/// <summary>
/// Create a new error filter with default error matrix.
/// </summary>
public MatrixErrorFilter()
{
_matrix = ErrorMatrix.Samples.Default;
}
/// <summary>
/// Fill the config manager with a default configuration.
/// </summary>
/// <param name="config"></param>
public static void makeSampleConfig(ConfigManager config)
{
if (config == null) {
return;
}
int counter = 1; // number of the preset to preserve the order
// ----------------------------------------------
// Thresholding
HalftoneAlgorithm halftoneAlgorithm = new HalftoneAlgorithm();
ThresholdHalftoneMethod thresholdHalftoneMethod =
new ThresholdHalftoneMethod();
halftoneAlgorithm.Method = thresholdHalftoneMethod;
halftoneAlgorithm.Name = String.Format("[{0:d2}] Thresholding", counter);
halftoneAlgorithm.Description = "Simple threshold at 50% grey";
config.saveModule(halftoneAlgorithm, false);
counter++;
// ----------------------------------------------
// Random dither with white noise
DynamicMatrixThresholdFilter dynamicThresholdFilter =
new DynamicMatrixThresholdFilter();
dynamicThresholdFilter.MatrixTable.addDefinitionRecord(
new DynamicMatrixThresholdFilter.ThresholdRecord(
0, ThresholdMatrix.Samples.simpleThreshold, 1.0));
thresholdHalftoneMethod.ThresholdFilter = dynamicThresholdFilter;
halftoneAlgorithm.Name =
String.Format("[{0:d2}] Random dither", counter);
halftoneAlgorithm.Description = "Threshold perturbed with white noise";
config.saveModule(halftoneAlgorithm, false);
counter++;
// ----------------------------------------------
// Bayer matrix
thresholdHalftoneMethod.ThresholdFilter = new MatrixThresholdFilter(
ThresholdMatrix.Samples.createBayerDispersedDotMatrix(3));
halftoneAlgorithm.Name =
String.Format("[{0:d2}] Ordered dither with Bayer matrix", counter);
halftoneAlgorithm.Description = "Recursive tesselation matrix 8x8";
config.saveModule(halftoneAlgorithm, false);
counter++;
// -------------------- SCREENING METHODS --------------------
// Clustered-dot hand coded threshold matrix
thresholdHalftoneMethod.ThresholdFilter = new MatrixThresholdFilter(
ThresholdMatrix.Samples.sampleScreenMatrix);
halftoneAlgorithm.Name =
String.Format("[{0:d2}] Screen - Clustered-dot threshold matrix", counter);
halftoneAlgorithm.Description = "Hand-coded threshold matrix 8x8 with 45 angle";
config.saveModule(halftoneAlgorithm, false);
counter++;
// ----------------------------------------------
// Spot function - Eulid dot
thresholdHalftoneMethod.ThresholdFilter = new SpotFunctionThresholdFilter(
SpotFunction.Samples.euclidDot);
halftoneAlgorithm.Name =
String.Format("[{0:d2}] Screen - Spot function", counter);
halftoneAlgorithm.Description = "Euclid-dot spot function - computed on-the-fly\nEuclid dot: angle = 45 deg, distance: 10 px";
config.saveModule(halftoneAlgorithm, false);
counter++;
// ----------------------------------------------
// Patterning
thresholdHalftoneMethod.ThresholdFilter = new MatrixThresholdFilter(
new ThresholdMatrix(new int[,] { { 1, 2 }, { 3, 4 } }));
halftoneAlgorithm.PreResize = new HalftoneAlgorithm.Resize()
{
Factor = 2.0,
Interpolation = HalftoneAlgorithm.Resize.InterpolationType.NearestNeighbour
};
halftoneAlgorithm.Name =
String.Format("[{0:d2}] Screen - Patterning", counter);
halftoneAlgorithm.Description = "Resize 2x via Nearest-neighbour interpolation\n2x2 matrix threshold";
