public static void InitPCT()
{
if (ConfigPCT.COLOR_SPACE_USING == ConfigPCT.ColorSpace.Lab)
{
if (ConfigPCT.FORMULA_LAB_USING == ConfigPCT.FormulaLab.Lab_CIE76)
{
calDistanceLabHandler = CalDistance_CIE76;
}
else if (ConfigPCT.FORMULA_LAB_USING == ConfigPCT.FormulaLab.Lab_CMCIC)
{
calDistanceLabHandler = CalDistance_CMCIC;
}
else if (ConfigPCT.FORMULA_LAB_USING == ConfigPCT.FormulaLab.Lab_CIE94)
{
calDistanceLabHandler = CalDistance_CIE94;
}
else if (ConfigPCT.FORMULA_LAB_USING == ConfigPCT.FormulaLab.Lab_CIE2000)
{
calDistanceLabHandler = CalDistance_CIE2000;
}
}
}
// force to use a formula to calculate
public static int ColorKNN(Color c, List <Color> listColor, ConfigPCT.ColorSpace colorSpace, ConfigPCT.FormulaRGB formulaRGBForUse, ConfigPCT.FormulaLab formulaLabForUse)
{
if (listColor == null || listColor.Count == 0)
{
return(-1);
}
CalDistanceLabDlgt calDistanceHandlerLocal = null;
if (colorSpace == ConfigPCT.ColorSpace.Lab)
{
if (formulaLabForUse == ConfigPCT.FormulaLab.Lab_CIE76)
{
calDistanceHandlerLocal = CalDistance_CIE76;
}
else if (formulaLabForUse == ConfigPCT.FormulaLab.Lab_CMCIC)
{
calDistanceHandlerLocal = CalDistance_CMCIC;
}
else if (formulaLabForUse == ConfigPCT.FormulaLab.Lab_CIE94)
{
calDistanceHandlerLocal = CalDistance_CIE94;
}
else if (formulaLabForUse == ConfigPCT.FormulaLab.Lab_CIE2000)
{
calDistanceHandlerLocal = CalDistance_CIE2000;
}
}
Lab labColor = ColorHelper.RgbToLab(new Rgb {
R = c.R, G = c.G, B = c.B
});
double minDistance;
if (colorSpace == ConfigPCT.ColorSpace.RGB)
{
minDistance = CalDistance_RGBEuclid(c, listColor[0]);
}
else
{
minDistance = calDistanceHandlerLocal(labColor, ColorHelper.RgbToLab(new Rgb {
R = listColor[0].R, G = listColor[0].G, B = listColor[0].B
}));
}
int size = listColor.Count;
int indexColor = 0;
for (int i = 1; i < size; i++)
{
double dis;
if (colorSpace == ConfigPCT.ColorSpace.RGB)
{
dis = CalDistance_RGBEuclid(c, listColor[i]);
}
else
{
dis = calDistanceHandlerLocal(labColor, ColorHelper.RgbToLab(new Rgb {
R = listColor[i].R, G = listColor[i].G, B = listColor[i].B
}));
}
if (dis < minDistance)
{
minDistance = dis;
indexColor = i;
}
}
return(indexColor);
}