public void Dither(ImageBuffer target, IColorDitherer ditherer, IColorQuantizer quantizer, Int32 colorCount, Int32 parallelTaskCount = 4) { // checks parameters Guard.CheckNull(target, "target"); Guard.CheckNull(ditherer, "ditherer"); Guard.CheckNull(quantizer, "quantizer"); // prepares ditherer for another round ditherer.Prepare(quantizer, colorCount, this, target); // processes the image via the ditherer IList <Point> path = ditherer.GetPointPath(Width, Height); TransformPerPixel(target, path, ditherer.ProcessPixel, parallelTaskCount); }
public void Quantize(ImageBuffer target, IColorQuantizer quantizer, IColorDitherer ditherer, Int32 colorCount, Int32 parallelTaskCount = 4) { // checks parameters Guard.CheckNull(target, "target"); Guard.CheckNull(quantizer, "quantizer"); // initializes quantization parameters Boolean isTargetIndexed = target.PixelFormat.IsIndexed(); // step 1 - prepares the palettes List<Color> targetPalette = isTargetIndexed ? SynthetizePalette(quantizer, colorCount, parallelTaskCount) : null; // step 2 - updates the bitmap palette target.bitmap.SetPalette(targetPalette); target.UpdatePalette(true); // step 3 - prepares ditherer (optional) if (ditherer != null) ditherer.Prepare(quantizer, colorCount, this, target); // step 4 - prepares the quantization function TransformPixelFunction quantize = (sourcePixel, targetPixel) => { // reads the pixel color Color color = GetColorFromPixel(sourcePixel); // converts alpha to solid color color = QuantizationHelper.ConvertAlpha(color); // quantizes the pixel SetColorToPixel(targetPixel, color, quantizer); // marks pixel as processed by default Boolean result = true; // preforms inplace dithering (optional) if (ditherer != null && ditherer.IsInplace) { result = ditherer.ProcessPixel(sourcePixel, targetPixel); } // returns the result return result; }; // step 5 - generates the target image IList<Point> path = quantizer.GetPointPath(Width, Height); TransformPerPixel(target, path, quantize, parallelTaskCount); // step 6 - preforms non-inplace dithering (optional) if (ditherer != null && !ditherer.IsInplace) { Dither(target, ditherer, quantizer, colorCount, 1); } // step 7 - finishes the dithering (optional) if (ditherer != null) ditherer.Finish(); // step 8 - clean-up quantizer.Finish(); }
public void Dither(ImageBuffer target, IColorDitherer ditherer, IColorQuantizer quantizer, Int32 colorCount, Int32 parallelTaskCount = 4) { // checks parameters Guard.CheckNull(target, "target"); Guard.CheckNull(ditherer, "ditherer"); Guard.CheckNull(quantizer, "quantizer"); // prepares ditherer for another round ditherer.Prepare(quantizer, colorCount, this, target); // processes the image via the ditherer IList<Point> path = ditherer.GetPointPath(Width, Height); TransformPerPixel(target, path, ditherer.ProcessPixel, parallelTaskCount); }
public void Quantize(ImageBuffer target, IColorQuantizer quantizer, IColorDitherer ditherer, Int32 colorCount, Int32 parallelTaskCount = 4) { // checks parameters Guard.CheckNull(target, "target"); Guard.CheckNull(quantizer, "quantizer"); // initializes quantization parameters Boolean isTargetIndexed = target.PixelFormat.IsIndexed(); // step 1 - prepares the palettes List <Color> targetPalette = isTargetIndexed ? SynthetizePalette(quantizer, colorCount, parallelTaskCount) : null; // step 2 - updates the bitmap palette target.bitmap.SetPalette(targetPalette); target.UpdatePalette(true); // step 3 - prepares ditherer (optional) if (ditherer != null) { ditherer.Prepare(quantizer, colorCount, this, target); } // step 4 - prepares the quantization function TransformPixelFunction quantize = (sourcePixel, targetPixel) => { // reads the pixel color Color color = GetColorFromPixel(sourcePixel); // converts alpha to solid color color = QuantizationHelper.ConvertAlpha(color); // quantizes the pixel SetColorToPixel(targetPixel, color, quantizer); // marks pixel as processed by default Boolean result = true; // preforms inplace dithering (optional) if (ditherer != null && ditherer.IsInplace) { result = ditherer.ProcessPixel(sourcePixel, targetPixel); } // returns the result return(result); }; // step 5 - generates the target image IList <Point> path = quantizer.GetPointPath(Width, Height); TransformPerPixel(target, path, quantize, parallelTaskCount); // step 6 - preforms non-inplace dithering (optional) if (ditherer != null && !ditherer.IsInplace) { Dither(target, ditherer, quantizer, colorCount, 1); } // step 7 - finishes the dithering (optional) if (ditherer != null) { ditherer.Finish(); } // step 8 - clean-up quantizer.Finish(); }