config.saveModule(halftoneAlgorithm, false);
counter++;
halftoneAlgorithm.PreResize = null;
// -------------------- ERROR DIFFUSION METHODS --------------------
// Floyd-Steinberg
thresholdHalftoneMethod.ThresholdFilter = new MatrixThresholdFilter();
thresholdHalftoneMethod.ErrorFilter = new MatrixErrorFilter(
ErrorMatrix.Samples.floydSteinberg);
halftoneAlgorithm.Name =
String.Format("[{0:d2}] Error diffusion - Floyd-Steinberg", counter);
halftoneAlgorithm.Description = "Floyd-Steinberg matrix, scanline order";
config.saveModule(halftoneAlgorithm, false);
counter++;
// ----------------------------------------------
// Jarvis-Judice-Ninke
thresholdHalftoneMethod.ErrorFilter = new MatrixErrorFilter(
ErrorMatrix.Samples.jarvisJudiceNinke);
halftoneAlgorithm.Name =
String.Format("[{0:d2}] Error diffusion - Jarvis-Judice-Ninke", counter);
halftoneAlgorithm.Description = "Jarvis-Judice-Ninke matrix, scanline order";
config.saveModule(halftoneAlgorithm, false);
counter++;
// ----------------------------------------------
// Stucki
thresholdHalftoneMethod.ErrorFilter = new MatrixErrorFilter(
ErrorMatrix.Samples.stucki);
halftoneAlgorithm.Name =
String.Format("[{0:d2}] Error diffusion - Stucki", counter);
halftoneAlgorithm.Description = "Stucki matrix, scanline order";
config.saveModule(halftoneAlgorithm, false);
counter++;
// ----------------------------------------------
// Floyd-Steinberg serpentine
thresholdHalftoneMethod.ErrorFilter = new MatrixErrorFilter(
ErrorMatrix.Samples.floydSteinberg);
thresholdHalftoneMethod.ScanningOrder = new SerpentineScanningOrder();
halftoneAlgorithm.Name =
String.Format("[{0:d2}] Error diffusion - Floyd-Steinberg serpentine", counter);
halftoneAlgorithm.Description = "Floyd-Steinberg matrix, serpentine order";
config.saveModule(halftoneAlgorithm, false);
counter++;
thresholdHalftoneMethod.ScanningOrder = new ScanlineScanningOrder();
// Error diffusion + sharpening
thresholdHalftoneMethod.ErrorFilter = new MatrixErrorFilter(
ErrorMatrix.Samples.floydSteinberg);
halftoneAlgorithm.PreSharpen = new HalftoneAlgorithm.Sharpen() { Amount = 0.4 };
halftoneAlgorithm.Name =
String.Format("[{0:d2}] Error diffusion + sharpening", counter);
halftoneAlgorithm.Description = "Pre-sharpened by 40%\nFloyd-Steinberg matrix, scanline order";
config.saveModule(halftoneAlgorithm, false);
counter++;
halftoneAlgorithm.PreSharpen = null;
// -------------------- SFC METHODS --------------------
// SFC clustering - positioning & adaptive
SFCClusteringMethod sfcClusteringMethod = new SFCClusteringMethod();
halftoneAlgorithm.Method = sfcClusteringMethod;
sfcClusteringMethod.UseClusterPositioning = true;
sfcClusteringMethod.UseAdaptiveClustering = true;
halftoneAlgorithm.Name =
String.Format("[{0:d2}] SFC clustering - positioned & adaptive", counter);
halftoneAlgorithm.Description = "SFC clustering, cell size: " +
sfcClusteringMethod.MaxCellSize + ", positioning enabled, adaptive";
config.saveModule(halftoneAlgorithm, false);
counter++;
// ----------------------------------------------
// SFC clustering - bare
sfcClusteringMethod.UseClusterPositioning = false;
sfcClusteringMethod.UseAdaptiveClustering = false;
halftoneAlgorithm.Name =
String.Format("[{0:d2}] SFC clustering - bare", counter);
halftoneAlgorithm.Description = "SFC clustering, cell size: " +
