//Ahtung! for HSV & Lab lost in accuracy, coz convert double->int->double
//Equalize histogram for image by using separate color plane and save to file
public static void Equalize(Bitmap img, HisteqColorSpace cSpace)
{
string imgExtension = GetImageInfo.Imginfo(Imageinfo.Extension);
string imgName = GetImageInfo.Imginfo(Imageinfo.FileName);
string defPath = GetImageInfo.MyPath("Sharp\\Histeq");
Bitmap image = new Bitmap(img.Width, img.Height, PixelFormat.Format24bppRgb);
image = EqualizeHelper(img, cSpace);
string outName = defPath + imgName + HisteqVariants.ElementAt((int)cSpace) + imgExtension;
Helpers.SaveOptions(image, outName, imgExtension);
}
////Equalize histogram for image brocess
private static Bitmap EqualizeHelper(Bitmap img, HisteqColorSpace cSpace)
{
Bitmap image = new Bitmap(img.Width, img.Height, PixelFormat.Format24bppRgb);
List <ArraysListInt> Result = new List <ArraysListInt>();
double Depth = System.Drawing.Image.GetPixelFormatSize(img.PixelFormat);
if (!Checks.BinaryInput(img))
{
List <ArraysListInt> ColorList = Helpers.GetPixels(img);
//obtain histogram in choosen color space
switch (cSpace)
{
case HisteqColorSpace.RGB:
if (Depth == 8)
{
var bw = HisteqHelper(ColorList[0].Color);
Result.Add(new ArraysListInt()
{
Color = bw
}); Result.Add(new ArraysListInt()
{
Color = bw
});
Result.Add(new ArraysListInt()
{
Color = bw
});
}
else
{
Result.Add(new ArraysListInt()
{
Color = HisteqHelper(ColorList[0].Color)
});
Result.Add(new ArraysListInt()
{
Color = HisteqHelper(ColorList[1].Color)
});
Result.Add(new ArraysListInt()
{
Color = HisteqHelper(ColorList[2].Color)
});
}
break;
case HisteqColorSpace.HSV:
var hsv = RGBandHSV.RGB2HSV(img);
var hsv_temp = HisteqHelper((hsv[2].Color).ImageDoubleToUint8());
//Filter by V - Value (Brightness/яркость)
//artificially if V > 1; make him 1
Result = RGBandHSV.HSV2RGB(hsv[0].Color, hsv[1].Color, hsv_temp.ImageUint8ToDouble().ToBorderGreaterZero(1));
break;
case HisteqColorSpace.Lab:
var lab = RGBandLab.RGB2Lab(img);
var lab_temp = HisteqHelper((lab[0].Color).ArrayToUint8());
//Filter by L - lightness
Result = RGBandLab.Lab2RGB(lab_temp.ArrayToDouble().ToBorderGreaterZero(255), lab[1].Color, lab[2].Color);
break;
case HisteqColorSpace.fakeCIE1976L:
var fakeCIE1976L = RGBandLab.RGB2Lab1976(img);
var fakeCIE1976L_temp = HisteqHelper(fakeCIE1976L[0].Color.ArrayToUint8());
//Filter by L - lightness
Result = RGBandLab.Lab1976toRGB(fakeCIE1976L_temp.ArrayToDouble(), fakeCIE1976L[1].Color, fakeCIE1976L[2].Color);
break;
}
image = Helpers.SetPixels(image, Result[0].Color, Result[1].Color, Result[2].Color);
if (Depth == 8)
{
image = PixelFormatWorks.Bpp24Gray2Gray8bppBitMap(image);
}
}
else
{
Console.WriteLine("What did you expected to HistogramEqualization binaty image? Return black square.");
}
return(image);
}
////Equalize histogram for image by using separate color plane and return bitmap
public static Bitmap EqualizeBitmap(Bitmap img, HisteqColorSpace cSpace)
{
return(EqualizeHelper(img, cSpace));
}
