private void showBand_res(Bitmap img)
{
// show RGB bands
Tuple <int[, , ], int[, , ], int[, , ]> bands = ImageRW.getBand(img);
pictureBox_resultRB.Image = ImageRW.SetRGB(bands.Item1);
pictureBox_resultGB.Image = ImageRW.SetRGB(bands.Item2);
pictureBox_resultBB.Image = ImageRW.SetRGB(bands.Item3);
// show histogram of RGB bands
Tuple <Bitmap, Bitmap, Bitmap> histograms = ImageRW.getHistogram(img);
pictureBox_resultRH.Image = histograms.Item1;
pictureBox_resultGH.Image = histograms.Item2;
pictureBox_resultBH.Image = histograms.Item3;
}
public static Bitmap Transform(Bitmap img, string str1)
{
int[,,] rgb = ImageRW.GetRGB(img);
int height = rgb.GetLength(0);
int width = rgb.GetLength(1);
switch (str1)
{
case "Negative":
for (int j = 0; j < height; j++)
{
for (int i = 0; i < width; i++)
{
rgb[j, i, 0] = 255 - rgb[j, i, 0];
rgb[j, i, 1] = 255 - rgb[j, i, 1];
rgb[j, i, 2] = 255 - rgb[j, i, 2];
}
}
break;
case "Log-Transform":
for (int j = 0; j < height; j++)
{
for (int i = 0; i < width; i++)
{
double c = 100;
rgb[j, i, 0] = (int)(c * Math.Log(1 + rgb[j, i, 0], 10));
rgb[j, i, 1] = (int)(c * Math.Log(1 + rgb[j, i, 1], 10));
rgb[j, i, 2] = (int)(c * Math.Log(1 + rgb[j, i, 2], 10));
}
}
break;
}
img = ImageRW.SetRGB(rgb);
return(img);
}
public static Bitmap Transform(Bitmap img, string str1)
{
int[,,] rgb = ImageRW.GetRGB(img);
int height = rgb.GetLength(0);
int width = rgb.GetLength(1);
int[,,] rgb_big = new int[height + 2, width + 2, 3];
int[] values = new int[9];
for (int j = 0; j < height + 2; j++)
{
for (int i = 0; i < width + 2; i++)
{
if (j == 0 || i == 0 || j == height + 1 || i == width + 1)
{
rgb_big[j, i, 0] = 0;
rgb_big[j, i, 1] = 0;
rgb_big[j, i, 2] = 0;
}
else
{
rgb_big[j, i, 0] = rgb[j - 1, i - 1, 0];
rgb_big[j, i, 1] = rgb[j - 1, i - 1, 1];
rgb_big[j, i, 2] = rgb[j - 1, i - 1, 2];
}
}
}
switch (str1)
{
case "Laplacian(4)":
for (int j = 0; j < height; j++)
{
for (int i = 0; i < width; i++)
{
for (int k = 0; k < 3; k++)
{
values[0] = rgb_big[j, i, k];
values[1] = rgb_big[j, i + 1, k];
values[2] = rgb_big[j, i + 2, k];
values[3] = rgb_big[j + 1, i, k];
values[4] = rgb_big[j + 1, i + 1, k];
values[5] = rgb_big[j + 1, i + 2, k];
values[6] = rgb_big[j + 2, i, k];
values[7] = rgb_big[j + 2, i + 1, k];
values[8] = rgb_big[j + 2, i + 2, k];
Array.Sort(values);
rgb[j, i, k] = values[4];
}
}
}
break;
case "Mean":
for (int j = 0; j < height; j++)
{
for (int i = 0; i < width; i++)
{
for (int k = 0; k < 3; k++)
{
values[0] = rgb_big[j, i, k];
values[1] = rgb_big[j, i + 1, k];
values[2] = rgb_big[j, i + 2, k];
values[3] = rgb_big[j + 1, i, k];
values[4] = rgb_big[j + 1, i + 1, k];
values[5] = rgb_big[j + 1, i + 2, k];
values[6] = rgb_big[j + 2, i, k];
values[7] = rgb_big[j + 2, i + 1, k];
values[8] = rgb_big[j + 2, i + 2, k];
rgb[j, i, k] = values.Sum() / 9;
}
}
}
break;
case "Min":
for (int j = 0; j < height; j++)
{