sfcClusteringMethod.MaxCellSize + ", no positioning, non-adaptive";
config.saveModule(halftoneAlgorithm, false);
counter++;
// ----------------------------------------------
// SFC clustering - positioning
sfcClusteringMethod.UseClusterPositioning = true;
halftoneAlgorithm.Name =
String.Format("[{0:d2}] SFC clustering - positioned", counter);
halftoneAlgorithm.Description = "SFC clustering, cell size: " +
sfcClusteringMethod.MaxCellSize + ", positioning enabled, non-adaptive";
config.saveModule(halftoneAlgorithm, false);
counter++;
// ----------------------------------------------
// SFC clustering - adaptive
sfcClusteringMethod.UseClusterPositioning = false;
sfcClusteringMethod.UseAdaptiveClustering = true;
halftoneAlgorithm.Name =
String.Format("[{0:d2}] SFC clustering - adaptive", counter);
halftoneAlgorithm.Description = "SFC clustering, cell size: " +
sfcClusteringMethod.MaxCellSize + ", no positioning, adaptive";
config.saveModule(halftoneAlgorithm, false);
counter++;
// ----------------------------------------------
// SFC clustering - positioning & adaptive - larger cell
sfcClusteringMethod.UseClusterPositioning = true;
sfcClusteringMethod.UseAdaptiveClustering = true;
sfcClusteringMethod.MaxCellSize = 30;
halftoneAlgorithm.Name =
String.Format("[{0:d2}] SFC clustering - larger cell", counter);
halftoneAlgorithm.Description = "SFC clustering, cell size: " +
sfcClusteringMethod.MaxCellSize + ", positioning enabled, adaptive";
config.saveModule(halftoneAlgorithm, false);
counter++;
// ----------------------------------------------
halftoneAlgorithm.Method = thresholdHalftoneMethod;
thresholdHalftoneMethod.ThresholdFilter = new MatrixThresholdFilter();
thresholdHalftoneMethod.ScanningOrder = new HilbertScanningOrder();
// Riermersma
thresholdHalftoneMethod.ErrorFilter = new VectorErrorFilter(
ErrorMatrix.Samples.riemersma16);
halftoneAlgorithm.Name =
String.Format("[{0:d2}] SFC - Riemersma", counter);
halftoneAlgorithm.Description = "Error diffusion along Hilbert SFC, error coefficients decrease exponencially\nNumber of coefficients: 16, highest-to-lowest ratio: 16:1";
config.saveModule(halftoneAlgorithm, false);
counter++;
// ----------------------------------------------
// SFC + simple error diffusion
thresholdHalftoneMethod.ErrorFilter = new VectorErrorFilter(
ErrorMatrix.Samples.nextPixel);
halftoneAlgorithm.Name =
String.Format("[{0:d2}] SFC - Simple error diffusion along Hilbert curve", counter);
halftoneAlgorithm.Description = "The whole error goes to the next pixel";
config.saveModule(halftoneAlgorithm, false);
counter++;
// ----------------------------------------------
// SFC + simple error diffusion + pertubed threshold
dynamicThresholdFilter.MatrixTable.clearDefinitionRecords();
dynamicThresholdFilter.MatrixTable.addDefinitionRecord(
new DynamicMatrixThresholdFilter.ThresholdRecord(0,
ThresholdMatrix.Samples.simpleThreshold, 1.0));
thresholdHalftoneMethod.ThresholdFilter = dynamicThresholdFilter;
thresholdHalftoneMethod.ErrorFilter = new VectorErrorFilter(
ErrorMatrix.Samples.nextPixel);
halftoneAlgorithm.Name =
String.Format("[{0:d2}] SFC - error diffusion, pertubed threshold", counter);
halftoneAlgorithm.Description = "Hilbert SFC, error to the next pixel, threshold perturbation: 1.0\nQuite good blue-noise";
config.saveModule(halftoneAlgorithm, false);
