comparison, List <DominoColor> palette)
{
comp = comparison;
lab_colors = new List <Lab>();
for (int i = 0; i < palette.Count; i++)
{
lab_colors.Add((new Rgb {
R = palette[i].rgb.R, G = palette[i].rgb.G, B = palette[i].rgb.B
}).To <Lab>());
}
}
override public int[,] Dither(WriteableBitmap input, IColorSpaceComparison comparison, float threshold = Int32.MaxValue)
{
bitmap = input;
IntPtr backBuffer = bitmap.BackBuffer;
pbuff = (byte *)backBuffer.ToPointer();
field = new int[input.PixelWidth, input.PixelHeight];
input.Lock();
int bwidth = input.PixelWidth;
int bheight = input.PixelHeight;
int stride = input.BackBufferStride;
int bytesPerPixel = (input.Format.BitsPerPixel + 7) / 8;
unsafe
{
byte *ptr = (byte *)input.BackBuffer;
int cRowStart = 0;
int cColStart = 0;
for (int row = 0; row < bheight; row++)
{
cColStart = cRowStart;
for (int col = 0; col < bwidth; col++)
{
byte *bPixel = ptr + cColStart;
Lab lab = (new Rgb {
R = bPixel[2], G = bPixel[1], B = bPixel[0]
}).To <Lab>();
int newp = Compare(lab, comparison, lab_colors);
System.Windows.Media.Color newpixel = palette[newp].rgb;
field[col, row] = newp;
cColStart += bytesPerPixel;
DiffuseError(col, row, bPixel[2] - newpixel.R, bPixel[1] - newpixel.G, bPixel[0] - newpixel.B);
}
cRowStart += stride;
}
}
input.Unlock();
return(field);
}
public static int Compare(Lab a, IColorSpaceComparison comp, List <Lab> cols, float threshold = Int32.MaxValue)
{
int Minimum = 0;
double min = comp.Compare(a, cols[0]);
double temp = Int32.MaxValue;
for (int z = 1; z < cols.Count; z++)
{
temp = comp.Compare(cols[z], a);
if (min > temp)
{
min = temp;
Minimum = z;
}
}
//if (min > threshold) MessageBox.Show("Der Grenzwert von " + threshold + "wurde überschritten (" + min + "). \nFarbwert im Originalbild: (" + original.R + "; " + original.G + "; " + original.B + "), "
// + "\nNächste Farbe: Farbname: " + farben.Einstellung[Minimum].Farbname + ", Farbwert: (" + farben.Einstellung[Minimum].RGBwert.R + "; " + farben.Einstellung[Minimum].RGBwert.G + "; " +
// farben.Einstellung[Minimum].RGBwert.B + ").");
return(Minimum);
}
/// <summary>
/// Convienience method for comparing any IColorSpace
/// </summary>
/// <param name="compareToValue"></param>
/// <param name="comparer"></param>
/// <returns>Single number representing the difference between two colors</returns>
public double Compare(IColorSpace compareToValue, IColorSpaceComparison comparer)
{
return(comparer.Compare(this, compareToValue));
}
/// <summary>
/// Convienience method for comparing any IColorSpace
/// </summary>
/// <param name="compareToValue"></param>
/// <param name="comparer"></param>
/// <returns>Single number representing the difference between two colors</returns>
public double Compare(IColorSpace compareToValue, IColorSpaceComparison comparer)
{
return(comparer.Compare(this.To <Lab>(), compareToValue.To <Lab>()));
}
public abstract int[,] Dither(WriteableBitmap input, IColorSpaceComparison comparison, float treshold = Int32.MaxValue);
/// <summary>
/// Convienience method for comparing any IColorSpace
/// </summary>
/// <param name="compareToValue"></param>
/// <param name="comparer"></param>
/// <returns>Single number representing the difference between two colors</returns>
public static double Compare(this IColorSpace space, IColorSpace compareToValue, IColorSpaceComparison comparer)
{
return(comparer.Compare(space, compareToValue));
}
public ColorFilter(IEnumerable<PaletteTile> paletteTiles)
{
_comparer = new Cie1976Comparison();
_tiles = paletteTiles.ToList();
}
public AvgColorSearcher()
{
TileContainer = new TileContainer();
TileContainer.LoadContainer();
_comparer = new Cie1976Comparison();
_usedTiles = new List<int>();
}
