public Bitmap applyBernzenThersholding(Bitmap image, Point imageSize, Point filterSize, bool convert = true)
{
Bitmap rezult = new Bitmap(image);
Bitmap tempImage;
if (convert)
{
tempImage = convertImageToGrayscale(image);
}
else
{
tempImage = new Bitmap(image);
}
ApertureService service = new ApertureService();
List <Aperture> apertures = service.getApertureMatrixGenerator(imageSize, filterSize);
for (int x = 0; x < apertures.Count; x++)
{
int minValue = 255, maxValue = 0;
double average;
List <List <Point> > matrix = apertures[x].matrix;
foreach (var matrixLine in matrix)
{
foreach (var Point in matrixLine)
{
int pixelPosX = Point.X;
int pixelPosY = Point.Y;
//т.к. картинка черно белая, то значения РГБ одинаковы, можно брыть любое из трех.
if (tempImage.GetPixel(pixelPosX, pixelPosY).R > maxValue)
{
maxValue = tempImage.GetPixel(pixelPosX, pixelPosY).R;
}
if (tempImage.GetPixel(pixelPosX, pixelPosY).R < minValue)
{
minValue = tempImage.GetPixel(pixelPosX, pixelPosY).R;
}
}
}
average = ((double)minValue + maxValue) / 2;
foreach (var matrixLine in matrix)
{
foreach (var Point in matrixLine)
{
int pixelPosX = Point.X;
int pixelPosY = Point.Y;
if (tempImage.GetPixel(pixelPosX, pixelPosY).R < average)
{
rezult.SetPixel(pixelPosX, pixelPosY, Color.FromArgb(0, 0, 0));
}
else
{
rezult.SetPixel(pixelPosX, pixelPosY, Color.FromArgb(255, 255, 255));
}
}
}
}
service = null;
for (int i = 0; i < apertures.Count; i++)
{
apertures[i].Dispose();
}
apertures.Clear();
return(rezult);
}
public static Bitmap applyGaussianBlurFilter(string colorMode, Bitmap image, Point imageSize, Point filterSize, int colorChannelIndex = 0)
{
Bitmap rezult = new Bitmap(image);
ApertureService service = new ApertureService();
List <Aperture> apertures = service.getApertureMatrixGenerator(imageSize, filterSize);
double sigma = 0.5;
for (int x = 0; x < apertures.Count; x++)
{
double rSum = 0, gSum = 0, bSum = 0, kSum = 0;
List <List <Point> > matrix = apertures[x].matrix;
int line = 0;
foreach (var matrixLine in matrix)
{
foreach (var Point in matrixLine)
{
int pixelPosX = Point.X;
int pixelPosY = Point.Y;
Color color = image.GetPixel(pixelPosX, pixelPosY);
double kVal = calculateGaussian(line, sigma);
rSum += color.R * kVal;
gSum += color.G * kVal;
bSum += color.B * kVal;
kSum += kVal;
}
line++;
}
if (kSum <= 0)
{
kSum = 1;
}
rSum = rSum / kSum;
if (rSum < 0)
{
rSum = 0;
}
else if (rSum > 255)
{
rSum = 255;
}
gSum = gSum / kSum;
if (gSum < 0)
{
gSum = 0;
}
else if (gSum > 255)
{
gSum = 255;
}
bSum = bSum / kSum;
if (bSum < 0)
{
bSum = 0;
}
else if (bSum > 255)
{
bSum = 255;
}
int aperturePosX = matrix.Count / 2;
if (matrix.Count != 0 && matrix[aperturePosX].Count / 2 != 0)
{
int aperturePosY = matrix[aperturePosX].Count / 2;
Color oldColor = image.GetPixel(matrix[aperturePosX][aperturePosY].X, matrix[aperturePosX][aperturePosY].Y);
if (colorChannelIndex == 0)
{
rezult.SetPixel(matrix[aperturePosX][aperturePosY].X, matrix[aperturePosX][aperturePosY].Y, Color.FromArgb((int)rSum, (int)gSum, (int)bSum));
}
else if (colorChannelIndex == 1)
{