counter++;
// ----------------------------------------------
// Riermersma + perturbed threshold
dynamicThresholdFilter.MatrixTable.clearDefinitionRecords();
dynamicThresholdFilter.MatrixTable.addDefinitionRecord(
new DynamicMatrixThresholdFilter.ThresholdRecord(0,
ThresholdMatrix.Samples.simpleThreshold, 0.25));
thresholdHalftoneMethod.ErrorFilter = new VectorErrorFilter(
ErrorMatrix.Samples.riemersma16);
halftoneAlgorithm.Name =
String.Format("[{0:d2}] SFC - Riemersma, perturbed threshold", counter);
halftoneAlgorithm.Description = "Error diffusion along Hilbert SFC, error coefficients decrease exponencially\nNumber of coefficients: 16, highest-to-lowest ratio: 16:1\nThreshold perturbation: 0.25";
config.saveModule(halftoneAlgorithm, false);
counter++;
// -------------------- BLUE-NOISE METHODS --------------------
// Randomized error matrix - preserved coefficient count
thresholdHalftoneMethod.ThresholdFilter = new MatrixThresholdFilter();
thresholdHalftoneMethod.ErrorFilter = new RandomizedMatrixErrorFilter(
ErrorMatrix.Samples.floydSteinberg);
thresholdHalftoneMethod.ScanningOrder = new SerpentineScanningOrder();
halftoneAlgorithm.Name =
String.Format("[{0:d2}] Randomized error matrix - preserved coefficient count", counter);
halftoneAlgorithm.Description = "A template for coefficient positions as proposed by Ulichney";
config.saveModule(halftoneAlgorithm, false);
counter++;
// ----------------------------------------------
// Randomized error matrix - variable coefficient count
thresholdHalftoneMethod.ErrorFilter = new RandomizedMatrixErrorFilter(
ErrorMatrix.Samples.floydSteinberg) { RandomizeCoeffCount = true };
halftoneAlgorithm.Name =
String.Format("[{0:d2}] Randomized error matrix - variable coefficient count", counter);
halftoneAlgorithm.Description = "Floyd-Steinberg matrix as a template for matrix size only\nThe number of coefficient is randomized up to the capacity of the matrix";
config.saveModule(halftoneAlgorithm, false);
counter++;
// ----------------------------------------------
// Perturbed error matrix
thresholdHalftoneMethod.ErrorFilter = new PerturbedErrorFilter(
new MatrixErrorFilter(ErrorMatrix.Samples.floydSteinberg))
{ PerturbationAmplitude = 0.3 };
halftoneAlgorithm.Name =
String.Format("[{0:d2}] Perturbed error matrix", counter);
halftoneAlgorithm.Description = "Floyd-Steinberg matrix, perturbation amplitude: 0.3";
config.saveModule(halftoneAlgorithm, false);
counter++;
// ----------------------------------------------
// Perturbed error matrix + perturbed threshold
dynamicThresholdFilter.MatrixTable.clearDefinitionRecords();
dynamicThresholdFilter.MatrixTable.addDefinitionRecord(
new DynamicMatrixThresholdFilter.ThresholdRecord(0,
ThresholdMatrix.Samples.simpleThreshold, 0.15));
thresholdHalftoneMethod.ThresholdFilter = dynamicThresholdFilter;
thresholdHalftoneMethod.ErrorFilter = new PerturbedErrorFilter(
new MatrixErrorFilter(ErrorMatrix.Samples.floydSteinberg)) { PerturbationAmplitude = 0.3 };
thresholdHalftoneMethod.ScanningOrder = new SerpentineScanningOrder();
halftoneAlgorithm.Name =
String.Format("[{0:d2}] Perturbed error matrix and threshold", counter);
halftoneAlgorithm.Description = "A kind of blue-noise generator proposed by Ulichney\nFloyd-Steinberg matrix, perturbation amplitude: 0.3\nPerturbed threshold: 0.15\nSerpentine scanning";
