private static Bitmap SaltPepperFilterProcess(Bitmap img, int m, int n, double filterOrder, SaltPepperfilterType spfiltType, bool unsharp)
{
Bitmap image = new Bitmap(img.Width, img.Height, PixelFormat.Format24bppRgb);
List <ArraysListInt> ColorList = Helpers.GetPixels(img);
var Rc = ColorList[0].Color;
var Gc = ColorList[1].Color;
var Bc = ColorList[2].Color;
double[,] filter;
int[,] resultR = new int[img.Height, img.Width];
int[,] resultG = new int[img.Height, img.Width];
int[,] resultB = new int[img.Height, img.Width];
ArrGen <double> arrGen = new ArrGen <double>();
double Depth = System.Drawing.Image.GetPixelFormatSize(img.PixelFormat);
if (m >= 1 && n >= 1)
{
switch (spfiltType)
{
//Arithmetic mean filtering.
//help with salt noize
case SaltPepperfilterType.amean:
filter = ImageFilter.FspecialSize(m, n, "average");
resultR = (ImageFilter.Filter_double(Rc, filter)).ArrayToUint8();
resultG = (ImageFilter.Filter_double(Gc, filter)).ArrayToUint8();
resultB = (ImageFilter.Filter_double(Bc, filter)).ArrayToUint8();
break;
//Geometric mean filtering.
//help with salt noize
case SaltPepperfilterType.gmean:
filter = arrGen.ArrOfSingle(m, n, 1);
resultR = GmeanCount(Rc, filter, m, n);
resultG = GmeanCount(Gc, filter, m, n);
resultB = GmeanCount(Bc, filter, m, n);
break;
//harmonic mean filter
//help with salt noize
case SaltPepperfilterType.hmean:
filter = arrGen.ArrOfSingle(m, n, 1);
resultR = HmeanCount(Rc, filter, m, n);
resultG = HmeanCount(Gc, filter, m, n);
resultB = HmeanCount(Bc, filter, m, n);
break;
//contraharmonic mean filter Q>0 for pepper & <0 for salt
case SaltPepperfilterType.chmean:
filter = arrGen.ArrOfSingle(m, n, 1);
resultR = CharmeanCount(Rc, filter, filterOrder);
resultG = CharmeanCount(Gc, filter, filterOrder);
resultB = CharmeanCount(Bc, filter, filterOrder);
break;
default:
resultR = Rc; resultG = Gc; resultB = Bc;
break;
}
image = Helpers.SetPixels(image, resultR, resultG, resultB);
if (unsharp) //spfiltType == SaltPepperfilterType.chmean & unsharp
{
image = Helpers.FastSharpImage(image);
}
if (Depth == 8)
{
image = PixelFormatWorks.Bpp24Gray2Gray8bppBitMap(image);
}
if (Depth == 1)
{
image = PixelFormatWorks.ImageTo1BppBitmap(image, 0.5);
}
}
else
{
Console.WriteLine("m and n parameters must be positive geater or equal 1. Recommended 2 & 2 and higher. Method >SaltandPapperFilter<");
}
return(image);
}
//image smoothing by entered size for average filter process
private static Bitmap SmoothHelper(Bitmap img, int m, int n, SmoothInColorSpace cSpace)
{
Bitmap image = new Bitmap(img.Width, img.Height, PixelFormat.Format24bppRgb);
double Depth = System.Drawing.Image.GetPixelFormatSize(img.PixelFormat);
List <ArraysListInt> Result = new List <ArraysListInt>();
double[,] filter;
if (!Checks.BinaryInput(img))
{
List <ArraysListInt> ColorList = Helpers.GetPixels(img);
if (m >= 1 && n >= 1)
{
//create average filter by entered size
filter = ImageFilter.FspecialSize(m, n, "average");
//smooth in choosen color space
switch (cSpace)
{
case SmoothInColorSpace.RGB:
if (Depth == 8)
{
var bw = ImageFilter.Filter_double(ColorList[0].Color, filter).ArrayToUint8();
Result.Add(new ArraysListInt()
{
Color = bw
}); Result.Add(new ArraysListInt()
{
Color = bw
});
Result.Add(new ArraysListInt()
{
Color = bw
});
}
else
{
Result.Add(new ArraysListInt()
{
Color = ImageFilter.Filter_double(ColorList[0].Color, filter).ArrayToUint8()
});
Result.Add(new ArraysListInt()
{
Color = ImageFilter.Filter_double(ColorList[1].Color, filter).ArrayToUint8()
});
Result.Add(new ArraysListInt()
{
Color = ImageFilter.Filter_double(ColorList[2].Color, filter).ArrayToUint8()
});
}
break;
case SmoothInColorSpace.HSV:
var hsv = RGBandHSV.RGB2HSV(img);
var hsv_temp = ImageFilter.Filter_double(hsv[2].Color, filter, PadType.replicate);
//Filter by V - Value (Brightness/яркость)
//artificially if V > 1; make him 1
Result = RGBandHSV.HSV2RGB(hsv[0].Color, hsv[1].Color, hsv_temp.ToBorderGreaterZero(1));
break;
case SmoothInColorSpace.Lab:
var lab = RGBandLab.RGB2Lab(img);
var lab_temp = ImageFilter.Filter_double(lab[0].Color, filter, PadType.replicate);
//Filter by L - lightness
Result = RGBandLab.Lab2RGB(lab_temp.ToBorderGreaterZero(255), lab[1].Color, lab[2].Color);
break;
case SmoothInColorSpace.fakeCIE1976L:
var fakeCIE1976L = RGBandLab.RGB2Lab1976(img);
var fakeCIE1976L_temp = ImageFilter.Filter_double(fakeCIE1976L[0].Color, filter, PadType.replicate);
//Filter by L - lightness
Result = RGBandLab.Lab1976toRGB(fakeCIE1976L_temp, 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("m and n parameters must be positive and greater or equal 1. Recommended 2 & 2 and higher. Method >Smooth<. Return black square.");
}
}
else
{
Console.WriteLine("What did you expected to smooth binaty image? Return black square.");
}
return(image);
}
