public void QuantizersPerformanceTest()
{
using var bmpRef = Icons.Information.ExtractBitmap(new Size(256, 256));
new PerformanceTest {
TestName = $"{bmpRef.Width}x{bmpRef.Height}@{bmpRef.GetColorCount()}", Iterations = 25, CpuAffinity = null
}
.AddCase(() =>
{
using var result = bmpRef.CloneBitmap();
result.Quantize(PredefinedColorsQuantizer.SystemDefault8BppPalette());
}, nameof(PredefinedColorsQuantizer.SystemDefault8BppPalette))
.AddCase(() =>
{
using var result = bmpRef.CloneBitmap();
result.Quantize(OptimizedPaletteQuantizer.Octree());
}, nameof(OptimizedPaletteQuantizer.Octree))
.AddCase(() =>
{
using var result = bmpRef.CloneBitmap();
result.Quantize(OptimizedPaletteQuantizer.MedianCut());
}, nameof(OptimizedPaletteQuantizer.MedianCut))
.AddCase(() =>
{
using var result = bmpRef.CloneBitmap();
result.Quantize(OptimizedPaletteQuantizer.Wu());
}, nameof(OptimizedPaletteQuantizer.Wu))
.DoTest()
.DumpResults(Console.Out);
}
public void DitherPerformanceTest(bool errorDiffusion)
{
using var bmpRef = Icons.Information.ExtractBitmap(new Size(256, 256));
IQuantizer quantizer = PredefinedColorsQuantizer.SystemDefault8BppPalette();
IDitherer ditherer = errorDiffusion ? (IDitherer)ErrorDiffusionDitherer.FloydSteinberg : OrderedDitherer.Bayer8x8;
new PerformanceTest {
TestName = $"{bmpRef.Width}x{bmpRef.Height}@{bmpRef.GetColorCount()} {(errorDiffusion ? "Error Diffusion" : "Ordered")}", Iterations = 100, CpuAffinity = null
}
.AddCase(() =>
{
using var result = bmpRef.CloneBitmap();
result.Dither(quantizer, ditherer);
}, "BitmapExtensions.Dither")
.AddCase(() =>
{
using var result = bmpRef.CloneBitmap();
using (IBitmapDataInternal bitmapData = BitmapDataFactory.CreateBitmapData(result, ImageLockMode.ReadWrite))
using (IQuantizingSession quantizingSession = quantizer.Initialize(bitmapData))
using (IDitheringSession ditheringSession = ditherer.Initialize(bitmapData, quantizingSession))
{
var row = bitmapData.DoGetRow(0);
int width = bitmapData.Width;
do
{
for (int x = 0; x < width; x++)
{
row.DoSetColor32(x, ditheringSession.GetDitheredColor(row.DoGetColor32(x), x, row.Index));
}
} while (row.MoveNextRow());
}
}, "Sequential dithering")
.DoTest()
.DumpResults(Console.Out);
}
public void QuantizePerformanceTest()
{
//using var bmpRef = new Bitmap(@"D:\Letolt\MYSTY8RQER62.jpg");
using var bmpRef = Icons.Information.ExtractBitmap(new Size(256, 256));
IQuantizer quantizer = PredefinedColorsQuantizer.SystemDefault8BppPalette();
new PerformanceTest {
TestName = $"{bmpRef.Width}x{bmpRef.Height}@{bmpRef.GetColorCount()}", Iterations = 100, CpuAffinity = null
}
.AddCase(() =>
{
using var result = bmpRef.CloneBitmap();
result.Quantize(quantizer);
}, "BitmapExtensions.Quantize")
.AddCase(() =>
{
using var result = bmpRef.CloneBitmap();
using (IBitmapDataInternal bitmapData = BitmapDataFactory.CreateBitmapData(result, ImageLockMode.ReadWrite))
using (IQuantizingSession session = quantizer.Initialize(bitmapData))
{
var row = bitmapData.DoGetRow(0);
int width = bitmapData.Width;
do
{
for (int x = 0; x < width; x++)
{
row.DoSetColor32(x, session.GetQuantizedColor(row.DoGetColor32(x)));
}
} while (row.MoveNextRow());
}
}, "Sequential quantization")
.DoTest()
.DumpResults(Console.Out);
}