rezult.SetPixel(matrix[aperturePosX][aperturePosY].X, matrix[aperturePosX][aperturePosY].Y, Color.FromArgb((int)rSum, oldColor.G, oldColor.B));
}
else if (colorChannelIndex == 2)
{
rezult.SetPixel(matrix[aperturePosX][aperturePosY].X, matrix[aperturePosX][aperturePosY].Y, Color.FromArgb(oldColor.R, (int)gSum, oldColor.B));
}
else if (colorChannelIndex == 3)
{
rezult.SetPixel(matrix[aperturePosX][aperturePosY].X, matrix[aperturePosX][aperturePosY].Y, Color.FromArgb(oldColor.R, oldColor.G, (int)bSum));
}
}
}
service = null;
for (int i = 0; i < apertures.Count; i++)
{
apertures[i].Dispose();
}
apertures.Clear();
return(rezult);
}
public Bitmap applyMedianFilter(string colorMode, Bitmap image, Point imageSize, Point filterSize,
int colorChannelIndex = 0)
{
Bitmap rezult = new Bitmap(image);
ApertureService service = new ApertureService();
List <Aperture> apertures = service.getApertureMatrixGenerator(imageSize, filterSize);
List <int> redList = new List <int>();
List <int> greenList = new List <int>();
List <int> blueList = new List <int>();
for (int x = 0; x < apertures.Count; x++)
{
redList.Clear();
blueList.Clear();
greenList.Clear();
List <List <Point> > matrix = apertures[x].matrix;
foreach (var matrixLine in matrix)
{
foreach (var Point in matrixLine)
{
int pixelPosX = Point.X;
int pixelPosY = Point.Y;
Color color = image.GetPixel(pixelPosX, pixelPosY);
redList.Add(color.R);
greenList.Add(color.G);
blueList.Add(color.B);
}
}
redList.Sort();
greenList.Sort();
blueList.Sort();
int apertureCenter = redList.Count / 2;
int rValue = redList[apertureCenter];
int gValue = greenList[apertureCenter];
int bValue = blueList[apertureCenter];
int aperturePosX = matrix.Count / 2;
int aperturePosY = matrix[aperturePosX].Count / 2;
Color oldColor = image.GetPixel(matrix[aperturePosX][aperturePosY].X,
matrix[aperturePosX][aperturePosY].Y);
if (colorChannelIndex == 0)
{
rezult.SetPixel(matrix[aperturePosX][aperturePosY].X, matrix[aperturePosX][aperturePosY].Y,
Color.FromArgb(rValue, gValue, bValue));
}
else if (colorChannelIndex == 1)
{
rezult.SetPixel(matrix[aperturePosX][aperturePosY].X, matrix[aperturePosX][aperturePosY].Y,
Color.FromArgb(rValue, oldColor.G, oldColor.B));
}
else if (colorChannelIndex == 2)
{
rezult.SetPixel(matrix[aperturePosX][aperturePosY].X, matrix[aperturePosX][aperturePosY].Y,
Color.FromArgb(oldColor.R, gValue, oldColor.B));
}
else if (colorChannelIndex == 3)
{
rezult.SetPixel(matrix[aperturePosX][aperturePosY].X, matrix[aperturePosX][aperturePosY].Y,
Color.FromArgb(oldColor.R, oldColor.G, bValue));
}
}
service = null;
for (int i = 0; i < apertures.Count; i++)
{
apertures[i].Dispose();
}
apertures.Clear();
return(rezult);
}
public int adaptiveFilterProcess(Bitmap image, string colorMode, int x, int y, Point filterSize, Point imageSize,
Point maxFilterSize)
{
ApertureService service = new ApertureService();
int pixelPosX = 0, pixelPosY = 0;
int rMax = 0, gMax = 0, bMax = 0;
int rMin = 256, gMin = 256, bMin = 256;
int rMedian, gMedian, bMedian;
Color thisPixelColor = image.GetPixel(x, y);
List <int> redList = new List <int>();
List <int> greenList = new List <int>();
List <int> blueList = new List <int>();