for (int i = 0; i < width; i++)
{
for (int k = 0; k < 3; k++)
{
values[0] = rgb_big[j, i, k];
values[1] = rgb_big[j, i + 1, k];
values[2] = rgb_big[j, i + 2, k];
values[3] = rgb_big[j + 1, i, k];
values[4] = rgb_big[j + 1, i + 1, k];
values[5] = rgb_big[j + 1, i + 2, k];
values[6] = rgb_big[j + 2, i, k];
values[7] = rgb_big[j + 2, i + 1, k];
values[8] = rgb_big[j + 2, i + 2, k];
rgb[j, i, k] = values.Min();
}
}
}
break;
case "Max":
for (int j = 0; j < height; j++)
{
for (int i = 0; i < width; i++)
{
for (int k = 0; k < 3; k++)
{
values[0] = rgb_big[j, i, k];
values[1] = rgb_big[j, i + 1, k];
values[2] = rgb_big[j, i + 2, k];
values[3] = rgb_big[j + 1, i, k];
values[4] = rgb_big[j + 1, i + 1, k];
values[5] = rgb_big[j + 1, i + 2, k];
values[6] = rgb_big[j + 2, i, k];
values[7] = rgb_big[j + 2, i + 1, k];
values[8] = rgb_big[j + 2, i + 2, k];
rgb[j, i, k] = values.Max();
}
}
}
break;
}
img = ImageRW.SetRGB(rgb);
return(img);
}
public static Bitmap Transform(Bitmap img, string str1)
{
int[,,] rgb = ImageRW.GetRGB(img);
int height = rgb.GetLength(0);
int width = rgb.GetLength(1);
int[,,] rgb_big = new int[height + 2, width + 2, 3];
for (int j = 0; j < height + 2; j++)
{
for (int i = 0; i < width + 2; i++)
{
if (j == 0 || i == 0 || j == height + 1 || i == width + 1)
{
rgb_big[j, i, 0] = 0;
rgb_big[j, i, 1] = 0;
rgb_big[j, i, 2] = 0;
}
else
{
rgb_big[j, i, 0] = rgb[j - 1, i - 1, 0];
rgb_big[j, i, 1] = rgb[j - 1, i - 1, 1];
rgb_big[j, i, 2] = rgb[j - 1, i - 1, 2];
}
}
}
switch (str1)
{
case "Laplacian(4)":
int[,] mask = new int[3, 3]
{
{ 0, -1, 0 },
{ -1, 4, -1 },
{ 0, -1, 0 }
};
for (int j = 0; j < height; j++)
{
for (int i = 0; i < width; i++)
{
for (int k = 0; k < 3; k++)
{
rgb[j, i, k] = rgb_big[j, i, k] * mask[0, 0] +
rgb_big[j, i + 1, k] * mask[0, 1] +
rgb_big[j, i + 2, k] * mask[0, 2] +
rgb_big[j + 1, i, k] * mask[1, 0] +
rgb_big[j + 1, i + 1, k] * mask[1, 1] +
rgb_big[j + 1, i + 2, k] * mask[1, 2] +
rgb_big[j + 2, i, k] * mask[2, 0] +
rgb_big[j + 2, i + 1, k] * mask[2, 1] +
rgb_big[j + 2, i + 2, k] * mask[2, 2];
if (rgb[j, i, k] > 255)
{
rgb[j, i, k] = 255;
}
if (rgb[j, i, k] < 0)
{
rgb[j, i, k] = 0;
}
}
}
}
break;
case "Laplacian(4) Add":
mask = new int[3, 3]
{
{ 0, -1, 0 },
{ -1, 4, -1 },
{ 0, -1, 0 }
};
for (int j = 0; j < height; j++)
{
for (int i = 0; i < width; i++)
{
for (int k = 0; k < 3; k++)
{
rgb[j, i, k] = rgb[j, i, k] +
(
rgb_big[j, i, k] * mask[0, 0] +
rgb_big[j, i + 1, k] * mask[0, 1] +
rgb_big[j, i + 2, k] * mask[0, 2] +
rgb_big[j + 1, i, k] * mask[1, 0] +
rgb_big[j + 1, i + 1, k] * mask[1, 1] +
rgb_big[j + 1, i + 2, k] * mask[1, 2] +
rgb_big[j + 2, i, k] * mask[2, 0] +
rgb_big[j + 2, i + 1, k] * mask[2, 1] +
rgb_big[j + 2, i + 2, k] * mask[2, 2]
);
if (rgb[j, i, k] > 255)
{
rgb[j, i, k] = 255;
}
if (rgb[j, i, k] < 0)
{
rgb[j, i, k] = 0;
}
}
}
}
break;
case "Laplacian(4) Minus":
mask = new int[3, 3]
{