config.saveModule(halftoneAlgorithm, false);
counter++;
// ----------------------------------------------
// Optimal weights - dynamic error matrix
int[,] ostromoukhovOptimalCoeffs = new int[,] {
{13, 0, 5}, {13, 0, 5}, {21, 0, 10}, {7, 0, 4},
{8, 0, 5}, {47, 3, 28}, {23, 3, 13}, {15, 3, 8},
{22, 6, 11}, {43, 15, 20}, {7, 3, 3}, {501, 224, 211},
{249, 116, 103}, {165, 80, 67}, {123, 62, 49}, {489, 256, 191},
{81, 44, 31}, {483, 272, 181}, {60, 35, 22}, {53, 32, 19},
{237, 148, 83}, {471, 304, 161}, {3, 2, 1}, {481, 314, 185},
{354, 226, 155}, {1389, 866, 685}, {227, 138, 125}, {267, 158, 163},
{327, 188, 220}, {61, 34, 45}, {627, 338, 505}, {1227, 638, 1075},
{20, 10, 19}, {1937, 1000, 1767}, {977, 520, 855}, {657, 360, 551},
{71, 40, 57}, {2005, 1160, 1539}, {337, 200, 247}, {2039, 1240, 1425},
{257, 160, 171}, {691, 440, 437}, {1045, 680, 627}, {301, 200, 171},
{177, 120, 95}, {2141, 1480, 1083}, {1079, 760, 513}, {725, 520, 323},
{137, 100, 57}, {2209, 1640, 855}, {53, 40, 19}, {2243, 1720, 741},
{565, 440, 171}, {759, 600, 209}, {1147, 920, 285}, {2311, 1880, 513},
{97, 80, 19}, {335, 280, 57}, {1181, 1000, 171}, {793, 680, 95},
{599, 520, 57}, {2413, 2120, 171}, {405, 360, 19}, {2447, 2200, 57},
{11, 10, 0}, {158, 151, 3}, {178, 179, 7}, {1030, 1091, 63},
{248, 277, 21}, {318, 375, 35}, {458, 571, 63}, {878, 1159, 147},
{5, 7, 1}, {172, 181, 37}, {97, 76, 22}, {72, 41, 17},
{119, 47, 29}, {4, 1, 1}, {4, 1, 1}, {4, 1, 1},
{4, 1, 1}, {4, 1, 1}, {4, 1, 1}, {4, 1, 1},
{4, 1, 1}, {4, 1, 1}, {65, 18, 17}, {95, 29, 26},
{185, 62, 53}, {30, 11, 9}, {35, 14, 11}, {85, 37, 28},
{55, 26, 19}, {80, 41, 29}, {155, 86, 59}, {5, 3, 2},
{5, 3, 2}, {5, 3, 2}, {5, 3, 2}, {5, 3, 2},
{5, 3, 2}, {5, 3, 2}, {5, 3, 2}, {5, 3, 2},
{5, 3, 2}, {5, 3, 2}, {5, 3, 2}, {5, 3, 2},
{305, 176, 119}, {155, 86, 59}, {105, 56, 39}, {80, 41, 29},
{65, 32, 23}, {55, 26, 19}, {335, 152, 113}, {85, 37, 28},
{115, 48, 37}, {35, 14, 11}, {355, 136, 109}, {30, 11, 9},
{365, 128, 107}, {185, 62, 53}, {25, 8, 7}, {95, 29, 26},
{385, 112, 103}, {65, 18, 17}, {395, 104, 101}, {4, 1, 1}
};
thresholdHalftoneMethod.ThresholdFilter = new MatrixThresholdFilter();
DynamicMatrixErrorFilter dynamicErrorFilter = new DynamicMatrixErrorFilter();
int[,] dynamicErrorCoeffs = new int[2,3];
ErrorMatrix dynamicErrorMatrix = new ErrorMatrix(dynamicErrorCoeffs, 1);
for (int i = 0; i < ostromoukhovOptimalCoeffs.GetLength(0); i++) {
dynamicErrorCoeffs[0, 2] = ostromoukhovOptimalCoeffs[i, 0];
dynamicErrorCoeffs[1, 0] = ostromoukhovOptimalCoeffs[i, 1];
dynamicErrorCoeffs[1, 1] = ostromoukhovOptimalCoeffs[i, 2];
dynamicErrorMatrix.setDefinitionMatrix(dynamicErrorCoeffs);
dynamicErrorFilter.MatrixTable.addDefinitionRecord(
new DynamicMatrixErrorFilter.ErrorRecord(i, dynamicErrorMatrix));
}
for (int i = ostromoukhovOptimalCoeffs.GetLength(0) - 1; i >= 0; i--) {
dynamicErrorCoeffs[0, 2] = ostromoukhovOptimalCoeffs[i, 0];
dynamicErrorCoeffs[1, 0] = ostromoukhovOptimalCoeffs[i, 1];
dynamicErrorCoeffs[1, 1] = ostromoukhovOptimalCoeffs[i, 2];
dynamicErrorMatrix.setDefinitionMatrix(dynamicErrorCoeffs);
dynamicErrorFilter.MatrixTable.addDefinitionRecord(
new DynamicMatrixErrorFilter.ErrorRecord(255 - i, dynamicErrorMatrix));
}
thresholdHalftoneMethod.ErrorFilter = dynamicErrorFilter;