for (int i = 0; i < filterSize.X; i++)
{
for (int j = 0; j < filterSize.Y; j++)
{
service.getAperturePosition(x, y, imageSize, i, j, new Point(filterSize.X, filterSize.Y),
out pixelPosX, out pixelPosY);
if (pixelPosX == -1 || pixelPosY == -1)
{
continue;
}
else
{
Color color = image.GetPixel(pixelPosX, pixelPosY);
if (rMax < color.R)
{
rMax = color.R;
}
if (rMin > color.R)
{
rMin = color.R;
}
if (gMax < color.G)
{
gMax = color.G;
}
if (gMin > color.G)
{
gMin = color.G;
}
if (bMax < color.B)
{
bMax = color.B;
}
if (bMin > color.B)
{
bMin = color.B;
}
redList.Add(color.R);
greenList.Add(color.G);
blueList.Add(color.B);
}
}
}
//сортировка списков
redList.Sort();
greenList.Sort();
blueList.Sort();
//находим медиану яркости для апертуры
int apertureCenter = redList.Count / 2;
rMedian = redList[apertureCenter];
gMedian = greenList[apertureCenter];
bMedian = blueList[apertureCenter];
int checkMedian, checkMin, checkMax, checkColor;
if (colorMode == "R")
{
checkMedian = rMedian;
checkMin = rMin;
checkMax = rMax;
checkColor = thisPixelColor.R;
}
else if (colorMode == "G")
{
checkMedian = gMedian;
checkMin = gMin;
checkMax = gMax;
checkColor = thisPixelColor.G;
}
else if (colorMode == "B")
{
checkMedian = bMedian;
checkMin = bMin;
checkMax = bMax;
checkColor = thisPixelColor.B;
}
else
{
return(0);
}
//branch a
if (checkMedian - checkMin > 0 && checkMedian - checkMax < 0) //goto branch b
{
//branch b
if (checkColor - checkMin > 0 && checkColor - checkMax < 0)
{
return(checkColor);
}
else
{
return(checkMedian);
}
}
else
{
filterSize.X++;
filterSize.Y++;
if (filterSize.X > maxFilterSize.X || filterSize.Y > maxFilterSize.Y)
{
return(checkColor);
}
else
{
return(adaptiveFilterProcess(image, colorMode, x, y, filterSize, imageSize, maxFilterSize));
}
}
}
public Bitmap applyRecursiveFilter(string colorMode, Bitmap image, Point imageSize, Point filterSize,
int colorChannelIndex = 0)
{
Bitmap rezult = new Bitmap(image);
ApertureService service = new ApertureService();
List <Aperture> apertures = service.getApertureMatrixGenerator(imageSize, filterSize);
List <int> redList = new List <int>();
List <int> greenList = new List <int>();
List <int> blueList = new List <int>();
double[] rSumsArray = new double[apertures.Count];
double[] gSumsArray = new double[apertures.Count];
double[] bSumsArray = new double[apertures.Count];
for (int x = 0; x < apertures.Count; x++)
{
redList.Clear();
blueList.Clear();
greenList.Clear();
int rSum = 0, gSum = 0, bSum = 0, kSum = 0;
List <List <Point> > matrix = apertures[x].matrix;
bool isSideAperture = false;
foreach (var matrixLine in matrix)
{
foreach (var Point in matrixLine)
{
int pixelPosX = Point.X;
int pixelPosY = Point.Y;
//проверяем, выйдем ли мы за границы изображения слева, при расчетах,
// ведь идем от -r до +r потом.
if (pixelPosX <= filterSize.X || pixelPosY <= filterSize.Y)
{
isSideAperture = true;
}
Color color = image.GetPixel(pixelPosX, pixelPosY);
redList.Add(color.R);
greenList.Add(color.G);
blueList.Add(color.B);
kSum += 1;
}
}
//если при расчетах выйдем за рамки, считаем просто стреднее арифметическое.