{ 0, -1, 0 },
{ -1, 4, -1 },
{ 0, -1, 0 }
};
for (int j = 0; j < height; j++)
{
for (int i = 0; i < width; i++)
{
for (int k = 0; k < 3; k++)
{
rgb[j, i, k] = rgb[j, i, k] -
(
rgb_big[j, i, k] * mask[0, 0] +
rgb_big[j, i + 1, k] * mask[0, 1] +
rgb_big[j, i + 2, k] * mask[0, 2] +
rgb_big[j + 1, i, k] * mask[1, 0] +
rgb_big[j + 1, i + 1, k] * mask[1, 1] +
rgb_big[j + 1, i + 2, k] * mask[1, 2] +
rgb_big[j + 2, i, k] * mask[2, 0] +
rgb_big[j + 2, i + 1, k] * mask[2, 1] +
rgb_big[j + 2, i + 2, k] * mask[2, 2]
);
if (rgb[j, i, k] > 255)
{
rgb[j, i, k] = 255;
}
if (rgb[j, i, k] < 0)
{
rgb[j, i, k] = 0;
}
}
}
}
break;
case "Laplacian(9)":
mask = new int[3, 3]
{
{ -1, -1, -1 },
{ -1, 9, -1 },
{ -1, -1, -1 }
};
for (int j = 0; j < height; j++)
{
for (int i = 0; i < width; i++)
{
for (int k = 0; k < 3; k++)
{
rgb[j, i, k] = rgb_big[j, i, k] * mask[0, 0] +
rgb_big[j, i + 1, k] * mask[0, 1] +
rgb_big[j, i + 2, k] * mask[0, 2] +
rgb_big[j + 1, i, k] * mask[1, 0] +
rgb_big[j + 1, i + 1, k] * mask[1, 1] +
rgb_big[j + 1, i + 2, k] * mask[1, 2] +
rgb_big[j + 2, i, k] * mask[2, 0] +
rgb_big[j + 2, i + 1, k] * mask[2, 1] +
rgb_big[j + 2, i + 2, k] * mask[2, 2];
if (rgb[j, i, k] > 255)
{
rgb[j, i, k] = 255;
}
if (rgb[j, i, k] < 0)
{
rgb[j, i, k] = 0;
}
}
}
}
break;
case "Laplacian(9) Add":
mask = new int[3, 3]
{
{ -1, -1, -1 },
{ -1, 9, -1 },
{ -1, -1, -1 }
};
for (int j = 0; j < height; j++)
{
for (int i = 0; i < width; i++)
{
for (int k = 0; k < 3; k++)
{
rgb[j, i, k] = rgb[j, i, k] +
(
rgb_big[j, i, k] * mask[0, 0] +
rgb_big[j, i + 1, k] * mask[0, 1] +
rgb_big[j, i + 2, k] * mask[0, 2] +
rgb_big[j + 1, i, k] * mask[1, 0] +
rgb_big[j + 1, i + 1, k] * mask[1, 1] +
rgb_big[j + 1, i + 2, k] * mask[1, 2] +
rgb_big[j + 2, i, k] * mask[2, 0] +
rgb_big[j + 2, i + 1, k] * mask[2, 1] +
rgb_big[j + 2, i + 2, k] * mask[2, 2]
);
if (rgb[j, i, k] > 255)
{
rgb[j, i, k] = 255;
}
if (rgb[j, i, k] < 0)
{
rgb[j, i, k] = 0;
}
}
}
}
break;
case "Laplacian(9) Minus":
mask = new int[3, 3]
{
{ -1, -1, -1 },
{ -1, 9, -1 },
{ -1, -1, -1 }
};
for (int j = 0; j < height; j++)
{
for (int i = 0; i < width; i++)
{
for (int k = 0; k < 3; k++)
{
rgb[j, i, k] = rgb[j, i, k] -
(
rgb_big[j, i, k] * mask[0, 0] +
rgb_big[j, i + 1, k] * mask[0, 1] +
rgb_big[j, i + 2, k] * mask[0, 2] +
rgb_big[j + 1, i, k] * mask[1, 0] +
rgb_big[j + 1, i + 1, k] * mask[1, 1] +
rgb_big[j + 1, i + 2, k] * mask[1, 2] +
rgb_big[j + 2, i, k] * mask[2, 0] +
rgb_big[j + 2, i + 1, k] * mask[2, 1] +
rgb_big[j + 2, i + 2, k] * mask[2, 2]
);
if (rgb[j, i, k] > 255)
{
rgb[j, i, k] = 255;
}
if (rgb[j, i, k] < 0)
{
rgb[j, i, k] = 0;
}
}
}
}
break;
case "Sobel":
int[,] mask_gx = new int[3, 3]
{
{ -1, 0, 1 },
{ -2, 0, 2 },
{ -1, 0, 1 }
};
int[,] mask_gy = new int[3, 3]
{
{ -1, -2, -1 },
{ 0, 0, 0 },
{ 1, 2, 1 }
};
for (int j = 0; j < height; j++)
{
for (int i = 0; i < width; i++)
{
for (int k = 0; k < 3; k++)