thresholdHalftoneMethod.ScanningOrder = new SerpentineScanningOrder();
halftoneAlgorithm.Name =
String.Format("[{0:d2}] Blue noise - error diffusion with optimal coefficients", counter);
halftoneAlgorithm.Description = "Ostromoukhov";
config.saveModule(halftoneAlgorithm, false);
counter++;
// ----------------------------------------------
// Optimal weights + perturbed threshold
dynamicThresholdFilter.MatrixTable.clearDefinitionRecords();
dynamicThresholdFilter.MatrixTable.addDefinitionRecord(
new DynamicMatrixThresholdFilter.ThresholdRecord(0,
ThresholdMatrix.Samples.simpleThreshold, 0.35));
thresholdHalftoneMethod.ThresholdFilter = dynamicThresholdFilter;
halftoneAlgorithm.Name =
String.Format("[{0:d2}] Blue noise - optimal coefficients, perturbed threshold", counter);
halftoneAlgorithm.Description = "Ostromoukhov coefficients\n threshold perturbation: 0.35";
config.saveModule(halftoneAlgorithm, false);
counter++;
// -------------------- ARTISTIC METHODS --------------------
// Veryovka-Buchanan - no error filter
thresholdHalftoneMethod.ThresholdFilter = new ImageThresholdFilter()
{
ImageGenerator = new ImageGenerator()
{
SpotFunction = SpotFunction.Samples.nullSpot,
Effects = { ImageGenerator.Samples.patternEffect }
}
};
thresholdHalftoneMethod.ErrorFilter = null;
halftoneAlgorithm.Name =
String.Format("[{0:d2}] Veryovka-Buchanan without error filter", counter);
halftoneAlgorithm.Description =
"Image filled with a GIMP pattern + histogram equalization";
config.saveModule(halftoneAlgorithm, false);
counter++;
// ----------------------------------------------
// Veryovka-Buchanan - Ja-Ju-Ni error filter
thresholdHalftoneMethod.ErrorFilter = new MatrixErrorFilter(
ErrorMatrix.Samples.jarvisJudiceNinke);
halftoneAlgorithm.Name =
String.Format("[{0:d2}] Veryovka-Buchanan with error filter", counter);
halftoneAlgorithm.Description =
"Image filled with a GIMP pattern + histogram equalization\nJarvis-Judice-Ninke error matrix";
config.saveModule(halftoneAlgorithm, false);
counter++;
// ----------------------------------------------
// Supersampling - euclid dot spot function
SpotFunction bigDot = SpotFunction.Samples.euclidDot;
bigDot.Distance = 30;
thresholdHalftoneMethod.ErrorFilter = null;
thresholdHalftoneMethod.ThresholdFilter =
new SpotFunctionThresholdFilter(bigDot);
halftoneAlgorithm.PreResize = new HalftoneAlgorithm.Resize()
{
Factor = 2.0,
Interpolation = HalftoneAlgorithm.Resize.InterpolationType.Bicubic
};
halftoneAlgorithm.PostResize = new HalftoneAlgorithm.Resize()
{
Factor = 2.0,
Interpolation = HalftoneAlgorithm.Resize.InterpolationType.Bicubic,
Forward = false
};
halftoneAlgorithm.Name =
String.Format("[{0:d2}] Spot function with supersampling", counter);
halftoneAlgorithm.Description = "Euclid-dot spot function\nSmoothened via supersampling";
config.saveModule(halftoneAlgorithm, false);
counter++;
halftoneAlgorithm.PreResize = null;
halftoneAlgorithm.PostResize = null;
// ----------------------------------------------
// Smoothening - euclid dot spot function
halftoneAlgorithm.PostSmoothen = new HalftoneAlgorithm.Smoothen()
{
Radius = 5
};
halftoneAlgorithm.Name =
String.Format("[{0:d2}] Spot function with smoothening", counter);
halftoneAlgorithm.Description = "Euclid-dot spot function\nSmoothened via Gaussian blur & Levels";
config.saveModule(halftoneAlgorithm, false);
counter++;