if (isSideAperture)
{
for (int i = 0; i < redList.Count; i++)
{
rSum += redList[i];
gSum += greenList[i];
bSum += blueList[i];
}
rSumsArray[x] = rSum;
gSumsArray[x] = gSum;
bSumsArray[x] = bSum;
}
else
{
int rSum1 = 0, gSum1 = 0, bSum1 = 0, kSum1 = 0;
int rSum2 = 0, gSum2 = 0, bSum2 = 0, kSum2 = 0;
//крайне правый элемент предыдущего окна
for (int i = 0; i < matrix.Count; i++)
{
Color color = image.GetPixel(matrix[i][0].X - 1, matrix[i][0].Y);
rSum1 += color.R;
gSum1 += color.G;
bSum1 += color.B;
kSum1 += 1;
}
for (int i = 0; i < matrix.Count; i++)
{
Color color = image.GetPixel(matrix[i][filterSize.X - 1].X, matrix[i][filterSize.X - 1].Y);
rSum2 += color.R;
gSum2 += color.G;
bSum2 += color.B;
kSum2 += 1;
}
//вычислять рекурсию только если предыдущая апертура на той же линии
if (apertures[x].y == apertures[x - 1].y)
{
double rSumReal = rSumsArray[x - 1] - rSum1 + rSum2;
double gSumReal = gSumsArray[x - 1] - rSum1 + rSum2;
double bSumReal = gSumsArray[x - 1] - rSum1 + rSum2;
rSumsArray[x] = rSumReal;
gSumsArray[x] = gSumReal;
bSumsArray[x] = bSumReal;
}
else
{
for (int i = 0; i < redList.Count; i++)
{
rSum += redList[i];
gSum += greenList[i];
bSum += blueList[i];
}
rSumsArray[x] = rSum;
gSumsArray[x] = gSum;
bSumsArray[x] = bSum;
}
}
// int pixelCount = filterSize.X * filterSize.Y;
rSum = (int)rSumsArray[x] / kSum;
if (rSum < 0)
{
rSum = 0;
}
else if (rSum > 255)
{
rSum = 255;
}
gSum = (int)gSumsArray[x] / kSum;
if (gSum < 0)
{
gSum = 0;
}
else if (gSum > 255)
{
gSum = 255;
}
bSum = (int)bSumsArray[x] / kSum;
if (bSum < 0)
{
bSum = 0;
}
else if (bSum > 255)
{
bSum = 255;
}
int aperturePosX = matrix.Count / 2;
if (matrix.Count != 0 && matrix[aperturePosX].Count / 2 != 0)
{
int aperturePosY = matrix[aperturePosX].Count / 2;
Color oldColor = image.GetPixel(matrix[aperturePosX][aperturePosY].X,
matrix[aperturePosX][aperturePosY].Y);
if (colorChannelIndex == 0)
{
rezult.SetPixel(matrix[aperturePosX][aperturePosY].X, matrix[aperturePosX][aperturePosY].Y,
Color.FromArgb((int)rSum, (int)gSum, (int)bSum));
}
else if (colorChannelIndex == 1)
{
rezult.SetPixel(matrix[aperturePosX][aperturePosY].X, matrix[aperturePosX][aperturePosY].Y,
Color.FromArgb((int)rSum, oldColor.G, oldColor.B));
}
else if (colorChannelIndex == 2)
{
rezult.SetPixel(matrix[aperturePosX][aperturePosY].X, matrix[aperturePosX][aperturePosY].Y,
Color.FromArgb(oldColor.R, (int)gSum, oldColor.B));
}
else if (colorChannelIndex == 3)
{
rezult.SetPixel(matrix[aperturePosX][aperturePosY].X, matrix[aperturePosX][aperturePosY].Y,
Color.FromArgb(oldColor.R, oldColor.G, (int)bSum));
}
}
}
service = null;
for (int i = 0; i < apertures.Count; i++)
{
apertures[i].Dispose();
}
apertures.Clear();
return(rezult);
}
