public Bitmap Clone(PixelFormat pixelFormat)
{
List <Color> palette = null;
// indexed formats require 2 passes - one more pass to determines colors for palette beforehand
if (pixelFormat.IsIndexed())
{
var quantizer = new DistinctSelectionQuantizer();
quantizer.Prepare(this);
// Pass: scan
ImageBuffer.ProcessPerPixel(this, null, ParallelTaskCount, (passIndex, pixel) =>
{
var color = pixel.GetColor();
quantizer.AddColor(color, pixel.X, pixel.Y);
return(true);
});
// determines palette
palette = quantizer.GetPalette(pixelFormat.GetColorCount());
}
// Pass: apply
Image result;
ImageBuffer.TransformImagePerPixel(this, pixelFormat, palette, out result, null, ParallelTaskCount,
(passIndex, sourcePixel, targetPixel) =>
{
var color = sourcePixel.GetColor();
targetPixel.SetColor(color, _quantizer);
return(true);
});
return((Bitmap)result);
}
private ColorPalette GetColours(Image sourceImage, PictureBox picture)
{
IColorQuantizer activeQuantizer = new DistinctSelectionQuantizer();
IColorCache activeColorCache = new EuclideanDistanceColorCache();
((BaseColorCacheQuantizer)activeQuantizer).ChangeCacheProvider(activeColorCache);
((BaseColorCache)activeColorCache).ChangeColorModel(ColorModel.RedGreenBlue);
Int32 parallelTaskCount = 8;
TaskScheduler uiScheduler = TaskScheduler.FromCurrentSynchronizationContext();
Image targetImage = ImageBuffer.QuantizeImage(sourceImage, activeQuantizer, null, 2, parallelTaskCount);
picture.Image = targetImage;
return(targetImage.Palette);
}
public Bitmap Clone(PixelFormat pixelFormat)
{
List<Color> palette = null;
// indexed formats require 2 passes - one more pass to determines colors for palette beforehand
if (pixelFormat.IsIndexed())
{
var quantizer = new DistinctSelectionQuantizer();
quantizer.Prepare(this);
// Pass: scan
ImageBuffer.ProcessPerPixel(this, null, ParallelTaskCount, (passIndex, pixel) =>
{
var color = pixel.GetColor();
quantizer.AddColor(color, pixel.X, pixel.Y);
return true;
});
// determines palette
palette = quantizer.GetPalette(pixelFormat.GetColorCount());
}
// Pass: apply
Image result;
ImageBuffer.TransformImagePerPixel(this, pixelFormat, palette, out result, null, ParallelTaskCount,
(passIndex, sourcePixel, targetPixel) =>
{
var color = sourcePixel.GetColor();
targetPixel.SetColor(color, _quantizer);
return true;
});
return (Bitmap)result;
}