halftoneAlgorithm.PostSmoothen = null;
// ----------------------------------------------
// Spot function + effects
thresholdHalftoneMethod.ThresholdFilter = new ImageThresholdFilter()
{
ImageGenerator = new ImageGenerator()
{
SpotFunction = SpotFunction.Samples.euclidDot,
Effects = {
ImageGenerator.Samples.pixelizeEffect,
ImageGenerator.Samples.rippleEffect
}
}
};
halftoneAlgorithm.Name =
String.Format("[{0:d2}] Spot function with effects", counter);
halftoneAlgorithm.Description =
"Euclid dot: angle = 45 deg, distance: 10 px\nEffects: Pixelize, Ripple";
config.saveModule(halftoneAlgorithm, false);
counter++;
// ----------------------------------------------
// Spot function + effects
thresholdHalftoneMethod.ThresholdFilter = new ImageThresholdFilter()
{
ImageGenerator = new ImageGenerator()
{
SpotFunction = bigDot,
Effects = {
ImageGenerator.Samples.canvasEffect
}
}
};
halftoneAlgorithm.Name =
String.Format("[{0:d2}] Spot function with effects", counter);
halftoneAlgorithm.Description =
"Euclid dot: angle = 45 deg, distance: 10 px\nEffects: Canvas";
config.saveModule(halftoneAlgorithm, false);
counter++;
// -------------------- MISCELANEOUS METHODS --------------------
// Floyd-Steinberg with dot gain compensation
thresholdHalftoneMethod.ThresholdFilter = new MatrixThresholdFilter();
thresholdHalftoneMethod.ErrorFilter = new MatrixErrorFilter(
ErrorMatrix.Samples.floydSteinberg);
halftoneAlgorithm.PreDotGain = new HalftoneAlgorithm.GammaCorrection()
{ Gamma = 2.2 };
halftoneAlgorithm.Name =
String.Format("[{0:d2}] Dot gain compensation", counter);
halftoneAlgorithm.Description = "Floyd-Steinberg, dot gain compensation via gamma curve";
config.saveModule(halftoneAlgorithm, false);
counter++;
halftoneAlgorithm.PreDotGain = null;
// Dynamic threshold filter
dynamicThresholdFilter.MatrixTable.clearDefinitionRecords();
dynamicThresholdFilter.MatrixTable.addDefinitionRecord(
new DynamicMatrixThresholdFilter.ThresholdRecord(0,
ThresholdMatrix.Samples.sampleScreenMatrix));
dynamicThresholdFilter.MatrixTable.addDefinitionRecord(
new DynamicMatrixThresholdFilter.ThresholdRecord(32,
ThresholdMatrix.Samples.createBayerDispersedDotMatrix(3)));
dynamicThresholdFilter.MatrixTable.addDefinitionRecord(
new DynamicMatrixThresholdFilter.ThresholdRecord(64,
ThresholdMatrix.Samples.createBayerDispersedDotMatrix(3), 1.0));
dynamicThresholdFilter.MatrixTable.addDefinitionRecord(
new DynamicMatrixThresholdFilter.ThresholdRecord(96,
ThresholdMatrix.Samples.createBayerDispersedDotMatrix(3), 0.5));
dynamicThresholdFilter.MatrixTable.addDefinitionRecord(
new DynamicMatrixThresholdFilter.ThresholdRecord(112,
ThresholdMatrix.Samples.simpleThreshold));
dynamicThresholdFilter.MatrixTable.addDefinitionRecord(
new DynamicMatrixThresholdFilter.ThresholdRecord(144,
ThresholdMatrix.Samples.createBayerDispersedDotMatrix(1)));
dynamicThresholdFilter.MatrixTable.addDefinitionRecord(
new DynamicMatrixThresholdFilter.ThresholdRecord(160,
ThresholdMatrix.Samples.createBayerDispersedDotMatrix(2)));
dynamicThresholdFilter.MatrixTable.addDefinitionRecord(
new DynamicMatrixThresholdFilter.ThresholdRecord(192,
ThresholdMatrix.Samples.simpleThreshold, 1.0));
dynamicThresholdFilter.MatrixTable.addDefinitionRecord(
new DynamicMatrixThresholdFilter.ThresholdRecord(224,
ThresholdMatrix.Samples.sampleScreenMatrix));
