public void CIE76ColorDifference(double l1, double a1, double b1, double l2, double a2, double b2, double expectedDeltaE)
{
// arrange
var x = new LabColor(l1, a1, b1);
var y = new LabColor(l2, a2, b2);
// act
var deltaE = new CIE76ColorDifference().ComputeDifference(x, y);
// assert
Assert.Equal(deltaE, expectedDeltaE, DoubleComparerLabPrecision);
}
public void CIE76ColorDifference(double l1, double a1, double b1, double l2, double a2, double b2, double expectedDeltaE)
{
// arrange
var x = new LabColor(l1, a1, b1);
var y = new LabColor(l2, a2, b2);
// act
double deltaE = new CIE76ColorDifference().ComputeDifference(x, y);
// assert
Assert.That(deltaE, Is.EqualTo(expectedDeltaE).Using(DoubleComparerLabPrecision));
}
private bool Compare(Bitmap bitmap, int x, int y, Color color)
{
var difference = new CIE76ColorDifference();
var converter = new ColourfulConverter()
{
WhitePoint = Illuminants.D65
};
var rgbColor = bitmap.GetPixel(bitmap.Width - x, bitmap.Height - y);
var labColor = converter.ToLab(new RGBColor(rgbColor));
var cmpColor = converter.ToLab(new RGBColor(color));
var diff = difference.ComputeDifference(labColor, cmpColor);
return(Math.Abs(diff) < ColorDiffThreashold);
}
public void ComputeDifference(double l1,
double a1,
double b1,
double l2,
double a2,
double b2,
double expectedDeltaE)
{
// arrange
var x = new LabColor(in l1, in a1, in b1);
var y = new LabColor(in l2, in a2, in b2);
// act
var deltaE = new CIE76ColorDifference().ComputeDifference(in x, in y);
// assert
Assert.Equal(expectedDeltaE, deltaE, DoubleComparerLabPrecision);
}
private bool IsSameColorContains(uint[] colors, uint c)
{
var difference = new CIE76ColorDifference();
var converter = new ColourfulConverter()
{
WhitePoint = Illuminants.D65
};
var labColor = converter.ToLab(new RGBColor(Color.FromArgb((int)c)));
foreach (var color in colors)
{
var l = converter.ToLab(new RGBColor(Color.FromArgb((int)color)));
var diff = difference.ComputeDifference(labColor, l);
if (Math.Abs(diff) < ColorDiffThreashold)
{
return(true);
}
}
return(false);
}
private PowDebuff[] GetPowDebuffs(Bitmap bitmap)
{
// 右下のアイコンは透過が少しあるため、ピクセル単位の色が完全一致しない。
// そのため、L*a*b色空間での色差が閾値以内かどうかで判定する。
var converter = new ColourfulConverter()
{
WhitePoint = Illuminants.D65
};
var powerBreakCmpLabColor1 = converter.ToLab(PowerBreakCmpColor1);
var powerBreakCmpLabColor2 = converter.ToLab(PowerBreakCmpColor2);
var difference = new CIE76ColorDifference();
for (int i = 0; i < MaxPowerDebuffCount; i++)
{
var x1 = bitmap.Width - 28 - (32 * i);
var x2 = bitmap.Width - 34 - (32 * i);
var y = bitmap.Height - 20;
var c1 = converter.ToLab(new RGBColor(bitmap.GetPixel(x1, y)));
var c2 = converter.ToLab(new RGBColor(bitmap.GetPixel(x2, y)));
var diff1 = difference.ComputeDifference(powerBreakCmpLabColor1, c1);
var diff2 = difference.ComputeDifference(powerBreakCmpLabColor2, c2);
if (Math.Abs(diff1) < ColorDiffThreashold &&
Math.Abs(diff2) < ColorDiffThreashold)
{
return(new PowDebuff[]
{
PowerBreak
});
}
}
return(new PowDebuff[0]);
}
public void ComputingColorDifference()
{
// CIE Delta-E 1976
{
var differenceCalculator = new CIE76ColorDifference();
var labColor1 = new LabColor(55, 80, 50);
var labColor2 = new LabColor(18, 36, -60);
var difference = differenceCalculator.ComputeDifference(in labColor1, in labColor2); // 124.1169
Assert.Equal(124.11688039908189, difference);
}
// CMC l:c 1984
{
var differenceThreshold = CMCColorDifferenceThreshold.Acceptability; // or "Imperceptibility"
var differenceCalculator = new CMCColorDifference(differenceThreshold);
var labColor1 = new LabColor(55, 80, 50);
var labColor2 = new LabColor(18, 36, -60);
var difference = differenceCalculator.ComputeDifference(in labColor1, in labColor2); // 69.7388
Assert.Equal(69.7387994508022, difference);
}
// CIE Delta-E 1994
{
var application = CIE94ColorDifferenceApplication.GraphicArts; // or "Textiles"
var differenceCalculator = new CIE94ColorDifference(application);
var labColor1 = new LabColor(55, 80, 50);
var labColor2 = new LabColor(18, 36, -60);
var difference = differenceCalculator.ComputeDifference(in labColor1, in labColor2); // 60.7882
Assert.Equal(60.78823549707133, difference);
}
// CIE Delta-E 2000
{
var differenceCalculator = new CIEDE2000ColorDifference();
var labColor1 = new LabColor(55, 80, 50);
var labColor2 = new LabColor(18, 36, -60);
var difference = differenceCalculator.ComputeDifference(in labColor1, in labColor2); // 52.2320
Assert.Equal(52.23202852556586, difference);
}
// Delta Ez
{
var differenceCalculator = new JzCzhzDEzColorDifference();
var color1 = new JzCzhzColor(0.3, 0.4, 165);
var color2 = new JzCzhzColor(0.8, 0.6, 25);
var difference = differenceCalculator.ComputeDifference(in color1, in color2); // 1.0666
Assert.Equal(1.066630832433185, difference);
}
// Euclidean distance
{
// example for euclidean distance in the XYZ color space
var differenceCalculator = new EuclideanDistanceColorDifference <XYZColor>();
var color1 = new XYZColor(0.5, 0.5, 0.5);
var color2 = new XYZColor(0.2, 0.4, 0.6);
var difference = differenceCalculator.ComputeDifference(in color1, in color2); // 0.3317
Assert.Equal(0.33166247903553997, difference);
}
}
