//constOne - c for gamma\log (multCoeff); m for stretch
//constTwo - e for stretch; gamma for gammaCorr :o
private static void BrightTransformationShapka(Bitmap img, string operation, BrightConvPlane plane, double constOne, double constTwo)
{
string imgExtension = GetImageInfo.Imginfo(Imageinfo.Extension);
string imgName = GetImageInfo.Imginfo(Imageinfo.FileName);
string defPath = GetImageInfo.MyPath("BrightConv");
Bitmap image = new Bitmap(img.Width, img.Height, PixelFormat.Format24bppRgb);
double Depth = System.Drawing.Image.GetPixelFormatSize(img.PixelFormat);
string outName = string.Empty;
image = BrightTransformationHelper(img, operation, plane, constOne, constTwo);
int index = 0;
foreach (var n in Enum.GetValues(typeof(BrightConvPlane)).Cast <BrightConvPlane>())
{
if (Depth == 8)
{
index = 3; break;
} //ugly
if (n == plane)
{
index = (int)n; break;
}
;
}
if (operation == "stretch")
{
outName = defPath + imgName + StretchContrastVariant.ElementAt(index) + "_m_" + constOne + "_E_" + constTwo + imgExtension;
}
else if (operation == "log")
{
outName = defPath + imgName + LogTransVariant.ElementAt(index) + "_c_" + constOne + imgExtension;
}
else if (operation == "gamma")
{
outName = defPath + imgName + GammaVariant.ElementAt(index) + "_c_" + constOne + "_gamma_" + constTwo + imgExtension;
}
Helpers.SaveOptions(image, outName, imgExtension);
}
//s = c * r^gamma, r - pixel values. c & gama - const, c & gamma > 0
public static void GammaCorrection(Bitmap img, BrightConvPlane plane, double multCoeff, double gamma)
{
BrightTransformationShapka(img, "gamma", plane, multCoeff, gamma);
}
public static Bitmap GammaCorrectionBitmap(Bitmap img, BrightConvPlane plane, double multCoeff, double gamma)
{
return(BrightTransformationHelper(img, "gamma", plane, multCoeff, gamma));
}
public static Bitmap LogTransformationBitmap(Bitmap img, BrightConvPlane plane, double multCoeff)
{
return(BrightTransformationHelper(img, "log", plane, multCoeff, 0));
}
//s = c * log(1 + r), r - pixel values. c - constant, c > 0
public static void LogTransformation(Bitmap img, BrightConvPlane plane, double multCoeff)
{
BrightTransformationShapka(img, "log", plane, multCoeff, 0);
}
public static Bitmap StretchContrastBitmap(Bitmap img, BrightConvPlane plane, double m, double e)
{
return(BrightTransformationHelper(img, "stretch", plane, m, e));
}
// S = 1/(1 + (m/r)^E); r - image array, m - coef, E - controls function incline. m & E > 0
//m recomended average value of the color plane, E 4-5
public static void StretchContrast(Bitmap img, BrightConvPlane plane, double m, double e)
{
BrightTransformationShapka(img, "stretch", plane, m, e);
}
private static Bitmap BrightTransformationHelper(Bitmap img, string operation, BrightConvPlane plane, double constOne, double constTwo)
{
Bitmap image = new Bitmap(img.Width, img.Height, PixelFormat.Format24bppRgb);
double Depth = System.Drawing.Image.GetPixelFormatSize(img.PixelFormat);
int[,] resultR = new int[img.Height, img.Width];
int[,] resultG = new int[img.Height, img.Width];
int[,] resultB = new int[img.Height, img.Width];
List <ArraysListInt> ColorList = Helpers.GetPixels(img);
if (constOne > 0 && constTwo > 0)
{
if (!Checks.BinaryInput(img))
{
if (Depth == 8)
{
if (operation == "stretch")
{
resultR = ColorList[0].Color.StretchContrastFunc(constOne, constTwo);
}
else if (operation == "log")
{
resultR = ColorList[0].Color.LogTransformationFunc(constOne);
}
else if (operation == "gamma")
{
resultR = ColorList[0].Color.GammaCorrectionFunc(constOne, constTwo);
}
resultG = resultR; resultB = resultR;
}
else
{
switch (plane)
{
case BrightConvPlane.Rplane: //R plane
if (operation == "stretch")
{
resultR = ColorList[0].Color.StretchContrastFunc(constOne, constTwo);
}
else if (operation == "log")
{
resultR = ColorList[0].Color.LogTransformationFunc(constOne);
}
else if (operation == "gamma")
{
resultR = ColorList[0].Color.GammaCorrectionFunc(constOne, constTwo);
}
resultG = ColorList[1].Color; resultB = ColorList[2].Color;
break;
case BrightConvPlane.Gplane: //G plane
if (operation == "stretch")
{
resultG = ColorList[1].Color.StretchContrastFunc(constOne, constTwo);
}
else if (operation == "log")
{
resultG = ColorList[1].Color.LogTransformationFunc(constOne);
}
else if (operation == "gamma")
{
resultG = ColorList[1].Color.GammaCorrectionFunc(constOne, constTwo);
}
resultR = ColorList[0].Color; resultB = ColorList[2].Color;
break;
case BrightConvPlane.Bplane: //B plane
if (operation == "stretch")
{
resultB = ColorList[2].Color.StretchContrastFunc(constOne, constTwo);
}
else if (operation == "log")
{
resultB = ColorList[2].Color.LogTransformationFunc(constOne);
}
else if (operation == "gamma")
{
resultB = ColorList[2].Color.GammaCorrectionFunc(constOne, constTwo);
}
resultR = ColorList[0].Color; resultG = ColorList[1].Color;
break;
case BrightConvPlane.RGB:
if (operation == "stretch")
{
resultR = ColorList[0].Color.StretchContrastFunc(constOne, constTwo);
resultG = ColorList[1].Color.StretchContrastFunc(constOne, constTwo);
resultB = ColorList[2].Color.StretchContrastFunc(constOne, constTwo);
}
else if (operation == "log")
{
resultR = ColorList[0].Color.LogTransformationFunc(constOne);
resultG = ColorList[1].Color.LogTransformationFunc(constOne);
resultB = ColorList[2].Color.LogTransformationFunc(constOne);
}
else if (operation == "gamma")
{
resultR = ColorList[0].Color.GammaCorrectionFunc(constOne, constTwo);
resultG = ColorList[1].Color.GammaCorrectionFunc(constOne, constTwo);
resultB = ColorList[2].Color.GammaCorrectionFunc(constOne, constTwo);
}
break;
}
}
image = Helpers.SetPixels(image, resultR, resultG, resultB);
if (Depth == 8)
{
image = PixelFormatWorks.Bpp24Gray2Gray8bppBitMap(image);
}
}
else
{
Console.WriteLine("What did you expected to make log transformation with binary image? Return black square.");
}
}
else
{
Console.WriteLine("Input constants must be positive value. Return black square.");
}
return(image);
}