thresholdHalftoneMethod.ThresholdFilter = dynamicThresholdFilter;
thresholdHalftoneMethod.ErrorFilter = null;
thresholdHalftoneMethod.ScanningOrder = new ScanlineScanningOrder();
halftoneAlgorithm.Name =
String.Format("[{0:d2}] Tone-dependent threshold filter", counter);
halftoneAlgorithm.Description = "Screen 4x4 45deg angle, Bayer 8x8, Bayer 8x8 + perturbation 1.0, Bayer 8x8 + perturbation 0.5, threshold 0.5, Bayer 2x2, Bayer 4x4, white noise, screen";
config.saveModule(halftoneAlgorithm, false);
counter++;
// ----------------------------------------------
// Dynamic error filter
thresholdHalftoneMethod.ThresholdFilter = new MatrixThresholdFilter();
dynamicErrorFilter.MatrixTable.clearDefinitionRecords();
dynamicErrorFilter.MatrixTable.addDefinitionRecord(
new DynamicMatrixErrorFilter.ErrorRecord(0,
ErrorMatrix.Samples.floydSteinberg));
dynamicErrorFilter.MatrixTable.addDefinitionRecord(
new DynamicMatrixErrorFilter.ErrorRecord(64,
ErrorMatrix.Samples.jarvisJudiceNinke));
dynamicErrorFilter.MatrixTable.addDefinitionRecord(
new DynamicMatrixErrorFilter.ErrorRecord(128,
ErrorMatrix.Samples.stucki));
dynamicErrorFilter.MatrixTable.addDefinitionRecord(
new DynamicMatrixErrorFilter.ErrorRecord(192,
ErrorMatrix.Samples.sierra));
thresholdHalftoneMethod.ErrorFilter = dynamicErrorFilter;
thresholdHalftoneMethod.ScanningOrder = new ScanlineScanningOrder();
halftoneAlgorithm.Name =
String.Format("[{0:d2}] Tone-dependent error filter", counter);
halftoneAlgorithm.Description = "Floyd-Steinberg, Jarvis-Judice-Ninke, Stucki, Sierra";
config.saveModule(halftoneAlgorithm, false);
counter++;
// ----------------------------------------------
config.save();
// DEBUG:
//foreach (Module module in config.listAllModules()) {
// Console.Out.WriteLine("type: {0}, name: {1}, desc: {2}",
// module.GetType(), module.Name, module.Description);
//}
}
//public event EventHandler MatrixChanged;
/// <summary>
/// Create a new matrix error filter.
/// </summary>
/// <param name="matrix">Error matrix</param>
public MatrixErrorFilter(ErrorMatrix matrix)
{
Matrix = matrix;
}
/// <summary>
/// Set the matrix with optional buffer resize.
/// </summary>
/// <remarks>
/// Resize the buffer if a matrix with different height is set.
/// Note: buffer width depends on image size.
/// </remarks>
/// <param name="matrix">New error matrix</param>
/// <param name="resizeBuffer">True if buffer can be resized</param>
protected void setMatrix(ErrorMatrix matrix, bool resizeBuffer)
{
if (matrix != null) {
if (resizeBuffer && (Buffer != null) &&
(matrix.Height != _matrix.Height)) {
Buffer.resize(_matrix.Height, Buffer.Width);
}
_matrix = matrix;
//if (MatrixChanged != null) {
// MatrixChanged(this, new EventArgs());
//}
}
}
/// <summary>
/// Create a randomized matrix error filter using an existing
/// matrix as a template.
/// </summary>
/// <param name="matrix">Template error matrix</param>
public RandomizedMatrixErrorFilter(ErrorMatrix matrix)
: base(matrix)
{
}
/// <summary>
/// Create a vector error filter with a default error matrix.
/// </summary>
public VectorErrorFilter()
{
_matrix = ErrorMatrix.Samples.nextPixel;
}
/// <summary>
/// Create a vector error filter with given error matrix.
/// </summary>
/// <param name="matrix">Error matrix</param>
public VectorErrorFilter(ErrorMatrix matrix)
{
Matrix = matrix;
}