{
int gx = rgb_big[j, i, k] * mask_gx[0, 0] +
rgb_big[j, i + 1, k] * mask_gx[0, 1] +
rgb_big[j, i + 2, k] * mask_gx[0, 2] +
rgb_big[j + 1, i, k] * mask_gx[1, 0] +
rgb_big[j + 1, i + 1, k] * mask_gx[1, 1] +
rgb_big[j + 1, i + 2, k] * mask_gx[1, 2] +
rgb_big[j + 2, i, k] * mask_gx[2, 0] +
rgb_big[j + 2, i + 1, k] * mask_gx[2, 1] +
rgb_big[j + 2, i + 2, k] * mask_gx[2, 2];
int gy = rgb_big[j, i, k] * mask_gy[0, 0] +
rgb_big[j, i + 1, k] * mask_gy[0, 1] +
rgb_big[j, i + 2, k] * mask_gy[0, 2] +
rgb_big[j + 1, i, k] * mask_gy[1, 0] +
rgb_big[j + 1, i + 1, k] * mask_gy[1, 1] +
rgb_big[j + 1, i + 2, k] * mask_gy[1, 2] +
rgb_big[j + 2, i, k] * mask_gy[2, 0] +
rgb_big[j + 2, i + 1, k] * mask_gy[2, 1] +
rgb_big[j + 2, i + 2, k] * mask_gy[2, 2];
rgb[j, i, k] = (int)Math.Sqrt(Math.Pow(gx, 2) + Math.Pow(gy, 2));
if (rgb[j, i, k] > 255)
{
rgb[j, i, k] = 255;
}
}
}
}
break;
}
img = ImageRW.SetRGB(rgb);
return(img);
}
public static Bitmap Transform(Bitmap img, string str1)
{
int[,,] rgb = ImageRW.GetRGB(img);
int height = rgb.GetLength(0);
int width = rgb.GetLength(1);
switch (str1)
{
case "Mean-Value":
for (int j = 0; j < height; j++)
{
for (int i = 0; i < width; i++)
{
int gray = (rgb[j, i, 0] + rgb[j, i, 1] + rgb[j, i, 2]) / 3;
rgb[j, i, 0] = gray;
rgb[j, i, 1] = gray;
rgb[j, i, 2] = gray;
}
}
break;
case "Mean-Weight":
for (int j = 0; j < height; j++)
{
for (int i = 0; i < width; i++)
{
float gray = (float)(0.299 * rgb[j, i, 0] + 0.587 * rgb[j, i, 1] + 0.114 * rgb[j, i, 2]);
rgb[j, i, 0] = (int)gray;
rgb[j, i, 1] = (int)gray;
rgb[j, i, 2] = (int)gray;
}
}
break;
case "Maximum":
for (int j = 0; j < height; j++)
{
for (int i = 0; i < width; i++)
{
int gray = Math.Max(rgb[j, i, 0], rgb[j, i, 1]);
gray = Math.Max(gray, rgb[j, i, 2]);
rgb[j, i, 0] = gray;
rgb[j, i, 1] = gray;
rgb[j, i, 2] = gray;
}
}
break;
case "Negative":
for (int j = 0; j < height; j++)
{
for (int i = 0; i < width; i++)
{
rgb[j, i, 0] = 255 - rgb[j, i, 0];
rgb[j, i, 1] = 255 - rgb[j, i, 1];
rgb[j, i, 2] = 255 - rgb[j, i, 2];
}
}
break;
case "Log-Transform":
for (int j = 0; j < height; j++)
{
for (int i = 0; i < width; i++)
{
double c = 100;
rgb[j, i, 0] = (int)(c * Math.Log(1 + rgb[j, i, 0], 10));
rgb[j, i, 1] = (int)(c * Math.Log(1 + rgb[j, i, 1], 10));
rgb[j, i, 2] = (int)(c * Math.Log(1 + rgb[j, i, 2], 10));
}
}
break;
//case "Power-Law":
// for (int j = 0; j < height; j++)
// {
// for (int i = 0; i < width; i++)
// {
// double c = 255;
// double gamma = 1;
// if (str2 == "gamma=2.5")
// {
// gamma = 2.5;
// }
// else if (str2 == "gamma=0.4")
// {
// gamma = 0.4;
// }
// rgb[j, i, 0] = (int)(c * Math.Pow(((double)rgb[j, i, 0]) / 255, gamma));
// rgb[j, i, 1] = (int)(c * Math.Pow(((double)rgb[j, i, 1]) / 255, gamma));
// rgb[j, i, 2] = (int)(c * Math.Pow(((double)rgb[j, i, 2]) / 255, gamma));
// }
// }
// break;
}
img = ImageRW.SetRGB(rgb);
return(img);
}